Universal detection device for solar cells in flower baskets in different process sections

Abstract

According to the universal detection device for the solar cells in the baskets in the different process sections, a basket frame is arranged below a hanging bracket top plate in a transverse moving and hanging mode through a basket moving groove, the hanging bracket top plate is a cross-shaped hanging plate, and a moving detection mechanism and a polishing mechanism are arranged at the front end and the rear end of the hanging bracket top plate respectively; the movable detection mechanism comprises a vertical guide column, a movable sliding block, a detection camera and a camera lighting plate, the lighting mechanism comprises a rear side main lamp panel and a side face auxiliary lamp panel, and the light inlet amount of the detection camera is fully guaranteed in the mode that the camera lighting plate conducts lighting along with movement of the camera; the distance-adjustable rear-side main lamp panel on the back surface ensures that basket racks with different sizes can adjust the basic backlight effect without adjusting the exposure parameters of a camera, and the adjustable side-surface auxiliary lamp panels are arranged on the two sides, so that the detection of small broken corners and small gaps of the edge of a battery piece can be realized; and the detection precision of the edge damage of the battery piece in the flower basket is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of solar cell row detection in a flower basket, and specifically relates to a universal detection device for solar cell sheets in flower baskets at different process stages. Background Art

[0002] After the wet process, the solar cell needs to undergo diffusion, annealing, oxidation and other processes. It is usually necessary to place it in a heating furnace and heat it at a constant temperature for a certain period of time to change the crystallization and bonding degree of the cell, thereby improving the photoelectric conversion efficiency of the solar cell. When the solar cell is placed in the heating furnace, a carrying basket is needed to load the solar cell. With the development of technology and industry, the cell is developing in the direction of larger and thinner size, and the cell shape and appearance in each process section are significantly different in the basket. Although the solar cell inspection equipment and inspection methods currently commonly used in the market can realize the inspection of liquid, fragments, stacked cells, empty cells, single-sided misaligned teeth, and broken pieces, the inspection effect cannot meet the inspection requirements under various process sections because the inspection mechanism cannot be flexibly adjusted and the color and surface characteristics of the cells in each process section are inconsistent.

[0003] Therefore, it is necessary to develop a flexible and universal detection system and method for solar cells in baskets at different process stages to solve the impact of different processes and different cell forms on the detection of small notches, small corners, double cells, and stacked cells on the edge of the cell in the basket. This will greatly reduce the defect rate caused by such problems in the industry and improve production efficiency and product quality. Summary of the invention

[0004] In order to solve the above problems, this paper proposes a universal detection device for solar cell sheets in flower baskets of different process sections. A mobile detection mechanism is provided on the front side of the flower basket frame, and a lighting mechanism is provided on the rear side of the flower basket frame. The flower basket frame is horizontally movable and hoisted through a flower basket movable groove and is arranged below the top plate of the hanger. The top plate of the hanger is in the shape of a cross-shaped hanger plate. A mobile detection mechanism and a lighting mechanism are respectively provided at the front and rear ends of the top plate of the hanger. A flower basket movable groove is horizontally penetrated on the bottom surface of the top plate of the hanger. The mobile detection mechanism includes a vertical guide column, a mobile slider, a detection camera and a camera lighting plate. The camera lighting plate is arranged on the outside of the detection camera. The end faces of the camera lighting plate and the detection camera are parallel to the front surface of the flower basket frame. The lighting mechanism includes a rear main light panel and a side auxiliary light panel. The rear main light panel and the flower basket frame are parallel to each other. The rear sides are arranged parallel to each other at the bottom of the hanger top plate, the rear main light panel is movably connected to the hanger top plate through the main light panel moving groove, and side auxiliary light panels are symmetrically arranged on both sides of the rear main light panel, and the side auxiliary light panels are arranged on both sides of the flower basket rack in a directional manner, and the side auxiliary light panels are connected to the front end of the auxiliary light panel bracket in a vertical axis manner. The top surface of the auxiliary light panel bracket is movably connected to the hanger top plate through the auxiliary light panel moving groove, and the camera lighting board is used to illuminate as the camera moves to fully ensure the amount of light entering the detection camera. The rear main light panel with adjustable distance on the back ensures that flower basket racks of different sizes can adjust the basic backlight effect without adjusting the camera exposure parameters. The adjustable side auxiliary light panels on both sides can realize the detection of small corners and small gaps on the edge of the battery cell, thereby improving the detection accuracy of the edge damage of the battery cell in the flower basket.

