WO2025148355A1 - 卷针、卷绕设备及电池加工系统 - Google Patents
卷针、卷绕设备及电池加工系统Info
- Publication number
- WO2025148355A1 WO2025148355A1 PCT/CN2024/116112 CN2024116112W WO2025148355A1 WO 2025148355 A1 WO2025148355 A1 WO 2025148355A1 CN 2024116112 W CN2024116112 W CN 2024116112W WO 2025148355 A1 WO2025148355 A1 WO 2025148355A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- needle
- winding
- diaphragm
- assembly
- unwinding
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—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
Definitions
- the present application relates to the field of battery processing, and in particular to a winding needle, a winding device and a battery processing system.
- the present application provides a winding needle, a winding device and a battery processing system, which can alleviate the problem of low yield caused by misalignment of the tabs during the winding process of the electrode assembly.
- an embodiment of the present application provides a needle winding device, comprising:
- At least two outer needles surround the inner needle along the circumference of the inner needle, and the outer needles are movably arranged on the circumference of the inner needle along the radial direction of the inner needle;
- the first structural component is held against the outer needle, and the first structural component can move relative to the outer needle along the axial direction of the inner needle to push the outer needle away from the inner needle along the radial direction of the inner needle.
- an outer needle which surrounds the inner needle and can move radially along the inner needle, and a first structural member which abuts against the outer needle is provided, so that the outer needle is pushed away from the inner needle radially along the inner needle through the first structural member, thereby achieving the effect of expanding the outer diameter of the winding needle; at the same time, the first structural member can also be separated from the outer needle.
- the winding needle also includes an elastic member disposed inside the winding needle, one end of the elastic member is connected to the outer needle, and the other end of the elastic member can be connected to the inner needle or another outer needle, and the elastic member is used to apply a force to the outer needle pointing in the direction of the inner needle.
- a force pointing in the direction of the inner needle is applied to the outer needle by an elastic member, so that the elastic member can press the outer needle against the first structural member, and the first structural member can cooperate with the elastic member to drive the outer needle to move closer to or away from the inner needle along the radial direction of the inner needle, thereby enabling the winding needle to have the function of expanding and reducing the outer diameter, thereby facilitating better reduction of the misalignment of the pole ears during the winding process of the electrode assembly.
- the first structural member includes a first inclined surface, which is inclined relative to the axis of the inner needle and forms a first angle with the axis of the inner needle.
- the first inclined surface is supported by the outer needle so that the outer needle can move relative to the first structural member along the first inclined surface.
- the first structural member includes a first inclined surface, and the first inclined surface is pressed against the outer needle. At this time, the movement of the first structural member can push the outer needle to move along the first inclined surface away from the inner needle. At the same time, under the action of the tension of the elastic member or the electrode assembly, the outer needle can also move along the first inclined surface to approach the inner needle when the first structural member moves in the opposite direction, thereby allowing the outer diameter of the winding needle to expand or shrink.
- the first angle ranges from 40° to 50°.
- the technical solution of this embodiment provides some angle ranges of the first inclined planes, so as to limit the distance that the outer needle can move radially along the inner needle through the angle of the first inclined plane, so that the change of the outer diameter of the winding needle can be adjusted by moving the first structural member a shorter distance, so that the adjustment of the outer diameter of the winding needle can have a faster response speed; at the same time, it can also reduce the resistance between the first structural member and the outer needle, thereby reducing the friction loss between the first structural member and the outer needle and increasing the service life of the winding needle.
- the length of the first slope ranges from 3 mm to 5 mm.
- the technical solution of this embodiment provides some length ranges of the first inclined plane to limit the distance that the outer needle can move radially along the inner needle through the length of the first inclined plane, thereby limiting the range of variation of the outer diameter of the winding needle to reduce the occurrence of misalignment of the pole ears during the winding process of the electrode assembly.
- the winding needle also includes a second structural member, which is respectively arranged at opposite ends of the inner needle along the axis of the inner needle with the first structural member, and the second structural member is at least supported against the outer needle along the axis of the inner needle; the first structural member can move relative to the second structural member along the axis of the inner needle.
- the first structural member and the second structural member are arranged at the two ends of the inner needle, and the first structural member and the second structural member can respectively support the two ends of the outer needle; in the process of the first structural member moving and pushing the outer needle to move along the radial direction of the inner needle, the outer needle can always be supported by the second structural member, so that the second structural member cooperates with the first structural member to jointly support the outer needle, thereby increasing the stability of the outer needle during movement and reducing the tendency of the outer needle to be skewed during movement.
- the second structural member includes a second inclined surface, the second inclined surface abuts against the outer needle, and a second angle is formed between the second inclined surface and the axis of the inner needle;
- the projection of the intersection of the plane where the second inclined surface is located and the plane where the first inclined surface is located along the radial direction of the inner needle is located in the middle area of the inner needle.
- a second inclined plane is arranged on the second structural member, and the intersection of the second inclined plane and the first inclined plane is located in the middle area of the inner needle, so that the inclination directions of the first inclined plane and the second inclined plane are opposite; during the movement of the first structural member and pushing the outer needle to move, this arrangement enables the outer needle to always abut against the second inclined plane and move along the second inclined plane, so as to support the outer needle through the second inclined plane and improve the stability of the outer needle movement.
- the inclination angle of the second inclined plane is made the same as that of the first inclined plane, so that when the first structural member moves and pushes the outer needle to move, the outer needle can always abut against the second inclined plane and move along the second inclined plane, so that the outer needle is supported by the second inclined plane, thereby further improving the stability of the outer needle movement and reducing the tendency of the outer needle to tilt during movement.
- two third structural members are arranged on the outer needle, and are respectively supported against the first structural member and the second structural member, so that the first structural member and the second structural member can both support the outer needle through the third structural member, thereby increasing the stability of the outer needle during movement and reducing the tendency of the outer needle to tilt during movement.
- the two third structural members each include a third inclined surface, one of the two third inclined surfaces is parallel to the adjacent first inclined surface and abuts against the first inclined surface, and the other of the two third inclined surfaces is parallel to the adjacent second inclined surface and abuts against the second inclined surface.
- a third inclined plane is arranged on the third structural member, and the two third inclined planes are respectively parallel to the adjacent first inclined planes or the second inclined planes, so that the third structural member and the first structural member and the second structural member are in surface contact, thereby increasing the contact stability between the third structural member and the first structural member, and between the third structural member and the second structural member, thereby further increasing the stability of the outer needle during movement and reducing the tendency of the outer needle to be skewed during movement.
- the first structure is fixedly connected to the inner needle; the winding needle also includes a driving assembly, which is used to drive the inner needle to move axially along the inner needle to push the outer needle away from the inner needle radially along the inner needle through the first structure.
- the technical solution of this embodiment provides some specific structures for driving the movement of the first structural member, which drives the inner needle to move through the driving component, and drives the first structural member to move through the inner needle, so that the first structural member can push the outer needle to move, thereby achieving the effect of adjusting the outer diameter of the winding needle.
- an air inlet hole is opened on the outer needle; at least two outer needles can enclose an air flow space, the air flow space is connected to the air inlet hole, and the air flow space is used to be connected to the air suction device to form a negative pressure in the air flow space.
- the vacuum device can extract the air in the air flow space to the outside of the winding needle to form a negative pressure in the air flow space.
- the negative pressure in the air flow space can adsorb the electrode assembly near the air inlet hole on the outer needle to achieve the effect of fixing the electrode assembly.
- the diameter of the air inlet holes ranges from 1 mm to 2 mm, and the distance between two adjacent air inlet holes ranges from 2 mm to 4 mm.
- the outer needle includes a middle part and an end plate, so that the end can abut against the first structural member, so that the first structural member can push the outer needle to move; the air inlet hole is opened on the middle part, so that the winding needle can fix the electrode assembly near the middle part, thereby enabling the winding needle to fix the electrode assembly more stably.
- the thickness of the middle portion ranges from 5 mm to 8 mm.
- some embodiments of the present application further provide a winding device, comprising the winding needle provided by some embodiments of the first aspect.
- At least two of the first pole piece, the first diaphragm and the second pole piece are first compounded, and then the first pole piece, the first diaphragm, the second pole piece and the second diaphragm are wound on a winding mechanism.
- the compounding mechanism and the winding mechanism of the winding device can be arranged at intervals, and each can obtain a larger space.
- the winding device does not need to feed the cathode pole piece, the anode pole piece and the diaphragm to the winding mechanism separately, which solves the problem of crowded space above the winding mechanism, optimizes the layout of the winding device, and is conducive to the flexible arrangement of various components.
- the winding mechanism includes a base and at least two winding needles, the winding needles are rotatably connected to the base, and the base is used to drive different winding needles to move alternately to one side of the composite mechanism in sequence.
- a base is set and a winding needle is set on the base, so that the base can drive the winding needle to move alternately on one side of the composite mechanism in sequence, so that the winding needle can perform the finishing processing after winding the electrode assembly at other positions, so that the feeding of the electrode sheet and the diaphragm does not need to wait for the completion of the finishing processing, thereby reducing the waiting time for the feeding of the electrode sheet and the diaphragm;
- a composite mechanism is set before the winding mechanism, and the electrode sheet and the diaphragm are bonded through the composite mechanism, so that the electrode sheet and the diaphragm do not need to be compounded at the winding needle, thereby reducing the functional requirements of the winding needle, allowing the winding needle to be wound faster, and further improving production efficiency.
- the first unwinding mechanism includes: a first unwinding assembly for unwinding the first pole piece; a second unwinding assembly for unwinding the first diaphragm; a third unwinding assembly for unwinding the second pole piece; the composite mechanism includes a first composite assembly, and the first composite assembly is used to press the first pole piece, the first diaphragm, and the second pole piece to form a first composite sheet body.
- the first composite component can composite the first pole piece, the first diaphragm and the second pole piece at one time, and the composite method is simple and the composite efficiency is high.
- the winding device also includes: a first pole piece cutting assembly, arranged between the first unwinding assembly and the first composite assembly, and the first pole piece cutting assembly is used to cut the first pole piece; a second pole piece cutting assembly, arranged between the third unwinding assembly and the first composite assembly, and the second pole piece cutting assembly is used to cut the second pole piece.
- the winding equipment also includes a first pole piece cutting assembly and a second pole piece cutting assembly to cut the first pole piece and the second pole piece respectively, so that the first pole piece cutting assembly and the second pole piece cutting assembly can cut the first pole piece and the second pole piece before the first pole piece, the first diaphragm and the second pole piece are compounded, so that the length of the diaphragm can be made longer than the length of the pole piece more easily, thereby meeting the use requirements of the electrode assembly.
- the second unwinding mechanism includes a membrane unwinding assembly and a conveying roller, wherein the membrane unwinding assembly is used to unwind the second membrane, and the conveying roller is used to allow the second membrane to merge with the first composite sheet to form a superimposed sheet and convey the superimposed sheet to the winding mechanism.
- the winding device separately arranges each unwinding component and the winding mechanism, and the layout is flexible and convenient.
- the second unwinding mechanism is disposed on one side of the winding mechanism, and the second unwinding mechanism is used to transfer the second membrane to the winding needle so that the first composite sheet and the second membrane merge on the winding needle.
- the first composite sheet and the second diaphragm are directly combined and composited on the winding needle, which saves the composite structure and simplifies the structure of the winding equipment.
- the winding device further comprises a first diaphragm cutting assembly, which is disposed adjacent to the winding mechanism and is used to cut the first diaphragm and/or the second diaphragm.
- the first diaphragm cutting assembly is arranged at the winding mechanism, so that the winding equipment can cut the diaphragm before or after the electrode assembly is wound, without wasting time for separate diaphragm cutting, thereby improving the overall winding efficiency.
- the first unwinding mechanism includes: a first unwinding component for unwinding the first pole piece; a second unwinding component for unwinding the first diaphragm; the composite mechanism includes a second composite component, and the second composite component is used to press the first pole piece and the first diaphragm to form a second composite sheet body.
- the second composite component can first composite the first pole piece with the first diaphragm to facilitate the subsequent composite with the second pole piece and the second diaphragm, thereby reducing the occurrence of poor composite effect that may be caused by composite of two pole pieces and two diaphragms in one composite structure.
- the composite structure also includes a third composite component, which is used to press the second composite sheet body, the second pole sheet and the second diaphragm to form an electrode assembly.
- the third composite component is capable of compounding the second composite sheet, the second electrode sheet and the second diaphragm to obtain an electrode assembly.
- this setting can reduce the functional requirements of the winding needle, thereby facilitating the improvement of the winding speed of the winding needle and improving production efficiency; at the same time, the electrode sheet and the diaphragm can be compounded before winding to reduce the displacement of the electrode sheet and the diaphragm during the winding process.
- the winding device also includes: a third pole piece cutting assembly, arranged between the first unwinding assembly and the second composite assembly, and the third pole piece cutting assembly is used to cut the first pole piece; a fourth pole piece cutting assembly, arranged between the third unwinding assembly and the third composite assembly, and the fourth pole piece cutting assembly is used to cut the second pole piece.
- the winding equipment also includes a third electrode sheet cutting assembly and a fourth electrode sheet cutting assembly to cut the first electrode sheet and the second electrode sheet respectively, so that the third electrode sheet cutting assembly can cut the first electrode sheet before the first electrode sheet and the first diaphragm are compounded, and the fourth electrode sheet cutting assembly can cut the second electrode sheet before the second composite sheet body, the second electrode sheet and the second diaphragm are compounded, so that the length of the diaphragm can be made longer than the length of the electrode sheet to meet the use requirements of the electrode assembly.
- Fig. 3 is a schematic cross-sectional view of the A-A section in Fig. 2;
- FIG4 is a partial enlarged schematic diagram of point B in FIG3 ;
- FIG. 7 is a schematic diagram of the structure of an electrode assembly provided in some embodiments of the present application.
- FIG9 is a schematic structural diagram of a winding device provided in a second embodiment of the present application.
- FIG10 is a schematic structural diagram of a winding device provided in a third embodiment of the present application.
- Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.
- the tabs have a certain thickness, and in the process of winding the electrode assembly on the winding needle, as the number of windings of the electrode assembly increases, the circumference of the outermost layer of the electrode assembly gradually increases, while the spacing between the tabs on the electrode assembly is roughly the same, which can easily lead to misalignment between the tabs of each layer.
- the direction of the X-axis is the axial direction of the winding needle 10, which is also the axial direction of the inner needle 11;
- the radial direction of the winding needle 10 is the direction perpendicular to the axial direction of the winding needle 10, such as the directions of the Y-axis and the Z-axis are both the radial directions of the winding needle 10, which are also the radial directions of the inner needle 11;
- the circumferential direction of the inner needle 11 is the direction around the X-axis, and the circumferential direction of the inner needle 11 is also parallel to the plane where the Y-axis and the Z-axis are located.
- the outer needle 12 refers to the structure in the winding needle 10 that contacts the electrode assembly 2000; there are at least two outer needles 12, and the number of outer needles 12 can be two, or three or more, and at least two outer needles 12 are arranged around the inner needle 11 along the circumference of the inner needle 11, that is, at least two outer needles 12 can be assembled to form the side wall structure of the winding needle 10, so that the electrode assembly 2000 can be wound on the side wall structure; at least two outer needles 12 at least cover part of the inner needle 11 along the circumference of the inner needle 11, so that the electrode assembly 2000 can be wound on the side wall structure formed by the outer needles 12.
- the shape of the outer needle 12 can affect the shape of the winding needle 10; accordingly, the outer needle 12 can be an arc-shaped sheet structure, in which case the winding needle 10 can be a cylindrical structure; the outer needle 12 can also be a flat plate structure, in which case the winding needle 10 can be a prismatic structure, and the outer needle 12 can also be a shaped structure.
- the material of the outer needle 12 may include plastic, metal or other materials; the material of the outer needle 12 and the inner needle 11 may be the same or different.
- the outer needle 12 is movably arranged on the circumferential side of the inner needle 11 along the radial direction of the inner needle 11, that is, the outer needle 12 can move relative to the inner needle 11 to approach or move away from the inner needle 11 along the radial direction of the inner needle 11; the outer needle 12 can be directly slidably connected to the inner needle 11, and can also move along the radial direction of the inner needle 11 by being restricted by a guide structure.
- a guide rail, a guide shaft or other structure with guiding capability can be used to make the outer needle 12 move along other guide structures such as guide rails and guide shafts, so that the outer needle 12 moves along the radial direction of the inner needle 11.
- the first structural member 13 refers to a component in the winding needle 10 that can move relative to the inner needle 11; the first structural member 13 can be arranged on the inner needle 11 and move relative to the inner needle 11, or it can be arranged on other structures of the winding needle 10 and move relative to the inner needle 11.
- the first structural member 13 can be a rod-shaped structure, a sheet-shaped structure, or a structure of other shapes arranged on one side of the inner needle 11, and the first structural member 13 can also be a ring-shaped structure, a tubular structure, or a structure of other shapes that is sleeved on the inner needle 11; the material of the first structural member 13 may include plastic, metal or other materials.
- the first structural member 13 may abut against the edge of the outer needle 12 along the axial direction X of the inner needle 11 , or a structural member may be provided on the side of the outer needle 12 facing the inner needle 11 and the first structural member 13 may abut against the structural member.
- the inner needle 11 is provided with a slide groove extending along the axial direction X of the inner needle 11, and at least part of the first structural member 13 can be accommodated in the slide groove and slide along the slide groove; in other embodiments, the inner needle 11 can be provided with a guide shaft extending along the axial direction X of the inner diameter, and the guide shaft passes through the first structural member 13, and the first structural member 13 can slide along the guide shaft; in some other embodiments, the inner needle 11 can be directly passed through the first structural member 13, even if the first structural member 13 is sleeved on the inner needle 11, so that the first structural member 13 can slide along the axial direction X of the inner needle 11.
- the movement of the first structural member 13 in one direction can push the outer needle 12 away from the inner needle 11 to increase the outer diameter of the winding needle 10, but the movement of the first structural member 13 in another direction (for example, movement to the left along the X-axis in FIG. 3) may cause the outer needle 12 to separate from the first structural member 13. At this time, it is not easy for the first structural member 13 to drive the outer needle 12 to move. In the process of winding the electrode assembly 2000 on the winding needle 10, this situation can be used to apply the force exerted on the winding needle 10 by the electrode assembly 2000 when it is wound on the winding needle 10. The pressure reduces the outer diameter of the winding needle 10.
- the outer diameter of the winding needle 10 can be gradually reduced to reduce the misalignment of the outermost tabs of the electrode assembly 2000; when the tabs are misaligned due to other reasons during the winding process of the electrode assembly 2000, the outer diameter of the winding needle 10 can also be increased or reduced according to the situation to alleviate the misalignment of the tabs.
- the electrode assembly 2000 can apply pressure to the winding needle 10 so that the outer needle 12 can approach the inner needle 11 along the radial direction of the inner needle 11, thereby achieving the effect of reducing the outer diameter of the winding needle 10; the outer diameter of the winding needle 10 can be increased or reduced, so that the outer diameter of the winding needle 10 can be adjusted during the winding process of the electrode assembly 2000 to adapt to different situations and alleviate the misalignment of the pole ear.
- the elastic member 14 is arranged in the winding needle 10, that is, the elastic member 14 is located between at least two outer needles 12; the elastic member 14 is used to apply a force to the outer needle 12 pointing to the direction of the inner needle 11.
- the elastic member 14 can drive the outer needle 12 to move in the direction of the inner needle 11, so as to approach the inner needle 11 and abut against the first structural member 13; for example, taking Figure 3 as an example, when the first structural member 13 moves to the left, the first structural member 13 has a tendency to separate from the outer needle 12.
- the elastic member 14 can drive the outer needle 12 to move in the direction close to the inner needle 11, and can press the outer needle 12 against the first structural member 13.
- the elastic member 14 When the outer needle 12 moves away from the inner needle 11, the elastic member 14 is in a stretched state and applies a force to the outer needle 12 to move closer to the inner needle 11; when the outer needle 12 is located closest to the inner needle 11, the elastic member 14 can be in a stretched state or in a natural state without being subjected to force.
- One end of the elastic member 14 is connected to the outer needle 12, and the other end of the elastic member 14 can be connected to the inner needle 11; one end of the elastic member 14 is connected to the outer needle 12, and the other end of the elastic member 14 can also be connected to another outer needle 12.
- the outer needle 12 can be connected to each outer needle 12.
- the first structural member 13 includes a first inclined surface 131, which is inclined relative to the axis of the inner needle 11 and forms a first angle with the axis of the inner needle 11.
- the first inclined surface 131 is abutted against the outer needle 12 so that the outer needle 12 can move relative to the first structural member 13 along the first inclined surface 131.
- the first inclined surface 131 refers to an inclined surface arranged on the first structural member 13, and the first inclined surface 131 is inclined relative to the axis of the inner needle 11; the first inclined surface 131 and the axis of the inner needle 11 can form a first angle, and the first angle is the angle shown as angle a in Figures 4 and 5; the first inclined surface 131 can have multiple inclination directions, and the inclination directions of the first inclined surface 131 are different, and the movement directions required by the first structural member 13 to push the outer needle 12 away from the inner needle 11 are also different.
- one end of the first bevel 131 faces the inside of the winding needle 10, and the other end of the first bevel 131 can also be inclined in a direction toward the outside of the winding needle 10 and close to the axis of the inner needle 11.
- the first structural member 13 moves toward the outside of the winding needle 10 to push the outer needle 12 to move away from the inner needle 11; referring to Figure 5, the right end of the first bevel 131 faces the inside of the winding needle 10, and the left end of the first bevel 131 is inclined toward the lower left.
- the first structural member 13 moves to the left to push the outer needle 12 to move upward along the first bevel 131 to move away from the inner needle 11.
- the first structural member 13 includes a first inclined surface 131, and the first inclined surface 131 is abutted against the outer needle 12.
- the movement of the first structural member 13 can push the outer needle 12 to move along the first inclined surface 131 away from the inner needle 11; at the same time, under the action of the tension of the elastic member 14 or the electrode assembly 2000, the outer needle 12 can also move along the first inclined surface 131 to approach the inner needle 11 when the first structural member 13 moves in the opposite direction, so that the outer diameter of the winding needle 10 can be expanded or reduced.
- the first angle ranges from 40° to 50°; by way of example, the first angle may be 40°, 42°, 44°, 45°, 46°, 48°, 50° or other values.
- the angle range of the first angle is 40° to 50°, so that the movement of the first structural member 13 can quickly drive the outer needle 12 to move in the radial direction Y of the inner needle 11, thereby making the outer diameter adjustment of the winding needle 10 have a faster response speed.
