Slitting device, winding equipment and method, battery processing equipment and battery production line

Abstract

The invention is suitable for the technical field of slitting, and provides a slitting device, a winding device and method, a battery processing device and a battery production line, the battery production line comprises the battery processing device, the battery processing device comprises the slitting device or the winding device, and the winding device comprises the slitting device. The slitting device comprises a cutter mechanism, the cutter mechanism comprises a moving part and a cutter arranged on the moving part, and the cutter is used for periodically moving along with the moving part so as to periodically slit the part to be cut. The winding method comprises the steps of conveying the to-be-cut piece, driving the winding mechanism to wind the to-be-cut piece, and driving the moving piece to move periodically, so that the cutter moves periodically along with the moving piece to cut the to-be-cut piece periodically. In this way, the movement period of the moving part can be set to be the conveying time of the to-be-cut part with the required length, and the cutter cuts the to-be-cut part in the periodic movement process of the moving part. Therefore, in the process of slitting the to-be-cut piece by the cutter, the to-be-cut piece does not need to be decelerated or stopped to be conveyed, so that the winding efficiency of the to-be-cut piece can be improved.

Description

Technical Field

[0001] The present application belongs to the field of slitting technology, and more specifically, relates to a slitting device, a winding device and method, a battery processing equipment, and a battery production line. Background Art

[0002] In the related art, the wound electrode assembly is mainly formed by winding the electrode sheet and the diaphragm. In the winding process of the electrode assembly, the electrode sheet and the diaphragm are generally cut according to the required diameter of the electrode assembly to obtain the electrode sheet and the diaphragm of the required length. In this way, the winding needle can wind the electrode sheet of the required length and the diaphragm of the required length to obtain the electrode assembly of the required diameter.

[0003] In some cases, in order to smoothly cut the electrode sheets and separators, it is necessary to first reduce the conveying speed of the pieces to be cut or stop the conveying of the pieces to be cut, and then cut the pieces to be cut by the cutter mechanism. In this way, the winding operation of the pieces to be cut will be slowed down or stopped, which will affect the winding efficiency of the winding equipment for the pieces to be cut. As a result, the winding efficiency of the electrode assembly will be affected, and then the production efficiency of the electrode assembly will be affected. Summary of the invention

[0004] In view of the above problems, the embodiments of the present application provide a slitting device, a winding device and method, a battery processing equipment, and a battery production line, which can improve the technical problem of slow winding efficiency.

[0005] In a first aspect, an embodiment of the present application provides a slitting device, comprising:

[0006] The cutter mechanism comprises a moving part and a cutter arranged on the moving part, wherein the cutter is used for periodically moving with the moving part to periodically cut the parts to be cut.

[0007] The slitting device provided in the embodiment of the present application can set the movement cycle of the moving part to the conveying time of the required length of the workpiece to be cut. In this way, the cutter can move periodically with the moving part, and cut the workpiece to be cut during the periodic movement of the moving part. Specifically, the cutter can cut the workpiece to be cut in each movement cycle of the moving part, so that the workpiece to be cut of the required length can be periodically cut out. With such an arrangement, during the process of the cutter cutting the workpiece to be cut, there is no need to reduce the conveying speed of the workpiece to be cut or stop the conveying of the workpiece to be cut, so that the winding efficiency of the workpiece to be cut can be improved. That is, the winding efficiency of the electrode assembly can be improved to improve the production efficiency of the electrode assembly.

[0008] In some embodiments, the moving part is configured to be rotatable.

[0009] By adopting the above technical solution, the cutter can rotate at least after cutting the pieces to be cut. Based on this, the cutter can rotate immediately after cutting the pieces to be cut, so as to be separated from the pieces to be cut as much as possible without blocking the pieces to be cut, so as to ensure the continuous conveying effect of the pieces to be cut to a certain extent.

[0010] In some embodiments, the cutting cycle of the cutter is the rotation cycle of the moving part.

[0011] Such arrangement enables the moving part to rotate periodically, and the cutter to rotate periodically with the moving part. Based on this, during the conveying process of the pieces to be cut, the cutter can rotate periodically with the moving part, and cut the pieces to be cut in each rotation cycle, thereby periodically cutting out pieces to be cut of a desired length.

[0012] In some embodiments, at least a portion of the cutter is disposed on an outer circumferential surface of the moving part.

[0013] By at least partially arranging the cutter on the outer peripheral surface of the moving part, the pieces to be cut can be passed through a position adjacent to the outer peripheral surface of the moving part when being conveyed, so that the cutter can cut the pieces to be cut while rotating with the moving part.

[0014] In some embodiments, the slitting device further comprises a base having a first surface, wherein a first gap is formed between the first surface and the moving part for the passage of the piece to be cut, and the cutter is used to cooperate with the first surface to slitting the piece to be cut.

[0015] By arranging a cutter to cooperate with the first surface to cut the piece to be cut, the piece to be cut can be limited to the first surface, which makes it easier for the cutter to cut the piece to be cut quickly and accurately.

[0016] In some embodiments, the first surface is provided with a knife groove, and the cutting knife is used to be plugged into and cooperate with the knife groove to cut the piece to be cut.

[0017] The cutter and the cutter groove are plugged in and matched to cut the workpiece to be cut, thereby improving the reliability and accuracy of the cutter in cutting the workpiece to be cut.

[0018] In some embodiments, the base is configured to be movable and is used to move with the workpiece to be cut or to transport the workpiece to be cut through the first surface.

[0019] Such arrangement facilitates the determination of the movement cycle of the moving member and the cutter, that is, facilitates the determination of the slitting cycle of the cutter. Thus, the cutter facilitates the periodic movement during the conveying process of the pieces to be cut, so as to periodically slit the pieces to be cut without affecting the normal conveying of the pieces to be cut, thus improving the winding efficiency of the pieces to be cut.

[0020] In some embodiments, the moving part and the base are both configured to be rotatable, the rotation direction of the base is opposite to the rotation direction of the moving part, and the first surface is the outer peripheral surface of the base.

[0021] Such an arrangement makes it easier for the cutter to cut the pieces to be cut during the conveying process during the rotation process without affecting the conveying of the pieces to be cut, thereby improving the winding efficiency of the pieces to be cut.

[0022] In some embodiments, the rotation period of the base is the same as the rotation period of the moving part.

[0023] With such arrangement, the circumference of the outer surface of the base can be determined by the required length of the workpiece to be cut, and the rotation period of the moving part can be determined by the rotation period of the base. This facilitates the setting of the movement period of the moving part, so that the cutter moves periodically with the moving part to periodically cut out the workpiece to be cut of the required length.

[0024] In some embodiments, the slitting device further comprises a first driving mechanism, an output end of which is connected to the base and is used to drive the base to transport the pieces to be cut.

[0025] In this way, the base can convey the workpiece to be cut to the first gap under the drive of the first driving mechanism, so that the cutter can periodically cut the workpiece to be cut in the first gap.

[0026] In some embodiments, the slitting device also includes a limiting member spaced apart from the moving member, the limiting member is provided with a second surface, the first surface and the second surface are spaced apart to form a second gap connected to the first gap, the second gap and the first gap are used to pass the pieces to be cut in sequence.

[0027] On the one hand, the workpiece to be cut can pass through the first gap better and fit on the first surface, so that the cutter and the first surface of the base can cooperate to cut the workpiece to be cut. On the other hand, the workpiece to be cut can have a higher flatness, improve the problem of bending and wrinkling of the workpiece to be cut, and help improve the quality of the workpiece to be cut and the quality of the product (such as the electrode assembly) formed by winding the workpiece to be cut.

[0028] In some embodiments, the first surface and the second surface are used to cooperate in conveying the workpiece to be cut.

[0029] Such arrangement enables the limiter and the base to cooperate in conveying the pieces to be cut, that is, the first surface and the second surface to cooperate in conveying the pieces to be cut, so as to convey the pieces to be cut to the first gap, so that the cutter can periodically cut the pieces to be cut at the first gap.

[0030] In some embodiments, the limiting member is configured to be movable and is used to move with the workpiece to be cut or to transport the workpiece to be cut through the second surface.

[0031] In this way, the limiting member can cooperate with the base to limit the piece to be cut, and facilitates the piece to be cut to be transported to the first gap, so that the cutter can periodically cut the piece to be cut in the first gap.

[0032] In some embodiments, the moving part and the limiting part are both configured to be rotatable, the rotation direction of the limiting part is the same as the rotation direction of the moving part, and the second surface is the outer peripheral surface of the limiting part.

[0033] By setting the rotation direction of the limiting member to be the same as that of the moving member, it is convenient to convey the workpiece to be cut to the first gap, and it is also convenient for the cutter to cut the workpiece to be cut at the first gap during the periodic movement of the moving member without affecting the conveyance of the workpiece to be cut, thereby improving the winding efficiency of the workpiece to be cut.

[0034] In some embodiments, the slitting device further comprises a second driving mechanism, an output end of which is connected to the limiting member and is used to drive the limiting member to convey the piece to be cut.

[0035] In this way, the limiting member can convey the workpiece to be cut to the first gap under the drive of the second driving mechanism, so that the cutter can periodically cut the workpiece to be cut in the first gap.

[0036] In some embodiments, the slitting device further includes a first adsorption mechanism, which is disposed on the limiting member and is used to adsorb the piece to be cut onto the second surface.

[0037] Such an arrangement facilitates the flexible and reliable delivery of the pieces to be cut to the first gap, so that the cutter can periodically cut the pieces to be cut at the first gap.

[0038] In some embodiments, the first adsorption mechanism is used to adsorb the workpiece to be cut onto the second surface, so that the limiting member moves with the workpiece to be cut or transports the workpiece to be cut; the first adsorption mechanism is also used to remove the adsorption of the workpiece to be cut, so that the workpiece to be cut can be separated from the second surface and transported to the first gap.

[0039] Such an arrangement facilitates the flexible and reliable delivery of the pieces to be cut to the first gap, so that the cutter can periodically cut the pieces to be cut at the first gap.

[0040] In some embodiments, the slitting device further includes a second adsorption mechanism, which is disposed on the base and is used to adsorb the piece to be cut onto the first surface.

[0041] Such arrangement facilitates flexible and reliable delivery of the workpiece to be cut to the first gap, so that the cutter can periodically cut the workpiece to be cut at the first gap. In addition, by adsorbing the workpiece to be cut on the first surface, the cutter can cut the workpiece to be cut in cooperation with the first surface, and can also improve the problem of bending and wrinkling of the workpiece to be cut.

[0042] In some embodiments, the second adsorption mechanism is used to adsorb the workpiece to be cut to the first surface so that the base moves with the workpiece to be cut or transports the workpiece to be cut; the second adsorption mechanism is also used to remove the adsorption of the workpiece to be cut so that the workpiece to be cut after cutting can be separated from the base.

[0043] Such a configuration facilitates the flexible and reliable delivery of the uncut pieces to be cut to the first gap, so that the cutter can periodically cut the pieces to be cut at the first gap. Moreover, by adsorbing the uncut pieces to be cut on the first surface, it is also convenient for the cutter to cut the pieces to be cut in cooperation with the first surface, and it can also improve the problem of bending and wrinkling of the pieces to be cut. In addition, it is also convenient for the cut pieces to be separated from the base after cutting and to be wound to form an electrode assembly or to continue to be transported to a predetermined position.

[0044] In some embodiments, the second adsorption mechanism is movably connected to the base and is used to move with the base to adsorb the uncut pieces to be cut; and is also used to move relative to the base to remove the adsorption of the cut pieces to be cut.

[0045] By adopting the above technical solution, the second adsorption mechanism can adsorb the uncut pieces to be cut, so that the uncut pieces to be cut can be transported to the first gap. In addition, the second adsorption mechanism can also remove the adsorption of the cut pieces to be cut, so that the cut pieces to be cut can be separated from the base.

[0046] In some embodiments, the base is configured to be rotatable; at least a portion of the second adsorption mechanism is disposed in the base to divide the base into an adsorption portion and a non-adsorption portion, and is configured to rotate with the base; at least a portion of the second adsorption mechanism is also configured to rotate relative to the base to adjust the positions of the adsorption portion and the non-adsorption portion, so that the adsorption portion is opposite to at least a portion of the workpiece to be cut that has not been cut, and the non-adsorption portion is opposite to at least a portion of the workpiece to be cut after cutting.

[0047] Such arrangement enables the second adsorption mechanism to adsorb the uncut pieces to be cut, so as to facilitate the conveyance of the uncut pieces to be cut. In addition, the second adsorption mechanism can also remove the adsorption of the cut pieces to be cut, so as to facilitate the separation of the cut pieces to be cut from the base.

[0048] In some embodiments, the first surface is provided with adsorption holes, the second adsorption mechanism is connected to the adsorption holes, and the workpiece to be cut is adsorbed to the first surface through the adsorption holes.

[0049] The base is provided with adsorption holes so that the second adsorption mechanism can adsorb the workpiece to be cut onto the first surface.

[0050] In some embodiments, the first surface is provided with an adsorption area and an avoidance area, the adsorption holes are provided in the adsorption area, one side or two opposite sides of the adsorption area are provided with the avoidance area, and the avoidance area is used to avoid part of the workpiece to be cut.

[0051] With such arrangement, when the workpiece to be cut is a pole piece, the pole piece can be located on the first surface. The pole ear on the pole piece can be avoided in the avoidance area. In this way, the second adsorption mechanism can not adsorb the pole ear, thereby improving the problem of the pole ear being adsorbed and causing tearing, thereby realizing the protection of the workpiece to be cut.

[0052] In some embodiments, the slitting device further comprises a conveying mechanism, and the conveying mechanism is used to receive and convey the pieces to be cut after slitting.

[0053] The conveying mechanism can receive the cut pieces to be cut after being cut, and convey the cut pieces to be cut, so that the cut pieces to be cut can be separated from the cutter mechanism, and can be wound or further conveyed to a predetermined position.

[0054] In some embodiments, the slitting device further comprises a third adsorption mechanism, which is connected to the conveying mechanism and is used to adsorb the slitting pieces to be cut to the conveying mechanism.

[0055] The third adsorption mechanism can adsorb the cut pieces to the conveying mechanism, so that the cut pieces can move synchronously with the conveying mechanism, which makes it easier for the conveying mechanism to receive the cut pieces and to continue to transport the cut pieces to a predetermined position.

[0056] In a second aspect, an embodiment of the present application provides a winding device, comprising a winding mechanism and the slitting device, wherein the winding mechanism is used to wind the pieces to be cut after slitting.

[0057] The winding device provided in the embodiment of the present application adopts the above-mentioned slitting device, so that the cutter of the slitting device can move periodically with the moving part during the conveying process of the parts to be cut, so as to periodically cut the parts to be cut without affecting the normal conveying of the parts to be cut, thereby improving the winding efficiency of the parts to be cut. In this way, the winding efficiency of the products (such as electrode assemblies) formed by winding the parts to be cut can be improved, thereby improving the production efficiency of the electrode assemblies.

