Lithium battery pole piece debugging system and debugging method

Abstract

The invention discloses a lithium battery pole piece debugging system and a debugging method. The system comprises a control unit, a plurality of image acquisition modules, a light source module, a conveying mechanism, a pole piece collinear target and a lithium battery pole piece, the light source module is used for emitting a ray light source, and the image acquisition module is used for acquiring image information reflected from a pole piece collinear target or a lithium battery pole piece; the control unit is used for receiving the image information and adjusting the positions of the light source module and the image acquisition modules after initialization and collinearity are completed according to the brightness debugging requirement of the lithium battery pole piece, so that the gray value of the image information is within a preset gray value range, and the brightness debugging of the lithium battery pole piece is realized; and the control unit is also used for receiving the image information, and performing distance measurement simulation on the image information after distortion correction of each image acquisition module is completed according to a distance measurement requirement of the lithium battery pole piece, so that a distance measurement value of the image information is within a preset distance measurement error range of a distance measurement design value. By using the system, the debugging accuracy is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery pole pieces, and in particular to a lithium battery pole piece debugging system and a debugging method. Background Art

[0002] With the development of the new energy vehicle industry, the market demand for lithium batteries and quality requirements are getting higher and higher. The manufacturing process of lithium batteries can be divided into the front-end process (electrode production), the middle-end process (cell synthesis) and the back-end process (formation packaging). The production quality of lithium battery pole pieces has a profound impact on the consistency, safety and life cycle of the finished lithium battery. Therefore, it is of great value to accurately grasp the dimensional accuracy and appearance of the pole piece production process. In the actual detection process of lithium battery pole pieces, the assembly quality of the detection system not only affects the imaging quality and the accuracy and detection effect of the detection system, but also affects the production progress of the pole pieces.

[0003] The current method for adjusting lithium battery pole pieces is usually based on the adjustment method of the multi-camera visual inspection system. This method requires the use of designed adjustment tools to adjust the inspection system to the target imaging state according to the design plan. However, in actual application, due to the certain errors between the actual adjustment of the on-site structure and the design, this method will lead to a large error between the design and the tooling during debugging, so that the target imaging state cannot be adjusted, or repeated confirmation and debugging are required, resulting in a waste of a lot of time and manpower, and high costs. Summary of the invention

[0004] The present invention provides a lithium battery pole piece debugging system and debugging method, which can quickly meet the imaging debugging requirements of the lithium battery pole piece through physical debugging of the lithium battery pole piece, without the need for repeated rework debugging and confirmation, thereby reducing debugging time and cost and ensuring debugging effect.

[0005] In a first aspect, the present invention provides a lithium battery pole piece debugging system, comprising a control unit, a plurality of image acquisition modules, a light source module, a transmission mechanism and a pole piece collinear target; the control unit is electrically connected to each image acquisition module and the light source module respectively; the light source module and each image acquisition module are located on the same side of the transmission mechanism; the arrangement direction of each image acquisition module is parallel to the light source module; the pole piece collinear target or the lithium battery pole piece is arranged on the transmission mechanism and is bonded to the transmission mechanism;

[0006] The transmission mechanism is used to transmit the lithium battery pole piece; the light source module is used to emit a ray light source, and the pole piece collinear target or the lithium battery pole piece is located on the propagation path of the line light source; the image acquisition module is used to obtain image information reflected from the pole piece collinear target or the lithium battery pole piece;

[0007] The control unit is used to receive image information, and according to the brightness debugging requirements of the lithium battery pole piece, after initializing the light source module and each image acquisition module, and completing the collinear setting of each image acquisition module, adjust the position of the light source module and each image acquisition module so that the gray value of the image information is within the preset gray value range, thereby realizing the brightness debugging of the lithium battery pole piece;

[0008] The control unit is also used to receive image information. According to the distance measurement requirements of the lithium battery electrode, after the distortion correction of each image acquisition module is completed, the distance measurement simulation of the image information is performed to ensure that the distance measurement value of the image information is within the preset distance measurement error range of the distance measurement design value.

[0009] Optionally, the pole piece collinear target includes a first target area, and when the pole piece collinear target is set on the transmission mechanism, the image information collected by the image acquisition module is the first image information reflected by the first target area; when the lithium battery pole piece is set on the transmission mechanism, the image information collected by the image acquisition module is the second image information reflected by the lithium battery pole piece;

[0010] The control unit is also used to receive the first image information, and adjust the position of each image acquisition module and the light source module according to the initialization requirements of the light source module and each image acquisition module to achieve the initialization of the light source module and each image acquisition module; after the initialization is completed, according to the collinearity requirements of each image acquisition module, adjust the position of each image acquisition module so that the first image information reaches the preset image information, and achieve the collinearity setting of each image acquisition module;

[0011] The control unit is also used to receive the second image information after the collinear setting is completed, and adjust the position of the light source module and each image acquisition module according to the brightness debugging requirements of the lithium battery electrode to make the grayscale value of the second image information within a preset grayscale value range.

[0012] Optionally, the initialization requirement includes that the angles of the light source module and the image acquisition module relative to the normal are both within a preset angle error range of the designed angle.

[0013] Optionally, the first image information includes at least three groups of stripes of different thicknesses, and the colinearity requirement includes that the stripe thicknesses of the three groups of stripes of different thicknesses in each of the first image information all meet a preset stripe thickness requirement.

[0014] Optionally, the debugging system further includes a crossbeam and a rotating mechanism; each image acquisition module is fixed on the crossbeam;

[0015] The rotating mechanism is fixedly connected to the crossbeam and the light source module respectively, and the rotating mechanism is also electrically connected to the control unit;

[0016] The control unit is also used to control the rotating mechanism to perform three-dimensional rotation according to the brightness debugging requirements of the lithium battery pole piece, so as to drive the crossbeam and the light source module to rotate, thereby realizing the adjustment of the position of each image acquisition module and the light source module.

[0017] Optionally, the pole piece collinear target includes a second target area, a third target area and a fourth target area. When the pole piece collinear target is set on the transmission mechanism, the image information collected by the image acquisition module is the third image information reflected by the second target area, the fourth image information reflected by the third target area and the fifth image information reflected by the fourth target area; the fourth image information includes the positive electrode coating area, the positive electrode blank area and the positive electrode ceramic area, and the fifth image information includes the negative electrode coating area and the negative electrode blank area;

[0018] The control unit is further used to receive the third image information, and perform resolution compensation on the third image information according to the distortion correction requirements of each image acquisition module and the design resolution of the third image information, so that the resolution of the third image information reaches a preset resolution error range of the design resolution;

[0019] The control unit is also used to receive the fourth image information and the fifth image information, and according to the ranging requirements of the lithium battery electrode, perform ranging simulation on the positive electrode coated area, the positive electrode blank area and the positive electrode ceramic area of ​​the fourth image information, and the negative electrode coated area and the negative electrode blank area of ​​the fifth image information, to determine that the ranging values ​​of the positive electrode coated area, the positive electrode blank area, the positive electrode ceramic area, the negative electrode coated area and the negative electrode blank area are all within the preset ranging error range of the corresponding ranging design value.

[0020] Optionally, the conveying mechanism includes at least a guide roller, and the arrangement direction of each image acquisition module is parallel to the extension direction of the guide roller.