- the friction resistance between the first inclined surface 131 and the outer needle 12 can be smaller, thereby reducing friction loss and extending the service life.
- the distance that the outer needle 12 can move radially along the inner needle 11 is limited by the angle of the first inclined surface 131, so that the first structural member 13 can adjust the change of the outer diameter of the winding needle 10 by moving a shorter distance, so that the adjustment of the outer diameter of the winding needle 10 can have a faster response speed; at the same time, it can also reduce the resistance between the first structural member 13 and the outer needle 12, thereby reducing the friction loss between the first structural member 13 and the outer needle 12 and increasing the service life of the winding needle 10.
- the length of the first slope 131 ranges from 3 mm to 5 mm; for example, the length of the first slope 131 may be 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm or other values.
- the length of the first inclined surface 131 can affect the relationship between the moving distance of the first structure 13 and the moving distance of the outer needle 12 , that is, the greater the length of the first inclined surface 131 , the greater the maximum moving distance of the outer needle 12 .
- the length of the first slope 131 is in the range of 3 mm to 5 mm, so that the first slope 131 can not only meet the requirement of adjusting the outer diameter, but also reduce the size of the first structural member 13 , thereby reducing the space requirement of the first structural member 13 .
- the length of the first bevel 131 can be 3 mm, and the angle of the first angle can be 50°.
- the first structural member 13 can move a smaller distance and push the outer needle 12 to move a larger distance, so that the movement of the first structural member 13 can drive the outer needle 12 to move in the radial direction Y of the inner needle 11 more quickly, thereby making the outer diameter adjustment of the winding needle 10 have a faster response speed.
- the technical solution of this embodiment provides some length ranges of the first inclined surface 131, so as to limit the distance that the outer needle 12 can move radially along the inner needle 11 through the length of the first inclined surface 131, thereby limiting the range of variation of the outer diameter of the winding needle 10, so as to reduce the occurrence of misalignment of the pole ears during the winding process of the electrode assembly 2000.
- the second structural member 151 refers to a structure in the winding needle 10 for cooperating with the first structural member 13 to support the outer needle 12; the second structural member 151 can be The second structural member 151 can be connected to the inner needle 11 or other structures of the winding needle 10.
- the second structural member 151 can also be an independent component.
- the second structural member 151 can be a rod-shaped structure or a block-shaped structure or a structure of other shapes.
- the material of the second structural member 151 can include plastic, metal or other materials.
- the second structural member 151 is supported against the outer needle 12. Since there are at least two outer needles 12, there can be only one second structural member 151 and it can be supported against each outer needle 12. There can also be two or more second structural members 151, so that each outer needle 12 can correspond to at least one second structural member 151. When the second structural member 151 cooperates with the first structural member 13, each outer needle 12 has at least two supported parts, so that the outer needle 12 can move relatively stably along the radial direction of the inner needle 11.
- the second structural member 151 is at least in contact with the outer needle 12 along the axial direction X of the inner needle 11, that is, the second structural member 151 can at least apply a force along the axial direction X of the inner needle 11 and directed to the outer needle 12 to the outer needle 12; when the first structural member 13 moves along the axial direction X of the inner needle 11 and pushes the outer needle 12 to move through the first inclined surface 131, the force can balance the force parallel to the axial direction X of the inner needle 11 applied by the first inclined surface 131 to the outer needle 12, and can limit the movement of the second structural member 151 in the axial direction X of the inner needle 11, so that the outer needle 12 can better move along the radial direction Y of the inner needle 11.
- the first structural member 13 and the second structural member 151 are respectively located at the two ends of the inner needle 11 along the axial direction X of the inner needle 11, so that the first structural member 13 and the second structural member 151 respectively support the opposite sides of the outer needle 12, thereby better improving the stability of the outer needle 12 during movement and reducing the occurrence of skewness and the like.
- the second inclined surface 1511 refers to the inclined surface arranged on the second structural member 151.
- the second inclined surface 1511 and the axis of the inner needle 11 can form a second angle, that is, the second inclined surface 1511 is inclined relative to the axis of the inner needle 11.
- the second angle is the angle shown as angle a in Figures 4 and 5.
- a second inclined surface 1511 is provided on the second structural member 151, and the intersection of the second inclined surface 1511 and the first inclined surface 131 is located in the middle area of the inner needle 11, so that the first inclined surface 131 and the second inclined surface 1511 are inclined in opposite directions; in the process of the first structural member 13 moving and pushing the outer needle 12 to move, this arrangement enables the outer needle 12 to always abut against the second inclined surface 1511 and move along the second inclined surface 1511, so as to support the outer needle 12 through the second inclined surface 1511, thereby improving the stability of the movement of the outer needle 12.
- the second bevel 1511 can provide a force parallel to the axial direction X of the inner needle 11 to the outer needle 12, and this force can limit the movement of the outer needle 12 in the axial direction X of the inner needle 11; at the same time, the second bevel 1511 can also provide a force parallel to the radial direction Y of the inner needle 11 to the outer needle 12, and this force can support and support the outer needle 12, thereby further reducing the occurrence of the outer needle 12 tilting during the movement and improving the stability of the outer needle 12 movement.
- one end of the first inclined surface 131 faces the inside of the winding needle 10, and the other end of the first inclined surface 131 faces the outside of the winding needle 10. It is inclined in the direction away from the axis of the inner needle 11.
- one end of the second bevel 1511 is toward the inside of the winding needle 10, and the other end of the second bevel 1511 can be inclined in the direction toward the outside of the winding needle 10 and away from the axis of the inner needle 11.
- the first structural member 13 moves toward the second structural member 151 to push the outer needle 12 to move relatively smoothly in the direction away from the inner needle 11; referring to Figures 4 and 6, the right end of the first bevel 131 is toward the inside of the winding needle 10, and the left end of the first bevel 131 is inclined to the upper left, and the left end of the second bevel 1511 is toward the inside of the winding needle 10, and the right end of the second bevel 1511 is inclined to the upper right.
- the first structural member 13 moves to the right to push the outer needle 12 to move relatively stably upward along the first bevel 131 and the second bevel 1511 to move away from the inner needle 11.
- two third structural members 1221 are provided on the outer needle 12 , and the two third structural members 1221 are provided at both ends of the outer needle 12 along the axial direction of the inner needle 11 , and the two third structural members 1221 are respectively supported by the first structural member 13 and the second structural member 151 .
- the third structural member 1221 refers to the structure on the outer needle 12 used to abut the first structural member 13; the third structural member 1221 can be fixedly connected to the outer needle 12 by welding, bonding, one-piece molding or other methods, or can be detachably connected to the outer needle 12 by screwing, clamping or other methods; the third structural member 1221 can be a rod-shaped structure, or a block structure or a structure of other shapes; the material of the third structural member 1221 can include plastic, metal or other materials.
- the two third structural members 1221 are arranged at the two ends of the outer needle 12 along the axial direction X of the inner needle 11.
- the two third structural members 1221 can be arranged at the two ends of the outer needle 12 along the axial direction X of the inner needle 11, and the two third structural members 1221 can also be arranged on the side of the two ends of the outer needle 12 facing the inner needle 11; by way of example, the third structural member 1221 is located on the side of the outer needle 12 facing the inner needle 11, that is, the third structural member 1221 is located inside the winding needle 10, so that the side of the outer needle 12 facing the outside can be smoother, thereby reducing damage to the electrode assembly 2000 during the process of winding the electrode assembly 2000 on the winding needle 10.
- the winding needle 10 includes a first structural member 13 and a second structural member 151, and the first structural member 13 and the second structural member 151 are respectively located at the opposite ends of the inner needle 11 along its axial direction X
- the two third structural members 1221 are respectively located at the two ends of the outer needle 12 along the axial direction X of the inner needle 11, so that the two third structural members 1221 can respectively abut against the first structural member 13 and the second structural member 151.
- the outer needle 12 has two supporting parts, so that the outer needle 12 can move more stably and is not prone to skewing.
- two third structural members 1221 are arranged on the outer needle 12, and are respectively supported against the first structural member 13 and the second structural member 151, so that the first structural member 13 and the second structural member 151 can both support the outer needle 12 through the third structural member 1221, thereby increasing the stability of the outer needle 12 during movement and reducing the tendency of the outer needle 12 to be skewed during movement.
- the third inclined surface 12211 refers to an inclined surface arranged on the third structural member 1221, and the third inclined surface 12211 is parallel to the first inclined surface 131, and the third inclined surface 12211 is abutted against the first inclined surface 131, so that the first structural member 13 can push the outer needle 12 to move along the radial direction Y of the inner needle 11 through the first inclined surface 131 and the third inclined surface 12211 when the inner needle 11 moves in the axial direction X.
- first bevel 131 and the third bevel 12211 are both facing the inside of the winding needle 10, and the other ends of the first bevel 131 and the third bevel 12211 can also be inclined in a direction toward the outside of the winding needle 10 and close to the axis of the inner needle 11; referring to Figure 5, the right ends of the first bevel 131 and the third bevel 12211 are both facing the inside of the winding needle 10, and the left ends of the first bevel 131 and the third bevel 12211 are both inclined to the lower left.
- the first structural member 13 moves to the left to push the outer needle 12 to move upward along the first bevel 131 to move away from the inner needle 11.
- the third inclined surface 12211 of one of the two third structural members 1221 adjacent to the first structural member 13 is parallel to the adjacent first inclined surface 131, and the third inclined surface 12211 is abutted against the first inclined surface 131 and is in surface contact with the first inclined surface 131;
- the third inclined surface 12211 of the other of the two third structural members 1221 adjacent to the second structural member 151 is parallel to the adjacent second inclined surface 1511, and the third inclined surface 12211 is abutted against the second inclined surface 1511 and is in surface contact with the second inclined surface 1511;
- the surface contact between the third structural member 1221 and the first structural member 13 and the second structural member 151 can also reduce stress concentration at the contact part, thereby reducing damage to the first structural member 13, the second structural member 151 and the third structural member 1221 and extending the service life of the winding needle 10.
- a third inclined surface 12211 is provided on the third structural member 1221, and the two third inclined surfaces 12211 are respectively parallel to the adjacent first inclined surface 131 or the second inclined surface 1511, so that the third structural member 1221 and the first structural member 13, as well as the second structural member 151 are in surface contact, thereby increasing the contact stability between the third structural member 1221 and the first structural member 13, as well as between the third structural member 1221 and the second structural member 151, thereby further increasing the stability of the outer needle 12 during movement and reducing the tendency of the outer needle 12 to be skewed during movement.
- the driving component 16 refers to the structure in the winding needle 10 for driving the inner needle 11 to move.
- the driving component 16 may include a cylinder, an electric telescopic cylinder or other linear feed structure, or may include a gear rack structure with a motor, a crank slider structure with a motor or other structures.
- the driving assembly 16 can be arranged inside the winding needle 10 or outside the winding needle 10 ; for example, the driving assembly 16 is arranged on one side outside the winding needle 10 along the axial direction of the inner needle 11 .
- the inner needle 11 is driven to move by the driving assembly 16
- the first structural member 13 is driven to move by the inner needle 11 , so that the first structural member 13 can push the outer needle 12 to move, thereby achieving the effect of adjusting the outer diameter of the winding needle 10 .
- an air inlet hole 1211 is opened on the outer needle 12; at least two outer needles 12 can enclose an air flow space 102, the air flow space 102 is connected to the air inlet hole 1211, and the air flow space 102 is used to be connected to the air suction device to form a negative pressure in the air flow space 102.
- the air extraction device may be disposed in the air flow space 102 , or may be disposed outside the winding needle 10 ; for example, the air extraction device is disposed outside the winding needle 10 .
- the exhaust device can extract the gas in the airflow space 102 to the outside of the winding needle 10 and form a negative pressure in the airflow space 102; when the electrode assembly 2000 does not cover the winding needle 10, the exhaust device can extract the gas outside the winding needle 10 from the air inlet hole 1211 into the airflow space 102, and extract the gas in the airflow space 102 to the outside of the winding needle 10; when the electrode assembly 2000 covers at least a portion of the winding needle 10, the negative pressure formed by the exhaust device can adsorb the portion of the electrode assembly 2000 that is in contact with the winding needle 10 onto the outer needle 12, thereby fixing the corresponding portion of the electrode assembly 2000.
- the radial movement Y of the outer needle 12 along the inner needle 11 may cause gaps between adjacent outer needles 12, but because the outer diameter requirement of the winding needle 10 is small, the moving distance of the outer needle 12 is also small, and the gaps between adjacent outer needles 12 are also small.
- the winding needle 10 can still better adsorb the electrode assembly 2000 on the winding needle 10; at the same time, because the electrode assembly 2000 is wound, the electrode assembly 2000 can cover most of the gaps between adjacent outer needles 12, thereby further reducing the damage caused by negative pressure.
- the aperture of the air inlet hole 1211 ranges from 1 mm (millimeter) to 2 mm; for example, the aperture of the air inlet hole 1211 can be 1 mm, 1.2 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.8 mm, 2 mm or other values.
- the aperture of the air inlet hole 1211 is the diameter of the air inlet hole 1211. Referring to Figure 3, the dimension shown by R in the figure is the aperture of the air inlet hole 1211.
- the aperture of the air inlet hole 1211 is in the range of 1mm to 2mm, so that the negative pressure in the air flow space 102 can both adsorb the electrode assembly 2000 near the air inlet hole 1211 and is not easy to cause partial deformation of the electrode assembly 2000 or the diaphragm and enter the air inlet hole 1211, thereby reducing damage to the electrode assembly 2000.
- the distance between two adjacent air inlet holes 1211 is set as the distance between the centers of the two adjacent air inlet holes 1211. Referring to FIG. 3 , the dimension W shown in the figure is the distance between two adjacent air inlet holes 1211. Since the strength of the adsorption force of the negative pressure in the air flow space 102 on the electrode assembly 2000 is related to the total area of each air inlet hole 1211, the distance between two adjacent air inlet holes 1211 is within the range of 2 mm to 4 mm.
- the aperture of the air inlet hole 1211 can be 1 mm, and the spacing between two adjacent air inlet holes 1211 can be 2 mm.
- the aperture of the air inlet hole 1211 is smaller, and the adsorption force of a single air inlet hole 1211 on the electrode assembly 2000 is smaller, so that the electrode assembly 2000 is less likely to deform.
- the number of air inlet holes 1211 is large enough to adsorb the electrode assembly 2000 on the outer needle 12.
- the aperture of the air inlet hole 1211 can be 2 mm, and the distance between two adjacent air inlet holes 1211 can be 4 mm. In this case, the aperture of the air inlet hole 1211 is larger, and the position of a single air inlet hole 1211 has a greater adsorption force on the electrode assembly 2000, thereby being able to better adsorb the electrode assembly 2000.
- This embodiment provides some aperture ranges and spacing ranges of the air inlet holes 1211, so that the air inlet holes 1211 can both more stably adsorb the electrode assembly 2000 and reduce the deformation of the electrode assembly 2000 caused by the electrode assembly 2000 or the diaphragm entering the air inlet holes 1211.
- the negative pressure ranges from -50 KPa (kilopascals) to -75 KPa; illustratively, the negative pressure ranges from -50 KPa, -55 KPa, -60 KPa, -65 KPa, -70 KPa, -75 KPa or other values.
- the negative pressure range is set to -50KPa to -75KPa, so that the winding needle 10 can not only adsorb the electrode assembly 2000 more stably, but also reduce the deformation of the electrode assembly 2000 caused by the electrode assembly 2000 or the diaphragm entering the air inlet 1211.
- the negative pressure value in the airflow space 102 may be -50 KPa.
- the winding needle 10 can not only better reduce the deformation of the electrode assembly 2000, but also stably adsorb the electrode assembly 2000.
- the negative pressure value in the airflow space 102 may be -62.5 KPa.
- the winding needle 10 can not only effectively reduce the deformation of the electrode assembly 2000, but also stably adsorb the electrode assembly 2000.
- This embodiment provides some negative pressure ranges in the airflow space 102 so that the winding needle 10 can both absorb the electrode assembly 2000 more stably and reduce the deformation of the electrode assembly 2000 caused by the electrode assembly 2000 or the diaphragm entering the air inlet 1211.
- an airflow channel 101 connected to the airflow space 102 is opened on the inner needle 11 , and one end of the airflow channel 101 is used to be connected to a vacuum device to extract the gas in the airflow space 102 to the outside of the winding needle 10 through the airflow channel 101 .
- the airflow channel 101 refers to a channel structure opened inside the inner needle 11; the airflow channel 101 can be formed by a tube embedded in the inner needle 11.
- the airflow channel 101 may be a linear structure or a curved structure; along the radial direction of the airflow channel 101, the cross-sectional shape of the airflow channel 101 may be a square, a circle or other shapes.
- the airflow channel 101 is connected with the airflow space 102, and one end of the airflow channel 101 is connected with the vacuum device, so that the vacuum device can draw the gas in the airflow space 102 into the airflow channel 101, and draw the gas in the airflow channel 101 out of the winding needle 10; the end of the airflow channel 101 away from the vacuum device can be directly connected with the airflow space 102, or one or more through holes can be opened on the side wall of the inner needle 11 facing the outer needle 12, so that the airflow channel 101 is connected with the airflow space 102 through the through holes.
- an air flow channel 101 is opened in the inner needle 11, so that the vacuum device can extract the gas in the air flow space 102 through the air flow channel 101 and form a negative pressure, thereby facilitating the vacuum device to extract the gas from the air flow space 102; because the overall size of the winding needle 10 is usually small, this arrangement can also reduce the occupation of the internal space of the winding needle 10 by the air flow channel 101, thereby reducing the difficulty of arranging various structures inside the winding needle 10 and saving space.
- the outer needle 12 includes a middle portion 121, and the middle portion 121 is connected to end portions 122 at both ends along the axial direction of the inner needle 11, and the end portions 122 are abutted against the first structural member 13; the air inlet hole 1211 is at least opened on the middle portion 121, and the air flow space 102 is at least formed between the middle portions 121 of different outer needles 12.
- the middle portion 121 and the end portion 122 are partial structures of the outer needle 12 respectively, and the end portion 122 is disposed at both ends of the middle portion 121 along the axial direction X of the inner needle 11 .
- the middle portion 121 may be an arc-shaped sheet structure, a flat sheet structure or a structure of other shapes; the material of the middle portion 121 may include metal, plastic or other materials.
- the end portion 122 can be detachably connected to the middle portion 121 by means of screw connection, snap connection, etc., or can be fixedly connected to the middle portion 121 by means of welding, bonding, integral molding, etc.; the material of the end portion 122 may include metal, plastic or other materials, and the material of the end portion 122 may be the same as the material of the middle portion 121, or may be different from the material of the middle portion 121.
- the air inlet hole 1211 is at least opened on the middle part 121, that is, the air inlet hole 1211 can be opened only on the middle part 121, or the air inlet hole 121 can be opened on both the middle part 121 and the end part 122;
- the air flow space 102 is at least formed between the middle parts 121 of different outer needles 12, that is, the air flow space 102 can be formed only between the middle parts 121 of different outer needles 12, or it can be formed between the middle parts 121 and the end parts 122 of different outer needles 12.
- the outer needle 12 includes a middle part 121 and an end plate, so that the end 122 can abut against the first structural member 13, so that the first structural member 13 can push the outer needle 12 to move; the air inlet hole 1211 is opened on the middle part 121, so that the winding needle 10 can fix the electrode assembly 2000 near the middle part 121, so that the winding needle 10 can fix the electrode assembly 2000 more stably.
- the thickness of the middle portion 121 is the dimension of the middle portion 121 in the radial direction Y of the inner needle 11; because the middle portion 121 is mainly used to provide support for the electrode assembly 2000 during the winding process of the electrode assembly 2000, the thickness of the middle portion 121 is within the range of 5 mm to 8 mm, so that the middle portion 121 can have strong strength and reduce the space occupied so that the airflow can be smoothly drawn from the airflow space 102 to the outside of the winding needle 10, and at the same time, the weight of the outer needle 12 can be reduced.
- the thickness of the middle portion 121 can be 5 mm. In this case, the thickness of the middle portion 121 is thinner, the overall thickness of the winding needle 10 is lighter, and the airflow space 102 is larger, so that the negative pressure formed by the vacuum device can better adsorb the electrode assembly 2000 at each air inlet 1211.
- the thickness of the middle portion 121 may be 6.5 mm. In this case, the thickness of the middle portion 121 increases, and the strength of the winding needle 10 increases.
- the middle portion 121 has both strong strength and can better adsorb the electrode assembly 2000 .
- the thickness of the middle portion 121 may be 8 mm.
- the thickness of the middle portion 121 is relatively thick, and the strength of the winding needle 10 is relatively strong, so as to provide better support for the electrode assembly 2000 wound on the winding needle 10 .
- a material discharge groove 123 is further provided on the circumferential side surface of the outer needle 12 ; in the axial direction of the inner needle 11 , at least one end of the material discharge groove 123 is connected to the space outside the winding needle 10 .
- the outer needle 12 includes a middle portion 121 and end portions 122 arranged at both ends of the middle portion 121 along the axial direction X of the inner needle 11; a third structural member 1221 is provided on the end portions 122, and a third inclined surface 12211 is provided on the third structural member 1221; a plurality of air inlet holes 1211 arranged in a uniform array are provided on the middle portion 121, and the air inlet holes 1211 are connected to the airflow space 102.
- the winding mechanism 400 refers to a mechanism in the winding device 1000 for winding the pole piece and the diaphragm.
- the winding mechanism 400 is located downstream of the composite mechanism 300, and the downstream refers to the area through which the composite sheet passes after being output from the composite mechanism 300.
- the winding mechanism 400 is spaced apart from the composite mechanism 300.
- the winding mechanism 400 and the composite mechanism 300 are spaced apart in the horizontal direction, so that the winding mechanism 400 and the composite mechanism 300 can each obtain a larger layout space, which is convenient for arranging various components.
- the winding mechanism 400 may include a winding needle 10 for winding the first pole piece 91, the first diaphragm 92, the second pole piece 93 and the second diaphragm 94.
- the winding mechanism 400 may also include a holding component, a gluing component, a blanking component, etc. for finishing processing.
- the winding device 1000 further includes a frame, which is used to provide an installation environment for the composite mechanism 300, the second unwinding mechanism 200, and the winding mechanism 400;
- the frame can be a rectangular box structure, or other structures; the material of the frame can include metal, plastic or other materials.
- the frame can include a vertical plate, and the composite mechanism 300, the second unwinding mechanism 200, and the winding mechanism 400 can be installed on the vertical plate.
