Subfissure defect detection device applied to photovoltaic cell

Abstract

The utility model provides a photovoltaic cell subfissure defect detection device, which comprises a cross rod, a camera assembly, a locking device and more than two stand columns, two ends of the cross rod are fixedly connected with the stand columns to form an integrated hollow support, one side of each stand column is provided with a supporting rod, the supporting rod is provided with a sliding rail, and the sliding rail is provided with a sliding groove. The camera assembly is detachably fixed between the supporting rods through a locking device, the bottom of the locking device is arranged on the sliding rail in a sliding mode, the locking device comprises two or more fixing pins, through holes for the fixing pins to penetrate through are formed in the sliding rail in the extending direction of the supporting rods, and straight through holes for the fixing pins to penetrate through are formed in the locking device. Fixing shafts are arranged at the two ends of the camera assembly, a limiting block is arranged at the top of the locking device, and the limiting block is detachably connected with the bottom of the locking device to form a through groove used for being connected with the fixing shafts; according to the utility model, the detection camera can rotate at different angles without limitation while moving horizontally, the structure is simple, and the detection reliability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of detection, and particularly relates to a device for detecting hidden cracks in photovoltaic cells. Background Art

[0002] With the development of science and technology nowadays, the development and utilization of new energy are more practical. The development and utilization of photovoltaic equipment is one of them. Photovoltaic panels are required in photovoltaic equipment. During the production process of photovoltaic panels, defects may occur due to processing and other factors. For example, when hidden cracks occur in the photovoltaic panel and cause the fine grid lines to break, the current on the photovoltaic panel cannot be effectively transmitted to the main grid line, resulting in the local or even whole failure of the panel. Therefore, the detection of hidden cracks in photovoltaic panels is crucial.

[0003] For example, in the patent document with the Chinese patent application number 202322070183.1 and the publication date of June 18, 2024, a device for detecting hidden cracks in solar cells is disclosed, which relates to the field of detection automation. It includes a support main body, a first imaging module and a second imaging module arranged on the support main body. The first imaging module includes a first line scan camera and a backlight line scan light source respectively perpendicular to the front and back surfaces of the solar cell to be detected. The incident light emitted by the backlight line scan light source passes through the solar cell to be detected and is received by the first line scan camera. The second imaging module includes a second line scan camera and a reflected line scan light source arranged at an angle to the surface of the solar cell to be detected. The incident light of the reflected line scan light source is reflected by the solar cell to be detected to form an outgoing light and is received by the second line scan camera.

[0004] However, the first line scan camera and the second line scan camera in the above patent document can only rotate on the arc-shaped plate fixedly arranged on the support, but the arc-shaped plate cannot move. When comprehensively detecting the solar cell, it needs to move to different positions for multi-position detection. Since the camera can only rotate, if there are positions on the solar cell that cannot be photographed after the camera rotates, it will not be able to better scan and photograph the solar cell. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a device for detecting hidden cracks in photovoltaic cells. The detection camera can rotate at different angles without limit while moving horizontally, with a simple structure and high detection reliability.

[0006] The utility model provides the following technical solution: A device for detecting hidden cracks in photovoltaic cells, including a cross bar, a camera assembly, a locking device, and more than two columns. The two ends of the cross bar are fixedly connected to the columns to form an integral hollow support. An illumination light source is provided at the bottom of the hollow support between the columns. A support rod is provided on one side of the column. The support rod is arranged along the conveying direction of the cells. A slide rail is provided on the support rod. The camera assembly is detachably fixed between the support rods through the locking device. The bottom of the locking device is slidably arranged on the slide rail. The locking device includes more than two fixing pins. Through holes for the fixing pins to pass through are arranged on the slide rail along the extending direction of the support rod. Straight through holes for the fixing pins to pass through are arranged on the locking device. Fixing shafts are arranged at both ends of the camera assembly. A limiting block is arranged at the top of the locking device. The limiting block is detachably connected to the bottom of the locking device to form a through groove for connecting with the fixing shaft.