[0021] In a second aspect, the present invention provides a lithium battery pole piece debugging method, which is implemented based on the above-mentioned lithium battery pole piece debugging system, and includes:

[0022] Receive image information, and according to the brightness debugging requirements of the lithium battery pole piece, after initializing the light source module and each image acquisition module, and completing the collinear setting of each image acquisition module, adjust the position of the light source module and each image acquisition module so that the grayscale value of the image information is within the preset grayscale value range, thereby realizing the brightness debugging of the lithium battery pole piece;

[0023] Receive image information, and after completing the distortion correction of each image acquisition module according to the distance measurement requirements of the lithium battery electrode, perform distance measurement simulation on the image information so that the distance measurement value of the image information is within the preset distance measurement error range of the distance measurement design value.

[0024] Optionally, receiving image information, and adjusting the positions of the light source module and the image acquisition modules after initializing the light source module and the image acquisition modules and completing the collinear setting of the image acquisition modules according to the brightness debugging requirements of the lithium battery electrode, so that the grayscale value of the image information is within a preset grayscale value range, including:

[0025] Receive the first image information, and adjust the position of each image acquisition module and the light source module according to the initialization requirements of the light source module and each image acquisition module to initialize the light source module and each image acquisition module;

[0026] After the initialization is completed, the position of each image acquisition module is adjusted according to the collinearity requirements of each image acquisition module, so that the first image information reaches the preset image information;

[0027] After the collinear setting is completed, the second image information is received, and according to the brightness debugging requirements of the lithium battery electrode, the positions of the light source module and each image acquisition module are adjusted so that the grayscale value of the second image information is within the preset grayscale value range.

[0028] Optionally, receiving image information, and after completing the distortion correction of each image acquisition module according to the distance measurement requirements of the lithium battery electrode, performing distance measurement simulation on the image information so that the distance measurement value of the image information is within a preset distance measurement error range of the distance measurement design value, including:

[0029] receiving the third image information, and performing resolution compensation on the third image information according to the distortion correction requirements of each image acquisition module and the design resolution of the third image information, so that the resolution of the third image information reaches within a preset resolution error range of the design resolution;

[0030] The fourth image information and the fifth image information are received, and according to the ranging requirements of the lithium battery electrode, ranging simulations are performed on the positive electrode coated area, the positive electrode blank area and the positive electrode ceramic area of ​​the fourth image information, and the negative electrode coated area and the negative electrode blank area of ​​the fifth image information, respectively, to determine that the ranging values ​​of the positive electrode coated area, the positive electrode blank area, the positive electrode ceramic area, the negative electrode coated area and the negative electrode blank area are all within the preset ranging error range of the corresponding ranging design value.

[0031] The technical solution of the present invention is that the light source module emits a line light source and is incident on the transmission mechanism. The line light source will be incident on the surface of the pole piece collinear target or the lithium battery pole piece. At this time, the image acquisition module will obtain the image information reflected from the pole piece collinear target or the lithium battery pole piece. The control unit is electrically connected to each image acquisition module, so the control unit will receive the image information. When the lithium battery pole piece is adjusted for brightness, the lithium battery pole piece will be set on the transmission mechanism. At this time, the control unit receives the image information reflected on the lithium battery pole piece. According to the brightness adjustment requirements of the lithium battery pole piece, after the initialization of the light source module and each image acquisition module is completed, and the collinear setting of each image acquisition module is completed, the angle of the light source module and each image acquisition module is changed by adjusting the position of the light source module and each image acquisition module, so that the image information changes synchronously. Through this adjustment method, the grayscale value of the image information is adjusted to be within the preset grayscale value range, and the brightness adjustment of the lithium battery pole piece is realized at this time. When debugging the distance measurement of lithium battery pole pieces, each image acquisition module obtains the image information reflected on the collinear target of the pole piece, and the control unit receives the image information. According to the distance measurement requirements of the lithium battery pole piece, after the distortion correction of each image acquisition module is completed, the image information is verified and debugged, and the distortion correction compensation is performed in real time until the distance measurement value of the image information is within the preset distance measurement error range of the distance measurement design value. Using the above system, through the physical debugging of the lithium battery pole piece, the imaging debugging requirements of the lithium battery pole piece are quickly met, and there is no need for repeated rework debugging and confirmation, which reduces the debugging time and cost and ensures the debugging effect.

[0032] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 A schematic diagram of the structure of a lithium battery pole piece debugging system provided by an embodiment of the present invention;

[0035] Figure 2 A structural diagram of a connection relationship provided by an embodiment of the present invention;

[0036] Figure 3 A schematic diagram of the structure of a second lithium battery pole piece debugging system provided by an embodiment of the present invention;

[0037] Figure 4 A schematic diagram of the structure of a pole piece collinear target provided by an embodiment of the present invention;

[0038] Figure 5 A schematic diagram of three groups of triangles on a first target area provided by an embodiment of the present invention;

[0039] Figure 6 A schematic diagram of first image information provided by an embodiment of the present invention;

[0040] Figure 7 A schematic diagram of three regions on a lithium battery electrode provided by an embodiment of the present invention;

[0041] Figure 8 A schematic diagram of third image information provided by an embodiment of the present invention;

[0042] Fig. 9 A flow chart of a lithium battery pole piece debugging method provided by an embodiment of the present invention;

[0043] Fig.10 A flow chart of a second lithium battery pole piece debugging method provided by an embodiment of the present invention;

[0044] Among them, 1-control unit, 2-image acquisition module, 3-light source module, 4-transmission mechanism, 5-pole colinear target, 51-first target area, 52-second target area, 53-third target area, 54-fourth target area, 6-lithium battery pole piece, 7-crossbeam. DETAILED DESCRIPTION

[0045] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0046] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0047] In one embodiment, Figure 1 A schematic diagram of a lithium battery electrode debugging system provided by an embodiment of the present invention is shown in FIG. Figure 2 A structural diagram of a connection relationship provided by an embodiment of the present invention, Figure 3 A schematic diagram of the structure of a second lithium battery pole piece debugging system provided in an embodiment of the present invention, Figure 4 The schematic diagram of the structure of a pole piece collinear target provided by an embodiment of the present invention is applicable to debugging the debugging system of the lithium battery pole piece before actual operation and use to confirm the imaging state of the lithium battery pole piece, such as Figures 1 to 4 As shown, the debugging system includes a control unit 1, multiple image acquisition modules 2, a light source module 3, a transmission mechanism 4 and a pole piece collinear target 5; the control unit 1 is electrically connected to each image acquisition module 2 and the light source module 3 respectively; the light source module 3 and each image acquisition module 2 are located on the same side of the transmission mechanism 4; the arrangement direction of each image acquisition module 2 is parallel to the light source module 3; the pole piece collinear target 5 or the lithium battery pole piece 6 is arranged on the transmission mechanism 4 and is attached to the transmission mechanism 4; the transmission mechanism 4 is used to transmit the lithium battery pole piece 6; the light source module 3 is used to emit a line light source, and the pole piece collinear target 5 or the lithium battery pole piece 6 is located on the propagation path of the line light source; the image acquisition module 2 is used to obtain the pole piece collinear target 5 Or image information reflected on the lithium battery pole piece 6; the control unit 1 is used to receive image information, and according to the brightness debugging requirements of the lithium battery pole piece 6, after the light source module 3 and each image acquisition module 2 are initialized, and the colinear setting of each image acquisition module 2 is completed, the position of the light source module 3 and each image acquisition module 2 is adjusted to make the grayscale value of the image information within the preset grayscale value range, so as to realize the brightness debugging of the lithium battery pole piece 6; the control unit 1 is also used to receive image information, according to the ranging requirements of the lithium battery pole piece 6, after the distortion correction of each image acquisition module 2 is completed, the ranging simulation of the image information is performed, so that the ranging value of the image information is within the preset ranging error range of the ranging design value.

