Pole piece cutting device and system

Abstract

The utility model provides a pole piece cutting device and system. The pole piece cutting device comprises a cutting tool, a traction mechanism and an adjusting platform. One end of the traction mechanism is fixedly arranged on the adjusting platform; the other end of the traction mechanism is connected with the cutting tool, and the traction mechanism is configured to control the cutting tool to move in the first direction; the first direction is a direction perpendicular to the movement of the pole piece; the cutting tool is configured to rotate along with the adjusting platform so as to adjust the relative position of the cutting tool and the pole piece. According to the cutting device, the adjusting platform is arranged, and the cutting tool is arranged on the adjusting platform, so that the cutting tool can rotate along with the adjusting platform, and then angle adjustment of the cutting tool is achieved. When the pole piece is cut, the cutting tool and the edge, in the moving direction of the pole piece, of the pole piece are controlled to be in the parallel state, when the pole piece to be cut has the abnormal conditions such as raised grains, the cut pole piece can be in a relatively fixed shape, and the regularity of the shape of the cut pole piece is improved.

Description

Technical Field

[0001] The present application relates to the field of battery production, and more specifically, to a pole piece cutting device and system. Background Art

[0002] Electrodes, usually referring to the positive and negative electrodes in batteries, are the basic components for battery energy storage and release. The design and manufacture of electrode sheets are key steps in the battery production process and have a decisive impact on the overall performance of the battery.

[0003] However, in the current process of generating pole pieces, due to the error in parallelism between the upper roller and the lower roller in the pole piece traction device, the superimposed material strips may have certain wavy edges, causing the pulled material strips to be offset in the vertical direction of the tape run, which in turn causes the cut pole pieces to be trapezoidal, affecting the regularity of the pole piece shape. Utility Model Content

[0004] In view of this, an object of an embodiment of the present application is to provide a pole piece cutting device and system that can improve the regularity of the pole piece shape.

[0005] In the first aspect, an embodiment of the present application provides a pole piece cutting device, comprising: a cutting tool, a traction mechanism and an adjustment platform; one end of the traction mechanism is fixedly arranged on the adjustment platform; the other end of the traction mechanism is connected to the cutting tool, and the traction mechanism is configured to control the cutting tool to move in a first direction; wherein the first direction is a direction perpendicular to the movement of the pole piece; wherein the cutting tool is configured to rotate with the adjustment platform to adjust the relative position of the cutting tool and the pole piece.

[0006] In the above implementation process, by setting an adjustment platform and setting the cutting tool on the adjustment platform, the cutting tool can rotate with the adjustment platform, thereby realizing the angle adjustment of the cutting tool. When cutting the pole piece, the cutting tool is controlled to be parallel to the edge of the pole piece along the direction of movement of the pole piece. When the pole piece to be cut has abnormal conditions such as wavy lines, the cut pole piece can also be made into a relatively fixed shape, thereby improving the regularity of the shape of the pole piece after cutting.

[0007] In one embodiment, the cutting tool includes an upper tool and a lower tool; the traction mechanism includes: a bracket and a connecting piece; one end of the bracket is fixedly arranged on the adjustment platform; the lower tool is fixedly arranged on the adjustment platform; the upper tool is connected to the end of the bracket away from the adjustment platform through the connecting piece; the upper tool and the lower tool are both arranged in the first direction, and the upper tool is arranged above the lower tool; wherein, when the upper tool falls, the upper tool and the lower tool are closed.

[0008] In the above implementation process, since the local stress on the cutting edge of the cutting tool is large and concentrated during the continuous cutting of the pole pieces, setting the cutting tool to a structure including an upper tool and a lower tool helps to disperse the cutting edge pressure, reduce the tool wear caused by frequent extrusion, shearing, friction and cyclic alternating mechanical actions, and extend the service life of the cutting tool.

[0009] In one embodiment, the connecting member includes: a traction rope and a wheel; the wheel is fixedly arranged at one end of the bracket away from the adjustment platform; one end of the traction rope is connected to the wheel, and the other end of the traction rope is connected to one end of the upper tool away from the lower tool; wherein the upper tool is configured to rise or fall under the traction of the traction rope.

[0010] In the above implementation process, by configuring the connecting member to include a traction rope and a wheel, since the traction rope and the wheel are common and simple structures, the structure of the connecting member can be simplified as a whole, while reducing the configuration cost of the connecting member.

