Burr detection device, burr detection method, and electrode sheet production method

Abstract

A burr detection device (200), a burr detection method, and an electrode sheet production method. The burr detection device (200) comprises a device support (207) and first and second conveying lines (208, 209) arranged in sequence. The burr detection device (200) further comprises a first visual module, a rotating module (230), a second visual module, and a processing apparatus (201). A first edge (101) of an electrode sheet (100) is adapted to be arranged opposite to a first visual camera (220). The rotating module (230) is used for transferring from the first conveying line (208) to the second conveying line (209), the rotating module (230) comprises a rotating driving body and a rotating vacuum chuck (231), and the rotating driving body is in transmission connection with the rotating vacuum chuck (231) so as to enable the rotating vacuum chuck (231) to rotate. A second visual camera (240) is arranged opposite to the second conveying line (209), a second edge (102) of the electrode sheet (100) is adapted to be arranged opposite to the second visual camera (240), and a second light source (241) is used for emitting light towards the second conveying line (209). The burr detection device (200) is beneficial to improving the coordination efficiency of burr detection processes for side edges of the electrode sheet (100), and is beneficial to improving the overall detection speed for burrs on the side edges of the electrode sheet (100).

Description

Burr detection device, burr detection method and pole piece production method

[0001] The present application claims priority to the Chinese patent application No. 202411273209.5, filed on September 11, 2024, and entitled "Burr detection device, burr detection method and pole piece production method", the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of battery cell manufacturing, in particular to a burr detection device, a burr detection method and a pole piece production method. BACKGROUND

[0003] After the pole piece in the production process of lithium battery and sodium battery completes the processes such as coating and rolling, some technologies perform die cutting and other operations on the pole piece to facilitate subsequent processes such as lamination. For the pole piece obtained by die cutting, the burrs of each side need to meet certain quality requirements, such as the burr size being less than half the thickness of the diaphragm.

[0004] In related technologies, part of the pole pieces are extracted and detected for burrs by using a microscope and other devices, and the detection speed needs to be improved. TECHNICAL SOLUTION

[0005] The main purpose of the present application is to provide a burr detection device to improve the detection speed.

[0006] To achieve the above object, the burr detection equipment provided by the present application is used for detecting the burr of a pole piece, the pole piece comprising two oppositely arranged first edges and two oppositely arranged second edges; the burr detection equipment comprises an equipment support, a first conveying line and a second conveying line arranged in sequence, and further comprises a first vision module, a rotating module, a second vision module and a processing device; the first conveying line is provided with the first vision module on at least one side in the conveying direction, the first vision module comprises a first vision camera and a first light source, the first vision camera is arranged on the equipment support and is arranged opposite to the first conveying line; the first edge of the pole piece is arranged opposite to the first vision camera, and the first light source is used for emitting light in a direction towards the side of the first conveying line; the rotating module is in sliding connection with the equipment support, and is used for moving from the first conveying line to the second conveying line; the rotating module comprises a rotating drive body and a rotating suction disc, the rotating drive body is in transmission connection with the rotating suction disc to make the rotating suction disc rotate; the second conveying line is provided with the second vision module on at least one side in the conveying direction, the second vision module comprises a second vision camera and a second light source; the second vision camera is arranged on the equipment support and is arranged opposite to the second conveying line; the second edge of the pole piece is arranged opposite to the second vision camera, and the second light source is used for emitting light in a direction towards the side of the second conveying line; the signal input end of the processing device is electrically connected with the first vision camera and the second vision camera respectively, and the processing device is used for identifying the burr of the pole piece in the image.

[0007] In use of the burr detection equipment in the technical scheme of the present application, the pole piece can be conveyed by the first conveying line, and the first edge of the pole piece is directed to the side of the conveying direction, then the first lateral image of the first edge is acquired by the first vision camera; after rotation by the rotating module, the second edge of the pole piece is directed to the side of the conveying direction, then the second lateral image of the second edge is acquired by the second vision camera, and then the burr in the first lateral image and the burr in the second lateral image are identified by the processing device; the burr detection equipment is beneficial to improving the connection efficiency of the burr detection procedures of each side edge of the pole piece, and is beneficial to improving the overall detection speed of the burr of the side edge of the pole piece.

[0008] Optionally, the first vision camera and the first light source are arranged in a direction perpendicular to the conveying plane of the first conveying line.

[0009] At this time, the first vision camera and the first light source are arranged in a direction perpendicular to the conveying plane of the first conveying line, which is beneficial to improving the structural compactness of the burr detection equipment.

[0010] Optionally, in the direction perpendicular to the conveying plane of the first conveying line, the first light source is arranged on both sides of the first vision camera.

[0011] At this time, the first visual camera is provided with the first light source on both sides, which is conducive to reducing the ghosting on the first side, thereby further improving the imaging contrast or imaging definition of the first side.

[0012] Optionally, the first light source comprises a first linear light source, and a light row of the first linear light source is parallel to the conveying direction of the first conveying line.

[0013] At this time, the light row of the first linear light source is parallel to the conveying direction of the first conveying line, which improves the concentration degree of light, improves the utilization rate of light energy, and reduces the risk of light interference of the first linear light source on other equipment outside the light row.

[0014] Optionally, the second visual camera and the second light source are arranged in a direction perpendicular to the conveying plane of the second conveying line.

[0015] At this time, the second visual camera and the second light source are arranged in a direction perpendicular to the conveying plane of the second conveying line, which is conducive to improving the structural compactness of the burr detection device.

[0016] Optionally, in the direction perpendicular to the conveying plane of the second conveying line, the second visual camera is provided with the second light source on both sides.

[0017] At this time, the second visual camera is provided with the second light source on both sides, which is conducive to reducing the ghosting on the second side, thereby further improving the imaging contrast or imaging definition of the second side.

[0018] Optionally, the second light source comprises a second linear light source, and a light row of the second linear light source is parallel to the conveying direction of the second conveying line.

[0019] At this time, the light row of the second linear light source is parallel to the conveying direction of the second conveying line, which improves the concentration degree of light, improves the utilization rate of light energy, and reduces the risk of light interference of the second linear light source on other equipment outside the light row.

[0020] Optionally, the second visual camera and the second light source are arranged in a direction perpendicular to the conveying plane of the second conveying line; the second light source comprises a second linear light source, and a light row of the second linear light source is parallel to the conveying direction of the second conveying line; and the length of the light row of the first linear light source is less than the length of the light row of the second linear light source.

[0021] At this time, the burr detection device can detect the burr of the short side of the pole piece at the first linear light source first, and then detect the burr of the long side of the pole piece at the second linear light source. The first linear light source and the second linear light source can be made to correspond to the length of the short side and the long side of the pole piece respectively, which is beneficial to reduce the total length of the light source and reduce the loss of light energy.

[0022] Optionally, the burr detection device comprises two first visual modules arranged oppositely, and the two first visual modules are arranged on two sides of the conveying direction of the first conveying line respectively.

[0023] At this time, the two first visual modules arranged oppositely on two sides of the conveying direction of the first conveying line can improve the detection efficiency of the two first edges, thereby improving the overall detection efficiency of the burr detection device.

[0024] Optionally, the burr detection device comprises two second visual modules arranged oppositely, and the two second visual modules are arranged on two sides of the conveying direction of the second conveying line respectively.

[0025] At this time, the two second visual modules arranged oppositely on two sides of the conveying direction of the second conveying line can improve the detection efficiency of the two second edges, thereby improving the overall detection efficiency of the burr detection device.

[0026] Optionally, the rotating module comprises a connecting structure, the rotating suction disc is rotationally connected with the connecting structure, the connecting structure is slidingly connected with the device support, the connecting structure is configured to move from the first conveying line to the second conveying line, and the first conveying line is provided with the first visual module and the connecting structure on the same side in the conveying direction; along the width direction of the first conveying line, the connecting structure is arranged between the first conveying line and the first visual module on the same side.

[0027] At this time, the rotating suction disc can move from the first conveying line to the second conveying line through the connecting structure. In addition, along the width direction of the first conveying line, the connecting structure is arranged between the first conveying line and the first visual module on the same side, which is beneficial to reduce the risk of collision between the rotating suction disc and the connecting structure and the first visual camera and the first light source of the first visual module in the moving process, and improve the structural compactness of the burr detection device.

[0028] Optionally, the burr detection device further comprises a first positioning camera and a first driving body, the first positioning camera and the first visual camera are arranged along a direction surrounding the first conveying line; the first positioning camera is arranged opposite to a conveying plane of the first conveying line, and the first positioning camera is connected with the device support; the first visual camera is movably connected with the device support, and the first visual camera is used to move along a direction parallel to the conveying plane of the first conveying line; the first driving body is in transmission connection with the first visual camera, so as to move the first visual camera relative to the device support; a signal input end of the processing device is electrically connected with the first positioning camera, and a signal output end of the processing device is electrically connected with the first driving body; the first positioning camera is used to acquire a first profile of the first edge of the pole piece, and the processing device is used to drive the first driving body according to the first profile of the first edge, so as to drive the first driving body to move the first visual camera relative to the pole piece along a direction parallel to the first profile of the first edge.

[0029] At this time, the burr detection device can acquire the first profile of the first edge in the thickness direction of the pole piece through the first positioning camera, and then drive the first driving body to move the first visual camera along a direction parallel to the first profile according to the first profile, so as to reduce the distance change between the first visual camera and the first edge, improve the focusing accuracy of the first visual camera to the first edge, and facilitate to improve the burr detection accuracy of the first edge.

[0030] Optionally, a first longitudinal guide rail is arranged on the device support, the first longitudinal guide rail extends along a direction perpendicular to the conveying plane of the first conveying line, and the first positioning camera is movably connected with the first longitudinal guide rail along the extension direction of the first longitudinal guide rail; the burr detection device further comprises a first locking structure, the first locking structure is connected with the first positioning camera and the first longitudinal guide rail respectively, and the first locking structure is used to limit the movement between the first positioning camera and the first longitudinal guide rail.

[0031] At this time, the burr detection device can adjust the distance from the first positioning camera to the first conveying line through the first longitudinal guide rail, and keep the first positioning camera stable in position through the first locking structure, which is conducive to improving the focusing accuracy of the first positioning camera and improving the positioning accuracy.

[0032] Optionally, the burr detection device further comprises a second positioning camera and a second driving body, the second positioning camera and the second visual camera are arranged along a direction surrounding the second conveying line; the second positioning camera is arranged opposite to a conveying plane of the second conveying line, and the second positioning camera is connected with the device support; the second visual camera is movably connected with the device support, and the second visual camera is used to move along a direction parallel to the conveying plane of the second conveying line; the second driving body is in transmission connection with the second visual camera, so as to move the second visual camera relative to the device support; the signal input end of the processing device is electrically connected with the second positioning camera, and the signal output end of the processing device is electrically connected with the second driving body; the second positioning camera is used to acquire a second profile of the second edge of the pole piece, and the processing device is used to drive the second driving body according to the second profile of the second edge, so as to drive the second driving body to move the second visual camera relative to the pole piece along a direction parallel to the second profile of the second edge.

[0033] At this time, the burr detection device can acquire the second profile of the second edge in the thickness direction of the pole piece through the second positioning camera, and drive the second driving body to move the second visual camera along the direction parallel to the second profile according to the second profile, so as to reduce the distance change between the second visual camera and the second edge, improve the focusing accuracy of the second visual camera to the second edge, and facilitate to improve the burr detection accuracy of the second edge.

[0034] Optionally, the device support is provided with a second longitudinal guide rail, the second longitudinal guide rail is arranged to extend in a direction perpendicular to the conveying plane of the second conveying line, and the second positioning camera is movably connected with the second longitudinal guide rail along the extension direction of the second longitudinal guide rail; the burr detection device further comprises a second locking structure, the second locking structure is connected with the second positioning camera and the second longitudinal guide rail respectively, and the second locking structure is used to limit the movement between the second positioning camera and the second longitudinal guide rail.

[0035] At this time, the burr detection device can adjust the distance between the second positioning camera and the second conveying line through the second longitudinal guide rail, and keep the second positioning camera stable in position through the second locking structure, so as to improve the focusing accuracy of the second positioning camera and improve the positioning accuracy.

[0036] Optionally, the burr detection device further comprises a carrier and a third vision module, the third vision module comprising a third vision camera and a third light source; the first conveying line, the carrier and the second conveying line are sequentially arranged; along the arrangement direction of the first conveying line, the carrier and the second conveying line, the third vision module is arranged between the first vision camera and the second vision module; the third vision camera is connected with the device support, and the third vision camera is oppositely arranged with the carrier; the third vision camera is used for acquiring a profile edge image of the pole piece in the thickness direction of the pole piece; the third vision camera is electrically connected with the signal input end of the processing device, and the processing device is used for identifying the burr in the profile edge image.

[0037] The side edge burr of the pole piece usually extends in a direction parallel to the side plane of the pole piece, but due to the cutting device of the side edge and other reasons, the burr may also extend in a direction intersecting the side plane. At this time, the burr detection device can acquire the profile edge image of the pole piece in the thickness direction of the pole piece through the third vision camera, thereby improving the success rate of identifying the burr in the thickness direction of the pole piece and reducing the adverse effects of the burr on the subsequent battery assembly process.

[0038] Optionally, the third vision camera is oppositely arranged with the bearing plane of the carrier; the third light source is arranged on the side of the carrier away from the third vision camera, and the third light source is used for emitting light in the direction towards the third vision camera.

[0039] At this time, the third light source is arranged on the side of the carrier away from the third vision camera, and the third light source emits light in the direction towards the third vision camera, which is conducive to further improving the success rate of identifying the burr in the thickness direction of the pole piece.

[0040] Optionally, a third longitudinal guide rail is arranged on the device support, and the third longitudinal guide rail extends in a direction perpendicular to the bearing plane of the carrier; the third vision camera is movably connected with the third longitudinal guide rail in the extension direction of the third longitudinal guide rail; the burr detection device further comprises a third locking structure, the third locking structure being connected with the third vision camera and the third longitudinal guide rail respectively, and the third locking structure being used for limiting the movement between the third vision camera and the third longitudinal guide rail.

[0041] At this time, the burr detection device can adjust the distance between the third vision camera and the carrier through the third longitudinal guide rail, and keep the third vision camera stable in position through the third locking structure, which is conducive to improving the focusing accuracy of the third vision camera, thereby further improving the success rate of identifying the burr in the thickness direction of the pole piece.

[0042] Optionally, the length of the first side is less than the length of the second side; a signal output end of the processing device is electrically connected with the rotating driving body, and the processing device is configured to drive the rotating driving body to rotate the pole piece after the third visual camera acquires the profile edge image; the burr detection device comprises two third visual modules, and the two third visual cameras are arranged in parallel to the width direction of the first conveying line and partially overlap in a shooting area on the pole piece.

[0043] At this time, the burr detection device can first detect the burr of the first side with a smaller length, and can improve the success rate of identifying the burr in the thickness direction of the pole piece by arranging the two third visual cameras in parallel to the width direction of the first conveying line and partially overlapping in the shooting area, thereby improving the connection efficiency of each burr detection process of the pole piece; at the same time, the burr detection device also reduces the shooting range requirement of the third visual camera, thereby reducing the equipment cost of the third visual camera.

