Winding apparatus, battery processing apparatus, and battery production line

Abstract

The present application is suitable for the technical field of batteries. Provided are a winding apparatus (100), a battery processing apparatus (1000), and a battery production line, the battery production line comprising the battery processing apparatus (1000) or the winding apparatus (100). The battery processing apparatus (1000) comprises the winding apparatus (100). The winding apparatus (100) comprises a compositing device (10) and a winding device (20). The compositing device (10) is used for sequentially laminating and compositing a first separator (a), a first electrode sheet (b), a second separator (c) and a second electrode sheet (d) to form a composite unit (n), and the winding device (20) is used for winding the composite unit (n) to form an electrode assembly. The present application does not need intensively compositing and winding the first separator (a), the first electrode sheet (b), the second separator (c) and the second electrode sheet (d) at a winding needle of the winding device (20), thus improving layout rationality of the winding apparatus (100), and facilitating layout of various functional devices.

Description

Winding equipment, battery processing equipment and battery production lines

[0001] Cross-references

[0002] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of the People's Republic of China on September 28, 2023, with application number 202322664538.X and application name "Winding equipment, battery processing equipment and battery production line", the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of battery technology, and in particular to a winding device, a battery processing device and a battery production line. Background Art

[0004] In the related art, the positive electrode sheet, the negative electrode sheet and the diaphragm are compounded at the winding needle during the winding process, so that the winding and unwinding device for winding the positive electrode sheet, the winding and unwinding device for winding the negative electrode sheet and the winding and unwinding device for winding the diaphragm are all concentrated near the winding needle, so that the space between the multiple winding and unwinding devices and the winding needle is very narrow, that is, the layout rationality of the entire winding equipment is poor, which is not conducive to the layout of functional devices such as the detection device for detecting the electrode assembly, and thus it is difficult to improve the quality of the electrode assembly.

[0005] Summary of the Invention

[0006] In view of the above problems, the purpose of the embodiments of the present application is to provide a winding device, a battery processing device and a battery production line, which can improve the technical problem of poor layout rationality of the winding device.

[0007] The technical solution adopted in the embodiment of this application is:

[0008] In a first aspect, an embodiment of the present application provides a winding device, comprising:

[0009] A composite device, used for sequentially stacking the first diaphragm, the first pole piece, the second diaphragm and the second pole piece to form a composite component;

[0010] The winding device is used to wind the composite member to form an electrode assembly.

[0011] The winding device provided in the embodiment of the present application, by providing a compounding device and a winding device, allows the first diaphragm, the first electrode sheet, the second diaphragm, and the second electrode sheet to be stacked and compounded in sequence by the compounding device to form a composite member, which is then wound by the winding device to form an electrode assembly. In this way, the compounding operation of the first diaphragm, the first electrode sheet, the second diaphragm, and the second electrode sheet is set separately from the winding operation, and there is no need to concentrate the compounding and winding at the winding needle of the winding device. As a result, there can be a large space between each rewinding and unwinding device for rewinding and unwinding the first diaphragm, the first electrode sheet, the second diaphragm, and the second electrode sheet and the winding device. That is, the rationality of the layout of the winding device can be improved, which is beneficial to the layout of various functional devices, and thus helps to improve the quality of the electrode assembly.

[0012] In some embodiments, the winding device further includes a first buffer device, which is disposed between the compounding device and the winding device and is used to buffer the composite part.

[0013] In this way, the winding device can perform the winding operation without stopping the machine, thereby improving the winding efficiency of the winding equipment and improving the production efficiency of the electrode assembly.

[0014] In some embodiments, the first cache device includes:

[0015] a plurality of first fixed pulleys;

[0016] The first movable pulley and the first fixed pulley are used to alternately pass around the composite member, and the first movable pulley can move relative to the first fixed pulley to buffer the composite member.

[0017] By providing a first fixed pulley and a first movable pulley capable of moving relative to the first fixed pulley, and the first fixed pulley and the first movable pulley can alternately bypass the composite member, a buffering effect can be achieved for the composite member.

[0018] In some embodiments, the winding device further includes a first detection device, which is disposed between the compounding device and the winding device and is used to detect the composite part.

[0019] By setting a first detection device between the composite device and the winding device, the composite part can be inspected, so that the quality of the composite part formed by stacking the first diaphragm, the first electrode piece, the second diaphragm and the second electrode piece in sequence can be obtained, which helps to improve the quality of the electrode assembly.

[0020] In some embodiments, the composite device includes a first composite mechanism and a second composite mechanism, the first composite mechanism is used to stack and composite at least two of the first diaphragm, the first electrode piece, the second diaphragm and the second electrode piece in sequence to form a composite component, and the second composite mechanism is used to stack and composite the remaining of the first diaphragm, the first electrode piece, the second diaphragm and the second electrode piece with the composite component to form a composite component.

[0021] In this way, the composite operation of the first diaphragm, the first electrode piece, the second diaphragm and the second electrode piece can be more strictly controlled, which helps to improve the quality of the composite part and further helps to improve the quality of the electrode assembly.

[0022] In some embodiments, the first composite mechanism is used to sequentially stack and composite the first diaphragm, the first electrode piece, and the second diaphragm to form a composite component, and the second composite mechanism is used to stack and composite the composite component and the second electrode piece to form a composite component;

[0023] Alternatively, the first composite mechanism is used to laminate and composite the first diaphragm and the first pole piece to form a composite component, and the second composite mechanism is used to laminate and composite the composite component, the second diaphragm and the second pole piece in sequence to form a composite component;

[0024] Alternatively, the first composite mechanism is used to stack and composite the first electrode piece and the second diaphragm to form a composite component, and the second composite mechanism is used to stack and composite the first diaphragm, the composite component and the second electrode piece in sequence to form a composite component.

[0025] By adopting the above technical solution, the first electrode piece can be first compounded by the first compounding mechanism, and then the second electrode piece can be compounded by the second compounding mechanism, that is, the first electrode piece and the second electrode piece are compounded separately. In this way, the compounding quality of the first electrode piece and the second electrode piece can be controlled separately, which can help improve the quality of the composite part and thus improve the quality of the electrode assembly.

[0026] In some embodiments, the winding device further includes a second buffer device, which is disposed between the first compound mechanism and the second compound mechanism and is used to buffer the compound components.

[0027] In this way, the winding efficiency of the winding equipment can be improved, thereby improving the production efficiency of the electrode assembly.

[0028] In some embodiments, the second cache device includes:

[0029] a plurality of second fixed pulleys;

[0030] The second movable pulley and the second fixed pulley are used to alternately bypass the composite component, and the second movable pulley can move relative to the second fixed pulley to buffer the composite component.

[0031] By providing a second fixed pulley and a second movable pulley capable of moving relative to the second fixed pulley, and the second fixed pulley and the second movable pulley can alternately bypass the composite component, a buffering effect can be achieved for the composite component.

[0032] In some embodiments, the winding device further includes a second detection device, which is disposed between the first compounding mechanism and the second compounding mechanism and is used to detect the compound components.

[0033] In this way, the quality of the composite part can be strictly controlled, which can help improve the quality of the electrode assembly.

[0034] In some embodiments, the first composite mechanism includes a first composite roller and a second composite roller rotating in opposite directions, the first composite roller and the second composite roller being used to cooperate in rolling to composite at least two of the first diaphragm, the first electrode piece, the second diaphragm, and the second electrode piece;

[0035] And / or, the second composite mechanism includes a third composite roller and a fourth composite roller with opposite rotation directions, and the third composite roller and the fourth composite roller are used to cooperate in rolling to composite the first diaphragm, the first electrode piece, the second diaphragm and the remaining second electrode piece with the composite component.