[0011] In one embodiment, it further includes: a power device; the power device is connected to the adjustment platform; wherein the adjustment platform is configured to rotate under the control of the power device.

[0012] In the above implementation process, by setting a power device connected to the adjustment platform, the adjustment platform can be automatically adjusted by the power device, thereby realizing automatic adjustment of the adjustment platform and reducing the work intensity of the staff.

[0013] In one embodiment, the adjustment platform is a rotating platform; the rotating platform is connected to the power device and is configured to rotate under the control of the power device.

[0014] In the above implementation process, since the rotating platform has a simple structure and is easy to implement, and the rotating platform can rotate under the action of external force, by setting the adjustment platform as a rotating platform, the relative position of the cutting tool and the pole piece can be adjusted while simplifying the structure of the adjustment platform.

[0015] In one embodiment, the adjustment platform includes: a support plate and a reduction device; the support plate is mounted on the reduction device; the reduction device is connected to the power device; wherein the reduction device is configured to move under the control of the power device, and the support plate is configured to rotate under the action of the reduction device.

[0016] In the above implementation process, since the reduction device can accurately control the rotation angle and speed through self-locking, pulse signals, etc., the rotation accuracy of the adjustment platform can be improved by setting the adjustment platform as a structure of a reduction device plus a support plate.

[0017] In a second aspect, an embodiment of the present application further provides a pole piece cutting system, comprising: a pole piece traction device, a pole piece conveying device and the pole piece cutting device in the above-mentioned first aspect, or any possible embodiment of the first aspect; the pole piece traction device is arranged at one end of the pole piece cutting device; the pole piece conveying device is arranged at the other end of the pole piece cutting device away from the pole piece traction device; wherein, the pole piece traction device is configured to transfer the pole piece to be cut to the pole piece cutting device, the pole piece cutting device is configured to cut the pole piece to be cut, and the pole piece conveying device is configured to convey the cut pole piece.

[0018] In the above implementation process, by providing a pole piece cutting device including an adjustment platform in the pole piece cutting system, the cutting tool in the pole piece cutting device can rotate with the adjustment platform, thereby realizing the angle adjustment of the cutting tool. When cutting the pole piece, the cutting tool is controlled to be parallel to the edge of the pole piece along the direction of movement of the pole piece. When the pole piece to be cut has abnormal conditions such as wavy lines, the cut pole piece can also be made into a relatively fixed shape, thereby improving the regularity of the shape of the pole piece after cutting.

[0019] In one embodiment, it also includes: a detection device; the detection device is arranged in a first direction and located above the pole piece conveying device; the first direction is a direction of movement of the pole piece perpendicular to the pole piece; wherein the detection device is configured to obtain detection information of the pole piece after cutting, the detection information is configured to determine the pole piece angle of the pole piece after cutting, and the pole piece angle is configured to adjust the cutting tool angle.

[0020] In the above implementation process, a detection device is set up, which is used to detect the actual pole piece angle after cutting, and the rotation of the adjustment platform is controlled by the pole piece angle, that is, the position of the cutting tool is reversely adjusted according to the actual situation after the pole piece is cut, so as to improve the accuracy of the rotation of the adjustment platform.

[0021] In one embodiment, the detection device is: an image acquisition device; the image acquisition device is configured to acquire a pole piece image of the cropped pole piece; wherein the pole piece image is configured to determine a pole piece angle of the cropped pole piece.

[0022] In the above implementation process, by setting the detection device as an image acquisition device, the image acquisition device captures the image of the pole piece and determines the pole piece angle information through a camera and an image processing algorithm. Its accuracy is higher than that of ordinary sensors and other devices, which can improve the accuracy of determining the pole piece angle. In addition, since the image acquisition device processes the image, it can process pole pieces of various shapes and sizes, without frequently changing the measuring tool or adjusting the measuring parameters, which increases the flexibility of the detection device.

[0023] In one embodiment, it further includes: a processing device; the processing device connects the detection device and the pole piece cutting device; wherein the processing device is configured to determine the pole piece angle according to the detection information.

[0024] In the above implementation process, a processing device is set in the pole piece cutting system. The processing device can be used to determine the pole piece angle according to the detection information obtained by the detection device, thereby realizing automatic adjustment of the pole piece cutting device in the pole piece cutting system, thereby reducing the work intensity of the staff and improving the adjustment accuracy of the pole piece cutting device.