[0044] Optionally, the burr detection device further comprises a feeding bracket, a controllable force applying member, and a height detection device; a power output end of the controllable force applying member is connected with the feeding bracket, and the feeding bracket is configured to support the stacked pole pieces; the height detection device is configured to detect the height information of the pole piece at the top, and the height detection device is electrically connected with a signal input end of the processing device; a signal output end of the processing device is electrically connected with a controllable end of the controllable force applying member, and the processing device is configured to drive the feeding bracket to rise according to the height information and a preset corresponding relationship.

[0045] At this time, the feeding bracket can buffer the pole pieces to be detected by supporting the stacked pole pieces, thereby reducing the waiting time of the burr detection device for the arrival of the pole pieces. In addition, the processing device drives the feeding bracket to rise according to the height information and the preset corresponding relationship, so that the height of the pole piece at the top is kept in a relatively stable range, thereby reducing the difficulty of transferring the pole piece to the first conveying line and improving the overall efficiency of conveying the pole piece for detection.

[0046] Optionally, the burr detection device further comprises a feeding suction cup, a first transverse guide rail, and a first moving device; the first transverse guide rail is arranged on the first conveying line in a transverse direction to the conveying direction of the first conveying line; and the first moving device is connected with the first transverse guide rail and the feeding suction cup respectively, and the feeding suction cup is configured to suck the pole piece on both sides of the conveying direction of the first conveying line.

[0047] At this time, the first transverse guide rail is arranged transversely on the first conveying line, and the loading suction plate sucks the pole piece on both sides of the conveying direction of the first conveying line, so that the loading efficiency of the pole piece transferred to the first conveying line is improved, the waiting time of the burr detection equipment for the pole piece is reduced, and the overall detection efficiency of the pole piece is improved. At the same time, the first transverse guide rail is arranged transversely, and the loading suction plate sucks the pole piece on both sides of the conveying direction of the first conveying line, so that the space utilization of the burr detection equipment is further improved.

[0048] Optionally, the burr detection equipment comprises a loading module, the loading module comprises the loading bracket, the controllable force applying piece and the height detection device; two loading modules are arranged on both sides of the conveying direction of the first conveying line respectively, and the two loading modules are arranged correspondingly at both ends of the first transverse guide rail. The loading suction plate is used for sucking the pole piece from the two loading modules.

[0049] At this time, two loading modules are arranged on both sides of the conveying direction of the first conveying line respectively, so that the total amount of buffer of the burr detection equipment for the pole piece is improved, the waiting time of the burr detection equipment for the pole piece is further reduced, and the overall detection efficiency of the pole piece is further improved.

[0050] Optionally, the burr detection equipment further comprises a loading suction plate, a second transverse guide rail, a second moving device, a first unloading bracket and a second unloading bracket. The second transverse guide rail is arranged transversely on the second conveying line. The second moving device is connected to the second transverse guide rail and the loading suction plate respectively. The loading suction plate is used for sucking the pole piece on the second conveying line. The second moving device is electrically connected to the signal output end of the processing device. The second moving device is used for placing the pole piece in the first unloading bracket or the second unloading bracket according to at least one of the image obtained by the first vision module, the image obtained by the second vision module and the contour edge graph.

[0051] At this time, the burr detection equipment can place the pole pieces with different burr identification results into the first unloading bracket and the second unloading bracket according to the image obtained by the first vision module, the image obtained by the second vision module and the contour edge graph, through the loading suction plate, the second transverse guide rail and the second moving device, so as to realize the classification of the pole pieces with different burr identification results, and reduce the risk of subsequent mixing of the pole pieces with different burr identification results. In addition, the second transverse guide rail is arranged transversely on the second conveying line, so as to effectively improve the space utilization of the burr detection equipment.

[0052] Optionally, the second discharging bracket is arranged opposite to the end of the second conveying line, the second discharging bracket is arranged downstream of the conveying direction of the second conveying line, and the first discharging bracket is arranged on the side of the conveying direction of the second conveying line; at least part of the first discharging bracket is arranged upstream of the second discharging bracket along the conveying direction of the second conveying line; the two ends of the second transverse guide rail are respectively provided with support columns, and an extension guide rail is arranged between the second transverse guide rail and the support columns; the extension guide rail is arranged in extension along the conveying direction of the second conveying line; the second transverse guide rail and the extension guide rail are in sliding connection in the conveying direction of the second conveying line; the controllable end of the third moving device is electrically connected with the signal output end of the processing device.

[0053] At this time, the second discharging bracket is arranged opposite to the end of the second conveying line and is arranged downstream of the conveying direction of the second conveying line, and the first discharging bracket is arranged on the side of the conveying direction of the second conveying line; at least part of the first discharging bracket is arranged upstream of the second discharging bracket along the conveying direction of the second conveying line, thereby improving the space utilization of the burr detection device.

[0054] In addition, the controllable end of the third moving device is electrically connected with the signal output end of the processing device, thereby facilitating the placement of the pole piece on the first discharging bracket or the second discharging bracket according to the burr detection result, and improving the automation degree of the burr detection device.

[0055] The application further provides a burr detection method applied to the burr detection device, and the burr detection method comprises the following steps:

[0056] Conveying the pole piece and making the first edge of the pole piece face the side of the conveying direction;

[0057] Obtaining a first lateral view of the first edge;

[0058] Rotating the pole piece to change the first edge of the pole piece from facing the side of the conveying direction to the second edge of the pole piece facing the side of the conveying direction;

[0059] Obtaining a second lateral view of the second edge;

[0060] Identifying the burrs in the first lateral view and the burrs in the second lateral view.

[0061] The burr detection method in the technical solution of the application can convey the pole piece and make the first edge of the pole piece face the side of the conveying direction, and then acquire the first side view of the first edge; after rotation, the second edge of the pole piece faces the side of the conveying direction, and then the second side view of the second edge is acquired, and the burrs in the first side view and the second side view are recognized; the burr detection method is beneficial to improving the connection efficiency of the burr detection process of each side edge of the pole piece, and is beneficial to improving the overall detection speed of the side edge burr of the pole piece.

[0062] Optionally, before the step of rotating the pole piece, the burr detection method further comprises the following steps:

[0063] acquiring a first profile of the first edge in the thickness direction of the pole piece;

[0064] The step of acquiring the first side view of the first edge comprises: moving the first vision camera in a direction parallel to the first profile to acquire the first side view of the first edge according to the first profile.

[0065] At this time, the burr detection method can acquire the first profile of the first edge in the thickness direction of the pole piece, and then move the first vision camera in a direction parallel to the first profile according to the first profile, so as to reduce the distance change between the first vision camera and the first edge, improve the focusing accuracy of the first vision camera to the first edge, and improve the burr detection accuracy of the first edge.

[0066] Optionally, before the step of rotating the pole piece, the burr detection method further comprises the following steps:

[0067] acquiring a second profile of the second edge in the thickness direction of the pole piece;

[0068] The step of acquiring the second side view of the second edge comprises: moving the second vision camera in a direction parallel to the second profile to acquire the second side view of the second edge according to the second profile.

[0069] At this time, the burr detection method can acquire the second profile of the second edge in the thickness direction of the pole piece, and then move the second vision camera in a direction parallel to the second profile according to the second profile, so as to reduce the distance change between the second vision camera and the second edge, improve the focusing accuracy of the second vision camera to the second edge, and improve the burr detection accuracy of the second edge.

[0070] Optionally, after the step of acquiring the first side view of the first edge, before the step of acquiring the second side view of the second edge, the burr detection method further comprises the following steps:

[0071] acquiring a profile edge view of the pole piece in the thickness direction of the pole piece;

[0072] identify the burrs in the profile edge map.

[0073] At this time, the burr detection method can obtain the profile edge map of the pole piece in the thickness direction of the pole piece, improve the success rate of identifying the burrs in the thickness direction of the pole piece, and reduce the adverse effects of the burrs on the subsequent battery cell assembly process.

[0074] Optionally, before the step of obtaining the first lateral map of the first edge, the burr detection method further comprises the following steps:

[0075] stack the pole pieces on the loading bracket;

[0076] detect the height information of the pole piece located at the top;

[0077] According to the height information and the preset correspondence, the loading bracket is raised.

[0078] At this time, the burr detection method can buffer the pole pieces to be detected by supporting the stacked pole pieces on the loading bracket, thereby reducing the waiting time of the burr detection method for the arrival of the pole pieces. In addition, according to the height information and the preset correspondence, the loading bracket is raised, so that the height of the pole piece at the top is maintained within a relatively stable range, thereby reducing the difficulty of transferring the pole piece to the first conveying line and improving the overall efficiency of conveying the pole piece for detection.

[0079] Optionally, before the step of obtaining the first lateral map of the first edge, the burr detection method further comprises the following steps:

[0080] The loading bracket is arranged on both sides of the conveying direction of the pole piece;

[0081] The pole piece is conveyed away from the loading bracket on both sides of the conveying direction of the pole piece, respectively.

[0082] At this time, the pole piece is conveyed away from the loading bracket on both sides of the conveying direction of the pole piece, respectively, which can improve the loading efficiency of transferring the pole piece to the first conveying line, thereby reducing the waiting time of the burr detection method for the pole piece and improving the overall detection efficiency of the pole piece.

[0083] Optionally, the step of conveying the pole piece away from the loading bracket on both sides of the conveying direction of the pole piece, respectively, comprises:

[0084] After conveying a preset number of pole pieces away from the loading bracket on one side of the conveying direction of the pole piece, the pole piece is conveyed away from another loading bracket on the other side of the conveying direction of the pole piece, and the preset number is greater than or equal to 2.

[0085] At this time, the burr detection method can continuously convey more pole pieces on the same side of the conveying direction of the pole pieces, reduce the number of switching back and forth on both sides of the conveying direction, reduce the waiting time of the subsequent detection process for loading the pole pieces, and is beneficial to improve the overall detection efficiency of the pole pieces.

[0086] Optionally, the step of acquiring the profile edge map of the pole piece in the thickness direction of the pole piece is arranged before the step of rotating the pole piece.

[0087] At this time, the burr detection method can first detect the burr of the first edge with smaller length, and improve the success rate of identifying the burr in the thickness direction of the pole piece by arranging two third visual cameras in a direction parallel to the second edge with larger length and partially overlapping the shooting area before rotating the pole piece, thereby improving the connection efficiency of each burr detection process of the pole piece.

[0088] Optionally, the burr detection method further comprises the following steps:

[0089] According to at least one of the burr identification results of the first lateral view, the burr identification results of the second lateral view, and the burr identification results of the profile edge map, the pole piece is placed on the first unloading bracket or the second unloading bracket.

[0090] At this time, the burr detection method can place the pole pieces with different burr identification results into the first unloading bracket and the second unloading bracket, realize the classification of the pole pieces with different burr identification results, and reduce the risk of subsequent mixing of the pole pieces with different burr identification results.

[0091] The application also proposes a pole piece production method, which comprises the following steps:

[0092] Slitting to form a pole piece;

[0093] For at least a part of the number of pole pieces, the pole pieces are conveyed and the first edge of the pole pieces is directed to the side of the conveying direction;

[0094] Acquiring a first lateral view of the first edge;

[0095] Rotating the pole piece to change the pole piece from the first edge directed to the side of the conveying direction to the second edge of the pole piece directed to the side of the conveying direction;

[0096] Acquiring a second lateral view of the second edge;

[0097] Identifying the burrs in the first lateral view and the burrs in the second lateral view.

[0098] The pole piece production method in the technical scheme of the application can convey the pole piece and make the first edge of the pole piece face the side of the conveying direction, then acquire the first side view of the first edge, after rotation, the second edge of the pole piece faces the side of the conveying direction, then acquire the second side view of the second edge, and then identify the burrs in the first side view and the burrs in the second side view.

[0099] The above description is only a summary of the technical scheme of the application. In order to more clearly understand the technical means of the application, the application can be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the application more obvious and easy to understand, the following specific embodiments of the application are described. BRIEF DESCRIPTION OF DRAWINGS

[0100] In order to more clearly illustrate the technical scheme in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and those skilled in the art can obtain other drawings according to the structures shown in these drawings without creative labor.

[0101] Fig. 1 is a three-dimensional schematic view of a pole piece corresponding to an embodiment of the burr detection device provided by the application;

[0102] Fig. 2 is a top view of an embodiment of the burr detection device provided by the application;

[0103] Fig. 3 is a three-dimensional schematic view of an embodiment of the burr detection device provided by the application;

[0104] Fig. 4 is a partial enlarged view of A in Fig. 3;

[0105] Fig. 5 is a partial enlarged view of B in Fig. 3;

[0106] Fig. 6 is a partial schematic view of an embodiment of the burr detection device provided by the application;

[0107] Fig. 7 is a partial enlarged view of C in Fig. 3;

[0108] Fig. 8 is a partial enlarged view of D in Fig. 3;

[0109] Fig. 9 is a partial enlarged view of E in Fig. 3;

[0110] Fig. 10 is another partial schematic view of an embodiment of the burr detection device provided by the application;

[0111] Fig. 11 is a schematic diagram of hardware connection of an embodiment of the burr detection device provided in the present application;

[0112] Fig. 12 is a schematic diagram of steps of an embodiment of the burr detection method provided in the present application.

[0113] BRIEF DESCRIPTION OF THE DRAWINGS: 100, pole piece; 101, first edge; 102, second edge; 103, tab; 200, burr detection device; 201, processing device; 202, upper computer; 203, lower computer; 204, controllable force applying member; 205, height detection device; 206, first moving device; 207, device support; 208, first conveying line; 209, second conveying line; 210, carrier; 211, first detection station; 212, second detection station; 213, third detection station; 214, conveying belt; 215, first through hole; 216, plate body; 217, groove; 218, second through hole; 220, first visual camera; 221, first light source; 230, rotating module; 231, rotating chuck; 232, connection structure; 240, second visual camera; 241, second light source; 250, first positioning camera; 251, first longitudinal guide rail; 252, first locking structure; 260, second positioning camera; 261, second longitudinal guide rail; 262, second locking structure; 270, third visual camera; 271, third longitudinal guide rail; 272, third locking structure; 280, feeding module; 281, feeding bracket; 282, feeding chuck; 283, first transverse guide rail; 284, discharging chuck; 285, second transverse guide rail; 286, first discharging bracket; 287, second discharging bracket; 288, column; 289, inclined surface; 291, first sliding base; 292, second sliding base; 293, third sliding base; 294, fourth sliding base; 295, fifth sliding base; 296, extension guide rail.

[0114] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings.

[0115] Embodiments of the present application

[0116] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0117] It should be noted that if the application embodiments involve directionality indications (such as up, down, left, right, front, back, etc.), the directionality indications are only used to explain the relative position relationship, movement, etc. between the components in a certain posture, and if the certain posture changes, the directionality indications will also change accordingly.

[0118] In addition, if the application embodiments involve descriptions such as "first", "second", etc., the "first", "second", etc. descriptions are only for description purposes and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel schemes include "A and / or B", which includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection claimed in the present application.

[0119] After the coating and rolling processes of the lithium battery and sodium battery production process are completed, some technologies will cut the pole piece for subsequent stacking process.

