Winding apparatus and electrode sheet rolling device

Abstract

A winding apparatus (100), comprising a reel assembly (10) and a cutting assembly (20). The reel assembly (10) is provided with a reel (11); the reel (11) is configured to rotate and wind an electrode strip; the axis of the reel (11) is arranged in a first direction; the cutting assembly (20) is arranged upstream of the reel assembly (10); the cutting assembly (20) is configured to cut off the electrode strip; the cutting assembly (20) comprises a moving mechanism (21) and a cutting blade (22) arranged on the moving mechanism; and the moving mechanism (21) drives the cutting blade (22) to the end, in the first direction, of an electrode strip to be cut off and to slide in the first direction for cutting. In the winding apparatus, an electrode strip is cut off by dicing, so as to form a flat, serration‑free cut end, such that pressing on a subsequent layer of the electrode strip when the cut end is wound onto an empty reel can be reduced, the surface quality of the electrode strip is improved, and waste is reduced, thereby improving the production efficiency of electrode strip winding. Also provided is an electrode sheet rolling device.

Description

Winding device and electrode rolling equipment Cross-reference to related applications

[0001] This application claims priority to Chinese Patent Application No. 202510051595.1, filed on January 13, 2025, entitled “Winding Device and Electrode Rolling Equipment”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of batteries, and in particular to a winding device and an electrode rolling equipment. Background Technology

[0003] With the development of new energy technologies, batteries are being used more and more widely, such as in mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, and power tools.

[0004] In battery production, electrode winding is an important step, but the production yield in this step is not ideal. Summary of the Invention

[0005] This application provides a winding device and an electrode rolling device, which can improve the quality of electrode strips and reduce waste.

[0006] In a first aspect, a winding device is provided according to an embodiment of this application. The winding device includes a roll assembly and a cutting assembly. The roll assembly has a roll configured to rotatably wind an electrode strip, and the axis of the roll is arranged along a first direction. The cutting assembly is disposed upstream of the roll assembly and is configured to cut the electrode strip. The cutting assembly includes a moving mechanism and a cutting blade disposed on the moving mechanism. The moving mechanism drives the cutting blade to one end of the electrode strip to be cut in the first direction and slides along the first direction to perform cutting.

[0007] According to one aspect of the embodiments of this application, the moving mechanism includes a first moving mechanism and a second moving mechanism; the first moving mechanism is configured to drive the cutting blade to translate along a second direction to approach or move away from the electrode strip to be cut; the second moving mechanism is disposed on the first moving mechanism, the cutting blade is disposed on the second moving mechanism, and the second moving mechanism is configured to drive the cutting blade to cut the electrode strip to be cut along the first direction; the first direction intersects the second direction.

[0008] According to one aspect of the embodiments of this application, the first moving mechanism includes a first frame and a first driving element; the first frame includes a mounting portion, a guide portion and a limiting portion, the guide portion is connected to the mounting portion and the limiting portion respectively, the guide portion slides with the second moving mechanism in a second direction, and the limiting portion is configured to limit the second moving mechanism in the second direction; the first driving element is connected between the mounting portion and the second moving mechanism and is configured to drive the second moving mechanism to slide in the second direction.

[0009] According to one aspect of the present application, the limiting part is provided with an adjusting member, the adjusting member including an adjusting rod and a locking member; the adjusting rod is threadedly connected to the limiting part, and the axis of the adjusting rod is arranged parallel to the second direction; the locking member is threadedly connected to the adjusting rod and abuts against the limiting part.

[0010] According to one aspect of an embodiment of this application, the second moving mechanism includes a second frame, a second driving element, a driving wheel, a driven wheel, a flexible member, a tool holder, and a guide member; the second frame is slidably engaged with the first moving mechanism; the second driving element is disposed on the second frame and configured to provide rotational power; the driving wheel is rotatably disposed on the second frame and connected to the second driving element; the driven wheel is rotatably disposed on the second frame; the flexible member is disposed on the driving wheel and the driven wheel, and is in a transmission engagement with the driving wheel and the driven wheel; the tool holder is disposed on the flexible member, and the cutting edge is disposed on the tool holder; the guide member is disposed on the second frame and is slidably engaged with the tool holder, and the guide member is configured to provide guidance for the tool holder in the first direction.

[0011] According to one aspect of the embodiments of this application, the driving wheel and the driven wheel are both synchronous belt pulleys, the flexible member is a synchronous belt, the flexible member meshes with the driving wheel and the driven wheel for transmission, and the guide member is a linear guide rail.

[0012] According to one aspect of an embodiment of this application, the second moving mechanism further includes a positioning member, which includes a first positioning element, a second positioning element, a third positioning element, and a positioning reference member; the first positioning element is disposed on the second frame and configured to position the initial position of the cutting blade; the second positioning element is disposed on the second frame and configured to position the cutting start end of the cutting blade; the third positioning element is disposed on the second frame and configured to position the cutting end end of the cutting blade; the positioning reference member is disposed on the blade holder and configured to provide a positioning reference for the first positioning element, the second positioning element, and the third positioning element.

[0013] According to one aspect of the embodiments of this application, the winding device further includes an adsorption assembly, which includes an adsorption chamber, a pressure gauge, and a solenoid valve; the adsorption chamber is disposed on the moving mechanism, the adsorption chamber is provided with an adsorption surface, the adsorption surface is provided with adsorption holes, and the adsorption holes are configured to adsorb the electrode strip under negative pressure in the first direction; the pressure gauge is connected to the adsorption chamber and is configured to detect the air pressure in the adsorption chamber; the solenoid valve is connected to the adsorption chamber and is configured to control the air pressure in the adsorption chamber.

[0014] According to one aspect of the present application, the adsorption assembly further includes a baffle, the baffle including a connecting portion and a guiding portion; the connecting portion is configured to be adjustablely disposed on the moving mechanism; the guiding portion is connected to the connecting portion, the guiding portion having a guiding surface, the guiding surface being configured to guide the electrode strip to smoothly transition to the adsorption surface.

[0015] According to one aspect of the embodiments of this application, the roll includes a first roll and a second roll, the first roll and the second roll being spaced apart in a third direction; the cutting component is located between the first roll and the second roll; the third direction intersects with the first direction.

[0016] According to one aspect of the embodiments of this application, the adsorption chamber includes a first adsorption chamber and a second adsorption chamber, wherein the first adsorption chamber and the second adsorption chamber are respectively disposed on both sides of the cutting edge in the third direction.

[0017] According to one aspect of the embodiments of this application, the winding device further includes a pressure roller assembly, the pressure roller assembly including a roller frame, an auxiliary roller, and a third drive element; the roller frame is disposed on the moving mechanism, and the roller frame is located between the second drum and the adsorption chamber in the third direction; the auxiliary roller is disposed on the roller frame, and the axis of the auxiliary roller is parallel to the first direction; the third drive element is disposed on the roller frame and connected to the auxiliary roller, and the third drive element is configured to drive the auxiliary roller to rotate forward and reverse.

[0018] According to one aspect of the embodiments of this application, the winding device further includes a translation component, the cutting component is disposed on the translation component, and the translation component is configured to drive the cutting component to translate in the third direction.

[0019] Secondly, according to embodiments of this application, an electrode rolling device is provided, which includes the winding device described in the first aspect.

