WO2024099005A1 - 卷筒、膜层卷绕装置及电池加工系统 - Google Patents

卷筒、膜层卷绕装置及电池加工系统 Download PDF

Info

Publication number
WO2024099005A1
WO2024099005A1 PCT/CN2023/123452 CN2023123452W WO2024099005A1 WO 2024099005 A1 WO2024099005 A1 WO 2024099005A1 CN 2023123452 W CN2023123452 W CN 2023123452W WO 2024099005 A1 WO2024099005 A1 WO 2024099005A1
Authority
WO
WIPO (PCT)
Prior art keywords
connecting rod
cylinder
film layer
pressure bar
reel
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2023/123452
Other languages
English (en)
French (fr)
Inventor
彭卓
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Contemporary Amperex Technology Co Ltd
Original Assignee
Contemporary Amperex Technology Co Ltd
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 Contemporary Amperex Technology Co Ltd filed Critical Contemporary Amperex Technology Co Ltd
Publication of WO2024099005A1 publication Critical patent/WO2024099005A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/18—Constructional details
    • B65H75/28—Arrangements for positively securing ends of material

Definitions

  • the present application relates to a reel, a film winding device and a battery processing system.
  • the film layer is usually directly bonded to the surface of the reel, wasting a lot of bonding materials.
  • the main purpose of the present application is to propose a roll, aiming to solve the problem of waste of adhesive materials in the existing film layer fixing process.
  • the reel proposed in the present application is used to clamp the film layer, and the reel comprises:
  • a cylinder body forming a first clamping surface
  • a clamping assembly is movably arranged on the cylinder between a closed position and an open position; the clamping assembly has a second clamping surface; when the clamping assembly is in the open position, a gap is formed between the first clamping surface and the second clamping surface for allowing the film layer to at least partially enter therebetween; when the clamping assembly is in the closed position, the first clamping surface and the second clamping surface are clamped to each other.
  • the clamping assembly By arranging the clamping assembly on the cylinder, and taking advantage of the fact that when the clamping assembly is in the open position, a gap for placing the film layer is formed between the second clamping surface of the clamping assembly and the first clamping surface of the cylinder. After the film layer is placed in the gap, the clamping assembly is switched to the closed position, so that the film layer is clamped and fixed by the first clamping surface and the second clamping surface, thereby achieving mutual fixation of the film layer and the cylinder. Since there is no need to use a bonding process for connection, the waste caused by the use of bonding materials can be avoided.
  • the clamping assembly includes:
  • a connecting rod is movably arranged on the cylinder and connected to the pressure bar, so that the connecting rod can drive the pressure bar to move between the closed position and the open position.
  • the pressure bar is used to press the film layer onto the cylinder so that the film layer is limited between the first clamping surface and the second clamping surface; the connecting rod is used to drive the pressure bar to move so that the pressure bar can switch between a closed position and an open position, thereby achieving clamping and fixation of the film layer.
  • a guide hole is provided on the cylinder, one end of which passes through the outer wall of the cylinder; the connecting rod passes through the guide hole and can move back and forth along the guide hole, so that the connecting rod can drive the pressure bar to move between the closed position and the open position.
  • the connecting rod is guided by setting a guide hole so that it can move along the track formed by the guide hole, and then the connecting rod drives the pressure bar to move along the preset track, thereby limiting the pressure bar and improving the relative constancy of the matching position of the pressure bar and the cylinder, which helps to improve the stability of the clamping assembly when clamping the film layer.
  • the clamping assembly further comprises:
  • the first elastic member is arranged in the guide hole, and the first elastic member is respectively connected to the cylinder and the connecting rod to generate a force for elastically pulling the connecting rod into the guide hole.
  • the first elastic member is used to pull the connecting rod so that the connecting rod can be acted upon by elastic force, thereby having a tendency to drive the pressure bar to move toward the closed position, so that the film layer can be clamped on the cylinder by the pressure bar to achieve relative fixation of the film layer.
  • the cylinder has a hollow portion
  • the first elastic member is connected to the inner wall surface of the hollow portion.
  • the installation and fixation of the first elastic member can be facilitated, so that a larger installation space is provided.
  • the first elastic member includes:
  • a first spring has one end connected to the connecting member and the other end connected to the connecting rod.
  • the connecting piece is used as a connecting structure to fix the first spring to the cylinder, so as to facilitate the relative fixation of the first spring and the cylinder.
  • the first spring is sleeved on the periphery of the connecting rod and extends along the length direction of the connecting rod.
  • the first spring is a hollow spiral structure, and the connecting rod is located in the hollow part of the first spring, so that the first spring can be arranged along the length direction of the connecting rod, which is convenient for installation and fixation of the first spring and reduces the space occupied by the first spring.
  • the connecting member is sleeved on the periphery of the connecting rod, and the maximum outer diameter of the connecting member is greater than the inner diameter of the guide hole.
  • the connecting piece is used to fix the first spring.
  • the connecting piece cannot move into the guide hole, thereby fixing the end of the first spring so that the end of the first spring close to the connecting piece remains in a preset position.
  • a first limiting groove is recessed on the inner wall surface of the hollow portion, and one end of the guide hole away from the outer peripheral wall of the cylinder penetrates to the bottom of the first limiting groove; the connecting member is disposed in the first limiting groove.
  • the first limiting groove is used to limit the connection piece to prevent the connection piece from moving along the radial direction of the guide hole, thereby preventing unnecessary misalignment of the clamping assembly.
  • a limiting protrusion is provided on the outer peripheral wall of one end of the connecting rod close to the pressure bar, and the maximum outer peripheral diameter of the limiting protrusion is larger than the inner diameter of the guide hole.
  • the limiting protrusion is protrudingly arranged on the outer peripheral wall of the connecting rod, and the maximum outer peripheral diameter of the limiting protrusion is greater than the inner diameter of the guide hole, so that the limiting protrusion can be used to limit the maximum depth of the connecting rod inserted into the guide hole.
  • a second limiting groove is opened on the outer peripheral wall of the cylinder, and the end of the guide hole away from the outer peripheral wall of the cylinder passes through to the bottom of the second limiting groove; when the pressure bar is in the closed position, the limiting protrusion is embedded in the second limiting groove.
  • the limiting protrusion can be limited to a portion recessed on the outer peripheral wall of the cylinder.
  • the second clamping surface and the first clamping surface at least partially fit each other, and the limiting protrusion does not hinder the movement of the pressure bar.
  • one end of the first spring away from the connecting member is connected to the limiting protrusion.
  • the end of the first spring away from the connecting piece can extend along the extension direction of the connecting rod to the limiting protrusion and then be connected to the limiting protrusion, thereby facilitating the mutual fixation of the first spring and the connecting rod, so that the connecting rod can be affected by the elastic force of the first spring.
  • the clamping assembly further includes a first driving member, which is drivingly connected to an end of the connecting rod away from the pressure bar, so as to drive the connecting rod to drive the pressure bar to move between the closed position and the open position.
  • the first driving member is used to drive the connecting rod to move relative to each other, so that during the axial movement of the connecting rod along the guide hole, it can pull the pressure bar so that the pressure bar can switch between the closed position and the open position, thereby realizing automatic switching of the position of the pressure bar.
  • the first driving member is a cylinder or a pneumatic shaft.
  • the cylinder or air shaft is used to push the connecting rod to move along the axial direction, thereby realizing the synchronous movement of the pressure bar, so that the pressure bar can Implement position switching.
  • a positioning groove is recessed on the outer peripheral wall of the cylinder, and the first clamping surface is formed in the positioning groove.
  • the pressure bar when the pressure bar moves to the closed position, the pressure bar can be at least partially located in the positioning groove, thereby preventing the pressure bar from protruding outside the reel and causing damage to the film layer wound on the reel.
  • the guide hole extends through to the positioning slot.
  • the guide hole is used to guide the connecting rod.
  • the end of the connecting rod away from the axis of the reel is also located in the positioning groove, avoiding interference with the film layer wound on the reel when the connecting rod protrudes from the outer peripheral wall of the reel.
  • the connecting rod has a proximal end for connecting to the pressure bar and a distal end away from the pressure bar;
  • the cylinder is provided with a positioning shaft, the connecting rod is rotatably connected to the positioning shaft, and the positioning shaft is located between the proximal end and the distal end of the connecting rod;
  • the reel also includes a second elastic member; the distal end of the connecting rod is connected to the cylinder through the second elastic member, so that the second elastic member generates a force to pull the proximal end of the connecting rod and the pressure bar toward the first clamping surface.
  • the connecting rod is rotatably connected to the positioning shaft so that the connecting rod cooperates with the positioning shaft to form a lever-like mechanism.
  • the second elastic member can exert an elastic force on the connecting rod, thereby causing the distal end of the connecting rod to rotate relative to the positioning shaft and drive the pressure bar to move synchronously, thereby realizing the position switching of the pressure bar.
  • the clamping assembly further includes a second driving member, which is drivingly connected to a distal end of the connecting rod and is used to drive the connecting rod to rotate around the positioning axis.
  • the second driving member is provided to drive the connecting rod to rotate relative to the positioning shaft, thereby realizing the relative movement of the connecting rod, so that the connecting rod can drive the pressure bar to move between the open position and the closed position.
  • the clamping assembly further includes a third driving member disposed on the cylinder;
  • the connecting rod comprises:
  • a rocker drivingly connected to the third driving member
  • a driven rod has one end rotatably connected to the cylinder, and the other end is connected to the pressure bar and an end of the active rod away from the rocker; the third driving member is used to drive the rocker, the active rod and the rocker to move the pressure bar between the open position and the closed position.
  • the rocker, the active rod and the driven rod form a connecting rod mechanism