[0120] Among them, Fig. 1 shows a three-dimensional schematic diagram of the pole piece corresponding to an embodiment of the burr detection device provided by the application. Among them, the pole piece 100 includes two oppositely arranged first edges 101 and two oppositely arranged second edges 102; the pole piece 100 is usually arranged as a whole in a rectangular shape, and the first edge 101 and the second edge 102 can be arranged adjacent to each other. Specifically, the pole piece 100 can be arranged to include two oppositely arranged first edges 101 and two oppositely arranged second edges 102, the first first edge 101, the first second edge 102, the second first edge 101 and the second side edge 102 are arranged in sequence; wherein the first edge 101 and the second edge 102 can be indirectly connected by a rounded corner, and of course the first edge 101 and the second edge 102 can also be directly connected. Among them, the length of the first edge 101 can be arranged to be less than the length of the second edge 102, and one of the first edges 101 is provided with a tab 103; it can be understood that the pole piece 100 can be arranged as a whole in a rectangular shape, and one of the short edges of the pole piece 100 is provided with a tab 103.

[0121] It can be understood that in other embodiments, the pole piece 100 can also be arranged in other shapes, for example, arranged as a whole in a parallelogram, etc., and the present embodiment does not limit this.

[0122] The pole piece 100 can be used for a lithium battery. For the laminated structure of the pole piece 100 of the lithium battery, the pole piece 100 can include a current collector (usually the positive current collector is an aluminum foil or a composite foil containing an aluminum layer, and the negative current collector is a copper foil or a composite foil containing a copper layer) and an active material layer coated on the current collector. The positive active material thereof includes lithium iron phosphate, lithium nickel cobalt manganese acid, and lithium nickel cobalt aluminum acid, etc., and the negative active material thereof includes graphite or carbon with a graphite-like structure, etc. Of course, the pole piece 100 can also be used for a sodium battery. Correspondingly, the positive active material thereof includes sodium ferrite, sodium manganate, etc., and the negative material thereof includes carbon-based materials, alloy-like materials, etc.

[0123] When the current collector is cut to form a single pole piece 100, the side edges of the formed pole piece 100 will form burrs due to the cutting of the aluminum foil layer or the copper foil layer therein. Therefore, before the pole piece 100 performs subsequent cell assembly processes, burr detection needs to be performed to avoid adverse effects caused by burrs. For the pole piece 100 obtained by die cutting, the burrs of each side edge need to meet certain quality requirements, such as the burr size being less than half the thickness of the diaphragm, etc. The related art usually extracts part of the pole pieces and uses a microscope or other equipment to detect burrs, and the detection speed needs to be improved.

[0124] Therefore, based on the above considerations, in order to improve the detection speed, the present application provides a burr detection device. When the burr detection device is used, a first lateral view of a first edge of the pole piece can be obtained first, and then a second lateral view of a second edge adjacent to the pole piece is obtained, and then the burrs in the first lateral view and the burrs in the second lateral view are identified.

[0125] Next, the structure of the burr detection device 200 proposed in the present application is explained in the specific implementation. In an embodiment of the present application, referring to FIGS. 2 and 3, the burr detection device 200 is used for detecting the burr of the pole piece 100, and the burr detection device 200 includes a device support 207 and a first conveying line 208 and a second conveying line 209 arranged in sequence, and further includes a first vision module, a rotating module 230, a second vision module 240 and a processing device 201 (which can be referred to FIG. 11); the first conveying line 208 is provided with the first vision module at at least one side in the conveying direction, the first vision module includes a first vision camera 220 and a first light source 221, the first vision camera 220 is arranged on the device support 207 and is arranged opposite to the first conveying line 208; wherein the first side 101 of the pole piece 100 is arranged opposite to the first vision camera 220, and the first light source 221 is used for emitting light in the direction of the side of the first conveying line 208; the rotating module 230 is slidingly connected with the device support 207, and the rotating module 230 is used for moving from the first conveying line 208 to the second conveying line 209; the rotating module 230 includes a rotating driving body and a rotating suction disc 231, the rotating driving body is drivingly connected with the rotating suction disc 231 to rotate the rotating suction disc 231; the second conveying line 209 is provided with the second vision module 240 at at least one side in the conveying direction, the second vision module includes a second vision camera 240 and a second light source 241; the second vision camera is arranged on the device support 207 and is arranged opposite to the second conveying line 209; wherein the second side 102 of the pole piece 100 is arranged opposite to the second vision camera, and the second light source 241 is used for emitting light in the direction of the side of the second conveying line 209; the signal input end of the processing device 201 is electrically connected with the first vision camera 220 and the second vision camera respectively, and the processing device 201 is used for identifying the burr of the pole piece 100 in the image.

[0126] The first conveying line 208 and the second conveying line 209 can be provided with driving rollers and driven rollers respectively, and a conveying belt or a transmission net provided on the driving rollers and the driven rollers. It can be understood that the conveying belt moves on the driving rollers and the driven rollers under the driving of the driving rollers, so as to convey the pole piece 100. The first conveying line 208 and the second conveying line 209 arranged in sequence can be arranged in contact with each other and connected with each other, and can be understood as being arranged as a whole. Of course, the first conveying line 208 and the second conveying line 209 arranged in sequence can be arranged at intervals. In addition, referring to FIG. 2 or FIG. 3, the burr detection device 200 can further include a carrier 210 located between the first conveying line 208 and the second conveying line 209 arranged at intervals. The first conveying line 208, the carrier 210 and the second conveying line 209 can be arranged integrally, and at this time, the carrier 210 can be understood as part of the whole conveying line. Of course, the first conveying line 208, the carrier 210 and the second conveying line 209 can also be arranged separately, and the carrier 210 can be arranged as a separate platform structure. At this time, the first conveying line 208 can form a first detection station 211, so as to be used for detecting the burrs on the relatively shorter first edge 101 of the pole piece 100 by means of lateral shooting. The second conveying line 209 can form a second detection station 212, so as to be used for detecting the burrs on the relatively longer second edge 102 of the pole piece 100 by means of lateral shooting. The carrier 210 in the interval of the conveying lines can form a third detection station 213, so as to detect the burrs on the first edge 101 and the second edge 102 of the pole piece 100 by means of downward shooting. The conveying directions of the first conveying line 208 and the second conveying line 209 can be shown by the dashed arrows in FIG. 2 and FIG. 3, and the conveying directions of the first conveying line 208 and the second conveying line 209 in FIG. 2 and FIG. 3 are parallel to the X-axis direction. It can be understood that the pole piece 100 can be arranged to be conveyed in the direction of the dashed arrows in FIG. 2 and FIG. 3, and the pole piece 100 can be arranged to be conveyed in the X-axis direction in FIG. 2 and FIG. 3.

[0127] The first visual camera 220 and the second visual camera 240 can be respectively arranged as an area array camera or a line array camera. The area array camera sensor arranges the pixels in a matrix, and directly outputs an image after row exposure or frame exposure. The line array camera sensor usually has only one row (or two to three rows) of pixels, and works in a manner similar to a scanner, and performs cyclic exposure on the row of pixels. When the first visual camera 220 and the second visual camera 240 are arranged as line array cameras, the burr detection device 200 can be equipped with a motion mechanism for uniform motion of the first visual camera 220 and the second visual camera 240. The shooting range of the first visual camera 220 and the shooting range of the second visual camera 240 can respectively cover the first side 101 and the second side 102. The shooting range of the first visual camera 220 and the shooting range of the second visual camera 240 can also be respectively smaller than the length of the first side 101 and the length of the second side 102. In this case, the continuous shooting and imaging of the first side 101 and the second side 102 can be respectively realized by moving the first visual camera 220 and the second visual camera 240. When the first visual camera 220 and the second visual camera 240 are shooting, the first conveying line 208 and the second conveying line 209 can stop conveying. Of course, the first conveying line 208 and the second conveying line 209 can also continue to convey. In this case, the first visual camera 220 and the second visual camera 240 move at the same speed and remain relatively stationary with respect to the pole piece 100. In addition, when the first visual camera 220 and the second visual camera 240 are arranged as line scanning cameras, the first conveying line 208 and the second conveying line 209 can also continue to convey, and the first visual camera 220 and the second visual camera 240 are stationary or move at a relatively slower speed or at a relatively faster speed and continuously image by line scanning. The present embodiment does not limit this.

[0128] It can be understood that, in order to enable the first visual detection camera 220 and the second visual camera 240 to successfully acquire the image of the side of the pole piece 100, the light of the first light source 221 and the second light source 241 is arranged to irradiate the corresponding side of the pole piece 100, thereby facilitating improvement of the image contrast or image definition of the acquired image. The rotating module 230 can be understood as a module capable of converting the positions of the first side 101 and the second side 102. The rotating module 230 is in sliding connection with the device support 207, and is used to move from the first conveying line 208 to the second conveying line 209, thereby enabling the pole piece on the first conveying line 208 to be conveyed onto the second conveying line 209. The pole piece 100 placed on the first conveying line 208 can be changed from the first side 101 to the second side 102 on the side of the conveying direction by the rotation of the rotating chuck 231 after being adsorbed by the rotating chuck 231. The rotating drive body can be arranged as a motor, a cylinder and necessary transmission structure capable of providing torque.

[0129] In some embodiments, referring to FIG. 2 or FIG. 3, the rotating module 230 includes a connecting structure 232, the rotating chuck 231 is rotationally connected with the connecting structure 232, the connecting structure 232 is slidingly connected with the equipment support 207, and the connecting structure 232 is configured to move from the first conveying line 208 to the second conveying line 209, so that the rotating chuck 231 can realize the movement from the first conveying line 209 to the second conveying line 209 through the connecting structure 232; wherein the connecting structure 232 can be provided as a connecting bracket, a connecting block or the like, and the sliding connection between the connecting structure 232 and the equipment support 207 can be realized through a guide rail structure extending from the first conveying line 208 to the second conveying line 209. The first visual module and the connecting structure 232 are provided on the same side of the first conveying line 208 in the conveying direction, and the connecting structure 232 is arranged between the first conveying line 208 and the first visual module on the same side in the width direction of the first conveying line 208 (for example, in the Y-axis direction in FIG. 2), which is conducive to reducing the risk of the rotating chuck 231 and the connecting structure 232 colliding with the first visual camera 240 and the first light source 241 of the first visual module in the movement, and improving the structural compactness of the burr detection equipment 200.

[0130] In addition, with reference to FIG. 11, the processing device 201 can be configured to include a host computer 202 and a slave device 203, wherein the host computer 202 can be understood as a computer system with strong computing and data processing capabilities, and the host computer 202 can be configured to be responsible for monitoring, issuing instructions, data acquisition, processing analysis, and user interaction of the entire control system. The host computer 202 can be configured to process complex algorithms, store long-term data, provide a graphical interface for user operation, etc. The host computer 202 includes but is not limited to a personal computer, an industrial computer, or a server, etc. The slave device 203 can be generally configured as a device or a controller connected directly with sensors, actuators and other hardware in the control system. The slave device 203 can be configured to be responsible for executing specific control instructions issued by the host computer 202, such as output of switching signals, adjustment of analog quantities, acquisition of data, etc. The slave device 203 usually performs simple logic judgment and real-time control tasks, and the hardware of the slave device 203 usually includes a microcontroller, a programmable logic controller (PLC), an embedded control board, etc. The processing device 201 can use existing image recognition technology to recognize the burrs in the first side view and the burrs in the second side view, and specifically, the host computer 202 can be used to recognize the burrs in the first side view and the burrs in the second side view. The processing device 201 (specifically, the host computer 202) can also form a recognition model for recognizing the burrs in the first side view and the burrs in the second side view through model training.

[0131] In use, the burr detection device 200 in the technical solution of the present application can convey the pole piece 100 through the first conveying line 208 and make the first edge 101 of the pole piece 100 face the side of the conveying direction, then acquire the first side view of the first edge 101 through the first vision camera 220; after rotation through the rotation module 230, the second edge 102 of the pole piece 100 faces the side of the conveying direction, then acquire the second side view of the second edge 102 through the second vision camera 240, and finally recognize the burrs in the first side view and the burrs in the second side view through the processing device 201. The burr detection device 200 is beneficial to improving the connection efficiency of the burr detection process of each side edge of the pole piece 100, and is beneficial to improving the overall detection speed of the side edge burrs of the pole piece 100.

[0132] In some embodiments, the first vision camera 220 and the first light source 221 are arranged in a direction perpendicular to the conveying plane of the first conveying line 208, for example, the first vision camera 220 and the first light source 221 are arranged in the Z-axis direction in FIG. 3, thereby being beneficial to improving the structural compactness of the burr detection device.

[0133] The first light source 221 and the first visual camera 220 can be arranged on the same side of the pole piece 100, thereby reducing the risk of the first light source 221 interfering with the first visual camera 220, and improving the imaging contrast or imaging clarity of the first edge 101. In addition, the first light source 221 is arranged on both sides of the first visual camera 220 in a direction perpendicular to the conveying plane of the first conveying line 208, thereby reducing ghosting on the first edge 101 and further improving the imaging contrast or imaging clarity of the first edge 101. The first light source 221 includes a first linear light source, and the light rays of the first linear light source are parallel to the conveying direction of the first conveying line 208, thereby improving the concentration of light rays, improving the utilization rate of light energy, and reducing the risk of the first linear light source interfering with other devices outside the light ray row. The first linear light source can be understood as a light source that emits relatively long and strip-shaped light rays.

[0134] In some embodiments, the second visual camera 240 and the second light source 241 are arranged in a direction perpendicular to the conveying plane of the second conveying line 209, for example, the second visual camera 240 and the second light source 241 are arranged in the Z-axis direction in FIG. 3, thereby improving the structural compactness of the burr detection device.

[0135] The second light source 241 and the second visual camera 240 can be arranged on the same side of the pole piece 100, thereby reducing the risk of the second light source 241 interfering with the second visual camera 240, and improving the imaging contrast or imaging clarity of the second edge 102. In addition, the second light source 241 is arranged on both sides of the second visual camera 240 in a direction perpendicular to the conveying plane of the second conveying line 209, thereby reducing ghosting on the second edge 102 and further improving the imaging contrast or imaging clarity of the second edge 102. The second light source 241 includes a second linear light source, and the light rays of the second linear light source are parallel to the conveying direction of the second conveying line 209, thereby improving the concentration of light rays, improving the utilization rate of light energy, and reducing the risk of the second light source 241 interfering with other devices outside the light ray row. The second linear light source can be understood as a light source that emits relatively long and strip-shaped light rays.

[0136] In some embodiments, the length of the light ray row of the first linear light source is less than the length of the light ray row of the second linear light source.

[0137] In the embodiment, the burr detection device 200 can detect the burr of the short side (the first side 101) of the pole piece 100 at the first linear light source first, and then detect the burr of the long side (the second side 102) of the pole piece 100 at the second linear light source. The first linear light source and the second linear light source can be made to correspond to the lengths of the short side and the long side of the pole piece 100 respectively, which is beneficial to reduce the total length of the light source and reduce the loss of light energy.

[0138] In the embodiment, the controllable end of the first light source 221 and the controllable end of the second light source 241 can be electrically connected to the signal output end of the processing device 201 respectively. Specifically, the controllable end of the first light source 221 and the controllable end of the second light source 241 can be electrically connected to the signal output end of the lower computer 203 respectively, so that the first light source 221 and the second light source 241 can be turned on or turned off by the processing device 201 (the lower computer 203). In some embodiments, the first light source 221 and the second light source 241 can be respectively set as light sources with adjustable brightness, and the processing device 201 (specifically, the lower computer 203) is used to adjust the brightness of the first light source 221 and the second light source 241 respectively, so as to obtain images with higher imaging contrast or imaging definition from the first side 101 and the second side 102 respectively.