- the first electrode piece 91, the first diaphragm 92 and the second electrode piece 93 are firstly compounded, and then the first electrode piece 91, the first diaphragm 92, the second electrode piece 93 and the second diaphragm 94 are wound on the winding mechanism 400.
- the compounding mechanism 300 and the winding mechanism 400 of the winding device 1000 can be arranged at intervals, and each can obtain a larger space.
- the winding device 1000 does not need to place the cathode electrode piece, the anode electrode piece and the cathode electrode piece on the same side.
- the pole pieces and the diaphragm are fed separately to the winding mechanism 400, which solves the problem of crowded space above the winding mechanism 400, optimizes the layout of the winding device 1000, and facilitates the flexible arrangement of various components.
- the base 50 refers to a structure in the winding mechanism 400 that provides a fixed foundation for the winding needle 10 or other structures.
- the shape of the base 50 can be circular, square or other shapes; the material of the base 50 can include metal, plastic or other shapes.
- the base 50 can drive the winding needle 10 to move, and drive different winding needles 10 to move alternately on one side of the composite structure 300, so that when one winding needle 10 is located on one side of the composite structure 300, the other winding needle 10 can be located at other positions for easy finishing.
- This arrangement enables the finishing of the wound electrode assembly 2000 to be carried out at other positions different from the composite structure 300 without occupying the space on one side of the composite structure 300, thereby freeing up the space on the other side of the composite structure 300 so that another vacant winding needle 10 can move to one side of the composite structure 300 and wind the first pole piece 91, the first diaphragm 92, the second pole piece 93 and the second diaphragm 94.
- Bundle and unload that is, the winding needle 10 at other positions is idle at this time; then the base 50 is moved to move the idle winding needle 10 to the side of the composite mechanism 300 and wind the first pole piece 91, the first diaphragm 92, the second pole piece 93 and the second diaphragm 94, and the winding needle 10 that has finished winding is moved to other positions for finishing processing; that is, the winding needle 10 is present most of the time beside the composite mechanism 300, and the winding needle 10 does not exist only when the winding needle 10 moves alternately, and the first unwinding mechanism 100 and the second unwinding mechanism 200 only need to wait for a short time for the winding needle 10 to move alternately.
- the idle winding needle 10 can move to one side of the composite structure 300 and receive the first pole piece 91, the first diaphragm 92, the second pole piece 93 and the second diaphragm 94.
- the first unwinding assembly 21, the second unwinding assembly 22 and the third unwinding assembly 23 may each include one or more rollers; when the winding device 1000 is in an initial state, the first pole piece 91 is wound on the first unwinding assembly 21, the first diaphragm 92 is wound on the second unwinding assembly 22, and the second pole piece 93 is wound on the third unwinding assembly 23; when the winding device 1000 is in a working state, the first unwinding assembly 21 is used to unwind the first pole piece 91, the second unwinding assembly 22 is used to unwind the first diaphragm 92, the third unwinding assembly 23 is used to unwind the second pole piece 93, and the first composite assembly 41 is used to receive the first pole piece 91, the first diaphragm 92 and the second pole piece 93, and to unwind the first pole piece 91, the first diaphragm 92 and the second pole piece 93.
- the first composite component 41 may include two composite rollers arranged opposite to each other, and the first pole piece 91, the first diaphragm 92, and the second pole piece 93 are conveyed between the two composite rollers, and the two composite rollers cooperate with each other to apply a certain pressure to the first pole piece 91, the first diaphragm 92, and the second pole piece 93 to composite the first pole piece 91, the first diaphragm 92, and the second pole piece 93, wherein the first diaphragm 92 is located between the first pole piece 91 and the second pole piece 93, and is used to isolate the first pole piece 91 from the second pole piece 93; the first pole piece 91 and the second pole piece 93 are fixed together by the adhesive on the first diaphragm 92 to obtain a first composite sheet body.
- the first composite component 41 may further include a plurality of conveying rollers.
- one or more conveying rollers are provided between the first unwinding component 21 and the composite roller to convey the first pole piece 91 on the first unwinding component 21 to the composite roller;
- one or more conveying rollers are provided between the second unwinding component 22 and the composite roller to convey the first diaphragm 92 on the second unwinding component 22 to the composite roller;
- one or more conveying rollers are provided between the third unwinding component 23 and the composite roller to convey the second pole piece 93 on the third unwinding component 23 to the composite roller.
- the second unwinding assembly 22 can be located between the first unwinding assembly 21 and the third unwinding assembly 23, so that the spatial layout of the first composite assembly 41 is more reasonable. It can be understood that each unwinding assembly and the first composite assembly 41 can be flexibly arranged, not limited to the above arrangement.
- the first composite component 41 can composite the first pole piece 91, the first diaphragm 92 and the second pole piece 93 at one time, and the composite method is simple and the composite efficiency is high.
- the winding device 1000 also includes a first electrode piece cutting assembly 61 and a second electrode piece cutting assembly 62 to cut the first electrode piece 91 and the second electrode piece 93 respectively, so that the first electrode piece cutting assembly 61 and the second electrode piece cutting assembly 62 can cut the first electrode piece 91 and the second electrode piece 93 before the first electrode piece 91, the first diaphragm 92 and the second electrode piece 93 are compounded, so that the length of the diaphragm can be made longer than the length of the electrode piece more easily, thereby meeting the use requirements of the electrode assembly 2000.
- the second unwinding mechanism 200 is disposed between the first composite component 41 and the winding mechanism 400 , that is, the second unwinding mechanism 200 is located downstream of the first composite component 41 and upstream of the winding mechanism 400 .
- the second unwinding mechanism 200 is disposed downstream of the first composite component 41 , so that the second unwinding mechanism 200 can not only unwind the second membrane 94 , but also transfer the second membrane 94 together with the first composite sheet to the winding mechanism 400 .
- the second unwinding mechanism 200 includes a membrane unwinding assembly 31 and a conveying roller 32 .
- the membrane unwinding assembly 31 is used to unwind the second membrane 94 .
- the conveying roller 32 is used to allow the second membrane 94 to merge with the first composite sheet to form a superimposed sheet and convey the superimposed sheet to the winding mechanism 400 .
- the second unwinding mechanism 200 includes a diaphragm unwinding assembly 31 and a conveying roller 32, and the conveying roller 32 is used for allowing the first composite sheet and the second diaphragm 94 to merge, so that the first composite sheet and the second diaphragm 94 can be stacked and formed into a superimposed sheet, and then the superimposed sheet is conveyed to the winding mechanism 400 for winding.
- the winding device 1000 may also include a membrane composite assembly (not shown in the figure), which is arranged between the conveying roller 32 and the winding mechanism 400, and is used to composite the second membrane 94 with the first composite sheet.
- the membrane composite assembly may be located upstream or downstream of the conveying roller 32.
- the membrane composite assembly may include two composite rollers arranged opposite to each other, and the two composite rollers apply pressure to the second membrane 94 and the first composite sheet to composite the second membrane 94 with the first composite sheet, so that the second membrane 94 and the first composite sheet can be pre-combined before entering the winding mechanism 400, and are not easily displaced from each other.
- the diaphragm composite assembly may also be omitted, that is, there is no need to composite the second diaphragm 94 with the first composite sheet before winding; in this case, the second diaphragm 94 and the first composite sheet may be composited at the winding needle 10 .
- the winding device 1000 further includes a first diaphragm cutting assembly 71 , which is disposed adjacent to the winding mechanism 400 and is used to cut the first diaphragm 92 and/or the second diaphragm 94 .
- the first diaphragm cutting assembly 71 is required to cut the first diaphragm 92 and the second diaphragm 94 .
- the number of the first diaphragm cutting assembly 71 can be one, in which case the first diaphragm cutting assembly 71 simultaneously cuts off the first diaphragm 92 and the second diaphragm 94 ; the number of the first diaphragm cutting assembly 71 can also be at least two, in which case one first diaphragm cutting assembly 71 is used to cut off the first diaphragm 92 , and the other first diaphragm cutting assembly 71 is used to cut off the second diaphragm 94 .
- the first diaphragm cutting assembly 71 may include a variety of cutting structures, such as a linear cutter that reciprocates along a straight line, a cam cutter that rotates around an axis, a laser cutting structure, and the like.
- the first diaphragm cutting assembly 71 is disposed at the winding mechanism 400, so that the winding device 1000 can cut the diaphragm before or after the electrode assembly 2000 is wound, without wasting time for separate diaphragm cutting, thereby improving the overall winding efficiency.
- the first unwinding assembly 21, the second unwinding assembly 22 and the third unwinding assembly 23 respectively unwind the first pole piece 91, the first diaphragm 92 and the second pole piece 93, and make the first pole piece 91, the first diaphragm 92 and the second pole piece 93 be pressed together at the first composite assembly 41 to form a first composite sheet body.
- the first diaphragm cutting assembly 71 is used to cut the first diaphragm 92 and the second diaphragm 94 when the base 50 drives the winding needle 10 to move toward the finishing structure, so that the finishing structure can perform finishing processing on the wound electrode assembly 2000.
- the second embodiment of the present application proposes a winding device 1000 , including a first unwinding mechanism 100 , a second unwinding mechanism 200 , a compounding mechanism 300 and a winding mechanism 400 ; different from the first embodiment, the first diaphragm cutting assembly 71 is located upstream of the winding mechanism 400 .
- the winding device 1000 may also include a conveyor disposed between the first diaphragm cutting assembly 71 and the winding mechanism 400, and the conveyor is used to transfer the first diaphragm 92 and/or the second diaphragm 94 to the winding mechanism 400; the conveyor may also be used to convey the first pole piece 91 and the second pole piece 93, that is, the conveyor is used to convey the superimposed sheet from the first diaphragm cutting assembly 71 to the winding needle 10, and the conveyor may include a variety of conveying structures, such as a clamp, a conveyor belt, a vacuum adsorption transmission belt, etc. The conveyor may also convey the composite sheet or the second diaphragm 94, and is not limited to conveying the superimposed sheet.
- the conveying member may also be omitted.
- the first diaphragm cutting assembly 71 is adjacent to the winding mechanism 400 , and the cut electrode assembly 2000 can be directly fixed and wound by the winding needle 10 .
- the first diaphragm cutting assembly 71 is located upstream of the winding mechanism 400.
- the first diaphragm cutting assembly 71 can cut the first diaphragm 92 and the second diaphragm 94 before the overlapping sheets are rolled up.
- the first diaphragm cutting assembly 71 may include a variety of cutting structures, such as a linear cutter that reciprocates along a straight line, a cam cutter that rotates around an axis, a laser cutting structure, etc.
- the first diaphragm cutting assembly 71 cuts the first diaphragm 92 and the second diaphragm 94 , and the conveyor conveys the head end of the next electrode assembly 2000 to the empty winding needle 10 , so that the winding needle 10 can wind the next electrode assembly 2000 .
- the third embodiment of the present application provides a winding device 1000, including a first unwinding mechanism 100, a second unwinding mechanism 200, a composite mechanism 300 and a winding mechanism 400; different from the first embodiment, the second unwinding mechanism 200 is arranged on one side of the winding mechanism 400, and the second unwinding mechanism 200 is used to transfer the second diaphragm 94 to the winding needle 10. At this time, the first composite sheet and the second diaphragm 94 converge on the winding needle 10.
- the second unwinding mechanism 200 directly delivers the second separator 94 to the winding mechanism 400 , so that the first composite sheet delivered by the first composite assembly 41 and the second separator 94 delivered by the second unwinding mechanism 200 are rolled together and combined at the winding needle 10 to form an electrode assembly 2000 .
- the first diaphragm cutting assembly 71 is located on one side of the base 50; after the first composite sheet and the second diaphragm 94 are wound on the winding needle 10, the base 50 drives the winding needle 10 to move toward the finishing structure. At this time, the first diaphragm cutting assembly 71 can cut off the first diaphragm 92 and the second diaphragm 94, so that the finishing structure can perform finishing processing on the wound electrode assembly 2000.
- the fourth embodiment of the present application proposes a winding device 1000, including a first unwinding mechanism 100, a second unwinding mechanism 200, a composite mechanism 300 and a winding mechanism 400; the second unwinding mechanism 200 is arranged on one side of the winding mechanism 400, and the second unwinding mechanism 200 is used to transfer the second diaphragm 94 to the winding needle 10, so that the first composite sheet and the second diaphragm 94 converge on the winding needle 10; different from the third embodiment, the first diaphragm cutting assembly 71 in the winding device 1000 is different.
- the first diaphragm cutting assembly 71 is arranged upstream of the winding mechanism 400, and two first diaphragm cutting assemblies 71 are provided.
- One first diaphragm cutting assembly 71 is arranged between the first composite assembly 41 and the winding mechanism 400 and is used to cut the first diaphragm 92
- the other first diaphragm cutting assembly 71 is arranged between the second unwinding mechanism 200 and the winding mechanism 400 and is used to cut the second diaphragm 94.
- the fifth embodiment of the present application proposes a winding device 1000, wherein the first unwinding mechanism 100 includes a first unwinding component 21 and a second unwinding component 22, the first unwinding component 21 is used to unwind the first pole piece 91, and the second unwinding component 22 is used to unwind the first diaphragm 92; the composite mechanism 300 includes a second composite component 42, and the second composite component 42 is used to press the first pole piece 91 and the first diaphragm 92 to form a second composite sheet body; different from the first to fourth embodiments, in this fifth embodiment, the second composite component 42 of the composite mechanism 300 is only used to composite the first pole piece 91 and the first diaphragm 92.
- the second composite component 42 can first composite the first pole piece 91 with the first diaphragm 92 to facilitate subsequent composite with the second pole piece 93 and the second diaphragm 94, thereby reducing the possibility of poor composite effect caused by composite of two pole pieces and two diaphragms in one composite structure.
- the first unwinding mechanism 100 also includes a third unwinding assembly 23 for unwinding the second pole piece 93; the composite mechanism 300 also includes a third composite assembly 43, and the third composite assembly 43 is used to press the second composite sheet, the second pole piece 93 and the second diaphragm 94 to form an electrode assembly 2000.
- the second composite sheet, the second electrode sheet 93 and the second diaphragm 94 are stacked in sequence, and the second composite sheet includes the stacked first electrode sheet 91 and the first diaphragm 92, that is, in the electrode assembly 2000, the first electrode sheet 91, the first diaphragm 92, the second electrode sheet 93 and the second diaphragm 94 are stacked in sequence; both sides of the first diaphragm 92 and the second diaphragm 94 are adhesive, so that the first electrode sheet 91, the first diaphragm 92, the second electrode sheet 93 and the second diaphragm 94 are adhesive.
- the relative positions of the pole piece 93 and the second diaphragm 94 are fixed and are not easily moved relative to each other.
- the third composite component 43 is capable of composite the second composite sheet, the second electrode sheet 93 and the second diaphragm 94 to obtain the electrode assembly 2000.
- this arrangement can reduce the functional requirements of the winding needle 10, thereby facilitating the improvement of the winding speed of the winding needle 10 and improving production efficiency; at the same time, the composite of the electrode sheet and the diaphragm can be completed before winding to reduce the displacement of the electrode sheet and the diaphragm during the winding process.
- the winding device 1000 also includes a third electrode sheet cutting assembly 81 and a fourth electrode sheet cutting assembly 82 to cut off the first electrode sheet 91 and the second electrode sheet 93 respectively, so that the third electrode sheet cutting assembly 81 can cut off the first electrode sheet 91 before the first electrode sheet 91 and the first diaphragm 92 are combined, and the fourth electrode sheet cutting assembly 82 can cut off the second electrode sheet 93 before the electrode assembly 2000, the second electrode sheet 93 and the second diaphragm 94 are combined, so that it is easier to make the length of the diaphragm greater than the length of the electrode sheet, thereby meeting the use requirements of the electrode assembly 2000.
- the second diaphragm cutting assembly 72 may include a variety of cutting structures, such as a linear cutter that reciprocates along a straight line, a cam cutter that rotates around an axis, a laser cutting structure, and the like.
- the second diaphragm cutting assembly 72 is arranged between the third composite assembly 43 and the winding mechanism 400. After the second composite sheet is composited with the second electrode sheet 93 and the second diaphragm 94, the second diaphragm cutting assembly 72 can simultaneously cut the first diaphragm 92 and the second diaphragm 94, so as to facilitate the winding needle 10 to wind the electrode assembly 2000 and facilitate the finishing processing at the finishing structure.
- the second diaphragm cutting assembly 72 is arranged between the third composite assembly 43 and the winding mechanism 400, so that the second diaphragm cutting assembly 72 cuts the diaphragm after the electrode assembly 2000, the second electrode sheet 93 and the second diaphragm 94 are composited.
- This arrangement can easily make the length of the diaphragm greater than the length of the electrode sheet, thereby meeting the use requirements of the electrode assembly 2000.
- the winding device 1000 provided in the first embodiment of the present application includes a first unwinding mechanism 100, a second unwinding mechanism 200, a compounding mechanism 300 and a winding mechanism 400;
- the first unwinding mechanism 100 includes a first unwinding component 21, a second unwinding component 22, and a third unwinding component 23;
- the compounding mechanism 300 includes a first compounding component 41;
- the winding mechanism 400 includes a base 50 and at least two winding needles 10 arranged on the base 50;
- the second unwinding mechanism 200 is used to convey the second diaphragm 94 and make the second diaphragm 94 converge with the first composite sheet on the winding needle 10.
- the winding device 1000 also includes a first diaphragm cutting assembly 71, which is located on one side of the base 50; after the first composite sheet and the second diaphragm 94 are wound on the winding needle 10, the base 50 drives the winding needle 10 to move toward the finishing structure. At this time, the first diaphragm cutting assembly 71 can cut the first diaphragm 92 and the second diaphragm 94, so that the finishing structure can perform finishing processing on the wound electrode assembly 2000.
