Pole piece detection device and pole piece splitting machine

Abstract

The utility model provides a pole piece detection device and a pole piece splitting machine, the pole piece detection device comprises a support, detection mechanisms and a driving mechanism, at least one detection mechanism is arranged on the support, the detection mechanism has a working position and an avoiding position, and the detection mechanism comprises a light source structure, a deflection structure and an image imaging structure; the light source structure is used for emitting light to the pole piece slitting end face, the deflection structure can deflect the light reflected by the pole piece slitting end face at the light source structure to set the included angle so that the deflected light can be transmitted to the image imaging structure, the pole piece detection device is compact in size and convenient to operate, space is saved, and miniaturization of the pole piece detection device is achieved.

Description

Technical Field

[0001] The present application belongs to the field of detection technology. Specifically, the present application relates to a pole piece detection device and a pole piece slitting machine. Background Art

[0002] During the electrode slitting process, burrs often form on the electrode edges. These burrs not only affect the integrity of the battery's internal structure but can also become a source of safety hazards such as battery short circuits and thermal runaway. Therefore, it is necessary to detect burrs on the electrode end faces.

[0003] In the existing technology, the detection mechanism for burrs on the end face of the pole piece has problems such as large size, complex installation and inconvenient operation. It is difficult to effectively integrate it into the automated production line, resulting in limited production efficiency. Summary of the Invention

[0004] One purpose of the embodiments of the present application is to provide a new technical solution for a pole piece detection device and a pole piece slitting machine.

[0005] According to a first aspect of an embodiment of the present application, a pole piece detection device is provided, comprising:

[0006] Bracket;

[0007] A detection mechanism, at least one of which is disposed on the bracket, the detection mechanism having a working position and an avoidance position, the detection mechanism comprising a light source structure, a deflection structure, and an image imaging structure, the light source structure being used to emit light toward the pole piece cutting end face, the deflection structure being capable of deflecting the light reflected from the pole piece cutting end face at the light source structure at a set angle to the image imaging structure, the image imaging structure being used to present a burr image of the pole piece cutting end face;

[0008] A driving mechanism is connected to the bracket and can drive the bracket to move so that the detection mechanism switches between a working position and an avoidance position.

[0009] Optionally, the light source structure emits light toward the pole piece cutting end surface along a first direction, and the image imaging structure receives light reflected from the pole piece cutting end surface along a second direction, and the second direction is perpendicular to the first direction.

[0010] Optionally, the light source structure includes a ring light source, and the image imaging structure includes a detection camera;

[0011] The central axis of the annular light source and the optical axis of the detection camera intersect at the deflection structure.

[0012] Optionally, the detection mechanism includes a detection frame, and the light source structure, the deflection structure and the image imaging structure are all connected to the detection frame;

[0013] The detection mechanism includes an adjustment structure, which is movably connected to the detection frame via a connection structure and has an extended position and a retracted position;

[0014] When the adjustment structure is in the extended position, the adjustment structure is used to penetrate the pole piece and detect the offset position of the pole piece, and the image imaging structure can adjust the focal length according to the offset position;

[0015] When the adjustment structure is in the retracted position, the adjustment structure is disengaged from the pole piece.

[0016] Optionally, the adjustment structure includes a correction sensor and a matching part, the correction sensor is movably connected to the detection frame along the first direction through the connecting structure and is used to detect the offset position of the pole piece, and the matching part is connected to the correction sensor and is used to penetrate the pole piece.

[0017] Optionally,

[0018] The deflection structure includes a mirror frame and a prism, the mirror frame is connected to the detection frame and forms a deflection space, the prism is arranged in the deflection space, the light source structure is connected to the detection frame and is opposite to the reflective surface of the prism along a first direction, and the image imaging structure is movably connected to the detection frame and is opposite to the reflective surface of the prism along a second direction.

[0019] Optionally, the deflection structure includes an adjusting member, and the prism is movably mounted in the frame via the adjusting member.

[0020] Optionally, the detection frame has a connecting block, the bracket has a sliding rod, and the connecting block and the sliding rod are slidably matched.

[0021] Optionally, the driving mechanism includes a driving motor, a screw and a sliding seat, the screw is connected to the output end of the driving motor, and the sliding seat is fixed to the bracket and threadedly connected to the screw;

[0022] When the driving motor drives the screw rod to rotate, the sliding seat and the bracket can be lifted and lowered together, so that the detection mechanism can be switched between the working position and the avoidance position.