[0058] In some embodiments, the slitting device further comprises a conveying mechanism, wherein the conveying mechanism is used to receive and convey the pieces to be cut after slitting, and a conveying speed of the conveying mechanism is the same as a winding speed of the winding mechanism.

[0059] In this way, the linear speed of the workpiece to be cut after slitting is the same as the winding speed of the winding mechanism, so that the workpiece to be cut located at the conveying mechanism and the winding mechanism after slitting has a certain tension, which facilitates the winding of the workpiece to be cut by the winding mechanism and can improve the quality of the product (such as the electrode assembly) formed by winding the workpiece to be cut.

[0060] In a third aspect, an embodiment of the present application provides a battery processing device, including the slitting device or the winding device.

[0061] The battery processing equipment provided in the embodiment of the present application adopts the above-mentioned slitting device or winding device, so that the slitting device can periodically slit the pieces to be cut during the conveying process of the pieces to be cut without affecting the normal conveying of the pieces to be cut, thereby improving the winding efficiency of the pieces to be cut. In this way, the winding efficiency of the pieces to be cut to form the electrode assembly can be improved, thereby improving the production efficiency of the electrode assembly, and further improving the production efficiency of the battery.

[0062] In a fourth aspect, an embodiment of the present application provides a battery production line, including the battery processing equipment.

[0063] The battery production line provided in the embodiment of the present application can improve the production efficiency of batteries by adopting the battery processing equipment involved above.

[0064] In some embodiments, the battery processing equipment further comprises:

[0065] Assembly equipment for assembling electrode assemblies to form battery cells;

[0066] A stacking device is used to stack the battery cells to form a battery.

[0067] In this way, a battery can be processed.

[0068] In a fifth aspect, an embodiment of the present application provides a winding method, using the winding device, comprising:

[0069] The piece to be cut is conveyed, the winding mechanism is driven to wind the piece to be cut, and the moving member is driven to move periodically, so that the cutter moves periodically with the moving member to cut the piece to be cut periodically.

[0070] The winding method provided in the embodiment of the present application adopts a winding device, so that the cutter can periodically cut the workpiece to be cut during the conveying process of the workpiece to be cut, without stopping or slowing down the conveying operation and winding operation of the workpiece to be cut, thereby improving the winding efficiency of the workpiece to be cut, and further improving the production efficiency of the product (such as electrode assembly) formed by winding the workpiece to be cut.

[0071] 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

[0072] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 paying creative labor.

[0073] Figure 1 A schematic diagram of a battery processing device provided for some embodiments of the present application;

[0074] Figure 2 A three-dimensional structural diagram of a winding device provided in some embodiments of the present application;

[0075] Figure 3 A front view of a winding device provided for some embodiments of the present application;

[0076] Figure 4 for Figure 3 A top view of a base of the winding apparatus is provided;

[0077] Figure 5 A schematic diagram of a base and a first driving mechanism of a slitting device provided in some embodiments of the present application;

[0078] Figure 6 A schematic diagram of a limiting member and a second driving mechanism of a slitting device provided in some embodiments of the present application;

[0079] Figure 7 A schematic diagram of a stopper and a first adsorption mechanism provided in some embodiments of the present application;

[0080] Figure 8 for Figure 3 A schematic diagram of the cooperation between the second adsorption mechanism and the base of the winding device provided;

[0081] Fig. 9A schematic diagram of a third adsorption mechanism and a conveying mechanism provided in some embodiments of the present application;

[0082] Fig.10 A flow chart of a winding method provided for some embodiments of the present application.

[0083] Among them, the reference numerals in the figure are:

[0084] 1000-battery processing equipment; 2000-pieces to be cut; 100-winding equipment; 200-assembling equipment; 300-stacking equipment; 10-slitting device; 20-winding mechanism; 21-winding needle; 101-first gap; 102-second gap; 11-cutter mechanism; 111-moving part; 112-cutter; 12-base; 1201-first surface; 12011-adsorption area; 12012-avoidance area; 1202-knife groove; 1203-adsorption hole; 121-adsorption part; 122-non-adsorption part; 13-first driving mechanism; 14-limiting member; 1401-second surface; 15-second driving mechanism; 16-first adsorption mechanism; 17-second adsorption mechanism; 18-conveying mechanism; 19-third adsorption mechanism; Y-first direction; L1-first central axis; L2-second central axis; L3-third central axis. DETAILED DESCRIPTION

[0085] Embodiments of the present application are described in detail below, and examples of the embodiments 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.

[0086] In the description of the present 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 drawings, and are only for the convenience of describing the present 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 should not be understood as a limitation on the present application.

[0087] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0088] In the description of the present application, "plurality" means more than two, and unless otherwise clearly and specifically defined, "more than two" includes two. Accordingly, "multiple groups" means more than two groups, including two groups.

[0089] In the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0090] In the description of this application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists, A and B exist at the same time, and B exists. In addition, in this application, the character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0091] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned 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 includes all technical solutions falling within the scope of the claims.

[0092] In the related art, a battery cell includes a shell and an electrode assembly, and the electrode assembly is arranged in the shell. For a wound electrode assembly, the electrode assembly is mainly formed by winding a pole piece and a diaphragm. Specifically, the pole piece and the diaphragm are conveyed to a winding needle and wound by the winding needle to form an electrode assembly. Among them, the pole piece includes a positive pole piece and a negative pole piece, and the diaphragm is arranged between the positive pole piece and the negative pole piece to achieve insulation between the positive pole piece and the negative pole piece.

[0093] It should be noted that, during the winding process of the electrode assembly, the electrode sheet and the diaphragm are generally cut according to the required diameter of the electrode assembly to obtain the electrode sheet and the diaphragm of the required length. In this way, the winding needle can wind the electrode sheet and the diaphragm of the required length to obtain the electrode assembly of the required diameter.

[0094] In some cases, in order to smoothly cut the electrode pieces and diaphragms to be cut, it is necessary to first reduce the conveying speed of the pieces to be cut or stop the conveying of the pieces to be cut, and then move the cutter to the pieces to be cut and cut the pieces to be cut. Specifically, the conveying speed of the pieces to be cut is reduced or the conveying is stopped, so that the position of the pieces to be cut required to be cut is at a predetermined position, that is, the positioning of the pieces to be cut is achieved. In this way, the cutter can cut the pieces to be cut at the predetermined position.

[0095] Thus, during the process of the cutter cutting the workpieces, the workpieces need to be stopped or the conveying speed needs to be reduced, so that the winding operation of the workpieces will be slowed down or stopped, which will affect the winding efficiency of the winding equipment for the workpieces. Therefore, the winding efficiency of the electrode assembly will be affected, and further the production efficiency of the electrode assembly will be affected.

[0096] Based on the above considerations, in order to improve the problem of slow winding efficiency of the winding equipment, the embodiments of the present application provide a slitting device, a winding device and method, and a battery processing device, in which a cutter is arranged on a moving part and is used to move periodically with the moving part to periodically cut the pieces to be cut. Based on this, the movement cycle of the moving part can be set to the conveying time of the pieces to be cut of the required length. In this way, the cutter can move periodically with the moving part, and cut the pieces to be cut during the periodic movement of the moving part. Specifically, the cutter can cut the pieces to be cut in each movement cycle of the moving part, so that the pieces to be cut of the required length can be periodically cut out. With such a configuration, in the process of the cutter cutting the pieces to be cut, there is no need to reduce the conveying speed of the pieces to be cut or stop the conveying of the pieces to be cut, thereby improving the winding efficiency of the pieces to be cut. That is, the winding efficiency of the electrode assembly can be improved to improve the production efficiency of the electrode assembly.

[0097] Among them, winding equipment and method refer to winding equipment and winding method.

[0098] Although the slitting device involved in the embodiment of the present application is developed based on the problem of low winding efficiency that occurs during the winding process of the electrode assembly, its application scenario is not limited to this, and it can be applicable to any occasion where slitting is required. It can be understood that the slitting device involved in the embodiment of the present application can be used to perform slitting operations on pole pieces and diaphragms to be cut during the winding process of the electrode assembly, and can also be applied to other processing processes other than the winding process of the electrode assembly. The slitting device can be used to perform slitting operations on pole pieces and diaphragms, and can also be used to perform slitting operations on other parts to be cut except pole pieces and diaphragms. That is, the parts to be cut can be, but are not limited to, pole pieces and diaphragms.

[0099] The battery involved in the embodiment of the present application can be a single physical module including one or more battery cells to provide higher voltage and capacity. When there are multiple battery cells, the multiple battery cells are connected in series, in parallel or in hybrid connection through a busbar component. Hybrid connection means that multiple battery cells are connected in both series and in parallel.

[0100] In some embodiments, the battery may be a battery module. When there are multiple battery cells, the multiple battery cells are arranged and fixed to form a battery module. As an example, the multiple battery cells may be fixed by cable ties or the like to form a battery module. As an example, the multiple battery cells may also be fixed by end plates, side plates, or the like to form a battery module.

[0101] In other embodiments, the battery may be a battery pack, which may include a box and a battery cell. As an example, the battery cell may be directly accommodated in the box. As an example, the battery cell may also be formed into a battery module first and then accommodated in the box.

[0102] The battery cell involved in the embodiments of the present application refers to the smallest unit for storing and outputting electric energy. The battery cell may be a secondary battery or a primary battery. The battery cell may be, but is not limited to, a metal battery, a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery. The battery cell may be cylindrical, flat, rectangular, or in other shapes.

[0103] The battery cell may include a housing and an electrode assembly disposed in the housing. In the battery cell, the number of the electrode assemblies may be one or more.

[0104] The electrode assembly is a component in a battery cell where electrochemical reactions occur. Among them, the electrode assembly is mainly formed by winding a positive electrode sheet and a 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 a lug. The lug of the positive electrode sheet is the positive electrode lug, and the lug of the negative electrode sheet is the negative electrode lug. The positive electrode lug and the negative electrode lug can be located together at one end of the main body or respectively at opposite ends of the main body.

[0105] The battery processing equipment involved in the embodiments of the present application is mainly used for processing batteries.

[0106] In some embodiments, please refer to Figure 1 and Figure 2 , Figure 1 A schematic diagram of a battery processing device 1000 provided in some embodiments of the present application, Figure 2 A three-dimensional structural diagram of a winding device 100 provided in some embodiments of the present application. The battery processing device 1000 may include the winding device 100, which is used to wind the pole piece and the separator to form an electrode assembly.

[0107] The winding device 100 may include a slitting device 10. The slitting device 10 is used to slit the electrode sheet during the winding process of the electrode assembly; or, the slitting device 10 is used to slit the separator during the winding process of the electrode assembly; or, the slitting device 10 is used to slit the electrode sheet and the separator during the winding process of the electrode assembly. The electrode sheet may be a positive electrode sheet or a negative electrode sheet.

[0108] In some embodiments, Figure 1 As shown, the battery processing equipment 1000 may further include an assembly equipment 200, and the assembly equipment 200 is used to assemble the electrode assembly, the shell, etc. wound by the winding equipment 100 to obtain a battery cell.

[0109] In some embodiments, Figure 1 As shown, the battery processing equipment 1000 may further include a stacking equipment 300, and the stacking equipment 300 is used to stack a plurality of battery cells to form a battery.

[0110] In some embodiments, the battery processing equipment 1000 may also include equipment for making pole pieces, equipment for making diaphragms, etc.

[0111] The slitting device 10 involved in the embodiment of the present application is used to slit the piece 2000 to be cut, so as to cut out the piece 2000 to be cut of the required length. The slitting device 10 cuts out the piece 2000 to be cut of the required length, which means that the slitting device 10 cuts the piece 2000 to be cut to obtain the piece 2000 to be cut of the required length. The piece 2000 to be cut may be, but not limited to, an electrode piece or a diaphragm. The required length refers to the length of the piece 2000 to be cut that needs to be cut according to the situation, which may be, but not limited to, the length of the electrode piece of an electrode assembly or the length of the diaphragm of an electrode assembly.

[0112] In some embodiments, see Figure 2 The slitting device 10 provided in the embodiment of the present application may include a cutter mechanism 11. The cutter mechanism 11 includes a moving part 111 and a cutter 112 disposed on the moving part 111, and the cutter 112 is used to periodically move with the moving part 111 to periodically cut the piece 2000 to be cut.

[0113] The moving part 111 refers to a movable part, wherein the moving part 111 can perform linear motion, curvilinear motion, rotation, or even at least two of the linear motion, curvilinear motion, and rotation.

[0114] The cutter 112 refers to a cutting tool that can be used for cutting. The cutter 112 is arranged on the moving part 111 so that the cutter 112 can move synchronously with the moving part 111.

[0115] The cutter 112 is used to perform periodic motion with the moving part 111, which means that the moving part 111 can perform periodic motion, and the moving part 111 can drive the cutter 112 to move synchronously during the motion, so that the cutter 112 can perform periodic motion synchronously with the moving part 111. It can be understood that both the moving part 111 and the cutter 112 can perform periodic motion, and the motion cycle of the moving part 111 is the same as the motion cycle of the cutter 112, that is, the same motion cycle.

[0116] Periodicity refers to the periodic motion and continuous circulation of an object. Based on this, the cutter 112 periodically cuts the piece 2000 to be cut, which means that the cutter 112 cuts the piece 2000 to be cut in each motion cycle.

[0117] The cutter 112 is used to periodically move with the moving part 111 to periodically cut the piece to be cut 2000, which means that under the drive of the moving part 111, the cutter 112 can periodically move, and the cutter 112 can cut the piece to be cut 2000 during the movement, so as to periodically cut the piece to be cut 2000. Specifically, the cutter 112 cuts the piece to be cut 2000 in each movement cycle, so that the cutter 112 can periodically cut the piece to be cut 2000. It can be understood that the time between two adjacent cuttings of the piece to be cut 2000 by the cutter 112 is the cutting cycle of the cutter 112, that is, the movement cycle of the cutter 112 and the movement cycle of the moving part 111.

[0118] In the slitting device 10 provided in the embodiment of the present application, the cutter 112 is arranged on the moving part 111, and is used to move periodically with the moving part 111 to periodically cut the pieces to be cut 2000. Based on this, the movement cycle of the moving part 111 can be set to the conveying time of the pieces to be cut 2000 of the required length. In this way, the cutter 112 can move periodically with the moving part 111, and cut the pieces to be cut 2000 in the conveying process during the periodic movement of the moving part 111. Specifically, during the conveying process of the pieces to be cut 2000, the cutter 112 can cut the pieces to be cut 2000 in each movement cycle of the moving part 111, so that the pieces to be cut 2000 of the required length can be periodically cut. With such a configuration, during the process of the cutter 112 cutting the pieces to be cut 2000, there is no need to reduce the conveying speed of the pieces to be cut 2000 or stop the conveying of the pieces to be cut 2000. That is, the cutter 112 can move during the conveying process of the workpiece 2000 to periodically cut the workpiece 2000 without affecting the normal conveying of the workpiece 2000, thereby improving the winding efficiency of the workpiece 2000. In this way, the winding efficiency of the electrode assembly can be improved to improve the production efficiency of the electrode assembly.