[0020] The winding device in this embodiment includes a roll assembly and a cutting assembly. The roll assembly has a roll, and the cutting assembly includes a moving mechanism and a cutting blade. The moving mechanism can drive the cutting blade to slide along a first direction to cut the electrode strip. The electrode strip is cut by a slicing method, resulting in a smooth, serrated cut. This reduces the pressure on the next turn of the electrode strip after the cut enters the empty roll, improves the surface quality of the electrode strip, reduces waste, and thus improves the production yield of the electrode strip winding. Attached Figure Description

[0021] The features, advantages, and technical effects of exemplary embodiments of this application will now be described with reference to the accompanying drawings.

[0022] Figure 1 is a schematic diagram of the cutting component and the adsorption component of some embodiments of this application from one view;

[0023] Figure 2 is a partially enlarged schematic diagram of Figure 1 at point I in this application;

[0024] Figure 3 is a partially enlarged schematic diagram of Figure 1 at point II in this application;

[0025] Figure 4 is a schematic diagram of the cutting assembly and pressure roller assembly of some embodiments of this application from one view;

[0026] Figure 5 is a partially enlarged schematic diagram of Figure 4 at point III in this application;

[0027] Figure 6 is a schematic diagram of a winding device according to some embodiments of this application;

[0028] Figure 7 is a schematic diagram of a winding device according to some embodiments of this application;

[0029] Figure 8 is a schematic diagram of a winding device according to some embodiments of this application;

[0030] Figure 9 is a schematic diagram of a winding device according to some embodiments of this application.

[0031] The accompanying drawings are not necessarily drawn to scale.

[0032] Marker explanation:

[0033] 100 - Rewinding device;

[0034] 10-Roll assembly; 11-Roll; 111-First roll; 112-Second roll;

[0035] 20-Cutting assembly; 21-Moving mechanism; 211-First moving mechanism; 2111-First frame; 21111-Mounting part; 21112-Guide part; 21113-Limiting part; 21114-Adjusting component; 2112-First driving element; 212-Second moving mechanism; 2121-Second frame; 2122-Second driving element; 2123-Driven wheel; 2124-Driving wheel; 2125-Flexible component; 2126-Cut holder; 2127-Guide component; 2128-Positioning component; 21281-First positioning element; 21282-Second positioning element; 21283-Third positioning element; 21284-Positioning reference component; 22-Cutting blade;

[0036] 30 - Adsorption assembly; 31 - Adsorption chamber; 311 - First adsorption chamber; 312 - Second adsorption chamber; 32 - Pressure gauge; 33 - Solenoid valve; 34 - Baffle; 341 - Connecting part; 342 - Guiding part;

[0037] 40 - Pressure roller assembly; 41 - Roller frame; 42 - Auxiliary roller; 43 - Third drive element;

[0038] 50-Translational assembly;

[0039] 60 - Automatic roll changing mechanism;

[0040] X - First direction; Y - Second direction; Z - Third direction. Detailed Implementation

[0041] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of this application by way of example, but should not be used to limit the scope of this application, that is, this application is not limited to the described embodiments.

[0042] In the description of this application, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationships, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. "Vertical" is not vertical in the strict sense, but within the allowable tolerance range. "Parallel" is not parallel in the strict sense, but within the allowable tolerance range.

[0043] References to "embodiments" in this application mean that specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of this application. The phrase appearing in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0044] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "mounted", "connected", and "connected to" 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 directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] Currently, from the perspective of the development of the market situation, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely used in electric transportation such as electric bicycles, electric motorcycles, and electric vehicles, as well as in multiple fields such as military equipment and aerospace. With the continuous expansion of the application fields of power batteries, the market demand is also continuously increasing.

[0046] With the increasingly wide application of batteries, enterprises have higher and higher requirements for the performance and quality of power batteries, and at the same time strive to reduce production costs. Rolling can significantly improve the energy density of the electrode sheet and has high production efficiency, which is an indispensable process in the production process of the electrode sheet. The electrode sheet tape is automatically wound after rolling and pre-cutting. How to cut the electrode sheet tape during winding, improve the cutting quality, and reduce waste has become a problem to be solved.

[0047] In the related art, a serrated cutter is used to cut the electrode sheet tape. When cutting the electrode sheet tape, the serrated cutter impacts the electrode sheet tape. Its operation process is to squeeze and pierce the surface of the electrode sheet tape until the electrode sheet tape is cut, leaving a serrated fracture. These serrated fractures will be taken into the bottom of the material roll along with the empty reel. During the process of the reel winding the electrode sheet tape, the serrated fractures have sharp teeth, which will leave bumps on the surface of the next turn of the electrode sheet tape or even pierce the electrode sheet tape under the influence of tension, resulting in abnormal waste of the electrode sheet tape quality and increased production costs.

[0048] To improve the production yield of electrode strip winding, the fracture morphology of the electrode strip can be improved. Specifically, the sharp structure at the fracture point can be reduced, the serrated fracture can be changed to a flat fracture, and the sharp teeth can be removed, thereby improving the quality of the electrode strip. Based on the above considerations, this application provides a winding device 100, which includes a roll assembly 10 and a cutting assembly 20. The roll assembly 10 is provided with a roll, which is configured to rotatably wind the electrode strip, and the axis of the roll is arranged along a first direction X. The cutting assembly 20 is disposed upstream of the roll assembly 10 and is configured to cut along the first direction X on the surface of the electrode strip, thereby cutting the electrode strip. When the cutting component 20 cuts the electrode strip, it cuts along the first direction X (that is, the width direction of the electrode strip) from one end of the electrode strip to the other end. The cut surface formed after the electrode strip is cut is flat and without serrations, which can reduce the compression of the cut surface on the next turn of the electrode strip, improve the quality of the electrode strip, reduce waste, and thus improve the production yield of the electrode strip winding.

[0049] The winding device 100 provided in this application embodiment is applicable to the winding of electrode strips at various stages of the production process. For the sake of brevity, the following embodiment uses an electrode rolling mill as an example.

[0050] The electrode rolling equipment includes a machine body, an unwinding assembly, a pressing assembly, and a winding device 100. The unwinding assembly, pressing assembly, and winding device 100 are all mounted on the machine body, which is equipped with an electrical control system connected to each assembly and device during production. The unwinding assembly provides the electrode strip to be pressed, the pressing assembly has multiple pressure rollers, and the winding device 100 includes a roll assembly 10 and a cutting assembly 20. During production, the unwinding assembly releases the electrode strip to be pressed, which is then rolled by the multiple pressure rollers to increase its energy density. After rolling, the electrode strip enters the winding device 100 for winding. The cutting assembly 20 is located upstream of the roll assembly 10 along the electrode strip's transport direction. The electrode strip is wound onto the drum 11 at the winding device 100. As the drum 11 rotates, the amount of electrode strip wound on the drum 11 gradually increases, and the overall diameter gradually increases. After the electrode strip reaches the predetermined winding amount, the cutting component 20 cuts the electrode strip along the width direction of the electrode strip to form a flat cut.