  • the third driving member is used to drive the connecting rod mechanism to move relative to each other, so that the connecting rod mechanism can drive the pressure bar to move between the open position and the closed position.
  • a third limiting groove is recessed on the cylinder, and an inner wall surface of the third limiting groove forms the first clamping surface; the connecting rod is disposed at both axial ends of the cylinder.
  • the third limiting groove is used to form a concave area for accommodating the pressure bar.
  • the pressure bar is at least partially located in the third limiting groove, thereby preventing the pressure bar from protruding from the outer wall of the cylinder and causing damage to the membrane layer.
  • this example further proposes an example of a film layer winding device for winding a film layer, wherein the film layer winding device comprises:
  • a main winding member used for winding the film layer
  • An auxiliary shaft is movably arranged between the main winding member and the reel; the auxiliary shaft is used to push the film layer output by the main winding member to the cylinder body so that the film layer can be embedded in the gap between the first clamping surface and the second clamping surface.
  • the film layer is wound on the main winding member.
  • the auxiliary shaft pushes the film layer to the cylinder, the film layer can be partially pressed against the cylinder by the clamping assembly, thereby fixing the film layer to the reel.
  • this example also proposes a battery processing system, including the film winding device as described in the above example.
  • FIG1 is a front view of an example of a reel of the present application.
  • FIG2 is a left side view of an example of a reel of the present application.
  • Fig. 3 is a cross-sectional view taken along line 2a-2a in Fig. 2;
  • FIG4 is a partial enlarged view of the portion 3b in FIG3 ;
  • FIG5 is a front view of an example of a cylinder of the present application.
  • FIG6 is a left side view of an example of a cylinder of the present application.
  • FIG7 is a cross-sectional view taken along line 6a-6a in FIG6;
  • FIG8 is a structural schematic diagram of an example of a matching state of a pressure bar and a connecting rod of the present application
  • FIG9 is a schematic structural diagram of an example of a first elastic member of the present application.
  • FIG10 is a schematic structural diagram of another example of the reel of the present application.
  • FIG11 is a front view of FIG10 ;
  • FIG12 is a right side view of FIG10
  • FIG13 is a schematic structural diagram of another example of the cylinder of the present application.
  • FIG14 is a right side view of FIG13;
  • FIG15 is a structural schematic diagram of another example of the matching state of the pressure bar and the connecting rod of the present application.
  • FIG16 is a schematic structural diagram of another example of the roll clamping assembly of the present application when it is in an open position
  • FIG17 is a front view of FIG16
  • FIG18 is a right side view of FIG16
  • FIG19 is a schematic structural diagram of an example of a film winding device of the present application.
  • FIG20 is a schematic structural diagram of another example of the film winding device of the present application.
  • FIG21 is a schematic structural diagram of an example of a film winding device of the present application when the clamping assembly is in an open position;
  • FIG. 22 is a schematic structural diagram of an example of a film winding device of the present application when the clamping assembly is in a closed position.
  • Power batteries can be divided into disposable batteries and rechargeable batteries according to whether they are rechargeable or not.
  • the common types of rechargeable batteries are: lead-acid batteries, nickel-metal hydride batteries and lithium-ion batteries.
  • Lithium-ion batteries are currently widely used in pure electric vehicles and hybrid vehicles. The capacity of lithium-ion batteries used for this purpose is relatively low, but they have larger output, charging current, and longer service life.
  • Lithium-ion battery is a complex system, including a shell and the positive electrode, negative electrode, separator, current collector, binder, conductive agent, etc. arranged in the shell.
  • the battery shell is provided with an injection hole for injecting electrolyte into the battery; the electrolyte is used to conduct ions between the positive and negative electrodes of the lithium battery.
  • the reactions involved include electrochemical reactions of the positive and negative electrodes, lithium ion conduction and electron conduction, as well as heat diffusion.
  • the production process of lithium batteries is relatively long, and there are many steps involved in the production process.
  • Lithium batteries can be divided into cylindrical batteries, square batteries and soft-pack batteries according to their shapes. Their production processes are somewhat different. Overall, the lithium battery manufacturing process can be divided into the front-end process (electrode manufacturing), the middle-end process (battery cell synthesis), and the back-end process (formation packaging).
  • the staff needs to bond and fix the end of the film layer to the reel so that the end of the film layer can be fixed on the reel, and then wind the film layer on the reel.
  • This application proposes a reel to solve the problem that the film layer 100 is fixed by bonding in the existing reel, resulting in waste of adhesive materials and film layer 100.
  • the reel is used to clamp the film layer 100.
  • the reel includes a cylinder 20 and a clamping assembly 30 arranged on the cylinder 20.
  • the cylinder 20 is formed with a first clamping surface 21; the clamping assembly 30 can be moved between a closed position and an open position; the clamping assembly 30 has a second clamping surface 32; when the clamping assembly 30 is in the open position, a gap is formed between the first clamping surface 21 and the second clamping surface 32 for at least part of the film layer 100 to enter therebetween; when the clamping assembly 30 is in the closed position, the first clamping surface 21 and the second clamping surface 32 are clamped to each other.
  • the cylinder 20 is cylindrical and has a circular outer peripheral wall as shown in FIG. 2 .
  • the film layer 100 is wound on the cylinder 20 with the axis of the cylinder 20 as the center.
  • the cylinder 20 is provided with a first clamping surface 21.
  • the end of the film layer 100 is at least partially pressed onto the first clamping surface 21 under the action of the second clamping surface 32.
  • the clamping assembly 30 is connected to the cylinder 20, and the clamping assembly 30 can move between an open position and a closed position, and the clamping assembly 30 has a second clamping surface 32.
  • the film layer 100 has an end for matching with the clamping assembly 30.
  • the open position means that there is a gap between the second clamping surface 32 of the clamping assembly 30 and the first clamping surface 21 of the cylinder 20, and the width of the gap is slightly larger than the thickness of the end of the film layer 100, so that the film layer 100 can enter between the first clamping surface 21 and the second clamping surface 32.
  • the closed position means that the distance between the first clamping surface 21 and the second clamping surface 32 is small, so that the first clamping surface 21 and the second clamping surface 32 are clamped together, or there is a gap between the first clamping surface 21 and the second clamping surface 32, and the thickness of the gap is less than the thickness of the film layer 100.
  • the clamping assembly 30 can move relative to the barrel 20, so that the distance between the second clamping surface 32 of the clamping assembly 30 and the first clamping surface 21 of the barrel 20 can be adjusted.
  • the clamping assembly 30 can be switched between an open position and a closed position, so that the gap between the first clamping surface 21 and the second clamping surface 32 can change with the movement of the clamping assembly 30.
  • the clamping assembly 30 is in the open position, the gap between the first clamping surface 21 and the second clamping surface 32 is sufficient for the film layer 100 to be placed therebetween.
  • the clamping assembly 30 drives the film layer 100 to move synchronously to the closed position, the distance between the second clamping surface 32 and the first clamping surface 21 is reduced until the film layer 100 is clamped between the first clamping surface 21 and the second clamping surface 32.
  • the clamping assembly 30 When the film layer 100 is not wound on the cylinder 20, the clamping assembly 30 is in a closed position, the first clamping surface 21 and the second clamping surface 32 are in close contact with each other, or the width of the gap between the first clamping surface 21 and the second clamping surface 32 is at a minimum.
  • the movable clamping assembly 30 is used to limit the film layer 100, the film layer 100 is clamped on the outer wall of the cylinder 20, and there is no need to use additional adhesive structures such as tape to fix the film layer 100, thereby avoiding the waste of materials such as tape. Since only the local structure of the end of the film layer 100 needs to be clamped between the first clamping surface 21 and the second clamping surface 32, the part of the film layer 100 that is not in contact with the clamping assembly 30 is not affected, thereby avoiding the waste of the film layer 100 caused by the existing long-distance tape bonding process. Since there is no need to use materials containing glue, it can avoid contamination of the roll or the film layer 100.
  • the clamping assembly 30 is used to clamp the local structure of the end of the film layer 100.
  • the clamping assembly 30 clamps and fixes the two ends of the end of the film layer 100 in the width direction between the first clamping surface 21 and the second clamping surface 32, or the clamping assembly 30 clamps the middle position of the end of the film layer 100 in the width direction between the first clamping surface 21 and the second clamping surface 32.
  • the clamping assembly 30 clamps the end of the film layer 100 as a whole between the first clamping surface 21 and the second clamping surface 32.
  • the first clamping surface 21 and the second clamping surface 32 are extended along the width direction of the film layer 100 so that the end of the film layer 100 is located between the first clamping surface 21 and the second clamping surface 32 as a whole.
  • the first clamping surface 21 is a local position on the circular outer peripheral wall of the cylinder 20.
  • a groove is concavely provided on the outer peripheral wall of the cylinder 20, and the first clamping surface 21 is formed in the groove.
  • a protruding structure is convexly provided on the outer peripheral wall of the cylinder 20, and the first clamping surface 21 is a partial surface on the protruding structure.
  • a groove is concavely provided on the outer peripheral wall of the cylinder 20, and the first clamping surface 21 is formed in the groove.
  • the second clamping surface 32 of the clamping assembly 30 is located in the groove.
  • the clamping assembly 30 can be located on the inner side of the outer peripheral edge of the cylinder 20 so that the clamping assembly 30 does not protrude outside the outer peripheral wall of the cylinder 20.
  • the cylinder 20 is a hollow structure to reduce the weight of the cylinder 20 and reduce the material required for the cylinder 20.
  • the hollow portion of the cylinder 20 can be located in the middle of the cylinder 20, that is, as shown in FIG. 2 , the cylinder 20 is provided with a hollow portion 23.
  • the length direction of the hollow portion 23 extends along the axial direction of the cylinder 20, and the hollow portion 23 coincides with the axis of the cylinder 20.
  • the clamping assembly 30 includes a pressure bar 31 and a connecting rod 33.
  • the pressure bar 31 is formed with a second clamping surface 32; the connecting rod 33 is movably disposed on the cylinder 20 and connected to the pressure bar 31 so that the connecting rod 33 can drive the pressure bar 31 to move between a closed position and an open position.