[0119] It should be additionally explained here that the conveying time of the workpiece 2000 to be cut of a required length is the quotient of the required length and the linear speed of the workpiece 2000 to be cut.

[0120] For ease of description, in each embodiment of the present application, the time point at which the cutter 112 cuts the piece 2000 to be cut can be set to the time point at which the cutter 112 completes a periodic motion, that is, the time point at which the moving member 111 completes a periodic motion. That is, when the moving member 111 and the cutter 112 complete a periodic motion, the cutter 112 cuts the piece 2000 to be cut.

[0121] Specifically, when the piece 2000 to be cut is transported to the required length, the moving member 111 and the cutter 112 have just completed a cycle of motion, and the cutter 112 has just cut the piece 2000 to be cut, thereby cutting out the piece 2000 to be cut of the required length. Based on this, by continuously transporting the piece 2000 to be cut, the moving member 111 and the cutter 112 continuously perform cycle motion, so that the cutter 112 can cut out the piece 2000 to be cut of the required length in each motion cycle, thereby periodically cutting out the piece 2000 to be cut of the required length.

[0122] In some embodiments, see Figure 2 , and in combination with other drawings. The moving member 111 is configured to be rotatable.

[0123] In the process of the moving member 111 performing periodic motion, the moving member 111 can rotate continuously, or can rotate only after the cutter 112 cuts the piece 2000 to be cut. Based on this, the cutter 112 can at least rotate after cutting the piece 2000 to be cut.

[0124] When the moving part 111 rotates, the cutter 112 can rotate synchronously with the moving part 111 .

[0125] The central axis of the moving part 111 is the first central axis L1. The moving part 111 can rotate around the first central axis L1.

[0126] By adopting the above technical solution, the cutter 112 can rotate at least after cutting the piece to be cut 2000. Based on this, the cutter 112 can rotate immediately after cutting the piece to be cut 2000, so as to be separated from the piece to be cut 2000 as much as possible without blocking the piece to be cut 2000, so as to ensure the continuous conveying effect of the piece to be cut 2000 to a certain extent. That is, the cutting operation of the cutter 112 on the piece to be cut 2000 can not affect the conveying work of the piece to be cut 2000 as much as possible, and thus does not affect the winding efficiency of the piece to be cut 2000. In addition, the cutter 112 rotates at least after cutting the piece 2000 to be cut so as to be separated from the piece 2000 to be cut as much as possible without blocking the transportation of the piece 2000 to be cut. It can also improve the problem of bending, wrinkling, etc. caused by the cutter 112 after the piece 2000 to be cut is blocked. In this way, the flatness of the piece 2000 to be cut can be guaranteed to a certain extent, so as to ensure the quality of the piece 2000 to be cut and the product (such as electrode assembly) formed by winding the piece 2000 to be cut to a certain extent.

[0127] In some embodiments, see Figure 2 , and in combination with other drawings. The slitting cycle of the cutter 112 is the rotation cycle of the moving member 111.

[0128] The slitting cycle of the cutter 112 is the movement cycle of the moving part 111, and the slitting cycle of the cutter 112 is the rotation cycle of the moving part 111, so that the rotation cycle of the moving part 111 is the movement cycle of the moving part 111. That is, the moving part 111 can rotate periodically. Based on this, the cutter 112 can rotate periodically with the moving part 111, so that the movement cycle of the cutter 112 is the rotation cycle of the cutter 112. Among them, the cutter 112 can cut the pieces 2000 to be cut in the conveying process during the periodic rotation process.

[0129] Among some possible designs, such as Figure 2 As shown, the moving member 111 can only perform continuous periodic rotation in each movement cycle. Or, in other possible designs, the moving member 111 can not only perform continuous periodic rotation in each movement cycle, but also perform linear motion, curvilinear motion, etc. during the periodic rotation.

[0130] Such arrangement enables the moving member 111 to perform periodic rotation, and enables the cutter 112 to periodically rotate with the moving member 111. Based on this, during the conveying process of the piece 2000 to be cut, the cutter 112 can periodically rotate with the moving member 111, and cut the piece 2000 to be cut in each rotation cycle, thereby periodically cutting out the piece 2000 to be cut of a desired length.

[0131] The cutter 112 cuts the workpiece 2000 during the rotation process, so that the cutter 112 can quickly detach from the workpiece 2000 after cutting the workpiece 2000, without blocking the conveying of the workpiece 2000. In this way, the continuous conveying of the workpiece 2000 can be guaranteed to a certain extent, and the workpiece 2000 does not need to be decelerated or stopped during the cutting process, which can improve the winding efficiency of the workpiece 2000. In addition, the problem of bending, wrinkling, etc. of the workpiece 2000 being blocked by the cutter 112 after cutting can be improved to a certain extent, which helps to achieve quality protection of the workpiece 2000 to a certain extent, so as to improve the quality of the workpiece 2000 and the product (such as electrode assembly) formed by winding the workpiece 2000.

[0132] Based on the above structure, the moving part 111 can perform various types of periodic motions, as follows:

[0133] In some embodiments, Figure 2 As shown, the moving part 111 can only rotate continuously in each movement cycle. It can be understood that the cutter 112 rotates one circle with the moving part 111 every time the moving part 111 rotates one circle to cut the piece to be cut 2000 once. In this way, the cutter 112 can rotate periodically with the moving part 111 and cut the piece to be cut 2000 in each rotation cycle. Such a setting simplifies the periodic motion of the moving part 111, thereby facilitating the setting of the slitting device 10. In addition, it is convenient to control the periodic motion of the moving part 111 so that the motion cycle of the moving part 111 is the same as the conveying time of the required length of the piece to be cut 2000. In this way, it is convenient for the cutter 112 to perform the slitting operation of the piece to be cut 2000 to the required length during the conveying process of the piece to be cut 2000. In addition, the moving part 111 only needs to rotate periodically, so that the moving part 111 can realize periodic motion in a relatively narrow space, thereby helping to reduce the volume of the slitting device 10 and realize the miniaturization design of the winding device 100.

[0134] In other embodiments, the moving member 111 may not only rotate continuously but also perform linear motion, curvilinear motion, and the like in each motion cycle. Exemplarily, the slitting device 10 has a first station and a second station, and the moving member 111 may move between the first station and the second station. The moving member 111 moves from the first station to the second station, and then moves from the second station back to the first station, which is a cycle of the moving member 111. The movement of the moving member 111 between the first station and the second station may adopt at least one of linear motion, curvilinear motion, and the like.

[0135] Specifically, during the conveying process of the piece 2000 to be cut, the moving member 111 can move from the first station to the second station, and then move from the second station back to the first station, and the moving member 111 also completes a cycle of rotation at the same time. In this way, the moving member 111 completes a cycle of motion. At this time, the cutter 112 is located at the first station and cuts the piece 2000 to be cut.

[0136] In some other embodiments, the moving part 111 can perform discontinuous rotation in each movement cycle, and also perform linear motion, curvilinear motion and other motions. Among them, the slitting device 10 has a first station and a second station, and the moving part 111 can move between the first station and the second station. Specifically, during the conveying process of the piece 2000 to be cut, the moving part 111 can move from the first station to the second station, and then move back to the first station from the second station to complete a cycle of movement. At this time, the cutter 112 is located at the first station and cuts the piece 2000 to be cut. In addition, after the cutter 112 cuts the piece 2000 to be cut, the moving part 111 can be rotated immediately, so that the cutter 112 can quickly rotate with the moving part 111 and disengage from the piece 2000 to be cut, so as to facilitate the continuous conveying of the piece 2000 to be cut. The moving part 111 rotates discontinuously, that is, the moving part 111 rotates intermittently, and can be, but is not limited to, rotating after the cutter 112 cuts the to-be-cut piece 2000 each time. The moving part 111 can move between the first station and the second station in at least one of linear motion, curvilinear motion, and the like.

[0137] In some other embodiments, the moving part 111 may not rotate in each movement cycle, but may perform linear motion, curvilinear motion, or the like. The slitting device 10 has a first station and a second station, and the moving part 111 may move between the first station and the second station. Specifically, during the conveying process of the piece 2000 to be cut, the moving part 111 may move from the first station to the second station, and then move from the second station back to the first station to complete a cycle of movement. At this time, the cutter 112 is located at the first station and cuts the piece 2000 to be cut.

[0138] The above embodiment enables the moving member 111 to perform periodic motion, so that the cutter 112 can perform periodic motion along with the moving member 111, so as to periodically cut the pieces 2000 to be cut into pieces 2000 of a desired length during the conveying process of the pieces 2000 to be cut.

[0139] In some embodiments, please refer to Figure 2 and Figure 3 , and combined with other accompanying drawings. Figure 3The front view of the winding device 100 provided in some embodiments of the present application is specifically a schematic diagram of the winding device 100 in the first direction Y. The first direction Y is parallel to the first central axis L1. At least part of the cutter 112 is disposed on the outer peripheral surface of the moving part 111.

[0140] The outer peripheral surface of the moving member 111 refers to the outer peripheral surface of the moving member 111 disposed around the first central axis L1 .

[0141] By at least partially setting the cutter 112 on the outer peripheral surface of the moving part 111, when conveying the piece 2000 to be cut, the piece 2000 to be cut can pass through a position adjacent to the outer peripheral surface of the moving part 111, so that the cutter 112 can cut the piece 2000 to be cut while rotating with the moving part 111.

[0142] By making the workpiece 2000 to be cut pass through a position adjacent to the outer circumference of the moving member 111, the rotation direction of the side of the moving member 111 close to the workpiece 2000 to be cut can be made substantially the same as the conveying direction of the workpiece 2000 to be cut. In this way, the cutter 112 is arranged on the outer circumference of the moving member 111, so that when the cutter 112 rotates to a position adjacent to the workpiece 2000 to be cut, the rotation direction of the cutter 112 can also be substantially the same as the conveying direction of the workpiece 2000 to be cut, so that the cutter 112 can cut the workpiece 2000 to be cut in the conveying process during the movement process, and can also quickly separate from the workpiece 2000 to be cut after cutting the workpiece 2000 to avoid interfering with the continuous conveying of the workpiece 2000 to be cut as much as possible.

[0143] In some embodiments, please refer to Figure 2 and Figure 3 The moving part 111 may be in the shape of an axis, and the outer peripheral surface of the moving part 111 may be a cylindrical surface. During the conveying process, the piece 2000 to be cut may pass through the radial side of the moving part 111. The radial direction of the moving part 111 refers to the radial direction of the cylinder defined by the outer peripheral surface of the moving part 111.

[0144] In other embodiments, the outer peripheral surface of the moving part 111 may also be a prismatic surface or a surface of other shapes.

[0145] In other embodiments, the cutter 112 may also be disposed at other locations of the moving part 111 .

[0146] In some embodiments, please refer to Figure 2 and Figure 3, and in combination with other drawings. The slitting device 10 also includes a base 12, and the base 12 is provided with a first surface 1201. A first gap 101 is formed between the first surface 1201 and the moving member 111, and the first gap 101 is used for the passage of the piece 2000 to be cut. The cutter 112 is used to cooperate with the first surface 1201 to cut the piece 2000 to be cut.

[0147] The first surface 1201 refers to at least a portion of the surface of the base 12. The first surface 1201 is mainly used to pass the workpiece 2000 to be cut. Specifically, at least a portion of the workpiece 2000 to be cut can be located on the first surface 1201 and pass through the first surface 1201.

[0148] It should be noted that, during the conveying process of the piece 2000 to be cut, the piece 2000 to be cut can pass through the first surface 1201, specifically, through the first gap 101 formed by the interval between the first surface 1201 and the moving member 111. During the periodic movement of the cutter 112 with the moving member 111, when the moving member 111 and the cutter 112 complete a periodic movement, at least a portion of the cutter 112 can just move to the first gap 101 and cut the piece 2000 to be cut at the first gap 101. It can be understood that the cutter 112 can move periodically with the moving member 111, so that it can move to the first gap 101 in each movement cycle (periodically) to periodically cut the piece 2000 to be cut at the first gap 101.

[0149] By arranging the cutter 112 to cooperate with the first surface 1201 to cut the piece 2000 to be cut, the piece 2000 to be cut can be limited to the first surface 1201, so that the cutter 112 can cut the piece 2000 to be cut quickly and accurately.

[0150] In some embodiments, see Figure 4 , and combined with other drawings. Among them, Figure 4 The top view of the base 12 of the slitting device 10 provided in some embodiments of the present application. The first surface 1201 is provided with a knife groove 1202 , and the cutter 112 is used to be plugged into and matched with the knife groove 1202 to slitting the piece 2000 to be cut.

[0151] The knife groove 1202 is a groove for plugging and cooperating with the cutter 112 to cut the workpiece 2000. In some possible designs, for example Figure 4 As shown, the first surface 1201 is recessed to form the knife groove 1202 ; or, in some other possible designs, the first surface 1201 is provided with a convex structure, and the convex structure encloses to form the above-mentioned knife groove 1202 .

[0152] It should be noted that, during the conveying process of the piece 2000 to be cut, at least part of the piece 2000 to be cut is located on the first surface 1201 and covers the knife groove 1202 on the first surface 1201. When the moving member 111 and the cutter 112 complete a periodic motion, at least part of the cutter 112 just moves to the first gap 101, and the knife groove 1202 can also be located in the first gap 101. In this way, the cutter 112 can be plugged and matched with the knife groove 1202 at the first gap 101, so as to cut the piece 2000 to be cut covered by the knife groove 1202. It can be understood that the cutter 112 can move periodically with the moving member 111, so as to move to the first gap 101 in each movement cycle (periodically), so as to be plugged and matched with the knife groove 1202 at the first gap 101 in each movement cycle (periodically), so as to cut the piece 2000 to be cut.

[0153] The cutter 112 and the knife groove 1202 are plugged together to cut the piece 2000 to be cut, so that the reliability and accuracy of the cutter 112 in cutting the piece 2000 to be cut can be improved.

[0154] In some embodiments, please refer to Figures 2 to 4 , and in combination with other drawings. The base 12 is configured to be movable. In some possible designs, the base 12 is used to move with the piece to be cut 2000. Alternatively, in other possible designs, the base 12 is used to transport the piece to be cut 2000 through the first surface 1201.