[0023] According to a second aspect of an embodiment of the present application, a pole piece slitting machine is provided, which includes the pole piece detection device described in the first aspect.

[0024] One of the technical effects of this application is:

[0025] An embodiment of the present application provides a pole piece detection device, which includes a bracket, a detection mechanism and a driving mechanism. At least one detection mechanism is arranged on the bracket. The detection mechanism has a working position and an avoidance position. The detection mechanism includes a light source structure, a deflection structure and an image imaging structure. The light source structure is used to emit light to the pole piece cutting end face. The deflection structure can deflect the light reflected by the pole piece cutting end face at the light source structure to a set angle so that the deflected light is transmitted to the image imaging structure. The pole piece detection device is compact in size, easy to operate and saves space, thereby realizing the miniaturization of the pole piece detection device.

[0026] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and, together with the description, serve to explain the principles of the application.

[0028] Figure 1 A front view of a pole piece detection device provided in one embodiment of the present application;

[0029] Figure 2 A side view of a pole piece detection device provided in one embodiment of the present application;

[0030] Figure 3 A schematic diagram of a detection mechanism of a pole piece detection device provided in one embodiment of the present application;

[0031] Figure 4 A schematic diagram of a detection mechanism of a pole piece detection device provided by one embodiment of the present application switching between a working position and a avoidance position;

[0032] Figure 5 A schematic diagram of switching between an extended position and a retracted position of an adjustment structure of a pole piece detection device provided by one embodiment of the present application;

[0033] Figure 6 for Figure 5 A partial enlarged view of the .

[0034] Among them: 1. bracket; 11. sliding rod; 12. connecting rod; 2. detection mechanism; 21. detection frame; 211. vertical plate; 2111. connecting block; 2112. locking part; 212. horizontal plate; 22. light source structure; 23. deflection structure; 231. mirror frame; 232. prism; 233. adjustment part; 24. image imaging structure; 25. adjustment structure; 251. correction sensor; 252. matching part; 26. connection structure; 3. driving mechanism; 31. driving motor; 32. screw; 33. sliding seat; 34. coupling; 35. photoelectric sensor. DETAILED DESCRIPTION

[0035] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0036] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be understood as limiting the present application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0037] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly refer to one or more of the features. Throughout the description of this application, unless otherwise specified, "plurality" means two or more. Furthermore, "and / or" in the specification and claims refers to at least one of the connected entities, and the character " / " generally indicates an "or" relationship between the connected entities.

[0038] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0039] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0040] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0041] An embodiment of the present application provides a pole piece detection device for detecting burrs on the cut end face of the pole piece; the light source structure and the image imaging structure of the pole piece detection device are arranged at an angle. After the light source structure illuminates the pole piece at the cut end face of the pole piece, the image at the cut end face of the pole piece can be deflected to the image imaging structure through the deflection structure, thereby realizing a three-dimensional setting of the pole piece detection device and achieving the purpose of miniaturization of the pole piece detection device.

[0042] Reference Figure 1 , an embodiment of the present application provides a pole piece detection device, the pole piece detection device comprising:

[0043] Bracket 1;

[0044] Detection mechanism 2, at least one detection mechanism 2 is set on the bracket 1, the detection mechanism 2 has a working position and an avoidance position, the detection mechanism 2 includes a light source structure 22, a deflection structure 23 and an image imaging structure 24, the light source structure 22 is used to emit light to the pole piece cutting end face to illuminate the pole piece cutting end face, the deflection structure 23 can deflect the light reflected from the pole piece cutting end face at the light source structure 22 to the image imaging structure 24 at a set angle, the light path diagram is as follows Figure 5 and Figure 6 As shown, the image imaging structure 24 is used to present the burr image of the electrode cutting end surface;

[0045] The driving mechanism 3 is connected to the bracket 1 and is used to drive the bracket 1 to move so that the detection mechanism 2 switches between the working position and the avoidance position.

[0046] During the battery production process, electrode cutting is a crucial step in ensuring consistent performance across each battery cell. High-precision electrode cutting ensures that each electrode is the same size and shape, ensuring consistent performance and lifespan across the battery cells.