[0036] With such an arrangement, the composite effect of the first composite mechanism can be achieved, and / or the composite effect of the second composite mechanism can be achieved.

[0037] In some embodiments, the winding device comprises:

[0038] The turret is provided with a plurality of workstations distributed in sequence along the circumference;

[0039] The winding needle is set on the turret and can rotate to multiple workstations in sequence with the turret.

[0040] In this way, the composite part can be wound to form an electrode assembly after passing through multiple stations in sequence, thereby ensuring the molding quality of the electrode assembly to a certain extent.

[0041] In some embodiments, there are multiple winding needles, and the multiple winding needles are sequentially arranged on the turret along the circumferential direction, and the multiple winding needles can be located at multiple workstations respectively.

[0042] In this way, the winding efficiency of the winding device can be improved, thereby improving the production efficiency of the electrode assembly.

[0043] In some embodiments, the multiple workstations include a winding workstation and a gluing workstation. The winding needle in the winding workstation is used to wind the composite component, and the winding needle in the gluing workstation is used to glue the electrode assembly.

[0044] In this way, the problem of the electrode assembly being scattered can be improved, thereby ensuring the quality of the electrode assembly to a certain extent.

[0045] In some embodiments, the multiple workstations also include a finishing workstation, and the winding workstation, finishing workstation and gluing workstation are distributed in sequence along the circumference. The winding needle is used in the finishing workstation to finish the electrode assembly.

[0046] By adding a finishing station, the electrode assembly can be finished, which is convenient for the glue-sticking station of the electrode assembly. The problem of the electrode assembly being scattered can be improved, so as to ensure the quality of the electrode assembly to a certain extent.

[0047] In some embodiments, the multiple workstations also include a blanking station, and the winding station, the gluing station and the blanking station are distributed in sequence along the circumference, and the winding needle is used at the blanking station to blank the electrode assembly.

[0048] By adding a blanking station, the electrode assembly can be blanked at the blanking station without affecting the work of other winding needles.

[0049] In a second aspect, an embodiment of the present application provides a battery processing device, including a winding device.

[0050] The battery processing equipment provided in the embodiments of the present application, by adopting the winding equipment involved in the above embodiments, can improve the layout rationality of the winding equipment, thereby improving the layout rationality of the battery processing equipment, and is beneficial to the layout of functional devices such as the first cache device, the second cache device, the first detection device, and the second detection device, thereby helping to improve the quality of the electrode assembly, thereby improving the quality of the battery.

[0051] In some embodiments, the battery processing equipment further comprises:

[0052] Assembly equipment for assembling electrode assemblies to form battery cells;

[0053] Stacking equipment is used to stack battery cells to form batteries.

[0054] With such arrangement, a battery can be obtained by processing.

[0055] In a third aspect, an embodiment of the present application provides a battery production line, including winding equipment or battery processing equipment.

[0056] The battery production line provided in the embodiments of the present application, by adopting the winding equipment or battery processing equipment involved in the above embodiments, can improve the rationality of the layout of the winding equipment, thereby improving the rationality of the layout of the battery processing equipment, and is beneficial to the layout of functional devices such as the first cache device, the second cache device, the first detection device, and the second detection device, thereby helping to improve the quality of the electrode assembly, thereby improving the quality of the battery.

[0057] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or exemplary technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0059] FIG1 is a schematic diagram of battery processing equipment provided by some embodiments of the present application;

[0060] FIG2 is a schematic diagram of a winding device provided in some embodiments of the present application;

[0061] FIG3 is a partial schematic diagram of the winding device provided in FIG2 ;

[0062] FIG4 is a schematic diagram of a winding device of the winding equipment provided in FIG2 .

[0063] Among them, the reference numerals in the figure are: 1000-battery processing equipment; 100-winding equipment; 200-assembly equipment; 300-stacking equipment; 10-combining device; 11-first composite mechanism; 1101-first composite gap; 111-first composite roller; 112-second composite roller; 12-second composite mechanism; 1201-second composite gap; 121-third composite roller; 122-fourth composite roller; 20-winding device; 201-workstation; 201a-winding station; 201b-finishing station; 201c-gluing station; 201d-unloading station; 201e-retraction station; 21-turret; 22-winding needle; 23-finishing roller; 24-gluing roller; 25-unloading mechanism; 30-first buffer device; 31-first fixed Pulley; 32-first movable pulley; 40-first detection device; 50-second buffer device; 51-second fixed pulley; 52-second movable pulley; 60-second detection device; 70a-first rewinding and unwinding device; 70b-second rewinding and unwinding device; 70c-third rewinding and unwinding device; 70d-fourth rewinding and unwinding device; 80a-first cutting device; 80b-second cutting device; 80c-third cutting device; a-first diaphragm; b-first pole piece; c-second diaphragm; d-second pole piece; m-composite component; n-composite component; X-first direction; Y-second direction. DETAILED DESCRIPTION

[0064] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0065] In the description of this application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0066] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or to implicitly indicate the quantity of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0067] In the description of this application, "a plurality of" means more than two, and unless otherwise specifically defined, "more than two" includes two. Accordingly, "a plurality of groups" means more than two groups, including two groups.

[0068] In the description of this application, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0069] In the description of this application, the term "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists, A and B exist at the same time, and B exists. In addition, in this application, the character " / " generally indicates that the related objects are in an "or" relationship.

[0070] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and components may be substituted with equivalents without departing from the scope of the present application. In particular, the various technical features described in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

[0071] In related technologies, a battery cell includes a housing and an electrode assembly, which is housed within the housing. For wound-type electrode assemblies, the electrode assembly is primarily composed of a wound positive electrode sheet, a negative electrode sheet, and a separator, with the separator interposed between the positive and negative electrode sheets to provide insulation between them.

[0072] Among them, the positive electrode sheet, negative electrode sheet and separator are wound by a winding needle.

[0073] In some cases, the positive electrode sheet, negative electrode sheet, and separator are combined at the winding needle during the winding process. Specifically, the positive electrode sheet, negative electrode sheet, and separator are pulled separately to the winding needle for stacking at the winding needle. As the winding needle rotates, the positive electrode sheet, negative electrode sheet, and separator are wound along with the winding needle, and the positive electrode sheet, negative electrode sheet, and separator at the winding needle are combined during the winding process.

[0074] In this way, the winding and unwinding device for winding and unwinding the positive electrode sheet, the winding and unwinding device for winding and unwinding the negative electrode sheet, and the winding and unwinding device for winding and unwinding the diaphragm are all concentrated near the winding needle, making the space between the multiple winding and unwinding devices and the winding needle very narrow, that is, the layout rationality of the entire winding equipment is poor, which is not conducive to the layout of functional devices such as the detection device for detecting the electrode assembly, and thus it is difficult to improve the quality of the electrode assembly.

[0075] Based on the above considerations, in order to improve the problem of poor layout rationality of the winding equipment, the embodiments of the present application provide a winding equipment, battery processing equipment and battery production line. By setting a compounding device and a winding device, the first diaphragm, the first electrode sheet, the second diaphragm and the second electrode sheet are sequentially stacked and compounded by the compounding device to form a composite part, and then wound by the winding device to form an electrode assembly. In this way, the compounding operation of the first diaphragm, the first electrode sheet, the second diaphragm and the second electrode sheet are set separately from the winding operation, and there is no need to concentrate the compounding and winding at the winding needle of the winding device, so that there can be a large space between each rewinding and unwinding device for rewinding and unwinding the first diaphragm, the first electrode sheet, the second diaphragm and the second electrode sheet and the winding device, that is, the rationality of the layout of the winding equipment can be improved, which is beneficial to the layout of each functional device, and thus helps to improve the quality of the electrode assembly.