[0155] The base 12 is used to move with the workpiece 2000 to be cut, which means that during the conveying process of the workpiece 2000 to be cut, the base 12 can move with the movement of the workpiece 2000 to be cut. Specifically, at least a portion of the workpiece 2000 to be cut is located on the first surface 1201 and is in frictional contact with the first surface 1201. During the conveying process of the workpiece 2000 to be cut, the workpiece 2000 to be cut can drive the base 12 to move through the frictional contact between the workpiece 2000 to be cut and the first surface 1201, so that the base 12 moves with the workpiece 2000 to be cut.

[0156] The base 12 is used to convey the workpiece 2000 to be cut through the first surface 1201, which means that the base 12 can move under the drive of an external force such as the first driving mechanism 13, manual driving, etc. mentioned below, so as to convey the workpiece 2000 to be cut through the first surface 1201. Specifically, at least part of the workpiece 2000 to be cut is located on the first surface 1201 and is in frictional contact with the first surface 1201. During the movement of the base 12 under the drive of an external force such as the first driving mechanism 13, manual driving, etc. mentioned below, the base 12 can drive the workpiece 2000 to be cut to move through the frictional contact between the workpiece 2000 to be cut and the first surface 1201, thereby realizing the conveyance of the workpiece 2000 to be cut. In this way, the base 12 can convey the workpiece 2000 to the first gap 101, so that the cutter 112 can periodically cut the workpiece 2000 to be cut in the first gap 101.

[0157] The base 12 can move with the workpiece 2000 during the conveying process of the workpiece 2000; or, the base 12 can convey the workpiece 2000 through the first surface 1201. In this way, the base 12 can move synchronously with the workpiece 2000. The base 12 and the workpiece 2000 move synchronously, which means that the linear speed of the workpiece 2000 during the conveying process is the same as the linear speed of the base 12, that is, the linear speed of the workpiece 2000 is the same as the linear speed of the first surface 1201.

[0158] During the conveying process of the piece 2000 to be cut, at least part of the piece 2000 to be cut is located on the first surface 1201 and covers the knife groove 1202 on the first surface 1201. In addition, the base 12 moves synchronously with the piece 2000 to be cut, so that the knife groove 1202 moves synchronously with the piece 2000 to be cut. When the moving member 111 and the cutter 112 complete a cycle of motion, at least part of the cutter 112 just moves to the first gap 101, and the knife groove 1202 and the piece 2000 to be cut covered at the knife groove 1202 can also move to the first gap 101. At this time, the cutter 112 can be inserted into the knife groove 1202 to cut the piece 2000 to be cut covered at the knife groove 1202.

[0159] Based on this, the linear speed of the piece 2000 to be cut can be determined by the linear speed of the base 12, and then the conveying time of the piece 2000 to be cut of the required length can be determined by the required length of the piece 2000 to be cut and the linear speed of the base 12, so as to determine the movement cycle of the moving member 111, that is, to determine the slitting cycle of the cutter 112. Such a configuration facilitates the determination of the movement cycle of the moving member 111 and the cutter 112, that is, to facilitate the determination of the slitting cycle of the cutter 112. Therefore, it is convenient for the cutter 112 to move periodically during the conveying process of the piece 2000 to be cut, so as to periodically cut the piece 2000 to be cut, without affecting the normal conveying of the piece 2000 to be cut, so as to improve the winding efficiency of the piece 2000 to be cut.

[0160] Correspondingly, the time for the knife groove 1202 to move to the first gap 101 can also be determined by the movement cycle of the moving part 111, so that when the moving part 111 and the cutter 112 complete a cycle of motion, the knife groove 1202 can just move to the first gap 101, so that the cutter 112 and the knife groove 1202 can be plugged into and matched to cut the piece 2000 to be cut at the first gap 101.

[0161] In some embodiments, please refer to Figure 2 and Figure 3 , and in combination with other drawings. The moving member 111 and the base 12 are both configured to be rotatable. The rotation direction of the base 12 is opposite to the rotation direction of the moving member 111, and the first surface 1201 is the outer peripheral surface of the base 12.

[0162] The base 12 is provided with a second central axis L2. The base 12 is provided to be rotatable, which means that the base 12 can rotate around the second central axis L2. The first central axis L1 and the second central axis L2 are provided in parallel.

[0163] The first surface 1201 of the base 12 and the outer peripheral surface of the moving part 111 are spaced apart to form the first gap 101 .

[0164] The outer peripheral surface of the base 12 refers to the outer peripheral surface of the base 12 arranged around the second central axis L2.

[0165] In some possible designs, the base 12 rotates clockwise, and the moving part 111 rotates counterclockwise. Alternatively, in other possible designs, the base 12 rotates counterclockwise, and the moving part 111 rotates clockwise. In this way, the base 12 rotates in the opposite direction to the moving part 111.

[0166] In some possible designs, during the conveying process of the workpiece 2000 to be cut, the frictional contact between the first surface 1201 and the workpiece 2000 to be cut can drive the base 12 to rotate, so that the base 12 can rotate with the workpiece 2000 to be cut. Alternatively, in some other possible designs, the base 12 can rotate under the drive of an external force, and through the friction between the first surface 1201 and the workpiece 2000 to be cut, the base 12 can drive the workpiece 2000 to be cut to move through the first surface 1201 during the rotation process to convey the workpiece 2000 to be cut, so that the base 12 can roll the workpiece 2000 to be cut during the rotation process. As described above, the base 12 can move synchronously with the workpiece 2000 to be cut. Specifically, at the contact position between the workpiece 2000 to be cut and the first surface 1201, the movement direction and movement speed of the base 12 and the workpiece 2000 to be cut are the same.

[0167] By setting the rotation direction of the base 12 to be opposite to the rotation direction of the moving member 111, the movement direction of the base 12 and the movement direction of the moving member 111 can be substantially the same at the first gap 101, so that the movement direction of the piece 2000 to be cut is substantially the same as the movement direction of the moving member 111 at the first gap 101. In this way, the cutter 112 is conveniently plugged into and matched with the knife groove 1202 on the first surface 1201 to cut the piece 2000 to be cut at the first gap 101. In addition, after cutting the piece 2000 to be cut, the cutter 112 is conveniently separated from the knife groove 1202 and the piece 2000 to be cut so as not to interfere with the movement of the base 12 and the piece 2000 to be cut. Such a setting facilitates the cutter 112 to cut the piece 2000 to be cut during the transportation process during the rotation process without affecting the transportation of the piece 2000 to be cut, and can improve the winding efficiency of the piece 2000 to be cut.

[0168] In some embodiments, the moving member 111 can rotate periodically, so that the cutter 112 can rotate periodically with the moving member 111 to the first gap 101, so as to periodically cut out the pieces 2000 to be cut of a desired length at the first gap 101.

[0169] In some embodiments, the first surface 1201 of the base 12 is a cylindrical surface. At least a portion of the workpiece 2000 to be cut is located on the first surface 1201 , specifically, at least a portion of the workpiece 2000 to be cut bypasses the first surface 1201 .

[0170] It should be noted that the specific structure of the base 12 can be various, including but not limited to the following:

[0171] In some embodiments, Figure 2 and Figure 3 As shown, the base 12 may be a rotating roller. The base 12 may be rotated by an external force such as the first driving mechanism 13, manual driving, etc., to roll the workpiece 2000 to be cut through the first surface 1201. Alternatively, the workpiece 2000 to be cut may drive the base 12 to rotate during the conveying process.

[0172] In other embodiments, the base 12 may be a belt conveyor mechanism, which includes a conveyor belt and a rotating shaft, the conveyor belt is wound around the rotating shaft, and the workpiece 2000 to be cut is located on the conveyor belt. The rotating shaft may be rotated by an external force such as the first driving mechanism 13 or manual driving mentioned below to drive the conveyor belt to move, thereby driving the workpiece 2000 to be cut to move through the conveyor belt to achieve the transportation of the workpiece 2000 to be cut. Alternatively, during the transportation of the workpiece 2000 to be cut, the workpiece 2000 to be cut may drive the conveyor belt to move, so that the rotating shaft rotates with the conveyor belt.

[0173] In some other possible designs, the base 12 can absorb the workpiece 2000 to be cut, and can be moved under the drive of external forces such as the first driving mechanism 13, manual drive, etc. Specifically, the base 12 can be moved under the drive of external forces to transport the workpiece 2000 to be cut absorbed on the base 12.

[0174] In some embodiments, the rotation period of the base 12 is the same as the rotation period of the moving member 111 .

[0175] It is understandable that when the moving member 111 and the cutter 112 complete a cycle of rotation, the base 12 also completes a cycle of rotation. Since the rotation cycle of the moving member 111 is the required length of the conveying time of the piece 2000 to be cut, the rotation cycle of the base 12 is also the required length of the conveying time of the piece 2000 to be cut.

[0176] In some possible designs, the base 12 can rotate with the workpiece 2000 to be cut; or, in other possible designs, the base 12 can transport the workpiece 2000 to be cut during the rotation process. In this way, the workpiece 2000 to be cut can move synchronously with the base 12. That is, the linear speed of the workpiece 2000 to be cut is the same as the rotation linear speed of the base 12.

[0177] Based on this, the rotation period of the base 12 is also the conveying time of the required length of the piece 2000 to be cut, and the linear speed of the piece 2000 to be cut is the same as the rotation linear speed of the base 12, so that the circumference of the outer surface of the base 12 is exactly the required length of the piece 2000 to be cut.

[0178] With such arrangement, the circumference of the outer surface of the base 12 can be determined by the required length of the workpiece 2000 to be cut, and the rotation period of the moving part 111 can be determined by the rotation period of the base 12. This facilitates the setting of the movement period of the moving part 111, so that the cutter 112 can move periodically with the moving part 111 to periodically cut out the workpiece 2000 to be cut of the required length.

[0179] It should be supplemented here that the number of the knife grooves 1202 on the first surface 1201 can be set to one. When the base 12 completes a cycle of rotation, the knife groove 1202 also just completes a cycle of rotation to rotate to the first gap 101. And, at this time, the moving part 111 also just completes a cycle of rotation, and the cutter 112 rotates to the first gap 101 to engage with the knife groove 1202 to cut the piece to be cut 2000. It can be understood that the cutter 112 can move periodically with the moving part 111 to move to the first gap 101 in each movement cycle (periodically), and the knife groove 1202 can also move periodically with the base 12 to move to the first gap 101 in each movement cycle (periodically), so that the cutter 112 can engage with the knife groove 1202 at the first gap 101 in each movement cycle (periodically) to periodically cut the piece to be cut 2000. Therefore, by determining whether the cutter 112 is plugged into and matched with the cutter groove 1202 , it can be determined whether the rotation periods of the base 12 and the moving part 111 are the same, which facilitates the setting of the rotation period of the moving part 111 .

[0180] In other embodiments, the rotation period of the base 12 may be different from the rotation period of the moving member 111. For example, the rotation period of the moving member 111 may be half the rotation period of the base 12. Based on this, half of the circumference of the base 12 is the required length of the piece 2000 to be cut. The number of the knife grooves 1202 may be two, and the two knife grooves 1202 may rotate alternately to the first gap 101 when the moving member 111 completes each cycle of rotation, so as to be plugged with the cutter 112 and cut the piece 2000 to be cut.

[0181] In some embodiments, see Figure 5 , and combined with other accompanying drawings. Figure 5 Schematic diagram of the first driving mechanism 13 and the base 12 of the slitting device 10 provided in some embodiments of the present application. The slitting device 10 also includes a first driving mechanism 13, the output end of the first driving mechanism 13 is connected to the base 12, and the first driving mechanism 13 is used to drive the base 12 to transport the piece 2000 to be cut.

[0182] The first driving mechanism 13 is a mechanism for driving the base 12 to move so that the base 12 can transport the workpiece 2000 to be cut.

[0183] The first driving mechanism 13 may be a mechanism for outputting a rotational drive to drive the base 12 to transport the workpiece 2000 to be cut. Alternatively, the first driving mechanism 13 may be a mechanism for outputting a linear drive.

[0184] When the first driving mechanism 13 is a mechanism for outputting a rotational drive, in some possible designs, the base 12 is a rotating roller, and the base 12 is connected to the output end of the first driving mechanism 13, so that it can rotate under the drive of the first driving mechanism 13, so as to roll the to-be-cut piece 2000 through the first surface 1201. In some other possible designs, the base 12 is a belt conveying mechanism, and the output end of the first driving mechanism 13 is connected to the rotating shaft of the belt conveying mechanism to drive the rotating shaft to rotate, so that the conveyor belt conveys the to-be-cut piece 2000. Based on this, as an example, the first driving mechanism 13 can be a motor, and the output end of the first driving mechanism 13 is the output shaft of the motor, that is, the output shaft of the motor is connected to the base 12. As another example, the first driving mechanism 13 can be a screw mechanism, and the output end of the first driving mechanism 13 is the screw of the screw mechanism, that is, the screw is connected to the base 12, so that the screw can drive the base 12 to rotate when it rotates. As another example, the first driving mechanism 13 can be a mechanism in which a motor and a gear set cooperate, and the output end of the first driving mechanism 13 can be a gear set, and the gear set is connected to the base 12.

[0185] When the first driving mechanism 13 is a mechanism for outputting a linear drive, in some possible designs, the base 12 can be used to adsorb the workpiece 2000 to be cut, and can move linearly as a whole under the drive of the first driving mechanism 13, so that the workpiece 2000 to be cut can be transported during the movement. Based on this, as an example, the first driving mechanism 13 can be a cylinder, and the output end of the first driving mechanism 13 is the output shaft of the cylinder, and the output shaft of the cylinder is connected to the base 12. As another example, the first driving mechanism 13 can be a screw mechanism, and the output end of the first driving mechanism 13 is the nut of the screw mechanism, that is, the screw is connected to the base 12.

[0186] By adopting the above technical solution, the base 12 can not only cooperate with the cutter 112 to cut the piece 2000 to be cut, but also the base 12 can transport the piece 2000 to be cut under the drive of the first driving mechanism 13. In this way, the base 12 can transport the piece 2000 to be cut to the first gap 101 under the drive of the first driving mechanism 13, so that the cutter 112 periodically cuts the piece 2000 to be cut in the first gap 101.

[0187] It should be additionally explained here that, in other embodiments, the base 12 can also transport the workpiece 2000 to be cut in a manually driven manner.

[0188] In some embodiments, please refer to Figure 2 and Figure 3, and in combination with other drawings. The slitting device 10 also includes a stopper 14, and the stopper 14 is spaced apart from the moving member 111. The stopper 14 is provided with a second surface 1401, and the first surface 1201 and the second surface 1401 are spaced apart to form a second gap 102. The second gap 102 is connected to the first gap 101, and the second gap 102 and the first gap 101 are used to sequentially pass the to-be-cut pieces 2000.