[0007] With the above settings, by providing an illumination light source at the bottom of the hollow support, the cells passing through the middle of the support can be illuminated, facilitating the camera assembly on the support to take pictures of the cells. By providing a slide rail on the support rod, after manually loosening the fixing pins to lock the locking device and the slide rail, the slider can drive the camera assembly to move horizontally on the support rod, thereby adjusting the position of the camera assembly. Then, the camera assembly is adjusted to the angle required for photographing the cells. Then, through the detachable connection between the limiting block and the bottom of the locking device to form a through groove for rotatably connecting with the fixing shaft, the fixing shaft of the camera assembly can be fixed between the bottom of the locking device and the limiting block by first adjusting the rotation angle of the camera in the through groove and then fixing the fixing shaft, stably realizing photographing of the cells.

[0008] Further, the locking device includes a slider slidably connected to the slide rail. The slider is arranged at the bottom of the locking device. A first arc-shaped slot is provided on the slider. A second arc-shaped slot is provided on the limiting block. The limiting block is detachably fixed to the slider through a first fixing pin. The first arc-shaped slot and the second arc-shaped slot correspond to each other to form a through groove matching the fixing shaft on the camera assembly.

[0009] With the above settings, by providing a first arc-shaped slot on the slider, a second arc-shaped slot on the limiting block, and detachably fixing the limiting block to the slider through a fixing pin, when the limiting block is not locked to the slider through the fixing pin, the camera assembly can be manually rotated, enabling the camera assembly to rotate 360° in the circular through groove formed by the corresponding first arc-shaped slot and second arc-shaped slot through the fixing shaft. The structure is simple and convenient for fixing.

[0010] Further, the camera assembly includes a camera, a camera mounting member, more than two connecting blocks one and connecting blocks two. A camera mounting hole is provided at the position of the central axis of the camera mounting member, and the camera is fixedly mounted on the mounting hole. Both ends of the camera mounting member are fixedly connected to one end of the connecting block one, and the connecting block two is fixedly mounted on one side of the connecting block one.

[0011] With the above settings, the camera can be mounted at the position of the central axis of the camera mounting member, which can better enable the camera to cover the battery cells under the bracket during the photographing process.

[0012] Further, one end of the fixed shaft is fixed on one side of the connecting block two, and the other end of the fixed shaft is embedded in the through groove formed by the corresponding first arc-shaped slot and the second arc-shaped slot.

[0013] With the above settings, the fixed shaft can be fixedly connected to the camera assembly. By manually rotating the camera assembly, the fixed shaft can rotate in the circular through groove, and thus the angle required by the camera assembly during the detection process can be adjusted.

[0014] Further, through holes matching the fixing pins are provided on both sides of the first arc-shaped slot on the slider, and through holes matching the fixing pins are provided on both sides of the second arc-shaped slot on the limiting block.

[0015] With the above settings, it is convenient for the fixing pin to pass through the through hole to fix the limiting block and the slider into one body, and thus they can move synchronously along with the movement of the slider.

[0016] Further, the support rod is set as an L-shaped rod. One end of the support rod is fixed on one side of the upper end of the column, and the other end of the support rod extends horizontally outward perpendicular to the column.

[0017] With the above settings, it is convenient to set a slide rail at the horizontally extending part outside the support rod.

[0018] Further, a light source mounting block is provided inside the column. The light source mounting block is fixed on the column by bolts, and both ends of the irradiation light source are fixedly mounted on the light source mounting block.

[0019] With the above settings, the irradiation light source can irradiate upward from the bottom of the bracket through the battery cells of the bracket.

[0020] Further, length scale lines are provided on one side surface of the support rod, and angle scale lines are provided on one side surface of the slider.

[0021] With the above settings, by providing length scale lines on the support rod, it is convenient to view the length information of the movement. By providing angle scale lines on the slider, it is convenient to understand the rotation angle situation. Brief Description of the Drawings

[0022] Figure 1This is the overall structural schematic diagram of the present utility model.

[0023] Figure 2 is Figure 1 the enlarged view of part A in

[0024] Figure 3 This is the partial exploded view of the present utility model.