[0076] The battery cells referred to in the embodiments of this application are the smallest units that store and output electrical energy. These cells can be secondary batteries or primary batteries. They can be, but are not limited to, metal batteries, lithium-sulfur batteries, sodium-ion batteries, or magnesium-ion batteries. They can be cylindrical, flat, rectangular, or other shapes.

[0077] The battery cell includes a shell and an electrode assembly disposed in the shell. The number of electrode assemblies in the battery cell can be one or more.

[0078] The electrode assembly is the component where the electrochemical reaction occurs in the battery cell. Among them, the electrode assembly is mainly formed by winding the positive electrode sheet and the negative electrode sheet, and a separator is provided between the positive electrode sheet and the negative electrode sheet. The separator refers to a component with insulating properties, which is used to achieve the insulation effect between the positive electrode sheet and the negative electrode sheet. The parts of the positive electrode sheet and the negative electrode sheet with active materials constitute the main body of the electrode assembly, and the parts of the positive electrode sheet and the negative electrode sheet without active materials each constitute the tab. The tab of the positive electrode sheet is the positive tab, and the tab of the negative electrode sheet is the negative tab. The positive tab and the negative tab can be located together at one end of the main body or respectively at opposite ends of the main body.

[0079] The battery involved in the embodiments of the present application can be a single physical module comprising one or more battery cells to provide higher voltage and capacity. Where there are multiple battery cells, the multiple battery cells are connected in series, in parallel, or in hybrid mode via a busbar. Hybrid mode refers to multiple battery cells being connected in both series and parallel mode.

[0080] The battery processing equipment involved in the embodiments of the present application is mainly used to process batteries.

[0081] Please refer to Figures 1 and 2 . Figure 1 is a schematic diagram of a battery processing apparatus 1000 provided in some embodiments of the present application, and Figure 2 is a schematic diagram of a winding apparatus 100 provided in some embodiments of the present application. The battery processing apparatus 1000 includes the winding apparatus 100, which is used to wind a first separator a, a first electrode sheet b, a second separator c, and a second electrode sheet d to form an electrode assembly.

[0082] In some embodiments, as shown in FIG. 1 , the battery processing equipment 1000 may further include an assembly device 200 , which is used to assemble an electrode assembly, a housing, etc. to obtain a battery cell.

[0083] In some embodiments, as shown in FIG. 1 , the battery processing equipment 1000 may further include a stacking device 300 , which is configured to stack a plurality of battery cells to form a battery.

[0084] In some embodiments, the battery processing equipment 1000 may further include equipment for making the first pole piece b, equipment for making the second pole piece d, equipment for making the first diaphragm a and the second diaphragm c, etc.

[0085] Referring to Figures 1 and 2 , the winding apparatus 100 provided in this embodiment includes a composite device 10 and a winding device 20. The composite device 10 is used to sequentially stack a first separator a, a first electrode sheet b, a second separator c, and a second electrode sheet d to form a composite element n. The winding device 20 is used to wind the composite element n to form an electrode assembly.

[0086] The composite device 10 is a device for sequentially stacking and composite the first diaphragm a, the first pole piece b, the second diaphragm c, and the second pole piece d to form a composite member n.

[0087] The winding device 20 is a device for winding the composite member n to form an electrode assembly.

[0088] The first diaphragm a and the second diaphragm c are both diaphragms.

[0089] The first electrode piece b and the second electrode piece d have different polarities, wherein the first electrode piece b is a positive electrode piece and the second electrode piece d is a negative electrode piece; or the first electrode piece b is a negative electrode piece and the second electrode piece d is a positive electrode piece.

[0090] It should be noted that the first pole piece b, the second pole piece d, the first diaphragm a, and the second diaphragm c are all sheet-like structures and have a thickness. The first diaphragm a, the first pole piece b, the second diaphragm c, and the second pole piece d are stacked in sequence, which means that the first diaphragm a, the first pole piece b, the second diaphragm c, and the second pole piece d are stacked in sequence along the thickness direction of the first pole piece b, and in this case, the thickness directions of the first diaphragm a, the first pole piece b, the second diaphragm c, and the second pole piece d are parallel.

[0091] The first diaphragm a, the first pole piece b, the second diaphragm c, and the second pole piece d are sequentially stacked and fixed together to form a composite component n. The composite component n is a component formed by the first diaphragm a, the first pole piece b, the second diaphragm c, and the second pole piece d being sequentially stacked and fixed together along the thickness direction of the first pole piece b.

[0092] In the composite member n, the second diaphragm c is disposed between the first pole piece b and the second pole piece d to achieve insulation between the first pole piece b and the second pole piece d.

[0093] In the electrode assembly formed by winding the composite member n, the first diaphragm a is disposed between the first pole piece b and the second pole piece d to achieve insulation between the first pole piece b and the second pole piece d.

[0094] The winding apparatus 100 provided in an embodiment of the present application, by providing a combining device 10 and a winding device 20, allows the first separator a, the first electrode piece b, the second separator c, and the second electrode piece d to be sequentially stacked and combined by the combining device 10 to form a composite member n, which is then wound by the winding device 20 to form an electrode assembly. In this way, the combining and winding operations of the first separator a, the first electrode piece b, the second separator c, and the second electrode piece d are performed separately, rather than being concentrated at the winding needle 22 of the winding device 20. This allows for a larger space between each of the winding and unwinding devices used to rewind and unwind the first separator a, the first electrode piece b, the second separator c, and the second electrode piece d and the winding device 20. This improves the layout rationality of the winding apparatus 100, facilitates the layout of various functional devices, and thus contributes to improved electrode assembly quality.

[0095] In some embodiments, referring to FIG2 , the winding apparatus 100 further includes a first reeling and unreeling device 70a, a second reeling and unreeling device 70b, a third reeling and unreeling device 70c, and a fourth reeling and unreeling device 70d. The first reeling and unreeling device 70a is used to reel in and out the first electrode piece b, the second reeling and unreeling device 70b is used to reel in and out the second electrode piece d, the third reeling and unreeling device 70c is used to reel in and out the first diaphragm a, and the fourth reeling and unreeling device 70d is used to reel in and out the second diaphragm c. The reeling and unreeling devices may be the first reeling and unreeling device 70a, the second reeling and unreeling device 70b, the third reeling and unreeling device 70c, or the fourth reeling and unreeling device 70d.

[0096] Based on the above structure, the first electrode sheet b can be pulled from the first reel-and-wind device 70a to the composite device 10, the second electrode sheet d can be pulled from the second reel-and-wind device 70b to the composite device 10, the first separator a can be pulled from the third reel-and-wind device 70c to the composite device 10, and the second separator c can be pulled from the fourth reel-and-wind device 70d to the composite device 10. After the composite device 10 stacks the first separator a, the first electrode sheet b, the second separator c, and the second electrode sheet d in sequence to form a composite element n, the composite element n is pulled from the composite device 10 to the winding device 20 and wound by the winding device 20 to form an electrode assembly.

[0097] In some embodiments, referring to FIG. 2 , the winding device 100 further includes a first buffer device 30 . The first buffer device 30 is disposed between the compounding device 10 and the winding device 20 and is used to buffer the composite part n.

[0098] The first buffer device 30 is a device for buffering the composite component n.