[0189] The limiting member 14 is a member used to limit the position of the workpiece 2000 to be cut together with the base 12. Specifically, the second surface 1401 of the limiting member 14 is spaced from the first surface 1201 of the base 12 to form a second gap 102. During the conveying process of the workpiece 2000 to be cut, the workpiece 2000 to be cut can pass through the second gap 102 to achieve the limiting of the position by the first surface 1201 and the second surface 1401.

[0190] The second surface 1401 refers to at least a portion of the surface of the stopper 14. The second surface 1401 is mainly used to pass the workpiece 2000 to be cut. Specifically, at least a portion of the workpiece 2000 to be cut can be located on the second surface 1401 and pass through the second surface 1401.

[0191] The second gap 102 refers to a gap formed between the limiting member 14 and the base 12 for passing the piece to be cut 2000. The second gap 102 is at least used to limit the piece to be cut 2000.

[0192] Based on this, during the conveying process of the workpiece 2000 to be cut, the workpiece 2000 to be cut first passes through the second gap 102 and then passes through the first gap 101 .

[0193] By adopting the above technical solution, the workpiece 2000 to be cut needs to pass through the second gap 102 during the conveying process, so as to achieve the limitation through the first surface 1201 and the second surface 1401. Under the limiting effect of the first surface 1201 and the second surface 1401, on the one hand, the workpiece 2000 to be cut can be better passed through the first gap 101 and fit on the first surface 1201, so that it is convenient for the cutter 112 to cooperate with the first surface 1201 of the base 12 to cut the workpiece 2000 to be cut. On the other hand, the workpiece 2000 to be cut can have a higher flatness, improve the problem of bending, wrinkling, etc. of the workpiece 2000 to be cut, and help improve the quality of the workpiece 2000 to be cut and the quality of the product (such as the electrode assembly) formed by winding the workpiece 2000 to be cut.

[0194] In some embodiments, the first surface 1201 and the second surface 1401 are used to cooperate in conveying the workpiece 2000 to be cut.

[0195] It can be understood that the first surface 1201 and the second surface 1401 are used to cooperate in conveying the piece 2000 to be cut, so that the piece 2000 to be cut can pass through the second gap 102 and the first gap 101 in sequence. In this way, the first surface 1201 and the second surface 1401 can cooperate to convey the piece 2000 to be cut to the first gap 101, so that the cutter 112 can periodically cut the piece 2000 to be cut at the first gap 101.

[0196] In some possible designs, the first surface 1201 is used to transport the workpiece 2000 to be cut, that is, the base 12 is used to transport the workpiece 2000 to be cut. Specifically, the base 12 can move under the drive of an external force such as the first driving mechanism 13 or manual drive, so as to drive the workpiece 2000 to be cut to move through the friction between the first surface 1201 and the workpiece 2000 to be cut, thereby realizing the transportation of the workpiece 2000 to be cut. Based on this, in the process of the base 12 transporting the workpiece 2000 to be cut, the limiting member 14 can move with the workpiece 2000 to be cut through the friction between the second surface 1401 and the workpiece 2000 to be cut, so as to improve the transportation flexibility and reliability of the workpiece 2000 to be cut. Alternatively, the limiting member 14 does not move with the workpiece 2000 to be cut. For example, the base 12 is a rotating roller, and the base 12 can be rotated by an external force such as the first driving mechanism 13 or manual drive to roll the piece 2000 to be cut through the first surface 1201, and the limiting member 14 can rotate along with the conveyance of the piece 2000 to be cut, that is, the first surface 1201 and the second surface 1401 cooperate to roll the piece 2000 to be cut.

[0197] In some other possible designs, such as Figure 2 and Figure 3 As shown, the second surface 1401 is used to transport the piece 2000 to be cut, that is, the stopper 14 is used to transport the piece 2000 to be cut. Specifically, the stopper 14 can move under the drive of an external force such as the second driving mechanism 15, manual drive, etc., which will be described below, so as to drive the piece 2000 to be cut to move through the friction between the second surface 1401 and the piece 2000 to be cut, thereby realizing the transportation of the piece 2000 to be cut. Based on this, in the process of the stopper 14 transporting the piece 2000 to be cut, the base 12 can move with the piece 2000 to be cut through the friction between the first surface 1201 and the piece 2000 to be cut, so as to improve the transportation flexibility and reliability of the piece 2000 to be cut. Alternatively, the base 12 does not move with the piece 2000 to be cut. For example, the limit member 14 is a rotating roller, and the limit member 14 can rotate under the drive of an external force such as the second driving mechanism 15 mentioned below, manual drive, etc., so as to roll the piece to be cut 2000 through the second surface 1401, and the base 12 can rotate with the piece to be cut 2000, that is, the first surface 1201 and the second surface 1401 cooperate to roll the piece to be cut 2000.

[0198] In some other possible designs, both the first surface 1201 and the second surface 1401 are used to transport the piece 2000 to be cut, that is, both the base 12 and the stopper 14 are used to transport the piece 2000 to be cut. Specifically, the base 12 can move under the drive of an external force such as the first driving mechanism 13, manual driving, etc., so as to drive the piece 2000 to be cut to move through the friction between the first surface 1201 and the piece 2000 to be cut. In addition, the stopper 14 can also move under the drive of an external force such as the second driving mechanism 15, manual driving, etc. mentioned below, so as to drive the piece 2000 to be cut to move through the friction between the second surface 1401 and the piece 2000 to be cut. Thus, the conveying of the piece 2000 to be cut is realized. For example, the stopper 14 and the moving member 111 can both rotate to roll the piece 2000 to be cut, that is, the first surface 1201 and the second surface 1401 cooperate to roll the piece 2000 to be cut.

[0199] Such arrangement enables the limit member 14 and the base 12 to cooperate in conveying the piece 2000 to be cut, that is, the first surface 1201 and the second surface 1401 can cooperate in conveying the piece 2000 to be cut, so as to convey the piece 2000 to be cut to the first gap 101, so as to facilitate the cutter 112 to periodically cut the piece 2000 to be cut at the first gap 101.

[0200] It should be supplemented that, in some other embodiments, the first surface 1201 and the second surface 1401 may not be used to transport the piece to be cut 2000, but the piece to be cut 2000 may be transported by other mechanisms to transport the piece to be cut 2000 to the first gap 101. Based on this, the first surface 1201 and the second surface 1401 are only used to limit the position of the piece to be cut 2000. In the process of transporting the piece to be cut 2000, the base 12 can move with the piece to be cut 2000; or, the limiting member 14 can move with the piece to be cut 2000; or, both the base 12 and the limiting member 14 can move with the piece to be cut 2000. In this way, the transportation flexibility and reliability of the piece to be cut 2000 can be improved. Of course, in the process of transporting the piece to be cut 2000, the base 12 and the limiting member 14 may not move with the piece to be cut 2000.

[0201] In some embodiments, please refer to Figure 2 and Figure 3 , and in combination with other drawings. The stopper 14 is configured to be movable. In some possible designs, the stopper 14 is used to move with the piece to be cut 2000. Alternatively, in some other possible designs, the stopper 14 is used to transport the piece to be cut 2000 through the second surface 1401.

[0202] The position-limiting member 14 is used to move with the workpiece 2000 to be cut, which means that during the conveying process of the workpiece 2000 to be cut, the position-limiting member 14 can move with the movement of the workpiece 2000 to be cut. Specifically, at least a portion of the workpiece 2000 to be cut is located on the second surface 1401 and is in frictional contact with the second surface 1401. During the conveying process of the workpiece 2000 to be cut, the workpiece 2000 to be cut can drive the position-limiting member 14 to move through the frictional contact between the workpiece 2000 to be cut and the second surface 1401, so that the position-limiting member 14 moves with the workpiece 2000 to be cut.

[0203] The limiting member 14 is used to convey the piece 2000 to be cut through the second surface 1401, which means that the limiting member 14 can move under the drive of an external force such as the second driving mechanism 15 or manual driving mentioned below, so as to convey the piece 2000 to be cut through the second surface 1401. Specifically, at least part of the piece 2000 to be cut is located on the second surface 1401 and is in frictional contact with the second surface 1401. During the movement of the limiting member 14 under the drive of an external force such as the second driving mechanism 15 or manual driving mentioned below, the limiting member 14 can drive the piece 2000 to be cut to move through the frictional contact between the piece 2000 to be cut and the second surface 1401, thereby realizing the conveying of the piece 2000 to be cut. In this way, the limiting member 14 can convey the piece 2000 to be cut to the second gap 102 and the first gap 101 in sequence, so that the cutter 112 can periodically cut the piece 2000 to be cut in the first gap 101.

[0204] The limiting member 14 can move with the piece to be cut 2000 during the conveying process of the piece to be cut 2000, so that the limiting member 14 can not only cooperate with the base 12 to limit the piece to be cut 2000, but also move with the piece to be cut 2000, thereby improving the conveying flexibility and reliability of the piece to be cut 2000, so as to facilitate the conveying of the piece to be cut 2000 to the first gap 101.

[0205] The limiting member 14 can convey the piece 2000 to be cut through the second surface 1401, so that the limiting member 14 can not only cooperate with the base 12 to limit the piece 2000 to be cut, but also convey the piece 2000 to be cut, so that the piece 2000 to be cut is conveyed to the first gap 101, thereby facilitating the cutter 112 to periodically cut the piece 2000 to be cut in the first gap 101.

[0206] It should be supplemented here that the stopper 14 can move with the piece to be cut 2000 during the conveying process of the piece to be cut 2000; or, the stopper 14 can move with the piece to be cut 2000 during the conveying process of the piece to be cut 2000. In this way, the stopper 14 can move synchronously with the piece to be cut 2000. The stopper 14 moves synchronously with the piece to be cut 2000, which means that the linear speed of the piece to be cut 2000 during conveying can be the same as the linear speed of the stopper 14, that is, the linear speed of the piece to be cut 2000 is the same as the linear speed of the second surface 1401.

[0207] In some embodiments, please refer to Figure 2 and Figure 3 The moving member 111 and the limiting member 14 are both configured to be rotatable, the rotation direction of the limiting member 14 is the same as the rotation direction of the moving member 111 , and the second surface 1401 is the outer peripheral surface of the limiting member 14 .

[0208] The limiting member 14 is provided with a third central axis L3. The limiting member 14 is provided to be rotatable, which means that the limiting member 14 can rotate around the third central axis L3. The third central axis L3 is provided in parallel with the first central axis L1.

[0209] The second surface 1401 of the limiting member 14 and the first surface 1201 of the base 12 are spaced apart to form the second gap 102 .

[0210] The outer peripheral surface of the limiting member 14 refers to the outer peripheral surface of the limiting member 14 arranged around the third central axis L3.

[0211] The rotation direction of the stopper 14 and the rotation direction of the moving part 111 are both clockwise, or the rotation direction of the stopper 14 and the rotation direction of the moving part 111 are counterclockwise, so that the rotation direction of the stopper 14 and the rotation direction of the moving part 111 are the same.

[0212] In some possible designs, during the conveying process of the piece 2000 to be cut, the frictional contact between the second surface 1401 and the piece 2000 to be cut can drive the limiting member 14 to rotate, so that the limiting member 14 can rotate with the piece 2000 to be cut. Alternatively, in some other possible designs, the limiting member 14 can rotate under the drive of an external force, and the friction between the second surface 1401 and the piece 2000 to be cut can drive the piece 2000 to be cut to move through the second surface 1401 during the rotation process to convey the piece 2000 to be cut, so that the limiting member 14 can roll the piece 2000 to be cut during the rotation process. As described above, the limiting member 14 can move synchronously with the piece 2000 to be cut. Among them, at the position where the limiting member 14 contacts the piece 2000 to be cut, the movement direction of the limiting member 14 is substantially the same as the movement direction of the piece 2000 to be cut. When the moving member 111 is close to the workpiece 2000 to be cut, the moving direction of the moving member 111 is substantially the same as the moving direction of the workpiece 2000 to be cut.

[0213] By setting the rotation direction of the limit member 14 to be the same as the rotation direction of the moving member 111, it is convenient for the piece 2000 to be cut to be conveyed to the first gap 101, and it is also convenient for the cutter 112 to cut the piece 2000 to be cut at the first gap 101 during the periodic movement of the moving member 111 without affecting the conveyance of the piece 2000 to be cut, thereby improving the winding efficiency of the piece 2000 to be cut.

[0214] In some embodiments, the second surface 1401 of the stopper 14 is a cylindrical surface. At least a portion of the piece 2000 to be cut is located on the second surface 1401 , specifically, at least a portion of the piece 2000 to be cut bypasses the second surface 1401 .

[0215] It should be additionally explained here that when the base 12 is configured to be rotatable, the rotation direction of the limiting member 14 is opposite to the rotation direction of the base 12 .

[0216] It should be noted that the specific structure of the limiter 14 can be various, including but not limited to the following:

[0217] Among some possible designs, such as Figure 2 and Figure 3 As shown, the stopper 14 may be a rotating roller. The stopper 14 may be rotated under the drive of an external force such as a second driving mechanism 15 or manual drive mentioned below, so as to roll the workpiece 2000 to be cut through the second surface 1401. Alternatively, the workpiece 2000 to be cut may drive the stopper 14 to rotate during the conveying process.

[0218] In some other possible designs, the stopper 14 can be a belt conveyor mechanism, which includes a conveyor belt and a rotating shaft, and the conveyor belt is wound around the rotating shaft. The rotating shaft can be rotated by an external force such as the second driving mechanism 15 mentioned below, manual driving, etc., to drive the conveyor belt to move, so that the conveyor belt can drive the workpiece 2000 to be cut to be transported. Alternatively, the workpiece 2000 to be cut can drive the conveyor belt to move during the transportation process, so that the rotating shaft rotates with the conveyor belt.

[0219] In some other possible designs, the stopper 14 can absorb the workpiece 2000 to be cut and can move under the drive of an external force. Specifically, the stopper 14 can move under the drive of an external force such as the second driving mechanism 15 mentioned below, manual driving, etc., to transport the workpiece 2000 to be cut absorbed on the stopper 14.

[0220] In some embodiments, see Figure 6 , and combined with other drawings. Among them, Figure 6 Schematic diagram of the second driving mechanism 15 and the limiting member 14 of the slitting device 10 provided in some embodiments of the present application. The slitting device 10 also includes a second driving mechanism 15, the output end of the second driving mechanism 15 is connected to the limiting member 14, and the second driving mechanism 15 is used to drive the limiting member 14 to convey the piece 2000 to be cut.

[0221] The second driving mechanism 15 is a mechanism for driving the limiting member 14 to move so that the base 12 conveys the workpiece 2000 to be cut.