  • the pressure bar 31 is used to cooperate with the cylinder 20 to clamp the film layer 100; the connecting rod 33 is used to drive the pressure bar 31 to move relative to the cylinder 20, so that the pressure bar 31 can move between the closed position and the open position, thereby enabling the pressure bar 31 to be used for clamping
  • the film layer 100 is fixed on the roll.
  • the connecting rod 33 is movably connected to the cylinder 20 so that the connecting rod 33 can move along a preset trajectory.
  • the connecting rod 33 drives the pressure bar 31 to move synchronously so that the pressure bar 31 can switch between the open position and the closed position along the preset trajectory.
  • the preset track can be the radial direction of the cylinder 20, that is, the preset track is a straight line; as shown in FIG. 2, for example, the pressure bar 31 moves from the outer peripheral wall of the reel along the radial direction of the cylinder 20, away from the outer peripheral wall of the cylinder 20 to switch to the open position, and the pressure bar 31 moves along the radial direction of the cylinder 20, close to the outer peripheral wall of the cylinder 20 to switch to the closed position.
  • the preset track can also be a curve or a broken line, so that the pressure bar 31 can move relatively close to or away from the outer peripheral wall of the cylinder 20.
  • a driving device for driving the connecting rod 33 to move along a preset track is provided on the cylinder 20.
  • a driving device for driving the connecting rod 33 to move along a preset track is provided on the cylinder 20.
  • a driving device for driving the connecting rod 33 to move along a preset track.
  • a guide hole 22 is provided on the cylinder 20, and one end of the guide hole 22 passes through the outer wall of the cylinder 20; the connecting rod 33 passes through the guide hole 22 and can move back and forth along the guide hole 22, so that the connecting rod 33 can drive the pressure bar 31 to move between the closed position and the open position.
  • the guide hole 22 has a first end that passes through the outer wall of the cylinder 20.
  • the connecting rod 33 is inserted into the guide hole 22 from the first end of the guide hole 22 and can reciprocate along the axial direction of the guide hole 22 so as to drive the pressure bar 31 to switch between the open position and the closed position.
  • the guide hole 22 may be a blind hole or a through hole provided on the cylinder 20.
  • the guide hole 22 may be connected to the hollow portion 23.
  • the connecting rod 33 can be limited so that the connecting rod 33 can move along the trajectory formed by the guide hole 22, thereby limiting the trajectory of the pressure bar 31, so that the pressure bar 31 can better cooperate with the cylinder 20, avoiding misalignment between the first clamping surface 21 and the second clamping surface 32, thereby helping to improve the docking accuracy between the first clamping surface 21 and the second clamping surface 32.
  • the clamping assembly 30 also includes a first elastic member 35 disposed in the guide hole 22.
  • the first elastic member 35 is respectively connected to the cylinder 20 and the connecting rod 33 to generate a force to elastically pull the connecting rod 33 into the guide hole 22.
  • One end of the first elastic member 35 is limited on the cylinder 20, and the other end of the first elastic member 35 is connected to the connecting rod 33, so that when the connecting rod 33 moves along the guide hole 22, the first elastic member 35 can generate an elastic traction force on the connecting rod 33.
  • the connecting rod 33 has a tendency to move along the guide hole 22 toward the inside of the cylinder 20.
  • the pressure bar 31 has a tendency to move toward the closed position, so that the second clamping surface 32 has a tendency to clamp toward the first clamping surface 21, and then the pressure bar 31 can press the film layer 100 onto the cylinder 20.
  • the cylinder 20 has a hollow portion 23 .
  • One end of the guide hole 22 away from the outer peripheral wall of the cylinder 20 passes through the hollow portion 23 .
  • the first elastic member 35 is connected to the inner wall surface of the hollow portion 23 .
  • the guide hole 22 is a through hole provided on the cylinder 20 so that the end of the connecting rod 33 away from the pressure bar 31 can extend to the position of the hollow part 23.
  • the first elastic member 35 is connected to the inner wall surface of the hollow part 23 to facilitate the fixing of the first elastic member 35.
  • the inner diameter of the guide hole 22 provided on the cylinder 20 should not be too large.
  • the first elastic member 35 partially extends into the guide hole 22 and is connected to the connecting rod 33.
  • the fixing of the first elastic member 35 can be achieved, and the first elastic member 35 is partially extended along the guide hole 22 and connected to the connecting rod 33, so that the internal space of the guide hole 22 can be fully utilized.
  • the first elastic member 35 is connected to the end of the connecting rod 33 away from the pressure bar 31 to play an elastic traction role on the connecting rod 33, and the first elastic member 35 does not occupy the internal space of the guide hole 22.
  • the first elastic member 35 includes a connecting member 352 and a first spring 351 connected to the connecting member 352.
  • the connecting member 352 is connected to the inner wall surface of the hollow portion 23.
  • One end of the first spring 351 is connected to the connecting member 352.
  • the first end is connected to the connecting piece 352, and the other end is connected to the connecting rod 33.
  • the connecting piece 352 is used to connect with the cylinder 20, and the first spring 351 is used to connect with the connecting rod 33 to facilitate the fixation of the first spring 351. Since the first spring 351 is retractable and has a certain flexibility, the connecting piece 352 is provided on the inner wall surface of the hollow part 23 of the cylinder 20 to facilitate the fixation of the first spring 351 with variable performance.
  • the first spring 351 When installing the first spring 351 , the first spring 351 may be arranged axially along the guide hole 22 to fully utilize the internal space of the guide hole 22 ; the first spring 351 may also be arranged on the inner wall surface of the hollow portion 23 to facilitate installation.
  • the first spring 351 is sleeved on the periphery of the connecting rod 33 and extends along the length direction of the connecting rod 33 .
  • the first spring 351 is sleeved on the outside of the connecting rod 33, so that the first spring 351 occupies the gap between the outer peripheral wall of the connecting rod 33 and the inner wall surface of the guide hole 22, so as to fully utilize the internal space of the guide hole 22.
  • the first spring 351 can be extended along the axial direction of the connecting rod 33, thereby limiting the first spring 351 and preventing the first spring 351 from being misplaced.
  • the connecting member 352 is sleeved on the periphery of the connecting rod 33 , and the maximum outer diameter of the connecting member 352 is greater than the inner diameter of the guide hole 22 .
  • the connecting member 352 is provided with a through hole, and the connecting rod 33 is provided with the through hole, and the inner diameter of the through hole on the connecting member 352 is larger than the outer diameter of the connecting rod 33, so that the connecting rod 33 can move axially relative to the connecting member 352.
  • the connecting member 352 and the first spring 351 can be conveniently fixed. Since the maximum outer diameter of the connecting member 352 is larger than the inner diameter of the guide hole 22, the connecting member 352 cannot move into the guide hole 22, thereby achieving the limit of the connecting member 352.
  • a first limiting groove 24 is recessed on the inner wall surface of the hollow portion 23 , and one end of the guide hole 22 away from the outer peripheral wall of the cylinder body 20 passes through to the bottom of the first limiting groove 24 ; the connecting member 352 is disposed in the first limiting groove 24 .
  • the first limiting groove 24 is a groove concavely arranged on the inner wall surface of the hollow portion 23. After the connecting member 352 is arranged in the first limiting groove 24, the connecting member 352 is blocked by the first limiting groove 24, so that the connecting member 352 cannot move along the radial direction of the guide hole 22, thereby preventing the connecting member 352 from being misplaced.
  • the connecting member 352 is fixed in the first limiting groove 24, so that the connecting member 352 is prevented from moving unnecessarily under the action of the first spring 351, thereby preventing the first elastic member 35 from falling off.
  • a limiting protrusion 334 is convexly formed on the outer peripheral wall of one end of the connecting rod 33 close to the pressure bar 31 .
  • the maximum outer peripheral diameter of the limiting protrusion 334 is larger than the inner diameter of the guide hole 22 .
  • the limiting protrusion 334 is protrudingly arranged on the outer peripheral wall of the connecting rod 33, so that when the connecting rod 33 is inserted into the guide hole 22, the limiting protrusion 334 cannot enter the guide hole 22.
  • the limiting protrusion 334 limits the maximum depth of the connecting rod 33 inserted into the guide hole 22, so that when the second clamping surface 32 of the pressure bar 31 and the first clamping surface 21 of the cylinder 20 are clamped with each other, the connecting rod 33 cannot continue to move into the guide hole 22, so as to limit the connecting rod 33 and the pressure bar 31.
  • the limiting protrusion 334 can be a protrusion provided on the outer peripheral wall of the connecting rod 33 , or can be a protrusion ring provided on the outer wall of the connecting rod 33 .
  • a second limiting groove 25 is opened on the outer peripheral wall of the cylinder 20, and the end of the guide hole 22 away from the outer peripheral wall of the cylinder 20 passes through to the bottom of the second limiting groove 25; when the pressure bar 31 is in the closed position, the limiting protrusion 334 is embedded in the second limiting groove 25.
  • the second limiting groove 25 is recessed in the outer peripheral wall of the cylinder 20. Since the limiting protrusion 334 is arranged at one end of the connecting rod 33 close to the pressure bar 31, the second limiting groove 25 is used to accommodate the limiting protrusion 334. When the second clamping surface 32 of the pressure bar 31 and the first clamping surface 21 of the cylinder 20 are clamped with each other, the limiting protrusion 334 is located in the second limiting groove 25, so that the limiting protrusion 334 will not affect the pressure bar 31.
  • one end of the first spring 351 away from the connecting member 352 is connected to the limiting protrusion 334 .
  • the first spring 351 can be fixed at one end away from the connecting member 352 by the limiting protrusion 334, which can facilitate the mutual fixation between the first spring 351 and the connecting rod 33, and facilitate the first spring 351 to be fixed to the connecting member 352.
  • An elastic member 35 is installed.
  • the clamping assembly 30 also includes a first driving member (not shown in the figure), which is drivingly connected to an end of the connecting rod 33 away from the pressure bar 31 to drive the connecting rod 33 to drive the pressure bar 31 to move between the closed position and the open position.
  • a first driving member (not shown in the figure), which is drivingly connected to an end of the connecting rod 33 away from the pressure bar 31 to drive the connecting rod 33 to drive the pressure bar 31 to move between the closed position and the open position.
  • the first driving member is a cylinder or a pneumatic shaft, and the first driving member drives the connecting rod 33 to move axially along the guide hole 22, thereby realizing the movement of the pressure bar 31 between the closed position and the open position.
  • the first driving member can be arranged in the hollow part 23 of the cylinder 20, or can be arranged at any position on the cylinder 20 that can be driven and connected to the connecting rod 33.