[0099] The first buffer device 30 is positioned between the assembling device 10 and the winding device 20 to buffer the composite element n. This allows the first buffer device 30 to buffer the composite element n located between the assembling device 10 and the winding device 20. This allows the first electrode sheet b and the second electrode sheet d to stop running. Specifically, the second reeling device 70b and the fourth reeling device 70d can stop reeling and unreeling the first electrode sheet b and the second electrode sheet d, respectively, and cut the first electrode sheet b and the second electrode sheet d. This, to a certain extent, ensures the cutting operation of the first electrode sheet b and the second electrode sheet d. Furthermore, during the stopping and cutting of the first electrode sheet b and the second electrode sheet d, the first buffer device 30 buffers the composite element n located between the assembling device 10 and the winding device 20, allowing the winding device 20 to continue winding the composite element n without stopping. This allows the winding device 20 to continue winding without stopping, thereby improving the winding efficiency of the winding apparatus 100 and thus the production efficiency of the electrode assembly.

[0100] It should be noted that, by providing a compounding device 10 and a winding device 20, the compounding operation and the winding operation of the first diaphragm a, the first electrode piece b, the second diaphragm c and the second electrode piece d are separately provided, without the need to concentrate the compounding and winding at the winding needle 22 of the winding device 20, so that there can be a larger space between each winding and unwinding device for winding and unwinding the first diaphragm a, the first electrode piece b, the second diaphragm c and the second electrode piece d and the winding device 20, that is, the rationality of the layout of the winding equipment 100 can be improved, which is conducive to the layout of the above-mentioned first cache device 30, so as to improve the production efficiency of the electrode assembly.

[0101] In some embodiments, please refer to Figures 2 and 3 together. Figure 3 is a partial schematic diagram of a winding device 100 provided in some embodiments of the present application. The winding device 100 may further include a first cutting device 80a and a second cutting device 80b. The first cutting device 80a is used to cut the first pole piece b before the composite is formed into the composite component n, and the second cutting device 80b is used to cut the second pole piece d before the composite is formed into the composite component n.

[0102] In some embodiments, referring to FIG. 2 , the winding device 100 may further include a third cutter device 80 c , which is disposed between the compounding device 10 and the winding device 20 and is used to cut the first diaphragm a and the second diaphragm c.

[0103] In some embodiments, referring to FIG. 2 , the third cutter device 80 c is disposed between the first buffer device 30 and the winding device 20 .

[0104] In some embodiments, referring to both Figures 2 and 3 , the first buffer device 30 includes a first movable pulley 32 and a plurality of first fixed pulleys 31. The first movable pulleys 32 and the first fixed pulleys 31 are configured to alternately pass around the composite member n, and the first movable pulleys 32 are capable of moving relative to the first fixed pulleys 31 to buffer the composite member n.

[0105] The first fixed pulley 31 is a pulley that can rotate and is fixed in position. The first movable pulley 32 is a pulley that can rotate and is not fixed in position. There can be at least one first movable pulley 32.

[0106] The first movable pulley 32 and the first fixed pulley 31 are used to alternately pass around the composite element n, meaning that the composite element n can alternately pass around the first movable pulley 32 and the first fixed pulley 31. For example, if there are two first fixed pulleys 31 and one first movable pulley 32, the composite element n can sequentially pass around one first fixed pulley 31, the first movable pulley 32, and the other first fixed pulley 31. For example, if there are three first fixed pulleys 31 and two first movable pulleys 32, as shown in Figures 2 and 3, the composite element n can sequentially pass around the first first fixed pulley 31, the first first movable pulley 32, the second first fixed pulley 31, the second first movable pulley 32, and the third first fixed pulley 31.

[0107] As shown in Figures 2 and 3, a plurality of first fixed pulleys 31 are spaced apart along the first direction X. In the first direction X, a first movable pulley 32 is provided between two adjacent first fixed pulleys 31. In addition, the first fixed pulley 31 and the first movable pulley 32 are also spaced apart along the second direction Y. The composite part n alternately passes around the first fixed pulley 31 and the first movable pulley 32 and is pulled to the winding device 20. When at least one of the first pole piece b and the second pole piece d stops running for cutting operation, the first movable pulley 32 can move toward the first fixed pulley 31 along the second direction Y to shorten the distance between the first fixed pulley 31 and the first movable pulley 32, so that the winding device 20 can continuously and uninterruptedly perform the winding operation on the composite part n.

[0108] The first direction X is perpendicular to the second direction Y, the first direction X is parallel to the X-axis, and the second direction Y is parallel to the Y-axis.

[0109] By providing the first fixed pulley 31 and the first movable pulley 32 that can move relative to the first fixed pulley 31 , and the first fixed pulley 31 and the first movable pulley 32 can alternately bypass the composite member n, a buffering effect can be achieved for the composite member n.

[0110] It should be noted that the length of the composite component n that can be buffered by the first buffer device 30 can be adjusted by adjusting the number of the first movable pulleys 32 and the distance between the first movable pulleys 32 and the first fixed pulley 31 .

[0111] In some embodiments, please refer to FIG. 2 and FIG. 3 , the winding device 100 further includes a first detection device 40 . The first detection device 40 is disposed between the compounding device 10 and the winding device 20 and is used to detect the composite part n.

[0112] The first detection device 40 is a device for detecting the composite component n. The first detection device 40 may be, but is not limited to, a CCD (charge coupled device) camera.

[0113] By setting a first detection device 40 between the composite device 10 and the winding device 20, the composite part n can be inspected, so that the quality of the composite part n formed by the first diaphragm a, the first electrode b, the second diaphragm c and the second electrode d stacked in sequence can be obtained, including whether the first electrode b and the second electrode d are completely covered, whether the second diaphragm c can achieve the insulation effect between the first electrode b and the second electrode d, etc., which helps to improve the quality of the electrode assembly.

[0114] It should be noted that by setting up the composite device 10 and the winding device 20, there can be a larger space between each winding and unwinding device for winding and unwinding the first diaphragm a, the first electrode piece b, the second diaphragm c and the second electrode piece d and the winding device 20, that is, the rationality of the layout of the winding equipment 100 can be improved, which is conducive to the layout of the above-mentioned first detection device 40, so as to improve the quality of the electrode assembly.

[0115] In some embodiments, referring to FIG. 2 and FIG. 3 , the first detection device 40 is disposed between the composite device 10 and the first cache device 30 .

[0116] In some embodiments, please refer to Figures 2 and 3 together. The composite device 10 includes a first composite structure 11 and a second composite structure 12. The first composite structure 11 is used to stack and composite at least two of the first diaphragm a, the first electrode b, the second diaphragm c and the second electrode d in sequence to form a composite component m. The second composite structure 12 is used to stack and composite the remaining ones of the first diaphragm a, the first electrode b, the second diaphragm c and the second electrode d with the composite component m to form a composite component n.

[0117] The first composite structure 11 refers to a structure for stacking and compounding at least two of the first diaphragm a, the first electrode b, the second diaphragm c and the second electrode d in sequence to form a composite component m, and the second composite structure 12 refers to a structure for stacking and compounding the remaining of the first diaphragm a, the first electrode b, the second diaphragm c and the second electrode d with the composite component m to form a composite component n.

[0118] By providing the first and second composite structures 11 and 12, at least two of the first diaphragm a, first electrode piece b, second diaphragm c, and second electrode piece d can first be stacked and composited in sequence to form composite component m, which is then stacked and composited with the remaining of the first diaphragm a, first electrode piece b, second diaphragm c, and second electrode piece d to form composite component n. In other words, the first diaphragm a, first electrode piece b, second diaphragm c, and second electrode piece d are composited in two composite steps to form composite component n. This allows for more stringent control over the composite operation of the first diaphragm a, first electrode piece b, second diaphragm c, and second electrode piece d, helping to improve the quality of composite component n and, in turn, the quality of the electrode assembly. Furthermore, the provision of the first and second composite structures 11 and 12 facilitates the layout of the second detection device 60 and second cache device 50, discussed below.