[0222] The second driving mechanism 15 may be a mechanism for outputting a rotational drive to drive the base 12 to transport the workpiece 2000 to be cut. Alternatively, the second driving mechanism 15 may be a mechanism for outputting a linear drive.

[0223] When the second driving mechanism 15 is a mechanism for outputting a rotational drive, in some possible designs, the stopper 14 is a rotating roller, and the stopper 14 is connected to the output end of the second driving mechanism 15, so that it can rotate under the drive of the second driving mechanism 15, so as to roll the to-be-cut piece 2000 through the second surface 1401. In some other possible designs, the stopper 14 is a belt conveying mechanism, and the output end of the second driving mechanism 15 is connected to the rotating shaft of the belt conveying mechanism to drive the rotating shaft to rotate, so that the conveyor belt conveys the to-be-cut piece 2000. Based on this, as an example, the second driving mechanism 15 can be a motor, and the output end of the second driving mechanism 15 is the output shaft of the motor, that is, the output shaft of the motor is connected to the stopper 14. As another example, the second driving mechanism 15 can be a screw mechanism, and the output end of the second driving mechanism 15 is the screw of the screw mechanism, that is, the screw is connected to the stopper 14, so that the screw can drive the stopper 14 to rotate when it rotates. As another example, the second driving mechanism 15 may be a mechanism in which a motor and a gear set cooperate with each other, and the output end of the second driving mechanism 15 may be a gear set, and the gear set is connected to the limiting member 14 .

[0224] When the second driving mechanism 15 is a mechanism for outputting linear drive, in some possible designs, the stopper 14 can be used to absorb the workpiece 2000 to be cut, and can move linearly as a whole under the drive of the second driving mechanism 15, so as to transport the workpiece 2000 to be cut during the movement. Based on this, as an example, the second driving mechanism 15 can be a cylinder, and the output end of the second driving mechanism 15 is the output shaft of the cylinder, and the output shaft of the cylinder is connected to the stopper 14. As another example, the second driving mechanism 15 can be a screw mechanism, and the output end of the second driving mechanism 15 is the nut of the screw mechanism, that is, the screw is connected to the stopper 14.

[0225] By adopting the above technical solution, the limiting member 14 can not only cooperate with the base 12 to limit the piece to be cut 2000, but also can convey the piece to be cut 2000 under the drive of the second driving mechanism 15. In this way, the limiting member 14 can convey the piece to be cut 2000 to the first gap 101 under the drive of the second driving mechanism 15, so that the cutter 112 periodically cuts the piece to be cut 2000 in the first gap 101.

[0226] It should be additionally explained here that, in other embodiments, the limiting member 14 can also convey the workpiece 2000 to be cut in a manually driven manner.

[0227] In some embodiments, see Figure 7 , and combined with other drawings. Among them, Figure 7Schematic diagram of the limiting member 14 and the first adsorption mechanism 16 of the slitting device 10 provided in some embodiments of the present application. The slitting device 10 also includes the first adsorption mechanism 16, which is arranged on the limiting member 14 and is used to adsorb the workpiece 2000 to be cut on the second surface 1401.

[0228] The first adsorption mechanism 16 refers to a mechanism that can be used to adsorb the workpiece 2000 to be cut. Specifically, the first adsorption mechanism 16 adsorbs the workpiece 2000 to be cut onto the second surface 1401 .

[0229] The first adsorption mechanism 16 can use but is not limited to vacuum adsorption to adsorb the workpiece 2000 to the second surface 1401. Specifically, the second surface 1401 of the stopper 14 is provided with a vacuum hole, and the first adsorption mechanism 16 is a vacuum machine, and the first adsorption mechanism 16 is connected to the vacuum hole, so that the workpiece 2000 to be cut can be adsorbed to the second surface 1401 through the vacuum hole.

[0230] The first adsorption mechanism 16 can adsorb the workpiece 2000 to the second surface 1401, so that the workpiece 2000 can move synchronously with the stopper 14. In this way, the stopper 14 can move with the workpiece 2000; or, the stopper 14 can transport the workpiece 2000. This arrangement facilitates the flexible and reliable transport of the workpiece 2000 to the first gap 101, so that the cutter 112 can periodically cut the workpiece 2000 at the first gap 101.

[0231] In some embodiments, the first adsorption mechanism 16 is used to adsorb the workpiece 2000 to be cut on the second surface 1401. Thus, the stopper 14 can move with the workpiece 2000 to be cut; or, the stopper 14 can transport the workpiece 2000 to be cut. The first adsorption mechanism 16 is also used to remove the adsorption of the workpiece 2000 to be cut, so that the workpiece 2000 to be cut is separated from the second surface 1401 and transported to the first gap 101.

[0232] Specifically, when the slitting device 10 is working, the first adsorption mechanism 16 can adsorb the workpiece 2000 to be cut, so that the workpiece 2000 to be cut is adsorbed on the second surface 1401. In this way, the workpiece 2000 to be cut can move synchronously with the stopper 14, so that the workpiece 2000 to be cut can be transported to the second gap 102. When the workpiece 2000 to be cut is transported to the second gap 102, the first adsorption mechanism 16 removes the adsorption of the workpiece 2000 to be cut at the second gap 102, so that the workpiece 2000 to be cut at the second gap 102 can be separated from the second surface 1401, so that the workpiece 2000 to be cut can continue to be transported to the first gap 101.

[0233] Such an arrangement facilitates the flexible and reliable delivery of the pieces 2000 to be cut to the first gap 101 , so that the cutter 112 can periodically cut the pieces 2000 to be cut at the first gap 101 .

[0234] In some embodiments, see Figure 8 , and combined with other drawings. Among them, Figure 8 The slitting device 10 further includes a second adsorption mechanism 17, which is disposed on the base 12 and is used to adsorb the workpiece 2000 to be cut on the first surface 1201.

[0235] The second adsorption mechanism 17 refers to a mechanism that can be used to adsorb the workpiece 2000 to be cut. Specifically, the second adsorption mechanism 17 adsorbs the workpiece 2000 to be cut on the first surface 1201 of the base 12. The second adsorption mechanism 17 can use but is not limited to vacuum adsorption to adsorb the workpiece 2000 to be cut on the first surface 1201, for example, the second adsorption mechanism 17 is a vacuum machine.

[0236] The second adsorption mechanism 17 can adsorb the workpiece 2000 to the first surface 1201, so that the workpiece 2000 can preferably move synchronously with the base 12. In this way, it is convenient for the base 12 to move with the workpiece 2000 to be cut, or it is convenient for the base 12 to transport the workpiece 2000 to be cut. Such a configuration facilitates the flexible and reliable transportation of the workpiece 2000 to be cut to the first gap 101, so that the cutter 112 can periodically cut the workpiece 2000 to be cut at the first gap 101. In addition, by adsorbing the workpiece 2000 to the first surface 1201, it is convenient for the cutter 112 to cut the workpiece 2000 to be cut in cooperation with the first surface 1201, and it can also improve the problem of bending and wrinkling of the workpiece 2000 to be cut.

[0237] In some embodiments, see Figure 8 , and in combination with other drawings. The second adsorption mechanism 17 is used to adsorb the workpiece 2000 to be cut on the first surface 1201. Thus, the base 12 can move with the workpiece 2000 to be cut; or, the base 12 can transport the workpiece 2000 to be cut. The second adsorption mechanism 17 is also used to remove the adsorption of the workpiece 2000 to be cut, so that the workpiece 2000 to be cut after cutting can be separated from the base 12.

[0238] Specifically, when the slitting device 10 is working, the second adsorption mechanism 17 can adsorb the unslit pieces 2000 to be cut, so that the unslit pieces 2000 to be cut are adsorbed on the first surface 1201 of the base 12. In this way, the unslit pieces 2000 to be cut can move synchronously with the base 12, so that the unslit pieces 2000 to be cut can pass through the second gap 102 and the first gap 101 in sequence. Based on this, the cutter 112 can periodically move to the first gap 101 to slitting the pieces 2000 to be cut in the first gap 101. In addition, the second adsorption mechanism 17 can remove the adsorption of the slitting pieces 2000 to be cut, so that the slitting pieces 2000 to be cut can be separated from the base 12, so that the slitting pieces 2000 to be cut can be wound to form an electrode assembly or continue to be transported to a predetermined position.

[0239] Such a configuration facilitates the flexible and reliable delivery of the uncut pieces 2000 to be cut to the first gap 101, so that the cutter 112 can periodically cut the pieces 2000 to be cut at the first gap 101. Moreover, by adsorbing the uncut pieces 2000 to be cut on the first surface 1201, it is also convenient for the cutter 112 to cut the pieces 2000 to be cut in cooperation with the first surface 1201, and it can also improve the problem of bending and wrinkling of the pieces 2000 to be cut. In addition, it is also convenient for the cut pieces 2000 to be separated from the base 12 after cutting and to be wound to form an electrode assembly or to continue to be transported to a predetermined position.

[0240] In some embodiments, see Figure 8 The second adsorption mechanism 17 is movably connected to the base 12, and the second adsorption mechanism 17 is used to move with the base 12 to adsorb the uncut pieces 2000. The second adsorption mechanism 17 is also used to move relative to the base 12 to remove the adsorption of the cut pieces 2000.

[0241] Specifically, when the slitting device 10 is working, the second adsorption mechanism 17 can adsorb the unslit pieces 2000 to be cut on the first surface 1201. In addition, when the base 12 moves with the pieces 2000 to be cut or the base 12 transports the pieces 2000 to be cut, the base 12 moves synchronously with the pieces 2000 to be cut, and the second adsorption mechanism 17 also moves with the base 12, so that the unslit pieces 2000 to be cut can move synchronously with the base 12 in a state of being adsorbed on the first surface 1201, and are transported to the second gap 102 and the first gap 101 in sequence. Based on this, the cutter 112 can periodically slit the pieces 2000 to be cut at the first gap 101. Then, the second adsorption mechanism 17 resets relative to the base 12 to move away from the slit pieces 2000 to be cut, thereby removing the adsorption of the slit pieces 2000 to be cut, so that the slit pieces 2000 to be cut can be separated from the base 12. Then, the second adsorption mechanism 17 can continue to cooperate with the base 12 to adsorb the uncut pieces 2000 to be cut, so that the uncut pieces 2000 to be cut move synchronously with the base 12 in a state of being adsorbed on the first surface 1201, and are thus transported to the second gap 102 and the first gap 101 in sequence, and then the second adsorption mechanism 17 resets relative to the base 12... and so on.

[0242] By adopting the above technical solution, the second adsorption mechanism 17 can adsorb the uncut pieces 2000 to be cut, so that the uncut pieces 2000 can be transported to the first gap 101. In addition, the second adsorption mechanism 17 can also remove the adsorption of the cut pieces 2000 to be cut, so that the cut pieces 2000 can be separated from the base 12.

[0243] In some embodiments, see Figure 8 , and combined with other drawings. Among them, the base 12 is configured to be rotatable. At least a portion of the second adsorption mechanism 17 is disposed in the base 12 to divide the base 12 into an adsorption portion 121 and a non-adsorption portion 122. At least a portion of the second adsorption mechanism 17 is used to rotate with the base 12. At least a portion of the second adsorption mechanism 17 is also used to rotate relative to the base 12 to adjust the positions of the adsorption portion 121 and the non-adsorption portion 122. Thereby, the adsorption portion 121 is opposite to at least a portion of the uncut piece 2000 to be cut, and the non-adsorption portion 122 is opposite to at least a portion of the cut piece 2000 to be cut.

[0244] It can be understood that at least a portion of the second adsorption mechanism 17 divides the base 12 into two parts, namely the adsorption part 121 and the non-adsorption part 122 . Figure 8 In the figure, the adsorption part 121 and the non-adsorption part 122 are divided by dotted lines.

[0245] The suction portion 121 refers to a portion of the base 12 for adsorbing the workpiece 2000. Specifically, the second suction mechanism 17 is located at the suction portion 121 and cooperates with the suction portion 121, so that the second suction mechanism 17 can adsorb the workpiece 2000 to the first surface 1201 on the suction portion 121.

[0246] The non-adsorption portion 122 refers to a portion of the base 12 that is not used to cooperate with the adsorption of the workpiece 2000 to be cut. Specifically, the second adsorption mechanism 17 is not located in the non-adsorption portion 122, and the non-adsorption portion 122 does not cooperate with the second adsorption mechanism 17, so that the second adsorption mechanism 17 does not adsorb the workpiece 2000 to be cut on the first surface 1201 on the non-adsorption portion 122.

[0247] It should be noted that the adsorption portion 121 and the non-adsorption portion 122 of the base 12 are variable. At least part of the second adsorption mechanism 17 rotates in the base 12, which can change the division of the adsorption portion 121 and the non-adsorption portion 122 of the base 12, that is, change the position of the adsorption portion 121 and the non-adsorption portion 122 of the base 12. It can be understood that the second adsorption mechanism 17 rotates relative to the base 12, so that the second adsorption mechanism 17 can be rotated to any part of the base 12 to cooperate with this part of the base 12 to achieve an adsorption effect on the workpiece 2000 to be cut, and this part of the base 12 is divided into the adsorption portion 121, and the other part of the base 12 is the non-adsorption portion 122. Based on this, the adsorption part 121 of the base 12 can be determined according to the part of the workpiece 2000 to be cut that needs to be adsorbed. Specifically, the part of the base 12 opposite to the part of the workpiece 2000 to be cut that needs to be adsorbed is determined as the adsorption part 121; then the second adsorption mechanism 17 is rotated so that the second adsorption mechanism 17 is rotated to the adsorption part 121, that is, the adsorption part 121 and the non-adsorption part 122 are redivided, and the second adsorption mechanism 17 can adsorb the workpiece 2000 to be cut opposite to the adsorption part 121.

[0248] As an example, Figure 8 As shown, the adsorption part 121 is opposite to and fits with the second adsorption mechanism 17, so that the second adsorption mechanism 17 can cooperate with the adsorption part 121 to adsorb the workpiece 2000 to be cut, so that the workpiece 2000 to be cut can be adsorbed on the first surface 1201 on the adsorption part 121. Correspondingly, the non-adsorption part 122 is not fitted with the second adsorption mechanism 17, so that the second adsorption mechanism 17 cannot adsorb the workpiece 2000 to be cut on the first surface 1201 on the non-adsorption part 122. Based on this, the adsorption part 121 of the base 12 can be determined according to which part of the base 12 the part of the workpiece 2000 to be adsorbed is opposite to, and then the second adsorption mechanism 17 is rotated so that the second adsorption mechanism 17 is fitted with the adsorption part 121, and the remaining part of the base 12 is the non-adsorption part 122.

[0249] The adsorption portion 121 is opposite to at least a portion of the uncut workpiece 2000 , so that the second adsorption mechanism 17 can adsorb the uncut workpiece 2000 onto the first surface 1201 of the adsorption portion 121 .