[0025] Figure 4 This is the overall structural schematic diagram of another perspective of the present utility model. Detailed implementation manners

[0026] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0027] As Figures 1-4 shown, the present utility model provides a device for detecting hidden cracks in photovoltaic cells, including a cross bar 1, a camera assembly, a locking device, and two or more columns 2. In this embodiment, the number of columns 2 is set to two. The two ends of the cross bar 1 are fixedly connected to the upper ends of the two columns 2 to form an integral hollow bracket. A light source mounting block 3 is provided inside the column 2, and the light source mounting block 3 is fixed to the column 2 by bolts. An irradiation light source 4 is provided between the columns 2 at the bottom of the bracket, and both ends of the irradiation light source 4 are fixedly installed on the light source mounting block 3. In this embodiment, the irradiation light source 4 is set as an LED lamp, so that the irradiation light source 4 can irradiate upward from the bottom of the bracket through the battery cell 5 of the bracket; a support rod 6 is provided on one side of the column 2. The support rod 6 is set as an L-shaped rod. One end of the support rod 6 is detachably fixed to one side of the upper end of the column 2 by bolts, and the other end of the support rod 6 extends horizontally outward perpendicular to the column 2. A slide rail 7 is provided at the horizontal extension of the support rod 6, and the camera assembly is fixed between the support rods 6 through the locking device. The camera assembly includes a camera 11, a camera mounting member 12, two or more connecting blocks one 13, and a connecting block two 14. A camera mounting hole (not marked in the figure) is provided at the position of the central axis of the camera mounting member 12, and the industrial camera 11 is fixedly installed in the mounting hole. Both ends of the camera mounting member 12 are fixedly connected to one end of the connecting block one 13 by bolts, the connecting block two 14 is fixedly installed on one side of the connecting block one 13 by bolts, and a fixed shaft 15 is provided on one side of the connecting block two 14.

[0028] As Figure 2 and Figure 3As shown, the bottom of the locking device is slidably arranged on the slide rail 7. The locking device includes more than two fixing pins (not marked in the figure). Through holes for the fixing pins to pass through are arranged on the slide rail 7 along the extending direction of the support rod 6. Straight through holes 212 for the fixing pins to pass through are arranged on the locking device. Fixing shafts are arranged at both ends of the camera assembly. A limiting block 22 is arranged at the top of the locking device. The limiting block 22 is detachably connected to the bottom of the locking device to form a through groove for connecting with the fixing shaft.

[0029] In this embodiment, the locking device includes a slider 21, a limiting block 22 and more than two fixing pins. A first arc-shaped slot 211 is arranged on the slider 21. Through holes (not marked in the figure) matching the fixing pins are arranged on both sides of the first arc-shaped slot 211. A second arc-shaped slot 221 is arranged on the limiting block 22. Through holes (not marked in the figure) matching the fixing pins are arranged on both sides of the second arc-shaped slot 221. The first arc-shaped slot 211 and the second arc-shaped slot 221 correspond to form a through groove matching the fixing shaft 15 on one side of the connecting block two 14. One end of the fixing shaft 15 is fixed on one side of the connecting block two 14, and the other end of the fixing shaft 15 is embedded in the through groove. The limiting block 22 is detachably fixed on the slider 21 through the fixing pins passing through the through holes. In this way, when the limiting block 22 is not locked on the slider 21 through the fixing pins, the camera assembly can be manually rotated, so that the camera assembly can rotate 360° in the through groove formed by the corresponding first arc-shaped slot 211 and the second arc-shaped slot 221 through the fixing shaft 15, and then the camera assembly is adjusted to the angle required for photographing the battery sheet. Then, the limiting block 22 is locked by passing the fixing pins through the through holes, so that the fixing shaft 15 of the camera assembly is fixed between the slider 21 and the limiting block 22. A length scale line is arranged on one side surface of the support rod 6, and an angle scale line is arranged on one side surface of the slider 21.

[0030] In this embodiment, through holes matching the fixing pins are arranged on the slide rail 7. Straight through holes 212 capable of accommodating the fixing pins to pass through are arranged on both sides of the through holes on the slider 21. The slider 21 is slidably connected to the slide rail 7. In this way, after the slider 21 moves to the required position on the slide rail 7, the slider 21 can be fixed and locked on the slide rail 7 by passing the fixing pins through the straight through holes 212 of the slider 21 and the through holes on the slide rail 7. A fixing plate 8 is installed on the outer side of the column 2, and a pair of photoelectric sensors (not marked in the figure) are installed on the fixing plate 8 for detecting whether the battery sheet passes through the middle of the bracket.