[0005] The shape of the hanger top plate is a cross-shaped hanging plate, a flower basket moving groove is provided horizontally through the middle of the bottom surface of the hanging top plate, and a main light board moving groove and a sub-light board moving groove are provided longitudinally and parallelly on the rear side of the bottom surface of the hanging top plate. The flower basket moving groove is horizontally arranged on both sides of the protruding edges on the left and right sides of the hanging top plate, and the spacing between the main light board moving groove and the adjacent sub-light board moving grooves on both sides is greater than half the width of the rear main light board. Through the form of a cross-shaped hanger, the detection device that was originally open and vertically arranged can be changed to a hanging type, which can effectively block the natural light or other shadows on the top from affecting the flower basket frame, thereby affecting the shooting effect of the detection camera, and the flower basket moving groove can move several flower basket frames for detection in sequence in an assembly line manner, thereby achieving efficient and automated detection effects.

[0006] The shape of the flower basket frame is a vertical rectangular hanging frame, and a plurality of flower basket columns are arranged on the left, right and rear sides of the flower basket frame, and a plurality of battery sheets are arranged on the flower basket column bracket in a transverse parallel plug-in and stacked manner.

[0007] The vertical guide column is vertically arranged in the middle of the front end of the top plate of the hanger. A movable slider is arranged on the outer side of the vertical guide column so as to move up and down. The movable slider is in the shape of a rectangular electric-controlled slider. A detection camera is arranged on the inner surface of the movable slider in the center protrudingly. The detection camera is a fixed-focus large-aperture lens. A camera lighting board is arranged on the outer side of the outer end of the detection camera. The camera lighting board is in the shape of a rectangular board. A through hole is arranged in the center of the camera lighting board. The center of the through hole of the camera lighting board is aligned with the center of the detection camera. The rear side of the camera lighting board is fixedly connected to the movable slider through a bracket. The original fixed light source and fixed angle detection method is improved to a variable light source, adjustable angle, and focal length detection method, and a camera lighting board and a side auxiliary light board are added. By adjusting different light sources to cooperate with the high dynamic range function of the camera and scanning the flower basket to be detected multiple times at different angles, dynamic capture can not only fully present the surface features of the battery cell in the imaging, but also capture the damaged features of the edge of the battery cell.

[0008] The rear main light panel is a vertical high-power rectangular light panel. A soft light cover is provided on the outside of the rear main light panel. The top of the rear main light panel is longitudinally movable and connected to the main light panel moving slot. The rear main light panel can be moved back and forth to achieve adjustable range backlighting. According to the actual size of the flower basket stand and the gap between the internal cells, the light source effect of the back of the flower basket stand passing through the cells is fully guaranteed.

[0009] The side auxiliary light panel is a vertical auxiliary shadow removal and fill light panel, which is connected to the auxiliary light panel bracket in a vertical left and right rotating manner. The inner light emitting surfaces of the side auxiliary light panels are all facing the flower basket rack. The auxiliary light panel bracket is a vertical rectangular plate longitudinally arranged on the bottom surface of the auxiliary light panel moving groove. The front side of the auxiliary light panel bracket is vertically provided with a rotating shaft, and the outer side of the rotating shaft is electrically controlled with a side auxiliary light panel. The side auxiliary light panel can not only adjust the rotation angle of the vertical axis through the auxiliary light panel bracket, but also can be adjusted front and back through the auxiliary light panel moving groove. It can not only realize multi-angle changes, but also can avoid flower basket racks of different sizes, thereby ensuring the overall automation effect.