[0139] In some embodiments, referring to FIG. 3, the burr detection device 200 includes two first vision modules arranged oppositely, and the two first vision modules are arranged on the two sides of the conveying direction of the first conveying line 208 respectively.

[0140] In the embodiment, the first vision cameras 220 of the two first vision modules arranged oppositely on the two sides of the conveying direction of the first conveying line 208 can improve the detection efficiency of the two first sides 101, thereby improving the overall detection efficiency of the burr detection device 200.

[0141] In some embodiments, referring to FIG. 3, the burr detection device 200 includes two second vision modules arranged oppositely, and the two second vision modules are arranged on the two sides of the conveying direction of the second conveying line 209 respectively.

[0142] In the embodiment, the second vision cameras 240 of the two second vision modules arranged oppositely on the two sides of the conveying direction of the second conveying line 209 can improve the detection efficiency of the two second sides 102, thereby improving the overall detection efficiency of the burr detection device 200.

[0143] In some embodiments, before the above-mentioned pole piece 100 is transported to the first detection station 211 for obtaining the first lateral view, referring to FIGS. 3 and 5, the burr detection device 200 can be provided with a feeding module 280, which comprises the above-mentioned feeding bracket 281, the controllable force applying member 204, and the height detection apparatus 205. The feeding bracket 281 can be provided as a plate or the like, the controllable force applying member 204 can be provided as a controllable cylinder, a controllable motor, a controllable electric push rod, and corresponding transmission structures or connecting structures, etc., and the height detection apparatus 205 can be provided as an infrared sensor, a distance measuring sensor, etc. The power output end of the controllable force applying member 204 is connected with the feeding bracket 281, and the feeding bracket 281 is used for supporting the stacked pole pieces 100. The height detection apparatus 205 is used for detecting the height information of the pole piece 100 at the top. For example, referring to FIG. 5, the height detection apparatus 205 emits a detection line (such as an infrared line, etc.) shown by a dashed line in the figure, and the height detection apparatus 205 is arranged above the pole piece 100, at which time the height information can be provided as the distance between the height detection apparatus 205 and the pole piece 100 at the top.

[0144] For example, referring to FIG. 11, the height detection apparatus 205 can be electrically connected with the signal input end of the processing apparatus 201, and specifically can be connected with the signal input end of the upper computer 202; the signal output end of the processing apparatus 201 is electrically connected with the controllable end of the controllable force applying member 204, and specifically can make the signal output end of the lower computer 202 electrically connected with the controllable end of the controllable force applying member 204. The processing apparatus 201 is used for driving the feeding bracket 281 to ascend by the force applying member according to the height information and a preset corresponding relationship. For example, when the distance between the height detection apparatus 205 and the pole piece 100 at the top is greater than or equal to a first preset value, the processing apparatus 201 drives the feeding bracket 281 to ascend by the controllable force applying member, and the feeding bracket 281 ascends to a distance between the height detection apparatus 205 and the pole piece 100 at the top that is less than or equal to a second preset value. The second preset value can be provided as equal to the first preset value, or the second preset value can be provided as less than the first preset value, which is not limited in the embodiment.

[0145] In the embodiment, the feeding bracket 281 can buffer the pole pieces 100 to be detected by supporting the stacked pole pieces 100, thereby reducing the waiting time of the burr detection device 200 for the arrival of the pole pieces 100. In addition, the processing apparatus 201 drives the feeding bracket 281 to ascend by the force applying member according to the height information and a preset corresponding relationship, so that the height of the pole piece 100 at the top is kept in a relatively stable range, thereby reducing the difficulty of transferring the pole piece 100 to the conveying line 210, and improving the overall efficiency of transporting the pole piece 100 for detection.

[0146] Referring to FIG. 5, the feeding module 280 further comprises a plurality of columns 288 arranged in a ring shape and spaced apart, and the feeding bracket 281 is arranged in the surrounding space of the columns 288, so as to avoid the transverse disengagement of the pole piece 100. The top end of the column 288 is provided with an inclined surface 289, and the inclined surface 289 is arranged on the side facing the surrounding space. When the pole piece 100 is taken out upward from the above-mentioned surrounding space, the inclined surface 289 can reduce the risk of colliding with the side edge (such as the above-mentioned first edge 101 and the second edge 102) of the pole piece 100, reduce the risk of deformation of the burr on the side edge of the pole piece 100 due to collision, so that the burr shape detected by the burr detection device 200 is closer to the burr shape formed by the slitting device of the pole piece 100, thereby being able to more accurately find the slitting abnormality of the slitting device of the pole piece 100, thereby facilitating more accurate adjustment of the slitting device of the pole piece 100 to reduce the occurrence of abnormal burrs.

[0147] In some embodiments, in order to transfer the pole piece 100 from the above-mentioned feeding module 280 to the conveying line 210, referring to FIGS. 3 and 4, the burr detection device 200 can further comprise a feeding suction cup 282, a first transverse guide rail 283 and a first moving device 206 (referring to FIG. 11), which can be arranged as a mechanical arm, a guide rail structure and a corresponding driving motor or driving cylinder, etc. The first transverse guide rail 283 is arranged transversely to the conveying direction of the first conveying line 208 and across the first conveying line 208, for example, the first transverse guide rail 283 can be achieved by arranging corresponding support columns. The first moving device 206 is connected to the first transverse guide rail 283 and the feeding suction cup 282 respectively, and the feeding suction cup 282 is used to suck the pole piece 100 on both sides of the conveying direction of the first conveying line 208, for example, to suck the pole piece 100 at the front and rear ends in the Y-axis direction in FIG. 3, which can be understood as sucking the pole piece 100 on both sides in the X-axis direction.

[0148] In this embodiment, the first transverse guide rail 283 is arranged transversely to the conveying direction of the first conveying line 208 and across the first conveying line 208, and the feeding suction cup 282 sucks the pole piece 100 on both sides of the conveying direction of the first conveying line 208, which can improve the feeding efficiency of the pole piece 100 transferred to the first conveying line 208, and is beneficial to reduce the waiting time of the burr detection device 200 waiting for the pole piece 100, and is beneficial to improve the overall detection efficiency of the pole piece 100; at the same time, the first transverse guide rail 283 is arranged transversely, and the feeding suction cup 282 sucks the pole piece 100 on both sides of the conveying direction of the first conveying line 208, which can further improve the space utilization of the burr detection device 200.

[0149] In some embodiments, referring to FIG. 3, two of the above-described feeding modules 280 are arranged on both sides of the conveying direction of the first conveying line 208, for example, two of the above-described feeding modules 280 are arranged on both sides of the X-axis direction in FIG. 3 (which can be understood as both ends of the Y-axis direction). The two feeding modules 280 are arranged corresponding to both ends of the first transverse guide rail 283, and the feeding suction disc 282 is used to suck the pole piece 100 from the two feeding modules 280.

[0150] In this embodiment, two of the above-described feeding modules 280 are arranged on both sides of the conveying direction of the feeding module 280, which can increase the total amount of buffer of the burr detection device 200 for the pole piece 100, further reduce the waiting time of the burr detection device 200 for the arrival of the pole piece 100, and further improve the overall detection efficiency of the pole piece 100.

[0151] In some embodiments, the signal output end of the processing device 201 is electrically connected with the first moving device 206, and specifically, the signal output end of the lower computer 203 can be electrically connected with the first moving device 206. Referring to FIG. 6, the processing device 201 (specifically, the upper computer 202) can be based on the length of the second edge 102 and the size of the supporting structure of the first detection workbench 211 (for example, according to the width of the first conveying line 208), and the processing device 201 drives the first moving device 206 to place the pole piece 100 on the first detection workbench 211 (for example, on the first conveying line 208), so that the first edge 101 is suspended by extending towards the first visual camera 220, for example, the first edge 101 extends by a suspended size L towards the first visual camera 220.

[0152] In this embodiment, the burr detection device 200 can make the first edge 101 suspended by extending towards the first visual camera 220, reduce the imaging interference of other structures on the burr on the first edge 101, and improve the recognition success rate of the burr on the first edge 101.

[0153] Similarly, for the case that the pole piece 100 is placed on the second detection workbench 212, in some embodiments, based on the length of the first edge 101 and the size of the supporting structure of the second detection workbench 212 (for example, according to the width of the second conveying line 209), the processing device 201 drives the first moving device 206 to place the pole piece 100 on the first detection workbench 211 and drives the rotating suction disc 231 to place the pole piece 100 on the second detection workbench 212 (for example, on the second conveying line 209), so that the second edge 102 is suspended by extending towards the second visual camera 240.

[0154] In this embodiment, the burr detection device 200 can make the second edge 102 protrude and hang towards the first visual camera 220, reducing the imaging interference of other structures on the burr on the second edge 102, and improving the identification success rate of the burr on the second edge 102.

[0155] Since the pole piece 100 is usually light in weight, the pole piece 100 can be deviated in position during conveying. In some embodiments, the first conveying line 208 and the second conveying line 209 can be respectively provided with two conveying rollers arranged at intervals; referring to FIGS. 3 and 6, the first conveying line 208 and the second conveying line 209 further respectively include a conveying belt 214 and a vacuum forming device; the conveying belt 214 is sleeved on the two conveying rollers (for example, the above-mentioned driving roller and the driven roller) arranged at intervals to form the above-mentioned first conveying line 208 and the second conveying line 209, and at this time, the conveying belt 214 can form a ring around the two conveying rollers. It can be understood that the pole piece 100 can continue to be conveyed to the second conveying line 209 and the like downstream after leaving the above-mentioned first conveying line 208. The conveying belt 214 can be provided with a plurality of first through holes 215 arranged in an array; the vacuum forming device has an opening structure, the opening structure is arranged inside the conveying belt 214 and is covered by the conveying belt 214, and the opening of the opening structure is communicated with the first through hole 215. The vacuum forming device can include a vacuum machine and the like.

[0156] In this embodiment, the vacuum forming device and the conveying belt 214 can improve the adsorption force on the pole piece 100 through the first through hole 215, improve the transportation stability of the pole piece 100, and reduce the risk of imaging blur caused by the position deviation of the pole piece 100.

[0157] In some embodiments, referring to FIG. 6, the opening structure can include a plate body 216, the plate body 216 is provided with at least one groove 217 extending along the conveying direction of the corresponding first conveying line 208 or the second conveying line 209, and the bottom wall of the groove 217 is provided with at least one second through hole 218; the plate body 216 abuts against the conveying belt 214 to make the conveying belt 214 cover the slot of the groove 217, the slot of the groove 217 is communicated with the first through hole 215, and the opening of the opening structure includes the second through hole 218 and the slot of the groove 217.

[0158] In this embodiment, when the conveying belt 214 moves relative to the plate body 216, the first through hole 215 can be kept communicated with the second through hole 218 through the relatively long groove 217, the adsorption force on the pole piece 100 is further improved, the transportation stability of the pole piece 100 is further improved, and the risk of imaging blur caused by the position deviation of the pole piece 100 is further reduced.

[0159] In some embodiments, the pole piece 100 can be arranged to be moved to the first detection station 211 in a manner that the first edge 101 is arranged opposite to the first visual camera 220. At this time, when the pole piece 100 is conveyed to the first detection station 211 by the first conveying line 208 and is ready to be captured by the first visual camera 220 to obtain the first lateral view of the first edge 101, the angle of the first edge 101 relative to the first visual camera 220 can still be offset.

[0160] In some embodiments, referring to FIG. 3 and FIG. 6, the burr detection device 200 further comprises a first positioning camera 250 and a first driving body. The first positioning camera 250 and the first visual camera 220 are arranged along a direction surrounding the first conveying line 208; the first positioning camera 250 is arranged opposite to the conveying plane of the first conveying line 208, and the first positioning camera 250 is connected with the device support 207, for example, the first positioning camera 250 in FIG. 3 is arranged above the first detection station 211. Specifically, the first positioning camera 250 can be arranged as a CCD (Charge Coupled Device) camera or the like. In FIG. 3, the lines similar to pyramids represent the detection range of the first positioning camera 250.

[0161] The first visual camera 220 is movably connected with the device support 207, and the first visual camera 220 is used to move along a direction parallel to the conveying plane of the first conveying line 208; the first driving body is drivingly connected with the first visual camera 220 to move the first visual camera 220 relative to the device support 207; the signal input end of the processing device 201 (which can be the upper computer 201) is electrically connected with the first positioning camera 250, and the signal output end of the processing device 201 (which can be the lower computer 203) is electrically connected with the first driving body; the electrical connection can be achieved by wired connection, wireless transmission or the like to realize the communication or data transmission between the two connected devices. The first positioning camera 250 is used to obtain the profile of the first edge 101 of the pole piece 100, for example, above the thickness direction of the pole piece 100. The processing device 201 is used to drive the first driving body according to the profile of the first edge 101 to move the first visual camera 220 along a direction parallel to the profile of the first edge 101 relative to the pole piece 100.

[0162] The first positioning camera 250 can obtain the first profile of the first edge 101 in the thickness direction of the pole piece 100 after the first conveying line 208 conveys the pole piece 100 to the first detection station 211.

[0163] After the first positioning camera 250 acquires the first profile of the first edge 101, the processing device 201 can be configured to determine the angle of the first edge 101 relative to the first vision camera 220 according to the first profile, for example, by using existing image recognition technology.

[0164] In addition, the processing device 201 can be configured to move the first vision camera 220 in a direction parallel to the first profile, which can be understood as the movement trajectory of the first vision camera 220 being parallel to the first profile, so as to move the first vision camera 220 to a more central shooting position or to move the first vision camera 220 for continuous shooting. Specifically, the angle of the first profile relative to the first vision camera 220 can be determined, so as to determine the movement trajectory of the first vision camera 220, and then the first vision camera 220 can be moved in a direction parallel to the first profile according to the movement trajectory.

[0165] In this embodiment, the burr detection device 200 can acquire the first profile of the first edge 101 in the thickness direction of the pole piece 100 through the first positioning camera 250, and then drive the first drive body to move the first vision camera 220 in a direction parallel to the first profile according to the first profile, so as to reduce the distance change between the first vision camera 220 and the first edge 101, improve the focusing accuracy of the first vision camera 220 on the first edge 101, and facilitate improving the burr detection accuracy of the first edge 101.

[0166] In some embodiments, the first drive body can include a first sliding table assembly and a second sliding table assembly. Referring to FIG. 3 or FIG. 7, the first sliding table assembly includes a first sliding table base 291, a first sliding body, and a first drive device, which can be configured to include a drive motor or a drive cylinder, etc. The first sliding body is in sliding connection with the first sliding table base 291, and the first drive device is used to drive the first sliding body to slide along the extension direction of the first sliding table base 291.

[0167] The second sliding table assembly includes a second sliding table base 292, a second sliding body, and a second drive device, which can be configured to include a drive motor or a drive cylinder, etc.; the second sliding body is in sliding connection with the second sliding table base 292, and the second drive device is used to drive the second sliding body to slide along the extension direction of the second sliding table base 292.