[0119] It can be understood that the first buffer device 30 is arranged between the second composite mechanism 12 and the winding device 20 .

[0120] It can be understood that the first detection device 40 is disposed between the second composite mechanism 12 and the first buffer device 30 .

[0121] In some embodiments, please refer to Figures 2 and 3 together. The first composite structure 11 is used to stack and composite the first diaphragm a, the first electrode b and the second diaphragm c in sequence to form a composite component m, and the second composite structure 12 is used to stack and composite the composite component m and the second electrode d to form a composite component n.

[0122] Alternatively, in other embodiments, the first composite structure 11 is used to stack and composite the first diaphragm a and the first pole piece b to form a composite component m, and the second composite structure 12 is used to stack and composite the composite component m, the second diaphragm c and the second pole piece d in sequence to form a composite component n.

[0123] Alternatively, in some other embodiments, the first composite structure 11 is used to stack and composite the first electrode b and the second diaphragm c to form a composite component m, and the second composite structure 12 is used to stack and composite the first diaphragm a, the composite component m and the second electrode d in sequence to form a composite component n.

[0124] By adopting the above technical solution, the first electrode b can be first compounded by the first compounding mechanism 11, and then the second electrode d can be compounded by the second compounding mechanism 12, that is, the first electrode b and the second electrode d are compounded separately. In this way, the composite quality of the first electrode b and the second electrode d can be controlled separately, which can help improve the quality of the composite part n and thus improve the quality of the electrode assembly.

[0125] In some embodiments, please refer to FIG. 2 and FIG. 3 , the winding device 100 further includes a second buffer device 50 , which is disposed between the first composite mechanism 11 and the second composite mechanism 12 and is used to buffer the composite component m.

[0126] The second cache device 50 is a device for caching the composite component m.

[0127] Because the second buffer device 50 is positioned between the first and second composite mechanisms 11, 12 and is used to buffer the composite component m, the second buffer device 50 can buffer the composite component m located between the first and second composite mechanisms 11, 12. For example, if the first composite mechanism 11 is used to composite the first electrode piece b, and the second composite mechanism 12 is used to composite the second electrode piece d, the tape feed of the first electrode piece b can be stopped. In other words, the second reeling and unreeling device 70b can stop reeling and unreeling the first electrode piece b and cut the first electrode piece b, thereby ensuring the cutting operation of the first electrode piece b to a certain extent. Furthermore, when the tape feed of the first electrode piece b is stopped and the cutting operation is performed, the second buffer device 50 buffers the composite component m located between the first and second composite mechanisms 11, 12. This allows the second composite mechanism 12 to continuously and uninterruptedly composite the composite component m with the second electrode piece d to form the composite piece n without stopping, thereby enabling the winding device 20 to continuously and uninterruptedly wind the composite piece n without stopping. In this way, the winding efficiency of the winding apparatus 100 may be improved, thereby improving the production efficiency of the electrode assembly.

[0128] It should be noted that by providing the first and second composite structures 11 and 12, the first separator a, the first electrode piece b, the second separator c, and the second electrode piece d are composited in two composite steps to form the composite member n. Furthermore, a relatively large space can be provided between the first and second composite structures 11 and 12, thereby improving the layout rationality of the winding apparatus 100 and facilitating the placement of the second buffer device 50, thereby enhancing the production efficiency of the electrode assembly.

[0129] In some embodiments, referring to both Figures 2 and 3 , the second buffer device 50 includes a second movable pulley 52 and a plurality of second fixed pulleys 51. The second movable pulleys 52 and the second fixed pulleys 51 are configured to alternately pass around the composite component m, and the second movable pulleys 52 are capable of moving relative to the second fixed pulleys 51 to buffer the composite component m.

[0130] The second fixed pulley 51 is a pulley that can rotate and is fixed in position. The second movable pulley 52 is a pulley that can rotate and is not fixed in position. There can be at least one second movable pulley 52.

[0131] The second movable pulley 52 and the second fixed pulley 51 are used to alternately pass around the composite component m, meaning that the composite component m can alternately pass around the second movable pulley 52 and the second fixed pulley 51. For example, if there are two second fixed pulleys 51 and one second movable pulley 52, the composite component m can sequentially pass around one second fixed pulley 51, the second movable pulley 52, and the other second fixed pulley 51. For example, if there are three second fixed pulleys 51 and two second movable pulleys 52, as shown in Figures 2 and 3, the composite component m can sequentially pass around the first second fixed pulley 51, the first second movable pulley 52, the second second fixed pulley 51, the second second movable pulley 52, and the third second fixed pulley 51.

[0132] As shown in Figures 2 and 3, multiple second fixed pulleys 51 are spaced apart along the first direction X. In the first direction X, a second movable pulley 52 is provided between two adjacent second fixed pulleys 51. Furthermore, the second fixed pulleys 51 and the second movable pulleys 52 are also spaced apart along the second direction Y. The composite component m alternately passes around the second fixed pulleys 51 and the second movable pulleys 52 and is pulled to the second composite mechanism 12. For example, when the first composite mechanism 11 is used to composite the first pole piece b and the second composite mechanism 12 is used to composite the second pole piece d, when the first pole piece b stops running to perform a cutting operation, the second movable pulley 52 can move along the second direction Y toward the second fixed pulley 51 to shorten the distance between the second fixed pulley 51 and the second movable pulley 52, allowing the second composite mechanism 12 to continuously and uninterruptedly composite the composite component m to form a composite component n. Accordingly, the winding device 20 can continuously and uninterruptedly perform a winding operation on the composite component n.

[0133] By providing the second fixed pulley 51 and the second movable pulley 52 which can move relative to the second fixed pulley 51 , and the second fixed pulley 51 and the second movable pulley 52 can alternately bypass the composite component m, a buffering effect can be achieved for the composite component m.

[0134] It should be noted that the length of the composite component m that can be cached by the second cache device 50 can be adjusted by adjusting the number of the second movable pulleys 52 and the distance between the second movable pulleys 52 and the second fixed pulley 51 .

[0135] In some embodiments, please refer to FIG. 2 and FIG. 3 , the winding device 100 further includes a second detection device 60 . The second detection device 60 is disposed between the first composite mechanism 11 and the second composite mechanism 12 and is used to detect the composite component m.

[0136] The second detection device 60 is a device for detecting the composite component n. The second detection device 60 may be, but is not limited to, a CCD (charge coupled device) camera.

[0137] By disposing a second inspection device 60 between the first and second assembly mechanisms 11 and 12, the composite component m can be inspected, thereby determining the quality of the composite component m. Based on this, the second inspection device 60 can inspect the composite component m, thereby determining the degree of integration of at least two of the first diaphragm a, first electrode piece b, second diaphragm c, and second electrode piece d that need to be combined to form the composite component m. The first inspection device 40 can inspect the composite component n, thereby determining the degree of integration of the remaining components of the first diaphragm a, first electrode piece b, second diaphragm c, and second electrode piece d with the composite component m. For example, in the case where the first assembly mechanism 11 is used to sequentially stack the first diaphragm a, first electrode piece b, and second diaphragm c to form the composite component m, and the second assembly mechanism 12 is used to stack the composite component m and second electrode piece d to form the composite component n, the second inspection device 60 can inspect the degree of integration of the first electrode piece b, first diaphragm a, and second diaphragm c, while the first inspection device 40 can inspect the degree of integration of the composite component m and second electrode piece d. In this way, the quality of the composite member n can be strictly controlled, thereby helping to improve the quality of the electrode assembly.