[0031] Working principle of the utility model: The illumination light source 4, which is arranged at the bottom of the bracket and between the columns 2, irradiates upward through the battery cell 5 of the bracket from the bottom of the bracket. At the same time, after the slider 21 is pushed to move to the required position on the slide rail 7, the slider 21 is fixed and locked on the slide rail 7 by a fixing pin passing through the straight through hole 212 of the slider 21 and the through hole on the slide rail 7. When the limiting block 22 is not locked on the slider 21 by a fixing pin, the camera assembly can be manually rotated, so that the camera assembly realizes 360° rotation in the through groove formed by the corresponding first arc-shaped slot 211 and the second arc-shaped slot 221 through the fixing shaft 15, and then the camera assembly is adjusted to the angle required for photographing the battery cell. Then, the limiting block 22 is locked by a fixing pin passing through the through hole, so that the fixing shaft 15 of the camera assembly is fixed between the slider 21 and the limiting block 22, and the battery cell is stably photographed.

Claims

1. A device for detecting hidden cracks in photovoltaic cells, comprising a crossbar, a camera assembly, a locking device and two or more columns, characterized in that: The two ends of the cross bar are fixedly connected to the columns to form an integrated hollow bracket, and a light source is provided at the bottom of the hollow bracket between the columns. A support rod is provided on one side of the column, and the support rod is arranged along the conveying direction of the battery cells. A slide rail is provided on the support rod, and the camera assembly is detachably fixed between the support rods by a locking device. The bottom of the locking device is slidably arranged on the slide rail, and the locking device includes more than two fixing pins. A through hole for the fixing pin to pass through is provided on the slide rail along the extension direction of the support rod, and a straight through hole for the fixing pin to pass through is provided on the locking device. Fixed shafts are provided at both ends of the camera assembly, and a limiting block is provided on the top of the locking device. The limiting block is detachably connected to the bottom of the locking device to form a through groove for connecting with the fixed shaft.

2. The device for detecting hidden cracks in photovoltaic cells according to claim 1, characterized in that: The locking device includes a slider slidably connected to a slide rail, the slider is arranged at the bottom of the locking device, a first arc-shaped groove is provided on the slider, a second arc-shaped groove is provided on the limit block, the limit block is detachably fixed to the slider by a first fixing pin, and the first arc-shaped groove and the second arc-shaped groove correspond to form a through groove matching the fixed axis on the camera assembly.

3. The device for detecting hidden cracks in photovoltaic cells according to claim 1, characterized in that: The camera assembly includes a camera, a camera mounting part, two or more connecting blocks 1 and 2, a camera mounting hole is provided on the camera mounting part at a position on the central axis, the camera is fixedly mounted on the mounting hole, two ends of the camera mounting part are fixedly connected to one end of the connecting block 1, and the connecting block 2 is fixedly mounted on one side of the connecting block 1.

4. The device for detecting hidden cracks in photovoltaic cells according to claim 3, characterized in that: One end of the fixed shaft is fixed to one side of the second connecting block, and the other end of the fixed shaft is embedded in a circular groove formed corresponding to the first arc-shaped groove and the second arc-shaped groove.

5. The device for detecting hidden cracks in photovoltaic cells according to claim 2, characterized in that: The sliding block is provided with through holes matching the fixing pins on both sides of the first arc-shaped slot, and the limiting block is provided with through holes matching the fixing pins on both sides of the second arc-shaped slot.

6. The device for detecting hidden cracks in photovoltaic cells according to claim 1, characterized in that: The support rod is configured as an L-shaped rod, one end of the support rod is fixed to one side of the upper end of the column, and the other end of the support rod is perpendicular to the column and extends horizontally outward.

7. The device for detecting hidden cracks in photovoltaic cells according to claim 1, characterized in that: A light source mounting block is arranged on the inner side of the column. The light source mounting block is fixed on the column by bolts. Both ends of the irradiation light source are fixedly mounted on the light source mounting block.

8. The device for detecting hidden cracks in photovoltaic cells according to claim 1, characterized in that: One side surface of the support rod is provided with length scale lines, and one side surface of the sliding block is provided with angle scale lines.

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