[0047] After the electrode is cut, burrs are easily formed on the cut end surface of the electrode, and the size of the burrs will affect the safety of the finished battery; therefore, it is necessary to inspect the cut end surface of the electrode to eliminate electrodes with safety hazards.

[0048] In this embodiment, the bracket 1 serves as a supporting structure for carrying one or more detection mechanisms 2 , and can ensure the stability of the detection mechanism 2 .

[0049] After the pole piece is cut, it will be sent to the detection mechanism 2. The cutting end face of the pole piece is close to the light source structure 22. A light path is formed between the light source structure 22 and the image imaging structure 24, and the light path is deflected at a set angle at the deflection structure 23. The range of the set angle can be 30°-150°, for example, the setting angle is 60°, 90° or 120°, that is, the light reflected from the cutting end face of the pole piece can be deflected by 60°, 90° or 120°, so that when the light reflected at the cutting end face of the pole piece is imaged by the image imaging structure 24, the light source structure 22 and the image imaging structure 24 can be arranged at a relative angle to realize the three-dimensional setting of the pole piece detection device and achieve the purpose of miniaturization of the pole piece detection device.

[0050] In this embodiment, the driving mechanism 3 can drive the bracket 1 along Figure 1 When the bracket 1 moves laterally or longitudinally, it can drive the detection mechanism 2 to move laterally or longitudinally, so as to realize the switching of the detection mechanism 2 between the working position and the avoidance position.

[0051] In one embodiment, see Figure 4 , the driving mechanism 3 can drive the bracket 1 along Figure 4 When the electrode detection device does not need to detect the electrode at the cut end face, the detection mechanism 2 is in the Figure 4 When the electrode detection device detects the cutting end face of the electrode, the bracket 1 can drive the detection mechanism 2 to move downward when it moves longitudinally, so as to realize the detection mechanism 2 from Figure 4 Switching from the avoidance position to the working position.

[0052] When the pole piece detection device detects the cutting end face of the pole piece, the driving mechanism 3 drives the bracket 1 to move, and the detection mechanism 2 moves to the working position driven by the bracket 1. The cutting end face of the pole piece is close to the light source structure 22, and the image imaging structure 24 can present the burrs of the cutting end face of the pole piece through the deflection structure 23. When the burrs of the cutting end face of the pole piece presented by the image imaging structure 24 meet the standards, the pole piece can be used as a qualified pole piece; when the burrs of the cutting end face of the pole piece presented by the image imaging structure 24 do not meet the standards, the pole piece can be used as a discarded pole piece, or the pole piece can be processed again to obtain a qualified pole piece.

[0053] When the electrode detection device completes the detection of the slit end face of the electrode, the driving mechanism 3 drives the bracket 1 to move, and the detection mechanism 2 moves to the avoidance position under the drive of the bracket 1 to facilitate the continued transportation of the electrode after the detection is completed.

[0054] In some embodiments, multiple detection mechanisms 2 are arranged at intervals on the bracket 1, and the multiple detection mechanisms 2 perform detection on the cut end surfaces of multiple pole pieces, so that the pole piece detection device is suitable for synchronous detection of multiple pole pieces.

[0055] In a specific embodiment, the slitting equipment divides the electrode into four strips, and four detection mechanisms 2 are evenly spaced on the bracket 1 of the electrode detection device, that is, a set of electrode detection devices can be arranged to detect the four electrode strips. The four detection mechanisms 2 of the electrode detection device correspond to detecting the slitting end faces of the four electrode strips. The light source structure 22 of each detection mechanism 2 is close to the slitting end face of a electrode strip, and the image imaging structure 24 can present the burrs of the slitting end face of the electrode strip through the deflection structure 23, so as to improve the efficiency of detecting the slitting side face of the electrode strip after slitting.

[0056] The pole piece detection device provided in the embodiment of the present application includes a bracket 1, a detection mechanism 2 and a driving mechanism 3. At least one detection mechanism 2 is arranged on the bracket 1. The detection mechanism 2 has a working position and an avoidance position. The detection mechanism 2 includes a light source structure 22, a deflection structure 23 and an image imaging structure 24. The light source structure 22 is used to emit light to the pole piece cutting end face. The deflection structure 23 can deflect the light reflected by the pole piece cutting end face at the light source structure 22 to a set angle so that the deflected light is transmitted to the image imaging structure 24. The image imaging structure 24 is used to present a burr image of the pole piece cutting end face. The pole piece detection device is compact in size, easy to operate and saves space, thereby realizing the miniaturization of the pole piece detection device and improving the detection efficiency of the pole piece detection device in the production line.