[0048] Among them, multiple image acquisition modules 2 are used to obtain image information reflected from the imaging area of ​​the conveying mechanism 4. The image acquisition module 2 may include but is not limited to a CCD industrial camera or a CMOS industrial camera. The industrial camera includes a lens for imaging. The light source module 3 is used to emit a line light source. The light source module 3 may include but is not limited to an LED lamp, an incandescent lamp or a fluorescent lamp. The conveying mechanism 4 is used to convey the lithium battery pole piece 6. During the physical debugging of the lithium battery pole piece 6, the conveying mechanism 4 remains stationary, and the image information is adjusted by changing the positions of the multiple image acquisition modules 2 and the light source module 3. In this embodiment, the conveying mechanism 4 may include but is not limited to guide rollers, refer to Figure 1 , when setting the position of the image acquisition module 2, the arrangement direction of each image acquisition module 2 is parallel to the extension direction of the guide roller to ensure that the image information collected by each image acquisition module 2 is on the same imaging straight line. In addition, the light source module 3 and each image acquisition module 2 are located on the same side of the transmission mechanism 4 to ensure that the light source module 3 can be incident on the transmission mechanism 4, and each image acquisition module 2 can obtain the image information reflected from the transmission mechanism 4. The image information is the image information reflected by the pole piece collinear target 5 or the lithium battery pole piece 6. The pole piece collinear target 5 is a calibration target used in the debugging system. The pole piece collinear target 5 includes four target areas, each target area is a row, and its function can be determined according to actual needs. In this embodiment, the function of each target area of ​​the pole piece collinear target 5 is different. In addition, the pole piece collinear target 5 is arranged on the transmission mechanism 4 and is in contact with the transmission mechanism 4. The design of the size of the electrode collinear target 5 can be adaptively adjusted according to the field of view of each image acquisition module 2 and the circumference of the transmission mechanism 4 to ensure that the target area of ​​the electrode collinear target 5 is always within the field of view of the image acquisition module 2. Lithium battery pole piece 6 is a key component of lithium-ion battery, including positive pole piece and negative pole piece, which directly affects the electrochemical performance and safety of lithium battery. In addition, when debugging the brightness of lithium battery pole piece 6, lithium battery pole piece 6 can be set on the transmission mechanism 4 and fit with the transmission mechanism 4. The control unit 1 is the core unit of the debugging system, which is mainly used to receive the image information of each image acquisition module 2, and in combination with different debugging requirements, realize the position adjustment of the light source module 3 and each image acquisition module 2, and the ranging simulation of the image information, to ensure that the debugging requirements are quickly met.

[0049] Specifically, after the system is assembled, the lithium battery pole piece 6 can be debugged, and the light source module 3 emits a line light source, which will be incident on the transmission mechanism 4. When the pole piece collinear target 5 is located on the transmission mechanism 4, the line light source will be incident on the pole piece collinear target 5 and reflected to each image acquisition module 2, and each image acquisition module 2 obtains the image information on the pole piece collinear target 5; when the lithium battery pole piece 6 is located on the transmission mechanism 4, the line light source will be incident on the lithium battery pole piece 6 and reflected to each image acquisition module 2, and each image acquisition module 2 obtains the image information on the lithium battery pole piece 6. When debugging the brightness of the lithium battery pole piece 6, it is first necessary to initialize the angles of the light source module 3 and each image acquisition module 2, so that the angles between the light source module 3 and each image acquisition module 2 and the normal are all within the preset angle error range of the design value, so that initialization is achieved. After the initialization is completed, it is necessary to complete the collinear operation of each image acquisition module 2 so that the imaging points of each image acquisition module 2 are on a straight line. The collinear process may include setting the pole piece collinear target 5 on the transmission mechanism 4, receiving the image information reflected by the pole piece collinear target 5, and realizing the collinear setting according to the image information. After the collinear setting is completed, the lithium battery pole piece 6 is set on the transmission mechanism 4 and fits with the transmission mechanism 4. Each image acquisition module 2 obtains the image information reflected by the lithium battery pole piece 6. At this time, the control unit 1 will receive the image information and adjust the brightness according to the requirements of the lithium battery pole piece 6. The brightness adjustment requirements can be that the grayscale value of the received image information must be within the preset grayscale value range. Therefore, after receiving the image information, the control unit 1 will confirm the grayscale value of the image information. When it is determined that the grayscale value is not within the preset grayscale value range, such as when the grayscale value of the image information is too high or too low, the transmission mechanism 4 can be controlled not to move, and the position of the light source module 3 and each image acquisition module 2 can be adjusted to change the angle of the light source module 3 and each image acquisition module 2, so that the grayscale value of the image information finally received by the control unit 1 will also change accordingly, and the real-time adjustment method is used until it is determined that the grayscale value of the image information is within the preset grayscale value range, thereby realizing the brightness adjustment of the lithium battery pole piece 6. When it is determined that the grayscale value is within the preset grayscale value range, it indicates that the brightness of the lithium battery pole piece 6 has reached the preset brightness requirement. At this time, the positions of the light source module 3 and each image acquisition module 2 are kept unchanged to provide a basis for subsequent normal operation. When debugging the distance measurement of the lithium battery pole piece 6, it is first necessary to perform distortion calibration, that is, to perform distortion correction on each image acquisition module 2 so that the distortion of the image information obtained by each image acquisition module 2 can be compensated in real time. After the distortion correction is completed, it is necessary to measure the distance of different areas of the lithium battery pole piece 6. According to the distance measurement requirements of the lithium battery pole piece 6, the distance measurement simulation is performed on different target areas on the pole piece collinear target 5. At this time, the control unit 1 receives the image information of the corresponding target area, and the image information can represent different areas of the lithium battery pole piece 6.By determining whether the distances of different areas in the image information are all within the preset ranging error range of the design value, when it is determined that the ranging values ​​of different areas in the image information are within the preset ranging error range of the design value, it indicates that the distortion correction results of each image acquisition module 2 meet the preset correction standard, and no distortion correction adjustment is performed. When it is determined that the ranging values ​​of different areas in the image information are outside the preset ranging error range of the design value, it indicates that the distortion correction results of each image acquisition module 2 do not meet the preset correction standard, and the ranging value of the image information simulated by the distortion correction result deviates greatly from the design value, then the distortion correction of each image acquisition module 2 is continued until it is determined that the ranging value of the image information is within the preset ranging error range of the ranging design value. In this way, the ranging verification and debugging of the lithium battery pole piece 6 is realized.

[0050] The technical solution of the embodiment of the present invention is that the light source module emits a line light source and incidents it on the transmission mechanism. The line light source will be incident on the surface of the pole piece collinear target or the lithium battery pole piece. At this time, the image acquisition module will obtain the image information reflected from the pole piece collinear target or the lithium battery pole piece. The control unit is electrically connected to each image acquisition module, so the control unit will receive the image information. When the lithium battery pole piece is adjusted for brightness, the lithium battery pole piece will be set on the transmission mechanism. At this time, the control unit receives the image information reflected on the lithium battery pole piece. According to the brightness adjustment requirements of the lithium battery pole piece, after the initialization of the light source module and each image acquisition module is completed, and the collinear setting of each image acquisition module is completed, the angle of the light source module and each image acquisition module is changed by adjusting the position of the light source module and each image acquisition module, so that the image information changes synchronously. Through this adjustment method, the grayscale value of the image information is adjusted to be within the preset grayscale value range, and the brightness adjustment of the lithium battery pole piece is realized at this time. When debugging the distance measurement of lithium battery pole pieces, each image acquisition module obtains the image information reflected on the collinear target of the pole piece, and the control unit receives the image information. According to the distance measurement requirements of the lithium battery pole piece, after the distortion correction of each image acquisition module is completed, the image information is verified and debugged, and the distortion correction compensation is performed in real time until the distance measurement value of the image information is within the preset distance measurement error range of the distance measurement design value. Using the above system, through the physical debugging of the lithium battery pole piece, the imaging debugging requirements of the lithium battery pole piece are quickly met, and there is no need for repeated rework debugging and confirmation, which reduces the debugging time and cost and ensures the debugging effect.