[0025] In order to make the above-mentioned objects, features and advantages of the present application more obvious and understandable, embodiments are given below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic diagram of a pole piece cutting device when the cutting tool provided in the embodiment of the present application is a single-blade tool;

[0028] Figure 2 A schematic diagram of a pole piece cutting device when the cutting tool provided in the embodiment of the present application is a double-blade tool;

[0029] Figure 3 A schematic diagram of a pole piece cutting system provided in an embodiment of the present application.

[0030] Description of the drawings: 110 - cutting tool, 111 - upper tool, 112 - lower tool, 120 - traction mechanism, 130 - adjustment platform, 200 - pole piece traction device, 300 - pole piece conveying device, 400 - detection device. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present application, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are orientations or positional relationships that are commonly visited when the application product is used. They 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 cannot be interpreted as a limitation of the present application.

[0035] In the description of this application, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" 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, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] With the development of the new energy industry, lithium batteries are becoming an increasingly indispensable part of it. In the electrode cutting process, the size and shape of the electrode is directly related to the edge size of the negative electrode covering the positive electrode, and the angle of the cut electrode affects the safety performance of the battery cell.

[0037] Ideally, the upper and lower rollers in the pole piece traction device should maintain a strict parallel state to ensure that the material strip can be smoothly transported without any deformation. However, in the actual production process, due to various reasons such as manufacturing accuracy, installation adjustment, and wear and tear, the parallelism between the upper and lower rollers is often difficult to achieve the ideal state, and there is a certain error.

[0038] This parallelism error will cause uneven extrusion and stretching forces on the strip during transmission, resulting in wavy edges. The wavy edges may cause the pole piece to shift during cutting, resulting in inaccurate cutting positions, which in turn affects the performance and safety of the battery.

[0039] In view of this, the present application proposes a pole piece cutting device, which sets an adjustment platform and sets a cutting tool on the adjustment platform so that the cutting tool can rotate with the adjustment platform, thereby realizing the angle adjustment of the cutting tool. When cutting the pole piece, the cutting tool is controlled to be parallel to the edge of the pole piece along the direction of movement of the pole piece. When the pole piece to be cut has abnormal conditions such as wavy lines, the cut pole piece can also be made into a relatively fixed shape, thereby improving the regularity of the shape of the pole piece after cutting.

[0040] To facilitate understanding of this embodiment, a pole piece cutting device disclosed in the embodiment of the present application is first introduced in detail.

[0041] like Figure 1 , is a schematic diagram of a pole piece cutting device provided in an embodiment of the present application, comprising: a cutting tool 110 , a traction mechanism 120 and an adjustment platform 130 .

[0042] One end of the traction mechanism 120 is fixedly disposed on the adjustment platform 130 ; the other end of the traction mechanism 120 is connected to the cutting tool 110 .

[0043] The cutting tool 110 is a tool for cutting the pole piece. The cutting tool 110 can be a single-blade tool or a double-blade tool. The specific structure of the cutting tool 110 can be selected according to actual conditions.

[0044] The traction mechanism 120 is configured to control the cutting tool 110 to move in a first direction, that is, to control the cutting tool 110 to rise or fall in the first direction, wherein the first direction is a direction perpendicular to the movement of the pole piece.

[0045] It should be understood that when the cutting tool 110 is a single-blade tool, the cutting tool 110 is arranged above the adjustment platform 130. When the pole piece moves to the adjustment platform 130 and needs to be cut, the cutting tool 110 is controlled to fall by the traction mechanism 120, and the cutting tool 110 falls on the pole piece, and then cuts the pole piece. When the pole piece is cut, the traction mechanism 120 controls the cutting tool 110 to rise along the first direction to remove the cutting tool 110 from the pole piece.

[0046] like Figure 2As shown, when the cutting tool 110 is a double-blade tool, the lower tool 112 is fixedly set on the adjustment platform 130, and the upper tool 111 is set above the adjustment platform 130 through the traction mechanism 120. When the pole piece moves to the lower tool 112 of the adjustment platform 130 and needs to be cut, the upper tool 111 is controlled to fall by the traction mechanism 120, and the upper tool 111 and the lower tool 112 are closed, and then the pole piece is cut. After the pole piece is cut, the traction mechanism 120 controls the upper tool 111 to rise along the first direction to separate the upper tool 111 and the lower tool 112.