[0057] In some embodiments, see Figure 1 The light source structure 22 emits light along a first direction toward the pole piece cutting end surface, and the image imaging structure 24 receives the light reflected from the pole piece cutting end surface along a second direction, and the second direction is perpendicular to the first direction.

[0058] In this embodiment, the first direction can be Figure 1 The second direction can be Figure 1In the vertical direction, after the light source structure 22 emits light along the first direction to the pole piece cutting end face, the pole piece cutting end face can be illuminated; and then the deflection structure 23 deflects the reflected light of the pole piece cutting end face by 90°, so that the light of the pole piece cutting end face is deflected from the horizontal to the vertical, while ensuring that the image imaging structure 24 images the pole piece cutting end face, it can facilitate the three-dimensional arrangement of the light source structure 22 and the image imaging structure 24, avoid the light source structure 22 and the image imaging structure 24 being arranged in a straight line and occupying space, and improve the structural compactness of the pole piece detection device.

[0059] In some embodiments, see Figure 1 and Figure 2 , the light source structure 22 includes a ring light source, and the image imaging structure 24 includes a detection camera;

[0060] The central axis of the annular light source and the camera optical axis of the image imaging structure 24 intersect at the deflection structure 23 .

[0061] In this embodiment, when the pole piece detection device detects the cutting end face of the pole piece, the cutting end face of the pole piece is close to the annular light source, and the linear light generated by the annular light source can illuminate the cutting end face of the pole piece. Since the central axis of the annular light source and the camera optical axis of the image imaging structure 24 intersect at the deflection structure 23, a deflected light path is formed between the annular light source and the image imaging structure 24, which facilitates the image imaging structure 24 to cooperate with the annular light source to sample the cutting end face on the pole piece, thereby improving the clarity and detection accuracy of the cutting end face of the pole piece.

[0062] In one embodiment, see Figure 1 The cut pole piece passes from the right side of the annular light source, and the annular light source illuminates the cut end face of the pole piece after the cut. The burrs at the cut end face of the pole piece will form scattering. The image imaging structure 24 collects the image at the cut end face, and it can be judged whether there are burrs at the cut end face of the pole piece, and whether the burrs affect the normal use of the pole piece, specifically including the position and size of the burrs at the cut end face of the pole piece, to ensure the effective use of the pole piece after cutting.

[0063] In some embodiments, see Figure 1 、 Figure 5 and Figure 6 The detection mechanism 2 includes a detection frame 21, a light source structure 22, a deflection structure 23 and the image imaging structure 24 are all connected to the detection frame 21;

[0064] The detection mechanism 2 includes an adjustment structure 25 , which is movably connected to the detection frame 21 via a connection structure 26 and has an extended position and a retracted position;

[0065] When the adjustment structure 25 is in the extended position, the adjustment structure 25 is used to penetrate the pole piece and detect the offset position of the pole piece, and the image imaging structure 24 can adjust the focal length according to the offset position;

[0066] When the adjustment structure 25 is in the retracted position, the adjustment structure 25 is disengaged from the pole piece.

[0067] In this embodiment, the light source structure 22 , the deflection structure 23 and the image imaging structure 24 are all connected to the detection frame 21 and the deflection structure 23 is located between the light source structure 22 and the image imaging structure 24 .

[0068] When the electrode detection device detects the cut end face of the electrode, the electrode is supported and transported by the electrode roller, and the supported electrode can pass through the adjustment structure 25. The bracket 1 can be driven to move by the driving mechanism 3, and the detection mechanism 2 moves to the working position under the drive of the bracket 1; then the adjustment structure 25 is moved on the detection frame 21 by the electric or pneumatic connection structure 26, so that the adjustment structure 25 moves laterally in the direction close to the electrode to the position as shown in FIG. Figure 5 In the extended position shown, the adjustment structure 25 is used to detect the offset position of the pole piece. The detection camera of the image imaging structure 24 can adjust the focal length according to the offset position to achieve fine-tuning of the automatic focus of the detection camera, avoid the defocusing of the detection camera caused by the offset of the pole piece, and ensure the accuracy of the image imaging structure 24 in presenting the burrs on the end face of the pole piece.