  • the connecting rod 33 When the connecting rod 33 is driven to move by the first driving member, the connecting rod 33 stretches the first elastic member 35, so that the connecting rod 33 is subjected to the elastic traction force of the first elastic member 35, thereby causing the connecting rod 33 and the pressure bar 31 to have a tendency to move toward the closed position.
  • the connecting rod 33 drives the pressure bar 31 to move toward the closed position, thereby elastically clamping the film layer 100 between the first clamping surface 21 and the second clamping surface 32, so as to achieve the fixation of the film layer 100.
  • the connecting rod 33 has the limiting protrusion 334 as described in the above example, the force acting on the connecting rod 33 by the first driving member disappears, and the connecting rod 33 moves toward the inside of the guide hole 22 under the elastic force of the first elastic member 35.
  • the limiting protrusion 334 abuts against the bottom of the second limiting groove 25, the pressure bar 31 reaches the closed position, and the first clamping surface 21 and the second clamping surface 32 clamp the membrane layer 100.
  • a positioning groove 27 is recessed on the outer peripheral wall of the cylinder 20 , and a first clamping surface 21 is formed in the positioning groove 27 .
  • the positioning groove 27 is a groove recessed on the outer peripheral wall of the cylinder 20.
  • the pressure bar 31 protrudes less from the outer peripheral wall of the cylinder 20, thereby avoiding ejection of the film layer 100 wound on the cylinder 20 and avoiding damage to the film layer 100 wound on the cylinder 20.
  • the guide hole 22 is connected to the positioning groove 27.
  • the connecting rod 33 is inserted into the cylinder 20 through the positioning groove 27 and the guide hole 22 in turn, so that the connecting rod 33 can drive the pressure bar 31 to switch between the closed position and the open position.
  • the guide hole 22 penetrates the positioning groove 27, the pressure bar 31 is in the closed position, and the connecting rod 33 is completely hidden in the positioning groove 27, thereby avoiding the connecting rod 33 from affecting the film layer 100 wound on the cylinder 20, preventing the connecting rod 33 and the film layer 100 from interfering with each other, and thereby avoiding damage to the film layer 100.
  • the driving end of the first driving member can be extended into the guide hole 22 and then connected to the connecting rod 33; or, the end of the connecting rod 33 away from the pressure bar 31 protrudes to the outside of the end of the guide hole 22 away from the positioning groove 27, and is connected to the first driving member; when a structure such as an air shaft is adopted, the driving of the connecting rod 33 can be easily realized.
  • the connecting rod 33 has a proximal end for connecting to the pressure bar 31 and a distal end away from the pressure bar 31; a positioning shaft (not shown in the figure) is provided on the cylinder 20, and the connecting rod 33 is rotatably connected to the positioning shaft, and the positioning shaft is located between the proximal end and the distal end of the connecting rod 33; the reel also includes a second elastic member 36; the distal end of the connecting rod 33 is connected to the cylinder 20 through the second elastic member 36, so that the second elastic member 36 generates a force to pull the proximal end of the connecting rod 33 and the pressure bar 31 toward the first clamping surface 21.
  • the positioning shaft is connected to the cylinder 20, and the connecting rod 33 is rotatably connected to the positioning shaft so that the connecting rod 33 can rotate around the positioning shaft.
  • the “near” and “far” refer to the distance between any part on the connecting rod and the pressing bar 31.
  • the proximal end of the connecting rod 33 is used to connect with the pressing bar 31, and the distal end of the connecting rod 33 is used to connect with the second elastic member 36.
  • the connecting rod 33 forms a similar lever structure with the positioning shaft as the rotation center.
  • the connecting rod 33 When the connecting rod 33 performs an extrusion or stretching operation on the second elastic member 36, under the elastic action of the second elastic member 36, the connecting rod 33 rotates around the positioning shaft, so that the pressing bar 31 installed at the distal end of the connecting rod 33 moves synchronously, thereby realizing the movement and switching of the pressing bar 31 between the closed position and the open position.
  • the second elastic member 36 may be a compression spring, which realizes the relative rotation of the connecting rod 33 through elastic deformation.
  • a driving mechanism may be provided on the cylinder 20 to drive the connecting rod 33 to rotate around the positioning axis.
  • the connecting rod 33 can drive the pressure bar 31 to move relatively, the pressure bar 31 can have a tendency to move toward the closed position under the action of the second elastic member 36 , thereby clamping the film layer 100 between the second clamping surface 32 and the first clamping surface 21 .
  • the clamping assembly 30 also includes a second driving member (not shown in the figure), which is connected to the distal end of the connecting rod 33 and is used to drive the connecting rod 33 to rotate around the positioning axis.
  • the second driving member can be a motor, a cylinder, an electric cylinder or other device that can drive the connecting rod 33 to rotate around the positioning axis.
  • the positioning shaft and the connecting rod 33 are disposed at both ends of the cylinder 20 in the axial direction so that the connecting rod 33 does not interfere with the film layer 100 , thereby preventing the connecting rod 33 from lifting the film layer 100 and causing damage to the film layer 100 .
  • a third limiting groove 26 is concavely provided on the outer peripheral wall of the cylinder 20.
  • the third limiting groove 26 can be a through groove on the outer peripheral wall of the cylinder 20 that passes through the cylinder 20 in the radial direction, or it can be an inner groove concavely provided on the surface of the cylinder 20.
  • the clamping assembly 30 also includes a third driving member (not shown in the figures) provided on the cylinder 20;
  • the connecting rod 33 includes a rocking arm 331, an active rod 332 and a driven rod 333, the rocking arm 331 is drivingly connected to the third driving member;
  • the active rod 332 is rotationally connected to an end of the rocking arm 331 away from the third driving member;
  • one end of the driven rod 333 is rotationally connected to the cylinder 20, and the other end is connected to the pressure bar 31 and an end of the active rod 332 away from the rocking arm 331;
  • the third driving member is used to drive the rocking arm 331, the active rod 332 and the rocking arm 331 to move the pressure bar 31 between the open position and the closed position.
  • the rocker 331, the active rod 332 and the driven rod 333 are combined to form a multi-link mechanism.
  • the rocker 331 is driven to rotate by the third driving member, the multi-link mechanism moves synchronously, so that the multi-link mechanism can drive the pressure bar 31 to move and switch between the open position and the closed position.
  • the third driving member can be a motor, a cylinder or other device capable of driving the rocker 331 to rotate relative to each other.
  • the third driving member can be a motor, a cylinder or other device capable of driving the rocker 331 to rotate relative to each other.
  • a third limiting groove 26 is recessed on the cylinder 20 , and an inner wall surface of the third limiting groove 26 forms a first clamping surface 21 ; and the connecting rod 33 is disposed at both ends of the cylinder 20 in the axial direction.
  • the third limiting groove 26 forms a space for accommodating the pressure bar 31, so that when the pressure bar 31 is in the closed position, the pressure bar 31 is at least partially located in the third limiting groove 26, so as to reduce the height of the pressure bar 31 protruding from the outer peripheral wall of the cylinder 20, thereby preventing the pressure bar 31 from lifting the film layer 100 and causing damage to the film layer 100 when the pressure bar 31 protrudes from the outer peripheral wall of the cylinder 20. Since the connecting rod 33 is located at both ends of the axial direction of the cylinder 20, the stability of the pressure bar 31 can be improved, and at the same time, the connecting rod 33 is prevented from interfering with the film layer 100, thereby preventing the connecting rod 33 from damaging the film layer 100.
  • the film layer winding device is used to wind the film layer 100, and the film layer winding device includes a main winding member 10, an auxiliary shaft 11, and a reel as described in any of the above examples.
  • the main winding member 10 is used to wind the film layer 100; the reel as described in any of the above examples is arranged adjacent to the main winding member 10; the auxiliary shaft 11 is movably arranged between the main winding member 10 and the reel; the auxiliary shaft 11 is used to push the film layer 100 output by the main winding member 10 to the cylinder 20, so that the film layer 100 can be embedded in the gap between the first clamping surface 21 and the second clamping surface 32.
  • the film layer 100 to be processed is wound on the main winding member 10, and the conveying direction of the film layer 100 is controlled by the auxiliary shaft 11.
  • the number of the auxiliary shafts 11 can be multiple to adjust the conveying direction of the film layer 100.
  • the auxiliary shaft 11 drives the film 100 to move synchronously to the cylinder 20, so as to push the film 100 to the cylinder 20.
  • the clamping assembly 30 moves to the open position, the film 100 is cut along the cutting position shown in FIG. 21.
  • the end of the film 100 extends into the first clamping surface 21 and the second clamping surface 21.
  • the gap between the clamping surfaces 32 is closed, and the clamping assembly 30 is switched to a closed position, so that the film layer 100 is clamped between the first clamping surface 21 and the second clamping surface 32, so that the end of the film layer 100 is fixed on the cylinder 20.
  • the cylinder 20 can be driven to rotate by other equipment, and then the film layer 100 is wound on the cylinder 20.
  • the example of the film layer winding device of the present application is based on the example of the above-mentioned roll, the example of the film layer winding device of the present application includes all the technical solutions of all the above-mentioned roll examples, and the technical effects achieved are exactly the same, which will not be repeated here.
  • this example also proposes an example of a battery processing system, and the battery processing system includes the film layer winding device as described in the above-mentioned example.
  • the reel has a barrel 20 and a clamping assembly 30.
  • the clamping assembly 30 includes a connecting rod 33 and a driving device for driving the connecting rod 33 to move along a preset track.
  • the clamping assembly 30 can move between an open position and a closed position, so that when the clamping assembly 30 is in the open position, the end of the film layer 100 can extend between the first clamping surface 21 and the second clamping surface 32; when the clamping assembly 30 is switched to the closed position, the first clamping surface 21 and the second clamping surface 32 are clamped to each other, so that the film layer 100 is clamped and fixed in the gap between the first clamping surface 21 and the second clamping surface 32, and then the end of the film layer 100 is fixed on the barrel 20.
  • the film layer 100 is fixed by the clamping assembly 30, there is no need to use existing devices such as tape for fixing, thereby reducing the utilization of resources such as tape; since there is glue on the tape, the glue adheres to the outer wall of the cylinder 20, which is easy to affect the surface of the cylinder 20 and affect the secondary use of the cylinder 20.
  • the film layer 100 is clamped and fixed by the clamping assembly 30, which can reduce the impact on the cylinder 20 and prevent the cylinder 20 from being contaminated by impurities such as glue.