[0051] In another specific embodiment, optionally, continue to refer to Figure 1The debugging system also includes a crossbeam 7 and a rotating mechanism (not shown in the figure); each image acquisition module 2 is fixed on the crossbeam 7; the rotating mechanism is fixedly connected to the crossbeam 7 and the light source module 3 respectively, and the rotating mechanism is also electrically connected to the control unit 1; the control unit 1 is also used to control the rotating mechanism to perform three-dimensional rotation according to the brightness debugging requirements of the lithium battery electrode 6, so as to drive the crossbeam 7 and the light source module 3 to rotate, thereby realizing the adjustment of the position of each image acquisition module 2 and the light source module 3.

[0052] Specifically, refer to Figure 1 When installing and debugging the system, at least four vertical columns perpendicular to the ground are first provided. The transmission mechanism 4 and the light source module 3 are both arranged in the columns. Each image acquisition module 2 is fixedly connected to the crossbeam 7, and the crossbeam 7 is arranged in the columns. The control unit 1 is electrically connected to the rotation mechanism. When the control unit 1 determines that the position of the light source module 3 and each image acquisition module 2 needs to be adjusted, the rotation mechanism can be controlled to rotate three-dimensionally according to the actual adjustment direction. During the rotation of the rotation mechanism, the light source module 3 and the crossbeam 7 are driven to rotate. During the rotation of the crossbeam 7, the image acquisition modules 2 are driven to rotate, thereby realizing the position adjustment of the light source module 3 and each image acquisition module 2. In this embodiment, the rotation mechanism may include a first rotating structure and a second rotating structure. The first rotating structure is connected to the light source module 3, and the second rotating structure is connected to the crossbeam 7. In this way, the position of the light source module 3 and the crossbeam 7 can be adjusted respectively.

[0053] In addition, in order to reduce the system cost, in the actual setting process, an intermediate plate structure can be set between the crossbeam 7 and each image acquisition module 2, and screws are set around the intermediate plate. When adjusting the position of each image acquisition module 2, the screws can be accurately adjusted using tools such as an angle meter to achieve angle adjustment of each image acquisition module 2. Similarly, when the crossbeam 7 is connected to the column, and when the light source module 3 is connected to the column, the position of the light source module 3 and the crossbeam 7 can be adjusted by setting an intermediate plate and setting screws on the intermediate plate, thereby achieving a simulated debugging process for imaging the lithium battery pole piece 6.

[0054] In another specific embodiment, Figure 5 A schematic diagram of three groups of triangles on a first target area provided by an embodiment of the present invention, Figure 6 A schematic diagram of first image information provided by an embodiment of the present invention, Figure 7 A schematic diagram of three regions on a lithium battery electrode provided by an embodiment of the present invention, with reference to Figures 3 to 7As shown, the pole piece collinear target 5 includes a first target area 51. When the pole piece collinear target 5 is set on the transmission mechanism 4, the image information collected by the image acquisition module 2 is the first image information reflected by the first target area 51; when the lithium battery pole piece 6 is set on the transmission mechanism 4, the image information collected by the image acquisition module 2 is the second image information reflected by the lithium battery pole piece 6; the control unit 1 is also used to receive the first image information, and adjust the position of each image acquisition module 2 and the light source module 3 according to the initialization requirements of the light source module 3 and each image acquisition module 2 to achieve the initialization of the light source module 3 and each image acquisition module 2; after the initialization is completed, according to the collinear requirements of each image acquisition module 2, the position of each image acquisition module 2 is adjusted so that the first image information reaches the preset image information, and the collinear setting of each image acquisition module 2 is achieved; the control unit 1 is also used to receive the second image information after the collinear setting is completed, and adjust the position of the light source module 3 and each image acquisition module 2 according to the brightness debugging requirements of the lithium battery pole piece 6, so that the grayscale value of the second image information is within the preset grayscale value range.

[0055] The first target area 51 is used for initialization and the co-linear operation of each image acquisition module 2. Figure 4 and Figure 5 The first target area 51 includes six groups of triangular patterns, three groups on each side, and the length of the first target area 51 can completely cover the transmission mechanism 4 and is within the field of view of the image acquisition module 2. When each image acquisition module 2 acquires the first image information, each image acquisition module 2 acquires the following Figure 5 The three groups of triangle groups shown, such as the image acquisition module 2, include two in total. The first image acquisition module 2 obtains the three groups of triangle groups on the left side of the first target area 51, and the second image acquisition module 2 obtains the three groups of triangle groups on the right side of the first target area 51. Each group of triangle groups includes three triangles, and a square of different sizes is arranged on the vertex of each triangle. The three squares in the middle group have the same side length, the middle square in the left and right groups of triangles has the same side length as the square in the middle group, and the side squares on both sides of the left and right groups of triangles are shorter than the side length of the square in the middle group.

[0056] Specifically, when the light source module 3 and each image acquisition module 2 are initialized, the pole piece collinear target 5 is attached to the conveying mechanism 4. Usually, a piece of white paper is first attached to the conveying mechanism 4, and then the pole piece collinear target 5 is attached to the surface of the white paper. After the attachment is completed, the first target area 51 is now in the imaging area of ​​the image acquisition module 2. Therefore, the linear light source incident on the light source module 3 will be incident on the imaging area, the image acquisition module 2 will obtain the first image information reflected by the imaging area, and the control unit 1 receives the first image information. At this time, when the position of the light source module 3 and each image acquisition module 2 changes, the first image information received by the control unit 1 changes synchronously. Therefore, according to the change of the first image information, the specific position of the light source module 3 and each image acquisition module 2 at this time can be determined, so that the angle between the light source module 3 and the image acquisition module 2 relative to the normal can be determined, refer to Figure 3 , wherein the angle between the light source module 3 and the normal is the incident angle, and the angle between the image acquisition module 2 and the normal is the reflection angle. For example, when the lithium battery pole piece 6 is the positive pole piece, the design angle of the incident angle is 20°, and the design angle of the reflection angle is 30°. When the light source module 3 and each image acquisition module 2 are initialized, the positions of the light source module 3 and each image acquisition module 2 are adjusted according to the first image information, so that the angles of the incident angle and the reflection angle change until the angles of the light source module 3 and the image acquisition module 2 relative to the normal are within the preset angle error range of the design angle. Among them, the preset angle error range can be determined according to actual conditions. In this embodiment, the preset angle error range can be [-0.5°, 0.5°]. After the position adjustment of the light source module 3 and each image acquisition module 2 is completed, the difference between the incident angle and the reflection angle and the design angle is determined. When it is determined that the incident angle and the reflection angle are both within ±0.5° of the design angle, it indicates that the initialization of the light source module 3 and each image acquisition module 2 is completed.