[0069] Moreover, when the pole piece is offset, the adjustment structure 25 can track the movement of the pole piece, avoiding the problem of pole piece breakage caused by collision with the detection mechanism 2 after the pole piece is offset, and ensuring the structural integrity of the pole piece after cutting during detection.

[0070] When the electrode detection device completes the detection of the electrode segmented end face, the adjustment structure 25 is moved on the detection frame 21 by the electric or pneumatic connection structure 26, so that the adjustment structure 25 moves laterally in the direction away from the electrode to a position as shown in FIG. Figure 5 The retracted position shown is that it is out of the adjustment structure 25 ; then the driving mechanism 3 drives the bracket 1 to move, and the detection mechanism 2 moves to the avoidance position driven by the bracket 1 .

[0071] In some embodiments, see Figure 2 and Figure 3 The adjustment structure 25 includes a correction sensor 251 and a matching part 252. The correction sensor 251 is movably connected to the detection frame 21 along the first direction through the connecting structure 26 and is used to detect the offset position of the pole piece. The matching part 252 is connected to the correction sensor 251 and is used to penetrate the pole piece.

[0072] In this embodiment, the connecting structure 26 can drive the correction sensor 251 and the matching part 252 to move together along the first direction, and the correction sensor 251 and the matching part 252 are opposite to each other up and down; when the correction sensor 251 moves to the extended position, the cut pole piece passes through the groove in the matching part 252, ensuring the position stability of the pole piece during detection; at the same time, the correction sensor 251 and the matching part 252 are opposite to each other up and down and can detect the edge position of the pole piece, so that the correction sensor 251 can perform position detection on the cut end face of the pole piece to realize the detection of the pole piece offset position; and the correction sensor 251 can send information about the pole piece offset position to the detection camera, and then the detection camera performs real-time zooming action according to the feedback offset position information, so as to complete the accurate detection of burrs at the cut end face of the pole piece through the detection camera; then the correction sensor 251 and the matching part 252 move together in the direction away from the pole piece, and the pole piece is disengaged from the groove in the matching part 252 to ensure the transmission of the pole piece.

[0073] In some embodiments, see Figure 2 and Figure 3 The deflection structure 23 includes a mirror frame 231 and a prism 232. The mirror frame 231 is connected to the detection frame 21 and forms a deflection space. The prism 232 is arranged in the deflection space. The light source structure 22 is connected to the detection frame 21 and is opposite to the reflective surface of the prism 232 along a first direction. The image imaging structure 24 is movably connected to the detection frame 21 and is opposite to the reflective surface of the prism 232 along a second direction.

[0074] In this embodiment, the detection frame 21 may include a vertical plate 211 and a horizontal plate 212 , and the horizontal plate 212 is connected to the bracket 1 through the vertical plate 211 ;

[0075] The deflection structure 23 includes a mirror frame 231 and a prism 232. The mirror frame 231 is connected to the horizontal plate 212 and forms a deflection space. The prism 232 is arranged in the deflection space. The light source structure 22 is connected to the horizontal plate 212 and is opposite to the reflective surface of the prism 232 along a first direction; at the same time, the image imaging structure 24 is movably connected to the vertical plate 211 and is opposite to the reflective surface of the prism 232 along a second direction.

[0076] In this embodiment, the light source structure 22 has a hollow area connected to the deflection space, the image imaging structure 24 extends into the deflection space, or the image imaging structure 24 is located outside the deflection space but can obtain images from the deflection space, so as to ensure the smoothness of the image transmission path from the light source structure 22, the deflection structure 23 to the image imaging structure 24.

[0077] In this embodiment, the image imaging structure 24 moves along the second direction on the vertical plate 211 and can remain opposite to the reflective surface of the prism 232. While ensuring that the image imaging structure 24 obtains the burr image of the pole piece cutting end face, the focus adjustment of the detection camera in the image imaging structure 24 can be realized.

[0078] In some embodiments, see Figure 2 and Figure 3 The deflection structure 23 includes an adjusting member 233 , and the prism 232 is movably mounted in the frame 231 through the adjusting member 233 .