[0168] One of the first sliding base 291 and the second sliding base 292 is arranged to extend along a tangent of the conveying direction of the first conveying line 208, and the other of the first sliding base 291 and the second sliding base 292 extends along a direction intersecting the tangent of the conveying direction of the first conveying line 208, for example, the first sliding base 291 extends along the X-axis direction in FIG. 3 or FIG. 7, and the second sliding base 292 extends along the Y-axis direction in FIG. 3 or FIG. 7. The second sliding base 292 is connected with the first sliding body, so that the second sliding base 292 can slide along the extension direction of the first sliding base 291, for example, the second sliding base 292 can move along the X-axis direction in FIG. 3 or FIG. 7. The first visual camera 220 can be arranged to be connected with the second sliding body, so that the first visual camera 220 can slide relative to the extension direction of the second sliding base 292, for example, move along the Y-axis direction in FIG. 3 or FIG. 7. Thus, relative to the first sliding base 291, the first visual camera 220 can move in the X-axis direction and the Y-axis direction.

[0169] The first sliding base 291 is arranged opposite to the first detection station 211, and the first driving device and the second driving device of the first driving body are respectively electrically connected with the signal output end of the processing device 201 (which can be specifically a lower computer 203). The processing device 201 is configured to drive the first driving device and the second driving device respectively according to the first profile, so as to drive the first visual camera 220 to move along a direction parallel to the first profile.

[0170] In this embodiment, the overall structure of the first driving body is more compact, which is more conducive to reducing the distance change between the first visual camera 220 and the first edge 101, improving the focusing accuracy of the first visual camera 220 on the first edge 101, and improving the burr detection accuracy of the first edge 101.

[0171] In some embodiments, referring to FIG. 3 and FIG. 9, the device support 207 is provided with a first longitudinal guide rail 251, which extends along a direction perpendicular to the conveying plane of the first conveying line 208, for example, extends along the Z-axis direction in the drawing; the first positioning camera 250 is movably connected with the first longitudinal guide rail 251 along the extension direction of the first longitudinal guide rail 251; the burr detection device 200 further comprises a first locking structure 252, which is connected with the first positioning camera 250 and the first longitudinal guide rail 251 respectively, and is configured to limit the movement between the first positioning camera 250 and the first longitudinal guide rail 251. The first locking structure 252 can be arranged as a threaded structure, a plug rod structure, etc.

[0172] In this embodiment, the burr detection device 200 can adjust the distance between the first positioning camera 250 and the first conveying line 208 through the first longitudinal guide rail 251, and keep the first positioning camera 250 stable through the first locking structure 252, so as to improve the focusing accuracy of the first positioning camera 250 and the positioning accuracy.

[0173] In some embodiments, referring to FIG. 3, the burr detection device 200 further comprises a second positioning camera 260 and a second driving body. The second positioning camera 260 and the second visual camera 240 are arranged along the direction surrounding the second conveying line 209; the second positioning camera 260 is arranged opposite to the conveying plane of the second conveying line 209, and is connected with the device support 207, for example, the second positioning camera 260 in FIG. 3 is arranged above the second detection station 212. Specifically, the second positioning camera 260 can be a CCD (Charge Coupled Device) camera or the like. In FIG. 3, the lines similar to pyramids represent the detection range of the second positioning camera 260.

[0174] The second visual camera 240 is movably connected with the device support 207, and is used to move along the direction parallel to the conveying plane of the second conveying line 209; the second driving body is drivingly connected with the second visual camera 240, so as to move the second visual camera 240 relative to the device support 207; the signal input end of the processing device 201 is electrically connected with the second positioning camera 260, and the signal output end of the processing device 201 is electrically connected with the second driving body; the second positioning camera 260 is used to acquire the profile of the second edge 102 of the pole piece 100, and the processing device 201 is used to drive the second driving body according to the profile of the second edge 102, so as to drive the second visual camera 240 to move relative to the pole piece 100 along the direction parallel to the profile of the second edge 102.

[0175] The processing device 201 can be configured to drive the second visual camera 240 to move along the direction parallel to the second profile, which can be understood as that the moving track of the second visual camera 240 is parallel to the second profile, so as to move the second visual camera 240 to a more central shooting position or to continuously shoot by moving the second visual camera 240.

[0176] In the embodiment, the burr detection device 200 can acquire the second profile of the second edge 102 in the thickness direction of the pole piece 100 through the second positioning camera 260, and drive the second vision camera 240 to move along a direction parallel to the second profile according to the second profile, so as to reduce the distance change between the second vision camera 240 and the second edge 102, improve the focusing accuracy of the second vision camera 240 on the second edge 102, and facilitate improving the burr detection accuracy of the second edge 102.

[0177] In some embodiments, the second driving body can include a third sliding table assembly and a fourth sliding table assembly. Referring to FIG. 3, the third sliding table assembly includes a third sliding table base 293, a third sliding body, and a third driving device, which can be provided as a driving motor or a driving cylinder, etc. The third sliding body is in sliding connection with the third sliding table base 293, and the third driving device is used to drive the third sliding body to slide along the extension direction of the third sliding table base 293.

[0178] The fourth sliding table assembly includes a fourth sliding table base 294, a fourth sliding body, and a fourth driving device, which can be provided as a driving motor or a driving cylinder, etc. The fourth sliding body is in sliding connection with the fourth sliding table base 294, and the fourth driving device is used to drive the fourth sliding body to slide along the extension direction of the fourth sliding table base 294.

[0179] One of the third sliding table base 293 and the fourth sliding table base 294 is provided in extension along the tangent of the conveying direction of the second conveying line 209, and the extension direction of the other of the third sliding table base 293 and the fourth sliding table base 294 intersects with the tangent of the conveying direction of the second conveying line 209, for example, the third sliding table base 293 is provided in extension along the X-axis direction in FIG. 3, and the fourth sliding table base 294 is provided in extension along the Y-axis direction in FIG. 3. The fourth sliding table base 294 is connected with the third sliding body, so that the fourth sliding table base 294 can slide along the extension direction of the third sliding table base 293, for example, the fourth sliding table base 294 can move along the X-axis direction in FIG. 3. The second vision camera 240 is connected with the fourth sliding body, so that the second vision camera 240 can slide relative to the extension direction of the fourth sliding table base 294, for example, move along the Y-axis direction in FIG. 3. Thus, relative to the third sliding table base 293, the second vision camera 240 can move in the X-axis direction and the Y-axis direction.

[0180] The third sliding table base 293 is oppositely arranged with the second detection station 212, and the third driving device and the fourth driving device of the second driving body are respectively electrically connected with the signal output end of the processing device 201 (specifically, the lower computer 203), and the processing device 201 is used to drive the third driving device and the fourth driving device respectively according to the second profile, so as to drive the second vision camera 240 to move along a direction parallel to the second profile.

[0181] In this embodiment, the overall structure of the second driving body is more compact, which is more conducive to reducing the distance variation between the second visual camera 240 and the second edge 102, improving the focusing accuracy of the second visual camera 240 on the second edge 102, and improving the burr detection accuracy of the second edge 102.

[0182] In some embodiments, the device support 207 is provided with a second longitudinal guide rail 261, which extends in a direction perpendicular to the conveying plane of the second conveying line 209, for example, in the Z-axis direction in the figure; the second positioning camera 260 is movably connected with the second longitudinal guide rail 261 in the extension direction of the second longitudinal guide rail 261; the burr detection device 200 further comprises a second locking structure 262, which is respectively connected with the second positioning camera 260 and the second longitudinal guide rail 261, and is used to limit the movement between the second positioning camera 260 and the second longitudinal guide rail 261. The second locking structure 262 can be provided as a threaded structure, a plug rod structure, etc.

[0183] In this embodiment, the burr detection device 200 can adjust the distance between the second positioning camera 260 and the second conveying line 209 through the second longitudinal guide rail 261, and keep the second positioning camera 260 stable in position through the second locking structure 262, which is conducive to improving the focusing accuracy of the second positioning camera 260 and thus improving the positioning accuracy.

[0184] The side edge burr of the pole piece 100 usually extends in a direction parallel to the side plane of the pole piece 100, but due to the cutting device of the side edge and other reasons, the burr may also extend in a direction intersecting the side plane, or even perpendicular to the side plane of the pole piece 100. In this case, the visual camera for shooting the side edge has a low detection success rate for the burr that is more vertical on the side plane of the pole piece 100.

[0185] In some embodiments, referring to FIGS. 3 and 8, the burr detection device 200 further comprises a third visual module, which comprises a third visual camera 270 and a third light source; the first conveying line 208, the carrier 210 and the second conveying line 209 are arranged in sequence; the third visual module is arranged between the first visual camera 220 and the second visual module along the arrangement direction of the first conveying line 208, the carrier 210 and the second conveying line 209; the third visual camera 270 is connected with the device support 207, and the third visual camera 270 is arranged opposite to the carrier 210; the third visual camera 270 is used to acquire a profile edge image of the pole piece 100 in the thickness direction of the pole piece 100, and the third visual camera 270 is electrically connected with the signal input end of the processing device 201, and the processing device 201 is used to identify the burr in the profile edge image.

[0186] The third visual camera 270 can be arranged as an area array camera or a line array camera. The area array camera sensor arranges the pixels in a matrix, and the sensor directly outputs an image after row exposure or frame exposure. The line array camera sensor usually has only one row (or two to three rows) of pixels, and works in a manner similar to a scanner, and performs cyclic exposure on the row of pixels. When the third visual camera 270 is arranged as a line array camera, the burr detection device 200 can be equipped with a motion mechanism for uniform motion of the third visual camera 270. The third visual camera 270 is used to acquire a profile edge image of the pole piece 100 in the thickness direction of the pole piece 100, for example, above the thickness direction of the pole piece 100. The third visual camera 270 is electrically connected to the signal input end of the processing device 201 (which can be specifically an upper computer 202), and the processing device 201 (which can be specifically an upper computer 202) is used to identify the burrs in the profile edge image. The processing device 201 can use existing image recognition technology to identify the burrs in the profile edge image. The processing device 201 can also form an identification model for identifying the burrs in the profile edge image through model training.

[0187] In this embodiment, the burr detection device 200 can acquire a profile edge image of the pole piece 100 in the thickness direction of the pole piece 100 through the third visual camera 270, thereby improving the success rate of identifying burrs in the thickness direction of the pole piece 100 and reducing the adverse effects of burrs on subsequent battery assembly processes.

[0188] In some embodiments, the third visual camera 270 is arranged opposite to the bearing plane of the bearing body 210, and the third light source is arranged on the side of the bearing body 210 away from the third visual camera 270, and the third light source is used to emit light in the direction toward the third visual camera 270. For example, the third visual camera 270 can be arranged on the upper side of the bearing body 210, and the third light source can be arranged on the lower side of the bearing body.

[0189] In this embodiment, the third light source is arranged on the side of the bearing body 210 away from the third visual camera 270, and the third light source emits light in the direction toward the third visual camera 270, which is beneficial to further improve the success rate of identifying burrs in the thickness direction of the pole piece 100.

[0190] In some embodiments, referring to FIG. 3 and FIG. 9, the device support 207 is provided with a third longitudinal guide rail 271 extending in a direction perpendicular to the bearing plane of the bearing body 210, for example, extending in the Z-axis direction in the drawing; the third visual camera 270 is movably connected with the third longitudinal guide rail 271 in the extension direction of the third longitudinal guide rail 271; the burr detection device 200 further comprises a third locking structure 272 connected with the third visual camera 270 and the third longitudinal guide rail 271 respectively, and the third locking structure 272 is used to limit the movement between the third visual camera 270 and the third longitudinal guide rail 271. The third locking structure 272 can be provided as a threaded structure, a plug rod structure, etc.

[0191] In this embodiment, the burr detection device 200 can adjust the distance between the third visual camera 270 and the bearing body 210 through the third longitudinal guide rail 271, and keep the third visual camera 270 stable in position through the third locking structure 271, which is beneficial to improve the focusing accuracy of the third visual camera 270, thereby further improving the success rate of identifying burrs in the thickness direction of the pole piece 100.

[0192] In some embodiments, referring to FIG. 3 and FIG. 8, in the conveying direction of the conveying line 210, the third visual camera 270 is arranged between the first visual camera 220 and the second visual camera 240, for example, the first visual camera 220, the third visual camera 270 and the second visual camera 240 are arranged in sequence in the conveying direction (for example, the X-axis direction in the drawing) of the conveying line 210. The length of the first edge 101 is less than the length of the second edge 102; the signal output end of the processing device 201 (which can be specifically a lower computer 203) is electrically connected with the rotary driving body, and the processing device 201 is used to drive the rotary driving body to rotate the pole piece 100 after the third visual camera 270 acquires the profile edge image; the burr detection device 200 comprises two third visual modules, and the two third visual cameras 270 are arranged in parallel to the width direction of the first conveying line 208, for example, arranged in the Y-axis direction in the drawing, and the shooting areas of the two third visual cameras 270 on the pole piece 100 partially overlap. The two third visual cameras 270 can be arranged in the Y-axis direction in the drawing; referring to FIG. 3 and FIG. 8, the shooting areas of the two third visual cameras 270 on the pole piece 100 partially overlap.

[0193] In this embodiment, the burr detection device 200 can first detect the burr of the first side 101 with a smaller length, and improve the success rate of identifying the burr in the thickness direction of the pole piece 100 by arranging two third vision cameras 270 along the width direction parallel to the first conveying line 208 and partially overlapping the shooting area, thereby improving the connection efficiency of each burr detection process of the pole piece 100. At the same time, the burr detection device 200 also reduces the shooting range requirement of the third vision camera 270, thereby reducing the equipment cost of the third vision camera 270.

[0194] In some embodiments, referring to FIGS. 3 and 10, the burr detection device 200 can be provided to include two rotating modules 230 arranged along the conveying direction of the first conveying line 208. The burr detection device 200 further includes a fifth sliding table assembly. Referring to FIG. 3, the fifth sliding table assembly includes a fifth sliding base 295, a fifth sliding body, a sixth sliding body, and a fifth driving device, which can be provided to include a driving motor or a driving cylinder, etc. The fifth sliding body and the sixth sliding body are respectively in sliding connection with the fifth sliding base 295. The fifth sliding base 295 is arranged to extend along the conveying direction of the conveying line 210, for example, along the X-axis direction in FIG. 3.

[0195] The fifth driving device is used to drive the fifth sliding body and the sixth sliding body to slide along the extension direction of the fifth sliding base, for example, along the X-axis direction in FIG. 3. The two rotating modules 230 are respectively connected to the fifth sliding body and the sixth sliding body. In addition, the rotating module 230 can further include a structure for lifting the rotating suction disc 231, so as to reduce the risk of the rotating suction disc 231 colliding with the conveying line 210 or other structures during the movement of the fifth sliding body or the sixth sliding body. The fifth sliding table assembly is used to transport the pole piece 100 to the third detection station 213 for the third vision camera 270 to acquire the profile edge image. The processing device 201 can also be used to: when one of the rotating modules 230 transfers the pole piece 100 from the first detection station 211 to the third detection station 213, the other rotating module 230 transfers another pole piece 100 from the third detection station 213 to the second detection station 212, thereby improving the transportation efficiency of the pole piece 100 between the detection stations, and improving the overall detection efficiency of the pole piece 100.

[0196] In some embodiments, the fifth sliding body and the sixth sliding body are independently provided, and the fifth driving device is used to drive the fifth sliding body and the sixth sliding body to slide respectively, thereby improving the independence of driving and improving the use flexibility of the burr detection device 200.

[0197] In some embodiments, the fifth sliding body is fixedly connected with the sixth sliding body, the distances from the first detection station 211 to the third detection station 213, from the third detection station 213 to the second detection station 212, and from the first rotating module 230 to the second rotating module 230 are equal, so as to reduce the required driving signals and improve the operation reliability of the burr detection device 200.