[0057] After the initialization is completed, each image acquisition module 2 needs to be collinearly operated. In this embodiment, after each image acquisition module 2 obtains three groups of triangles in the first target area 51, each image acquisition module 2 displays a square stripe pattern set on each triangle group. Each square is displayed as a stripe, and the side lengths of the squares are different. The thickness of the stripe pattern of each triangle group is also different. Figure 6 , the thicker black stripes are Figure 5 For the target patterns on both sides of the middle triangle group, when performing the collinear operation, you can pay attention to the thicker black stripes instead of the thicker black stripes. Figure 6 There are three groups of stripes of different thicknesses in the middle, left, center and right. The lines in the middle group are three black stripes of equal thickness, and the lines in the left and right groups are three black stripes with thicker middle stripes and thinner sides. Figure 6The thickness of the stripes displayed is the preset stripe thickness requirement that needs to be met for the collinearity requirement. After the control unit 1 receives the first image information, according to the thickness of the three groups of stripes in the first image information, if the thickness of the three groups of stripes does not meet the requirement, Figure 6 When the preset stripe thickness requirement shown in is met, the position of each image acquisition module 2 is adjusted to change the image acquisition angle of each image acquisition module 2, thereby changing the first image information. At this time, the number and thickness of stripes corresponding to the three groups of triangles will change. According to the actual imaging situation, the collinearity and tilt direction of the current image acquisition module 2 can be determined. Through real-time observation and adjustment, when each image acquisition module 2 is adjusted to have three groups of triangles in the field of view, Figure 6 After the correct black stripes shown, it indicates that all the image acquisition modules 2 are collinear at this time. At this time, the imaging points of the image acquisition modules 2 are on a straight line, and the collinear setting of the image acquisition modules 2 is realized.

[0058] After the collinear setting is completed, it indicates that the positions and angles of each image acquisition module 2 and the light source module 3 have reached the preset requirements, and the brightness of the lithium battery pole piece 6 can be adjusted at this time. In this embodiment, when adjusting the brightness of the lithium battery pole piece 6, the pole piece collinear target 5 can be first removed from the conveying mechanism 4, and the lithium battery pole piece 6 of a preset length can be pasted on the conveying mechanism 4. During the pasting process, the lithium battery pole piece 6 should be pasted on the conveying mechanism 4 in a centered and taut manner, and there should be no bumps or bubbles during the pasting process to avoid affecting the imaging effect. When pasting, ensure that the lithium battery pole piece 6 covers at least the length of the three guide rollers on the conveying mechanism 4, and ensure that the wrap angle of the lithium battery pole piece 6 on each guide roller is consistent with the wrap angle during the actual feeding. After the pasting is completed, the image received by the control unit 1 is the second image information reflected by the lithium battery pole piece 6 obtained by the image acquisition module 2. Because the lithium battery pole piece 6 includes three areas, the received second image information also includes three areas, which are expressed as follows Figure 7The three different areas of black, white and gray are shown, and the white area is between the black area and the gray area. By simulating the running direction and trend of the actual lithium battery pole piece 6, during the simulation process, the lithium battery pole piece 6 is kept stationary, and the second image information is changed synchronously by adjusting the position of the light source module 3 and each image acquisition module 2. In the actual simulation process, since each image acquisition module 2 has a time-sharing function, after each image acquisition module 2 obtains the second image information reflected by the imaging point of the lithium battery pole piece 6, the image acquisition module 2 will automatically separate the image information of the high signal and the image information of the low signal and merge them at the same level, thereby converting one picture into two pictures, and these two pictures also include three areas of black, white and gray. Therefore, the second image information received by the control unit 1 actually includes two pictures arranged up and down, and the picture located above the two pictures belongs to the high signal picture, and the picture below belongs to the low signal picture. When the position of the light source module 3 and each image acquisition module 2 changes, the grayscale values ​​of the corresponding two pictures will change, that is, the grayscale value of the second image information will change. The grayscale value corresponds to the brightness value. The higher the grayscale value, the stronger the brightness, and the lower the grayscale value, the weaker the brightness. By observing the imaging effect of the second image information while adjusting the position of the light source module 3 and each image acquisition module 2, after the grayscale values ​​of the two pictures of the second image information are both within the preset grayscale value range, it means that the brightness of the second image information has reached the preset brightness requirement, and the imaging point of the lithium battery electrode 6 is the target imaging point, then stop adjusting the position of the light source module 3 and each image acquisition module 2. In this embodiment, the preset grayscale value ranges of different areas are different. For example, in a high signal image, the preset grayscale value range of the black area can be 70-90, and the preset grayscale value range of the white and gray areas can be 200-255, that is, overexposure state. The above values ​​are only examples, which can be determined according to actual conditions, and are not specifically limited here.

[0059] In addition, it should be noted that the reason why the present embodiment performs physical debugging on the lithium battery pole piece 6 is that the material of the lithium battery pole piece 6 itself has multiple different regions, and the reflection characteristics of each region vary greatly, and it is difficult to find the same or similar material for alternative simulation; secondly, the material of the lithium battery pole piece 6 itself has a certain thickness, and alternative simulation of materials of different thicknesses may introduce ranging errors; furthermore, by debugging the actual material film of the lithium battery pole piece 6, it is possible to actually observe whether the grayscale value of each region reaches the preset grayscale value range, and at the same time, the imaging state of the defect can be quickly observed, without the need for subsequent repeated tape breaking debugging based on the effect, and the imaging debugging process is both simple and efficient.

[0060] In another specific embodiment, optionally, Figure 8 A schematic diagram of a third image information provided by an embodiment of the present invention, referring to Figure 4 , Figure 7 and Figure 8 As shown, the pole piece collinear target 5 includes a second target area 52, a third target area 53 and a fourth target area 54. When the pole piece collinear target 5 is set on the transmission mechanism 4, the image information collected by the image acquisition module 2 is the third image information reflected by the second target area 52, the fourth image information reflected by the third target area 53 and the fifth image information reflected by the fourth target area 54; the fourth image information includes the positive electrode coating area, the positive electrode blank area and the positive electrode ceramic area, and the fifth image information includes the negative electrode coating area and the negative electrode blank area; the control unit 1 is also used to receive the third image information, according to the distortion correction requirements of each image acquisition module 2, combined with the first The design resolution of the three image information is used to compensate the resolution of the third image information so that the resolution of the third image information reaches the preset resolution error range of the design resolution; the control unit 1 is also used to receive the fourth image information and the fifth image information, and according to the ranging requirements of the lithium battery electrode 6, the positive electrode coating area, the positive electrode blank area and the positive electrode ceramic area of ​​the fourth image information, and the negative electrode coating area and the negative electrode blank area of ​​the fifth image information are respectively simulated for ranging, and it is determined that the ranging values ​​of the positive electrode coating area, the positive electrode blank area, the positive electrode ceramic area, the negative electrode coating area and the negative electrode blank area are all within the preset ranging error range of the corresponding ranging design value.

[0061] Among them, reference Figure 4 , the second target area 52 is used to perform distortion correction on each image acquisition module 2, which includes a plurality of uniformly distributed black stripes. The third target area 53 and the fourth target area 54 are used to perform distance measurement debugging simulation on different areas of the lithium battery pole piece 6. The third target area 53 simulates three areas of the positive pole piece, namely the positive electrode coating area, the positive electrode blank area and the positive electrode ceramic area. The short black area simulates the positive electrode blank area, the long black area simulates the positive electrode coating area, and the white narrow stripe area simulates the positive electrode ceramic area. The material of the positive electrode blank area may include but is not limited to aluminum foil, the material of the positive electrode coating area may include but is not limited to lithium iron phosphate, and the material of the positive electrode ceramic area may include but is not limited to AT9 ceramic material. The fourth target area 54 simulates two areas of the negative pole piece, namely the negative electrode coating area and the negative electrode blank area. The short black area simulates the negative electrode blank area, and the long white area simulates the negative electrode coating area. The material of the negative electrode blank area may include but is not limited to copper foil, and the material of the negative electrode coating area may include but is not limited to graphite.