[0010] Beneficial effects:

[0011] The commonly used detection equipment and detection methods for solar cells can only detect double cells, empty cells, single-sided misaligned teeth, broken cells, and fragments with liquid, but cannot detect small corners and small gaps on the edge of the cell. The existing lighting method of the rear main light panel can detect liquid, liquid-containing fragments, and misaligned teeth defects on the surface of the cell. Now, the camera lighting panel is used to illuminate as the camera moves to fully ensure the amount of light entering the detection camera. The rear main light panel with adjustable distance on the back ensures that flower baskets of different sizes can adjust the basic backlight effect without adjusting the camera exposure parameters. The adjustable side auxiliary light panels on both sides can detect small corners and small gaps on the edge of the cell, thereby improving the detection accuracy of edge damage of the cell in the flower basket.

[0012] The cross-shaped hanger can be used to change the originally open vertical detection device into a hoisting type, which can effectively block the natural light or other shadows on the top that may affect the flower basket stand, thereby affecting the shooting effect of the detection camera. The flower basket moving slot can move several flower basket stands for detection in sequence in an assembly line manner, thereby achieving efficient and automated detection effects.

[0013] The original fixed light source and fixed angle detection method was improved to a variable light source, adjustable angle and focal length detection method, and a camera lighting board and a side auxiliary light board were added. By adjusting different light sources to cooperate with the camera's high dynamic range function and scanning the flower basket to be inspected multiple times at different angles, dynamic capture can not only fully present the surface features of the battery cell in the image, but also capture the damaged features at the edge of the battery cell.

[0014] Adjustable range backlighting is achieved by using the rear main light panel that can be moved forwards and backwards. According to the actual size of the flower basket stand and the gap between the internal cells, sufficient light source effect through the cells on the back of the flower basket stand is ensured.

[0015] The side auxiliary light panel can not only adjust the rotation angle of the vertical axis through the auxiliary light panel bracket, but also can be adjusted front and back through the auxiliary light panel moving slot. It can not only achieve multi-angle changes, but also avoid flower basket stands of different sizes, ensuring the overall automation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of a universal detection device for solar cells in baskets at different process stages;

[0017] Figure 2 It is a schematic diagram of the elevation angle of a universal detection device for solar cell sheets in flower baskets at different process stages;

[0018] Figure 3It is a bottom view of a universal detection device for solar cells in baskets at different process stages;

[0019] In the figure; 1. top plate of the hanger, 2. flower basket rack, 3. movable slot for flower basket, 4. vertical guide column, 5. movable slider, 6. detection camera, 7. camera lighting board, 8. rear main light board, 9. movable slot for main light board, 10. auxiliary light board bracket, 11. side auxiliary light board, 12. movable slot for auxiliary light board. DETAILED DESCRIPTION

[0020] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0021] Hanger top plate 1, flower basket frame 2, flower basket moving slot 3, vertical guide column 4, moving slider 5, detection camera 6, camera lighting board 7, rear main light panel 8, main light panel moving slot 9, auxiliary light panel bracket 10, side auxiliary light panel 11, auxiliary light panel moving slot 12.

[0022] like Figure 1 , 2 , as shown in 3;