[0079] In the above embodiment, in order to ensure that the light source structure 22 is opposite to the reflective surface of the prism 232, and the image imaging structure 24 is opposite to the reflective surface of the prism 232, the deflection structure 23 can deflect the light reflected by the pole piece cutting end face at the light source structure 22 to the set angle to the image imaging structure 24, and the prism 232 can be movably installed in the frame 231; for example, the prism 232 can be installed in the frame 231 by means of a bolt or an adjustment member 233 with a snap-fit ​​structure.

[0080] When the angle of the prism 232 needs to be adjusted, the locking of the prism 232 by the adjusting member 233 can be released first, and then the angle of the prism 232 can be adjusted, and then the prism 232 can be locked in the frame 231 by the adjusting member 233 to ensure that the deflection structure 23 can deflect the light reflected by the pole piece cutting end face at the light source structure 22 at the set angle and transmit it to the image imaging structure 24; and when the relative positions of the light source structure 22 and the image imaging structure 24 are adjusted, the matching of the light source structure 22 and the prism 232 and the image imaging structure 24 and the prism 232 can be maintained only by adjusting the angle of the prism 232.

[0081] In some embodiments, see Figure 1 and Figure 3 The detection frame 21 has a connecting block 2111 , and the bracket 1 has a sliding rod 11 , and the connecting block 2111 is slidably matched with the sliding rod 11 .

[0082] In the above embodiment, the end of the vertical plate 211 away from the horizontal plate 212 has a connecting block 2111 , and the bracket 1 has a sliding rod 11 , and the connecting block 2111 is in sliding engagement with the sliding rod 11 .

[0083] In the above embodiment, the slide bar 11 can be moved along Figure 1 The lateral extension in the middle, the sliding cooperation between the connecting block 2111 and the slide bar 11 can realize the lateral sliding of the vertical plate 211 along the slide bar 11, thereby driving the lateral movement of the entire detection mechanism 2, realizing the detection mechanism 2 approaching or moving away from the pole piece, and ensuring the efficiency of the image imaging structure 24 in imaging the pole piece cutting end face.

[0084] In one embodiment, see Figure 3 The end of the vertical plate 211 away from the horizontal plate 212 has a locking portion 2112, and the locking portion 2112 is used to lock the connecting block 2111 on the sliding rod 11; for example, when adjusting the vertical plate 211 to slide along the sliding rod 11, the locking portion 2112 is first used to release the locking of the connecting block 2111, and after the vertical plate 211 slides into place along the sliding rod 11, the locking portion 2112 is used to lock the connecting block 2111 on the sliding rod 11, which facilitates the flexible movement of the detection mechanism 2 while ensuring the setting stability of the detection mechanism 2.

[0085] In some embodiments, see Figure 1 The driving mechanism 3 includes a driving motor 31, a screw rod 32 and a sliding seat 33. The screw rod 32 is connected to the output end of the driving motor 31. The sliding seat 33 is fixed to the bracket 1 through the connecting rod 12 and is threadedly connected to the screw rod 32. When the driving motor 31 drives the screw rod 32 to rotate, the sliding seat 33 can be driven to move up and down, and then the bracket 1 can be driven to move up and down through the connecting rod 12.

[0086] When the driving motor 31 drives the screw rod 32 to rotate, the sliding seat 33 and the bracket 1 can be lifted and lowered together, so that the detection mechanism 2 can be switched between the working position and the avoidance position.

[0087] In the above embodiment, the driving mechanism 3 includes a fixed motor base, and the driving motor 31 is arranged on the motor base to ensure the setting stability of the driving motor 31; in addition, the driving mechanism 3 may include a coupling 34 and a photoelectric sensor 35, and the coupling 34 is arranged between the screw rod 32 and the output end of the driving motor 31 to flexibly adjust the rotation rate of the screw rod 32.

[0088] In one embodiment, the drive mechanism 3 includes a photoelectric sensor 35 for detecting the lifting height. When the electrode detection device is not required to detect the cut end surface of the electrode, the drive motor 31 is operated, and the detection mechanism 2 is lifted to the avoidance position under the action of the drive motor 31. When the electrode detection device is required to detect the cut end surface of the electrode, the drive motor 31 is operated, and the detection mechanism 2 is lowered to the working position under the action of the drive motor 31, so that the imaging structure 24 can present the burrs on the cut end surface of the electrode.

[0089] An embodiment of the present application further provides a pole piece slitting machine, which includes the pole piece detection device mentioned above.