[0198] In some embodiments, referring to FIG. 3, the burr detection device 200 further comprises a blanking chuck 284, a second transverse guide rail 285, a second moving device, a first blanking bracket 286, and a second blanking bracket 287. The second transverse guide rail 285 is arranged on the second conveying line 209 transversely to the conveying direction of the second conveying line 209, for example, the second transverse guide rail 285 can be arranged by arranging corresponding support columns. The second moving device can be arranged as a mechanical arm, a guide rail structure, and a corresponding driving motor or driving cylinder.

[0199] The second moving device is connected with the second transverse guide rail 285 and the blanking chuck 284 respectively, the blanking chuck 284 is used for sucking the pole piece 100 on the second conveying line 209; the second moving device is electrically connected with the signal output end of the processing device 201 (specifically, the lower computer 203), and the second moving device is used for placing the pole piece 100 on the first blanking bracket 286 or the second blanking bracket 287 according to at least one of the image obtained by the first vision module, the image obtained by the second vision module, and the profile edge image.

[0200] For example, when the burr identification result is qualified, the pole piece 100 is placed on the first blanking bracket 286; when the burr identification result is unqualified, the pole piece 100 is placed on the second blanking bracket 287. Of course, the first blanking bracket 286 can also be used to place the unqualified pole piece 100, and the second blanking bracket 287 can also be used to place the qualified pole piece 100, which is not limited in the embodiment.

[0201] In this embodiment, the burr detection device 200 can place the pole pieces 100 with different burr identification results into the first blanking bracket 286 or the second blanking bracket 287 through the blanking chuck 284, the second transverse guide rail 285, and the second moving device, so as to realize the classification of the pole pieces 100 with different burr identification results and reduce the risk of subsequent mixing of the pole pieces 100 with different burr identification results. In addition, the second transverse guide rail 285 is arranged on the second conveying line 209 transversely to the conveying direction of the second conveying line 209, which effectively improves the space utilization of the burr detection device 200.

[0202] In some embodiments, referring to FIGS. 2 and 3, the second discharging bracket 287 is arranged opposite to the end of the second conveying line 209, the second discharging bracket 287 is arranged downstream of the conveying direction of the second conveying line 209, and the first discharging bracket 286 is arranged aside of the conveying direction of the second conveying line 209; at least part of the first discharging bracket 286 is arranged upstream of the second discharging bracket 287 along the conveying direction of the second conveying line 209, thereby improving the space utilization of the burr detection device 200.

[0203] In some embodiments, referring to FIGS. 2 and 3, the two ends of the second transverse guide rail 285 are respectively provided with support columns, and the second transverse guide rail 285 is provided with an extension guide rail 296 between the support columns; the extension guide rail 296 is arranged extending along the conveying direction of the second conveying line 209; and the second transverse guide rail 285 is in sliding connection with the extension guide rail 296 in the conveying direction of the second conveying line 209. In addition, the burr detection device 200 further comprises a third moving device for driving the second transverse guide rail 285 to move relative to the extension guide rail 296 in the conveying direction of the second conveying line 209. In addition, the controllable end of the third moving device can be electrically connected with the signal output end of the processing device 201, specifically, can be electrically connected with the signal output end of the lower computer 203, thereby facilitating the placement of the pole piece 100 on the first discharging bracket 286 or the second discharging bracket 287 according to the burr detection result, and improving the automation degree of the burr detection device 200. The third moving device can comprise a driving motor and a corresponding transmission structure, etc.

[0204] When the first discharging bracket 286 is used for placing qualified pole pieces 100 and the second discharging bracket 287 is used for placing unqualified pole pieces 100, the production equipment of the pole pieces 100 is usually adjusted to have a qualified rate greater than an unqualified rate, so that the pole pieces 100 are more placed on the first discharging bracket 286. Since at least part of the first discharging bracket 286 is arranged upstream of the second discharging bracket 287 along the conveying direction of the conveying line 210, the use of the first discharging bracket 286 for placing qualified pole pieces 100 can reduce the overall moving distance of the second transverse guide rail 285 relative to the extension guide rail 296, thereby reducing the overall power consumption of the burr detection device 200.

[0205] The extension guide rail 296 can be arranged on the support column at one end of the second transverse guide rail 285, or the extension guide rails 296 can be arranged on the support columns at both ends of the second transverse guide rail 285, thereby improving the moving stability of the second transverse guide rail 285. In addition, the third moving device can be arranged on the support column at one end of the second transverse guide rail 285, or the third moving devices can be arranged on the support columns at both ends of the second transverse guide rail 285, thereby further improving the moving stability of the second transverse guide rail 285, which is not limited in the present embodiment.

[0206] The application also provides a burr detection method applied to the burr detection device 200. Referring to FIG. 12, the burr detection method comprises the following steps:

[0207] In step S100, the pole piece 100 is conveyed with the first side 101 facing the side of the conveying direction. Specifically, the pole piece 100 can be conveyed by the first conveying line 208, and the first side 101 can face the side of the conveying direction of the first conveying line 208;

[0208] In step S200, the first side view of the first side 101 is acquired. Specifically, the first side view can be acquired by the first vision camera 220.

[0209] In step S300, the pole piece 100 is rotated so that the pole piece 100 changes from the first side 101 facing the side of the conveying direction to the second side 102 of the pole piece 100 facing the side of the conveying direction. Specifically, the pole piece 100 can be rotated by the rotating module 230, and the second side 102 of the pole piece 100 after rotation can face the side of the conveying direction of the second conveying line 209 and be placed on the second conveying line 209 for continuous conveying.

[0210] In step S400, the second side view of the second side 102 is acquired. Specifically, the second side view can be acquired by the second vision camera 240.

[0211] In step S500, the burrs in the first side view and the burrs in the second side view are identified. Specifically, the burrs can be identified by the processing device 201 (specifically, the host computer 202).

[0212] The burr detection method in the technical scheme of the application can convey the pole piece 100 with the first side 101 of the pole piece 100 facing the side of the conveying direction, acquire the first side view of the first side 101, rotate the pole piece 100 so that the second side 102 of the pole piece 100 faces the side of the conveying direction, acquire the second side view of the second side 102, and identify the burrs in the first side view and the burrs in the second side view. The burr detection method is beneficial to improving the connection efficiency of the burr detection processes of the pole piece 100 and is beneficial to improving the overall detection speed of the burrs of the pole piece 100.

[0213] In some embodiments, before the step of rotating the pole piece 100 (step S300), the burr detection method further comprises the following steps:

[0214] In the thickness direction of the pole piece 100, the first profile of the first side 101 is acquired. Specifically, the first profile can be acquired by the first positioning camera 250.

[0215] The step of obtaining the first lateral image of the first edge 101 (step S200 described above) comprises: according to the first profile, moving the first vision camera 220 along a direction parallel to the first profile to obtain the first lateral image of the first edge 101; in particular, the first vision camera 220 can be moved along a direction parallel to the first profile by the processing device 201 to obtain the first lateral image of the first edge 101.

[0216] In this embodiment, the burr detection method can obtain the first profile of the first edge 101 in the thickness direction of the pole piece 100, and then move the first vision camera 220 along a direction parallel to the first profile according to the first profile, so as to reduce the distance change between the first vision camera 220 and the first edge 101, improve the focusing accuracy of the first vision camera 220 on the first edge 101, and facilitate improving the burr detection accuracy of the first edge 101.

[0217] In some embodiments, after the step of rotating the pole piece 100 (step S300 described above), the burr detection method further comprises the following steps:

[0218] Obtaining the second profile of the second edge 102 in the thickness direction of the pole piece 100; in particular, the second profile can be obtained by the second positioning camera 260;

[0219] The step of obtaining the second lateral image of the second edge 102 (step S400 described above) comprises: according to the second profile, moving the second vision camera 240 along a direction parallel to the second profile to obtain the second lateral image of the second edge 102; in particular, the second vision camera 240 can be moved along a direction parallel to the second profile by the processing device 201 to obtain the second lateral image of the second edge 102.

[0220] In this embodiment, the burr detection method can obtain the second profile of the second edge 102 in the thickness direction of the pole piece 100, and then move the second vision camera 240 along a direction parallel to the second profile according to the second profile, so as to reduce the distance change between the second vision camera 240 and the second edge 102, improve the focusing accuracy of the second vision camera 240 on the second edge 102, and facilitate improving the burr detection accuracy of the second edge 102.

[0221] In some embodiments, after the step of obtaining the first lateral image of the first edge 101 (step S200 described above) and before the step of obtaining the second lateral image of the second edge 102 (step S400 described above), the burr detection method further comprises the following steps:

[0222] Obtaining a profile edge image of the pole piece 100 in the thickness direction of the pole piece 100; in particular, the profile edge image can be obtained by the third vision camera 270;

[0223] The burr in the profile edge map can be identified, specifically by the processing device 201 (specifically by the host computer 202).

[0224] In this embodiment, the burr detection method can obtain the profile edge map of the pole piece 100 in the thickness direction of the pole piece 100, thereby improving the success rate of identifying the burr in the thickness direction of the pole piece 100, and reducing the adverse effects of the burr on the subsequent battery cell assembly process.

[0225] In some embodiments, the step of obtaining the first lateral map of the first edge 101 includes: obtaining the first lateral map of the first edge 101 on the opposite sides of the pole piece 100, respectively; and / or,

[0226] The step of obtaining the second lateral map of the second edge 102 includes: obtaining the second lateral map of the second edge 102 on the opposite sides of the pole piece 100, respectively.

[0227] In this embodiment, the first lateral map of the first edge 101 is obtained on the opposite sides of the pole piece 100, respectively, and the second lateral map of the second edge 102 is obtained on the opposite sides of the pole piece 100, respectively, which can respectively improve the detection efficiency of the two first edges 101 and the two second edges 102, thereby improving the overall detection efficiency of the burr detection device 200.

[0228] In some embodiments, before the step of obtaining the first lateral map of the first edge 101, specifically before the step of conveying the pole piece 100 and making the first edge 101 face the side of the conveying direction (the above step S100), the burr detection method further includes the following steps:

[0229] Stacking the pole piece 100 on the loading bracket 281;

[0230] Detecting the height information of the pole piece 100 on the top, specifically by the height detection device 205;

[0231] Rising the loading bracket 281 according to the height information and a preset corresponding relationship, specifically by the controllable force applying member 204.

[0232] In this embodiment, the burr detection method can buffer the pole piece 100 to be detected by supporting the stacked pole piece 100 on the loading bracket 281, thereby reducing the waiting time of the burr detection method for the arrival of the pole piece 100. In addition, the loading bracket 281 is raised according to the height information and the preset corresponding relationship, so that the height of the pole piece 100 on the top is maintained within a relatively stable range, thereby reducing the difficulty of transferring the pole piece 100 to the first conveying line 208, and improving the overall efficiency of conveying the pole piece 100 for detection.

[0233] In some embodiments, before the step of acquiring the first side view of the first edge 101, specifically before the step of conveying the pole piece 100 and making the first edge 101 deviate from the conveying direction (the step S100 described above), the burr detection method further comprises the following steps:

[0234] The feeding bracket 281 is arranged on both sides of the conveying direction of the pole piece 100;

[0235] The pole piece 100 is conveyed away from the feeding bracket 281, specifically can be conveyed to the first detection station 211, on both sides of the conveying direction of the pole piece 100.

[0236] In this embodiment, the pole piece 100 is conveyed away from the feeding bracket 281 on both sides of the conveying direction of the pole piece 100, which can improve the feeding efficiency of transferring the pole piece 100 to the first conveying line 208, is conducive to reducing the waiting time of the burr detection method for the pole piece 100, and is conducive to improving the overall detection efficiency of the pole piece 100.

[0237] In some embodiments, before the step of acquiring the first side view of the first edge 101, specifically before the step of conveying the pole piece 100 and making the first edge 101 deviate from the conveying direction (the step S100 described above), the step of stacking the pole piece 100 on the feeding bracket 281 comprises:

[0238] After the pole piece 100 at the slitting station is flipped, it is stacked on the feeding bracket 281; specifically, manual flipping or mechanical flipping can be used.

[0239] In this embodiment, when the pole piece 100 is slitting at the slitting station, the slitting force is usually downward, so the burr usually extends downward at the slitting station; after the pole piece 100 at the slitting station is flipped, the part of the burr protruding from the thickness of the pole piece 100 has a reduced risk of being collided by the bearing plane, so that the burr shape detected by the burr detection device 200 is closer to the burr shape formed by the slitting device of the pole piece 100, thereby more accurately discovering the slitting abnormality of the slitting device of the pole piece 100, thereby facilitating more accurate adjustment of the slitting device of the pole piece 100 to reduce the occurrence of abnormal burrs.

[0240] In some embodiments, the step of conveying the pole piece 100 away from the feeding bracket 281 on both sides of the conveying direction of the pole piece 100 comprises:

[0241] After the preset number of pole pieces 100 on one side of the conveying direction of the pole piece 100 are transported away from the feeding bracket 281, the pole pieces 100 on the other side of the conveying direction of the pole piece 100 are transported away from the other feeding bracket 281, and the preset number is greater than or equal to 2. For example, the feeding bracket 281 on one side of the conveying direction of the pole piece 100 is stacked with 10 pieces of pole pieces 100, and then the pole pieces 100 on the other side of the feeding bracket 281 can be transported.

[0242] In this embodiment, the burr detection method can continuously transport more pole pieces 100 on the same side of the conveying direction of the pole piece 100, reduce the number of switching between the two sides in the conveying direction, reduce the waiting time of the subsequent detection process waiting for the pole piece 100 to be fed, and be beneficial to improve the overall detection efficiency of the pole piece 100.

[0243] In some embodiments, the step of obtaining the profile edge map of the pole piece 100 in the thickness direction of the pole piece 100 is arranged before the step of rotating the pole piece 100.

[0244] In this embodiment, the burr detection method can first detect the burr of the first side 101 with a smaller length, and improve the success rate of identifying the burr in the thickness direction of the pole piece 100 by arranging two third visual cameras 270 in a direction parallel to the second side 102 with a larger length and partially overlapping the shooting area before rotating the pole piece 100, thereby improving the connection efficiency of each burr detection process of the pole piece 100.

[0245] In some embodiments, the burr detection method further comprises the following steps:

[0246] According to at least one of the burr identification results of the first lateral view, the burr identification results of the second lateral view, and the burr identification results of the profile edge map, the pole piece 100 is placed on the first discharge bracket 286 or the second discharge bracket 287, which can be placed by the above-mentioned discharge suction cup 284 and the like.

[0247] In this embodiment, the burr detection method can place the pole pieces 100 with different burr identification results into the first discharge bracket 286 and the second discharge bracket 287, realize the classification of the pole pieces 100 with different burr identification results, and reduce the risk of subsequent mixing of the pole pieces 100 with different burr identification results.

[0248] The application also proposes a pole piece production method, which comprises the following steps:

[0249] The pole piece 100 is cut, which can be cut by laser processing equipment, cutting knives and the like;

[0250] For at least part of the number of pole pieces 100, the pole piece 100 is conveyed and the first edge 101 of the pole piece 100 is made to be on the side of the conveying direction, and the conveying can be specifically performed by the first conveying line 208 described above;

[0251] A first side view of the first edge 101 is obtained, and the first side view can be obtained by the first visual camera 220 described above;

[0252] The pole piece 100 is rotated so that the pole piece 100 changes from the first edge 101 on the side of the conveying direction to the second edge 102 of the pole piece 100 on the side of the conveying direction; specifically, the rotation can be performed by the rotation module 230 described above;

[0253] A second side view of the second edge 102 is obtained, and the second side view can be obtained by the second visual camera 240 described above;

[0254] The burrs in the first side view and the burrs in the second side view are identified, and the identification can be performed by the processing device 201 described above.