[0138] It should be noted that by providing the first and second composite structures 11 and 12, the first separator a, the first electrode piece b, the second separator c, and the second electrode piece d are composited in two composite steps to form the composite member n. Furthermore, a relatively large space can be provided between the first and second composite structures 11 and 12, thereby improving the layout rationality of the winding apparatus 100 and facilitating the placement of the second detection device 60, thereby enhancing the quality of the electrode assembly.

[0139] It can be understood that the second detection device 60 is disposed between the first composite mechanism 11 and the second buffer device 50 .

[0140] In some embodiments, referring to Figures 2 and 3 , the first laminating mechanism 11 includes a first laminating roller 111 and a second laminating roller 112. The first laminating roller 111 and the second laminating roller 112 rotate in opposite directions. The first laminating roller 111 and the second laminating roller 112 cooperate to roll and laminate at least two of the first diaphragm a, the first electrode piece b, the second diaphragm c, and the second electrode piece d.

[0141] The first composite roller 111 and the second composite roller 112 both have a roller-shaped structure.

[0142] As shown in Figures 2 and 3, the first composite roller 111 and the second composite roller 112 are arranged in parallel. Specifically, the central axis of the first composite roller 111 and the central axis of the second composite roller 112 are arranged in parallel, and the rotation direction of the first composite roller 111 and the rotation direction of the second composite roller 112 are opposite. The first composite roller 111 and the second composite roller 112 are spaced apart to form a first composite gap 1101. As an example, as shown in Figures 2 and 3, the first composite roller 111 and the second composite roller 112 are spaced apart along the second direction Y to form the first composite gap 1101.

[0143] Based on the above structure, at least two of the first diaphragm a, the first electrode piece b, the second diaphragm c, and the second electrode piece d can pass through the first composite gap 1101 and be rolled by the first composite roller 111 and the second composite roller 112 to form a composite component m. This arrangement can achieve the composite effect of the first composite mechanism 11.

[0144] In some embodiments, referring to Figures 2 and 3 , the second laminating mechanism 12 includes a third laminating roller 121 and a fourth laminating roller 122. The third laminating roller 121 and the fourth laminating roller 122 rotate in opposite directions. The third laminating roller 121 and the fourth laminating roller 122 cooperate to roll and laminate the remaining of the first diaphragm a, the first electrode piece b, the second diaphragm c, and the second electrode piece d with the composite component m.

[0145] The third composite roller 121 and the fourth composite roller 122 are both roller-shaped structures.

[0146] As shown in Figures 2 and 3, the third composite roll 121 and the fourth composite roll 122 are arranged in parallel. Specifically, the central axis of the third composite roll 121 and the central axis of the fourth composite roll 122 are arranged in parallel, and the rotation direction of the third composite roll 121 is opposite to the rotation direction of the fourth composite roll 122. The third composite roll 121 and the fourth composite roll 122 are spaced apart to form a second composite gap 1201. As an example, as shown in Figures 2 and 3, the third composite roll 121 and the fourth composite roll 122 are spaced apart along the second direction Y to form the second composite gap 1201.

[0147] Based on the above structure, the remaining of the first diaphragm a, the first electrode piece b, the second diaphragm c, and the second electrode piece d can pass through the second composite gap 1201 and be rolled by the third composite roller 121 and the fourth composite roller 122 to form a composite piece n. This arrangement can achieve the composite effect of the second composite mechanism 12.

[0148] It should be noted that in some possible designs, the first composite mechanism 11 includes the first composite roller 111 and the second composite roller 112. Alternatively, the second composite mechanism 12 includes the third composite roller 121 and the fourth composite roller 122. Alternatively, the first composite mechanism 11 includes the first composite roller 111 and the second composite roller 112, and the second composite mechanism 12 includes the third composite roller 121 and the fourth composite roller 122.

[0149] In some embodiments, please refer to Figures 2 and 4 . Figure 4 is a schematic diagram of a winding device 20 of a winding apparatus 100 provided in some embodiments of the present application. The winding device 20 includes a turret 21 and a winding needle 22. The turret 21 is provided with a plurality of workstations 201, which are sequentially distributed along the circumference. The winding needle 22 is mounted on the turret 21 and can rotate with the turret 21 to the plurality of workstations 201.

[0150] The turret 21 is a device that can drive the winding needle 22 to rotate.

[0151] The winding needle 22 is a component that is rotated to wind the composite member n.

[0152] Based on the above structure, as the turret 21 rotates, the winding needle 22 can rotate with the turret 21 to the multiple workstations 201 in sequence, performing corresponding processing operations at each workstation 201. In this way, the composite material n can be wound to form an electrode assembly after passing through the multiple workstations 201 in sequence, thereby ensuring the molding quality of the electrode assembly to a certain extent.

[0153] In some embodiments, please refer to FIG. 2 and FIG. 4 . There are multiple winding needles 22 . The multiple winding needles 22 are sequentially arranged on the turret 21 along the circumferential direction. The multiple winding needles 22 can be located at multiple workstations 201 , respectively.

[0154] The plurality of winding needles 22 are respectively located at the plurality of workstations 201 , so that the plurality of winding needles 22 can perform processing operations at the corresponding workstations 201 , thereby improving the winding efficiency of the winding device 20 and improving the production efficiency of the electrode assembly.

[0155] As an example, as shown in FIG. 2 and FIG. 4 , the number of the workstations 201 is the same as the number of the winding needles 22 , and the plurality of winding needles 22 can be located in a one-to-one correspondence at the plurality of workstations 201 .

[0156] It should be noted that by providing the compounding device 10 and the winding device 20, the compounding operation and the winding operation of the first separator a, the first electrode piece b, the second separator c, and the second electrode piece d are separately arranged, without having to concentrate the compounding and winding at the winding needle 22 of the winding device 20. As a result, there can be a large space between each winding and unwinding device for winding and unwinding the first separator a, the first electrode piece b, the second separator c, and the second electrode piece d and the winding device 20, which can improve the rationality of the layout of the winding equipment 100. Specifically, there is a large space near the winding device 20, which can be used to arrange the multiple winding needles 22 and multiple workstations 201 mentioned above, which is conducive to improving the production efficiency of the electrode assembly.

[0157] In some embodiments, please refer to Figures 2 and 4 together. The multiple stations 201 include a winding station 201a and a gluing station 201c. The winding needle 22 is used to wind the composite part n in the winding station 201a, and the winding needle 22 is used to glue the electrode assembly in the gluing station 201c.

[0158] It can be understood that the number of the above-mentioned workstations 201 is at least two, wherein the two workstations 201 are a winding workstation 201a and a gluing workstation 201c.

[0159] Based on the above structure, when the winding device 20 is in operation, the turret 21 first rotates to move the winding needle 22 to the winding station 201a, where the winding needle 22 winds the composite material n to form an electrode assembly. The turret 21 then rotates to move the winding needle 22 and the electrode assembly on it to the gluing station 201c for final gluing. This can alleviate the problem of electrode assembly unraveling and, to a certain extent, ensure the quality of the electrode assembly.

[0160] In some embodiments, please refer to FIG. 2 and FIG. 4 , the winding device 20 may further include a glue-applying roller 24 , which is located at the glue-applying station 201 c and is used to apply glue to the electrode assembly.

[0161] Based on the above structure, when the winding needle 22 and the electrode assembly thereon rotate to the gluing station 201c, the electrode assembly will slide relative to the gluing roller 24 under the rotation of the turret 21, so that the gluing roller 24 can glue the electrode assembly.