[0062] Specifically, when the distance measurement simulation is performed on the lithium battery pole piece 6, in order to avoid the error in the distance measurement judgment of the lithium battery pole piece 6 caused by the distortion of the image acquisition module 2 itself, it is necessary to first perform distortion calibration on each image acquisition module 2. During the distortion calibration, the lithium battery pole piece 6 can be removed from the transmission mechanism 4, and the pole piece collinear target 5 is set on the transmission mechanism 4, and the second target area 52 is set in the imaging area, so that each image acquisition module 2 can obtain the third image information reflected by the second target area 52, and the control unit 1 synchronously receives the third image information, and the reference Figure 8 The third image information includes a plurality of black stripes, each of which corresponds to a different resolution. By segmenting the third image information, the resolution of each black stripe in each segment is determined, and a series of calculations, such as calculus, etc., can be performed. According to the design resolution corresponding to the design value of the third image information, the resolution to be compensated can be finally determined, so as to compensate the third image information. The compensated resolution can also be set in a table, and the compensation table can be called for compensation each time. The distance of the compensated third image information is compared with the design value to confirm whether the preset distance is reached. At this time, the resolution of the third image information is also within the preset resolution error range of the design resolution, so that the distortion correction of each image acquisition module 2 is achieved.

[0063] After the distortion correction is completed, each corrected image acquisition module 2 is verified, that is, the fourth image information reflected by the third target area 53 and the fifth image information reflected by the fourth target area 54 are verified by distance measurement to determine whether the distortion correction is accurate. In this embodiment, after the control unit 1 obtains the fourth image information, it will measure the distance of the positive electrode coating area, the positive electrode blank area and the positive electrode ceramic area in the fourth image information respectively, and determine whether the distance of each area in the fourth image information after distortion correction is within the preset distance measurement error range of the corresponding distance measurement design value in combination with the corresponding distance measurement design value. For example, the distance measurement design value of the positive electrode coating area is 5mm, and the result of the distance measurement of the positive electrode coating area after distortion correction is 5.001mm, and the preset distance measurement error range is [-0.005, 0.005], indicating that the distortion correction is accurate. If the distance measurement result is 5.01mm, which exceeds the preset distance measurement error range, it is determined whether each image acquisition module 2 is loose. If so, the position of each image acquisition module 2 is adjusted until the distance measurement result of the positive electrode coating area is within the preset distance measurement error range of the distance measurement design value. When each image acquisition module 2 is not loose, the distance measurement error exceeding the preset distance measurement error range can be directly compensated, that is, the compensation value can be directly set in the control unit 1 to -0.01mm. At this time, the distance measurement result of the positive electrode coating area after compensation is 5mm, which reaches the preset distance measurement error range of the distance measurement design value. Similarly, after the control unit 1 receives the fifth image information, the distance measurement of the negative electrode coating area and the negative electrode blank area in the fifth image information is performed respectively, so that the distance measurement values ​​of the negative electrode coating area and the negative electrode blank area are both within the preset distance measurement error range of the corresponding distance measurement design value. The distance measurement method is consistent with the distance measurement method of the fourth image information, and the distance measurement method of the fourth image information can be referred to, which will not be repeated here.

[0064] In another alternative embodiment, Fig. 9 A flowchart of a lithium battery pole piece debugging method provided in an embodiment of the present invention is implemented based on the above-mentioned lithium battery pole piece debugging system, referring to Fig. 9 As shown, the method includes:

[0065] S110, receiving image information, and adjusting the positions of the light source module and the image acquisition modules according to the brightness adjustment requirements of the lithium battery pole piece, after initializing the light source module and the image acquisition modules, and completing the colinear setting of the image acquisition modules, so that the grayscale value of the image information is within the preset grayscale value range, thereby achieving brightness adjustment of the lithium battery pole piece.

[0066] Specifically, when debugging the brightness of the lithium battery pole piece, it is first necessary to initialize the angles of the light source module and each image acquisition module so that the angles between the light source module and each image acquisition module and the normal are within the preset angle error range of the design value. After the initialization is completed, the collinear operation of each image acquisition module needs to be completed so that the imaging points of each image acquisition module are on a straight line. Among them, the collinear process may include receiving the image information reflected by the collinear target of the pole piece, confirming the image information, and realizing the collinear setting. After the collinear setting is completed, the image information reflected by the lithium battery pole piece will be received, and according to the brightness debugging requirements of the lithium battery pole piece, the brightness debugging requirements are that the grayscale value of the received image information must be within the preset grayscale value range. Therefore, after receiving the image information, the grayscale value of the image information will be confirmed. When it is determined that the grayscale value is not within the preset grayscale value range, such as when the grayscale value of the image information is too high or too low, the position of the light source module and each image acquisition module is adjusted to change the angle of the light source module and each image acquisition module, and the grayscale value of the received image information will also change accordingly. By adjusting the position of the light source module and each image acquisition module in real time until it is determined that the grayscale value of the image information is within the preset grayscale value range, the brightness debugging of the lithium battery pole piece is realized. When it is determined that the grayscale value is within the preset grayscale value range, it indicates that the brightness of the lithium battery pole piece has reached the preset requirements at this time, and the position of the light source module and each image acquisition module is maintained at this time to provide a basis for subsequent normal operation.

[0067] S120, receiving image information, and after completing the distortion correction of each image acquisition module according to the distance measurement requirements of the lithium battery electrode, performing distance measurement simulation on the image information so that the distance measurement value of the image information is within the preset distance measurement error range of the distance measurement design value.

[0068] Specifically, when debugging the distance measurement of the lithium battery pole piece, calibration compensation is first required, that is, the distortion correction is performed on each image acquisition module so that the distortion of the image information obtained by each image acquisition module is compensated. After the distortion correction is completed, it is necessary to measure the distance of different areas of the lithium battery pole piece. According to the distance measurement requirements of the lithium battery pole piece, the distance measurement simulation is performed using different target areas on the collinear target of the pole piece. At this time, the image information of the corresponding target area is received, and the image information can represent different areas of the lithium battery pole piece. By determining whether the distance of different areas in the image information is within the preset distance measurement error range of the design value, when it is determined that the distance measurement value of different areas in the image information is within the preset distance measurement error range of the design value, it indicates that the distortion correction result of each image acquisition module meets the preset correction standard, and no distortion correction adjustment is performed. When it is determined that the ranging values ​​of different areas in the image information are outside the preset ranging error range of the design value, it indicates that the distortion correction result of each image acquisition module does not meet the preset correction standard, and the ranging value of the image information simulated by the distortion correction result does not meet the requirement, then each image acquisition module continues to be subjected to distortion correction, or the ranging error of the ranging value is directly compensated, so that the ranging value of the image information is determined to be within the preset ranging error range of the ranging design value.