[0255] The pole piece production method in the technical solution of the present application can convey the pole piece 100 and make the first edge of the pole piece 100 on the side of the conveying direction, and then obtain a first side view of the first edge 101; after rotation, the second edge 102 of the pole piece 100 is on the side of the conveying direction, and then a second side view of the second edge 102 is obtained, and then the burrs in the first side view and the burrs in the second side view are identified; the pole piece production method is beneficial to improving the connection efficiency of the burr detection process of each side edge of the pole piece 100, and is beneficial to improving the overall detection speed of the side edge burrs of the pole piece 100, thereby improving the overall production efficiency of the pole piece 100 production.

[0256] With reference to FIGS. 2-11, the present application provides a burr detection device 200 for detecting burrs of a pole piece 100, the pole piece 100 comprising two oppositely arranged first edges 101 and two oppositely arranged second edges 102; the burr detection device 200 comprising a device support 207 and a first conveying line 208 and a second conveying line 209 arranged in sequence, the burr detection device 200 further comprising a first vision module, a rotating module 230, a second vision module and a processing device 201; the first conveying line 208 is provided with the first vision module on at least one side of the conveying direction, the first vision module comprising a first vision camera 220 and a first light source 221, the first vision camera 220 being arranged on the device support 207 and oppositely arranged with the first conveying line 208; the first edge 101 of the pole piece 100 is arranged to be oppositely arranged with the first vision camera 220, and the first light source 221 is arranged to emit light in a direction towards the side edge of the first conveying line 208; the rotating module 230 is slidingly connected with the device support 207, and the rotating module 230 is arranged to move from the first conveying line 208 to the second conveying line 209; the rotating module 230 comprises a rotating drive body and a rotating suction disc 231, the rotating drive body being drivingly connected with the rotating suction disc 231 to rotate the rotating suction disc 231; the second conveying line 209 is provided with the second vision module on at least one side of the conveying direction, the second vision module comprising a second vision camera 240 and a second light source 241; the second vision camera 240 is arranged on the device support 207 and oppositely arranged with the second conveying line 209; the second edge 102 of the pole piece 100 is arranged to be oppositely arranged with the second vision camera 240, and the second light source 241 is arranged to emit light in a direction towards the side edge of the second conveying line 209; the signal input end of the processing device 201 is electrically connected with the first vision camera 220 and the second vision camera 240 respectively, and the processing device 201 is arranged to identify the burrs of the pole piece 100 in the image. The first vision camera 220 and the first light source 221 are arranged in a direction perpendicular to the conveying plane of the first conveying line 208. In the direction perpendicular to the conveying plane of the first conveying line 208, the first light source 221 is arranged on both sides of the first vision camera 220. The first light source 221 comprises a first linear light source, and the light row of the first linear light source is parallel to the conveying direction of the first conveying line 208. The second vision camera 240 and the second light source 241 are arranged in a direction perpendicular to the conveying plane of the second conveying line 209. In the direction perpendicular to the conveying plane of the second conveying line 209, the second light source 241 is arranged on both sides of the second vision camera 240. The second light source 241 comprises a second linear light source, and the light row of the second linear light source is parallel to the conveying direction of the second conveying line 209.The second visual camera 240 and the second light source 241 are arranged in a direction perpendicular to the conveying plane of the second conveying line 209; the second light source 241 comprises a second linear light source, and the light rays of the second linear light source are parallel to the conveying direction of the second conveying line 209; the length of the light ray row of the first linear light source is smaller than the length of the light ray row of the second linear light source. The burr detection device 200 comprises two oppositely arranged first visual modules, and the two first visual modules are arranged on the two sides of the conveying direction of the first conveying line 208, respectively. The burr detection device 200 comprises two oppositely arranged second visual modules, and the two second visual modules are arranged on the two sides of the conveying direction of the second conveying line 209, respectively. The rotating module 230 comprises a connecting structure 232, the rotating chuck 231 is rotationally connected with the connecting structure 232, the connecting structure 232 is slidingly connected with the device support 207, and the connecting structure 232 is configured to move from the first conveying line 208 to the second conveying line 209; the first conveying line 208 is provided with the first visual module and the connecting structure 232 on the same side of the conveying direction, and the connecting structure 232 is arranged between the first conveying line 208 and the first visual module on the same side. The burr detection device 200 further comprises a first positioning camera 250 and a first driving body, the first positioning camera 250 and the first visual camera 220 are arranged in a direction surrounding the first conveying line 208; the first positioning camera 250 is oppositely arranged with the conveying plane of the first conveying line 208, and the first positioning camera 250 is connected with the device support 207; the first visual camera 220 is movably connected with the device support 207, and the first visual camera 220 is used to move in a direction parallel to the conveying plane of the first conveying line 208; the first driving body is drivingly connected with the first visual camera 220, so that the first visual camera 220 moves relative to the device support 207; the signal input end of the processing device 201 is electrically connected with the first positioning camera 250, and the signal output end of the processing device 201 is electrically connected with the first driving body; the first positioning camera 250 is used to acquire the profile of the first edge 101 of the pole piece 100, and the processing device 201 is used to drive the first driving body according to the profile of the first edge 101, so that the first driving body drives the first visual camera 220 to move relative to the pole piece 100 in a direction parallel to the profile of the first edge 101. The device support 207 is provided with a first longitudinal guide rail 251, the first longitudinal guide rail 251 extends in a direction perpendicular to the conveying plane of the first conveying line 208, and the first positioning camera 250 is movably connected with the first longitudinal guide rail 251 in the extension direction of the first longitudinal guide rail 251; the burr detection device 200 further comprises a first locking structure 252, the first locking structure 252 connects the first positioning camera 250 and the first longitudinal guide rail 251, respectively, and the first locking structure 252 is used to limit the movement between the first positioning camera 250 and the first longitudinal guide rail 251.The burr detection device 200 further comprises a second positioning camera 260 and a second driving body, the second positioning camera 260 and the second visual camera 240 are arranged along a direction surrounding the second conveying line 209; the second positioning camera 260 is arranged opposite to a conveying plane of the second conveying line 209, and the second positioning camera 260 is connected with the device support 207; the second visual camera 240 is movably connected with the device support 207, and the second visual camera 240 is used to move along a direction parallel to the conveying plane of the second conveying line 209; the second driving body is in transmission connection with the second visual camera 240, so as to move the second visual camera 240 relative to the device support 207; a signal input end of the processing device 201 is electrically connected with the second positioning camera 260, and a signal output end of the processing device 201 is electrically connected with the second driving body; the second positioning camera 260 is used to acquire a profile of the second edge 102 of the pole piece 100, and the processing device 201 is used to drive the second driving body according to the profile of the second edge 102, so as to drive the second driving body to move the second visual camera 240 relative to the pole piece 100 along a direction parallel to the profile of the second edge 102. The device support 207 is provided with a second longitudinal guide rail 261, the second longitudinal guide rail 261 extends along a direction perpendicular to the conveying plane of the second conveying line 209, and the second positioning camera 260 is movably connected with the second longitudinal guide rail 261 along an extension direction of the second longitudinal guide rail 261; the burr detection device 200 further comprises a second locking structure 262, the second locking structure 262 is connected with the second positioning camera 260 and the second longitudinal guide rail 261 respectively, and the second locking structure 262 is used to limit the movement between the second positioning camera 260 and the second longitudinal guide rail 261. The burr detection device 200 further comprises a bearing body 210 and a third visual module, the third visual module comprises a third visual camera 270 and a third light source; the first conveying line 208, the bearing body 210 and the second conveying line 209 are sequentially arranged; along the arrangement direction of the first conveying line 208, the bearing body 210 and the second conveying line 209, the third visual module is arranged between the first visual camera 220 and the second visual module; the third visual camera 270 is connected with the device support 207, and the third visual camera 270 is arranged opposite to the bearing body 210; the third visual camera 270 is used to acquire a profile edge image of the pole piece 100 in a thickness direction of the pole piece 100, the third visual camera 270 is electrically connected with a signal input end of the processing device 201, and the processing device 201 is used to identify the burr in the profile edge image. The third visual camera 270 is arranged opposite to a bearing plane of the bearing body 210; the third light source is arranged on a side of the bearing body 210 away from the third visual camera 270, and the third light source is used to emit light along a direction towards the third visual camera 270.The device support 207 is provided with a third longitudinal guide rail 271 extending in a direction perpendicular to the bearing plane of the bearing body 210; the third visual camera 270 is movably connected with the third longitudinal guide rail 271 along the extension direction of the third longitudinal guide rail 271; the burr detection device 200 further comprises a third locking structure 272 connected with the third visual camera 270 and the third longitudinal guide rail 271 respectively, and the third locking structure 272 is used to limit the movement between the third visual camera 270 and the third longitudinal guide rail 271. The length of the first side 101 is less than the length of the second side 102; the signal output end of the processing device 201 is electrically connected with the rotary driving body, and the processing device 201 is used to drive the rotary driving body to rotate the pole piece 100 after the third visual camera 270 acquires the contour edge image; the burr detection device 200 comprises two third visual modules, and the two third visual cameras 270 are arranged in parallel to the width direction of the first conveying line 208, and the shooting areas of the two third visual cameras 270 on the pole piece 100 partially overlap. The burr detection device 200 further comprises a feeding bracket 281, a controllable force applying element 204 and a height detection device 205; the power output end of the controllable force applying element 204 is connected with the feeding bracket 281, and the feeding bracket 281 is used to support the stacked pole piece 100; the height detection device 205 is used to detect the height information of the pole piece 100 located at the top, and the height detection device 205 is electrically connected with the signal input end of the processing device 201; the signal output end of the processing device 201 is electrically connected with the controllable end of the controllable force applying element 204, and the processing device 201 is used to drive the force applying element to ascend the feeding bracket 281 according to the height information and a preset corresponding relationship. The burr detection device 200 further comprises a feeding suction disc 282, a first transverse guide rail 283 and a first moving device 206; the first transverse guide rail 283 is arranged on the first conveying line 208 in a transverse direction of the conveying direction of the first conveying line 208, and the first moving device 206 is connected with the first transverse guide rail 283 and the feeding suction disc 282 respectively; the feeding suction disc 282 is used to suck the pole piece 100 on both sides of the conveying direction of the first conveying line 208. The burr detection device 200 comprises a feeding module 280, and the feeding module 280 comprises the feeding bracket 281, the controllable force applying element 204 and the height detection device 205; two feeding modules 280 are arranged on both sides of the conveying direction of the first conveying line 208 respectively, and the two feeding modules 280 are arranged correspondingly at both ends of the first transverse guide rail 283; the feeding suction disc 282 is used to suck the pole piece 100 from the two feeding modules 280.The burr detection device 200 further comprises a blanking chuck 284, a second transverse guide rail 285, a second moving device, a first blanking bracket 286 and a second blanking bracket 287. The second transverse guide rail 285 is arranged on the second conveying line 209 transversely to the conveying direction of the second conveying line 209. The second moving device is connected to the second transverse guide rail 285 and the blanking chuck 284 respectively, and the blanking chuck 284 is used for sucking the pole piece 100 on the second conveying line 209. The second moving device is electrically connected to the signal output end of the processing device 201, and the second moving device is used for placing the pole piece 100 on the first blanking bracket 286 or the second blanking bracket 287 according to at least one of the image obtained by the first vision module, the image obtained by the second vision module and the contour edge image. The second blanking bracket 287 is arranged opposite to the end of the second conveying line 209, and the second blanking bracket 287 is arranged downstream of the conveying direction of the second conveying line 209. The first blanking bracket 286 is arranged on the side of the conveying direction of the second conveying line 209. At least part of the first blanking bracket 286 is arranged upstream of the second blanking bracket 287 along the conveying direction of the second conveying line 209. The two ends of the second transverse guide rail 285 are respectively provided with support columns, and the second transverse guide rail 285 and the support columns are provided with an extension guide rail 296. The extension guide rail 296 is arranged in the conveying direction of the second conveying line 209. The second transverse guide rail 285 and the extension guide rail 296 are slidably connected in the conveying direction of the second conveying line 209. The burr detection device 200 further comprises a third moving device, and the third moving device is used for driving the second transverse guide rail 285 to move relative to the extension guide rail 296 in the conveying direction of the second conveying line 209. The controllable end of the third moving device is electrically connected to the signal output end of the processing device 201.

[0257] Referring to FIG. 12, the burr detection method is applied to the burr detection device 200, and the burr detection method comprises the following steps:

[0258] Conveying the pole piece 100 and making the first side 101 of the pole piece 100 face the side of the conveying direction;

[0259] Obtaining the first lateral view of the first side 101;

[0260] Rotating the pole piece 100, so that the pole piece 100 changes from the first side 101 facing the side of the conveying direction to the second side 102 of the pole piece 100 facing the side of the conveying direction;

[0261] Obtaining the second lateral view of the second side 102;

[0262] Identifying the burrs in the first lateral view and the burrs in the second lateral view.

[0263] Before the step of rotating the pole piece 100, the burr detection method further comprises the following steps: obtaining a first profile of the first edge 101 in the thickness direction of the pole piece 100;

[0264] The step of obtaining the first lateral view of the first edge 101 comprises:

[0265] According to the first profile, the first vision camera 220 is moved along a direction parallel to the first profile to obtain the first lateral view of the first edge 101.

[0266] After the step of rotating the pole piece 100, the burr detection method further comprises the following steps: obtaining a second profile of the second edge 102 in the thickness direction of the pole piece 100;

[0267] The step of obtaining the second lateral view of the second edge 102 comprises:

[0268] According to the second profile, the second vision camera 240 is moved along a direction parallel to the second profile to obtain the second lateral view of the second edge 102.

[0269] After the step of obtaining the first lateral view of the first edge 101 and before the step of obtaining the second lateral view of the second edge 102, the burr detection method further comprises the following steps:

[0270] Obtaining a profile edge view of the pole piece 100 in the thickness direction of the pole piece 100;

[0271] Identifying the burr in the profile edge view.

[0272] Before the step of obtaining the first lateral view of the first edge 101, the burr detection method further comprises the following steps:

[0273] Stacking the pole piece 100 on the loading bracket 281;

[0274] Detecting the height information of the pole piece 100 located at the top;

[0275] According to the height information and a preset corresponding relationship, the loading bracket 281 is raised.

[0276] Before the step of obtaining the first lateral view of the first edge 101, the burr detection method further comprises the following steps:

[0277] The loading bracket 281 is arranged on both sides of the conveying direction of the pole piece 100;

[0278] The pole piece 100 is conveyed away from the loading bracket 281 on both sides of the conveying direction of the pole piece 100, respectively.

[0279] The step of conveying the pole piece 100 away from the loading bracket 281 on both sides of the conveying direction of the pole piece 100, respectively, comprises:

[0280] After the preset number of pole pieces 100 are transported away from the feeding bracket 281 on one side of the conveying direction of the pole pieces 100, the pole pieces 100 are further transported away from another feeding bracket 281 on the other side of the conveying direction of the pole pieces 100, and the preset number is greater than or equal to 2.