[0162] In some embodiments, please refer to FIG. 2 and FIG. 4 , the rotation direction of the adhesive roller 24 is opposite to that of the turret 21 , so that the adhesive roller 24 can apply adhesive to the electrode assembly during the rotation of the turret 21 .

[0163] In some embodiments, please refer to Figures 2 and 4 together. The multiple workstations 201 can also include a finishing workstation 201b. The winding workstation 201a, the finishing workstation 201b and the gluing workstation 201c are distributed in sequence along the circumference. The winding needle 22 is used in the finishing workstation 201b to finish the electrode assembly.

[0164] It can be understood that the number of the above-mentioned workstations 201 is at least three, wherein the three workstations 201 are respectively a winding workstation 201a, a finishing workstation 201b and a gluing workstation 201c.

[0165] Based on the above structure, when the winding device 20 is in operation, the turret 21 first rotates to move the winding needle 22 to the winding station 201a, where the winding needle 22 winds the composite material n to form an electrode assembly. The turret 21 then rotates to move the winding needle 22 and the electrode assembly on it to the finishing station 201b for finishing. Finally, the turret 21 rotates to move the winding needle 22 and the electrode assembly on it to the gluing station 201c for gluing.

[0166] In this way, by adding the finishing station 201b, the electrode assembly can be finished, which is convenient for the electrode assembly to proceed to the gluing station 201c, and the problem of the electrode assembly being scattered can be improved, so as to ensure the quality of the electrode assembly to a certain extent.

[0167] In some embodiments, please refer to FIG. 2 and FIG. 4 , the winding device 20 may further include a finishing roller 23 , which is located at the finishing station 201 b and is used to finish the electrode assembly.

[0168] Based on the above structure, when the winding needle 22 and the electrode assembly thereon rotate to the finishing station 201b, the electrode assembly will slide relative to the finishing roller 23 under the rotation of the turret 21, so that the finishing roller 23 rolls the finishing position of the electrode assembly to achieve the finishing of the electrode assembly, thereby facilitating the smooth subsequent gluing operation of the electrode assembly.

[0169] In some embodiments, please refer to Figures 2 and 4 together. The rotation direction of the finishing roller 23 is opposite to the rotation direction of the turret 21, so that the finishing roller 23 can perform finishing operations on the electrode assembly during the rotation of the turret 21.

[0170] In some embodiments, please refer to Figures 2 and 4 together. The multiple workstations 201 can also include a blanking station 201d. The winding station 201a, the gluing station 201c and the blanking station 201d are distributed in sequence along the circumference. The winding needle 22 is used to blank the electrode assembly at the blanking station 201d.

[0171] Based on the above structure, when the winding device 20 is in operation, the turret 21 first rotates to move the winding needle 22 to the winding station 201a, where the winding needle 22 winds the composite material n to form an electrode assembly. The turret 21 then rotates to move the winding needle 22 and the electrode assembly on it to the gluing station 201c for gluing. Finally, the turret 21 rotates to move the winding needle 22 and the electrode assembly on it to the unloading station 201d for unloading.

[0172] In this way, by adding the blanking station 201 d , the electrode assembly can be blanked at the blanking station 201 d without affecting the work of other winding needles 22 .

[0173] In some embodiments, please refer to FIG. 2 and FIG. 4 , the winding device 20 may further include a blanking mechanism 25 , and the blanking mechanism 25 is used to blank the electrode assembly at the blanking station 201 d .

[0174] The unloading mechanism 25 is a mechanism for unloading the electrode assembly, wherein the unloading mechanism 25 can be, but is not limited to, a clamp.

[0175] As can be understood, the turret 21 may include a winding station 201a, a finishing station 201b, a gluing station 201c, and a blanking station 201d, with these stations being arranged sequentially along the circumference. When the winding device 20 is in station 201, the turret 21 rotates to first move the winding needle 22 to the winding station 201a, where it winds the composite material n into an electrode assembly. The turret 21 then moves the winding needle 22 and the electrode assembly on it to the finishing station 201b, where the finishing rollers 23 of the finishing station 201b perform the finishing. The turret 21 then moves the winding needle 22 and the electrode assembly on it to the gluing station 201c, where the gluing rollers 24 perform the gluing. Then, the turret 21 rotates the winding needle 22 and the electrode assembly thereon to the unloading station 201d, where the electrode assembly is unloaded by the unloading mechanism 25. Then, the turret 21 rotates the winding needle 22 to the winding station 201a, where the winding needle 22 winds the next composite component n.

[0176] Referring to Figures 2 and 4 , the turret 21 may also include a retraction station 201e. The winding station 201a, finishing station 201b, gluing station 201c, unloading station 201d, and retraction station 201e are sequentially arranged along the circumference. As can be understood, the turret 21 rotates the winding needle 22 and the electrode assembly on it to the unloading station 201d. After the electrode assembly is unloaded by the unloading mechanism 25, the turret 21 rotates the winding needle 22 to the retraction station 201e, where it retracts into the turret 21. Finally, the turret 21 rotates the winding needle 22 to the winding station 201a, where it extends to wind the composite component n into an electrode assembly. The addition of the retraction station 201e allows the winding needle 22 to be retracted and then extended, facilitating the clamping of the winding needle 22 to wind the composite component n.

[0177] Referring to Figures 2 and 4 , there are five winding needles 22, which are distributed one-to-one between the winding station 201a, the finishing station 201b, the gluing station 201c, the blanking station 201d, and the retraction station 201e. The five winding needles 22 can sequentially rotate to the winding station 201a for winding, the finishing station 201b, the gluing station 201c, the gluing station 201c, the blanking station 201d, and the retraction station 201e. This helps improve the winding efficiency of the winding device 20 and thus the production efficiency of the electrode assembly.

[0178] 1 , the battery processing apparatus 1000 provided in the embodiment of the present application includes a winding apparatus 100. The winding apparatus 100 in this embodiment is identical to the winding apparatus 100 in the previous embodiment. For details, please refer to the description of the winding apparatus 100 in the previous embodiment, which will not be repeated here.

[0179] The battery processing equipment 1000 provided in the embodiment of the present application, by adopting the winding equipment 100 involved in the above embodiments, can improve the layout rationality of the winding equipment 100, so as to improve the layout rationality of the battery processing equipment 1000, which is beneficial to the layout of functional devices such as the first cache device 30, the second cache device 50, the first detection device 40, and the second detection device 60, thereby helping to improve the quality of the electrode assembly and thus improve the quality of the battery.

[0180] In some embodiments, referring to Figure 1 , the battery processing equipment 1000 further includes an assembly device 200 and a stacking device 300. The assembly device 200 is used to assemble electrode assemblies into battery cells, and the stacking device 300 is used to stack multiple battery cells into a battery.

[0181] With such arrangement, a battery can be obtained by processing.

[0182] The battery production line provided in the embodiment of the present application includes a winding device 100 or a battery processing device 1000. The winding device 100 and the battery processing device 1000 in this embodiment are the same as those in the previous embodiment. For details, please refer to the relevant description of the winding device 100 and the battery processing device 1000 in the previous embodiment, which will not be repeated here.

[0183] The battery production line provided in the embodiment of the present application, by adopting the winding equipment 100 or battery processing equipment 1000 involved in the above embodiments, can improve the rationality of the layout of the winding equipment 100, so as to improve the rationality of the layout of the battery processing equipment 1000, which is beneficial to the layout of functional devices such as the first cache device 30, the second cache device 50, the first detection device 40, and the second detection device 60, thereby helping to improve the quality of the electrode assembly and thus improve the quality of the battery.