[0069] The technical solution of the embodiment of the present invention is to receive image information and adjust the positions of the light source module and each image acquisition module according to the brightness debugging requirements of the lithium battery pole piece after initializing the light source module and each image acquisition module and completing the collinear setting of each image acquisition module, so that the grayscale value of the image information is within the preset grayscale value range, thereby realizing the brightness debugging of the lithium battery pole piece; receive image information and perform ranging simulation on the image information after completing the distortion correction of each image acquisition module according to the ranging requirements of the lithium battery pole piece, so that the ranging value of the image information is within the preset ranging error range of the ranging design value. The above method is used to realize the debugging of the lithium battery pole piece, thereby quickly meeting the imaging debugging requirements of the lithium battery pole piece, without the need for repeated rework and debugging confirmation, reducing the debugging time and cost, and ensuring the debugging effect.

[0070] In another specific embodiment, Fig.10 A flowchart of a second lithium battery electrode debugging method provided in an embodiment of the present invention, referring to Fig.10 As shown, the method includes:

[0071] S210, receiving first image information, and adjusting the positions of the image acquisition modules and the light source modules according to initialization requirements of the light source modules and the image acquisition modules, so as to initialize the light source modules and the image acquisition modules.

[0072] Specifically, when the light source module and each image acquisition module are initialized, the first image information reflected by the first target area is received. When the positions of the light source module and each image acquisition module change, the first image information will change at the same time. Therefore, according to the change of the first image information, the specific positions of the light source module and each image acquisition module at this time can be determined, so that the angles of the light source module and the image acquisition module relative to the normal can be determined. The angle between the light source module and the normal is the incident angle, and the angle between the image acquisition module and the normal is the reflection angle. When the light source module and each image acquisition module are initialized, according to the first image information, the positions of the light source module and each image acquisition module are adjusted to change the angles of the incident angle and the reflection angle until the angles of the light source module and the image acquisition module relative to the normal are both within the preset angle error range. Among them, the preset angle error range can be determined according to actual conditions. In this embodiment, the preset angle error range can be [-0.5°, 0.5°]. When the positions of the light source module and each image acquisition module are adjusted, it is determined that the incident angle and the reflection angle are both within ±0.5° of the design angle, indicating that the initialization of the light source module and each image acquisition module is completed.

[0073] S220 , after the initialization is completed, the positions of the image acquisition modules are adjusted according to the collinearity requirements of the image acquisition modules, so that the first image information reaches the preset image information.

[0074] Specifically, after the initialization is completed, each image acquisition module needs to be collinearly operated. In this embodiment, after receiving the first image information, according to the thickness of the three groups of stripes in the first image information, when the thickness of the three groups of stripes does not meet the preset stripe thickness requirement, the position of each image acquisition module is adjusted to change the image acquisition angle of each image acquisition module, so that the first image information changes synchronously, that is, the number and thickness of stripes corresponding to the three groups of triangle groups will change. According to the actual imaging situation, the collinearity and tilt direction of the current image acquisition module can be judged. Through real-time observation and adjustment, when each image acquisition module is debugged to three groups of correct black stripes appear in the field of view, it indicates that all image acquisition modules are collinear at this time. At this time, the imaging points of each image acquisition module are on a straight line, and the collinear setting of each image acquisition module is realized.

[0075] S230, after the collinear setting is completed, receiving the second image information, and adjusting the positions of the light source module and each image acquisition module according to the brightness adjustment requirements of the lithium battery electrode piece, so that the grayscale value of the second image information reaches within a preset grayscale value range.

[0076] Specifically, after the collinear setting is completed, it indicates that the position and angle of each image acquisition module and light source module have reached the preset requirements, and the brightness of the lithium battery pole piece can be adjusted at this time. In this embodiment, when the brightness of the lithium battery pole piece is adjusted, the second image information reflected by the lithium battery pole piece obtained by the image acquisition module can be received. Since the lithium battery pole piece includes three areas, the received second image information also includes three areas, which are represented as three different areas of black, white and gray. By simulating the running direction and trend of the actual lithium battery pole piece, during the simulation process, the lithium battery pole piece is kept stationary, and the second image information is changed by adjusting the position of the light source module and each image acquisition module. In the actual simulation process, since each image acquisition module has a time-sharing function, after each image acquisition module obtains the second image information reflected by the imaging point of the lithium battery pole piece, the image acquisition module will automatically separate the image information of the high signal and the image information of the low signal and merge them at the same level, thereby converting one picture into two pictures. The two pictures also include three areas of black, white and gray. Therefore, the second image information actually includes two pictures arranged up and down. The upper picture of the two pictures belongs to the high-signal picture, and the lower picture belongs to the low-signal picture. When the position of the light source module and each image acquisition module changes, the corresponding two pictures will change, that is, the grayscale value of the second image information will change. The grayscale value corresponds to the brightness value. By observing the imaging effect of the second image information while adjusting the position of the light source module and each image acquisition module, the grayscale values ​​of the two pictures of the second image information are within the preset grayscale value range, indicating that the brightness of the second image information has reached the preset brightness requirement. At this time, the imaging point of the lithium battery pole piece is the target imaging point.

[0077] S240, receiving the third image information, and performing resolution compensation on the third image information according to the distortion correction requirements of each image acquisition module and the design resolution of the third image information, so that the resolution of the third image information is within a preset resolution error range of the design resolution.

[0078] Specifically, when performing ranging simulation on lithium battery pole pieces, in order to avoid lithium battery pole piece ranging judgment errors caused by the distortion of the image acquisition module itself, it is necessary to perform distortion calibration on each image acquisition module. During the distortion calibration, the third image information reflected by the second target area can be received. The third image information includes multiple black stripes, each black stripe corresponds to a different resolution. According to the design resolution corresponding to the design value of the third image information, the resolution that needs to be compensated can be finally determined, so as to compensate the third image information. The distance of the compensated third image information is compared with the design value to confirm whether the preset distance is reached. At this time, the resolution of the third image information is also within the preset resolution error range of the design resolution, thereby realizing the distortion correction of each image acquisition module.

[0079] S250, receiving the fourth image information and the fifth image information, and performing ranging simulation on the positive electrode coated area, the positive electrode blank area and the positive electrode ceramic area of ​​the fourth image information, and the negative electrode coated area and the negative electrode blank area of ​​the fifth image information according to the ranging requirements of the lithium battery electrode, to determine that the ranging values ​​of the positive electrode coated area, the positive electrode blank area, the positive electrode ceramic area, the negative electrode coated area and the negative electrode blank area are all within the preset ranging error range of the corresponding ranging design value.

[0080] Specifically, after the distortion correction is completed, each corrected image acquisition module is verified, that is, the fourth image information and the fifth image information are verified by ranging to determine whether the distortion correction is accurate. In this embodiment, after receiving the fourth image information, the positive electrode coating area, the positive electrode blank area and the positive electrode ceramic area in the fourth image information are respectively measured, and combined with the corresponding ranging design value, it is determined whether the distance of each area in the fourth image information after distortion correction is within the preset ranging error range of the corresponding ranging design value. Similarly, after receiving the fifth image information, the negative electrode coating area and the negative electrode blank area in the fifth image information are respectively measured, so that the ranging values ​​of the negative electrode coating area and the negative electrode blank area are both within the preset ranging error range of the corresponding ranging design value. The ranging method is consistent with the ranging method of the fourth image information, and the ranging method of the fourth image information can be referred to, which will not be repeated here.

[0081] The technical solution of the embodiment of the present invention quickly locates the optimal imaging point and the ranging accuracy and stability, greatly simplifies the debugging method of the lithium battery pole piece, shortens the debugging time and debugging efficiency, improves the debugging accuracy, reduces the production cost, and improves the debugging precision.