[0281] The step of obtaining the profile edge map of the pole piece 100 in the thickness direction of the pole piece 100 is arranged before the step of rotating the pole piece 100.

[0282] The burr detection method further includes the following steps:

[0283] According to at least one of the burr identification result of the first lateral map, the burr identification result of the second lateral map, and the burr identification result of the profile edge map, the pole piece 100 is placed on the first discharging bracket 286 or the second discharging bracket 287.

[0284] It can be understood that, since the burr detection method and the pole piece production method adopt all the technical solutions of all the embodiments of the burr detection device 200, at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments are possessed, which will not be repeated here.

[0285] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation, direct / indirect application in other related technical fields based on the technical concept of the present application, and the content of the specification and drawings are included in the patent protection scope of the present application.

Claims

1. A burr detection device, characterized in that, The burr detection equipment is used for detecting burrs of the pole piece, the pole piece comprising two oppositely arranged first edges and two oppositely arranged second edges; The burr detection equipment comprises: An equipment support, and a first conveying line and a second conveying line arranged in sequence; A first vision module, the first conveying line being provided with the first vision module on at least one side in a conveying direction; the first vision module comprising a first vision camera and a first light source, the first vision camera being arranged on the equipment support and opposite to the first conveying line; the first edge of the pole piece being arranged opposite to the first vision camera, and the first light source being used for emitting light rays in a direction towards a side edge of the first conveying line; A rotating module, the rotating module being in sliding connection with the equipment support, and the rotating module being used for moving from the first conveying line to the second conveying line; A second vision module, the second conveying line being provided with the second vision module on at least one side in a conveying direction; the second vision module comprising a second vision camera and a second light source; the second vision camera being arranged on the equipment support and opposite to the second conveying line; the second edge of the pole piece being arranged opposite to the second vision camera, and the second light source being used for emitting light rays in a direction towards a side edge of the second conveying line; A processing device, signal input ends of the processing device being electrically connected with the first vision camera and the second vision camera respectively, and the processing device being used for identifying burrs of the pole piece in an image.

2. The burr detection apparatus of claim 1, wherein The first vision camera and the first light source are arranged in a direction perpendicular to a conveying plane of the first conveying line.

3. The burr detection apparatus of claim 2, wherein In the direction perpendicular to the conveying plane of the first conveying line, the first light source is arranged on both sides of the first vision camera.

4. The burr detection apparatus of claim 2, wherein The first light source comprises a first linear light source, and a light ray row of the first linear light source is parallel to a conveying direction of the first conveying line.

5. The burr detection apparatus of claim 1, wherein The second vision camera and the second light source are arranged in a direction perpendicular to a conveying plane of the second conveying line.

6. The burr detection apparatus of claim 5, wherein In the direction perpendicular to the conveying plane of the second conveying line, the second light source is arranged on both sides of the second vision camera.

7. The burr detection apparatus of claim 5, wherein The second light source comprises a second linear light source, and a light ray row of the second linear light source is parallel to a conveying direction of the second conveying line.

8. The burr detection apparatus of claim 4, wherein, The second vision camera and the second light source are arranged in a direction perpendicular to a conveying plane of the second conveying line; The second light source comprises a second linear light source, and a light ray row of the second linear light source is parallel to a conveying direction of the second conveying line; A length of the light ray row of the first linear light source is less than a length of a light ray row of the second linear light source.

9. The burr detection apparatus of any one of claims 1 to 8, wherein, The burr detection equipment comprises two oppositely arranged first vision modules, and the two first vision modules are arranged on both sides in a conveying direction of the first conveying line respectively.

10. The burr detection apparatus of any one of claims 1 to 8, wherein, The burr detection equipment comprises two oppositely arranged second vision modules, and the two second vision modules are arranged on both sides in a conveying direction of the second conveying line respectively.

11. The burr detection apparatus of any one of claims 1 to 8, wherein, The rotating module comprises a rotating driving body and a rotating suction disc, the rotating driving body is in transmission connection with the rotating suction disc to rotate the rotating suction disc; the rotating module comprises an adapter structure, the rotating suction disc is in rotational connection with the adapter structure, the adapter structure is in sliding connection with the equipment support, and the adapter structure is configured to move from the first conveying line to the second conveying line; the first conveying line is provided with the first visual module and the adapter structure on the same side in the conveying direction. Along the width direction of the first conveying line, the adapter structure is arranged between the first conveying line and the first visual module on the same side.

12. The burr detection apparatus of any one of claims 1 to 8, wherein, The burr detection equipment further comprises a first positioning camera and a first driving body, the first positioning camera and the first visual camera are arranged in a direction surrounding the first conveying line; the first positioning camera is arranged opposite to the conveying plane of the first conveying line, and the first positioning camera is connected with the equipment support; The first visual camera is movably connected with the equipment support, and the first visual camera is used to move in a direction parallel to the conveying plane of the first conveying line; The first driving body is in transmission connection with the first visual camera to move the first visual camera relative to the equipment support; The signal input end of the processing device is electrically connected with the first positioning camera, and the signal output end of the processing device is electrically connected with the first driving body; the first positioning camera is used to acquire the contour of the first edge of the pole piece, and the processing device is used to drive the first driving body according to the contour of the first edge, so that the first driving body drives the first visual camera to move relative to the pole piece in a direction parallel to the contour of the first edge.

13. The burr detection apparatus of claim 12, wherein, The equipment support is provided with a first longitudinal guide rail, the first longitudinal guide rail extends in a direction perpendicular to the conveying plane of the first conveying line, and the first positioning camera is movably connected with the first longitudinal guide rail in the extension direction of the first longitudinal guide rail; The burr detection equipment further comprises a first locking structure, the first locking structure is connected with the first positioning camera and the first longitudinal guide rail respectively, and the first locking structure is used to limit the movement between the first positioning camera and the first longitudinal guide rail.

14. The burr detection apparatus of any one of claims 1 to 8, wherein, The burr detection equipment further comprises a second positioning camera and a second driving body, the second positioning camera and the second visual camera are arranged in a direction surrounding the second conveying line; the second positioning camera is arranged opposite to the conveying plane of the second conveying line, and the second positioning camera is connected with the equipment support; The second visual camera is movably connected with the equipment support, and the second visual camera is used to move in a direction parallel to the conveying plane of the second conveying line; The second driving body is in transmission connection with the second visual camera to move the second visual camera relative to the equipment support; The burr detection equipment further comprises a second positioning camera and a second driving body, the second positioning camera and the second visual camera are arranged in a direction surrounding the second conveying line; the second positioning camera is arranged opposite to the conveying plane of the second conveying line, and the second positioning camera is connected with the equipment support; The second visual camera is movably connected with the equipment support, and the second visual camera is used to move in a direction parallel to the conveying plane of the second conveying line; The second driving body is in transmission connection with the second visual camera to move the second visual camera relative to the equipment support; A signal input end of the processing device is electrically connected with the second positioning camera, and a signal output end of the processing device is electrically connected with the second driving body; the second positioning camera is configured to acquire a profile of a second side of the pole piece, and the processing device is configured to drive the second driving body according to the profile of the second side, so that the second driving body drives the second visual camera to move relative to the pole piece along a direction parallel to the profile of the second side.

15. The burr detection apparatus of claim 14, wherein, The equipment support is provided with a second longitudinal guide rail extending in a direction perpendicular to a conveying plane of the second conveying line, and the second positioning camera is movably connected with the second longitudinal guide rail along an extension direction of the second longitudinal guide rail. The burr detection equipment further comprises a second locking structure connected with the second positioning camera and the second longitudinal guide rail respectively, and the second locking structure is configured to limit movement between the second positioning camera and the second longitudinal guide rail.

16. The burr detection apparatus of any one of claims 1 to 8, wherein, The burr detection equipment further comprises a carrier and a third visual module, the third visual module comprising a third visual camera and a third light source; the first conveying line, the carrier and the second conveying line are arranged in sequence; along an arrangement direction of the first conveying line, the carrier and the second conveying line, the third visual module is arranged between the first visual camera and the second visual module. The third visual camera is connected with the equipment support, and the third visual camera is arranged opposite to the carrier; the third visual camera is configured to acquire a profile edge graph of the pole piece in a thickness direction of the pole piece; the third visual camera is electrically connected with a signal input end of the processing device, and the processing device is configured to identify a burr in the profile edge graph.

17. The burr detection apparatus of claim 16, wherein The third visual camera is arranged opposite to a carrying plane of the carrier; the third light source is arranged on a side of the carrier away from the third visual camera, and the third light source is configured to emit light in a direction towards the third visual camera.

18. The burr detection apparatus of claim 17, wherein, The equipment support is provided with a third longitudinal guide rail extending in a direction perpendicular to a carrying plane of the carrier; the third visual camera is movably connected with the third longitudinal guide rail along an extension direction of the third longitudinal guide rail. The burr detection equipment further comprises a third locking structure connected with the third visual camera and the third longitudinal guide rail respectively, and the third locking structure is configured to limit movement between the third visual camera and the third longitudinal guide rail.

19. The burr detection apparatus of claim 16, wherein, A length of the first side is less than a length of the second side; a signal output end of the processing device is electrically connected with the rotary driving body, and the processing device is configured to drive the rotary driving body to rotate the pole piece after the third visual camera acquires the profile edge graph. The burr detection equipment comprises two third visual modules, and two third visual cameras are arranged in parallel to a width direction of the first conveying line, and the two third visual cameras partially overlap in a shooting area on the pole piece.

20. The burr detection apparatus of any one of claims 1 to 8, wherein, The burr detection equipment further comprises a feeding bracket, a controllable force applying member, and a height detection device, a power output end of the controllable force applying member is connected with the feeding bracket, and the feeding bracket is used for supporting the stacked pole piece; The height detection device is used for detecting height information of the pole piece located at the top, the height detection device is electrically connected with a signal input end of the processing device, a signal output end of the processing device is electrically connected with a controllable end of the controllable force applying member, and the processing device is used for driving the feeding bracket to rise according to the height information and a preset corresponding relationship.

21. The burr detection apparatus of claim 20, wherein, The burr detection equipment further comprises a feeding bracket, a controllable force applying member, and a height detection device, a power output end of the controllable force applying member is connected with the feeding bracket, and the feeding bracket is used for supporting the stacked pole piece; 22. The burr detection apparatus of claim 21, wherein The burr detection equipment further comprises a feeding bracket, a controllable force applying member, and a height detection device, a power output end of the controllable force applying member is connected with the feeding bracket, and the feeding bracket is used for supporting the stacked pole piece; 23. The burr detection apparatus of claim 17, wherein, The burr detection equipment further comprises a feeding bracket, a controllable force applying member, and a height detection device, a power output end of the controllable force applying member is connected with the feeding bracket, and the feeding bracket is used for supporting the stacked pole piece; The burr detection equipment further comprises a feeding bracket, a controllable force applying member, and a height detection device, a power output end of the controllable force applying member is connected with the feeding bracket, and the feeding bracket is used for supporting the stacked pole piece; 24. The burr detection apparatus of claim 23, wherein, The second moving device is electrically connected with the signal output end of the processing device, and the second moving device is used for placing the pole piece on the first discharging bracket or the second discharging bracket according to at least one of the image acquired by the first visual module, the image acquired by the second visual module, and the contour edge image. The second discharging bracket is arranged opposite to the end of the second conveying line, the second discharging bracket is arranged downstream of the conveying direction of the second conveying line, and the first discharging bracket is arranged on the side of the conveying direction of the second conveying line; Two ends of the second transverse guide rail are respectively provided with support columns, and an extension guide rail is arranged between the second transverse guide rail and the support column; the extension guide rail is arranged in extension along the conveying direction of the second conveying line; in the conveying direction of the second conveying line, the second transverse guide rail is in sliding connection with the extension guide rail; The burr detection equipment further comprises a third moving device, the third moving device is used for driving the second transverse guide rail to move relative to the extension guide rail in the conveying direction of the second conveying line; and a controllable end of the third moving device is electrically connected with the signal output end of the processing device.

25. A method of detecting a burr, characterized by The burr detection method is applied to the burr detection device of any one of claims 1 to 24, and comprises the following steps: conveying the pole piece and making a first edge of the pole piece face a side of the conveying direction; obtaining a first lateral view of the first edge; rotating the pole piece to change the first edge of the pole piece to face the side of the conveying direction to a second edge of the pole piece to face the side of the conveying direction; obtaining a second lateral view of the second edge; identifying burrs in the first lateral view and burrs in the second lateral view.

26. The burr detection method of claim 25, wherein, Before the step of rotating the pole piece, the burr detection method further comprises the following steps: obtaining a first profile of the first edge in the thickness direction of the pole piece; The step of obtaining the first lateral view of the first edge comprises: According to the first profile, the first visual camera is moved along a direction parallel to the first profile to obtain the first lateral view of the first edge.

27. The burr detection method of claim 25, wherein, After the step of rotating the pole piece, the burr detection method further comprises the following steps: obtaining a second profile of the second edge in the thickness direction of the pole piece; The step of obtaining the second lateral view of the second edge comprises: According to the second profile, the second visual camera is moved along a direction parallel to the second profile to obtain the second lateral view of the second edge.

28. The burr detection method of claim 25, wherein, After the step of obtaining the first lateral view of the first edge and before the step of obtaining the second lateral view of the second edge, the burr detection method further comprises the following steps: obtaining a profile edge view of the pole piece in the thickness direction of the pole piece; identifying burrs in the profile edge view.

29. The burr detection method of claim 25, wherein, Before the step of obtaining the first lateral view of the first edge, the burr detection method further comprises the following steps: stacking the pole piece on a feeding cradle; detecting height information of the pole piece located at the top; According to the height information and a preset correspondence, the feeding cradle is raised.

30. The burr detection method of claim 29, wherein, Before the step of obtaining the first lateral view of the first edge, the burr detection method further comprises the following steps: The feeding cradle is arranged on both sides of the conveying direction of the pole piece; The pole piece is transported away from the feeding cradle on both sides of the conveying direction of the pole piece, respectively.

31. The burr detection method of claim 30, wherein, The step of transporting the pole piece away from the feeding cradle on both sides of the conveying direction of the pole piece, respectively, comprises: After a preset number of pole pieces are transported away from the feeding cradle on one side of the conveying direction of the pole piece, the pole pieces are transported away from another feeding cradle on the other side of the conveying direction of the pole piece, and the preset number is greater than or equal to 2.

32. The burr detection method of claim 28, wherein, The step of obtaining the profile edge view of the pole piece in the thickness direction of the pole piece is arranged before the step of rotating the pole piece.

33. The burr detection method of claim 28, wherein, The burr detection method further comprises the following steps: According to at least one of the burr identification result of the first lateral view, the burr identification result of the second lateral view, and the burr identification result of the profile edge view, the pole piece is placed on a first unloading cradle or a second unloading cradle.

34. A method of producing a pole piece, characterized by, The pole piece production method comprises the following steps: slitting to form a pole piece; For at least some of the pole pieces, conveying the pole pieces with a first edge of the pole pieces facing aside from a conveying direction; acquiring a first side view of the first edge; rotating the pole pieces so that the pole pieces change from a first edge facing aside from the conveying direction to a second edge of the pole pieces facing aside from the conveying direction; acquiring a second side view of the second edge; identifying burrs in the first side view and burrs in the second side view.

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