[0051] Please refer to Figures 1 to 6. Figure 1 is a schematic diagram of the cutting component and the adsorption component of some embodiments of this application from one perspective; Figure 2 is a partially enlarged schematic diagram of Figure 1 at point I of this application; Figure 3 is a partially enlarged schematic diagram of Figure 1 at point II of this application; Figure 4 is a schematic diagram of the cutting component and the pressure roller component of some embodiments of this application from one perspective; Figure 5 is a partially enlarged schematic diagram of Figure 4 at point III of this application; Figure 6 is a schematic diagram of the winding device of some embodiments of this application.

[0052] According to some embodiments of this application, this application provides a winding device 100, which includes a roll assembly 10 and a cutting assembly 20; the roll assembly 10 is provided with a roll 11, which is configured to rotatably wind an electrode strip, and the axis of the roll 11 is arranged along a first direction X; the cutting assembly 20 is disposed upstream of the roll assembly 10, and the cutting assembly 20 is configured to cut the electrode strip, the cutting assembly 20 includes a moving mechanism 21 and a cutting blade 22 disposed on the moving mechanism 21, the moving mechanism 21 drives the cutting blade 22 to one end of the electrode strip to be cut in the first direction X and slides along the first direction X on the surface of the electrode strip to perform cutting.

[0053] The drum assembly 10 is a component of the winding device 100 that winds up the electrode strip. The drum assembly 10 can have one or more drums 11. When there are multiple drums 11, they are spaced apart and can simultaneously or sequentially receive the electrode strip and wind it onto themselves. The drum 11 rotates while winding the electrode strip. This rotation can be achieved by a servo motor (driving a reducer or directly) driving the drum 11.

[0054] Along the winding direction of the electrode sheet, the cutting assembly 20 is located upstream of the roll assembly 10. After the electrode sheet wound on the roll 11 reaches a predetermined amount, the electrode sheet is cut. When performing the cutting action of the electrode sheet, the moving mechanism 21 first drives the cutting blade 22 to approach the electrode sheet to be cut, and then drives the cutting blade 22 to move along the first direction X from one end of the electrode sheet to the other end, thereby realizing the cutting of the electrode sheet.

[0055] There are multiple ways to implement the movement mechanism 21 driving the cutting blade 22 closer to the electrode strip.

[0056] For example, as one implementation of the moving mechanism 21, the moving mechanism 21 first drives the cutting blade 22 along a curve to approach the electrode strip to be cut, and then drives the cutting blade 22 along the first direction X to cut the electrode strip to be cut. The moving mechanism 21 may include a curved motion mechanism and a linear motion mechanism. The curved motion mechanism includes a swing arm and a servo motor. The servo motor is connected to one end of the swing arm, and the linear motion mechanism is connected to the other end of the swing arm. When the servo motor rotates, it drives the swing arm to swing, and the linear motion mechanism located at the other end of the swing arm can approach the electrode strip to be cut along the curve. The curved motion mechanism may also include a swing arm and a cylinder (or hydraulic cylinder). One end of the swing arm is rotatably connected to the main body of the winding device 100 (e.g., hinged connection), and the other end of the swing arm is connected to the linear motion mechanism. The two ends of the swing arm are hinged to the drive rod of the cylinder, and the cylinder body is hinged to the main body of the winding device 100. When the drive rod of the cylinder extends or retracts, it can drive the swing arm to swing, thereby allowing the linear motion mechanism to approach the electrode strip to be cut along the curve. The linear motion mechanism may include a power element connected to the cutting blade 22, which drives the cutting blade 22 to translate in the first direction X. The power element may be a cylinder, a hydraulic cylinder, a linear motor, etc.

[0057] For example, as another implementation of the moving mechanism 21, the moving mechanism 21 first drives the cutting blade 22 to rotate to one end of the electrode strip to be cut in the first direction X, and then drives the cutting blade 22 to cut the electrode strip along the first direction X. The moving mechanism 21 may include a rotary motion mechanism and a linear motion mechanism. The rotary motion mechanism is mounted on the linear motion mechanism. The rotary motion mechanism may include a servo motor and a base. The base is mounted on the linear motion mechanism, the servo motor is mounted on the base, and the cutting blade 22 is mounted on the servo motor. The linear motion mechanism may include a power element, such as a cylinder, a hydraulic cylinder, or a linear motor. When cutting the electrode strip, the servo motor drives the cutting blade 22 to rotate to one end of the electrode strip to be cut in the first direction X. When projected along the first direction X, the projection of the electrode strip intersects with the projection of the cutting blade 22. The power element drives the cutting blade 22 to translate along the first direction X, thereby cutting the electrode strip to be cut.

[0058] For example, as another implementation of the moving mechanism 21, the moving mechanism 21 first drives the cutting blade 22 to approach the electrode strip to be cut along a straight line, and then drives the cutting blade 22 to cut the electrode strip to be cut along the first direction X. The moving mechanism 21 may include two linear motion mechanisms, one of which drives the cutting blade 22 to approach the electrode strip to be cut, and the other linear motion mechanism drives the cutting blade 22 to cut the electrode strip to be cut along the first direction X.

[0059] The cutting blade 22 is a component of the cutting assembly 20 that directly cuts the electrode strip. The cutting blade 22 is provided with a cutting end, which can be set perpendicular to the first direction X, or it can form an acute angle with the first direction X.

[0060] In the technical solution of this application embodiment, the winding device 100 includes a roll assembly 10 and a cutting assembly 20. The roll assembly 10 is provided with a roll 11, and the cutting assembly 20 includes a moving mechanism 21 and a cutting blade 22. After the electrode strip wound on the roll 11 reaches a predetermined amount, the moving mechanism 21 drives the cutting blade 22 to approach the electrode strip to be cut. The cutting blade 22 reaches one end of the electrode strip to be cut in the first direction X (the width direction of the electrode strip). Then, the moving mechanism 21 drives the cutting blade 22 to slide along the first direction X to cut the electrode strip, thereby cutting the electrode strip and forming a flat cut. When cutting the electrode strip, the cutting assembly 20 drives the cutting blade 22 to cut along one end of the width direction of the electrode strip to the other end. The electrode strip is cut by a slicing method, and the resulting cut is flat and without serrations. This can reduce the compression of the next turn of electrode strip after the cut end enters the empty roll 11, improve the surface quality of the electrode strip, reduce waste, and thus improve the production yield of electrode strip winding.

[0061] According to some embodiments of this application, optionally, the moving mechanism 21 includes a first moving mechanism 211 and a second moving mechanism 212; the first moving mechanism 211 is configured to drive the cutting blade 22 to translate along the second direction Y to approach or move away from the electrode strip to be cut; the second moving mechanism 212 is disposed on the first moving mechanism 211, the cutting blade 22 is disposed on the second moving mechanism 212, and the second moving mechanism 212 is configured to drive the cutting blade 22 to cut the electrode strip to be cut along the first direction X; the first direction X intersects the second direction Y.

[0062] Both the first moving mechanism 211 and the second moving mechanism 212 are mechanisms capable of linear motion. The first moving mechanism 211 drives the second moving mechanism 212 and the cutting blade 22 to move along the second direction Y. The second moving mechanism 212 drives the cutting blade 22 to move along the first direction X. The first direction X intersects the second direction Y, meaning that the first direction X and the second direction Y are not parallel. For example, the first direction X and the second direction Y form an angle, which can be an acute angle, a right angle, or an obtuse angle.