[0047] The adjustment platform 130 is configured to be rotatable. The cutting tool 110 is configured to rotate along with the adjustment platform 130 to adjust the relative position between the cutting tool 110 and the pole piece.

[0048] Optionally, the adjusting platform 130 can be rotated manually or automatically. The rotation mode of the adjusting platform 130 can be selected according to actual conditions.

[0049] It is understandable that during the transmission of the pole piece, there may be errors in the parallelism of the upper and lower rollers, which may cause wavy edges to appear on the superimposed material strip. If the cutting tool directly cuts the pole piece with wavy edges during cutting, the shape regularity of the pole piece after cutting may be poor. By setting the adjustment platform 130 to be rotatable, when cutting the pole piece, the cutting tool 110 is driven to rotate by rotating the adjustment platform 130, so that the relative position of the rotating cutting tool 110 and the pole piece remains unchanged as much as possible. That is, the blade of the cutting tool 110 is kept as parallel as possible to the edge of the pole piece in the direction of movement of the pole piece.

[0050] Since the blade of the cutting tool 110 is parallel to the edge of the pole piece in the direction of pole piece movement, the edge cut by the cutting tool 110 and the edge of the pole piece in the direction of pole piece movement are also two parallel edges to each other, thereby making the cut pole piece a parallelogram, thereby improving the regularity of the shape of the cut pole piece.

[0051] In the above implementation process, by setting the adjustment platform 130 and setting the cutting tool 110 on the adjustment platform 130, the cutting tool 110 can rotate with the adjustment platform 130, thereby achieving the angle adjustment of the cutting tool 110. When cutting the pole piece, the cutting tool 110 is controlled to be parallel to the edge of the pole piece along the direction of movement of the pole piece. When the pole piece to be cut has abnormal conditions such as wavy lines, the cut pole piece can also be made into a relatively fixed shape, thereby improving the regularity of the shape of the pole piece after cutting.

[0052] In a possible implementation, the cutting tool 110 includes an upper tool 111 and a lower tool 112 ; the traction mechanism 120 includes: a bracket and a connecting piece.

[0053] Among them, one end of the bracket is fixedly set on the adjustment platform 130; the lower tool 112 is fixedly set on the adjustment platform 130; the upper tool 111 is connected to the end of the bracket away from the adjustment platform 130 through a connecting piece; the upper tool 111 and the lower tool 112 are both set in the first direction, and the upper tool 111 is set above the lower tool 112.

[0054] Optionally, the bracket may be a single support rod arranged along the first direction, and the single support rod is parallel to the upper tool 111. It may also be a double support rod arranged along the first direction and along the direction in which the pole piece moves, wherein one end of the first support rod arranged along the first direction is fixedly arranged on the adjustment platform 130, the other end of the first support rod is fixedly connected to one end of the second support rod along the direction in which the pole piece moves, and the other end of the second support rod is connected to the upper tool 111. The bracket may be a metal bracket, a wooden bracket, a plastic bracket, etc., and the structure and material of the bracket may be selected according to actual conditions.

[0055] The above-mentioned connecting member can be a rigid connecting member, such as a threaded suspension rod, a mechanical arm, etc. The connecting member can also be a flexible connecting member, such as a rope, a wire, a hinge, etc. The specific structure of the connecting member can be selected according to actual conditions.

[0056] The brackets and connectors here may include multiple configuration methods, and the configuration methods of the brackets and connectors are further described in detail with several examples below:

[0057] Example 1: The bracket is a double support rod along the first direction and along the direction in which the pole piece moves, and the connecting member is a rope. Among them, one end of the first support rod arranged along the first direction is fixedly arranged on the adjustment platform 130, and the other end of the first support rod is fixedly connected to one end of the second support rod along the direction in which the pole piece moves. A winding member is arranged at one end of the second support rod away from the first support rod, one end of the rope is fixedly connected to the winding member and wound around the winding member, and the other end of the rope is connected to one end of the upper tool 111. When the position of the upper tool 111 needs to be adjusted, the rope is retracted and released by the winding member to drive the upper tool 111 to move in the first direction.