[0184] As one embodiment of the present application, as shown in Figures 2 to 4, a winding apparatus 100 includes a compounding device 10, a winding device 20, a first buffer device 30, a second buffer device 50, a first detection device 40, and a second detection device 60. The compounding device 10 includes a first compounding mechanism 11 and a second compounding mechanism 12. The first compounding mechanism 11 is used to sequentially stack and compound the first separator a, the first electrode plate b, and the second separator c to form a composite component m. The second compounding mechanism 12 is used to stack and compound the composite component m and the second electrode plate d to form a composite component n. The winding device 20 is used to wind the composite component n to form an electrode assembly. The first buffer device 30 is disposed between the second compounding mechanism 12 and the winding device 20. The first detection device 40 is disposed between the second compounding mechanism 12 and the first buffer device 30. The second buffer device 50 is disposed between the first compounding mechanism 11 and the second compounding mechanism 12. The second detection device 60 is disposed between the first compounding mechanism 11 and the second buffer device 50.

[0185] The winding device 20 includes a turret 21 and a plurality of winding needles 22 disposed thereon. The plurality of winding needles 22 are spaced circumferentially about the turret 21. The turret 21 is provided with a winding station 201a, a finishing station 201b, a gluing station 201c, a blanking station 201d, and a retraction station 201e, which are sequentially arranged circumferentially. The turret 21 is rotatable, and the winding needles 22 rotate with the turret 21 to the winding station 201a, the finishing station 201b, the gluing station 201c, the blanking station 201d, and the retraction station 201e, with the plurality of winding needles 22 correspondingly positioned at the winding station 201a, the finishing station 201b, the gluing station 201c, the blanking station 201d, and the retraction station 201e.

[0186] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A winding device (100), characterized in that: include: A composite device (10) is used to laminate and composite a first diaphragm (a), a first pole piece (b), a second diaphragm (c) and a second pole piece (d) in sequence to form a composite member (n); A winding device (20) is used for winding the composite member (n) to form an electrode assembly.

2. The winding device (100) according to claim 1, characterized in that The winding device (100) further comprises a first buffer device (30), wherein the first buffer device (30) is arranged between the composite device (10) and the winding device (20) and is used for buffering the composite part (n).

3. The winding device (100) according to claim 2, characterized in that The first cache device (30) comprises: A plurality of first fixed pulleys (31); The first movable pulley (32) and the first fixed pulley (31) are used to alternately bypass the composite member (n), and the first movable pulley (32) can move relative to the first fixed pulley (31) to buffer the composite member (n).

4. The winding device (100) according to any one of claims 1 to 3, characterized in that: The winding device (100) further comprises a first detection device (40), wherein the first detection device (40) is arranged between the composite device (10) and the winding device (20) and is used to detect the composite part (n).

5. The winding device (100) according to any one of claims 1 to 4, characterized in that: The composite device (10) comprises a first composite structure (11) and a second composite structure (12), wherein the first composite structure (11) is used to stack and composite at least two of the first diaphragm (a), the first pole piece (b), the second diaphragm (c) and the second pole piece (d) in sequence to form a composite component (m), and the second composite structure (12) is used to stack and composite the remaining of the first diaphragm (a), the first pole piece (b), the second diaphragm (c) and the second pole piece (d) with the composite component (m) to form the composite component (n).

6. The winding device (100) according to claim 5, characterized in that The first composite mechanism (11) is used to laminate and composite the first diaphragm (a), the first pole piece (b) and the second diaphragm (c) in sequence to form the composite component (m), and the second composite mechanism (12) is used to laminate and composite the composite component (m) and the second pole piece (d) to form the composite component (n); Alternatively, the first composite mechanism (11) is used to laminate and composite the first diaphragm (a) and the first pole piece (b) to form the composite component (m), and the second composite mechanism (12) is used to laminate and composite the composite component (m), the second diaphragm (c) and the second pole piece (d) in sequence to form the composite component (n); Alternatively, the first composite structure (11) is used to stack and composite the first pole piece (b) and the second diaphragm (c) to form the composite component (m), and the second composite structure (12) is used to stack and composite the first diaphragm (a), the composite component (m) and the second pole piece (d) in sequence to form the composite component (n).

7. The winding device (100) according to claim 5 or 6, characterized in that The winding device (100) further comprises a second buffer device (50), wherein the second buffer device (50) is arranged between the first composite mechanism (11) and the second composite mechanism (12) and is used for buffering the composite component (m).

8. The winding device (100) according to claim 7, characterized in that The second cache device (50) comprises: A plurality of second fixed pulleys (51); The second movable pulley (52) and the second fixed pulley (51) are used to alternately bypass the composite component (m), and the second movable pulley (52) can move relative to the second fixed pulley (51) to buffer the composite component (m).

9. The winding device (100) according to any one of claims 5 to 8, characterized in that: The winding device (100) further comprises a second detection device (60), wherein the second detection device (60) is arranged between the first composite mechanism (11) and the second composite mechanism (12) and is used for detecting the composite component (m).

10. The winding device (100) according to any one of claims 5 to 9, characterized in that: The first composite mechanism (11) comprises a first composite roller (111) and a second composite roller (112) which rotate in opposite directions, wherein the first composite roller (111) and the second composite roller (112) are used to cooperate in rolling to composite at least two of the first diaphragm (a), the first pole piece (b), the second diaphragm (c) and the second pole piece (d); And / or, the second composite structure (12) includes a third composite roller (121) and a fourth composite roller (122) which rotate in opposite directions, and the third composite roller (121) and the fourth composite roller (122) are used to cooperate in rolling to composite the first diaphragm (a), the first pole piece (b), the second diaphragm (c) and the remaining of the second pole piece (d) with the composite component (m).

11. The winding device (100) according to any one of claims 1 to 10, characterized in that: The winding device (20) comprises: A turret (21) is provided with a plurality of workstations (201) sequentially distributed along the circumferential direction; The winding needle (22) is arranged on the turret (21) and can rotate to the plurality of workstations (201) in sequence along with the turret (21).

12. The winding device (100) according to claim 11, characterized in that The number of the winding needles (22) is multiple, and the multiple winding needles (22) are sequentially arranged on the turret (21) along the circumferential direction, and the multiple winding needles (22) can be located at multiple workstations (201) respectively.

13. The winding device (100) according to claim 11 or 12, characterized in that The plurality of workstations (201) include a winding workstation (201a) and a gluing workstation (201c), wherein the winding needle (22) is used for winding the composite member (n) at the winding workstation (201a), and the winding needle (22) is used for gluing the electrode assembly at the gluing workstation (201c).

14. The winding device (100) according to claim 13, characterized in that The plurality of workstations (201) further include a finishing workstation (201b), wherein the winding workstation (201a), the finishing workstation (201b) and the gluing workstation (201c) are sequentially distributed along the circumferential direction, and the winding needle (22) is used at the finishing workstation (201b) for finishing the electrode assembly.

15. The winding device (100) according to claim 14, characterized in that The plurality of workstations (201) further include a blanking workstation (201d), wherein the winding workstation (201a), the gluing workstation (201c) and the blanking workstation (201d) are sequentially distributed along the circumferential direction, and the winding needle (22) is used at the blanking workstation (201d) to blank the electrode assembly.

16. A battery processing device (1000), characterized in that: It comprises a winding device (100) according to any one of claims 1-15.

17. The battery processing equipment (1000) according to claim 16, characterized in that: The battery processing equipment (1000) further includes: An assembly device (200) for assembling the electrode assembly to form a battery cell; A stacking device (300) is used to stack the battery cells to form a battery.

18. A battery production line, characterized in that: It comprises a winding device (100) according to any one of claims 1 to 15; or, it comprises a battery processing device (1000) according to claim 16 or 17.

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