[0063] For example, when the first moving mechanism 211 or the second moving mechanism 212 achieves linear motion, the cutting blade 22 can be moved directly by a power element, which can be a cylinder, a hydraulic cylinder, or a linear motor; or the power element can drive a transmission mechanism, which in turn drives the cutting blade 22 to translate. The power element can be a servo motor, and the transmission mechanism can be a gear and rack transmission mechanism, a lead screw transmission mechanism, a sprocket and chain transmission mechanism, a pulley and belt transmission mechanism, etc.

[0064] In the technical solution of this application embodiment, the first moving mechanism 211 drives the cutting blade 22 to translate along the second direction Y, and the second moving mechanism 212 drives the cutting blade 22 to translate along the first direction X. The two movement trajectories of the cutting blade 22 are both straight lines, which makes it easier to control the movement trajectory, improves the movement accuracy, and thus improves the cutting quality.

[0065] As shown in Figures 1 to 3, according to some embodiments of this application, optionally, the first moving mechanism 211 includes a first frame 2111 and a first driving element 2112; the first frame 2111 includes a mounting portion 21111, a guide portion 21112 and a limiting portion 21113, the guide portion 21112 is connected to the mounting portion 21111 and the limiting portion 21113 respectively, the guide portion 21112 slides with the second moving mechanism 212 in the second direction Y, and the limiting portion 21113 is configured to limit the second moving mechanism 212 in the second direction Y; the first driving element 2112 is connected between the mounting portion 21111 and the second moving mechanism 212, and is configured to drive the second moving mechanism 212 to slide in the second direction Y.

[0066] The mounting portion 21111 of the first frame 2111 provides a mounting position for the guide portion 21112 and the first drive element 2112. The mounting portion 21111, the guide portion 21112 and the limiting portion 21113 can be integrally formed or assembled from separate parts.

[0067] The guide portion 21112 of the first frame 2111 slides with the second moving mechanism 212 to provide guidance for the translation of the second moving mechanism 212. For example, a guide rail is mounted on the guide portion 21112, and a slider is mounted on the second moving mechanism 212. The guide rail and the slider slide with each other, thereby providing sliding guidance for the second moving mechanism 212.

[0068] The limiting part 21113 of the first frame 2111 is provided on the guide part 21112. The limiting part 21113 is located at the end of the guide part 21112 in the second direction Y, and can be one end or both ends. When the second moving mechanism 212 slides along the second direction Y, the limiting part 21113 can abut against the second moving mechanism 212, thereby providing a limit for the second moving mechanism 212 and limiting the stroke of the second moving mechanism 212 in the second direction Y.

[0069] The first drive element 2112 is mounted on the mounting portion 21111 and connected to the second moving mechanism 212 to provide driving force for the sliding of the second moving mechanism 212 in the second direction Y. For example, the first drive element 2112 can be a cylinder, a hydraulic cylinder, a linear motor, etc.

[0070] In the technical solution of this application embodiment, the first moving mechanism 211 includes a first frame 2111 and a first driving element 2112. The first frame 2111 includes a mounting part 21111, a guide part 21112, and a limiting part 21113. The guide part 21112 can provide sliding guidance for the second moving mechanism 212 in the second direction Y, thereby improving the movement accuracy of the cutting blade 22 in the second direction Y. The limiting part 21113 can provide a limit for the second moving mechanism 212 in the second direction Y, thereby limiting the stroke of the cutting blade 22 in the second direction Y, improving the controllability of the cutting blade 22, and making the translation of the cutting blade 22 more reliable.

[0071] As shown in Figures 1 to 3, according to some embodiments of this application, optionally, the limiting part 21113 is provided with an adjusting member 21114, the adjusting member 21114 including an adjusting rod and a locking member; the adjusting rod is threadedly connected to the limiting part 21113, and the axis of the adjusting rod is arranged parallel to the second direction Y; the locking member is threadedly connected to the adjusting rod and abuts against the limiting part 21113.

[0072] The adjusting rod is used to limit the stroke of the second moving mechanism 212. The second moving mechanism 212 reaches its maximum stroke when it comes into contact with the adjusting rod. The adjusting rod has threads on its outer circumferential surface and is installed on the limiting part 21113 via a threaded connection. The axis of the adjusting rod is parallel to the second direction Y. By adjusting the threaded connection between the adjusting rod and the limiting part 21113, the limiting amount of the adjusting rod in the second direction Y can be adjusted. For example, the adjusting rod can be a bolt, a stud, or a rod with external threads machined on its outer circumferential surface.

[0073] The locking element is connected to the adjusting rod via a threaded connection. When the locking element abuts against the limiting part 21113, the adjusting rod can be tightened using the double-nut anti-loosening principle. For example, the locking element can be a nut.

[0074] The limiting part 21113 is provided with a threaded hole for installing the adjusting rod. During assembly, the adjusting rod is screwed into the threaded hole, and the length of the adjusting rod screwed into the threaded hole is controlled by a predetermined limiting amount. After the adjusting rod is assembled, the locking part is threadedly connected to the adjusting rod and simultaneously abuts against the limiting part 21113 to fix the adjusting rod.

[0075] In the technical solution of this application embodiment, the limiting part 21113 can adjust the limit of the second moving mechanism 212 by setting the adjusting member 21114, thereby adjusting the stroke of the second moving mechanism 212 and flexibly adapting to various working conditions. The adjusting rod is threadedly connected to the limiting part 21113, and the fastener is threadedly connected to the adjusting rod and simultaneously abuts against the limiting part 21113, which can tighten the adjusting rod, reduce the loosening of the adjusting rod, and thus improve the reliability of the limit.

[0076] As shown in Figures 1 to 3, according to some embodiments of this application, optionally, the second moving mechanism 212 includes a second frame 2121, a second driving element 2122, a driving wheel 2124, a driven wheel 2123, a flexible element 2125, a tool holder 2126, and a guide element 2127; the second frame 2121 is slidably engaged with the first moving mechanism 211; the second driving element 2122 is disposed on the second frame 2121 and configured to provide rotational power; the driving wheel 2124 is rotatably disposed on the second frame 2121 and is connected to the first moving mechanism 2121. Two drive elements 2122 are connected; the driven wheel 2123 is rotatably mounted on the second frame 2121; the flexible member 2125 is mounted on the drive wheel 2124 and the driven wheel 2123, and is in transmission cooperation with the drive wheel 2124 and the driven wheel 2123; the tool holder 2126 is mounted on the flexible member 2125, and the cutting blade 22 is mounted on the tool holder 2126; the guide member 2127 is mounted on the second frame 2121 and is in sliding cooperation with the tool holder 2126, and the guide member 2127 is configured to provide guidance for the tool holder 2126 in the first direction X.

[0077] The length of the second frame 2121 is along the first direction X. The second frame 2121 is used to provide mounting positions for the second drive element 2122, the drive wheel 2124, the driven wheel 2123, and the guide 2127.

[0078] The second drive element 2122 is mounted on the second frame 2121 and is used to drive the drive wheel 2124 to rotate. For example, the second drive element 2122 is a servo motor and is connected to the shaft of the drive wheel 2124 through a coupling to drive the drive wheel 2124 to rotate.