[0023] A universal detection device for solar cells in flower baskets of different process stages, wherein a mobile detection mechanism is provided on the front side of a flower basket frame 2, and a lighting mechanism is provided on the rear side of the flower basket frame 2. The flower basket frame 2 is horizontally movable and hoisted through a flower basket moving groove 3 and is arranged below a hanger top plate 1. The hanger top plate 1 is in the shape of a cross-shaped hanger plate. A mobile detection mechanism and a lighting mechanism are provided at the front and rear ends of the hanger top plate 1, respectively. A flower basket moving groove 3 is provided horizontally through the bottom surface of the hanger top plate 1. The mobile detection mechanism comprises a vertical guide column 4, a mobile slider 5, a detection camera 6 and a camera lighting plate 7. The camera lighting plate 7 is arranged on the outside of the detection camera 6, and the end faces of the camera lighting plate 7 and the detection camera 6 are mutually contacted with the front side surface of the flower basket frame 2. The lighting mechanism comprises a rear main light panel 8 and a side auxiliary light panel 11. The rear main light panel 8 and the rear side of the flower basket rack 2 are arranged at the bottom of the hanger top plate 1 in parallel with each other. The rear main light panel 8 is movably connected to the hanger top plate 1 through the main light panel moving groove 9. The two sides of the rear main light panel 8 are symmetrically provided with side auxiliary light panels 11. The side auxiliary light panels 11 are all arranged on both sides of the flower basket rack 2 in a directional manner. The side auxiliary light panels 11 are vertically connected to the front end of the auxiliary light panel bracket 10. The top surface of the auxiliary light panel bracket 10 is movably connected to the hanger top plate 1 through the auxiliary light panel moving groove 12. The shape of the hanger top plate 1 is a cross-shaped hanging plate. The middle part of the bottom surface of the hanging top plate is horizontally penetrated with a flower basket moving groove 3. The rear side of the bottom surface of the hanging top plate A main light panel moving groove 9 and a sub-light panel moving groove 12 are provided in a longitudinally parallel manner. The flower basket moving groove 3 is horizontally arranged on both sides of the protruding edges on the left and right sides of the hanging top plate. The spacing between the main light panel moving groove 9 and the adjacent sub-light panel moving grooves 12 on both sides is greater than half the width of the rear main light panel 8. The flower basket frame 2 is in the shape of a vertical rectangular hanging frame. A plurality of flower basket columns are provided on the left, right and rear sides of the flower basket frame 2. The flower basket column bracket is horizontally parallel, plugged and stacked with a plurality of battery cells. The vertical guide column 4 is vertically arranged in the middle of the front end of the hanger top plate 1. A movable slider 5 is provided on the outer side of the vertical guide column 4 for moving up and down movement. The movable slider 5 is in the shape of a rectangular electric control slider, and the center of the inner surface of the movable slider 5 is protruding. A detection camera 6 is provided, and the detection camera 6 is a fixed-focus large-aperture lens. A camera lighting plate 7 is provided on the outer side of the outer end of the detection camera 6. The camera lighting plate 7 is in the shape of a rectangular plate. A through hole is provided in the center of the camera lighting plate 7. The center of the through hole of the camera lighting plate 7 is aligned with the center of the detection camera 6. The rear side of the camera lighting plate 7 is fixedly connected to the movable slider 5 through a bracket. The rear main light board 8 is a vertical high-power rectangular light board. A soft light cover is provided on the outer side of the rear main light board 8. The top end of the rear main light board 8 is longitudinally movable and connected to the main light board moving groove 9. The side auxiliary light board 11 is a vertical auxiliary shadow-removing and fill-light board. The side auxiliary light board 11 is vertically rotatable left and right and connected to the auxiliary light board bracket 10.The inner luminous surface of the side auxiliary light panel 11 faces the flower basket frame 2. The auxiliary light panel bracket 10 is a vertical rectangular plate longitudinally arranged on the bottom surface of the auxiliary light panel moving groove 12. The front side of the auxiliary light panel bracket 10 is vertically provided with a rotating shaft, and the outer side of the rotating shaft is electrically controlled and provided with the side auxiliary light panel 11.

[0024] Implementation examples;

[0025] A camera lighting board 7 and an adjustable side auxiliary light board 11 are added to the original backlight solution. The camera lighting board 7 is a camera lighting board 7 mounted on the camera side, which follows the movement of the camera, solving some defects that cannot be captured by the rear main light board 8. The side auxiliary light board 11 assists in solving the problem that the side of the open flower basket stand 2 cannot be illuminated by light, thereby fully illuminating the obstructed areas of the flower basket column, so as to capture the small gaps and corners of the battery cell in the surface flower basket stand 2, thereby realizing the capture of the damaged edge of the cell.

[0026] A camera lighting board 7 and a side auxiliary light board 11 are added to the camera surface, and the front edge and side edge of the flower basket battery are illuminated in coordination with the angle of the camera for secondary shooting, so as to capture defects such as edge gaps and missing corners.

[0027] When the line scan camera moves from top to bottom, the backlight source is turned on and the front light source is turned off. When the camera moves from bottom to top, the front light source is turned on and the backlight source is turned off. During the above movement, the side auxiliary light panels 11 remain in a normally open state to ensure sufficient side lighting.