[0058] Example 2: The bracket is a single support rod arranged along the first direction, and the connecting member is a mechanical arm. One end of the bracket is fixedly arranged on the adjustment platform 130, and the other end of the bracket is connected to one end of the mechanical arm. The end of the mechanical arm away from the bracket is connected to one end of the upper tool 111. When the position of the upper tool 111 needs to be adjusted, the mechanical arm drives the upper tool 111 to move in the first direction by moving in the first direction.

[0059] Example 3: The bracket is a single support rod arranged along the first direction, and the connecting member includes a traction rope and a wheel. One end of the bracket is fixedly arranged on the adjustment platform 130, and the other end of the bracket is fixed to the wheel. One end of the traction rope is connected to the wheel, and the other end of the traction rope is connected to the end of the upper tool 111 away from the lower tool 112. When the position of the upper tool 111 needs to be adjusted, the traction rope is retracted and released by the wheel to drive the upper tool 111 to move in the first direction.

[0060] The above-mentioned arrangement of the bracket and the connecting member is only exemplary, and the specific arrangement of the bracket and the connecting member can be adjusted according to actual conditions.

[0061] The cutting blade 110 is configured such that when the upper blade 111 falls, the upper blade 111 and the lower blade 112 are closed, and when the upper blade 111 rises, the upper blade 111 and the lower blade 112 are separated.

[0062] In the above implementation process, since the local stress on the cutting edge of the cutting tool 110 is large and concentrated during the continuous cutting of the pole pieces, by setting the cutting tool 110 to a structure including an upper tool 111 and a lower tool 112, it helps to disperse the cutting edge pressure, reduce the tool wear caused by frequent extrusion, shearing, friction and cyclic alternating mechanical actions, and extend the service life of the cutting tool 110.

[0063] In a possible implementation, the connecting member includes: a traction rope and a wheel.

[0064] The wheel is fixedly arranged at one end of the bracket away from the adjustment platform 130 ; one end of the traction rope is connected to the wheel, and the other end of the traction rope is connected to one end of the upper tool 111 away from the lower tool 112 .

[0065] The wheel here can be fixed on the bracket by screws, bolts, etc., and the fixing method of this conclusion can be selected according to actual conditions.

[0066] The upper cutter 111 is configured to rise or fall under the traction of a traction rope.

[0067] The traction rope can pull the upper cutter 111 manually or automatically.

[0068] In one embodiment, the wheel is provided with a groove, through which a traction rope can be fixed to the wheel, and the traction rope can be wound around the groove of the wheel. When the position of the upper cutter 111 needs to be adjusted, the traction rope is retracted and released by the wheel to drive the upper cutter 111 to move in the first direction.

[0069] Optionally, the wheel can be a fixed pulley, a movable pulley, or a fixed wheel. The specific structure of the wheel can be selected according to actual conditions.

[0070] In the above implementation process, by configuring the connecting member to include a traction rope and a wheel, since the traction rope and the wheel are common and simple structures, the structure of the connecting member can be simplified as a whole, while reducing the configuration cost of the connecting member.

[0071] In a possible implementation, the pole piece cutting device further includes: a power device.

[0072] The power device is connected to the adjustment platform 130. The power device is configured to provide power to the adjustment platform 130 so that the adjustment platform 130 can rotate. The power device can be a structure such as an electric motor, a motor, a cylinder, etc., and the power device can be selected according to actual conditions.

[0073] The adjusting platform 130 here is configured to rotate under the control of a power device.

[0074] It should be understood that since the adjustment platform 130 is connected to the power device, when it is necessary to control the rotation of the adjustment platform 130, the power device provides corresponding power, and the power provided by the power device drives the adjustment platform 130 to rotate. When the adjustment platform 130 rotates to the target angle, the power device stops providing power to the adjustment platform 130. After the power stops, the adjustment platform 130 stops rotating.

[0075] In one embodiment, the power device is connected to the control device, the power device receives control information sent by the control device, and generates corresponding power under the action of the control information.

[0076] In the above implementation process, by setting a power device connected to the adjustment platform 130, the adjustment platform 130 can be automatically adjusted by the power device, thereby realizing automatic adjustment of the adjustment platform 130 and reducing the work intensity of the staff.

[0077] In a possible implementation, the adjustment platform 130 is a rotating platform.

[0078] The rotating platform is connected to a power device and is configured to rotate under the control of the power device.

[0079] In one implementation, the rotating platform includes a hollow turntable and a support member, and the support member can be a cross roller bearing structure. The hollow turntable is supported by the cross roller bearing structure.