[0082] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0083] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A lithium battery pole piece debugging system, characterized in that: It includes a control unit, a plurality of image acquisition modules, a light source module, a transmission mechanism and a pole piece collinear target; the control unit is electrically connected to each of the image acquisition modules and the light source module respectively; the light source module and each of the image acquisition modules are located on the same side of the transmission mechanism; the arrangement direction of each of the image acquisition modules is parallel to the light source module; the pole piece collinear target or the lithium battery pole piece is arranged on the transmission mechanism and is bonded to the transmission mechanism; The transmission mechanism is used to transmit the lithium battery pole piece; the light source module is used to emit a ray light source, and the pole piece collinear target or the lithium battery pole piece is located on the propagation path of the line light source; the image acquisition module is used to obtain image information reflected from the pole piece collinear target or the lithium battery pole piece; The control unit is used to receive the image information, and according to the brightness debugging requirements of the lithium battery pole piece, after initializing the light source module and each of the image acquisition modules, and completing the collinear setting of each of the image acquisition modules, adjust the positions of the light source module and each of the image acquisition modules so that the grayscale value of the image information is within a preset grayscale value range, thereby realizing the brightness debugging of the lithium battery pole piece; The control unit is also used to receive the image information, and after the distortion correction of each image acquisition module is completed according to the ranging requirements of the lithium battery electrode, perform ranging simulation on the image information so that the ranging value of the image information is within the preset ranging error range of the ranging design value.

2. The debugging system according to claim 1, characterized in that: The pole piece collinear target includes a first target area. When the pole piece collinear target is arranged on the transmission mechanism, the image information collected by the image acquisition module is the first image information reflected by the first target area. When the lithium battery pole piece is arranged on the transmission mechanism, the image information collected by the image acquisition module is the second image information reflected by the lithium battery pole piece. The control unit is further used to receive the first image information, and adjust the position of each image acquisition module and the light source module according to the initialization requirements of the light source module and each image acquisition module, so as to initialize the light source module and each image acquisition module; After the initialization is completed, according to the collinearity requirements of each image acquisition module, the position of each image acquisition module is adjusted so that the first image information reaches the preset image information, thereby realizing the collinearity setting of each image acquisition module; The control unit is also used to receive the second image information after the collinear setting is completed, and adjust the position of the light source module and each image acquisition module according to the brightness debugging requirements of the lithium battery electrode to make the grayscale value of the second image information fall within the preset grayscale value range.

3. The debugging system according to claim 2, characterized in that: The initialization requirement includes that the angles of the light source module and the image acquisition module relative to the normal line are both within a preset angle error range of the designed angle.

4. The debugging system according to claim 2, characterized in that: The first image information includes at least three groups of stripes of different thicknesses, and the collinearity requirement includes that the stripe thicknesses of the three groups of stripes of different thicknesses in each of the first image information all meet the preset stripe thickness requirement.

5. The debugging system according to claim 1, characterized in that: The debugging system also includes a crossbeam and a rotating mechanism; each of the image acquisition modules is fixed on the crossbeam; The rotating mechanism is fixedly connected to the crossbeam and the light source module respectively, and the rotating mechanism is also electrically connected to the control unit; The control unit is also used to control the rotating mechanism to perform three-dimensional rotation according to the brightness adjustment requirements of the lithium battery pole piece, so as to drive the beam and the light source module to rotate, thereby adjusting the position of each image acquisition module and the light source module.

6. The debugging system according to claim 1, characterized in that: The pole piece collinear target includes a second target area, a third target area and a fourth target area. When the pole piece collinear target is arranged on the transmission mechanism, the image information collected by the image acquisition module is the third image information reflected by the second target area, the fourth image information reflected by the third target area and the fifth image information reflected by the fourth target area; the fourth image information includes the positive electrode coating area, the positive electrode blank area and the positive electrode ceramic area, and the fifth image information includes the negative electrode coating area and the negative electrode blank area; The control unit is further configured to receive the third image information, and perform resolution compensation on the third image information according to the distortion correction requirements of each of the image acquisition modules and the design resolution of the third image information, so that the resolution of the third image information reaches within a preset resolution error range of the design resolution; The control unit is also used to receive the fourth image information and the fifth image information, and according to the ranging requirements of the lithium battery electrode, perform ranging simulation on the positive electrode coated area, the positive electrode blank area and the positive electrode ceramic area of ​​the fourth image information, and the negative electrode coated area and the negative electrode blank area of ​​the fifth image information, respectively, to determine that the ranging values ​​of the positive electrode coated area, the positive electrode blank area, the positive electrode ceramic area, the negative electrode coated area and the negative electrode blank area are all within the preset ranging error range corresponding to the ranging design value.

7. The debugging system according to claim 1, characterized in that: The conveying mechanism at least includes a guide roller, and the arrangement direction of each of the image acquisition modules is parallel to the extension direction of the guide roller.

8. A lithium battery pole piece debugging method, characterized in that: The lithium battery pole piece debugging system according to any one of claims 1 to 7 is implemented, comprising: Receive image information, and according to the brightness debugging requirements of the lithium battery pole piece, after initializing the light source module and each image acquisition module, and completing the collinear setting of each image acquisition module, adjust the position of the light source module and each image acquisition module so that the grayscale value of the image information is within a preset grayscale value range, thereby realizing the brightness debugging of the lithium battery pole piece; The image information is received, and after the distortion correction of each image acquisition module is completed according to the ranging requirement of the lithium battery electrode, ranging simulation is performed on the image information so that the ranging value of the image information is within the preset ranging error range of the ranging design value.

9. The debugging method according to claim 8, characterized in that: Receiving image information, and adjusting the positions of the light source module and the image acquisition modules according to the brightness debugging requirements of the lithium battery electrode, after initializing the light source module and the image acquisition modules, and completing the collinear setting of the image acquisition modules, so that the grayscale value of the image information is within a preset grayscale value range, including: receiving first image information, and adjusting the positions of the image acquisition modules and the light source modules according to initialization requirements of the light source modules and the image acquisition modules, so as to initialize the light source modules and the image acquisition modules; After the initialization is completed, the position of each image acquisition module is adjusted according to the collinearity requirement of each image acquisition module, so that the first image information reaches the preset image information; After the collinear setting is completed, the second image information is received, and according to the brightness debugging requirements of the lithium battery pole piece, the positions of the light source module and each of the image acquisition modules are adjusted so that the grayscale value of the second image information reaches within the preset grayscale value range.

10. The debugging method according to claim 8, characterized in that: The image information is received, and after the distortion correction of each of the image acquisition modules is completed according to the ranging requirements of the lithium battery electrode, ranging simulation is performed on the image information so that the ranging value of the image information is within a preset ranging error range of the ranging design value, including: receiving third image information, and performing resolution compensation on the third image information according to the distortion correction requirements of each of the image acquisition modules and the design resolution of the third image information, so that the resolution of the third image information reaches a preset resolution error range of the design resolution; The fourth image information and the fifth image information are received, and according to the distance measurement requirements of the lithium battery electrode, the positive electrode coated area, the positive electrode blank area and the positive electrode ceramic area of ​​the fourth image information, and the negative electrode coated area and the negative electrode blank area of ​​the fifth image information are respectively subjected to distance measurement simulation to determine that the distance measurement values ​​of the positive electrode coated area, the positive electrode blank area, the positive electrode ceramic area, the negative electrode coated area and the negative electrode blank area are all within a preset distance measurement error range corresponding to the distance measurement design value.

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