[0079] The driving wheel 2124 and the driven wheel 2123 are rotatably mounted on the second frame 2121, and both the driving wheel 2124 and the driven wheel 2123 are connected to the second frame 2121 via bearings. Along the first direction X, the driving wheel 2124 is positioned near one end of the second frame 2121, and the driven wheel 2123 is positioned near the other end of the second frame 2121. The plane containing the axes of the driving wheel 2124 and the driven wheel 2123 is parallel to the first direction X.

[0080] The flexible element 2125 is sleeved on the driving wheel 2124 and the driven wheel 2123. When the driving wheel 2124 rotates, the flexible element 2125 can drive the driven wheel 2123 to rotate. For example, the flexible element 2125 can be a belt or a chain. Correspondingly, the driving wheel 2124 and the driven wheel 2123 can both be pulleys or both be sprockets.

[0081] The tool holder 2126 is mounted on the flexible member 2125 to provide a mounting position for the cutting edge 22. The tool holder 2126 is located between the driving wheel 2124 and the driven wheel 2123 in the first direction X. When the flexible member 2125 is in motion, the tool holder 2126 can translate in the first direction X.

[0082] The guide member 2127 is mounted on the second frame 2121, and the length direction of the guide member 2127 is parallel to the first direction X. The guide member 2127 is slidably engaged with the tool holder 2126, and can provide sliding guidance for the tool holder 2126 in the first direction X. The tool holder 2126 slides along the guide member 2127 in the first direction X under the drive of the flexible member 2125.

[0083] In the technical solution of this application embodiment, the second moving mechanism 212 includes a second frame 2121, a second driving element 2122, a driving wheel 2124, a driven wheel 2123, a flexible member 2125, a blade holder 2126, and a guide member 2127. The second driving element 2122, the driving wheel 2124, the driven wheel 2123, and the flexible member 2125 cooperate to drive the cutting blade 22 to translate in the first direction X. The flexible member 2125 has a certain degree of flexibility and elasticity, which can reduce the impact of the cutting blade 22 on the electrode strip and improve the cutting quality. The guide member 2127 slides with the blade holder 2126 to provide guidance for the translation of the cutting blade 22 in the first direction X, thereby improving the cutting accuracy.

[0084] As shown in Figures 1 to 3, according to some embodiments of this application, optionally, the driving wheel 2124 and the driven wheel 2123 are both synchronous belt pulleys; the flexible member 2125 is a synchronous belt; the flexible member 2125 meshes with the driving wheel 2124 and the driven wheel 2123 for transmission; and the guide member 2127 is a linear guide rail.

[0085] Both the driving wheel 2124 and the driven wheel 2123 have teeth on their circumferential surfaces, and the flexible component 2125 also has teeth. The driving wheel 2124 and the driven wheel 2123 mesh with the flexible component 2125 for transmission. During meshing transmission, the outer diameters of the driving wheel 2124 and the driven wheel 2123 can be the same or different.

[0086] For example, the driving wheel 2124 and the driven wheel 2123 have the same outer diameter and the same number of teeth, which can improve the interchangeability of the driving wheel 2124 and the driven wheel 2123. The second moving mechanism 212 can be equipped with a tensioning wheel to control the tension of the flexible member 2125, or the second moving mechanism 212 can be without a tensioning wheel.

[0087] In the technical solution of this application embodiment, both the driving pulley 2124 and the driven pulley 2123 are synchronous belt pulleys, and the flexible member 2125 is a synchronous belt. During transmission, it has a constant transmission ratio, which can improve the accuracy of electrode belt cutting. Simultaneously, the flexible member 2125 also has the characteristics of belt drive buffering and vibration absorption, which can mitigate the impact of the cutting blade 22 on the electrode belt. The guide member 2127 is a linear guide rail, which can improve the cutting accuracy of the cutting blade 22.

[0088] As shown in Figures 1 to 3, according to some embodiments of this application, optionally, the second moving mechanism 212 further includes a positioning element 2128, which includes a first positioning element 21281, a second positioning element 21282, a third positioning element 21283, and a positioning reference element 21284. The first positioning element 21281 is disposed on the second frame 2121 and configured to position the initial position of the cutting blade 22. The second positioning element 21282 is disposed on the second frame 2121 and configured to position the cutting start end of the cutting blade 22. The third positioning element 21283 is disposed on the second frame 2121 and configured to position the cutting end end of the cutting blade 22. The positioning reference element 21284 is disposed on the blade holder 2126 and configured to provide a positioning reference for the first positioning element 21281, the second positioning element 21282, and the third positioning element 21283.

[0089] The first positioning element 21281, the second positioning element 21282, and the third positioning element 21283 are all mounted on the second frame 2121. In the first direction X, the second positioning element 21282 is located between the first positioning element 21281 and the third positioning element 21283, and the distance between the second positioning element 21282 and the first positioning element 21281 is greater than the distance between the second positioning element 21282 and the third positioning element 21283.

[0090] The positioning reference component 21284 is mounted on the blade holder 2126 and serves as the positioning reference for the cutting blade 22. The positioning reference component 21284 cooperates with the first positioning element 21281, the second positioning element 21282, and the third positioning element 21283 to mark the initial position, the cutting start end, and the cutting end end of the cutting blade 22.

[0091] When the cutting blade 22 is between the initial position and the cutting start end, it does not contact the electrode strip. The cutting blade 22 cuts the electrode strip from the cutting start end to the cutting end, thereby dividing the cutting stroke of the cutting blade 22 into two parts in the first direction X. This facilitates differentiated control of the stroke of the cutting blade 22 (for example, the moving speed of the cutting blade 22 can be differentiated when the electrode strip is not being cut and when the electrode strip is being cut), and reduces the possibility of interference between the cutting blade 22 and the electrode strip (for example, when the moving mechanism 21 drives the cutting blade 22 to translate along the second direction Y, placing the cutting blade 22 in the initial position can reduce the possibility of interference between the cutting blade 22 and the electrode strip).

[0092] For example, the first positioning element 21281, the second positioning element 21282, and the third positioning element 21283 are all slot-shaped photoelectric sensors, and the positioning reference element 21284 is a light-shielding plate mounted on the tool holder 2126.

[0093] In the technical solution of this application embodiment, the positioning component 2128 includes a first positioning element 21281, a second positioning element 21282, a third positioning element 21283 and a positioning reference component 21284, which can mark the initial position, cutting start end and cutting end of the cutting blade 22, so as to facilitate flexible control of the cutting blade 22 and improve the cutting quality.

[0094] As shown in Figures 1 to 3, according to some embodiments of this application, optionally, the winding device 100 further includes an adsorption assembly 30, which includes an adsorption chamber 31, a pressure gauge 32, and a solenoid valve 33. The adsorption chamber 31 is disposed on the moving mechanism 21, and the adsorption chamber 31 is provided with an adsorption surface. The adsorption surface is provided with adsorption holes, and the adsorption holes are configured to adsorb the electrode strip under negative pressure in the first direction X. The pressure gauge 32 is connected to the adsorption chamber 31 and is configured to detect the air pressure in the adsorption chamber 31. The solenoid valve 33 is connected to the adsorption chamber 31 and is configured to control the air pressure in the adsorption chamber 31.