[0080] It should be understood that the rotating platform can also be rotated manually. That is, when the position of the adjustment platform 130 needs to be adjusted, the staff can directly drive the rotating platform to rotate manually to rotate the rotating platform to the target angle, thereby adjusting the relative position of the cutting tool 110 and the pole piece.

[0081] In the above implementation process, since the rotating platform has a simple structure and is easy to implement, and the rotating platform can rotate under the action of external force, by setting the adjustment platform 130 as a rotating platform, the relative position of the cutting tool 110 and the pole piece can be adjusted while simplifying the structure of the adjustment platform 130.

[0082] In a possible implementation, the adjustment platform 130 includes: a support plate and a deceleration device.

[0083] The support plate is installed on the reduction device; the reduction device is connected to the power device.

[0084] The reduction device here is configured to move under the control of the power device, and the support plate is configured to rotate under the action of the reduction device.

[0085] The support plate is fixedly mounted on the reduction gear, and the support plate is configured to move along with the movement of the reduction gear.

[0086] The support plate is a fixed plate-shaped structure, and the relative position between the support plate and the reduction device is fixed, that is, the support plate cannot rotate independently.

[0087] It should be understood that the function of the speed reducer is to match the rotation speed and transmit torque between the power device and the support plate, that is, the speed reducer converts the power of the power device into rotation information to drive the support plate to rotate.

[0088] In the above implementation process, since the reduction device can accurately control the rotation angle and speed through self-locking, pulse signals, etc., the rotation accuracy of the adjustment platform 130 can be improved by setting the adjustment platform 130 to a structure of a reduction device plus a support plate.

[0089] like Figure 3 , is a schematic diagram of a pole piece cutting system provided in an embodiment of the present application, comprising: a pole piece traction device 200, a pole piece conveying device 300 and the pole piece cutting device in the above-mentioned embodiment.

[0090] The pole piece traction device 200 is arranged at one end of the pole piece cutting device; the pole piece conveying device 300 is arranged at the other end of the pole piece cutting device away from the pole piece traction device 200.

[0091] The pole piece traction device 200 here is configured to transfer the pole piece to be cut to the pole piece cutting device, the pole piece cutting device is configured to cut the pole piece to be cut, and the pole piece conveying device 300 is configured to convey the pole piece after cutting.

[0092] The pole piece pulling device 200 comprises a first conveying roller and a second conveying roller, and the first conveying roller and the second conveying roller are arranged alternately up and down in the first direction, wherein the first conveying roller is arranged at the top and the second conveying roller is arranged at the bottom.

[0093] The first conveying roller and the second conveying roller are configured to cooperate with each other to roll the electrode pieces to be cut, and then convey the rolled electrode pieces to be cut to the adjustment platform 130 of the electrode piece cutting device.

[0094] In one embodiment, the pole piece pulling device 200 delivers pole pieces to be cut of a set length to the adjustment platform 130 each time. The set length can be set according to actual conditions.

[0095] The above-mentioned electrode sheet cutting device comprises an adjustment platform 130, and a cutting opening can be set on the adjustment platform 130. When conveying the electrode sheet to be cut, the electrode sheet pulling device 200 conveys the electrode sheet to be cut to the cutting opening.

[0096] Optionally, the pole piece conveying device 300 may be a conveyor belt, a conveyor, etc. The pole piece conveying device 300 may be selected according to actual conditions.

[0097] In one embodiment, an adsorption structure is provided on the electrode conveying device 300, and after the electrode is cut, it is adsorbed on the electrode conveying device through the adsorption structure. The electrode conveying device 300 transfers the cut electrode to a target position. The target position is the placement position, classification position, next processing platform, etc. of the cut electrode, and the target position can be selected according to actual conditions.

[0098] In the above implementation process, by providing a pole piece cutting device including an adjustment platform 130 in the pole piece cutting system, the cutting tool 110 in the pole piece cutting device can rotate along with the adjustment platform 130, thereby realizing the angle adjustment of the cutting tool 110. When cutting the pole piece, the cutting tool 110 is controlled to be parallel to the edge of the pole piece along the direction of movement of the pole piece. When the pole piece to be cut has abnormal conditions such as wavy lines, the cut pole piece can also be made into a relatively fixed shape, thereby improving the regularity of the shape of the cut pole piece.