Landscapes

  • Winding Of Webs (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)

Abstract

一种卷筒、膜层卷绕装置及电池加工系统，其中，卷筒包括筒体(20)以及夹持组件(30)，筒体(20)形成有第一夹持面(21)；夹持组件(30)在闭合位置和打开位置之间可移动地设于筒体(20)；夹持组件(30)具有第二夹持面(32)；夹持组件(30)处于打开位置时，第一夹持面(21)与第二夹持面(32)之间形成有用于供膜层(100)至少部分进入两者之间的间隙；夹持组件(30)处于闭合位置时，第一夹持面(21)与第二夹持面(32)之间相互夹紧。通过将膜层(100)夹持固定在第一夹持面(21)与第二夹持面(32)之间，进而实现对膜层(100)与筒体(20)的相互固定；由于无需采用粘接工艺进行连接，能够避免使用粘接材料而带来的浪费。

Description

卷筒、膜层卷绕装置及电池加工系统
相关申请的交叉引用
本申请要求于2022年11月8日提交的名称为“卷筒、膜层卷绕装置及电池加工系统”的中国专利申请202211403145.7的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及一种卷筒、膜层卷绕装置及电池加工系统。
背景技术
动力电池加工过程中，需要大量的覆膜或膜层卷绕工艺。以覆膜工艺为例，在进行覆膜工艺时，为了对膜层进行固定，通常直接将膜层粘接在卷轴表面，浪费了大量的粘接材料。
发明内容
本申请的主要目的是提出一种卷筒，旨在解决现有的膜层固定过程中的粘接材料浪费的问题。
为实现上述目的，本申请提出的卷筒用于夹持膜层，所述卷筒包括：
筒体，所述筒体形成有第一夹持面；以及
夹持组件，在闭合位置和打开位置之间可移动地设于所述筒体；所述夹持组件具有第二夹持面；所述夹持组件处于所述打开位置时，所述第一夹持面与所述第二夹持面之间形成有用于供所述膜层至少部分进入两者之间的间隙；所述夹持组件处于所述闭合位置时，所述第一夹持面与所述第二夹持面之间相互夹紧。
通过将夹持组件设置在筒体上，并利用夹持组件位于打开位置时，夹持组件的第二夹持面与筒体的第一夹持面之间形成用来放入膜层的间隙，将膜层放入该间隙之后，将夹持组件切换至闭合位置，使得膜层被第一夹持面和第二夹持面夹持固定，进而实现对膜层与筒体的相互固定；由于无需采用粘接工艺进行连接，能够避免使用粘接材料而带来的浪费。
在一些示例中，所述夹持组件包括：
压杠，所述压杠形成有所述第二夹持面；以及
连杆，活动设于所述筒体，并与所述压杠相连接，以使所述连杆能够带动所述压杠在所述闭合位置和打开位置之间移动。
压杠用于将膜层压紧在筒体上，以使膜层限位在第一夹持面和第二夹持面之间；连杆用于带动压杠移动，以使压杠能够在闭合位置和打开位置之间切换，进而实现膜层的夹紧和固定。
在一些示例中，所述筒体上设置有导向孔，所述导向孔的一端贯通至所述筒体的外周壁；所述连杆穿设所述导向孔设置，并能够沿所述导向孔往复移动，以使所述连杆能够带动所述压杠在所述闭合位置和打开位置之间移动。
通过设置导向孔对连杆进行导向，以使连杆能够沿着导向孔所形成的轨迹移动，进而使连杆带动压杠沿着预设轨迹移动，实现对压杠的限位，同时可以提升压杠与筒体配合位置的相对恒定，有助于提升夹持组件夹持膜层时的稳定性。
在一些示例中，所述夹持组件还包括：
第一弹性件，设于所述导向孔，所述第一弹性件分别与所述筒体以及所述连杆相连接，以用于产生将所述连杆向所述导向孔内弹性牵引的作用力。
第一弹性件用于对连杆起到牵引作用，使得连杆能够受到弹性力作用，进而具有带动压杠向闭合位置移动的趋势，以使膜层能够被压杠夹持在筒体上，实现膜层的相对固定。
在一些示例中，所述筒体具有中空部；
所述导向孔远离所述筒体的外周壁的一端贯通至所述中空部；
所述第一弹性件连接于所述中空部的内壁面。
通过将第一弹性件的一端与中空部相连接，能够方便第一弹性件的安装和固定，使其具有更大的安装空间。
在一些示例中，所述第一弹性件包括：
连接件，与所述中空部的内壁面相连接；以及
第一弹簧，一端与所述连接件相连接，另一端与所述连杆相连接。
通过连接件作为将第一弹簧固定到筒体上的连接结构，以方便实现第一弹簧与筒体的相对固定。
在一些示例中，所述第一弹簧套设于所述连杆的外围，并沿所述连杆的长度方向延伸设置。
第一弹簧呈中空螺旋结构，连杆位于第一弹簧的中空部位内，以使第一弹簧能够沿着连杆的长度方向设置，方便第一弹簧的安装和固定，同时减少第一弹簧所占用的空间。
在一些示例中，所述连接件套设于所述连杆的外围，所述连接件的最大外周直径大于所述导向孔的内径。
连接件用于对第一弹簧进行固定，当连接件的最大外周直径大于导向孔的内径时，连接件不能向导向孔内部移动，进而可以对第一弹簧的端部进行固定，以使第一弹簧靠近连接件的一端的端部保持在预设位置。
在一些示例中，所述中空部的内壁面上凹设有第一限位槽，所述导向孔远离所述筒体的外周壁的一端贯通至所述第一限位槽的槽底；所述连接件设于所述第一限位槽。
第一限位槽用于对连接件进行限位，以防止连接件出现沿着导向孔径向的移动，进而防止夹持组件出现不必要的错位。
在一些示例中，所述连杆靠近所述压杠的一端的外周壁上凸设有限位凸部，所述限位凸部的最大外周直径大于所述导向孔的内径。
限位凸部凸出设置在连杆的外周壁，限位凸部的最大外周直径大于导向孔的内径，以使限位凸部能够用来限制连杆插入导向孔的最大深度。
在一些示例中，所述筒体的外周壁上开设有第二限位槽，所述导向孔远离所述筒体的外周壁的一端贯通至所述第二限位槽的槽底；所述压杠处于所述闭合位置时，所述限位凸部嵌入于所述第二限位槽。
通过设置第二限位槽，以形成用于容置限位凸部的空间，进而可以使限位凸部被限定在凹入筒体外周壁上的部位。当压杠处于闭合位置时，第二夹持面与第一夹持面至少部分相互贴合，限位凸部对压杠的移动不产生阻挡。
在一些示例中，所述第一弹簧远离所述连接件的一端与所述限位凸部相连接。
由于限位凸部凸出设置在连杆的外周壁上，使得第一弹簧远离连接件的一端能够沿着连杆的延伸方向延伸至限位凸部处之后与限位凸部相连接，进而可以方便第一弹簧与连杆的相互固定，使得连杆能够受到第一弹簧的弹性力作用。
在一些示例中，所述夹持组件还包括第一驱动件，所述第一驱动件与所述连杆远离所述压杠的一端驱动连接，以用于驱动所述连杆带动所述压杠在所述闭合位置和打开位置之间移动。
第一驱动件用于驱动连杆相对移动，进而使得连杆沿着导向孔的轴向移动过程中，能够对压杠起到牵拉作用，以使压杠可以在闭合位置和打开位置之间切换，进而实现压杠的位置的自动切换。
在一些示例中，所述第一驱动件为气缸或气涨轴。
利用气缸或气涨轴推动连杆沿着轴向移动，进而实现压杠的同步运动，以使压杠可以 实现位置切换。
在一些示例中，所述筒体的外周壁上凹设有定位槽，所述定位槽内形成有所述第一夹持面。
通过设置定位槽，使得压杠移动至闭合位置时，压杠能够至少部分位于定位槽内，进而防止压杠凸出在卷筒外部而导致对卷绕在卷筒上的膜层的损伤。
在一些示例中，所述导向孔贯通至所述定位槽设置。
导向孔用于对连杆进行导向，通过使导向孔贯通至定位槽，使得连杆远离卷筒轴线的一端也位于定位槽内，避免连杆凸出在卷筒外周壁上时对卷绕在卷筒上的膜层产生干涉。
在一些示例中，所述连杆具有用于连接所述压杠的近端以及远离所述压杠的远端；
所述筒体上设置有定位轴，所述连杆可转动地与所述定位轴相连接，所述定位轴位于所述连杆的近端和远端之间；
所述卷筒还包括第二弹性件；所述连杆的远端通过所述第二弹性件与所述筒体相连接，以使所述第二弹性件产生将所述连杆的近端以及所述压杠向所述第一夹持面方向牵引的作用力。
连杆与定位轴转动连接，以使连杆与定位轴相配合，形成类似杠杆机构，当连杆的远端挤压第二弹性件时，第二弹性件能够对连杆起到弹性力作用，进而使得连杆的远端相对定位轴转动，并带动压杠同步运动，实现压杠的位置切换。
在一些示例中，所述夹持组件还包括第二驱动件，所述第二驱动件与所述连杆的远端驱动连接，用于驱动所述连杆以所述定位轴为中心转动。
通过设置第二驱动件来驱动连杆相对定位轴转动，进而实现连杆的相对运动，以使连杆能够带动压杠在打开位置和闭合位置之间移动。
在一些示例中，所述夹持组件还包括设于所述筒体的第三驱动件；
所述连杆包括：
摇杆，与所述第三驱动件驱动连接；
主动杆，与所述摇杆远离所述第三驱动件的一端转动连接；以及
从动杆，一端与所述筒体转动连接，另一端连接所述压杠以及所述主动杆远离所述摇杆的一端；所述第三驱动件用于驱动所述摇杆、所述主动杆以及所述摇杆，以使所述压杠在所述打开位置和所述闭合位置之间移动。
摇杆、主动杆以及从动杆形成连杆机构，第三驱动件用于驱动连杆机构相对运动，进而使得连杆机构能够带动压杠在打开位置和闭合位置之间移动。
在一些示例中，所述筒体上凹设有第三限位槽，所述第三限位槽的内壁面形成所述第一夹持面；所述连杆设于所述筒体的轴向的两端。
第三限位槽用于形成容置压杠的内凹区域，当压杠处于闭合位置时，压杠至少部分位于第三限位槽内，进而避免压杠凸出在筒体的外周壁上时，对膜层造成损坏。
本示例在上述卷筒的示例的基础上，还提出一种用于卷绕膜层的膜层卷绕装置的示例，所述膜层卷绕装置包括：
主卷绕件，用于卷绕所述膜层；
如上述任一项示例所述的卷筒，邻近所述主卷绕件设置；以及
辅助轴，可移动地设于所述主卷绕件与所述卷筒之间；所述辅助轴用于将所述主卷绕件输出的膜层抵推至所述筒体，以使所述膜层能够嵌置于所述第一夹持面与所述第二夹持面之间的间隙。
膜层卷绕在主卷绕件上，当辅助轴将膜层抵推至筒体时，可以通过夹持组件将膜层部分压紧在筒体上，进而实现将膜层固定到卷筒上。
本示例在上述膜层卷绕装置的基础上，还提出一种电池加工系统，包括如上述示例所述的膜层卷绕装置。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中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，还可以根据这些附图示出的结构获得其他的附图。
图1为本申请卷筒一示例的主视图；
图2为本申请卷筒一示例的左视图；
图3为图2中2a-2a向的剖视图；
图4为图3中3b部位的局部放大图；
图5为本申请筒体一示例的主视图；
图6为本申请筒体一示例的左视图；
图7为图6中6a-6a向的剖视图；
图8为本申请的压杠与连杆配合状态一示例的结构示意图；
图9为本申请第一弹性件一示例的结构示意图；
图10为本申请卷筒另一示例的结构示意图；
图11为图10的主视图；
图12为图10的右视图；
图13为本申请筒体另一示例的结构示意图；
图14为图13的右视图；
图15为本申请压杠与连杆配合状态另一示例的结构示意图；
图16为本申请卷筒夹持组件处于打开位置时又一示例的结构示意图；
图17为图16的主视图；
图18为图16的右视图；
图19为本申请膜层卷绕装置一示例的结构示意图；
图20为本申请膜层卷绕装置另一示例的结构示意图；
图21为本申请膜层卷绕装置的夹持组件处于打开位置时一示例的结构示意图；
图22为本申请膜层卷绕装置的夹持组件处于闭合位置时一示例的结构示意图。
附图标号说明：
本申请目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请的一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
需要说明，若本申请实施例中有涉及方向性指示(诸如上、下、左、右、前、后……)，则该方向性指示仅用于解释在某一特定姿态(如附图所示)下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