[0095] The adsorption chamber 31 is connected to an external pump source via a pipeline. Under the suction action of the pump source, a negative pressure can be formed inside the adsorption chamber 31. When the adsorption chamber 31 is close to the electrode strip, the adsorption surface can generate suction through the adsorption holes, thereby fixing the electrode strip to the adsorption surface.

[0096] Pressure gauge 32 can be installed on adsorption chamber 31 and directly connected to adsorption chamber 31; or pressure gauge 32 can be installed on pipeline and indirectly connected to adsorption chamber 31. Solenoid valve 33 can be installed on adsorption chamber 31 and directly connected to adsorption chamber 31; or solenoid valve 33 can be installed on pipeline and indirectly connected to adsorption chamber 31.

[0097] For example, when the pressure gauge 32 and the solenoid valve 33 are installed on the pipeline, the first frame 2111 can be selected as the base and fixed on the first frame 2111. The pressure gauge 32 is located between the solenoid valve 33 and the adsorption chamber 31, and is always in communication with the adsorption chamber 31 to detect the actual pressure in the adsorption chamber 31 in real time. The solenoid valve 33 can adjust its opening degree, thereby regulating the air pressure in the adsorption chamber 31 and the opening and closing of the pipeline.

[0098] In the technical solution of this application embodiment, the winding device 100 is equipped with an adsorption component 30. The adsorption chamber 31 of the adsorption component 30 can adsorb the electrode strip onto the adsorption surface, fix the electrode strip, facilitate the cutting of the electrode strip, and improve the cutting accuracy. The adsorption component 30 is equipped with a pressure gauge 32, which can detect the actual pressure of the adsorption chamber 31, improve the reliability of the adsorption chamber 31, and reduce abnormal operation due to excessive or insufficient adsorption force (excessive adsorption force may damage the electrode strip, and insufficient adsorption force may cause the electrode strip to fall off), thus reducing electrode waste. The adsorption component 30 is equipped with a solenoid valve 33, which can adjust the adsorption force to further improve the reliability of the adsorption chamber 31 and can also adapt to different types and sizes of electrode strips, expanding its applicability.

[0099] As shown in Figures 1 to 3, according to some embodiments of this application, optionally, the adsorption assembly 30 further includes a baffle 34, the baffle 34 including a connecting portion 341 and a guiding portion 342; the connecting portion 341 is configured to be adjustablely disposed on the moving mechanism 21; the guiding portion 342 is connected to the connecting portion 341, the guiding portion 342 is provided with a guiding surface, the guiding surface is configured to guide the electrode strip to smoothly transition to the connecting portion 341.

[0100] The connecting part 341 is the part of the baffle 34 used to connect the moving mechanism 21. The connecting part 341 is adjustablely mounted on the second frame 2121 in the second direction Y. The mounting position of the connecting part 341 on the second frame 2121 is adjustable.

[0101] For example, the connecting part 341 is provided with an extension hole, the length direction of which is parallel to the second direction Y. The second frame 2121 is provided with a threaded hole, and the baffle 34 can be fastened to the second frame 2121 by sequentially inserting bolts through the extension hole and the threaded hole. When adjusting the installation position of the baffle 34, the bolts can be loosened first, and then the position of the baffle 34 can be adjusted along the second direction Y before tightening the bolts. The extension hole provides adjustment allowance for the baffle 34.

[0102] The guide portion 342 is connected to the connecting portion 341. The guide portion 342 and the connecting portion 341 can be integrally formed, that is, the baffle 34 is integrally molded. Alternatively, the guide portion 342 and the connecting portion 341 can be separately formed. The guide surface is the surface of the guide portion 342 that receives the electrode strip. Exemplarily, the guide surface is arc-shaped and extends in a direction away from the adsorption chamber 31. Specifically, the guide surface is arc-shaped, and the middle part of the arc protrudes towards the electrode strip.

[0103] As the adsorption assembly 30 approaches the electrode strip along the second direction Y, the guiding surface first contacts the electrode strip, and then the adsorption surface adheres to the electrode strip. The guiding surface is arc-shaped, which allows the electrode strip to smoothly transition from adhering to the guiding surface to contacting the adsorption surface.

[0104] In the technical solution of this application embodiment, the adsorption assembly 30 is provided with a baffle 34, which includes a connecting part 341 and a guiding part 342. The connecting part 341 can provide flexible adjustment for the installation position of the baffle 34 on the second frame 2121. The guiding part 342 receives the electrode strip through the guiding surface, which can smoothly transition the electrode strip to the adsorption surface, reduce the collision between the electrode strip and the edge of the adsorption surface, effectively protect the surface of the electrode strip, and reduce creases on the electrode strip.

[0105] Please refer to Figures 7 to 9. Figure 7 is a schematic diagram of a winding device according to some embodiments of this application (II); Figure 8 is a schematic diagram of a winding device according to some embodiments of this application (III); and Figure 9 is a schematic diagram of a winding device according to some embodiments of this application (IV). In Figures 7 to 9, the dashed lines represent the displacement process of the electrode strip under the action of the automatic winding mechanism 60.

[0106] According to some embodiments of this application, optionally, the roll 11 includes a first roll 111 and a second roll 112, the first roll 111 and the second roll 112 being spaced apart in the third direction Z; the cutting component 20 is located between the first roll 111 and the second roll 112; the third direction Z intersects with the first direction X.

[0107] The first direction X, the second direction Y, and the third direction Z intersect each other in pairs. For example, the first direction X, the second direction Y, and the third direction Z can be perpendicular to each other in pairs. Taking the third direction Z as the vertical direction, the first direction X and the second direction Y can be two mutually perpendicular directions on a horizontal plane. The reel 11 includes a first reel 111 and a second reel 112. The first reel 111 and the second reel 112 are backups of each other, one in use and one on standby. The first reel 111 is located above the second reel 112.

[0108] In the technical solution of this application embodiment, the roll 11 includes a first roll 111 and a second roll 112, which serve as backups for each other and can improve efficiency. The cutting component 20 is located between the first roll 111 and the second roll 112. Using one cutting component 20 to complete the cutting of the electrode strips on the first roll 111 and the second roll 112 can improve the utilization rate of the cutting component 20.

[0109] As shown in Figure 2, according to some embodiments of this application, optionally, the adsorption chamber 31 includes a first adsorption chamber 311 and a second adsorption chamber 312, with the first adsorption chamber 311 and the second adsorption chamber 312 respectively disposed on both sides of the cutting edge 22 in the third direction Z.

[0110] The first adsorption chamber 311 is located between the cutting blade 22 and the first winding drum 111, and the second adsorption chamber 312 is located between the cutting blade 22 and the second winding drum 112. The first adsorption chamber 311 and the second adsorption chamber 312 can be independent, each equipped with a pressure gauge 32 and a solenoid valve 33. During electrode strip cutting, the first adsorption chamber 311 and the second adsorption chamber 312 simultaneously adsorb the electrode strip, thus fixing it in place.

[0111] In the technical solution of this application embodiment, the adsorption chamber 31 includes a first adsorption chamber 311 and a second adsorption chamber 312, which can fix the electrode strip on both sides of the cutting blade 22 at the same time, improve the reliability of fixing the electrode strip, and thus improve the cutting quality.