[0099] In a possible implementation, the pole piece cutting system further includes: a detection device 400 .

[0100] The detection device 400 is arranged in a first direction and is located above the pole piece conveying device 300. The first direction is a direction perpendicular to the movement of the pole piece.

[0101] The detection device 400 here is configured to obtain detection information of the pole piece after cutting. For example, the detection device 400 can be an angle measuring instrument, a laser rangefinder, an image acquisition device, etc. The detection device 400 can be selected according to actual conditions.

[0102] Accordingly, the detection information is configured to determine the pole piece angle of the pole piece after cutting, and the pole piece angle is configured to adjust the angle of the cutting tool 110. The detection information can be an image of the pole piece after cutting, angle data, pole piece size data, etc. The detection information can be selected according to actual conditions.

[0103] Exemplarily, if the detection device 400 is an angle measuring instrument, the angle measuring instrument can obtain the pole piece angle of the pole piece through a measuring system.

[0104] If the detection device 400 is a laser rangefinder, the laser rangefinder can indirectly calculate the pole piece angle by measuring the distance from different points of the pole piece to a fixed point and using mathematical means such as trigonometric functions.

[0105] If the detection device 400 is an image acquisition device, the image acquisition device can obtain an image of the cut pole piece and extract the pole piece angle in the image by using image processing and analysis technology.

[0106] The selection of the detection device 400 and the determination of the pole piece angle are merely exemplary, and the selection of the detection device 400 and the determination of the pole piece angle may be adjusted according to actual conditions.

[0107] It should be understood that after obtaining the pole piece angle, the detection device 400 determines the angle at which the adjustment platform 130 needs to rotate according to the obtained pole piece angle. The power device drives the adjustment platform 130 to rotate according to the obtained angle at which the adjustment platform 130 needs to rotate.

[0108] In the above implementation process, a detection device 400 is set up, which is used to detect the actual pole piece angle of the pole piece after cutting, and control the rotation of the adjustment platform 130 according to the pole piece angle, that is, the position of the cutting tool 110 is reversely adjusted according to the actual situation after the pole piece is cut, so as to improve the accuracy of the rotation of the adjustment platform 130.

[0109] In a possible implementation, the detection device 400 is: an image acquisition device.

[0110] Among them, the image acquisition device is configured to acquire the pole piece image of the pole piece after cropping; the pole piece image is configured to determine the pole piece angle of the pole piece after cropping.

[0111] After acquiring the pole piece image of the cut pole piece, the image acquisition device here can calculate the difference between the pole piece angle of the cut pole piece and the set angle according to a certain number of pole piece images after acquiring a certain number of pole piece images (e.g., 5, 10, 20, etc.). The difference is used to determine the rotation angle of the adjustment platform 130.

[0112] The set angle is an ideal angle after the pole piece is cut, such as 90°, 60°, etc. The set angle can be selected according to actual conditions.

[0113] The difference between the above-mentioned pole piece angle and the set angle is the angle of deviation of the pole piece after cutting.

[0114] In one embodiment, the image acquisition device is an area array camera.

[0115] In another embodiment, the image acquisition device is two pole piece lengths away from the cutting opening. The pole piece length is the length of the pole piece after cutting along the pole piece transmission direction.

[0116] In the above implementation process, by setting the detection device 400 as an image acquisition device, the image acquisition device captures the image of the pole piece and determines the pole piece angle information through a camera and an image processing algorithm, and its accuracy is higher than that of ordinary sensors and other devices, which can improve the accuracy of determining the pole piece angle. In addition, since the image acquisition device processes the image, it can process pole pieces of various shapes and sizes, without frequently changing the measuring tool or adjusting the measuring parameters, which increases the flexibility of the detection device 400.

[0117] In a possible implementation, the pole piece cutting system further includes: a processing device.

[0118] The processing device is connected to the detection device 400 and the electrode cutting device.

[0119] The processing device here is configured to determine the pole piece angle based on the detection information.

[0120] Optionally, the processing device can be integrated inside the pole piece cutting device, or can be independently arranged outside the pole piece cutting device. The arrangement of the processing device can be selected according to actual conditions.

[0121] It should be understood that when the processing device is integrated inside the pole piece cutting device, the detection device 400 transmits the detection information to the processing device after acquiring the detection information. The processing device determines the pole piece angle according to the detection information and controls the rotation of the adjustment platform 130 based on the pole piece angle.