另外，若本申请实施例中有涉及“第一”、“第二”等的描述，则该“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本申请要求的保护范围之内。
动力电池按是否可充电可以分为一次性电池和可充电电池。目前常见的可充电电池的类型有：铅酸电池、镍氢电池和锂离子电池。锂离子电池目前广泛应用于纯电动车及混合动力车，用于这种用途的锂离子电池的容量相对略低，但有较大的输出、充电电流，也有较长的使用寿命。
锂离子电池是一个复杂的体系，包含了壳体以及设置在壳体内的正极、负极、隔膜、集流体和粘结剂、导电剂等。电池的壳体上设置有注液孔，用于将电解液注入电池内部；电解液用于在锂电池正、负极之间传导离子。电池充放电过程中，涉及的反应包括正负极的电化学反应、锂离子传导和电子传导，以及热量的扩散等。锂电池的生产工艺流程较长，生产过程中涉及有多道工序。
锂电池按照形态可分为圆柱电池、方形电池和软包电池等，其生产工艺有一定差异，整体上，可将锂电制造流程划分为前段工序(极片制造)、中段工序(电芯合成)、后段工序(化成封装)。
锂电池加工过程中有多个需要进行覆膜或者膜层卷绕的工序。其中，在壳体外部，具有外部覆膜工艺需求；在电芯加工过程中，有极片卷绕等膜层卷绕需求。为了方便描述，以下统称上述具有薄膜状结构的覆膜或极片等材料为膜层。
为了方便卷绕膜层，在一些场景下，工作人员需要将膜层的端部与卷筒相互粘接固定，以使膜层的端部能够被固定在卷筒上，然后将膜层卷绕在卷筒上。
在采用粘接固定工艺时，由于需要采用大量的粘结剂或胶带等材料对膜层进行固定，造成连接材料浪费。由于需要将膜层与卷筒进行连接，为了防止膜层脱落，胶带等粘结剂的材料的粘接部位的总长度不能过短，进而使得粘结剂占用了很长一端膜层，造成膜层浪费。由于胶带具有胶水，胶水附着在卷筒上，容易造成卷筒污染。
请参阅图1和图2，本申请针对现有的卷筒中采用粘接的方式对膜层100进行固定导致粘接材料浪费以及膜层100浪费的问题，提出一种卷筒。所述卷筒用于夹持膜层100，卷筒包括筒体20以及设于筒体20的夹持组件30，筒体20形成有第一夹持面21；夹持组件30能够在闭合位置和打开位置之间可移动；夹持组件30具有第二夹持面32；夹持组件30处于打开位置时，第一夹持面21与第二夹持面32之间形成有用于供膜层100至少部分进入两者之间的间隙；夹持组件30处于闭合位置时，第一夹持面21与第二夹持面32之间相互夹紧。
筒体20呈圆柱状，筒体20具有如图2中所示的呈圆形的外周壁，当膜层100卷绕在筒体20上时，膜层100以筒体20的轴线为中心缠绕在筒体20的外周壁上。筒体20上设置有第一夹持面21，当膜层100卷绕在筒体20上时，膜层100的端部至少部分在第二夹持面32的作用下压紧到第一夹持面21上。
夹持组件30与筒体20相连接，并且夹持组件30能够在打开位置和闭合位置之间移动，夹持组件30具有第二夹持面32。膜层100具有用于与夹持组件30相配合的端部。所述打开位置，是指夹持组件30的第二夹持面32与筒体20的第一夹持面21之间具有间隙，该间隙的宽度略大于膜层100的端部的厚度，以使膜层100能够进入第一夹持面21和第二夹持面32之间。所述闭合位置，是指第一夹持面21与第二夹持面32之间的距离小，以使第一夹持面21与第二夹持面32相互贴合夹紧，或者，第一夹持面21与第二夹持面32之间具有间隙，该间隙的厚度小于膜层100的厚度。
夹持组件30可以相对筒体20运动，以使夹持组件30的第二夹持面32与筒体20的第一夹持面21之间的距离可以调节。夹持组件30能够在打开位置和闭合位置之间切换，以使第一夹持面21与第二夹持面32之间的间隙可以随着夹持组件30的移动而改变。当夹持组件30处于打开位置时，第一夹持面21与第二夹持面32之间的间隙足够膜层100放入两者之间，当使夹持组件30带动膜层100同步向闭合位置移动时，第二夹持面32与第一夹持面21之间的距离缩小，直到膜层100被夹紧在第一夹持面21和第二夹持面32之间。
当筒体20上没有卷绕有膜层100时，夹持组件30处于闭合位置，第一夹持面21和第二夹持面32相互紧贴，或者，第一夹持面21与第二夹持面32之间的间隙的宽度呈最小状态。
由于采用可移动的夹持组件30对膜层100进行限位，使得膜层100被夹持在筒体20的外壁上，不需要额外采用胶带等粘接结构来对膜层100进行固定，进而避免胶带等材料的浪费。由于仅需要将膜层100的端部的局部结构夹紧在第一夹持面21和第二夹持面32之间，与夹持组件30不接触的膜层100部位不受影响，进而可以避免现有的长距离的胶带粘接过程中导致的膜层100的浪费。由于不需要采用含有胶水的材料，可以避免对卷筒或膜层100造成污染
在一些示例中，夹持组件30用于夹持膜层100的端部的局部结构，例如，夹持组件30将膜层100的端部宽度方向上的两端夹持固定在第一夹持面21和第二夹持面32之间，或者，夹持组件30将膜层100的端部的宽度方向上的中部位置夹持在第一夹持面21和第二夹持面32之间。在一些示例中，夹持组件30将膜层100的端部整体夹持在第一夹持面21和第二夹持面32之间。其中，第一夹持面21和第二夹持面32沿着膜层100的宽度方向延伸设置，以使膜层100的端部整体位于第一夹持面21和第二夹持面32之间。
在一些示例中，第一夹持面21为筒体20的圆形外周壁上的局部位置。在一些示例中，在筒体20的外周壁上凹设有凹槽，第一夹持面21形成于凹槽内。在一些示例中，在筒体20的外周壁上凸设有凸出结构，第一夹持面21为凸出结构上的部分表面。
在一些示例中，筒体20的外周壁上凹设有凹槽，第一夹持面21形成于凹槽内，当夹持组件30处于闭合位置时，夹持组件30的第二夹持面32位于凹槽内，在垂直于筒体20的轴向的平面中投影时，夹持组件30可以位于筒体20的外周缘内侧，以使夹持组件30不会凸出在筒体20的外周壁外部。
在一些示例中，筒体20为中空结构，以减轻筒体20的重量，同时可以减少筒体20所需材料。筒体20的中空部位可以位于筒体20的中部，即如图2中所示，筒体20设置有中空部23，为了使筒体20的重心与其轴心保持一致，上述中空部23的长度方向沿筒体20的轴向延伸，并且中空部23与筒体20的轴线重合。
请参阅图2、图3和图4，在一些示例中，夹持组件30包括压杠31和连杆33，压杠31形成有第二夹持面32；连杆33活动设于筒体20，并与压杠31相连接，以使连杆33能够带动压杠31在闭合位置和打开位置之间移动。
压杠31用于与筒体20相配合，夹持膜层100；连杆33用于带动压杠31相对筒体20移动，以使压杠31能够在闭合位置和打开位置之间移动，进而使得压杠31能够用于夹紧 膜层100，实现将膜层100固定在卷筒上。
连杆33与筒体20活动连接，以使连杆33能够沿着预设轨迹移动，当连杆33沿着预设轨迹移动时，连杆33带动压杠31同步移动，以使压杠31能够沿着预设轨迹在打开位置和闭合位置之间切换。
所述预设轨迹可以为筒体20的径向方向，即，预设轨迹呈直线；如图2中所示为例，压杠31自卷筒的外周壁沿筒体20的径向方向，向远离筒体20的外周壁方向移动切换至所述打开位置，压杠31沿着筒体20的径向方向，向靠近筒体20的外周壁方向移动切换至所述闭合位置。在一些示例中，所述预设轨迹也可以曲线或折线，使压杠31能够相对靠近或远离筒体20的外周壁方向移动即可。
在一些示例中，在筒体20上设置有用于驱动连杆33沿着预设轨迹移动的驱动装置。连杆33相对筒体20移动时，可以采用气缸、电机或其他能够驱动连杆33运动的结构作为驱动装置。
请结合参阅图5、图6以及图7，在一些示例中，筒体20上设置有导向孔22，导向孔22的一端贯通至筒体20的外周壁；连杆33穿设导向孔22设置，并能够沿导向孔22往复移动，以使连杆33能够带动压杠31在闭合位置和打开位置之间移动。
导向孔22具有贯通至筒体20的外周壁的第一端，连杆33自导向孔22的第一端插入导向孔22内，并能够沿着导向孔22的轴向往复移动，以使能够带动压杠31在打开位置和闭合位置之间切换。
导向孔22可以为开设于筒体20上的盲孔，也可以为开设于筒体20上的通孔。当筒体20具有上述示例所述的中空部23时，导向孔22可以连通中空部23。
通过设置导向孔22，能够对连杆33进行限位，以使连杆33能够按照导向孔22所形成的轨迹移动，进而可以限制压杠31的轨迹，使得压杠31能够更好地与筒体20相配合，避免第一夹持面21与第二夹持面32出现错位，进而有助于提升第一夹持面21与第二夹持面32的对接精度。
请参阅图4、图8以及图9，在一些示例中，夹持组件30还包括设于导向孔22的第一弹性件35，第一弹性件35分别与筒体20以及连杆33相连接，以用于产生将连杆33向导向孔22内弹性牵引的作用力。
第一弹性件35的一端限位于筒体20上，第一弹性件35的另一端与连杆33相连接，以使连杆33沿着导向孔22移动时，第一弹性件35能够对连杆33产生弹性牵引力，在第一弹性件35的弹性牵引力下，连杆33具有沿着导向孔22向靠近筒体20的内部移动的趋势。在第一弹性件35的弹性牵引力下，压杠31具有向闭合位置移动的趋势，使得第二夹持面32具有向第一夹持面21夹紧的趋势，进而可以使压杠31能够将膜层100压紧在筒体20上。
请继续参阅图4，在一些示例中，筒体20具有中空部23；导向孔22远离筒体20的外周壁的一端贯通至中空部23；第一弹性件35连接于中空部23的内壁面。
导向孔22为开设于筒体20上的贯通孔，以使连杆33的远离压杠31的一端能够延伸至中空部23位置。第一弹性件35连接至中空部23的内壁面，以方便对第一弹性件35进行固定。为了避免影响筒体20的正常功能，设置于筒体20上的导向孔22的内径不宜过大。在一些示例中，第一弹性件35部分伸入导向孔22，并与连杆33相连接，通过将第一弹性件35与中空部23的内壁面相连接，可以实现第一弹性件35的固定，并且，使第一弹性件35局部沿着导向孔22延伸，并与连杆33相连接，进而可以充分利用导向孔22内部空间。在一些示例中，第一弹性件35与连杆33远离压杠31的一端相连接，以对连杆33起到弹性牵引作用，并且第一弹性件35不占用导向孔22内部空间。
请参阅图4和图9，在一些示例中，第一弹性件35包括连接件352和与连接件352相连接的第一弹簧351，连接件352与中空部23的内壁面相连接；第一弹簧351的一端与连 接件352相连接，另一端与连杆33相连接。
连接件352用于与筒体20相连接，第一弹簧351用于与连杆33相连接，以方便实现第一弹簧351的固定。由于第一弹簧351可伸缩，并且具有一定的柔性，通过在筒体20的中空部23的内壁面设置连接件352，以方便对具有可变性性能的第一弹簧351进行固定。
在安装第一弹簧351时，可以将第一弹簧351沿导向孔22轴向设置，以充分利用导向孔22内部空间；也可以将第一弹簧351设置在中空部23的内壁面上，以方便安装。
请参阅图4、图8和图9，进一步地，在一些示例中，第一弹簧351套设于连杆33的外围，并沿连杆33的长度方向延伸设置。
第一弹簧351套设于连杆33的外部，使第一弹簧351占用连杆33的外周壁与导向孔22的内壁面之间的间隙，以充分利用导向孔22内部空间。由于第一弹簧351套设在连杆33的外围时，能够使第一弹簧351沿着连杆33的轴向延伸，进而可以起到对第一弹簧351进行限位的作用，防止第一弹簧351产生错位。
请参阅图4，在一些示例中，连接件352套设于连杆33的外围，连接件352的最大外周直径大于导向孔22的内径。
连接件352上开设有通孔，连杆33穿设通孔设置，并且连接件352上的通孔的内径大于连杆33的外径，以使连杆33能够相对连接件352轴向移动。通过将连接件352套设在连杆33上，能够方便对连接件352和第一弹簧351进行固定。由于连接件352的最大外周直径大于导向孔22的内径，使得连接件352不能向导向孔22内部移动，进而实现对连接件352的限位。