[0112] As shown in Figures 4 and 5, according to some embodiments of this application, the winding device 100 may optionally include a pressure roller assembly 40, which includes a roller frame 41, an auxiliary roller 42, and a third drive element 43. The roller frame 41 is disposed on the moving mechanism 21, and the roller frame 41 is located between the second roll 112 and the adsorption chamber 31 in the third direction Z. The auxiliary roller 42 is disposed on the roller frame 41, and the axis of the auxiliary roller 42 is parallel to the first direction X. The third drive element 43 is disposed on the roller frame 41 and connected to the auxiliary roller 42. The third drive element 43 is configured to drive the auxiliary roller 42 to rotate forward and backward.

[0113] The roller frame 41 is mounted on the second frame 2121 to provide a mounting position for the auxiliary roller 42 and the third drive element 43. The spatial position of the auxiliary roller 42 can be defined as being located between the second adsorption chamber 312 and the second drum 112 in the third direction Z.

[0114] The auxiliary roller 42 is rotatably mounted on the roller frame 41. The third drive element 43 is mounted on the roller frame 41 and connected to the auxiliary roller 42, which can drive the auxiliary roller 42 to rotate. The forward and reverse rotation of the auxiliary roller 42 are the two directions of rotation of the roller. Forward rotation is counterclockwise rotation, and reverse rotation is clockwise rotation.

[0115] For example, the auxiliary roller 42 can be rotatably connected to the roller frame 41 through a bearing, and the third drive element 43 can be a servo motor. The servo motor drives the auxiliary roller 42 through a reducer or directly. When connected to the auxiliary roller 42, the connection can be achieved through a coupling.

[0116] The auxiliary roller 42 is used in conjunction with the second drum 112 to wind or adjust the electrode strip. When the auxiliary roller 42 comes into contact with the electrode strip on the second drum 112, it can apply pressure to the electrode strip. Various types of auxiliary rollers can be selected; for example, the auxiliary roller 42 can be a brush roller, a rubber roller, a steel roller, etc.

[0117] In the technical solution of this application embodiment, the winding device 100 includes a pressure roller assembly 40, which includes a roller frame 41, an auxiliary roller 42, and a third driving element 43. The auxiliary roller 42 is located between the second adsorption chamber 312 and the second roll 112, and can abut against the electrode strip roll on the second roll 112. Under the action of the third driving element 43, it rotates in coordination with the second roll 112 to wind the electrode strip near the break into the electrode strip roll on the second roll 112, reducing wrinkles on the electrode strip roll and thus improving the quality of the electrode strip. At the same time, the reduction of wrinkles on the electrode strip roll can also reduce the misjudgment of the break by the automatic glue coating mechanism (misjudging wrinkles as breaks), thereby reducing electrode waste caused by incorrect glue coating position.

[0118] As shown in Figures 7 to 9, according to some embodiments of this application, optionally, the winding device 100 further includes a translation component 50, the cutting component 20 is disposed on the translation component 50, and the translation component 50 is configured to drive the cutting component 20 to translate in the third direction Z.

[0119] The translation component 50 is mounted on the main body of the winding device 100 to provide a mounting position for the cutting component 20. The translation component 50 is a mechanism capable of linear motion, which can drive the cutting component 20 to translate in the Z-direction. For example, the translation component 50 can directly drive the cutting component 20 to translate in the Z-direction via a cylinder, hydraulic cylinder, linear motor, etc.; the translation component 50 can also indirectly drive the cutting component 20 to translate in the Z-direction via a rack and pinion drive, belt drive, chain drive, etc.

[0120] The first spool 111 and the second spool 112 are arranged vertically, with the second spool 112 located below the first spool 111. When the second spool 112 is fully wound and the first spool 111 needs to be switched, the electrode strip needs to be cut near the first spool 111 so that the electrode strip can be wound onto the first spool 111. At this time, the translation component 50 can drive the cutting component 20 to approach the first spool 111 along the third direction Z. Conversely, when the electrode strip on the first spool 111 needs to be cut, the translation component 50 can drive the cutting component 20 to approach the second spool 112 along the third direction Z.

[0121] As shown in Figures 7 and 8, when the cutting blade 22 cuts the electrode strip near the first drum 111, if the electrode strip falls under its own weight, it is prone to compression and wrinkling during the fall, causing the automatic gluing equipment to fail to accurately identify the cut and resulting in failed gluing and waste. Therefore, after the cutting blade 22 cuts the electrode strip, the second adsorption chamber 312 continues to adsorb the electrode strip. The second drum 112 rotates, and the translation component 50 drives the second adsorption chamber 312 to move down synchronously until the auxiliary roller 42 abuts against the electrode strip roll on the second drum 112. The auxiliary roller 42 rotates in opposite directions to the second drum 112, allowing the second drum 112 to pull the electrode strip away from the second adsorption chamber 312. Furthermore, this section of the electrode strip can be wound into the second drum 112 with high quality under the clamping of the second drum 112 and the auxiliary roller 42, reducing the wrinkles formed on the electrode strip. In addition, when the second drum 112 rotates in the opposite direction, the auxiliary roller 42 can also rotate in the opposite direction to the second drum 112 under the drive of the third drive element 43, so as to turn the broken end of the electrode strip on the second drum 112 to the adhesive application position.

[0122] In the technical solution of this application embodiment, the winding device 100 is provided with a translation component 50. The translation component 50 works in conjunction with the pressure roller component 40, the adsorption component 30, and the cutting component 20 to reduce wrinkles formed on the outer ring of the electrode strip during winding, thereby improving the winding quality. During cutting, the translation component 50 drives the cutting component 20 to approach the empty roll 11 to be wound, which can shorten the length of the tail material after cutting the electrode strip and reduce waste.

[0123] This application also provides an electrode rolling device, which includes the winding device 100 provided in the above embodiments.

[0124] As shown in Figures 1 to 9, according to some embodiments of this application, this application provides a winding device 100, which includes a roll assembly 10, a cutting assembly 20, an adsorption assembly 30, a pressure roller assembly 40, and a translational assembly 50. The following description uses the first direction X and the second direction Y as two mutually perpendicular directions in the horizontal plane, with the third direction Z being the vertical direction. The axis of the roll 11 of the roll assembly 10 is arranged along the first direction X. The roll 11 includes a first roll 111 and a second roll 112 arranged at intervals, with the second roll 112 located below the first roll 111. The cutting assembly 20 includes a moving mechanism 21 and a cutting blade 22. The moving mechanism 21 includes a first moving mechanism 211 and a second moving mechanism 212. The first moving mechanism 211 drives the cutting blade 22 to translate along the second direction Y, and the second moving mechanism 212 drives the cutting blade 22 to translate along the first direction X. The adsorption assembly 30 includes an adsorption chamber 31, a baffle 34, a pressure gauge 32, and a solenoid valve 33. The adsorption chamber 31 includes a first adsorption chamber 311 and a second adsorption chamber 312. The first adsorption chamber 311 is located above the cutting blade 22, and the second adsorption chamber 312 is located below the cutting blade 22. There are two baffles 34, which are respectively installed above the first adsorption chamber 311 and below the second adsorption chamber 312. The pressure roller assembly 40 includes a roller frame 41, an auxiliary roller 42, and a third drive element 43. The auxiliary roller 42 is installed on the roller frame 41 and is located between the second adsorption chamber 312 and the second roll 112. The third drive element 43 is a servo motor that drives the auxiliary roller 42 to rotate. The cutting assembly 20 is installed on the translation assembly 50 and, driven by the translation assembly 50, translates (moves up and down) along the third direction Z to approach the first roll 111 or the second roll 112.