[0250] The non-adsorption portion 122 is opposite to at least a portion of the cut pieces 2000 , so that the second adsorption mechanism 17 cannot adsorb the cut pieces 2000 onto the first surface 1201 of the non-adsorption portion 122 .

[0251] Based on the above structure, the position of the second adsorption mechanism 17 can be adjusted so that the second adsorption mechanism 17 divides the base 12 into an adsorption part 121 and a non-adsorption part 122. Moreover, the adsorption part 121 is opposite to at least a portion of the uncut pieces 2000 to be cut, so that the second adsorption mechanism 17 can adsorb the uncut pieces 2000 to be cut to the adsorption part 121. In the process that the base 12 moves with the pieces 2000 to be cut or the base 12 transports the pieces 2000 to be cut, the base 12 moves synchronously with the pieces 2000 to be cut, and the second adsorption mechanism 17 also rotates with the base 12, so that the uncut pieces 2000 to be cut can move synchronously with the base 12 in a state of being adsorbed on the adsorption part 121, and are transported to the second gap 102 and the first gap 101 in sequence. Based on this, the cutter 112 can periodically cut the pieces 2000 to be cut at the first gap 101. Then, the second adsorption mechanism 17 is reset and rotated relative to the base 12 to re-divide the adsorption portion 121 and the non-adsorption portion 122, so that the adsorption portion 121 is opposite to at least a portion of the uncut workpiece 2000, and the non-adsorption portion 122 is opposite to at least a portion of the cut workpiece 2000. At this time, the second adsorption mechanism 17 is away from the cut workpiece 2000 and does not adsorb the cut workpiece 2000, so that the second adsorption mechanism 17 removes the adsorption of the cut workpiece 2000, so that the cut workpiece 2000 can be separated from the base 12. Then, the second adsorption mechanism 17 can continue to cooperate with the adsorption part 121 to adsorb the uncut pieces 2000 to be cut, so that the uncut pieces 2000 to be cut can be transported to the second gap 102 and the first gap 101 in sequence in the state of being adsorbed on the adsorption part 121, and then, the second adsorption mechanism 17 is reset and rotated relative to the base 12 to remove the adsorption of the cut pieces 2000 to be cut... and so on.

[0252] Such arrangement enables the second adsorption mechanism 17 to adsorb the uncut pieces 2000 to facilitate the conveyance of the uncut pieces 2000. Moreover, the second adsorption mechanism 17 can also remove the adsorption of the cut pieces 2000 to facilitate the separation of the cut pieces 2000 from the base 12.

[0253] In some embodiments, Figure 8 As shown, the base 12 is in a sleeve shape. At least a portion of the second adsorption mechanism 17 is disposed in the base 12 and is coaxially disposed with the base 12 .

[0254] In some embodiments, the second adsorption mechanism 17 may move relative to the base 12 in a manner other than rotation, but may be at least one of linear movement, curved movement, etc. Based on this, the second adsorption mechanism 17 may also re-divide the base 12 into the adsorption portion 121 and the non-adsorption portion 122 after the movement.

[0255] In some embodiments, the first adsorption mechanism 16 is movably connected to the stopper 14. The first adsorption mechanism 16 is used to move with the stopper 14. The first adsorption mechanism 16 is also used to move relative to the stopper 14 to remove the adsorption of the to-be-cut piece 2000 at the second gap 102.

[0256] When the slitting device 10 is working, the first adsorption mechanism 16 can adsorb the workpiece 2000 to be cut on the second surface 1401. In the process that the stopper 14 moves with the workpiece 2000 to be cut or the stopper 14 transports the workpiece 2000 to be cut, the stopper 14 moves synchronously with the workpiece 2000 to be cut, and the first adsorption mechanism 16 also moves with the stopper 14, so that the workpiece 2000 to be cut can be transported to the second gap 102 in a state of being adsorbed on the second surface 1401. Then, the first adsorption mechanism 16 resets to remove the adsorption of the workpiece 2000 to be cut at the second gap 102, so that the workpiece 2000 to be cut continues to be transported to the first gap 101. Then, the first adsorption mechanism 16 can continue to adsorb the workpiece 2000 to the second surface 1401 of the stopper 14, so that the workpiece 2000 to be cut continues to be transported to the second gap 102 in a state of being adsorbed on the second surface 1401, and then the first adsorption mechanism 16 moves relative to the stopper 14 again... and so on.

[0257] Such an arrangement facilitates the delivery of the workpiece 2000 to be cut to the second gap 102 and the first gap 101 in sequence.

[0258] In some embodiments, at least a portion of the first adsorption mechanism 16 may also be disposed in the limiting member 14 to divide the limiting member 14 into the above-mentioned adsorption portion 121 and the non-adsorption portion 122. The first adsorption mechanism 16 is used to rotate with the limiting member 14, so that the first adsorption mechanism 16 cooperates with the adsorption portion 121 to adsorb the workpiece 2000 to be cut, so that the workpiece 2000 to be cut can be transported to the second gap 102 in a state of being adsorbed on the second surface 1401. The first adsorption mechanism 16 is also used to rotate relative to the limiting member 14 to adjust the position of the adsorption portion 121 and the non-adsorption portion 122, so that the non-adsorption portion 122 is opposite to the workpiece 2000 to be cut at the second gap 102, so that the first adsorption mechanism 16 removes the adsorption of the workpiece 2000 to be cut at the second gap 102, so that the workpiece 2000 to be cut at the second gap 102 can be easily separated from the limiting member 14.

[0259] Such an arrangement facilitates the delivery of the workpiece 2000 to be cut to the second gap 102 and the first gap 101 in sequence.

[0260] In some embodiments, please refer to Figure 4 and Figure 8 The first surface 1201 is provided with adsorption holes 1203 , and the second adsorption mechanism 17 is connected to the adsorption holes 1203 , and adsorbs the to-be-cut piece 2000 to the first surface 1201 through the adsorption holes 1203 .

[0261] The adsorption hole 1203 refers to a hole that is set through the base 12 and is used to cooperate with the second adsorption mechanism 17 to adsorb the workpiece 2000 to be cut.

[0262] The base 12 is provided with adsorption holes 1203 so that the second adsorption mechanism 17 can adsorb the workpiece 2000 to be cut onto the first surface 1201 .

[0263] In some embodiments, please refer to Figure 4 and Figure 8 , and in combination with other drawings. The first surface 1201 may be provided with a plurality of adsorption holes 1203 , and the plurality of adsorption holes 1203 are distributed on the first surface 1201 at intervals.

[0264] The plurality of adsorption holes 1203 may be distributed on the first surface 1201 in an array, or may be distributed on the first surface 1201 in a manner that the center points of three adjacent adsorption holes 1203 can be connected to form an equilateral triangle, or in other manners. This helps to evenly distribute the plurality of adsorption holes 1203, so as to achieve balanced adsorption of the workpiece 2000.

[0265] In some embodiments, the cross-section of the adsorption hole 1203 may be circular, triangular, prism-shaped, or the like.

[0266] In some embodiments, please refer to Figure 4 and Figure 8 , and in combination with other drawings. The first surface 1201 is provided with an adsorption area 12011 and an avoidance area 12012, and the adsorption hole 1203 is provided in the adsorption area 12011. In some possible designs, such as Figure 4 and Figure 8 As shown, two opposite sides of the adsorption area 12011 are provided with avoidance areas 12012; or, in some other possible designs, one side of the adsorption area 12011 is provided with an avoidance area 12012. The avoidance area 12012 is used to avoid part of the workpiece 2000 to be cut.

[0267] It can be understood that the adsorption area 12011 is provided with adsorption holes 1203 for adsorbing the workpiece 2000 to be cut. The avoidance area 12012 is not provided with adsorption holes 1203 and is not used for adsorbing the workpiece 2000 to be cut.

[0268] In this way, when the workpiece 2000 to be cut is a pole piece, the pole piece can be located on the first surface 1201. The pole ear on the pole piece can be avoided in the avoidance area 12012. In this way, the second adsorption mechanism 17 can not adsorb the pole ear, so as to improve the problem of the pole ear being adsorbed and causing tearing, thereby realizing the protection of the workpiece 2000 to be cut.

[0269] In some embodiments, Figure 4 and Figure 8 As shown, the avoidance area 12012 is disposed on both opposite sides of the adsorption area 12011 along the first direction Y. Alternatively, the avoidance area 12012 is disposed on one side of the adsorption area 12011 along the first direction Y.

[0270] The first direction Y is parallel to the first central axis L1.

[0271] In some embodiments, please refer to Figure 2 and Figure 3 , and in combination with other drawings. The slitting device 10 further includes a conveying mechanism 18, and the conveying mechanism 18 is used to receive and convey the slitting pieces 2000.

[0272] The conveying mechanism 18 refers to a mechanism for conveying the pieces to be cut 2000 after being cut.

[0273] In some possible designs, the conveying mechanism 18 may be a belt conveying mechanism, and the slit pieces 2000 to be cut may be located on a conveyor belt of the belt conveying mechanism to be conveyed by the movement of the conveyor belt. In other possible designs, the conveying mechanism 18 may include a rotating roller, which may be used to receive and roll the slit pieces 2000 to be cut.

[0274] The conveying mechanism 18 can receive the cut pieces 2000 and convey the cut pieces 2000 so that the cut pieces 2000 can be separated from the cutter mechanism 11 and wound or further conveyed to a predetermined position.

[0275] In some embodiments, see Fig. 9 , and combined with other drawings. Among them, Fig. 9 Schematic diagram of the conveying mechanism 18 and the third adsorption mechanism 19 of the slitting device 10 provided in some embodiments of the present application. The slitting device 10 also includes a third adsorption mechanism 19, which is connected to the conveying mechanism 18 and is used to adsorb the cut pieces 2000 to the conveying mechanism 18 after slitting.

[0276] The third adsorption mechanism 19 is a mechanism that can be used to adsorb the to-be-cut piece 2000. Specifically, the third adsorption mechanism 19 adsorbs the to-be-cut piece 2000 after being cut to the conveying mechanism 18.

[0277] The third adsorption mechanism 19 can use, but is not limited to, vacuum adsorption to adsorb the workpiece 2000 to the conveying mechanism 18. Specifically, the conveying mechanism 18 is provided with a vacuum hole, and the third adsorption mechanism 19 is a vacuum pump, and the third adsorption mechanism 19 is connected to the vacuum hole, so that the workpiece 2000 to be cut can be adsorbed to the conveying mechanism 18 through the vacuum hole. As an example, the conveying mechanism 18 is a belt conveying mechanism, and the vacuum hole can be provided on the conveyor belt of the belt conveying mechanism. As another example, the conveying mechanism 18 includes a rotating roller, and the vacuum hole is provided on the outer peripheral surface of the rotating roller.

[0278] The third adsorption mechanism 19 can adsorb the cut pieces 2000 to the conveying mechanism 18, so that the cut pieces 2000 can move synchronously with the conveying mechanism 18, which makes it easier for the conveying mechanism 18 to receive the cut pieces 2000 and to continue to convey the cut pieces 2000 to a predetermined position.

[0279] In some embodiments, the slitting device 10 further includes a third driving mechanism, and the third driving mechanism is used to drive the moving member 111 to move so that the moving member 111 moves periodically.

[0280] The third driving mechanism refers to a mechanism that can be used to drive the moving member 111 to perform periodic motion.

[0281] When the moving member 111 rotates periodically, the third driving mechanism can be a mechanism that can be used to output rotational drive, such as a motor, a screw mechanism, a mechanism in which a motor and a gear set cooperate, or the like.

[0282] When the moving member 111 moves periodically, the third driving mechanism may be a mechanism such as a screw mechanism, a cylinder, etc. that can be used to output a linear drive.

[0283] In some embodiments, the third driving mechanism is used to drive the moving member 111 to rotate, so that the moving member 111 rotates periodically.

[0284] Please also read Figure 2 and Figure 3 , and in combination with other drawings. The winding device 100 provided in the embodiment of the present application includes a winding mechanism 20 and a slitting device 10, and the winding mechanism 20 is used to wind the slitting workpiece 2000. Among them, the slitting device 10 in this embodiment is the same as the slitting device 10 in the previous embodiment. For details, please refer to the relevant description of the slitting device 10 in the previous embodiment, which will not be repeated here.

[0285] Specifically, during the conveying process of the workpiece 2000, the cutter 112 of the slitting device 10 periodically moves with the moving member 111 to periodically slit the workpiece 2000, so that the slitting device 10 periodically slits the workpiece 2000 of the required length. In addition, the winding mechanism 20 winds up the slit workpiece 2000.

[0286] Specifically, Figure 2 and Figure 3 As shown, the winding mechanism 20 comprises a winding needle 21. The winding needle 21 is used for rotating to wind the workpiece 2000 to be cut after slitting.

[0287] Based on this, the winding method of the winding device 100 provided in the embodiment of the present application is: conveying the piece 2000 to be cut, driving the winding mechanism 20 to wind the piece 2000 to be cut, and driving the moving part 111 of the cutter 112 device to move periodically. In this way, during the process of conveying the piece 2000 to be cut and the winding mechanism 20 winding the piece 2000 to be cut, the moving part 111 of the cutter 112 device can move periodically, so that the cutter 112 moves periodically with the moving part 111 to periodically cut the piece 2000 to be cut. At this time, there is no need to stop the winding of the winding mechanism 20 or reduce the winding speed of the winding mechanism 20.

[0288] The winding device 100 provided in the embodiment of the present application adopts the slitting device 10 involved in the above embodiments, so that the cutter 112 of the slitting device 10 can move periodically with the moving member 111 during the conveying process of the piece to be cut 2000, so as to periodically cut the piece to be cut 2000 without affecting the normal conveying of the piece to be cut 2000, thereby improving the winding efficiency of the piece to be cut 2000. In this way, the winding efficiency of the product (such as the electrode assembly) formed by winding the piece to be cut 2000 can be improved, thereby improving the production efficiency of the electrode assembly.

[0289] In some embodiments, see Figure 2, and in combination with other drawings. The slitting device 10 further includes a conveying mechanism 18, which is used to receive and convey the slitting pieces 2000. Moreover, the conveying speed of the conveying mechanism 18 is the same as the winding speed of the winding mechanism 20.

[0290] By setting the conveying speed of the conveying mechanism 18 to be the same as the winding speed of the winding mechanism 20, the conveying speed of the conveying mechanism 18 can be adapted to the winding speed of the winding mechanism 20. In this way, the linear speed of the workpiece 2000 to be cut after slitting is also the same as the winding speed of the winding mechanism 20, so that the workpiece 2000 to be cut located at the conveying mechanism 18 and the winding mechanism 20 after slitting has a certain tension, which facilitates the winding of the workpiece 2000 by the winding mechanism 20, and can improve the quality of the product (such as the electrode assembly) formed by winding the workpiece 2000 to be cut.