- the working principle of the winding device 1000 is as follows:
- the first pole piece 91, the second pole piece 93 and the first diaphragm 92 are unwound, and the first pole piece 91 and the second pole piece 93 wrap the first diaphragm 92 in the middle and are compounded together through the first composite component 41 to form a first composite sheet body; then, the first composite sheet body and the second diaphragm 94 are merged to form a stacked sheet body.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
Abstract
本申请公开了一种卷针(10)、卷绕设备(1000)及电池加工系统,卷针包括:内针(11);至少两个外针(12),沿内针的周向环绕内针,外针沿内针的径向可活动地设于内针周侧;第一结构件(13),抵持于外针,第一结构件能够沿内针的轴向相对外针运动,以推动外针沿内针的径向远离内针;本申请提供的卷针通过第一结构件推动外针沿内针的径向远离内针,从而达到扩大卷针外径的效果;同时,也能够使第一结构件脱离外针,此时电极组件能够向卷针施加压力以使得外针能够沿内针的径向靠近内针,从而达到缩小卷针外径的效果;使卷针的外径能够增大或缩小,以使得卷针能够在电极组件卷绕的过程中调节外径,从而减少极耳错位的情况出现。
Description
本申请要求于2024年5月7日提交中国专利局,申请号为202420969109.5,发明名称为“卷针及卷绕设备”的中国专利申请的优先权,其内容通过引用结合在本申请中。
本申请要求于2024年1月11日提交中国专利局,申请号为202410043912.0,发明名称为“卷绕设备及电池制造设备”的中国专利申请的优先权,其内容通过引用结合在本申请中。
本申请要求于2024年1月11日提交中国专利局,申请号为202420072183.7,发明名称为“卷绕设备”的中国专利申请的优先权,其内容通过引用结合在本申请中。
本申请涉及电池加工领域,特别涉及一种卷针、卷绕设备及电池加工系统。
节能减排是汽车产业可持续发展的关键,电动车辆由于其节能环保的优势成为汽车产业可持续发展的重要组成部分。对于电动车辆而言,电池技术又是关乎其发展的一项重要因素。
在电池加工的过程中,电极组件的卷绕是十分重要的工序,而电极组件通常需要经过卷针进行卷绕。目前的卷针在卷绕过程中易出现极耳错位的情况,从而导致电极组件的良率较低。
发明内容
鉴于上述问题,本申请提供卷针、卷绕设备及电池加工系统,能够缓解电极组件卷绕过程中极耳错位导致良率较低的问题。
第一方面,本申请实施例提供了一种卷针,包括:
内针;
至少两个外针,沿内针的周向环绕内针,外针沿内针的径向可活动地设于内针周侧;
第一结构件,抵持于外针,第一结构件能够沿内针的轴向相对外针运动,以推动外针沿内针的径向远离内针。
本实施例的技术方案中,设置环绕内针并能够沿内针的径向活动的外针,并设置抵持于外针的第一结构件,以通过第一结构件推动外针沿内针的径向远离内针,从而达到扩大卷针外径的效果;同时,也能够使第一结构件脱离外针,此时在电极组件卷绕过程中的张力的作用下,电极组件能够向卷针施加压力以使得外针能够沿内针的径向靠近内针,从而达到缩小卷针外径的效果;使卷针的外径能够增大或缩小,以使得卷针能够在电极组件卷绕的过程中调节外径,从而减少极耳错位的情况出现。
在一些实施例中,卷针还包括设于卷针内的弹性件,弹性件的一端与外针相连,且弹性件的另一端能够与内针或另一外针相连,弹性件用于向外针施加指向内针方向的力。
本实施例的技术方案中,通过弹性件向外针施加指向内针方向的力,以使得弹性件能够将外针压持于第一结构件,并使得第一结构件能够配合弹性件带动外针沿内针的径向靠近或远离内针运动,从而使得卷针具有扩大外径和缩小外径的功能,进而便于更好的减少电极组件卷绕过程中极耳错位的情况出现。
在一些实施例中,第一结构件包括第一斜面,第一斜面相对内针的轴线倾斜并与内针的轴线之间形成第一夹角,第一斜面抵持于外针,以使得外针能够沿第一斜面相对第一结构件运动。
本实施例的技术方案中,使第一结构件包括第一斜面,并使第一斜面抵持于外针,此时第一结构件移动能够推动外针沿着第一斜面向远离内针的方向运动;同时在弹性件或电极组件张力的作用下,外针也能够在第一结构件反向移动时沿着第一斜面靠近内针,从而使得卷针的外径能够扩大或缩小。
在一些实施例中,第一夹角的角度范围为40°~50°。
本实施例的技术方案提供了一些第一斜面的夹角范围,以通过第一斜面的夹角限制外针能够沿内针径向运动的距离,使得第一结构件运动较短的距离即可调节卷针外径的变化,使得卷针外径的调节能够具有较快的响应速度;同时,还能够减小第一结构件与外针之间的阻力,从而减少第一结构件与外针之间的摩擦损耗,提高卷针的使用寿命。
在一些实施例中,第一斜面的长度范围为3mm~5mm。
本实施例的技术方案提供了一些第一斜面的长度范围,以通过第一斜面的长度限制外针能够沿内针径向运动的距离,从而限制了卷针外径的变化范围,以减少电极组件卷绕过程中极耳错位的情况出现。
在一些实施例中,卷针还包括第二结构件,第二结构件与第一结构件分别沿内针的轴向设于内针的相对两端,第二结构件至少沿内针的轴向抵持于外针;第一结构件能够沿内针的轴向相对第二结构件运动。
本实施例的技术方案中,将第一结构件和第二结构件设于内针的两端,并使得第一结构件和第二结构件能够分别抵持外针的两端;在第一结构件运动并推动外针沿内针径向运动的过程中,外针能够始终抵持于第二结构件,以通过第二结构件配合第一结构件共同承托外针,从而能够增加外针运动过程中的稳定性,减少外针在运动过程中出现歪斜等情况。
在一些实施例中,第二结构件包括第二斜面,第二斜面抵持于外针,第二斜面与内针的轴线之间形成第二夹角;
所述第二斜面所在的平面与所述第一斜面所在的平面相交处沿所述内针的径向的投影处于所述内针中部区域。
本实施例的技术方案中,在第二结构件上设置第二斜面,并使第二斜面与第一斜面的相交处处于内针的中部区域,以使得第一斜面和第二斜面倾斜方向相反;在第一结构件运动并推动外针移动的过程中,该设置使得外针能够始终抵接于第二斜面并沿第二斜面运动,以通过第二斜面承托外针,提高外针运动的稳定性。
在一些实施例中,第二夹角与第一夹角相等。
本实施例的技术方案中,使第二斜面与第一斜面的倾斜角度相同,以使得第一结构件运动并推动外针移动的过程中,外针能够始终抵接于第二斜面并沿第二斜面运动,以通过第二斜面承托外针,从而进一步提高外针运动的稳定性,减少外针在运动过程中出现歪斜等情况。
在一些实施例中,外针上设有两个第三结构件,两个第三结构件沿内针的轴向设于外针的两端,两个第三结构件分别抵持于第一结构件和第二结构件。
本实施例的技术方案中,在外针上设置两个第三结构件,并分别抵持于第一结构件和第二结构件,以使得第一结构件和第二结构件均能够通过第三结构件承托外针,从而能够增加外针运动过程中的稳定性,减少外针在运动过程中出现歪斜等情况。
在一些实施例中,两个第三结构件均包括第三斜面,两个第三斜面中的一个平行于相邻的第一斜面并抵持于第一斜面,两个第三斜面中的另一个平行于相邻的第二斜面并抵持于第二斜面。
本实施例的技术方案中,在第三结构件上设置第三斜面,并使两个第三斜面分别平行于相邻的第一斜面或第二斜面,以使第三结构件和第一结构件、第二结构件之间为面接触,从而能够增加第三结构件与第一结构件、第三结构件与第二结构件之间接触的稳定性,从而能够进一步增加外针运动过程中的稳定性,减少外针在运动过程中出现歪斜等情况。
在一些实施例中,第一结构件固定连接于内针;卷针还包括驱动组件,驱动组件用于驱动内针沿内针的轴向运动,以通过第一结构件推动外针沿内针的径向远离内针。
本实施例的技术方案提供了一些驱动第一结构件运动的具体结构,通过驱动组件带动内针运动,并通过内针带动第一结构件运动,以使得第一结构件能够推动外针运动,从而达到调节卷针外径的效果。
在一些实施例中,外针上开设有进气孔;至少两个外针能够围成气流空间,气流空间与进气孔相连通,且气流空间用于与抽气装置相连通,以在气流空间中形成负压。
本实施例的技术方案中,抽气装置能够将气流空间中的空气抽出至卷针之外,以在气流空间中形成负压,气流空间中的负压能够将进气孔附近的电极组件吸附在外针上,以达到固定电极组件的作用。
在一些实施例中,进气孔有至少两个,且至少两个进气孔均匀的排布于外针上。
本实施例的技术方案中,使进气孔有至少两个,以使得外针上能够具有至少两个吸附电极组件的位置,从而能够提高对电极组件固定的稳定性,并能够提高固定效果;使至少两个进气孔均匀排布,以使得电极组件受到的吸附力能够较为均匀,从而减少电极组件受力不均可能导致的形变等异常。
在一些实施例中,进气孔的孔径范围为1mm~2mm,相邻两个进气孔之间的距离为2mm~4mm。
本实施例的技术方案提供了一些进气孔的孔径范围和间距范围,以使得进气孔既能够较为稳定的吸附电极组件,也能够减少电极组件或隔膜进入进气孔导致电极组件变形的情况出现。
在一些实施例中,负压的范围为-50KPa~-75KPa。
本实施例的技术方案提供了一些气流空间中的负压的范围,以使得卷针以既能够较为稳定的吸附电极组件,也能够减少电极组件或隔膜进入进气孔导致电极组件变形的情况出现。
在一些实施例中,内针上开设有与气流空间相连通的气流通道,气流通道的一端用于与抽气装置相连通,以将气流空间中的气体经气流通道抽出至卷针之外。
本实施例的技术方案中,在内针中开设气流通道,以使得抽气装置能够通过气流通道将气流空间中的气体抽出并形成负压,从而便于抽气装置将气体自气流空间中抽出,同时也降低了卷针内部各个结构的排布难度,节省了空间。
在一些实施例中,外针包括中间部,中间部沿内针轴向的两端均连接有端部,端部抵持于第一结构件;进气孔至少开设于中间部上,气流空间至少形成于不同外针的中间部之间。
本实施例的技术方案中,使外针包括中间部和端板,以使得端部能够抵接于第一结构件,以便于第一结构件推动外针移动;将进气孔开设于中间部上,以便于卷针在中间部附近固定电极组件,从而使得卷针能够更稳定的固定电极组件。
在一些实施例中,中间部的厚度范围为5mm~8mm。
本实施例的技术方案提供了一些中间部的厚度范围,以使得中间部既能够具有较强的强度,还能够减少对空间的占用以使得气流能够顺利的自气流空间被抽出至卷针之外,同时还能够减轻外针的重量。
在一些实施例中,端部可拆卸地连接于中间部。
本实施例的技术方案中,端部可拆卸地连接于中间部能够便于外针的安装、更换和维修,同时,也便于卷针的整体组装。
在一些实施例中,外针的周侧面上还开设有下料槽;在内针的轴向上,下料槽的至少一端与卷针之外的空间相连通。
本实施例的技术方案中,在外针上设置下料槽,从而便于下料装置进入卷绕后的电极组件中并将电极组件从卷针上取下。
第二方面,本申请的一些实施例还提供一种卷绕设备,包括第一方面的一些实施例提供的卷针。
在一些实施例中,卷绕设备包括:第一放卷机构,用于放卷第一极片、第一隔膜和第二极片;第二放卷机构,用于放卷第二隔膜;复合机构,至少用于压合第一极片和第一隔膜;卷绕机构,设于复合机构的下游,卷绕机构用于将第一极片、第一隔膜、第二极片、第二隔膜卷绕形成电极组件。
本实施例的技术方案中,先将第一极片、第一隔膜和第二极片中的至少两者复合,再将第一极片、第一隔膜、第二极片、第二隔膜在卷绕机构上进行卷绕,该卷绕设备的复合机构和卷绕机构能够间隔设置,各自能够获得较大的空间,并且,卷绕设备无需将阴极极片、阳极极片和隔膜单独向卷绕机构供料,解决了卷绕机构上方空间拥挤的问题,优化了卷绕设备的布局,有利于灵活排布各部件。
在一些实施例中,卷绕机构包括基座以及至少两个卷针,卷针转动连接于基座上,基座用于带动不同的卷针依次交替地运动至复合机构的一侧。
本实施例的技术方案中,设置基座并将卷针设置在基座上,使基座能够带动卷针在复合机构的一侧依次交替运动,以使得卷针在卷绕电极组件之后的收尾处理能够在其他位置进行,使得极片和隔膜的供料无需等待收尾处理结束,减少了极片和隔膜的供料等待时间;在卷绕机构之前设置复合机构,并通过复合机构使极片和隔膜贴合,以使得极片和隔膜无需在卷针处复合,减少了卷针的功能需求,使得卷针能够更快的进行卷绕,进一步提高了生产效率。
在一些实施例中,第一放卷机构包括:第一放卷组件,用于放卷第一极片;第二放卷组件,用于放卷第一隔膜;第三放卷组件,用于放卷第二极片;复合机构包括第一复合组件,第一复合组件用于将第一极片、第一隔膜、第二极片压合形成第一复合片体。
本实施例的技术方案中,第一复合组件能够一次性复合第一极片、第一隔膜和第二极片,复合方式简单,复合效率较高。
在一些实施例中,卷绕设备还包括:第一极片切断组件,设置于第一放卷组件与第一复合组件之间,第一极片切断组件用于切断第一极片;第二极片切断组件,设置于第三放卷组件与第一复合组件之间,第二极片切断组件用于切断第二极片。
本实施例的技术方案中,使卷绕设备还包括第一极片切断组件和第二极片切断组件,以分别切断第一极片和第二极片,以使得第一极片切断组件和第二极片切断组件能够在第一极片、第一隔膜和第二极片复合前先切断第一极片和第二极片,从而能够较为容易的使隔膜的长度大于极片的长度,满足电极组件的使用需求。
在一些实施例中,第二放卷机构设于第一复合组件和卷绕机构之间。
本实施例的技术方案中,第二放卷机构位于第一复合组件的下游,第二放卷机构提供的第二极片能够与第一复合片体叠合并一同入卷,第二放卷机构能够与卷绕机构间隔设置,避免卷绕机构的上方空间拥挤的问题。
在一些实施例中,第二放卷机构包括隔膜放卷组件和传送辊,隔膜放卷组件用于放卷第二隔膜,传送辊用于供第二隔膜与第一复合片体汇合以形成叠合片体,并将叠合片体传送至卷绕机构。
本实施例的技术方案中,卷绕设备将各放卷组件与卷绕机构分开设置,布局灵活方便。
在一些实施例中,第二放卷机构设于卷绕机构的一侧,第二放卷机构用于将第二隔膜传送至卷针,以使第一复合片体与第二隔膜在卷针上汇合。
本实施例的技术方案中,使第一复合片体与第二隔膜直接在卷针上汇合并复合,节省了复合结构,简化了卷绕设备的结构。
在一些实施例中,卷绕设备还包括第一隔膜切断组件,第一隔膜切断组件与卷绕机构相邻设置且用于切断第一隔膜和/或第二隔膜。
本实施例的技术方案中,将第一隔膜切断组件设于卷绕机构处,以使得卷绕设备能够在电极组件入卷前或入卷后切断隔膜,无需耗费单独的隔膜切断时间,提升了整体的卷绕效率。
在一些实施例中,第一放卷机构包括:第一放卷组件,用于放卷第一极片;第二放卷组件,用于放卷第一隔膜;复合机构包括第二复合组件,第二复合组件用于将第一极片、第一隔膜压合形成第二复合片体。
本实施例的技术方案中,使第二复合组件能够先将第一极片与第一隔膜复合,以便于后续与第二极片、第二隔膜复合,从而能够减少两个极片与两个隔膜均在一个复合结构处复合可能导致的复合效果不良的情况出现。
在一些实施例中,第一放卷机构还包括第三放卷组件,用于放卷第二极片;
复合机构还包括第三复合组件,第三复合组件用于将第二复合片体、第二极片与第二隔膜压合形成电极组件。
本实施例的技术方案中,使第三复合组件能够将第二复合片体、第二极片与第二隔膜复合并得到电极组件,相较于将极片和隔膜在卷针处复合的方案,该设置能够减少卷针的功能需求,从而便于提高卷针的卷绕速度,提高生产效率;同时还能够在卷绕之前完成对极片和隔膜的复合,以减少极片和隔膜在卷绕过程中出现移位的情况。
在一些实施例中,卷绕设备还包括:第三极片切断组件,设置于第一放卷组件与第二复合组件之间,第三极片切断组件用于切断第一极片;第四极片切断组件,设置于第三放卷组件与第三复合组件之间,第四极片切断组件用于切断第二极片。
本实施例的技术方案中,使卷绕设备还包括第三极片切断组件和第四极片切断组件,以分别切断第一极片和第二极片,以使得第三极片切断组件能够在第一极片和第一隔膜复合前先切断第一极片,并使得第四极片切断组件能够在第二复合片体、第二极片与第二隔膜复合前先切断第二极片,从而能够较为容易的使隔膜的长度大于极片的长度,满足电极组件的使用需求。
在一些实施例中,卷绕设备还包括第二隔膜切断组件,第二隔膜切断组件设于第三复合组件与卷绕机构之间。
本实施例的技术方案中,将第二隔膜切断组件设于第三复合组件与卷绕机构之间,以使得第二隔膜切断组件在电极组件、第二极片与第二隔膜复合之后切断隔膜,该设置能够较为容易的使隔膜的长度大于极片的长度,从而满足电极组件的使用需求。
第三方面,本申请一些实施例还提供一种电池加工系统,包括第二方面的一些实施例提供的卷绕设备。
上述说明仅是本申请技术方案的概述,为了能够更清楚了解本申请的技术手段,而可依照说明书的内容予以实施,并且为了让本申请的上述和其它目的、特征和优点能够更明显易懂,以下特举本申请的
通过阅读对下文优选实施方式的详细描述,各种其他的优点和益处对于本领域普通技术人员将变得清楚明了。附图仅用于示出优选实施方式的目的,而并不认为是对本申请的限制。而且在全部附图中,用相同的附图标号表示相同的部件。在附图中:
图1为本申请一些实施例提供的卷针的立体示意图;
图2为本申请一些实施例提供的卷针的主视示意图;
图3为图2中A-A处的剖视示意图;
图4为图3中B处的局部放大示意图;
图5为另一实施例中图3在B处的局部放大示意图;
图6为图3中C处的局部放大示意图;
图7为本申请一些实施例提供的电极组件的结构示意图;
图8为本申请第一实施例提供的卷绕设备的结构示意图;
图9为本申请第二实施例提供的卷绕设备的结构示意图;
图10为本申请第三实施例提供的卷绕设备的结构示意图;
图11为本申请第四实施例提供的卷绕设备的结构示意图;
图12为本申请第五实施例提供的卷绕设备的结构示意图。
图中标记的含义为:
10、卷针;
101、气流通道;102、气流空间;
11、内针;
12、外针;121、中间部;1211、进气孔;122、端部;1221、第三结构件;12211、第三斜面;123、下料槽;
13、第一结构件;131、第一斜面;
14、弹性件;
15、底座;151、第二结构件;1511、第二斜面;152、空腔;153、接口;
16、驱动组件;
1000、卷绕设备;
100、第一放卷机构;
21、第一放卷组件;22、第二放卷组件;23、第三放卷组件;
200、第二放卷机构;
31、隔膜放卷组件;32、传送辊;
300、复合机构;
41、第一复合组件;42、第二复合组件;43、第三复合组件;
400、卷绕机构;
50、基座;
61、第一极片切断组件;62、第二极片切断组件;
71、第一隔膜切断组件;72、第二隔膜切断组件;
81、第三极片切断组件;82、第四极片切断组件;
2000、电极组件;
91、第一极片;92、第一隔膜;93、第二极片;94、第二隔膜。
本发明的实施方式
下面将结合附图对本申请技术方案的实施例进行详细的描述。以下实施例仅用于更加清楚地说明本申请的技术方案,因此只作为示例,而不能以此来限制本申请的保护范围。
除非另有定义,本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同;本文中所使用的术语只是为了描述具体的实施例的目的,不是旨在于限制本申请;本申请的说明书和权利要求书及上述附图说明中的术语“包括”和“具有”以及它们的任何变形,意图在于覆盖不排他的包含。
在本申请实施例的描述中,技术术语“第一”“第二”等仅用于区别不同对象,而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量、特定顺序或主次关系。在本申请实施例的描述中,“多个”的含义是两个以上,除非另有明确具体的限定。
在本文中提及“实施例”意味着,结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例,也不是与其它实施
例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是,本文所描述的实施例可以与其它实施例相结合。
在本申请实施例的描述中,术语“和/或”仅仅是一种描述关联对象的关联关系,表示可以存在三种关系,例如A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。另外,本文中字符“/”,一般表示前后关联对象是一种“或”的关系。
在本申请实施例的描述中,术语“多个”指的是两个以上(包括两个),同理,“多组”指的是两组以上(包括两组),“多片”指的是两片以上(包括两片)。
在本申请实施例的描述中,技术术语“中心”“纵向”“横向”“长度”“宽度”“厚度”“上”“下”“前”“后”“左”“右”“竖直”“水平”“顶”“底”“内”“外”“顺时针”“逆时针”“轴向”“径向”“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本申请实施例和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本申请实施例的限制。
在本申请实施例的描述中,除非另有明确的规定和限定,技术术语“安装”“相连”“连接”“固定”等术语应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或成一体;也可以是机械连接,也可以是电连接;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言,可以根据具体情况理解上述术语在本申请实施例中的具体含义。
目前,从市场形势的发展来看,动力电池的应用越加广泛。动力电池不仅被应用于水力、火力、风力和太阳能电站等储能电源系统,而且还被广泛应用于电动自行车、电动摩托车、电动汽车等电动交通工具,以及军事装备和航空航天等多个领域。随着动力电池应用领域的不断扩大,其市场的需求量也在不断地扩增。
在电池生产过程中,电极组件的卷绕是十分重要的工序,而电极组件通常需要经过卷针进行卷绕。目前的卷针在卷绕的过程中易出现极耳错位的情况,而极耳错位易导致电流流通面积减小,甚至会导致电流无法正常流通从而减少电池容量;极耳错位还容易导致部分区域电压过高而影响电池寿命;极耳错位还容易导致焊接短路、脱焊等情况出现;即极耳错位容易对电极组件的容量、寿命、安全性能产生负面影响。
极耳错位可能有多种原因导致,例如设备精度不足、极耳材质和尺寸的偏差、极片厚度不均匀等原因。其中,极耳存在一定的厚度,而在电极组件卷绕在卷针上的过程中,随着电极组件卷绕圈数的增加,电极组件最外层的周长逐渐增加,而电极组件上极耳的间距是大致相同的,这就很容易导致各层极耳之间的错位。
基于以上考虑,为了缓解电极组件卷绕过程中极耳错位的问题,本申请实施例提供一种卷针,使卷针包括内针以及环绕内针设置的至少两个外针,设置第一结构件,使第一结构件能够沿内针的轴向运动并能够推动外针沿内针的径向远离内针运动,以扩大卷针的外径。