[0122] When the processing device is independently arranged outside the pole piece cutting device, the pole piece cutting device may also be provided with a signal transceiver, which is connected to the processing device, wherein the signal transceiver is used to receive the pole piece angle sent by the processing device.

[0123] The above-mentioned processing device can be a single chip microcomputer, a programmable controller, etc., and the processing device can be selected according to actual conditions.

[0124] In the above implementation process, a processing device is set in the pole piece cutting system. The processing device can be used to determine the pole piece angle according to the detection information obtained by the detection device 400, thereby realizing automatic adjustment of the pole piece cutting device in the pole piece cutting system, thereby reducing the work intensity of the staff and improving the adjustment accuracy of the pole piece cutting device.

[0125] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0126] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A pole piece cutting device, characterized in that: include: Cutting knives, traction mechanisms and adjustment platforms; One end of the traction mechanism is fixedly arranged on the adjustment platform; The other end of the traction mechanism is connected to the cutting tool, and the traction mechanism is configured to control the cutting tool to move in a first direction; wherein the first direction is a direction perpendicular to the movement of the pole piece; Wherein, the cutting tool is configured to rotate with the adjustment platform to adjust the relative position of the cutting tool and the pole piece.

2. The pole piece cutting device according to claim 1, characterized in that: The cutting tool comprises an upper tool and a lower tool; the traction mechanism comprises: a bracket and a connecting piece; One end of the bracket is fixedly arranged on the adjustment platform; The lower cutter is fixedly arranged on the adjustment platform; The upper cutter is connected to an end of the bracket away from the adjustment platform through the connecting piece; The upper cutter and the lower cutter are both arranged in the first direction, and the upper cutter is arranged above the lower cutter; Wherein, when the upper cutter falls, the upper cutter and the lower cutter are closed.

3. The pole piece cutting device according to claim 2, characterized in that: The connecting member comprises: a traction rope and a wheel; The wheel is fixedly arranged at one end of the bracket away from the adjustment platform; One end of the traction rope is connected to the wheel, and the other end of the traction rope is connected to an end of the upper cutter away from the lower cutter; Wherein, the upper cutter is configured to rise or fall under the traction of the traction rope.

4. The pole piece cutting device according to any one of claims 1 to 3, characterized in that: Also includes: Power plant; The power device is connected to the adjustment platform; Wherein, the adjustment platform is configured to rotate under the control of the power device.

5. The pole piece cutting device according to claim 4, characterized in that: The adjustment platform is a rotating platform; The rotating platform is connected to the power device and is configured to rotate under the control of the power device.

6. The pole piece cutting device according to claim 4, characterized in that: The adjustment platform comprises: a support plate and a deceleration device; The support plate is mounted on the speed reducer; The reduction device is connected to the power device; Wherein, the reduction device is configured to operate under the control of the power device, and the support plate is configured to rotate under the action of the reduction device.

7. A pole piece cutting system, characterized in that: include: A pole piece traction device, a pole piece conveying device and a pole piece cutting device as claimed in any one of claims 1 to 6; The pole piece traction device is arranged at one end of the pole piece cutting device; The pole piece conveying device is arranged at the other end of the pole piece cutting device away from the pole piece traction device; Wherein, the pole piece traction device is configured to transfer the pole piece to be cut to the pole piece cutting device, the pole piece cutting device is configured to cut the pole piece to be cut, and the pole piece conveying device is configured to convey the cut pole piece.

8. The system according to claim 7, characterized in that Also includes: Detection device; The detection device is arranged in a first direction and is located above the pole piece conveying device; the first direction is a direction perpendicular to the movement of the pole piece; Wherein, the detection device is configured to obtain detection information of the pole piece after cutting, the detection information is configured to determine the pole piece angle of the pole piece after cutting, and the pole piece angle is configured to adjust the cutting tool angle.

9. The system according to claim 8, characterized in that The detection device is: an image acquisition device; The image acquisition device is configured to acquire the pole piece image of the cropped pole piece; Wherein, the pole piece image is configured to determine the pole piece angle of the cropped pole piece.

10. The system according to claim 8, characterized in that Also includes: Processing device; The processing device is connected to the detection device and the pole piece cutting device; Wherein, the processing device is configured to determine the pole piece angle based on the detection information.

Images