进一步地，在一些示例中，中空部23的内壁面上凹设有第一限位槽24，导向孔22远离筒体20的外周壁的一端贯通至第一限位槽24的槽底；连接件352设于第一限位槽24。
第一限位槽24为凹设于中空部23的内壁面上的凹槽，连接件352设置在第一限位槽24内之后，通过第一限位槽24阻挡连接件352，以使连接件352不能出现沿着导向孔22径向方向上的移动，进而可以防止连接件352出现错位。连接件352被固定在第一限位槽24内，避免连接件352在第一弹簧351的作用下产生不必要的移动，进而防止第一弹性件35脱落。
请参阅图4和图8，连杆33靠近压杠31的一端的外周壁上凸设有限位凸部334，限位凸部334的最大外周直径大于导向孔22的内径。
限位凸部334凸出设置在连杆33的外周壁上，以使连杆33插入导向孔22时，限位凸部334不能进入导向孔22内。通过限位凸部334限制连杆33插入导向孔22内的最大深度，进而使得压杠31的第二夹持面32与筒体20的第一夹持面21相互夹紧时，连杆33不能继续向导向孔22内部移动，以对连杆33以及压杠31起到限位作用。
限位凸部334可以为设置在连杆33外周壁上的凸块，也可以为环设于连杆33外壁上的凸环。
请参阅图4和图7，在一些示例中，筒体20的外周壁上开设有第二限位槽25，导向孔22远离筒体20的外周壁的一端贯通至第二限位槽25的槽底；压杠31处于闭合位置时，限位凸部334嵌入于第二限位槽25。
第二限位槽25凹设于筒体20的外周壁。由于限位凸部334设置在连杆33靠近压杠31的一端，第二限位槽25用于容置限位凸部334，当压杠31的第二夹持面32与筒体20的第一夹持面21相互夹紧时，限位凸部334位于第二限位槽25内，以使限位凸部334不会对压杠31产生影响。
进一步地，在一些示例中，第一弹簧351远离连接件352的一端与限位凸部334相连接。
由于弹簧可以沿着导向孔22的轴向延伸，通过限位凸部334来对第一弹簧351远离连接件352的一端进行固定，可以方便第一弹簧351与连杆33之间的相互固定，方便第 一弹性件35的安装。
在一些示例中，夹持组件30还包括第一驱动件(图中未示出)，第一驱动件与连杆33远离压杠31的一端驱动连接，以用于驱动连杆33带动压杠31在闭合位置和打开位置之间移动。
在一些示例中，第一驱动件为气缸或气涨轴，通过第一驱动件带动连杆33沿着导向孔22的轴向移动，进而实现压杠31在闭合位置和打开位置之间移动。
第一驱动件可以设置在筒体20的中空部23，也可以设置在筒体20上的任意可以与连杆33驱动连接的位置。通过第一驱动件驱动连杆33移动时，连杆33拉伸第一弹性件35，使得连杆33受到第一弹性件35的弹性牵引力作用，进而使连杆33以及压杠31具有向闭合位置移动的趋势。当第一驱动件作用于连杆33上的作用力消失时，在第一弹性件35的作用下，连杆33带动压杠31向闭合位置移动，进而将膜层100弹性夹持在第一夹持面21和第二夹持面32之间，以实现膜层100的固定。
当连杆33具有上述示例所述的限位凸部334时，第一驱动件作用于连杆33上的作用力消失，连杆33在第一弹性件35的弹性力作用下向导向孔22内部移动，限位凸部334抵接在第二限位槽25的槽底时，压杠31达到闭合位置，第一夹持面21和第二夹持面32将膜层100夹紧。
请参阅图5、图6和图7，进一步地，在一些示例中，筒体20的外周壁上凹设有定位槽27，定位槽27内形成有第一夹持面21。
在如图2所示的状态中，压杠31远离筒体20的轴心的一端与筒体20的轴心之间的距离为第一距离；定位槽27为凹设于筒体20的外周壁上的凹槽，当压杠31处于闭合位置时，压杠31至少部分位于定位槽27内，以使第一距离与筒体20的外周壁所在环面的半径的差值相对更小。由于膜层100卷绕在筒体20的外周壁上，通过设置定位槽27，使得压杠31位于闭合位置时，压杠31凸出至筒体20的外周壁上的部位更少，进而避免将卷绕在筒体20上的膜层100顶出，避免对卷绕在筒体20上的膜层100造成损坏。
进一步地，在一些示例中，导向孔22贯通至定位槽27设置。连杆33依次通过定位槽27和导向孔22，向筒体20内部插入设置，以使连杆33能够带动压杠31在闭合位置和打开位置之间切换。当导向孔22贯穿至定位槽27时，压杠31处于闭合位置状态下，连杆33被完全隐藏在定位槽27内，进而避免连杆33对卷绕在筒体20上的膜层100产生影响，防止连杆33与膜层100之间出现相互干涉，进而避免膜层100损坏。在安装第一驱动件时，可以将第一驱动件的驱动端伸入导向孔22后连接连杆33；或者，将连杆33远离压杠31的一端凸出至导向孔22远离定位槽27的一端外部，并与第一驱动件相连接；当采用气涨轴等结构时，可以方便实现连杆33的驱动。
请参阅图10、图11以及图12，在一些示例中，连杆33具有用于连接压杠31的近端以及远离压杠31的远端；筒体20上设置有定位轴(图中未示出)，连杆33可转动地与定位轴相连接，定位轴位于连杆33的近端和远端之间；卷筒还包括第二弹性件36；连杆33的远端通过第二弹性件36与筒体20相连接，以使第二弹性件36产生将连杆33的近端以及压杠31向第一夹持面21方向牵引的作用力。
请结合参阅图13、图14和图15，定位轴与筒体20相连接，并且连杆33与定位轴转动连接，以使连杆33能够以定位轴为中心转动。所述“近”和“远”是指连杆上的任意部位与压杠31之间的距离。连杆33的近端用于与压杠31相连接，连杆33的远端用于与第二弹性件36相连接，连杆33在定位轴的作用下，形成以定位轴为转动中心的类似杠杆结构。当连杆33对第二弹性件36进行挤压或拉伸操作时，在第二弹性件36的弹性作用下，连杆33以定位轴为中心转动，使得安装在连杆33远端的压杠31同步运动，进而实现压杠31在闭合位置和打开位置之间移动切换。
第二弹性件36可以为压缩弹簧，通过弹性变形，实现连杆33的相对转动。本示例中， 可以在筒体20上设置驱动机构，用于驱动连杆33以定位轴为中心转动。
由于连杆33可以带动压杠31相对移动，使得压杠31可以在第二弹性件36的作用下具有向闭合位置移动的趋势，进而可以将膜层100夹持在第二夹持面32和第一夹持面21之间。
进一步地，在一些示例中，夹持组件30还包括第二驱动件(图中未示出)，第二驱动件与连杆33的远端驱动连接，用于驱动连杆33以定位轴为中心转动。第二驱动件可以为电机、气缸、电缸或其他能够驱动连杆33以定位轴为中心转动的装置。通过驱动连杆33的远端相对运动，使得连杆33能够带动压杠31同步运动，实现压杠31在打开位置和闭合位置之间的移动切换，同时可以实现压杠31的自动控制。
在一些示例中，定位轴和连杆33设置在筒体20的轴向的两端，以使连杆33不会对膜层100产生干涉，进而避免连杆33将膜层100顶起导致的膜层100损坏。
请参阅图13和图14，进一步地，在一些示例中，筒体20的外周壁上凹设有第三限位槽26，压杠31在连杆33的作用下移动至闭合位置时，压杠31至少部分嵌入在第三限位槽26内，进而防止压杠31凸出于筒体20外部过多而导致的膜层100损伤。第三限位槽26可以为沿筒体20的径向贯通筒体20的外周壁上的贯通槽，也可以为凹设于筒体20表面的内凹槽。
请参阅图16、图17和图18，在一些示例中，夹持组件30还包括设于筒体20的第三驱动件(图中未示出)；连杆33包括摇杆331、主动杆332以及从动杆333，摇杆331与第三驱动件驱动连接；主动杆332与摇杆331远离第三驱动件的一端转动连接；从动杆333的一端与筒体20转动连接，另一端连接压杠31以及主动杆332远离摇杆331的一端；第三驱动件用于驱动摇杆331、主动杆332以及摇杆331，以使压杠31在打开位置和闭合位置之间移动。
摇杆331、主动杆332以及从动杆333组合形成多连杆机构，通过第三驱动件驱动摇杆331转动时，多连杆机构同步运动，使得多连杆机构能够带动压杠31在打开位置和闭合位置之间移动切换。
本示例中，第三驱动件可以为电机、气缸或其他能够驱动摇杆331相对转动的装置。通过采用第三驱动件带动压杠31相对移动，使得压杠31能够按照预设轨迹相对运动，进而实现对膜层100的定位夹持和定位。
进一步地，在一些示例中，筒体20上凹设有第三限位槽26，第三限位槽26的内壁面形成第一夹持面21；连杆33设于筒体20的轴向的两端。
第三限位槽26形成用于容置压杠31的空间，以使压杠31处于闭合位置时，压杠31至少部分位于第三限位槽26内，以减少压杠31凸出于筒体20外周壁的高度，进而避免压杠31凸出在筒体20外周壁时，压杠31将膜层100顶起而导致的膜层100损伤。由于连杆33位于筒体20的轴向的两端，能够提高压杠31的稳定性，同时避免连杆33对膜层100产生干涉，防止连杆33损伤膜层100。
请参阅图19和图20，本示例在上述卷筒的示例的基础上，还提出一种膜层卷绕装置的示例。膜层卷绕装置用于卷绕膜层100，膜层卷绕装置包括主卷绕件10、辅助轴11以及如上述任一示例中所述的卷筒。主卷绕件10用于卷绕膜层100；如上述任一示例中所述的卷筒邻近主卷绕件10设置；辅助轴11可移动地设于主卷绕件10与卷筒之间；辅助轴11用于将主卷绕件10输出的膜层100抵推至筒体20，以使膜层100能够嵌置于第一夹持面21与第二夹持面32之间的间隙。
待加工的膜层100卷绕在主卷绕件10上，通过辅助轴11控制膜层100的输送方向。辅助轴11的数量可以为多个，以调整膜层100的输送方向。
当辅助轴11移动至靠近筒体20位置时，辅助轴11带动膜层100同步移动至筒体20，以将膜层100抵推至筒体20处。当夹持组件30移动至打开位置时，沿如图21所示的切断位将膜层100切断，在辅助轴11的压力下，膜层100的端部伸入第一夹持面21和第二 夹持面32之间的间隙，将夹持组件30切换至闭合位置，以使膜层100被夹紧在第一夹持面21和第二夹持面32之间，实现膜层100端部在筒体20上的固定。当膜层100的端部固定在筒体20上之后，可以通过其他设备驱动筒体20转动，进而将膜层100卷绕在筒体20上。
值得注意的是，由于本申请膜层卷绕装置的示例是基于上述卷筒的示例，因此，本申请膜层卷绕装置的示例包括上述卷筒全部示例的全部技术方案，且所达到的技术效果也完全相同，在此不再赘述。
本示例在上述膜层卷绕装置的基础上，还提出一种电池加工系统的示例，所述电池加工系统包括如上述示例所述的膜层卷绕装置。
请结合参阅图1至图22，在一些示例中，卷筒具有筒体20和夹持组件30，夹持组件30包括连杆33以及用于驱动连杆33沿着预设轨迹移动的驱动装置。夹持组件30能够在打开位置和闭合位置之间移动，以使夹持组件30处于打开位置时，膜层100的端部可以伸入第一夹持面21和第二夹持面32之间；当夹持组件30切换至闭合位置时，第一夹持面21和第二夹持面32相互夹紧，以使膜层100被夹持固定在第一夹持面21和第二夹持面32之间的间隙内，进而将膜层100的端部固定在筒体20上。由于采用夹持组件30对膜层100进行固定，不需要采用现有的胶带等装置进行固定，进而可以减少胶带等资源的利用；由于胶带上具有胶水，胶水附着在筒体20外周壁上，容易对筒体20表面产生影响，影响筒体20的二次使用，本示例中利用夹持组件30对膜层100进行夹持固定，可以减少对筒体20的影响，避免筒体20被胶水等杂质污染。
以上所述仅为本申请的优选示例，并非因此限制本申请的专利范围，凡是在本申请的发明构思下，利用本申请说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本申请的专利保护范围内。