在这样的卷针中,第一结构件在内针的轴向上沿一个方向运动能够抵持于外针并推动外针运动,以扩大卷针的外径;而随着电极组件的卷绕,第一结构件可以在内针的轴向上沿另一方向运动以脱离外针,此时在电极组件卷绕的张力作用下,外针能够向靠近内针的方向运动并被压持于第一结构上,以使卷针的外径减小,并使电极组件最外圈的周长相应减小,从而缓解极耳错位的情况。
本申请实施例提供的卷针和卷绕设备可以卷绕形成圆柱状的电极组件,也可以卷绕形成的棱柱状的电极组件或其他形状的电极组件。卷绕设备形成的电极组件可以作为电池单体中发生电化学反应的部件,该电池单体可以用于使用电池作为电源的用电装置或者使用电池作为储能元件的各种储能系统。用电装置可以为但不限于手机、平板、笔记本电脑、电动玩具、电动工具、电瓶车、电动汽车、轮船、航天器等等。其中,电动玩具可以包括固定式或移动式的电动玩具,例如,游戏机、电动汽车玩具、电动轮船玩具和电动飞机玩具等等,航天器可以包括飞机、火箭、航天飞机和宇宙飞船等等。
以下实施例为了方便说明,以本申请一些实施例的一种卷绕设备1000用于形成方形的电极组件2000为例进行说明。
第一方面,图1至图3,本申请的一些实施例提供一种卷针10,该卷针10包括内针11、外针12和第一结构件13。其中,外针12有至少两个,且至少两个外针12沿内针11的周向环绕内针11;第一结构件13抵持于外针12,第一结构件13能够沿内针11的轴向相对外针12运动,以推动外针12沿内
针11的径向远离内针11。
图1至图3中,X轴所在的方向即为卷针10的轴向,也为内针11的轴向;卷针10的径向为垂直于卷针10的轴向的方向,如Y轴和Z轴所在的方向均为卷针10的径向,也为内针11的径向;内针11的周向即为环绕X轴的方向,内针11的周向也平行于Y轴和Z轴所在的平面。
内针11是指卷针10中位于卷针10内部的结构,内针11用于带动卷针10旋转,内针11能够与外部驱动结构(例如电机等)相连并随之旋转,即外部驱动结构可以通过驱动内针11旋转而带动卷针10旋转;内针11的形状可以为圆柱状,也可以为棱柱状或其他形状;内针11的材质可以包括塑料、金属或其他材料。
外针12是指卷针10中与电极组件2000接触的结构;外针12有至少两个,外针12的数量可以为两个,也可以为三个或更多个,至少两个外针12沿内针11的周向环绕内针11设置,即至少两个外针12能够拼合形成卷针10的侧壁结构,以使得电极组件2000能够卷绕在该侧壁结构上;至少两个外针12至少沿内针11的周向覆盖部分内针11,以便于电极组件2000卷绕于外针12形成的侧壁结构上。
因至少两个外针12环绕内针11并拼合形成卷针10的侧壁结构,故外针12的形状能够影响卷针10的形状;据此,外针12可以为弧形片状结构,此时卷针10可以为圆柱状结构;外针12也可以为平板状结构,此时卷针10可以为棱柱状结构,外针12也可以为形状的结构。
外针12的材质可以包括塑料、金属或其他材料;外针12与内针11的材质可以相同,也可以不同。
外针12沿内针11的径向可活动地设于内针11的周侧,即外针12能够相对内针11运动,以沿内针11的径向靠近或远离内针11;外针12可以直接滑动连接于内针11,也可以通过导向结构的限制沿内针11径向运动,示例的,可以通过导轨、导轴或其他具有导向能力结构,并使外针12沿导轨、导轴等其他导向结构运动,以使得外针12沿内针11的径向运动。
第一结构件13是指卷针10中能够相对内针11活动的构件;第一结构件13可以设于内针11上并相对内针11活动,也可以设于卷针10的其他结构上并相对内针11活动,示例的,第一结构件13可以为设于内针11一侧的杆状结构、片状结构或其他形状的结构,第一结构件13也可以为套设于内针11的环状结构、筒状结构或其他形状的结构;第一结构件13的材质可以包括塑料、金属或其他材料。
第一结构件13能够沿内针11的轴向X相对外针12运动,且第一结构件13抵持于外针12,以使得第一结构件13运动能够推动外针12沿内针11的径向Y远离内针11。在一些实施例中,第一结构件13可以为楔形块,外针12抵接于楔形块的斜面,此时楔形块沿内针11的轴向运动能够通过斜面推动外针12沿楔形块的斜面运动,以远离内针11;在另一些实施例中,第一结构件13可以为连杆,连杆的一端能够沿内针11的轴向运动,连杆的另一端抵持于外针12,此时连杆的一端沿内针11的轴向运动能够推动另一端远离内针11;可以理解的,第一结构件13还可以包括其他结构,而不仅限于上述两种。
第一结构件13可以抵持于外针12沿内针11轴向X的边缘,也可以在外针12朝向内针11的一侧设置结构件,并使第一结构件13抵接于该结构件。
因外针12有至少两个,第一结构件13可以仅有一个并抵接于每个外针12;第一结构件13也可以有两个或更多个,以使得每个外针12均能够对应至少一个第一结构件13;可以理解的,在第一结构件13有多个的情况下,多个第一结构件13应能够同步运动,以带动外针12同步运动。
第一结构件13沿内针11的轴向X的运动可以通过多种结构实现。在一些实施例中,内针11上设有沿内针11的轴向X延伸的滑槽,第一结构件13的至少部分能够容纳于滑槽中并沿滑槽滑动;在另一些实施例中,内针11上可以设有沿内径的轴向X延伸导向轴,导向轴穿过第一结构件13,第一结构件13则能够沿导向轴滑动;在又一些实施例中,可以直接使内针11穿过第一结构件13,即使第一结构件13套设于内针11,以使得第一结构件13能够沿内针11的轴向X滑动。
可以理解的,第一结构件13沿一个方向运动(例如图3中沿X轴向右运动)可以推动外针12远离内针11以增加卷针10的外径,但第一结构件13沿另一方向运动(例如图3中沿X轴向左运动)则有可能导致外针12与第一结构件13脱离,此时第一结构件13不易带动外针12运动;在电极组件2000卷绕于卷针10的过程中,这种情况可以利用电极组件2000卷绕于卷针10对卷针10施加的压力缩小卷针10的外径,示例的,电极组件2000上的张力能够向卷针10施加一个指向内针11方向的压力,在第一结构件13沿另一方向运动(例如图3中沿X轴向左运动)的情况下,外针12脱离第一结构件13,第一结构件13无法对外针12提供支撑,此时电极组件2000产生的压力能够使外针12向靠近内针11的方向运动并重新抵接于第一结构件13,从而达到缩小卷针10外径的效果。
在电极组件2000卷绕于卷针10的过程中,随着电极组件2000卷绕圈数的增加,可以逐渐减小卷针10的外径,以减少电极组件2000最外层的极耳错位的情况出现;在电极组件2000卷绕过程中因其他原因导致极耳错位的情况下,也可以根据情况增加或缩小卷针10的外径,以缓解极耳错位的情况。
本实施例中,通过第一结构件13推动外针12沿内针11的径向远离内针11,从而能够达到扩大卷针10外径的效果;同时,也能够使第一结构件13脱离外针12,此时在电极组件2000卷绕过程中的张力的作用下,电极组件2000能够向卷针10施加压力以使得外针12能够沿内针11的径向靠近内针11,从而达到缩小卷针10外径的效果;使卷针10的外径能够增大或缩小,以使得卷针10能够在电极组件2000卷绕的过程中调节外径,以适应不同情况,缓解极耳错位的情况。
参考图2、图3,在一些实施例中,卷针10还包括设于卷针10内的弹性件14,弹性件14的一端与外针12相连,且弹性件14的另一端能够与内针11或另一外针12相连,弹性件14用于向外针12施加指向内针11方向的力。
弹性件14是指卷针10中具有弹性的结构;弹性件14可以包括弹簧、橡胶条或其他弹性结构;弹性件14的材质可以包括金属、橡胶或其他具有弹性的材料。
弹性件14设于卷针10内,即弹性件14位于至少两个外针12之间;弹性件14用于向外针12施加指向内针11方向的力,在第一结构件13运动并具有脱离外针12的趋势时,弹性件14能够带动外针12向内针11所在的方向运动,以靠近内针11并抵接于第一结构件13;示例的,以图3为例,在第一结构件13向左运动时,第一结构件13具有脱离外针12的趋势,此时弹性件14能够带动外针12向靠近内针11的方向运动,并能够使外针12压持于第一结构件13。
在外针12向远离内针11的方向运动时,弹性件14处于拉伸状态,并向外针12施加靠近内针11的力;在外针12位于距内针11最近的位置时,弹性件14可以处于拉伸状态,也可以处于不受力的自然状态。
弹性件14的一端与外针12相连,弹性件14的另一端可以连接于内针11;弹性件14的一端与外针12相连,弹性件14的另一端也可以连接于另一外针12,在外针12有三个或更多个的情况下,外针12可以连接于每个外针12,因多个外针12绕内针11的周向设置,在弹性件14与每个外针12均相连的情况下,弹性件14向每个外针12施加的力能够在内针11的轴线上相交;弹性件14还可以与内针11和每个外针12均相连,例如弹性件14的中部套设于内针11并于边缘处分别与每个外针12相连。
根据弹性件14的材质,弹性件14可以通过焊接、胶粘等方式与相应的外针12和内针11相连,也可以通过螺接、挂持等方式与相应的外针12和内针11相连。
示例的,弹性件14为橡胶圆环,而每个外针12朝向内针11的一侧均设有挂持部,每个外针12的挂持部沿内针11的周侧分布,此时橡胶圆环环绕于所有挂持部之外,每个挂持部均能够延伸至橡胶圆环内并抵持于橡胶圆环的内壁;在外针12向远离内针11的方向运动的情况下,橡胶圆环发生形变,在第一结构件13具有脱离外针12的趋势的情况下,橡胶圆环具有恢复原状的趋势并使每个外针12向靠近内针11的方向运动,以将外针12压持于第一结构件13,从而达到缩小卷针10外径的效果。
本实施例中,通过弹性件14向外针12施加指向内针11方向的力,以使得弹性件14能够将外针12压持于第一结构件13,并使得第一结构件13能够配合弹性件14带动外针12沿内针11的径向靠近或远离内针11运动,从而使得卷针10具有扩大外径和缩小外径的功能,并使得卷针10无需依赖电极组件2000卷绕的压力实现外径的缩小,进而便于更好的减少电极组件2000卷绕过程中极耳错位的情况出现。
参考图2至图5,在一些实施例中,第一结构件13包括第一斜面131,第一斜面131相对内针11的轴线倾斜并与内针11的轴线之间形成第一夹角,第一斜面131抵持于外针12,以使得外针12能够沿第一斜面131相对第一结构件13运动。
第一斜面131是指设于第一结构件13上的斜面,第一斜面131相对内针11的轴线倾斜;第一斜面131与内针11的轴线能够形成第一夹角,第一夹角即为图4、图5中角a所示的夹角;第一斜面131的倾斜方向可以有多种,第一斜面131的倾斜方向不同,第一结构件13推动外针12远离内针11所需的运动方向也不同。
示例的,第一斜面131的一端朝向卷针10内部,第一斜面131的另一端可以沿朝向卷针10外部、远离内针11轴线的方向倾斜,此时第一结构件13朝向卷针10内部运动能够推动外针12向远离内针11的方向运动;参考图4,第一斜面131的右端朝向卷针10内部,第一斜面131的左端向左上方倾斜,此时第一结构件13向右移动能够推动外针12沿第一斜面131向上运动,以远离内针11。
示例的,第一斜面131的一端朝向卷针10内部,第一斜面131的另一端也可以沿朝向卷针10外部、靠近内针11轴线的方向倾斜,此时第一结构件13朝向卷针10外部运动能够推动外针12向远离内针11的方向运动;参考图5,第一斜面131的右端朝向卷针10内部,第一斜面131的左端向左下方倾斜,此时第一结构件13向左移动能够推动外针12沿第一斜面131向上运动,以远离内针11。
本实施例中,使第一结构件13包括第一斜面131,并使第一斜面131抵持于外针12,此时第一结构件13移动能够推动外针12沿着第一斜面131向远离内针11的方向运动;同时在弹性件14或电极组件2000张力的作用下,外针12也能够在第一结构件13反向移动时沿着第一斜面131靠近内针11,从而使得卷针10的外径能够扩大或缩小。
参考图2至图5,在一些实施例中,第一夹角的角度范围为40°~50°;示例的,第一夹角的角度可以为40°、42°、44°、45°、46°、48°、50°或其他数值。
第一夹角即为第一斜面131与内径的轴线相交所形成的夹角,即为图4、图5中角a所示的夹角。
第一斜面131的第一夹角的角度能够影响第一结构件13的移动距离与外针12的移动距离之间的关系,即第一夹角的角度越大,第一结构件13移动单位距离时推动外针12移动的距离也越大。
使第一夹角的角度范围为40°~50°,以使得第一结构件13运动能够较快的带动外针12在内针11径向Y上运动,从而使得卷针10外径调节能够具有较快的响应速度,同时还能够使第一斜面131与外针12之间的摩擦阻力较小,降低摩擦损耗,延长了使用寿命。
示例的,第一夹角的角度可以为50°,此时第一结构件13移动较小的距离即能够推动外针12移动较大的距离,以使得第一结构件13运动能够较快的带动外针12在内针11径向Y上运动,从而使得卷针10外径调节能够具有较快的响应速度。
示例的,第一夹角的角度可以为45°,该设置既能够使卷针10外径调节具有较快的响应速度,还能够减小外针12与第一斜面131之间的摩擦力,从而降低摩擦损耗。
示例的,第一夹角的角度可以为40°,此时第一斜面131与外针12之间的摩擦阻力更小,摩擦损耗更低。
本实施例通过第一斜面131的夹角限制外针12能够沿内针11径向运动的距离,使得第一结构件13运动较短的距离即可调节卷针10外径的变化,使得卷针10外径的调节能够具有较快的响应速度;同时,还能够减小第一结构件13与外针12之间的阻力,从而减少第一结构件13与外针12之间的摩擦损耗,提高卷针10的使用寿命。
参考图2至图5,在一些实施例中,第一斜面131的长度范围为3mm~5mm;示例的,第一斜面131的长度可以为3mm、3.5mm、4mm、4.5mm、5mm或其他数值。
第一斜面131的长度即为第一斜面131在其倾斜角度长的尺寸,即为图4、图5中L1所示的尺寸。
第一斜面131的长度能够影响第一结构件13的移动距离与外针12的移动距离之间的关系,即第一斜面131的长度越大,外针12能够移动的最大距离也越大。
使第一斜面131的长度范围为3mm~5mm,以使得第一斜面131既能够满足外径尺寸调节的需求,还能够减小第一结构件13的尺寸,从而能够减小第一结构件13的空间需求。
示例的,第一斜面131的长度可以为3mm,第一夹角的角度可以为50°,此时第一结构件13移动较小的距离即能够推动外针12移动较大的距离,以使得第一结构件13运动能够较快的带动外针12在内针11径向Y上运动,从而使得卷针10外径调节能够具有较快的响应速度。
示例的,第一斜面131的长度可以为4mm,第一夹角的角度可以为45°,该设置既能够使卷针10外径调节具有较快的响应速度,还能够减小外针12与第一斜面131之间的摩擦力,从而降低摩擦损耗。
示例的,第一斜面131的长度可以为5mm,第一夹角的角度可以为40°,此时第一斜面131与外针12之间的摩擦阻力更小,摩擦损耗更低。
本实施例的技术方案提供了一些第一斜面131的长度范围,以通过第一斜面131的长度限制外针12能够沿内针11径向运动的距离,从而限制了卷针10外径的变化范围,以减少电极组件2000卷绕过程中极耳错位的情况出现。
参考图2至图6,在一些实施例中,卷针10还包括第二结构件151,第二结构件151与第一结构件13分别沿内针11的轴向设于内针11的相对两端,第二结构件151至少沿内针11的轴向抵持于外针12;第一结构件13能够沿内针11的轴向相对第二结构件151运动。
第二结构件151是指卷针10中用于配合第一结构件13支撑外针12的结构;第二结构件151可以
连接于内针11,也可以连接于卷针10的其他结构上,第二结构件151还可以为独立的构件;第二结构件151可以为杆状结构,也可以为块状结构或其他形状的结构;第二结构件151的材质可以包括塑料、金属或其他材料。
第二结构件151抵持于外针12,因外针12有至少两个,第二结构件151可以仅有一个并抵接于每个外针12;第二结构件151也可以有两个或更多个,以使得每个外针12均能够对应至少一个第二结构件151;在第二结构件151配合第一结构件13的情况下,每个外针12至少有两个受支撑的部位,以使得外针12能够较为稳定的沿内针11的径向运动。
第二结构件151至少沿内针11的轴向X抵接于外针12,即第二结构件151至少能够向外针12施加一个沿内针11轴向X并指向外针12的力;在第一结构件13沿内针11的轴向X运动并通过第一斜面131推动外针12移动的情况,该力能够平衡第一斜面131向外针12施加的平行于内针11轴向X的力,并能够限制第二结构件151在内针11轴向X上的运动,以使得外针12能够更好的沿内针11的径向Y运动。
第一结构件13和第二结构件151分别沿内针11的轴向X位于内针11的两端,以使得第一结构件13和第二结构件151分别支撑外针12的相对两侧,从而能够更好的提高外针12运动过程中的稳定性,减少歪斜等情况的出现。
第一结构件13能够沿内针11的轴向X相对第二结构件151运动,在第一结构件13能够运动的基础上,第二结构件151可以相对卷针10固定,也可以相对卷针10可活动。
本实施例中,将第一结构件13和第二结构件151设于内针11的两端,并使得第一结构件13和第二结构件151能够分别抵持外针12的两端;在第一结构件13运动并推动外针12沿内针11径向运动的过程中,外针12能够始终抵持于第二结构件151,以通过第二结构件151配合第一结构件13共同承托外针12,从而能够增加外针12运动过程中的稳定性,减少外针12在运动过程中出现歪斜等情况。
参考图2至图6,在一些实施例中,第二结构件151包括第二斜面1511,第二斜面1511抵持于外针12,第二斜面1511与内针11的轴线之间形成第二夹角;第二斜面1511所在的平面与第一斜面131所在的平面相交处沿内针11的径向Y的投影处于内针11中部区域。
第二斜面1511是指设于第二结构件151上的斜面,第二斜面1511与内针11的轴线能够形成第二夹角,即第二斜面1511相对内针11的轴线倾斜,第二夹角即为图4、图5中角a所示的夹角。
第二斜面1511所在的平面与第一斜面131所在的平面相交是指第二斜面1511与第一斜面131不平行;两者相交处沿内针11径向Y的投影处于内针11的中部区域,即第一斜面131与第二斜面1511的倾斜方向相反,内针11的中部区域即为内针11沿其轴向X处于第一结构件13和第二结构件151之间的区域,示例的,第一夹角大于90°的情况下,第二夹角小于90°;该设置能够使得外针12抵接于第一斜面131的一端沿第一斜面131运动时,外针12抵接于第二斜面1511的一端能够沿第二斜面1511同步运动,并能够使外针12在运动过程中较为平稳而不易歪斜,以便于为电极组件2000提供支撑,并减少电极组件2000在卷绕过程发生形变等异常。
本实施例中,在第二结构件151上设置第二斜面1511,并使第二斜面1511与第一斜面131的相交处处于内针11的中部区域,以使得第一斜面131和第二斜面1511倾斜方向相反;在第一结构件13运动并推动外针12移动的过程中,该设置使得外针12能够始终抵接于第二斜面1511并沿第二斜面1511运动,以通过第二斜面1511承托外针12,提高外针12运动的稳定性。
参考图2至图6,在一些实施例中,第二夹角与第一夹角相等。
第二夹角与第一夹角相等是指第二斜面1511与第一斜面131的倾斜角度相同;因第一结构件13与第二结构件151均抵接于外针12,第一斜面131和第二斜面1511的倾斜角度相同能够使得外针12抵接于第一斜面131的一端沿第一斜面131运动时,外针12抵接于第二斜面1511的一端能够沿第二斜面1511同步运动,并能够使外针12在运动过程中较为平稳而不易歪斜,以便于为电极组件2000提供支撑,并减少电极组件2000在卷绕过程发生形变等异常。
第二斜面1511能够向外针12提供一个平行于内针11轴向X的力,该力能够限制外针12在内针11轴向X上的移动;同时,第二斜面1511还能够向外针12提供一个平行于内针11径向Y的力,该力能够起到支撑和承托外针12的作用,从而进一步的减少外针12在运动过程中歪斜的情况出现,并提高外针12运动的稳定性。
示例的,第一斜面131的一端朝向卷针10内部,第一斜面131的另一端可以沿朝向卷针10外部、
远离内针11轴线的方向倾斜,此时第二斜面1511的一端朝向卷针10内部,第二斜面1511的另一端可以沿朝向卷针10外部、远离内针11轴线的方向倾斜,此时第一结构件13向靠近第二结构件151运动能够推动外针12较为平稳的向远离内针11的方向运动;参考图4、图6,第一斜面131的右端朝向卷针10内部,第一斜面131的左端向左上方倾斜,第二斜面1511的左端朝向卷针10内部,第二斜面1511的右端向右上方倾斜,此时第一结构件13向右移动能够推动外针12较为稳定的沿第一斜面131和第二斜面1511向上运动,以远离内针11。
本实施例中,使第二斜面1511与第一斜面131的倾斜角度相同,以使得第一结构件13运动并推动外针12移动的过程中,外针12能够始终抵接于第二斜面1511并沿第二斜面1511运动,以通过第二斜面1511承托外针12,从而进一步提高外针12运动的稳定性,减少外针12在运动过程中出现歪斜等情况。
参考图2至图6,在一些实施例中,外针12上设有两个第三结构件1221,两个第三结构件1221沿内针11的轴向设于外针12的两端,两个第三结构件1221分别抵持于第一结构件13和第二结构件151。
第三结构件1221是指外针12上用于抵接第一结构件13的结构;第三结构件1221可以通过焊接、粘接、一体成型制造或其他方式固定连接于外针12,也可以通过螺接、卡接或其他方式可拆卸地连接于外针12;第三结构件1221可以为杆状结构,也可以为块状结构或其他形状的结构;第三结构件1221的材质可以包括塑料、金属或其他材料。
第三结构件1221有两个,且两个设于外针12沿内针11轴向X的两端,示例的,两个第三结构件1221可以设于外针12沿内针11轴向X的两端,两个第三结构件1221也可以设于外针12两端朝向内针11的一侧;示例的,第三结构件1221位于外针12朝向内针11的一侧,即第三结构件1221位于卷针10内部,以使得外针12朝向外界的一侧能够较为平滑,从而在电极组件2000卷绕于卷针10的过程中减少对电极组件2000的损伤。
在卷针10包括第一结构件13和第二结构件151且第一结构件13和第二结构件151分别位于内针11沿其轴向X的相对两端的情况下,两个第三结构件1221分别位于外针12沿内针11轴向X的两端,能够使得两个第三结构件1221能够分别抵接于第一结构件13和第二结构件151,此时外针12具有两个支撑部位,从而使得外针12能够较为稳定运动,而不易出现歪斜等情况。
本实施例中,在外针12上设置两个第三结构件1221,并分别抵持于第一结构件13和第二结构件151,以使得第一结构件13和第二结构件151均能够通过第三结构件1221承托外针12,从而能够增加外针12运动过程中的稳定性,减少外针12在运动过程中出现歪斜等情况。
参考图2至图6,在一些实施例中,两个第三结构件1221均包括第三斜面12211,两个第三斜面12211中的一个平行于相邻的第一斜面131并抵持于第一斜面131,两个第三斜面12211中的另一个平行于相邻的第二斜面1511并抵持于第二斜面1511。
第三斜面12211是指设于第三结构件1221上的斜面,第三斜面12211平行与第一斜面131,且第三斜面12211抵持于第一斜面131,以使得第一结构件13沿内针11轴向X运动能够通过第一斜面131和第三斜面12211推动外针12沿内针11径向Y运动。