[0028] All light sources work with the camera's custom-developed high dynamic range function to take turns acquiring multiple images of different brightness within one scanning cycle. Through algorithm processing, it is able to capture various defects in battery cells at different process stages and enhance the contrast between defects and background.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A universal detection device for solar cells in flower baskets of different process stages, wherein a mobile detection mechanism is provided on the front side of the flower basket frame and a lighting mechanism is provided on the rear side of the flower basket frame, characterized in that: The flower basket stand is installed under the top plate of the hanger in a horizontally movable hoisting manner through a flower basket moving groove. The top plate of the hanger is in the shape of a cross-shaped hanger plate. The front and rear ends of the top plate of the hanger are respectively provided with a moving detection mechanism and a lighting mechanism. The bottom surface of the top plate of the hanger is horizontally penetrated with a flower basket moving groove. The moving detection mechanism includes a vertical guide column, a moving slider, a detection camera and a camera lighting plate. The camera lighting plate is arranged on the outside of the detection camera. The end faces of the camera lighting plate and the detection camera are both in contact with the front side surface of the flower basket stand. Parallel to each other, the lighting mechanism includes a rear main light panel and a side auxiliary light panel, the rear main light panel and the rear side of the flower basket rack are arranged at the bottom of the hanger top plate in parallel with each other, the rear main light panel is movably connected to the hanger top plate through the main light panel moving groove, and side auxiliary light panels are symmetrically arranged on both sides of the rear main light panel, and the side auxiliary light panels are both oriented and arranged on both sides of the flower basket rack, the side auxiliary light panels are vertically connected to the front end of the auxiliary light panel bracket, and the top surface of the auxiliary light panel bracket is movably connected to the hanger top plate through the auxiliary light panel moving groove.

2. A universal detection device for solar cells in baskets of different process stages according to claim 1, characterized in that: The shape of the hanger top plate is a cross-shaped hanging plate, and a flower basket moving groove is provided horizontally through the middle of the bottom surface of the hanging top plate, and a main light board moving groove and a sub-light board moving groove are provided longitudinally and parallelly on the rear side of the bottom surface of the hanging top plate. The flower basket moving groove is horizontally arranged on both sides of the protruding edges on the left and right sides of the hanging top plate, and the spacing between the main light board moving groove and the adjacent sub-light board moving grooves on both sides is greater than half the width of the rear main light board.

3. The universal detection device for solar cells in baskets of different process stages according to claim 1 is characterized in that: The flower basket frame is in the shape of a vertical rectangular hanging frame, and a plurality of flower basket columns are arranged on the left, right and rear sides of the flower basket frame. The flower basket column bracket is arranged with a plurality of battery sheets in a transverse parallel plug-in and stacked manner.

4. The universal detection device for solar cells in baskets of different process stages according to claim 1 is characterized in that: The vertical guide column is vertically arranged in the middle of the front end of the top plate of the hanger, and a movable slider is provided on the outside of the vertical guide column to move up and down. The movable slider is shaped like a rectangular electric-controlled slider, and a detection camera is protruded in the center of the inner surface of the movable slider. The detection camera is a fixed-focus large-aperture lens, and a camera lighting plate is outsourced on the outer side of the outer end of the detection camera. The camera lighting plate is shaped like a rectangular plate, and a through hole is provided in the center of the camera lighting plate. The center of the through hole of the camera lighting plate is aligned with the center of the detection camera, and the rear side of the camera lighting plate is fixedly connected to the movable slider through a bracket.

5. The universal detection device for solar cells in baskets of different process stages according to claim 1 is characterized in that: The rear main light panel is a vertical high-power rectangular light panel, a soft light cover is arranged on the outer side of the rear main light panel, and the top end of the rear main light panel is longitudinally movable and connected to the main light panel moving groove.

6. The universal detection device for solar cells in baskets of different process stages according to claim 1 is characterized in that: The side auxiliary light panel is a vertical auxiliary shadow removal and fill light panel, which is connected to the auxiliary light panel bracket in a vertical and left-right rotating manner. The inner light emitting surfaces of the side auxiliary light panels are all facing the flower basket rack. The auxiliary light panel bracket is a vertical rectangular plate longitudinally arranged on the bottom surface of the auxiliary light panel moving groove, and the front side of the auxiliary light panel bracket is vertically provided with a rotating shaft, and the outer side of the rotating shaft is electrically controlled and provided with a side auxiliary light panel.

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