Claims (22)

  1. 一种卷筒，用于夹持膜层，其中，所述卷筒包括：
    筒体，所述筒体形成有第一夹持面；以及
    夹持组件，在闭合位置和打开位置之间可移动地设于所述筒体；所述夹持组件具有第二夹持面；所述夹持组件处于所述打开位置时，所述第一夹持面与所述第二夹持面之间形成有用于供所述膜层至少部分进入两者之间的间隙；所述夹持组件处于所述闭合位置时，所述第一夹持面与所述第二夹持面之间相互夹紧。
  2. 如权利要求1所述的卷筒，其中，所述夹持组件包括：
    压杠，所述压杠形成有所述第二夹持面；以及
    连杆，活动设于所述筒体，并与所述压杠相连接，以使所述连杆能够带动所述压杠在所述闭合位置和打开位置之间移动。
  3. 如权利要求2所述的卷筒，其中，所述筒体上设置有导向孔，所述导向孔的一端贯通至所述筒体的外周壁；所述连杆穿设所述导向孔设置，并能够沿所述导向孔往复移动，以使所述连杆能够带动所述压杠在所述闭合位置和打开位置之间移动。
  4. 如权利要求3所述的卷筒，其中，所述夹持组件还包括：
    第一弹性件，设于所述导向孔，所述第一弹性件分别与所述筒体以及所述连杆相连接，以用于产生将所述连杆向所述导向孔内弹性牵引的作用力。
  5. 如权利要求4所述的卷筒，其中，所述筒体具有中空部；
    所述导向孔远离所述筒体的外周壁的一端贯通至所述中空部；
    所述第一弹性件连接于所述中空部的内壁面。
  6. 如权利要求5所述的卷筒，其中，所述第一弹性件包括：
    连接件，与所述中空部的内壁面相连接；以及
    第一弹簧，一端与所述连接件相连接，另一端与所述连杆相连接。
  7. 如权利要求6所述的卷筒，其中，所述第一弹簧套设于所述连杆的外围，并沿所述连杆的长度方向延伸设置。
  8. 如权利要求6或7所述的卷筒，其中，所述连接件套设于所述连杆的外围，所述连接件的最大外周直径大于所述导向孔的内径。
  9. 如权利要求8所述的卷筒，其中，所述中空部的内壁面上凹设有第一限位槽，所述导向孔远离所述筒体的外周壁的一端贯通至所述第一限位槽的槽底；所述连接件设于所述第一限位槽。
  10. 如权利要求6至图9中任意一项所述的卷筒，其中，所述连杆靠近所述压杠的一端的外周壁上凸设有限位凸部，所述限位凸部的最大外周直径大于所述导向孔的内径。
  11. 如权利要求10所述的卷筒，其中，所述筒体的外周壁上开设有第二限位槽，所述导向孔远离所述筒体的外周壁的一端贯通至所述第二限位槽的槽底；所述压杠处于所述闭合位置时，所述限位凸部嵌入于所述第二限位槽。
  12. 如权利要求10或11所述的卷筒，其中，所述第一弹簧远离所述连接件的一端与所述限位凸部相连接。
  13. 如权利要求2至12中的任一项所述的卷筒，其中，所述夹持组件还包括第一驱动件，所述第一驱动件与所述连杆远离所述压杠的一端驱动连接，以用于驱动所述连杆带动所述压杠在所述闭合位置和打开位置之间移动。
  14. 如权利要求13所述的卷筒，其中，所述第一驱动件为气缸或气涨轴。
  15. 如权利要求3至12中的任一项所述的卷筒，其中，所述筒体的外周壁上凹设有定位槽，所述定位槽内形成有所述第一夹持面。
  16. 如权利要求15所述的卷筒，其中，所述导向孔贯通至所述定位槽设置。
  17. 如权利要求2所述的卷筒，其中，所述连杆具有用于连接所述压杠的近端以及远离所述压杠的远端；
    所述筒体上设置有定位轴，所述连杆可转动地与所述定位轴相连接，所述定位轴位于所述连杆的近端和远端之间；
    所述卷筒还包括第二弹性件；所述连杆的远端通过所述第二弹性件与所述筒体相连接，以使所述第二弹性件产生将所述连杆的近端以及所述压杠向所述第一夹持面方向牵引的作用力。
  18. 如权利要求17所述的卷筒，其中，所述夹持组件还包括第二驱动件，所述第二驱动件与所述连杆的远端驱动连接，用于驱动所述连杆以所述定位轴为中心转动。
  19. 如权利要求2所述的卷筒，其中，所述夹持组件还包括设于所述筒体的第三驱动件；
    所述连杆包括：
    摇杆，与所述第三驱动件驱动连接；
    主动杆，与所述摇杆远离所述第三驱动件的一端转动连接；以及
    从动杆，一端与所述筒体转动连接，另一端连接所述压杠以及所述主动杆远离所述摇杆的一端；所述第三驱动件用于驱动所述摇杆、所述主动杆以及所述摇杆，以使所述压杠在所述打开位置和所述闭合位置之间移动。
  20. 如权利要求17至19中的任一项所述的卷筒，其中，所述筒体上凹设有第三限位槽，所述第三限位槽的内壁面形成所述第一夹持面；所述连杆设于所述筒体的轴向的两端。
  21. 一种膜层卷绕装置，用于卷绕膜层，其中，所述膜层卷绕装置包括：
    主卷绕件，用于卷绕所述膜层；
    如权利要求1至20中的任一项所述的卷筒，邻近所述主卷绕件设置；以及
    辅助轴，可移动地设于所述主卷绕件与所述卷筒之间；所述辅助轴用于将所述主卷绕件输出的膜层抵推至所述筒体，以使所述膜层能够嵌置于所述第一夹持面与所述第二夹持面之间的间隙。
  22. 一种电池加工系统，其中，包括如权利要求21所述的膜层卷绕装置。
PCT/CN2023/123452 2022-11-08 2023-10-08 卷筒、膜层卷绕装置及电池加工系统 Ceased WO2024099005A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202211403145.7A CN115818367A (zh) 2022-11-08 2022-11-08 卷筒、膜层卷绕装置及电池加工系统
CN202211403145.7 2022-11-08

Publications (1)

Publication Number Publication Date
WO2024099005A1 true WO2024099005A1 (zh) 2024-05-16

Family

ID=85527523

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2023/123452 Ceased WO2024099005A1 (zh) 2022-11-08 2023-10-08 卷筒、膜层卷绕装置及电池加工系统

Country Status (2)

Country Link
CN (1) CN115818367A (zh)
WO (1) WO2024099005A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115818367A (zh) * 2022-11-08 2023-03-21 宁德时代新能源科技股份有限公司 卷筒、膜层卷绕装置及电池加工系统

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0616342A (ja) * 1992-06-30 1994-01-25 Kawasaki Steel Corp 金属帯巻き取り方法および金属帯巻き取り用ゴムスリーブ
US20080196614A1 (en) * 2007-02-20 2008-08-21 Jorg Koberg Clamping and releasing flexible plates to and from an imaging cylinder
CN101980941A (zh) * 2008-03-28 2011-02-23 德国捷德有限公司 存储片状货品的设备
CN104555610A (zh) * 2013-10-28 2015-04-29 常州小河水清包装材料厂 塑料包装膜收卷辊
CN216272178U (zh) * 2021-11-27 2022-04-12 新乡市新瑞电池材料有限公司 一种锂电池隔膜纸生产用废料自动收卷装置
CN115818367A (zh) * 2022-11-08 2023-03-21 宁德时代新能源科技股份有限公司 卷筒、膜层卷绕装置及电池加工系统
CN116199047A (zh) * 2023-04-27 2023-06-02 苏州国融前沿技术有限公司 一种隔音棉生产用绕卷装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104555609A (zh) * 2013-10-17 2015-04-29 常州市天阳物资有限公司 纺织机械的卷筒装置
CN203959547U (zh) * 2014-07-30 2014-11-26 浙江南泰合成革有限公司 合成革基布收卷轴
CN205132767U (zh) * 2015-10-26 2016-04-06 新昌县儒岙镇隆昌机械厂 一种新型的布料卷收辊
CN205527080U (zh) * 2016-02-24 2016-08-31 响水县嘉亿纺织有限公司 一种具有固定布料功能的纺织卷筒
CN208182378U (zh) * 2018-04-02 2018-12-04 苏州天裕塑胶有限公司 一种卷芯管
CN208994875U (zh) * 2018-10-10 2019-06-18 苏州天裕塑胶有限公司 一种防滑卷芯管
CN112850256A (zh) * 2019-11-12 2021-05-28 江苏晟坤生物科技有限公司 一种卫生纸生产加工用绕卷设备
CN211110435U (zh) * 2019-11-22 2020-07-28 嘉兴金都纺织股份有限公司 一种用于大圆机的布料收卷轴
CN213738028U (zh) * 2020-11-16 2021-07-20 浙江长兴昌胜包装材料有限公司 一种用于收卷无纺布的芯筒
CN113651177A (zh) * 2021-08-03 2021-11-16 广州安是航空票务有限公司 一种效果好的输电线缠绕回收装置
CN216948809U (zh) * 2022-01-16 2022-07-12 北京宇阳泽丽防水材料有限责任公司 一种防腐耐用的eva防水卷材

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0616342A (ja) * 1992-06-30 1994-01-25 Kawasaki Steel Corp 金属帯巻き取り方法および金属帯巻き取り用ゴムスリーブ
US20080196614A1 (en) * 2007-02-20 2008-08-21 Jorg Koberg Clamping and releasing flexible plates to and from an imaging cylinder
CN101980941A (zh) * 2008-03-28 2011-02-23 德国捷德有限公司 存储片状货品的设备
CN104555610A (zh) * 2013-10-28 2015-04-29 常州小河水清包装材料厂 塑料包装膜收卷辊
CN216272178U (zh) * 2021-11-27 2022-04-12 新乡市新瑞电池材料有限公司 一种锂电池隔膜纸生产用废料自动收卷装置
CN115818367A (zh) * 2022-11-08 2023-03-21 宁德时代新能源科技股份有限公司 卷筒、膜层卷绕装置及电池加工系统
CN116199047A (zh) * 2023-04-27 2023-06-02 苏州国融前沿技术有限公司 一种隔音棉生产用绕卷装置

Also Published As

Publication number Publication date
CN115818367A (zh) 2023-03-21

Similar Documents

Publication Publication Date Title
EP3951968B1 (en) Apparatus and method for preparing electrode assembly
WO2025157031A1 (zh) 一种电极组件及电池
JP3794261B2 (ja) 渦巻状電極群巻回方法と装置およびそれを用いた電池
US12492095B2 (en) Apparatus for manufacturing electrode assembly, electrode assembly manufactured therethrough, and secondary battery
US20150086821A1 (en) Flat wound secondary battery and method for producing same
JP7756751B2 (ja) 電池の製造方法
US12512502B2 (en) Method of manufacturing battery
WO2024099005A1 (zh) 卷筒、膜层卷绕装置及电池加工系统
CN115911582A (zh) 电池的制造方法
WO2024164769A1 (zh) 电化学装置和电子装置
CN115706268A (zh) 电池的制造方法
WO2025179721A9 (zh) 电芯卷绕设备及方法
KR101929475B1 (ko) 이차전지용 전극조립체 및 이를 포함하는 이차전지
US20230048065A1 (en) Method of manufacturing battery
WO2023142661A1 (zh) 卷绕设备以及卷绕方法
CN104821415B (zh) 用于二次电池的卷绕装置
JP2000138076A (ja) リチウムイオンポリマ二次電池及びその製造装置並びに製造方法
US20230046533A1 (en) Method of manufacturing battery
CN219086043U (zh) 卷针、卷绕装置及电池制造设备
US20240379988A1 (en) Winding device and winding method
EP4560749A1 (en) Transfer device for secondary battery
WO2025208781A1 (zh) 卷绕装置
CN117976813A (zh) 一种电池
KR20060085439A (ko) 이차 전지용 극판 권취장치

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23887697

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 23887697

Country of ref document: EP

Kind code of ref document: A1