示例的,第一斜面131和第三斜面12211的一端可以均朝向卷针10内部,第一斜面131和第三斜面12211的另一端可以均沿朝向卷针10外部、远离内针11轴线的方向倾斜;参考图4,第一斜面131和第三斜面12211的右端均朝向卷针10内部,第一斜面131和第三斜面12211的左端均向左上方倾斜,此时第一结构件13向右移动能够推动外针12沿第一斜面131向上运动,以远离内针11。
示例的,第一斜面131和第三斜面12211的一端均朝向卷针10内部,第一斜面131和第三斜面12211的另一端也可以均沿朝向卷针10外部、靠近内针11轴线的方向倾斜;参考图5,第一斜面131和第三斜面12211的右端均朝向卷针10内部,第一斜面131和第三斜面12211的左端均向左下方倾斜,此时第一结构件13向左移动能够推动外针12沿第一斜面131向上运动,以远离内针11。
两个第三结构件1221中与第一结构件13相邻的一者的第三斜面12211平行于相邻的第一斜面131,且该第三斜面12211抵持于第一斜面131并与第一斜面131面接触;两个第三结构件1221中与第二结构件151相邻的另一者的第三斜面12211平行于相邻的第二斜面1511,且该第三斜面12211抵持于第二斜面1511并与第二斜面1511面接触;该设置使得两个第三结构件1221与第一结构件13、第二结构件151之间均为面接触,以进一步提高第三结构件1221相对第一结构件13、第二结构件151运动的稳定性,从而能够进一步提高外针12的运动稳定性,减少外针12歪斜等情况的出现。
同时,第三结构件1221与第一结构件13、第二结构件151面接触还能够减少接触部位应力集中的情况,从而减少第一结构件13、第二结构件151和第三结构件1221的损伤,延长了卷针10的使用寿命。
本实施例中,在第三结构件1221上设置第三斜面12211,并使两个第三斜面12211分别平行于相邻的第一斜面131或第二斜面1511,以使第三结构件1221和第一结构件13、第二结构件151之间为面接触,从而能够增加第三结构件1221与第一结构件13、第三结构件1221与第二结构件151之间接触的稳定性,从而能够进一步增加外针12运动过程中的稳定性,减少外针12在运动过程中出现歪斜等情况。
参考图2、图3,在一些实施例中,第一结构件13固定连接于内针11;卷针10还包括驱动组件16,驱动组件16用于驱动内针11沿内针11的轴向运动,以通过第一结构件13推动外针12沿内针11的径向远离内针11。
驱动组件16是指卷针10中用于驱动内针11活动的结构,驱动组件16可以包括气缸、电动伸缩缸或其他直线进给结构,也可以包括齿轮齿条结构配合电机、曲柄滑块结构配合电机或其他结构。
驱动组件16可以设于卷针10内部,也可以设于卷针10之外;示例的,驱动组件16沿内针11的轴向设于卷针10之外的一侧。
第一结构件13固定连接于内针11,以使得驱动组件16驱动内针11运动能够带动第一结构件13同步运动;因卷针10的尺寸通常较小,该设置使得驱动组件16可以设于卷针10之外,而无需设于卷针10内部,从而降低了驱动组件16的布设难度,也能够减少对卷针10内部空间的需求。
本实施例通过驱动组件16带动内针11运动,并通过内针11带动第一结构件13运动,以使得第一结构件13能够推动外针12运动,从而达到调节卷针10外径的效果。
参考图2、图3,在一些实施例中,外针12上开设有进气孔1211;至少两个外针12能够围成气流空间102,气流空间102与进气孔1211相连通,且气流空间102用于与抽气装置相连通,以在气流空间102中形成负压。
进气孔1211是指开设在外针12上的孔结构,卷针10之外的气体能够经过进气孔1211进入卷针10内部;进气孔1211可以为方形孔、圆形孔或其他形状的孔结构,进气孔1211可以为直孔、阶梯孔、锥形孔或其他形状的孔结构;进气孔1211可以有一个,也可以有两个或更多个,在进气孔1211有两个或更多个的情况下,多个进气孔1211可以均匀阵列设置在外针12上,也可以不规则的排布在外针12上。
至少两个外针12能够围成气流空间102,内针11处于该气流空间102之内;根据外针12的形状,气流空间102可以为圆柱状空间、棱柱状空间或其他形状的空间;气流空间102与进气孔1211相连通,以使得卷针10之外的气体能够经进气孔1211进入气流空间102中。
气流空间102用于与抽气装置相连,抽气装置是指用于将气流空间102中的气体抽出至卷针10之外的结构,抽气装置可以包括风机、真空泵或其他能够传输气体的结构。
抽气装置可以设于气流空间102中,也可以设于卷针10之外;示例的,抽气装置设于卷针10之外。
抽气装置能够将气流空间102中的气体抽出至卷针10之外,并在气流空间102中形成负压;在电极组件2000没有覆盖在卷针10上的情况下,抽气装置能够将卷针10之外的气体自进气孔1211抽入至气流空间102中,并将气流空间102中的气体抽出至卷针10之外;在电极组件2000覆盖卷针10的至少部分的情况下,抽气装置形成的负压能够将电极组件2000与卷针10接触的部分吸附在外针12上,从而固定电极组件2000的相应部分。
可以理解的,外针12沿内针11的径向Y运动可能会导致相邻外针12之间出现缝隙,但因卷针10的外径需求较小,外针12的移动距离也较小,相邻外针12之间的缝隙也较小,通过增加抽气装置的功率的方式,卷针10仍旧能够较好的将电极组件2000吸附在卷针10上;同时,因为电极组件2000的卷绕,电极组件2000能够覆盖相邻外针12之间的缝隙的大部分,从而能够进一步减少负压的损伤。
本实施例中,抽气装置能够将气流空间102中的空气抽出至卷针10之外,以在气流空间102中形成负压,气流空间102中的负压能够将进气孔1211附近的电极组件2000吸附在外针12上,以达到固定电极组件2000的作用。
参考图2、图3,在一些实施例中,进气孔1211有至少两个,且至少两个进气孔1211均匀的排布于外针12上。
进气孔1211有至少两个,即进气孔1211的数量可以为两个,也可以为三个或更多个。
在电极组件2000受负压的作用被吸附在卷针10上的情况下,电极组件2000的主要受力部位为靠近进气孔1211的部分;据此,使进气孔1211均匀排布于外针12上能够使得电极组件2000的受力更为
均匀,从而能够减少电极组件2000局部集中受力可能导致的变形等情况,也能够使得电极组件2000能够更好的被吸附并贴合在外针12上,从而减少电极组件2000局部受力不足导致翻折等情况的出现。
本实施例中,使进气孔1211有至少两个,以使得外针12上能够具有至少两个吸附电极组件2000的位置,从而能够提高对电极组件2000固定的稳定性,并能够提高固定效果;使至少两个进气孔1211均匀排布,以使得电极组件2000受到的吸附力能够较为均匀,从而减少电极组件2000受力不均可能导致的形变等异常。
参考图2、图3,在一些实施例中,进气孔1211的孔径范围为1mm(毫米)~2mm;示例的,进气孔1211的孔径可以为1mm、1.2mm、1.4mm、1.5mm、1.6mm、1.8mm、2mm或其他数值。
进气孔1211的孔径即为进气孔1211的直径,参考图3,图中R所示的尺寸即为进气孔1211的孔径;进气孔1211的孔径在1mm~2mm的范围内使得气流空间102中的负压既能够吸附进气孔1211附近的电极组件2000,也不易导致电极组件2000或隔膜的部分变形并进入进气孔1211,从而能够减少对电极组件2000的损伤。
相邻两个进气孔1211之间的距离为2mm~4mm;示例的,相邻两个进气孔1211之间的距离可以为2mm、2.5mm、3mm、3.5mm、4mm或其他数值。
相邻两个进气孔1211之间的距离设置相邻两个进气孔1211的圆心之间的距离,参考图3,图中W所示的尺寸即为相邻两个进气孔1211之间的距离;因气流空间102中的负压对电极组件2000的吸附力的强弱与各个进气孔1211的总面积相关,故相邻两个进气孔1211之间的距离在2mm~4mm的范围内既能够更好的将电极组件2000吸附在外针12上,还能够使得外针12具有一定的强度,以减少进气孔1211对外针12强度的负面影响,同时能够使得外针12能够较好的对电极组件2000提供支撑。
示例的,进气孔1211的孔径可以为1mm,相邻两个进气孔1211之间的间距可以为2mm,此时进气孔1211的孔径较小,单个进气孔1211的位置上对电极组件2000的吸附力较小,电极组件2000更不易形变,同时进气孔1211的数量较多,以将电极组件2000吸附在外针12上。
示例的,进气孔1211的孔径可以为1.5mm,相邻两个进气孔1211之间的间距可以为3mm,此时进气孔1211的孔径变大,单个进气孔1211的位置上对电极组件2000的吸附力增大,电极组件2000不易形变,同时能够更好的吸附电极组件2000。
示例的,进气孔1211的孔径可以为2mm,相邻两个进气孔1211之间的间距可以为4mm,此时进气孔1211的孔径较大,单个进气孔1211的位置上对电极组件2000的吸附力较大,从而能够更好的吸附电极组件2000。
本实施例提供了一些进气孔1211的孔径范围和间距范围,以使得进气孔1211既能够较为稳定的吸附电极组件2000,也能够减少电极组件2000或隔膜进入进气孔1211导致电极组件2000变形的情况出现。
在一些实施例中,负压的范围为-50KPa(千帕斯卡)~-75KPa;示例的,负压的范围可以为-50KPa、-55KPa、-60KPa、-65KPa、-70KPa、-75KPa或其他数值。
因卷针10之外的气压为正常大气压,故负压的绝对值越大,卷针10对电极组件2000的吸附性能越好;使负压的范围为-50KPa~-75KPa,使得卷针10既能够较为稳定的吸附电极组件2000,还能够减少电极组件2000或隔膜进入进气孔1211导致电极组件2000变形的情况出现。
示例的,气流空间102中的负压值可以为-50KPa,此时卷针10既能够更好的减少电极组件2000变形的情况,也能够稳定的吸附电极组件2000。
示例的,气流空间102中的负压值可以为-62.5KPa,此时卷针10既能够较好的减少电极组件2000变形的情况,也能够较稳定的吸附电极组件2000。
示例的,气流空间102中的负压值可以为-75KPa,此时卷针10既能够更稳定的吸附电极组件2000,也能够减少电极组件2000变形的情况。
本实施例提供了一些气流空间102中的负压的范围,以使得卷针10以既能够较为稳定的吸附电极组件2000,也能够减少电极组件2000或隔膜进入进气孔1211导致电极组件2000变形的情况出现。
参考图2、图3,在一些实施例中,内针11上开设有与气流空间102相连通的气流通道101,气流通道101的一端用于与抽气装置相连通,以将气流空间102中的气体经气流通道101抽出至卷针10之外。
气流通道101是指开设于内针11内部的通道结构;气流通道101可以由镶嵌在内针11中的管件形
成,也可以直接在内针11中开设孔结构形成;气流通道101可以为直线型结构,也可以为弯曲结构;沿气流通道101的径向,气流通道101的截面形状可以为方形,也可以为圆形或其他形状。
气流通道101与气流空间102相连通,且气流通道101的一端与抽气装置相连通,以使得抽气装置能够将气流空间102中的气体抽入气流通道101,并将气流通道101中的气体抽出至卷针10之外;气流通道101远离抽气装置的一端可以直接与气流空间102相连通,也可以在内针11朝向外针12的侧壁上开设一个或多个通孔,以通过通孔使气流通道101与气流空间102相连通。
本实施例在内针11中开设气流通道101,以使得抽气装置能够通过气流通道101将气流空间102中的气体抽出并形成负压,从而便于抽气装置将气体自气流空间102中抽出;因卷针10整体尺寸通常较小,该设置还能够减少气流通道101对卷针10内部空间的占用,从而能够降低卷针10内部各个结构的排布难度,节省了空间。
参考图2、图3,在一些实施例中,外针12包括中间部121,中间部121沿内针11轴向的两端均连接有端部122,端部122抵持于第一结构件13;进气孔1211至少开设于中间部121上,气流空间102至少形成于不同外针12的中间部121之间。
中间部121和端部122分别为外针12的部分结构,端部122沿内针11的轴向X设于中间部121的两端。
根据卷针10的形状,中间部121可以为弧形片状结构、平面片状结构或其他形状的结构;中间部121的材质可以包括金属、塑料或其他材料。
因端部122设于中间部121的两端,并主要用于抵持第一结构件13和第二结构件151,故电极组件2000在卷绕过程中主要与中间部121接触,据此端部122的形状可以与中间部121相同或相似,也可以与中间部121不同;示例的,为减少对电极组件2000的损伤,端部122与中间部121朝向卷针10之外的侧壁的形状相同,在得端部122连接于中间部121的情况下,该设置能够减少端部122的侧壁和中间部121的侧壁在两者相连部位的错位,从而减少对电极组件2000的损伤。
端部122可以通过螺接、卡接等方式可拆卸地连接于中间部121,也可以通过焊接、粘接、一体成型等方式固定连接于中间部121;端部122的材质可以包括金属、塑料或其他材料,端部122的材质可以与中间部121的材质相同,也可以与中间部121的材质不同。
进气孔1211至少开设在中间部121上,即可以仅在中间部121上开设进气孔1211,也可以在中间部121和端部122上均开设进气孔1211;气流空间102至少形成在不同外针12的中间部121之间,即气流空间102可以仅形成在不同外针12的中间部121之间,也可以形成在不同外针12的中间部121与端部122之间。
本实施例中,使外针12包括中间部121和端板,以使得端部122能够抵接于第一结构件13,以便于第一结构件13推动外针12移动;将进气孔1211开设于中间部121上,以便于卷针10在中间部121附近固定电极组件2000,从而使得卷针10能够更稳定的固定电极组件2000。
在一些实施例中,中间部121的厚度范围为5mm~8mm;示例的,中间部121的厚度可以为5mm、5.5mm、6mm、6.5mm、7mm、7.5mm、8mm或其他数值。
中间部121的厚度即为中间部121在内针11径向Y上的尺寸;因中间部121主要用于在电极组件2000卷绕的过程中为电极组件2000提供支撑,故使中间部121的厚度在5mm~8mm的范围内,以使得中间部121既能够具有较强的强度,还能够减少对空间的占用以使得气流能够顺利的自气流空间102被抽出至卷针10之外,同时还能够减轻外针12的重量。
示例的,中间部121的厚度可以为5mm,此时中间部121的厚度较薄,卷针10的整体厚度较轻,气流空间102较大,以使得抽气装置形成的负压能够更好的在每个进气孔1211处吸附电极组件2000。
示例的,中间部121的厚度可以为6.5mm,此时中间部121的厚度增厚,卷针10的强度增加,中间部121既具有较强的强度,也能够较好的吸附电极组件2000。
示例的,中间部121的厚度可以为8mm,此时中间部121的厚度较厚,卷针10的强度较强,以便于更好的对卷绕在卷针10上的电极组件2000提供支撑。
在一些实施例中,端部122可拆卸地连接于中间部121,端部122可以通过螺接、卡接或其他方式可拆卸地连接于中间部121;示例的,端部122通过螺栓连接于中间部121,端部122与中间部121的螺栓连接部位可以位于外针12朝向内针11的一侧,以减少外针12在电极组件2000卷绕的过程中对电极组件2000的损伤。
因端部122抵接于第一结构件13和第二结构件151,而在卷针10卷绕的过程中,卷针10外径的变化可能较为频繁,在这样的情况下,端部122的磨损速度容易快于中间部121;使端部122可拆卸地连接于中间部121,以便于端部122的安装、更换和维修,也便于降低卷针10的维修成本,同时还便于卷针10的整体组装。
在一些实施例中,外针12的周侧面上还开设有下料槽123;在内针11的轴向上,下料槽123的至少一端与卷针10之外的空间相连通。
下料槽123是指卷针10上用于容纳取料装置的槽结构,下料槽123开设于外针12的周侧面上,即下料槽123的开口朝向卷针10之外,在电极组件2000卷绕于外针12之后,电极组件2000能够封闭下料槽123的该开口;下料槽123的长度方向可以平行于内针11的轴向X,也可以与内针11的轴向X呈夹角设置;下料槽123沿内针11的轴向X的至少一端与卷针10之外的空间相连通,以便于取料装置进入下料槽123中;沿下料槽123的深度方向,下料槽123的截面形状可以为方形、半圆形、梯形或其他形状。
这样的卷针10中,取料装置能够沿内针11的轴向X进入下料槽123内,取料装置还能够向远离内针11轴线的方向运动,并能够自下料槽123的开口向卷针10之外运动以贴触电极组件2000;取料装置在贴触电极组件2000后能够继续向远离内针11轴线的方向运动并使电极组件2000脱离外针12,以便于将电极组件2000自外针12上取下。
在外针12由端部122和中间部121拼接形成的情况下,端部122和中间部121上均可以设置下料槽123的部分结构,以在端部122安装于中间部121后拼合形成完整的下料槽123。
因卷针10包括至少两个外针12,故每个外针12上可以仅设置一个下料槽123,也可以设置两个或更多个下料槽123。
本实施例中,在外针12上设置下料槽123,从而便于下料装置进入卷绕后的电极组件2000中并将电极组件2000从卷针10上取下。
参考图1至图6,在一些实施例中,卷针10包括内针11、外针12和第二结构件151。
外针12有两个,两个外针12沿内针11的周向环绕设于内针11的周侧;两个外针12能够靠近或远离内针11运动,两个外针12靠近内针11运动能够相互贴合并拼合形成圆柱状结构;两个外针12之间形成有气流空间102。
外针12包括中间部121和沿内针11的轴向X设于中间部121两端的端部122;端部122上设有第三结构件1221,第三结构件1221上设有第三斜面12211;中间部121上开设有多个均匀阵列排布的进气孔1211,进气孔1211与气流空间102相连通。
外针12朝向内针11的一侧均设有挂持部,弹性件14为橡胶圆环并环绕于所有挂持部之外,即挂持部能够延伸至橡胶圆环内并抵持于橡胶圆环的内壁。
内针11上设有第一结构件13,第一结构件13上设有第一斜面131,且第一斜面131抵接于第三斜面12211,内针11能够沿其轴向X运动;内针11内部沿其轴向X开设有气流通道101,气流通道101通过开设于内针11的通孔与气流空间102相连通,且气流通道101的一端能够延伸至卷针10之外。
第二结构件151上设有第二斜面1511,第二斜面1511抵接于另一第三斜面12211。
第二结构件151为独立构件,第二结构件151设于底座15上,底座15沿内针11的轴向X设于卷针10的一侧,第二结构件151设于底座15上;内针11沿其轴向X的活动能够相对底座15活动;底座15上设有与内针11相连的驱动组件16,驱动组件16能够驱动内针11沿其轴向X运动。
底座15内还开设有空腔152,内针11的一端延伸至空腔152内并与空腔152相连通,且内针11沿其轴向X的运动不易使内针11的一端脱出空腔152;底座15上还设有与空腔152相连通的接口153,外部抽气装置能够与接口153相连通。
内针11沿靠近底座15的方向运动能够通过第一斜面131、第二斜面1511和第三斜面12211推动外针12沿内针11的径向Y远离内针11运动,并使弹性件14发生形变;内针11沿远离底座15的方向运动能够使第一斜面131和第二斜面1511具有脱离相应第三斜面12211的趋势,此时在弹性件14的作用下,第三斜面12211抵持于相应的第一斜面131或第二斜面1511,以并使外针12沿内针11的径向Y靠近内针11运动。
外部抽气装置启动能够将气流空间102中的气体经通孔抽入气流通道101,气流通道101内的气体经空腔152、接口153被抽入至抽气装置,最终被排出至卷针10之外的空间,以在气流空间102中形成
负压;在电极组件2000位于卷针10附近的情况下,该负压能够将电极组件2000靠近卷针10的部分吸附固定在外针12上,从而便于电极组件2000的卷绕,并减少电极组件2000卷绕过程中滑移等情况出现。
第二方面,本申请的一些实施例还提供一种卷绕设备1000,包括第一方面的一些实施例提供的卷针10;该卷绕装置卷绕形成的电极组件2000中的极耳不易错位,从而能够缓解极耳错位可能造成的电池寿命缩短、容量降低、存在安全风险等情况。
参考图7,该卷绕设备1000用于卷绕形成电极组件2000,电极组件2000包括第一极片91、第二极片93、第一隔膜92和第二隔膜94。其中,第一极片91和第二极片93的极性相反,第一极片91和第二极片93中的一者为阳极片,另一者为阴极片。第一隔膜92形成在第一极片91和第二极片93之间,第二隔膜94形成在第一极片91或第二极片93与第一隔膜92相对的另一侧。
参考图8至图12,在一些实施例中,卷绕设备1000包括第一放卷机构100、第二放卷机构200、复合机构300和卷绕机构400。其中,第一放卷机构100用于放卷第一极片91、第一隔膜92和第二极片93;第二放卷机构200用于放卷第二隔膜94;复合机构300至少用于压合第一极片91和第一隔膜92;卷绕机构400设于复合机构300的下游,卷绕机构400用于将第一极片91、第一隔膜92、第二极片93、第二隔膜94中卷绕形成电极组件2000。
第一放卷机构100是指用于放卷第一极片91、第一隔膜92和第二极片93的机构,第一放卷机构100可以包括多个放卷件,多个放卷件可以分别用于放卷第一极片91、第一隔膜92和第二极片93,放卷件可以为辊体、卷盘、转轴或其他结构。
复合机构300是指用于至少将第一极片91和第一隔膜92压合的机构,即复合机构300可以用于压合第一极片91和第一隔膜92,也可以用于压合第一极片91、第一隔膜92和第二极片93;复合机构300可以包括一个或多个复合组件,复合组件可以包括两个相对设置的复合辊。
复合机构300可以先复合第一极片91和第一隔膜92,此时第一极片91和第一隔膜92能够被传送至两个复合辊之间,两个复合辊对第一极片91和第一隔膜92进行压合,以使第一极片91和第一隔膜92相复合;在复合机构300用于复合第一极片91和第一隔膜92的情况下,复合机构300还可以将第二极片93与已复合的第一极片91和第一隔膜92进行复合。
可以理解的,复合机构300也可以先复合第一隔膜92和第二极片93,并将第一极片91与已复合的第一隔膜92和第二极片93进行复合。
复合机构300也可以直接复合第一极片91、第一隔膜92和第二极片93,此时第一极片91、第一隔膜92和第二极片93被传送至两个复合辊之间,两个复合辊对第一极片91、第一隔膜92和第二极片93进行压合,以使第一极片91、第一隔膜92和第二极片93相复合。
第二放卷机构200用于提供第二隔膜94并对第二隔膜94进行放卷,第二放卷机构200可以包括辊体,也可以包括卷盘、转轴等其他结构。第二放卷机构200可设于复合机构300的下游,也可设于卷绕机构400的一侧。第二放卷机构200可以包括被动结构,即此时卷绕设备1000中的其他结构(例如卷绕机构400)拉动第二隔膜94即可使第二放卷机构200放卷送料,第二放卷机构200也可以包括主动结构,例如通过电机等其他结构控制第二放卷机构200的放卷送料。