[0090] In the above embodiment, the pole piece detection device of the pole piece slitting machine deflects the light reflected from the pole piece slitting end face at the light source structure 22 at a set angle through the deflection structure 23, so that the deflected light is transmitted to the image imaging structure 24. The image imaging structure 24 is used to present the burr image of the pole piece slitting end face. The pole piece detection device is compact in size, easy to operate and saves space, thereby realizing the miniaturization of the pole piece detection device and improving the detection efficiency of the pole piece detection device in the production line.

[0091] Although some specific embodiments of the present application have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A pole piece detection device, characterized in that: include: Bracket (1); A detection mechanism (2), at least one of the detection mechanisms (2) is arranged on the bracket (1), the detection mechanism (2) has a working position and an avoidance position, the detection mechanism (2) comprises a light source structure (22), a deflection structure (23) and an image imaging structure (24), the light source structure (22) is used to emit light to the pole piece cutting end face, the deflection structure (23) can deflect the light reflected by the pole piece cutting end face at the light source structure (22) to the image imaging structure (24) at a set angle, and the image imaging structure (24) is used to present a burr image of the pole piece cutting end face; A driving mechanism (3) is connected to the bracket (1) and is capable of driving the bracket (1) to move so as to switch the detection mechanism (2) between a working position and an avoidance position.

2. The pole piece detection device according to claim 1, characterized in that: The light source structure (22) emits light toward the pole piece cutting end face along a first direction, and the image imaging structure (24) receives light reflected from the pole piece cutting end face along a second direction, wherein the second direction is perpendicular to the first direction.

3. The pole piece detection device according to claim 1, characterized in that: The light source structure (22) includes a ring light source, and the image imaging structure (24) includes a detection camera; The central axis of the annular light source and the optical axis of the detection camera intersect at the deflection structure (23).

4. The pole piece detection device according to claim 1, characterized in that: The detection mechanism (2) comprises a detection frame (21), and the light source structure (22), the deflection structure (23) and the image formation structure (24) are all connected to the detection frame (21); The detection mechanism (2) includes an adjustment structure (25), which is movably connected to the detection frame (21) via a connection structure (26) and has an extended position and a retracted position; When the adjustment structure (25) is in the extended position, the adjustment structure (25) is used to penetrate the pole piece and detect the offset position of the pole piece, and the image imaging structure (24) can adjust the focal length according to the offset position; When the adjustment structure (25) is in the retracted position, the adjustment structure (25) is separated from the pole piece.

5. The pole piece detection device according to claim 4, characterized in that: The adjustment structure (25) comprises a deflection correction sensor (251) and a matching portion (252); the deflection correction sensor (251) is movably connected to the detection frame (21) along a first direction via a connection structure (26) and is used to detect the offset position of the pole piece; the matching portion (252) is connected to the deflection correction sensor (251) and is used to penetrate the pole piece.

6. The pole piece detection device according to claim 4, characterized in that: The deflection structure (23) comprises a mirror frame (231) and a prism (232); the mirror frame (231) is connected to the detection frame (21) and forms a deflection space; the prism (232) is arranged in the deflection space; the light source structure (22) is connected to the detection frame (21) and is opposite to the reflection surface of the prism (232) along a first direction; and the image forming structure (24) is movably connected to the detection frame (21) and is opposite to the reflection surface of the prism (232) along a second direction.

7. The pole piece detection device according to claim 6, characterized in that: The deflection structure (23) includes an adjusting member (233), and the prism (232) is movably mounted in the mirror frame (231) via the adjusting member (233).

8. The pole piece detection device according to claim 6, characterized in that: The detection frame (21) is provided with a connecting block (2111), the bracket (1) is provided with a sliding rod (11), and the connecting block (2111) is in sliding engagement with the sliding rod (11).

9. The pole piece detection device according to claim 1, characterized in that: The driving mechanism (3) comprises a driving motor (31), a screw rod (32) and a sliding seat (33), wherein the screw rod (32) is connected to the output end of the driving motor (31), and the sliding seat (33) is fixed to the bracket (1) and is threadedly connected to the screw rod (32); When the drive motor (31) drives the screw rod (32) to rotate, the sliding seat (33) and the bracket (1) can be lifted and lowered together, so that the detection mechanism (2) can be switched between the working position and the avoidance position.

10. A pole piece cutting machine, characterized in that: The invention comprises a pole piece detection device as described in any one of claims 1 to 9.

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