[0291] It should be supplemented that, by adsorbing the cut pieces 2000 to the conveying mechanism 18 through the third adsorption mechanism 19, it is also helpful to make the cut pieces 2000 located at the conveying mechanism 18 and the winding mechanism 20 have a certain tension after cutting, so as to facilitate the winding of the cut pieces 2000 by the winding mechanism 20 and improve the quality of the product (such as the electrode assembly) formed by winding the cut pieces 2000.

[0292] Please also read Figure 1 and Figure 2 , and in combination with other drawings. The battery processing equipment 1000 provided in the embodiment of the present application includes a slitting device 10 or a winding device 100. Among them, the slitting device 10 and the winding device 100 in this embodiment are the same as the slitting device 10 and the winding device 100 in the previous embodiment. For details, please refer to the relevant description of the slitting device 10 and the winding device 100 in the previous embodiment, which will not be repeated here.

[0293] It can be understood that the piece to be cut 2000 can be an electrode sheet or a separator. The winding device 100 is used to wind the cut piece to be cut 2000 to form an electrode assembly.

[0294] The battery processing equipment 1000 provided in the embodiment of the present application adopts the slitting device 10 or the battery processing equipment 1000 involved in the above embodiments, so that the slitting device 10 can periodically slitting the piece to be cut 2000 during the conveying process of the piece to be cut 2000 without affecting the normal conveying of the piece to be cut 2000, thereby improving the winding efficiency of the piece to be cut 2000. In this way, the winding efficiency of the piece to be cut 2000 to form an electrode assembly can be improved, thereby improving the production efficiency of the electrode assembly, and further improving the production efficiency of the battery.

[0295] In some embodiments, see Figure 1 and Figure 2The battery processing equipment 100 further includes an assembly equipment 200 and a stacking equipment 300. The assembly equipment 200 is used to assemble the electrode assemblies to form battery cells, and the stacking equipment 300 is used to stack the battery cells to form a battery.

[0296] With such arrangement, a battery can be processed.

[0297] The battery production line provided in the embodiment of the present application includes a battery processing device 1000. The battery processing device 1000 in this embodiment is the same as the battery processing device 1000 in the previous embodiment. For details, please refer to the relevant description of the battery processing device 1000 in the previous embodiment, which will not be repeated here.

[0298] Among them, the battery processing production line refers to the assembly line used to produce batteries.

[0299] The battery production line provided in the embodiment of the present application can improve the production efficiency of batteries by adopting the battery processing equipment 1000 involved above.

[0300] See also Fig.10 , and combined with other drawings. Among them, Fig.10 Flow chart of the winding method provided in some embodiments of the present application. The winding method provided in the embodiments of the present application adopts a winding device 100. Among them, the winding device 100 in this embodiment is the same as the winding device 100 in the previous embodiment. For details, please refer to the relevant description of the winding device 100 in the previous embodiment, which will not be repeated here.

[0301] The winding method provided in the embodiment of the present application comprises the following steps:

[0302] S10 , conveying the piece 2000 to be cut, driving the winding mechanism 20 to wind the piece 2000 to be cut, and driving the moving member 111 to move periodically, so that the cutter 112 moves periodically with the moving member 111 to periodically cut the piece 2000 to be cut.

[0303] In this step, the piece 2000 to be cut is transported so that the piece 2000 to be cut can move toward the winding mechanism 20, so that the winding mechanism 20 can wind the piece 2000 to be cut. The piece 2000 to be cut can be transported through the base 12 mentioned above; can also be transported through the stopper 14 mentioned above; can also be transported through the base 12 and the stopper 14 mentioned above, or can even be transported through other mechanisms.

[0304] The winding mechanism 20 winds the workpiece 2000 to be cut, and specifically, the winding needle 21 of the winding mechanism 20 clamps the workpiece 2000 to be cut and rotates, thereby winding the workpiece 2000 to be cut.

[0305] During the process of conveying the workpiece 2000 to be cut and the winding mechanism 20 winding the workpiece 2000 to be cut, the moving member 111 moves periodically, so that the cutter 112 moves periodically with the moving member 111, thereby periodically cutting the workpiece 2000 to be cut.

[0306] Such an arrangement enables the cutter 112 to periodically cut the piece 2000 to be cut during the conveying process of the piece 2000 to be cut, without stopping or slowing down the conveying operation and winding operation of the piece 2000 to be cut, thereby improving the winding efficiency of the piece 2000 to be cut, and further improving the production efficiency of the product (such as the electrode assembly) formed by winding the piece 2000 to be cut.

[0307] As one of the embodiments of this application, Figures 2 to 4 As shown, the slitting device 10 includes a cutter mechanism 11, a base 12 and a stopper 14. The cutter mechanism 11 includes a moving part 111 and a cutter 112 arranged on the moving part 111. The moving part 111, the base 12 and the stopper 14 are arranged at intervals, and the moving part 111, the base 12 and the stopper 14 are all arranged to be rotatable. The rotation direction of the moving part 111 is the same as the rotation direction of the stopper 14, the rotation direction of the base 12 is opposite to the rotation direction of the moving part 111, and the rotation direction of the base 12 is opposite to the rotation direction of the stopper 14. The outer peripheral surface of the base 12 is spaced apart from the outer peripheral surface of the moving part 111 to form a first gap 101, and the outer peripheral surface of the base 12 is also spaced apart from the outer peripheral surface of the stopper 14 to form a second gap 102. The base 12 and the stopper 14 are used to cooperate with the roller to feed the piece 2000 to be cut, so that the piece 2000 to be cut can pass through the second gap 102 and the first gap 101 in sequence. The rotation period of the moving part 111 is set to the rolling time of the base 12 and the stopper 14 in rolling the required length of the workpiece 2000 to be cut. Based on this, in the process of the base 12 and the stopper 14 rolling the workpiece 2000 to be cut, the moving part 111 rotates periodically, and the cutter 112 rotates to the first gap 101 periodically with the movement, so as to periodically cut the workpiece 2000 to be cut of the required length at the first gap 101.

[0308] Among them, combined Figure 5 and Figure 6 The slitting device 10 may further include a first driving mechanism 13 for driving the base 12 to rotate, so that the base 12 rolls the piece 2000 to be cut; or, the slitting device 10 may further include a second driving mechanism 15 for driving the limiter 14 to rotate, so that the limiter 14 rolls the piece 2000 to be cut; or, the slitting device 10 may further include a first driving mechanism 13 and a second driving mechanism 15, the first driving mechanism 13 is used to drive the base 12 to rotate, and the second driving mechanism 15 is used to drive the limiter 14 to rotate, so that both the base 12 and the limiter 14 roll the piece 2000 to be cut. In the above, the base 12 and the limiter 14 cooperate to roll the piece 2000 to be cut.

[0309] Combination Figure 8 The slitting device 10 may further include a second adsorption mechanism 17, which is disposed in the base 12 to divide the base 12 into an adsorption portion 121 and a non-adsorption portion 122. The second adsorption mechanism 17 is used to adsorb the uncut pieces 2000 to be cut to the adsorption portion 121, and the second adsorption mechanism 17 can rotate with the base 12, so that the uncut part of the pieces 2000 to be cut can pass through the second gap 102 and the first gap 101 in sequence in a state of being adsorbed to the adsorption portion 121. In this way, the cutter 112 can periodically rotate to the first gap 101 to periodically cut the pieces 2000 to be cut at the first gap 101. Then, the second adsorption mechanism 17 can rotate relative to the base 12 to adjust the positions of the adsorption part 121 and the non-adsorption part 122, so that the non-adsorption part 122 can be opposite to the cut piece 2000, that is, the second adsorption mechanism 17 is away from the cut piece 2000 and does not adsorb the cut piece 2000, so as to facilitate the cut piece 2000 to be cut to be separated from the base 12.

[0310] The slitting device 10 may further include a conveying mechanism 18 , which is used to receive the slitting pieces 2000 to be cut and convey the slitting pieces 2000 to the winding mechanism 20 .

[0311] The winding device 100 may include a winding mechanism 20 and a slitting device 10 , wherein the winding mechanism 20 is used for winding the slit pieces 2000 to be cut.

[0312] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A slitting device for slitting pieces to be cut; characterized in that: The slitting device comprises: The cutter mechanism comprises a moving part and a cutter arranged on the moving part, wherein the cutter is used for periodically moving with the moving part to periodically cut the parts to be cut.

2. The slitting device according to claim 1, characterized in that: The moving part is configured to be rotatable.

3. The slitting device according to claim 2, characterized in that: The cutting cycle of the cutter is the rotation cycle of the moving part.

4. The slitting device according to claim 2 or 3, characterized in that: At least a portion of the cutter is disposed on the outer peripheral surface of the moving part.

5. The slitting device according to any one of claims 1 to 4, characterized in that: The slitting device further comprises a base, wherein the base is provided with a first surface, a first gap is formed between the first surface and the moving part for the passage of the piece to be cut, and the cutter is used to cooperate with the first surface to slitting the piece to be cut.

6. The slitting device according to claim 5, characterized in that: The first surface is provided with a knife groove, and the cutting knife is used to be plugged into and matched with the knife groove to cut the piece to be cut.

7. The slitting device according to claim 5 or 6, characterized in that: The base is configured to be movable and is used to move with the workpiece to be cut or to transport the workpiece to be cut through the first surface.

8. The slitting device according to claim 7, characterized in that: The moving part and the base are both arranged to be rotatable, the rotation direction of the base is opposite to the rotation direction of the moving part, and the first surface is the outer peripheral surface of the base.

9. The slitting device according to claim 8, characterized in that: The rotation period of the base is the same as the rotation period of the moving part.

10. The slitting device according to any one of claims 7 to 9, characterized in that: The slitting device further comprises a first driving mechanism, an output end of which is connected to the base and is used to drive the base to transport the pieces to be cut.

11. The slitting device according to any one of claims 5 to 10, characterized in that: The slitting device also includes a limiting member spaced apart from the moving member, the limiting member is provided with a second surface, the first surface and the second surface are spaced apart to form a second gap connected to the first gap, and the second gap and the first gap are used to sequentially pass the pieces to be cut.

12. The slitting device according to claim 11, characterized in that: The first surface and the second surface are used to cooperate in conveying the piece to be cut.

13. The slitting device according to claim 11 or 12, characterized in that: The limiting member is configured to be movable and is used to move with the workpiece to be cut or to transport the workpiece to be cut through the second surface.

14. The slitting device according to claim 13, characterized in that: The moving part and the limiting part are both arranged to be rotatable, the rotation direction of the limiting part is the same as the rotation direction of the moving part, and the second surface is the outer peripheral surface of the limiting part.

15. The slitting device according to claim 13 or 14, characterized in that: The slitting device further comprises a second driving mechanism, the output end of which is connected to the limiting member and is used to drive the limiting member to convey the piece to be cut.

16. The slitting device according to any one of claims 11 to 15, characterized in that: The slitting device further comprises a first adsorption mechanism, which is arranged on the limiting member and is used for adsorbing the piece to be cut onto the second surface.

17. The slitting device according to claim 16, characterized in that: The first adsorption mechanism is used to adsorb the workpiece to be cut onto the second surface so that the limiting member moves with the workpiece to be cut or transports the workpiece to be cut; the first adsorption mechanism is also used to remove the adsorption of the workpiece to be cut so that the workpiece to be cut is separated from the second surface and transported to the first gap.

18. The slitting device according to any one of claims 5 to 17, characterized in that: The slitting device further comprises a second adsorption mechanism, which is arranged on the base and is used for adsorbing the piece to be cut onto the first surface.

19. The slitting device according to claim 18, characterized in that: The second adsorption mechanism is used to adsorb the workpiece to be cut to the first surface so that the base moves with the workpiece to be cut or transports the workpiece to be cut; the second adsorption mechanism is also used to remove the adsorption of the workpiece to be cut so that the workpiece to be cut after cutting can be separated from the base.

20. The slitting device according to claim 19, characterized in that: The second adsorption mechanism is movably connected to the base and is used to move with the base to adsorb the uncut pieces to be cut; and is also used to move relative to the base to remove the adsorption of the cut pieces to be cut.

21. The slitting device according to claim 20, characterized in that: The base is configured to be rotatable; at least a portion of the second adsorption mechanism is disposed in the base to divide the base into an adsorption portion and a non-adsorption portion, and is configured to rotate with the base; at least a portion of the second adsorption mechanism is also configured to rotate relative to the base to adjust the positions of the adsorption portion and the non-adsorption portion, so that the adsorption portion is opposite to at least a portion of the workpiece to be cut that has not been cut, and the non-adsorption portion is opposite to at least a portion of the workpiece to be cut after cutting.

22. The slitting device according to any one of claims 18 to 21, characterized in that: The first surface is provided with adsorption holes, the second adsorption mechanism is connected to the adsorption holes, and adsorbs the to-be-cut piece onto the first surface through the adsorption holes.

23. The slitting device according to claim 22, characterized in that: The first surface is provided with an adsorption area and an avoidance area, the adsorption holes are provided in the adsorption area, one side or two opposite sides of the adsorption area are provided with the avoidance area, and the avoidance area is used to avoid part of the workpiece to be cut.

24. The slitting device according to any one of claims 1 to 23, characterized in that: The slitting device further comprises a conveying mechanism, and the conveying mechanism is used for receiving and conveying the pieces to be cut after slitting.

25. The slitting device according to claim 24, characterized in that: The slitting device further comprises a third adsorption mechanism, which is connected to the conveying mechanism and is used to adsorb the slitting pieces to be cut to the conveying mechanism.

26. A winding device, characterized in that: It comprises a winding mechanism and a slitting device according to any one of claims 1 to 25, wherein the winding mechanism is used for winding the pieces to be cut after slitting.

27. The winding device according to claim 26, characterized in that The slitting device further comprises a conveying mechanism, which is used for receiving and conveying the pieces to be cut after slitting, and the conveying speed of the conveying mechanism is the same as the winding speed of the winding mechanism.

28. A battery processing device, characterized in that: It comprises a slitting device according to any one of claims 1 to 25; or, it comprises a winding device according to claim 26 or 27.

29. The battery processing equipment according to claim 28, characterized in that: The battery processing equipment also includes: Assembly equipment for assembling electrode assemblies to form battery cells; A stacking device is used to stack the battery cells to form a battery.

30. A battery production line, characterized in that: Comprising a battery processing apparatus according to claim 28.

31. A winding method, using the winding device according to claim 26 or 27, characterized in that: The winding method comprises: The piece to be cut is conveyed, the winding mechanism is driven to wind the piece to be cut, and the moving member is driven to move periodically, so that the cutter moves periodically with the moving member to cut the piece to be cut periodically.

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