卷绕机构400是指卷绕设备1000中使极片与隔膜进行卷绕的机构。卷绕机构400位于复合机构300的下游,该下游指的是复合片体从复合机构300输出后所经过的区域。卷绕机构400与复合机构300间隔设置,可选的,卷绕机构400与复合机构300在水平方向上间隔设置,从而使卷绕机构400与复合机构300各自能获得较大的布局空间,方便布置各部件。卷绕机构400可包括用于卷绕第一极片91、第一隔膜92、第二极片93和第二隔膜94的卷针10,卷绕机构400还可包括用于收尾处理的压持构件、贴胶构件、下料构件等。
卷绕设备1000还包括机架,机架用于为复合机构300、第二放卷机构200、卷绕机构400提供安装环境;机架可以是长方体状的箱体结构,机架也可以是其他结构;机架的材质可以包括金属、塑料或其他材料。机架可以包括立板,复合机构300、第二放卷机构200、卷绕机构400能够安装于立板上。
本实施例中,先将第一极片91、第一隔膜92和第二极片93中的两者复合,再将第一极片91、第一隔膜92、第二极片93、第二隔膜94在卷绕机构400上进行卷绕,该卷绕设备1000的复合机构300和卷绕机构400能够间隔设置,各自能够获得较大的空间,并且,卷绕设备1000无需将阴极极片、阳
极极片和隔膜单独向卷绕机构400供料,解决了卷绕机构400上方空间拥挤的问题,优化了卷绕设备1000的布局,有利于灵活排布各部件。
参考图8至图12,在一些实施例中,卷绕机构400包括基座50以及至少两个卷针10,卷针10转动连接于基座50上,基座50用于带动不同的卷针10依次交替地运动至复合机构300的一侧。
基座50是指卷绕机构400中为卷针10或其他结构提供固定基础的结构,基座50的形状可以是圆形、方形或其他形状;基座50的材质可以包括金属、塑料或其他形状。
卷针10设于基座50上且能够相对基座50转动,以便于卷绕第一极片91、第一隔膜92、第二极片93和第二隔膜94;卷针10设有至少两个,示例的,卷针10可以有两个,也可以有三个或更多个。
基座50能够带动卷针10运动,并带动不同的卷针10在复合机构300一侧依次交替运动,以使得一个卷针10位于复合机构300的一侧时,另一卷针10能够位于其他位置以便于进行收尾处理,该设置使得卷绕后的电极组件2000的收尾处理能够在不同于复合机构300的其他位置进行,而不必占用复合机构300一侧的空间,从而能够让出复合机构300另一侧的空间以便另一空置的卷针10运动至复合机构300一侧并卷绕第一极片91、第一隔膜92、第二极片93和第二隔膜94。
收尾处理是指对卷绕后的电极组件2000的尾部进行压合、贴胶等处理,可以在基座50的一侧设置收尾结构以对卷绕后的电极组件2000进行收尾处理;收尾结构可以包括用于压持卷绕后的电极组件2000的压持构件,例如压辊、压板等,收尾结构还可以包括用于固定极片和隔膜的贴胶构件,例如涂胶刷、涂胶辊等,收尾结构还可以包括用于将电极组件2000自卷针10取下的下料结构,例如机械手等。
可以理解的,在卷绕机构400处于复合机构300下游的前提下,基座50可以带动卷针10处于复合机构300的任一侧,示例的,参考图8,以图中从左至右为从上游至下游的方向,卷针10可以处于复合机构300的右下方,也可以处于复合机构300的右上方、下方或其他位置。
示例的,以基座50上设有两个卷针10为例进行说明,当一个卷针10处于复合机构300的旁侧时,该卷针10能够卷绕第一极片91、第一隔膜92、第二极片93和第二隔膜94并得到卷绕后的电极组件2000,此时另一卷针10处于其他位置,以便于收尾结构对该卷针10上的卷绕后的电极组件2000进行收尾处理;当复合机构300旁侧的卷针10卷绕完成时,处于其他位置的卷针10上的卷绕后的电极组件2000也被收尾处理结束并下料,即此时处于其他位置的卷针10空置;之后使基座50运动即可使空置的卷针10运动至复合机构300旁侧并对第一极片91、第一隔膜92、第二极片93和第二隔膜94进行卷绕,卷绕结束的卷针10则运动至处于其他位置以便于被收尾处理;即复合机构300的旁侧的大部分时间中均存在有卷针10,仅在卷针10交替运动时不存在卷针10,而第一放卷机构100和第二放卷机构200仅需要等待卷针10交替运动的短时间即可。
因复合机构300与卷针10之间存在距离,通过控制该距离也可以实现第一放卷机构100和第二放卷机构200的不减速持续放卷;即在一个卷针10卷绕结束后,第一放卷机构100和第二放卷机构200使第一极片91、第一隔膜92、第二极片93和第二隔膜94在复合机构300与卷针10之间的距离中运动,在第一极片91、第一隔膜92、第二极片93和第二隔膜94运动至卷针10所处的位置之前,空置的卷针10即能够运动至复合机构300的一侧并承接第一极片91、第一隔膜92、第二极片93和第二隔膜94。
本实施例中,设置基座50并将卷针10设置在基座50上,使基座50能够带动卷针10在复合机构300的一侧依次交替运动,以使得卷针10在卷绕第一极片91、第一隔膜92、第二极片93和第二隔膜94之后的收尾处理能够在其他位置进行,使得极片和隔膜的供料无需等待收尾处理结束,减少了极片和隔膜的供料等待时间。
参考图8,本申请的第一实施例提出一种卷绕设备1000,该卷绕设备1000的第一放卷机构100包括第一放卷组件21、第二放卷组件22和第三放卷组件23。其中,第一放卷组件21用于放卷第一极片91;第二放卷组件22用于放卷第一隔膜92;第三放卷组件23用于放卷第二极片93;复合机构300包括第一复合组件41,第一复合组件41用于将第一极片91、第一隔膜92、第二极片93压合形成第一复合片体。
第一放卷组件21、第二放卷组件22和第三放卷组件23均可以包括一个或多个辊体;在卷绕设备1000处于初始状态下,第一极片91绕设于第一放卷组件21上,第一隔膜92绕设于第二放卷组件22上,第二极片93绕设于第三放卷组件23上;在卷绕设备1000处于工作状态下,第一放卷组件21用于对第一极片91进行放卷,第二放卷组件22用于对第一隔膜92进行放卷,第三放卷组件23用于对第二极片93进行放卷,第一复合组件41用于接收第一极片91、第一隔膜92以及第二极片93,并将第一极
片91、第一隔膜92、第二极片93进行压合。
第一复合组件41可以包括两个相对设置的复合辊,第一极片91、第一隔膜92、第二极片93被传送至两个复合辊之间,两个复合辊相互配合对第一极片91、第一隔膜92和第二极片93施加一定的压力,以将第一极片91、第一隔膜92和第二极片93复合,其中第一隔膜92位于第一极片91与第二极片93之间,用于隔离第一极片91与第二极片93;第一极片91和第二极片93通过第一隔膜92上的粘结剂固定在一起并得到第一复合片体。
第一复合片体中,第一极片91、第一隔膜92和第二极片93依次叠设,第一隔膜92的双面具有粘性,使得第一极片91、第一隔膜92和第二极片93的相对位置被固定,不易相对移动。
第一复合组件41还可以包括多个传送辊,例如,第一放卷组件21和复合辊之间设有一个或多个传送辊,以将第一放卷组件21上的第一极片91传送至复合辊;第二放卷组件22和复合辊之间设有一个或多个传送辊,以将第二放卷组件22上的第一隔膜92传送至复合辊;第三放卷组件23和复合辊之间设有一个或多个传送辊,以将第三放卷组件23上的第二极片93传送至复合辊。
示例的,由于第一隔膜92需要设置于第一极片91和第二极片93之间,可以使第二放卷组件22位于第一放卷组件21与第三放卷组件23之间,使得第一复合组件41的空间布局较为合理。可以理解,各放卷组件和第一复合组件41可灵活设置,不限于上述布置方式。可选的,在卷绕设备1000的高度方向上,第一放卷组件21、第二放卷组件22、第三放卷组件23自上而下依次设置,使得第一极片91、第一隔膜92和第二极片93从上到下层叠设置;第一极片91可为阳极片,第二极片93可为阴极片,且形成的第一复合片体中,阳极片的长度大于阴极片的长度,以使阳极片能够包覆阴极片。可以理解,在其他实施例中,也可将第一极片91设置为阴极片,第二极片93设置为阳极片。
本实施例中,第一复合组件41能够一次性复合第一极片91、第一隔膜92和第二极片93,复合方式简单,复合效率较高。
参考图8,在一些实施例中,卷绕设备1000还包括第一极片切断组件61和第二极片切断组件62。其中,第一极片切断组件61设置于第一放卷组件21与第一复合组件41之间,第一极片切断组件61用于切断第一极片91;第二极片切断组件62设置于第三放卷组件23与第一复合组件41之间,第二极片切断组件62用于切断第二极片93。
极片切断组件是指卷绕设备1000中用于切断极片的结构,其中,第一极片切断组件61、第二极片切断组件62均可以包括多种切断结构,例如沿直线往复运动的直线切刀、绕轴旋转的凸轮切刀等。直线切刀搭配定切刀使用,直线切刀能够朝向靠近或远离定切刀的方向运动。
本实施例中,使卷绕设备1000还包括第一极片切断组件61和第二极片切断组件62,以分别切断第一极片91和第二极片93,以使得第一极片切断组件61和第二极片切断组件62能够在第一极片91、第一隔膜92和第二极片93复合前先切断第一极片91和第二极片93,从而能够较为容易的使隔膜的长度大于极片的长度,满足电极组件2000的使用需求。
参考图8,在一些实施例中,第二放卷机构200设于第一复合组件41和卷绕机构400之间,即第二放卷机构200位于第一复合组件41的下游,并位于卷绕机构400的上游。
第二放卷机构200设于第一复合组件41的下游,从而使第二放卷机构200不仅能放卷第二隔膜94,还能够将第二隔膜94与第一复合片体一同传送至卷绕机构400。
第二放卷机构200包括隔膜放卷组件31和传送辊32,隔膜放卷组件31用于放卷第二隔膜94,传送辊32用于供第二隔膜94与第一复合片体汇合形成叠合片体,并将叠合片体传送至卷绕机构400。
第二放卷机构200包括隔膜放卷组件31和传送辊32,传送辊32用于供第一复合片体和第二隔膜94汇合,从而使第一复合片体和第二隔膜94能够层叠设置并形成叠合片体,然后叠合片体被传送至卷绕机构400进行卷绕。
示例的,卷绕设备1000还可包括隔膜复合组件(图中未示出),隔膜复合组件设于传送辊32与卷绕机构400之间,隔膜复合组件用于将第二隔膜94与第一复合片体相复合。隔膜复合组件可位于传送辊32的上游或下游。隔膜复合组件可包括两个相对设置的复合辊,两个复合辊通过向第二隔膜94与第一复合片体施加压力,使第二隔膜94与第一复合片体相复合,以使得第二隔膜94与第一复合片体能够在进入卷绕机构400之前预先完成复合,不易相互移位。
可以理解的,隔膜复合组件也可以省略,即无需在入卷前将第二隔膜94与第一复合片体相复合;此时,可以使第二隔膜94与第一复合片体在卷针10处复合。
本实施例中,第二放卷机构200位于第一复合组件41的下游,第二放卷机构200提供的第二极片93能够与第一复合片体叠合并一同入卷,第二放卷机构200能够与卷绕机构400间隔设置,避免卷绕机构400的上方空间拥挤的问题;将各放卷组件与卷绕机构400分开设置,布局灵活方便。
参考图8,在一些实施例中,卷绕设备1000还包括第一隔膜切断组件71,第一隔膜切断组件71与卷绕机构400相邻设置且用于切断第一隔膜92和/或第二隔膜94。
由于第一隔膜92、第二隔膜94供料时均采用连续的卷料,在第一隔膜92、第二隔膜94与第一极片91以及第二极片93叠合后,需要使用第一隔膜切断组件71将第一隔膜92、第二隔膜94切断。
第一隔膜切断组件71的数量可为一个,此时第一隔膜切断组件71同时切断第一隔膜92和第二隔膜94;第一隔膜切断组件71的数量也可为至少两个,此时一个第一隔膜切断组件71用于切断第一隔膜92,另一个第一隔膜切断组件71用于切断第二隔膜94。
第一隔膜切断组件71设于卷绕机构400处,从而使第一隔膜切断组件71能够在第一隔膜92、第二隔膜94入卷前或入卷后对隔膜实施切割,第一隔膜切断组件71的具体位置可灵活设置。
第一隔膜切断组件71可以包括多种切断结构,例如沿直线往复运动的直线切刀、绕轴旋转的凸轮切刀、激光切割结构等。
示例的,第一隔膜切断组件71有一个且位于基座50一侧;在第一极片91、第一隔膜92、第二极片93和第二隔膜94卷绕于卷针10上后,基座50带动卷针10向收尾结构处移动,此时第一隔膜切断组件71能够将第一隔膜92和第二隔膜94切断,以便于收尾结构对卷绕后的电极组件2000进行收尾处理。
本实施例中,将第一隔膜切断组件71设于卷绕机构400处,以使得卷绕设备1000能够在电极组件2000入卷前或入卷后切断隔膜,无需耗费单独的隔膜切断时间,提升了整体的卷绕效率。
参考图8,在第一实施例提供的卷绕设备1000中,第一放卷组件21、第二放卷组件22和第三放卷组件23分别放卷第一极片91、第一隔膜92和第二极片93,并使得第一极片91、第一隔膜92和第二极片93在第一复合组件41处被压合而形成第一复合片体。
第一极片切断组件61和第二极片切断组件62分别用于切断第一极片91和第二极片93,以使得第一极片91和第二极片93在与第一隔膜92复合之前即被切断。
第二放卷机构200设于第一复合组件41和卷绕机构400之间,以使得第一复合片体能够在进入卷绕机构400之前先与第二隔膜94形成叠合片体。
第一隔膜切断组件71用于在基座50带动卷针10向收尾结构处移动的过程中将第一隔膜92和第二隔膜94切断,以便于收尾结构对卷绕后的电极组件2000进行收尾处理。
参考图9,本申请的第二实施例提出一种卷绕设备1000,包括第一放卷机构100、第二放卷机构200、复合机构300和卷绕机构400;与第一实施例不同的是,第一隔膜切断组件71位于卷绕机构400的上游。
示例的,卷绕设备1000还可以包括设于第一隔膜切断组件71与卷绕机构400之间的输送件,输送件用于将第一隔膜92和/或第二隔膜94传送至卷绕机构400;输送件还可以用于输送第一极片91和第二极片93,即输送件用于将叠合片体从第一隔膜切断组件71处输送至卷针10处,输送件可包括多种输送结构,例如夹爪、输送带、真空吸附传输皮带等。输送件也可输送复合片体或第二隔膜94,不限于输送叠合片体。
在第二实施例中,第二放卷机构200设于第一复合组件41的下游,第二放卷机构200包括隔膜放卷组件31和第一传送辊32,隔膜放卷组件31用于放卷第二隔膜94,第一传送辊32用于供第二隔膜94与第一复合片体汇合形成叠合片体。
可以理解的,输送件也可以省略,例如,第一隔膜切断组件71与卷绕机构400临近,切断后的电极组件2000能够直接被卷针10固定和卷绕。
第一隔膜切断组件71位于卷绕机构400的上游,第一隔膜切断组件71能够在叠合片体入卷之前切断第一隔膜92和第二隔膜94,第一隔膜切断组件71可包括多种切断结构,例如沿直线往复运动的直线切刀、绕轴旋转的凸轮切刀、激光切割结构等。
当前一个卷针10卷绕电极组件2000之后,第一隔膜切断组件71切断第一隔膜92和第二隔膜94,输送件将下一个电极组件2000的首端输送至空置的卷针10上,以便于卷针10卷绕下一个电极组件2000。
参考图10,本申请的第三实施例提出一种卷绕设备1000,包括第一放卷机构100、第二放卷机构
200、复合机构300和卷绕机构400;与第一实施例不同的是,第二放卷机构200设于卷绕机构400的一侧,第二放卷机构200用于将第二隔膜94传送至卷针10上,此时,第一复合片体与第二隔膜94在卷针10上汇合。
在第三实施例中,第二放卷机构200直接向卷绕机构400传送第二隔膜94,从而使第一复合组件41传送的第一复合片体和第二放卷机构200传送的第二隔膜94一同入卷并在卷针10处复合形成电极组件2000。
如图10所示,第一隔膜切断组件71位于基座50一侧;在第一复合片体和第二隔膜94卷绕于卷针10上后,基座50带动卷针10向收尾结构处移动,此时第一隔膜切断组件71能够将第一隔膜92和第二隔膜94切断,以便于收尾结构对卷绕后的电极组件2000进行收尾处理。
参考图11,本申请的第四实施例提出一种卷绕设备1000,包括第一放卷机构100、第二放卷机构200、复合机构300和卷绕机构400;第二放卷机构200设于卷绕机构400的一侧,第二放卷机构200用于将第二隔膜94传送至卷针10,以使第一复合片体与第二隔膜94在卷针10上汇合;与第三实施例不同的是,卷绕设备1000中的第一隔膜切断组件71不同。
在第四实施例中,第一隔膜切断组件71设于卷绕机构400的上游,第一隔膜切断组件71设有两个,一个第一隔膜切断组件71设于第一复合组件41与卷绕机构400之间且用于切断第一隔膜92,另一个第一隔膜切断组件71设于第二放卷机构200与卷绕机构400之间且用于切断第二隔膜94。
示例的,卷绕设备1000还可以包括两个输送件,各输送件分别设于对应的第一隔膜切断组件71与卷绕机构400之间,其中一个输送件用于输送第一复合片体,另一个输送件用于输送第二隔膜94。第一隔膜切断组件71可包括凸轮切刀,也可包括沿直线往复运动的切刀、激光切刀等。
本实施例中,第一隔膜92和第二隔膜94均在入卷之前进行切断,第一隔膜切断组件71不占用卷绕机构400的空间,无需对随基座50运动的卷针10进行避位。
参考图12,本申请的第五实施例提出一种卷绕设备1000,其中,第一放卷机构100包括第一放卷组件21和第二放卷组件22,第一放卷组件21用于放卷第一极片91,第二放卷组件22用于放卷第一隔膜92;复合机构300包括第二复合组件42,第二复合组件42用于将第一极片91、第一隔膜92压合形成第二复合片体;与第一实施例至第四实施例不同的,本第五实施例中,复合机构300的第二复合组件42仅用于复合第一极片91和第一隔膜92。
第二复合组件42用于将第一极片91和第一隔膜92压合形成第二复合片体。
第二复合组件42可以包括两个相对设置的复合辊,第一极片91和第一隔膜92被传送至两个复合辊之间,两个复合辊相互配合对第一极片91和第一隔膜92施加一定的压力,以将第一极片91和第一隔膜92复合,第一极片91通过第一隔膜92上的粘结剂固定在一起并得到第二复合片体,即第二复合片体为第一极片91和第一隔膜92叠设形成。
第二复合组件42还可以包括多个传送辊,例如,第一放卷组件21和复合辊之间设有一个或多个传送辊,以将第一放卷组件21上的第一极片91传送至复合辊;第二放卷组件22和复合辊之间设有一个或多个传送辊,以将第二放卷组件22上的第一隔膜92传送至复合辊。
本实施例中,使第二复合组件42能够先将第一极片91与第一隔膜92复合,以便于后续与第二极片93、第二隔膜94复合,从而能够减少两个极片与两个隔膜均在一个复合结构处复合可能导致的复合效果不良的情况出现。
参考图12,在第五实施例中,第一放卷机构100还包括第三放卷组件23,用于放卷第二极片93;复合机构300还包括第三复合组件43,第三复合组件43用于将第二复合片体、第二极片93与第二隔膜94压合形成电极组件2000。
第三复合组件43用于将第二复合片体、第二极片93与第二隔膜94压合形成电极组件2000。
第三复合组件43可以包括两个相对设置的复合辊,第二复合片体、第二极片93与第二隔膜94被传送至两个复合辊之间,两个复合辊相互配合对第二复合片体、第二极片93与第二隔膜94施加一定的压力,以将第二复合片体、第二极片93与第二隔膜94复合,第二复合片体通过第一隔膜92上的粘结剂与第二极片93固定在一起并得到电极组件2000。
电极组件2000中,第二复合片体、第二极片93和第二隔膜94依次叠设,而第二复合片体包括叠设的第一极片91和第一隔膜92,即电极组件2000中,第一极片91、第一隔膜92、第二极片93和第二隔膜94依次叠设;第一隔膜92、第二隔膜94的双面具有粘性,使得第一极片91、第一隔膜92、第二
极片93和第二隔膜94的相对位置被固定,不易相对移动。
本实施例中,使第三复合组件43能够将第二复合片体、第二极片93与第二隔膜94复合并得到电极组件2000,相较于将极片和隔膜在卷针10处复合的方案,该设置能够减少卷针10的功能需求,从而便于提高卷针10的卷绕速度,提高生产效率;同时还能够在卷绕之前完成对极片和隔膜的复合,以减少极片和隔膜在卷绕过程中出现移位的情况。
参考图12,在第五实施例中,卷绕设备1000还包括第三极片切断组件81和第四极片切断组件82。其中,第三极片切断组件81设置于第一放卷组件21与第二复合组件42之间,第三极片切断组件81用于切断第一极片91;第四极片切断组件82设置于第三放卷组件23与第三复合组件43之间,第四极片切断组件82用于切断第二极片93。
与第一极片切断组件61和第二极片切断组件62类似的,极片切断组件是指卷绕设备1000中用于切断极片的结构,其中,第三极片切断组件81、第四极片切断组件82均可以包括多种切断结构,例如沿直线往复运动的直线切刀、绕轴旋转的凸轮切刀等。直线切刀搭配定切刀使用,直线切刀能够朝向靠近或远离定切刀的方向运动。
本实施例中,使卷绕设备1000还包括第三极片切断组件81和第四极片切断组件82,以分别切断第一极片91和第二极片93,以使得第三极片切断组件81能够在第一极片91和第一隔膜92复合前先切断第一极片91,并使得第四极片切断组件82电极组件2000、第二极片93与第二隔膜94复合前先切断第二极片93,从而能够较为容易的使隔膜的长度大于极片的长度,从而满足电极组件2000的使用需求。
参考图12,在第五实施例中,卷绕设备1000还包括第二隔膜切断组件72,第二隔膜切断组件72设于第三复合组件43与卷绕机构400之间。
第二隔膜切断组件72可以包括多种切断结构,例如沿直线往复运动的直线切刀、绕轴旋转的凸轮切刀、激光切割结构等。
第二隔膜切断组件72设于第三复合组件43和卷绕机构400之间,在第二复合片体与第二极片93、第二隔膜94复合后,第二隔膜切断组件72能够同时切断第一隔膜92和第二隔膜94,以便于卷针10卷绕电极组件2000,并便于在收尾结构处进行收尾处理。
本实施例中,将第二隔膜切断组件72设于第三复合组件43与卷绕机构400之间,以使得第二隔膜切断组件72在电极组件2000、第二极片93与第二隔膜94复合之后切断隔膜,该设置能够较为容易的使隔膜的长度大于极片的长度,从而满足电极组件2000的使用需求。
参考图8,本申请第一实施例提供的卷绕设备1000包括第一放卷机构100、第二放卷机构200、复合机构300和卷绕机构400;第一放卷机构100包括第一放卷组件21、第二放卷组件22、第三放卷组件23;复合机构300包括第一复合组件41;卷绕机构400包括基座50和至少两个设于基座50上的卷针10;第二放卷机构200用于传送第二隔膜94并使第二隔膜94与第一复合片体在卷针10上汇合。
第一放卷组件21、第二放卷组件22、第三放卷组件23设于第一复合组件41的上游,卷绕机构400设于第一复合组件41的下游;第二放卷机构200设于卷绕机构400的上游,且第二放卷机构200位于第一复合组件41的下游。
卷绕设备1000还包括第一隔膜切断组件71,第一隔膜切断组件71位于基座50的一侧;在第一复合片体和第二隔膜94卷绕于卷针10上后,基座50带动卷针10向收尾结构处移动,此时第一隔膜切断组件71能够将第一隔膜92和第二隔膜94切断,以便于收尾结构对卷绕后的电极组件2000进行收尾处理。
卷绕设备1000的工作原理如下:
第一极片91、第二极片93和第一隔膜92放卷,第一极片91、第二极片93将第一隔膜92包在中间经过第一复合组件41而复合在一起并形成第一复合片体;接着,第一复合片体和第二隔膜94汇合并形成了叠合片体。