[0125] As shown in Figure 7, when the second roll 112 is fully wound, the winding device 100 stops upon receiving a roll change command. The roll change pressure roller presses the electrode strip onto the first roll 111 for the first roll 111 to wind the electrode strip. The translation component 50 drives the cutting component 20 to move upwards and approach the first roll 111. The first driving element 2112 (which can be a cylinder) pushes the first adsorption chamber 311, the second adsorption chamber 312, and the second moving element along the second direction Y to a position close to the electrode strip to be cut. The first adsorption chamber 311 and the second adsorption chamber 312 adsorb onto the surface of the electrode strip. The second driving element 2122 drives the cutting blade 22 to cut the electrode strip along the first direction X. After cutting the electrode strip, the cutting blade 22 returns to its initial position. The first adsorption chamber 311 stops adsorbing, and the first roll 111 begins to wind the electrode strip. As shown in Figure 8, the second adsorption chamber 312 continuously adsorbs the electrode strip. Simultaneously, as the second drum 112 rotates, the translational assembly 50 moves the second adsorption chamber 312 towards the second drum 112 until it contacts the electrode strip coil on the auxiliary roller 42. The second drum 112 pulls the portion of the electrode strip near the break from the second adsorption chamber 312, and this portion of the electrode strip is drawn back onto the second drum 112 under the combined action of the second drum 112 and the auxiliary roller 42.

[0126] As shown in Figure 9, the first roll 111 is fully wound. When the winding device 100 receives the roll change command, it stops. The roll change pressure roller presses the electrode strip onto the second roll 112 so that the second roll 112 can wind the electrode strip. The cutting blade 22 cuts the electrode strip near the second roll 112. The first roll 111 rotates and winds the part of the electrode strip near the cut. This part hangs down naturally under its own weight, which can reduce wrinkles during winding.

[0127] The roll changing pressure roller is a component of the automatic roll changing mechanism 60 on the winding device 100. Its function can be achieved by using a molded component, which will not be described in detail here.

[0128] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A winding device, comprising: A spool assembly includes a spool configured to rotatably wind an electrode strip, the axis of the spool being arranged along a first direction; A cutting assembly is disposed upstream of the roll assembly. The cutting assembly is configured to cut the electrode strip. The cutting assembly includes a moving mechanism and a cutting blade disposed on the moving mechanism. The moving mechanism drives the cutting blade to one end of the electrode strip to be cut in the first direction and slides along the first direction to perform cutting.

2. The winding device according to claim 1, wherein, The moving mechanism includes: A first moving mechanism is configured to drive the cutting blade to translate along a second direction to approach or move away from the electrode strip to be cut. A second moving mechanism is disposed on the first moving mechanism, and the cutting blade is disposed on the second moving mechanism. The second moving mechanism is configured to drive the cutting blade to cut the electrode strip to be cut along the first direction. The first direction intersects with the second direction.

3. The winding device according to claim 2, wherein, The first moving mechanism includes: The first frame includes a mounting part, a guide part, and a limiting part. The guide part is connected to the mounting part and the limiting part respectively. The guide part slides with the second moving mechanism in the second direction. The limiting part is configured to limit the second moving mechanism in the second direction. A first driving element, connected between the mounting portion and the second moving mechanism, is configured to drive the second moving mechanism to slide in the second direction.

4. The winding device according to claim 3, wherein, The limiting part is provided with an adjusting member, the adjusting member comprising: An adjusting rod is threadedly connected to the limiting part, and the axis of the adjusting rod is arranged parallel to the second direction; The locking element is threadedly connected to the adjusting rod and abuts against the limiting part.

5. The winding device according to any one of claims 2 to 4, wherein, The second moving mechanism includes: The second frame slides in conjunction with the first moving mechanism; The second drive element, disposed on the second frame, is configured to provide rotational power; The drive wheel is rotatably mounted on the second frame and connected to the second drive element; Driven wheel, rotatably mounted on the second frame; A flexible component is disposed on the driving wheel and the driven wheel, and is in transmission cooperation with the driving wheel and the driven wheel; A tool holder is disposed on the flexible member, and the cutting edge is disposed on the tool holder; A guide member is disposed on the second frame and slides in cooperation with the tool holder. The guide member is configured to provide guidance for the tool holder in the first direction.

6. The winding device according to claim 5, wherein, Both the driving pulley and the driven pulley are synchronous belt pulleys, the flexible component is a synchronous belt, the flexible component meshes with the driving pulley and the driven pulley for transmission, and the guide component is a linear guide rail.

7. The winding device according to claim 5 or 6, wherein, The second moving mechanism further includes a positioning element, the positioning element comprising: A first positioning element is disposed on the second frame and configured to position the initial position of the cutting blade; The second positioning element is disposed on the second frame and is configured to position the cutting start end of the cutting blade; A third positioning element is disposed on the second frame and configured to position the cutting end of the cutting blade; A positioning reference element is disposed on the tool holder and configured to provide a positioning reference for the first positioning element, the second positioning element, and the third positioning element.

8. The winding device according to any one of claims 1 to 7, wherein, The winding device further includes an adsorption component, which comprises: An adsorption chamber is disposed on the moving mechanism. The adsorption chamber is provided with an adsorption surface, and the adsorption surface is provided with adsorption holes. The adsorption holes are configured to adsorb the electrode strip under negative pressure in the first direction. A pressure gauge, connected to the adsorption chamber, is configured to detect the gas pressure inside the adsorption chamber; A solenoid valve, connected to the adsorption chamber, is configured to control the air pressure inside the adsorption chamber.

9. The winding device according to claim 8, wherein, The adsorption assembly further includes a baffle, the baffle comprising: The connecting part is configured to be adjustablely disposed on the moving mechanism; A guide portion is connected to the connecting portion. The guide portion is provided with a guide surface, which is configured to guide the electrode strip to smoothly transition to the adsorption surface.

10. The winding device according to claim 8 or 9, wherein, The reel includes a first reel and a second reel, which are spaced apart in a third direction. The cutting assembly is located between the first roll and the second roll; The third direction intersects with the first direction.

11. The winding device according to claim 10, wherein, The adsorption chamber includes a first adsorption chamber and a second adsorption chamber, which are respectively disposed on both sides of the cutting edge in the third direction.

12. The winding device according to claim 10 or 11, wherein, The winding device further includes a pressure roller assembly, the pressure roller assembly comprising: A roller frame, mounted on the moving mechanism, is located in a third direction between the second drum and the adsorption chamber. An auxiliary roller is disposed on the roller frame, and the axis of the auxiliary roller is parallel to the first direction; A third driving element is disposed on the roller frame and connected to the auxiliary roller. The third driving element is configured to drive the auxiliary roller to rotate forward and backward.

13. The winding device according to any one of claims 10 to 12, wherein, The winding device further includes a translation component, and the cutting component is disposed on the translation component. The translation component is configured to drive the cutting component to translate in the third direction.

14. An electrode rolling device, comprising a winding device as described in any one of claims 1 to 13.

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