在第一个卷针10卷绕电极组件2000后,剩余收尾的第一隔膜92和第二隔膜94未入卷,此时卷针10随基座50运动至收尾结构处,第一隔膜切断组件71切断收尾的隔膜,以使得收尾结构对卷针10上的电极组件2000进行收尾处理,以隔膜并减少电极组件2000散开的情况;在卷针10上的电极组件2000被收尾处理并下料后,卷针10空置并能够随基座50运动至第一复合组件41的一侧,以进行下一次卷绕,如此循环往复。
参考图9,本申请第二实施例提供的卷绕设备1000包括第一放卷机构100、第二放卷机构200、复
合机构300和卷绕机构400;第一放卷机构100包括第一放卷组件21、第二放卷组件22、第三放卷组件23;复合机构300包括第一复合组件41;卷绕机构400包括基座50和至少两个设于基座50上的卷针10;第二放卷机构200用于传送第二隔膜94并使第二隔膜94与第一复合片体在卷针10上汇合。
第一放卷组件21、第二放卷组件22、第三放卷组件23设于第一复合组件41的上游,卷绕机构400设于第一复合组件41的下游;第二放卷机构200设于卷绕机构400的上游,且第二放卷机构200位于第一复合组件41的下游。
卷绕设备1000还包括第一隔膜切断组件71,第一隔膜切断组件71位于基座50的上游,以在叠合片体入卷之前切断第一隔膜92和第二隔膜94。
卷绕设备1000的工作原理如下:
第一极片91、第二极片93和第一隔膜92放卷,第一极片91、第二极片93将第一隔膜92包在中间经过第一复合组件41而复合在一起并形成第一复合片体;接着,第一复合片体和第二隔膜94汇合并形成了叠合片体;之后,叠合片体经过第一隔膜切断组件71并卷绕至卷针10上,在叠合片体的一端固定与卷针10或卷绕于卷针10后,第一隔膜切断组件71将第一隔膜92和第二隔膜94切断。
在第一个卷针10卷绕电极组件2000后,卷针10随基座50运动至收尾结构处,收尾结构对卷针10上的电极组件2000进行收尾处理,以隔膜并减少电极组件2000散开的情况;在卷针10上的电极组件2000被收尾处理并下料后,卷针10空置并能够随基座50运动至第一复合组件41的一侧,以进行下一次卷绕,如此循环往复。
参考图10,本申请第三实施例提供的卷绕设备1000包括第一放卷机构100、第二放卷机构200、复合机构300和卷绕机构400;第一放卷机构100包括第一放卷组件21、第二放卷组件22、第三放卷组件23;复合机构300包括第一复合组件41;卷绕机构400包括基座50和至少两个设于基座50上的卷针10;第二放卷机构200用于将第二隔膜94传送至卷针10上,此时,第一复合片体与第二隔膜94在卷针10上汇合。
第一放卷组件21、第二放卷组件22、第三放卷组件23设于第一复合组件41的上游,卷绕机构400设于第一复合组件41的下游;第二放卷机构200设于卷绕机构400的一侧。
卷绕设备1000还包括第一隔膜切断组件71,第一隔膜切断组件71位于基座50的一侧;在第一复合片体和第二隔膜94卷绕于卷针10上后,基座50带动卷针10向收尾结构处移动,此时第一隔膜切断组件71能够将第一隔膜92和第二隔膜94切断,以便于收尾结构对卷绕后的电极组件2000进行收尾处理。
卷绕设备1000的工作原理如下:
第一极片91、第二极片93和第一隔膜92放卷,第一极片91、第二极片93将第一隔膜92包在中间经过第一复合组件41而复合在一起并形成第一复合片体;接着,第一复合片体和第二隔膜94在卷针10处汇合并形成了叠合片体。
在第一个卷针10卷绕电极组件2000后,剩余收尾的第一隔膜92和第二隔膜94未入卷,此时卷针10随基座50运动至收尾结构处,第一隔膜切断组件71切断收尾的隔膜,以使得收尾结构对卷针10上的电极组件2000进行收尾处理,以隔膜并减少电极组件2000散开的情况;在卷针10上的电极组件2000被收尾处理并下料后,卷针10空置并能够随基座50运动至第一复合组件41的一侧,以进行下一次卷绕,如此循环往复。
参考图11,本申请第四实施例提供的卷绕设备1000包括第一放卷机构100、第二放卷机构200、复合机构300和卷绕机构400;第一放卷机构100包括第一放卷组件21、第二放卷组件22、第三放卷组件23;复合机构300包括第一复合组件41;卷绕机构400包括基座50和至少两个设于基座50上的卷针10;第二放卷机构200用于将第二隔膜94传送至卷针10上,此时,第一复合片体与第二隔膜94在卷针10上汇合。
第一放卷组件21、第二放卷组件22、第三放卷组件23设于第一复合组件41的上游,卷绕机构400设于第一复合组件41的下游;第二放卷机构200设于卷绕机构400的一侧。
卷绕设备1000还包括第一隔膜切断组件71,第一隔膜切断组件71有两个,一个第一隔膜切断组件71位于基座50的上游,以在叠合片体入卷之前切断第一隔膜92;另一个第一隔膜切断组件71位于第二放卷机构200与卷绕设备1000之间,以切断第二隔膜94。
卷绕设备1000的工作原理如下:
第一极片91、第二极片93和第一隔膜92放卷,第一极片91、第二极片93将第一隔膜92包在中间经过第一复合组件41而复合在一起并形成第一复合片体;接着,第一复合片体经一个第一隔膜切断组件71并被其切断第一隔膜92,第二隔膜94经另一个第一隔膜切断组件71并被切断,被切断后的第一复合片体和第二隔膜94在卷针10处汇合并形成了卷绕于卷针10的电极组件2000。
在第一个卷针10卷绕电极组件2000后,卷针10随基座50运动至收尾结构处,收尾结构对卷针10上的电极组件2000进行收尾处理,以隔膜并减少电极组件2000散开的情况;在卷针10上的电极组件2000被收尾处理并下料后,卷针10空置并能够随基座50运动至第一复合组件41的一侧,以进行下一次卷绕,如此循环往复。
参考图12,本申请第五实施例提供的卷绕设备1000包括第一放卷机构100、第二放卷机构200、复合机构300和卷绕机构400;第一放卷机构100包括第一放卷组件21、第二放卷组件22、第三放卷组件23;复合机构300包括第二复合组件42和第三复合组件43,第二复合组件42用于将第一极片91和第一隔膜92压合并复合形成第二复合片体,第三复合组件43用于将第二复合片体、第二极片93和第二隔膜94压合并复合形成电极组件2000;卷绕机构400包括基座50和至少两个设于基座50上的卷针10;第二放卷机构200用于将第二隔膜94传送至第三复合组件43。
第一放卷组件21、第二放卷组件22设于第二复合组件42的上游;第三放卷组件23和第二放卷机构200设于第二复合组件42的下游,并设于第三复合组件43的上游;卷绕机构400设于第三复合组件43的下游。
卷绕设备1000还包括第二隔膜切断组件72,第二隔膜切断组件72位于卷绕机构400的上游,并位于第三复合组件43的下游,以在电极组件2000入卷之前切断第一隔膜92和第二隔膜94。
卷绕设备1000的工作原理如下:
第一极片91和第一隔膜92放卷,第一极片91和第一隔膜92经过第二复合组件42而复合在一起并形成第二复合片体;接着,第二复合片体、第二极片93和第二隔膜94经第三复合组件43复合在一起并形成电极组件2000;之后,电极组件2000经过第二隔膜切断组件72,以切断第一隔膜92和第二隔膜94,被切断后的电极组件2000卷绕于卷针10。
在第一个卷针10卷绕电极组件2000后,卷针10随基座50运动至收尾结构处,收尾结构对卷针10上的电极组件2000进行收尾处理,以隔膜并减少电极组件2000散开的情况;在卷针10上的电极组件2000被收尾处理并下料后,卷针10空置并能够随基座50运动至第一复合组件41的一侧,以进行下一次卷绕,如此循环往复。
本申请第三方面的实施例提供了一种电池加工系统,包括如第二方面的一些实施例提供的卷绕设备1000。电池制造设备能够通过卷绕设备1000卷绕电极组件2000,具有较高的卷绕效率,进而具有较高的制造效率。
最后应说明的是:以上各实施例仅用以说明本申请的技术方案,而非对其限制;尽管参照前述各实施例对本申请进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分或者全部技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本申请各实施例技术方案的范围,其均应涵盖在本申请的权利要求和说明书的范围当中。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 (34)
- 一种卷针,其特征在于,包括:内针;至少两个外针,沿所述内针的周向环绕所述内针,所述外针沿所述内针的径向可活动地设于所述内针周侧;第一结构件,抵持于所述外针,所述第一结构件能够沿所述内针的轴向相对所述外针运动,以推动所述外针沿所述内针的径向远离所述内针。
- 根据权利要求1所述的卷针,其特征在于,所述卷针还包括设于所述卷针内的弹性件,所述弹性件的一端与所述外针相连,且所述弹性件的另一端能够与所述内针或另一所述外针相连,所述弹性件用于向所述外针施加指向所述内针方向的力。
- 根据权利要求1或2所述的卷针,其特征在于,所述第一结构件包括第一斜面,所述第一斜面相对所述内针的轴线倾斜并与所述内针的轴线之间形成第一夹角,所述第一斜面抵持于所述外针,以使得所述外针能够沿所述第一斜面相对所述第一结构件运动。
- 根据权利要求3所述的卷针,其特征在于,所述第一夹角的角度范围为40°~50°。
- 根据权利要求3或4所述的卷针,其特征在于,所述第一斜面的长度范围为3mm~5mm。
- 根据权利要求3-5中任一项所述的卷针,其特征在于,所述卷针还包括第二结构件,所述第二结构件与所述第一结构件分别沿所述内针的轴向设于所述内针的相对两端,所述第二结构件至少沿所述内针的轴向抵持于所述外针;所述第一结构件能够沿所述内针的轴向相对所述第二结构件运动。
- 根据权利要求6所述的卷针,其特征在于,所述第二结构件包括第二斜面,所述第二斜面抵持于所述外针,所述第二斜面与所述内针的轴线之间形成第二夹角;所述第二斜面所在的平面与所述第一斜面所在的平面相交处沿所述内针的径向的投影处于所述内针中部区域。
- 根据权利要求7所述的卷针,其特征在于,所述第二夹角与所述第一夹角相等。
- 根据权利要求7或8所述的卷针,其特征在于,所述外针上设有两个第三结构件,两个所述第三结构件沿所述内针的轴向设于所述外针的两端,两个所述第三结构件分别抵持于所述第一结构件和所述第二结构件。
- 根据权利要求9所述的卷针,其特征在于,两个所述第三结构件均包括第三斜面,两个所述第三斜面中的一个平行于相邻的所述第一斜面并抵持于所述第一斜面,两个所述第三斜面中的另一个平行于相邻的所述第二斜面并抵持于所述第二斜面。
- 根据权利要求1-10中任一项所述的卷针,其特征在于,所述第一结构件固定连接于所述内针;所述卷针还包括驱动组件,所述驱动组件用于驱动所述内针沿所述内针的轴向运动,以通过所述第一结构件推动所述外针沿所述内针的径向远离所述内针。
- 根据权利要求1-11中任一项所述的卷针,其特征在于,所述外针上开设有进气孔;至少两个所述外针能够围成气流空间,所述气流空间与所述进气孔相连通,且所述气流空间用于与抽气装置相连通,以在所述气流空间中形成负压。
- 根据权利要求12所述的卷针,其特征在于,所述进气孔有至少两个,且至少两个进气孔均匀的排布于所述外针上。
- 根据权利要求13所述的卷针,其特征在于,所述进气孔的孔径范围为1mm~2mm,相邻两个所述进气孔之间的距离为2mm~4mm。
- 根据权利要求12-14中任一项所述的卷针,其特征在于,所述负压的范围为-50KPa~-75KPa。
- 根据权利要求12-15中任一项所述的卷针,其特征在于,所述内针上开设有与所述气流空间相连通的气流通道,所述气流通道的一端用于与所述抽气装置相连通,以将所述气流空间中的气体经所述气流通道抽出至所述卷针之外。
- 根据权利要求12所述的卷针,其特征在于,所述外针包括中间部,所述中间部沿所述内针轴向的两端均连接有端部,所述端部抵持于所述第一结构件;所述进气孔至少开设于所述中间部上,所述气流空间至少形成于不同所述外针的所述中间部之间。
- 根据权利要求17所述的卷针,其特征在于,所述中间部的厚度范围为5mm~8mm。
- 根据权利要求17或18所述的卷针,其特征在于,所述端部可拆卸地连接于所述中间部。
- 根据权利要求1-19中任一项所述的卷针,其特征在于,所述外针的周侧面上还开设有下料槽;在所述内针的轴向上,所述下料槽的至少一端与所述卷针之外的空间相连通。
- 一种卷绕设备,其特征在于,包括如权利要求1-20中任一项所述的卷针。
- 根据权利要求21所述的卷绕设备,其特征在于,包括:第一放卷机构,用于放卷第一极片、第一隔膜和第二极片;第二放卷机构,用于放卷第二隔膜;复合机构,至少用于压合所述第一极片和所述第一隔膜;卷绕机构,设于所述复合机构的下游,所述卷绕机构用于将所述第一极片、所述第一隔膜、所述第二极片、所述第二隔膜卷绕形成电极组件。
- 根据权利要求22所述的卷绕设备,其特征在于,所述卷绕机构包括基座以及至少所述两个卷针,所述卷针转动连接于所述基座上,所述基座用于带动不同的所述卷针依次交替地运动至所述复合机构的一侧。
- 根据权利要求22所述的卷绕设备,其特征在于,所述第一放卷机构包括:第一放卷组件,用于放卷所述第一极片;第二放卷组件,用于放卷所述第一隔膜;第三放卷组件,用于放卷所述第二极片;所述复合机构包括第一复合组件,所述第一复合组件用于将所述第一极片、所述第一隔膜、所述第二极片压合形成第一复合片体。
- 根据权利要求24所述的卷绕设备,其特征在于,所述卷绕设备还包括:第一极片切断组件,设置于所述第一放卷组件与所述第一复合组件之间,所述第一极片切断组件用于切断所述第一极片;第二极片切断组件,设置于所述第三放卷组件与所述第一复合组件之间,所述第二极片切断组件用于切断所述第二极片。
- 根据权利要求24所述的卷绕设备,其特征在于,所述第二放卷机构设于所述第一复合组件和所述卷绕机构之间。
- 根据权利要求26所述的卷绕设备,其特征在于,所述第二放卷机构包括隔膜放卷组件和传送辊,所述隔膜放卷组件用于放卷所述第二隔膜,所述传送辊用于供所述第二隔膜与所述第一复合片体汇合以形成叠合片体,并将所述叠合片体传送至所述卷绕机构。
- 根据权利要求24-27中任一项所述的卷绕设备,其特征在于,所述第二放卷机构设于所述卷绕机构的一侧,所述第二放卷机构用于将所述第二隔膜传送至所述卷针,以使所述第一复合片体与所述第二隔膜在所述卷针上汇合。
- 根据权利要求24-28中任一项所述的卷绕设备,其特征在于,所述卷绕设备还包括第一隔膜切断组件,所述第一隔膜切断组件与所述卷绕机构相邻设置且用于切断所述第一隔膜和/或第二隔膜。
- 根据权利要求22所述的卷绕设备,其特征在于,所述第一放卷机构包括:第一放卷组件,用于放卷所述第一极片;第二放卷组件,用于放卷所述第一隔膜;所述复合机构包括第二复合组件,所述第二复合组件用于将所述第一极片、所述第一隔膜压合形成第二复合片体。
- 根据权利要求30所述的卷绕设备,其特征在于,所述第一放卷机构还包括第三放卷组件,用于放卷所述第二极片;所述复合机构还包括第三复合组件,所述第三复合组件用于将所述第二复合片体、所述第二极片与所述第二隔膜压合形成电极组件。
- 根据权利要求31所述的卷绕设备,其特征在于,所述卷绕设备还包括:第三极片切断组件,设置于所述第一放卷组件与所述第二复合组件之间,所述第三极片切断组件用于切断所述第一极片;第四极片切断组件,设置于所述第三放卷组件与所述第三复合组件之间,所述第四极片切断组件用于切断所述第二极片。
- 根据权利要求31或32所述的卷绕设备,其特征在于,所述卷绕设备还包括第二隔膜切断组件,所述第二隔膜切断组件设于所述第三复合组件与所述卷绕机构之间。
- 一种电池加工系统,其特征在于,包括如权利要求21-33中任一项所述的卷绕设备。
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410043912 | 2024-01-11 | ||
| CN202420072183 | 2024-01-11 | ||
| CN202420072183.7 | 2024-01-11 | ||
| CN202410043912.0 | 2024-01-11 | ||
| CN202420969109.5 | 2024-05-07 | ||
| CN202420969109.5U CN223006817U (zh) | 2024-05-07 | 2024-05-07 | 卷针及卷绕设备 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2025148355A1 true WO2025148355A1 (zh) | 2025-07-17 |
Family
ID=96386301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2024/116112 Pending WO2025148355A1 (zh) | 2024-01-11 | 2024-08-30 | 卷针、卷绕设备及电池加工系统 |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2025148355A1 (zh) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090228004A1 (en) * | 2006-07-28 | 2009-09-10 | Kabushiki Kaisha Top | Electrode needle device with temperature sensor |
| CN113224367A (zh) * | 2021-03-31 | 2021-08-06 | 广东利元亨智能装备股份有限公司 | 一种卷针外周长调节装置、卷绕机及卷针外周长调节方法 |
| CN113241464A (zh) * | 2021-03-31 | 2021-08-10 | 广东利元亨智能装备股份有限公司 | 一种外周长可调节卷针、卷绕机及卷针外周长调节方法 |
| CN216750002U (zh) * | 2021-11-05 | 2022-06-14 | 无锡先导智能装备股份有限公司 | 卷针机构及卷绕机 |
| CN116314999A (zh) * | 2021-12-21 | 2023-06-23 | 宁德时代新能源科技股份有限公司 | 电极组件的制造设备以及制造方法 |
| CN219246762U (zh) * | 2022-12-30 | 2023-06-23 | 珠海华冠科技股份有限公司 | 一种卷针及卷绕装置 |
| CN117199551A (zh) * | 2023-09-26 | 2023-12-08 | 三一技术装备有限公司 | 一种卷针及卷绕装置 |
-
2024
- 2024-08-30 WO PCT/CN2024/116112 patent/WO2025148355A1/zh active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090228004A1 (en) * | 2006-07-28 | 2009-09-10 | Kabushiki Kaisha Top | Electrode needle device with temperature sensor |
| CN113224367A (zh) * | 2021-03-31 | 2021-08-06 | 广东利元亨智能装备股份有限公司 | 一种卷针外周长调节装置、卷绕机及卷针外周长调节方法 |
| CN113241464A (zh) * | 2021-03-31 | 2021-08-10 | 广东利元亨智能装备股份有限公司 | 一种外周长可调节卷针、卷绕机及卷针外周长调节方法 |
| CN216750002U (zh) * | 2021-11-05 | 2022-06-14 | 无锡先导智能装备股份有限公司 | 卷针机构及卷绕机 |
| CN116314999A (zh) * | 2021-12-21 | 2023-06-23 | 宁德时代新能源科技股份有限公司 | 电极组件的制造设备以及制造方法 |
| CN219246762U (zh) * | 2022-12-30 | 2023-06-23 | 珠海华冠科技股份有限公司 | 一种卷针及卷绕装置 |
| CN117199551A (zh) * | 2023-09-26 | 2023-12-08 | 三一技术装备有限公司 | 一种卷针及卷绕装置 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115004428B (zh) | 制备电极组件的设备及电极组件的制备方法 | |
| WO2022083499A1 (zh) | 极耳换卷装置及卷绕设备 | |
| CN212161995U (zh) | 制备电极组件的设备 | |
| US20240234785A1 (en) | Cell winding device and method | |
| US20230335778A1 (en) | Winding method, winding machine, electrode assembly, and battery cell | |
| US12187563B2 (en) | Tape removal apparatus | |
| CN114284571A (zh) | 卷绕装置及卷绕方法 | |
| WO2025213554A1 (zh) | 卷绕装置及电池加工设备 | |
| WO2025148355A1 (zh) | 卷针、卷绕设备及电池加工系统 | |
| CN120300248A (zh) | 卷绕设备及电池制造设备 | |
| CN118213632B (zh) | 复合装置、卷绕设备以及复合极片的成型方法 | |
| CN219521199U (zh) | 电芯生产线 | |
| CN118248960A (zh) | 叠片电池加工装置及加工方法 | |
| US12234112B2 (en) | Tape attachment apparatus | |
| CN217667198U (zh) | 一种极片裁切输送装置、设备及叠片机 | |
| CN115036556A (zh) | 一种叠片装置及叠片生产线 | |
| CN223566639U (zh) | 卷绕设备 | |
| CN223006817U (zh) | 卷针及卷绕设备 | |
| CN220784052U (zh) | 一种复合贴膜裁切装置 | |
| WO2023174424A1 (zh) | 电芯极片入料装置、电芯制造设备和电芯极片入料方法 | |
| WO2025145748A1 (zh) | 卷绕设备及卷绕方法 | |
| CN222947779U (zh) | 一种料卷切换装置及卷绕设备 | |
| CN222826451U (zh) | 卷绕设备 | |
| CN221379471U (zh) | 卷绕机构及生产设备 | |
| CN219321416U (zh) | 电芯叠片系统 |
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: 24916407 Country of ref document: EP Kind code of ref document: A1 |