CN220585189U - Photovoltaic sheet integrated detection device - Google Patents

Abstract

The utility model provides a photovoltaic sheet integrated detection device which comprises an electric control system and a flaw detection station, wherein the flaw detection station comprises a first flaw detection station and a second flaw detection station, the second flaw detection station comprises a second conveying line, a turnover mechanism, second flaw A face detection equipment and second flaw B face detection equipment, and the turnover mechanism is used for turning a photovoltaic cell from an A face to a B face upwards in the conveying process. The flaw detection station comprises the first flaw detection station and the second flaw detection station, and the first flaw detection station and the second flaw detection station are connected through the first conveying line and the second conveying line, so that the integration level of the first flaw detection station and the second flaw detection station is integrated, the integration level of the whole machine is improved, and the labor and the occupied area are saved.

Description

Photovoltaic sheet integrated detection device

Technical Field

The utility model belongs to the technical field of photovoltaic sheet detection devices, and particularly relates to a photovoltaic sheet integrated detection device.

Background

In the technical field of solar photovoltaics, photovoltaic silicon chips and photovoltaic cell chips are important components, and EL or PL detection and AOI detection are required to judge whether defects exist.

The EL detection, namely the electroluminescence detection, is to use the electroluminescence principle of crystalline silicon to shoot a near infrared image of the crystalline silicon by matching with a high-resolution infrared camera, analyze and process the acquired imaging image through image software, and detect whether the photovoltaic sheet has hidden cracks, fragments, virtual welding, broken grids and abnormal single-chip batteries with different conversion efficiencies.

PL detection, namely photoluminescence detection, uses laser with specific wavelength as an excitation light source to provide photons with certain energy, ground state electrons in a silicon wafer enter an excited state after absorbing the photons, near infrared light with a peak of about 1150nm is released, then a high-sensitivity high-resolution camera is used for sensitization and imaging, and then the images are analyzed and processed through software to detect whether a photovoltaic sheet has hidden cracks, fragments, virtual welding, broken grids and abnormal single-chip batteries with different conversion efficiencies.

AOI detection, automatic optical detection, is based on optical principles to detect chromatic aberration, size, etc. of photovoltaic sheets, etc. for sorting.

In the prior art, the detection equipment of the photovoltaic sheet is generally of a split type design, the integration level is low, the occupied space is large, and the cost is high; and need unloading in many times, for example go on EL (or PL), AOI detected battery piece, after the detection finishes on EL check out test set, carry again to AOI check out test set on, lead to detection efficiency low, and the unloading also can cause damage, the loss of battery piece in many times, lead to manufacturing cost to improve.

Disclosure of Invention

The utility model provides a photovoltaic sheet integrated detection device, which can solve the problems that in the prior art, the detection efficiency of a photovoltaic sheet is low, and a battery piece is easy to damage due to the need of feeding and discharging for multiple times when detecting various projects.

In order to solve the technical problems, the technical scheme adopted by the utility model is that the photovoltaic sheet integrated detection device comprises an electric control system and a flaw detection station, wherein the flaw detection station comprises:

the first flaw detection station comprises first flaw detection equipment and a first conveying line, wherein the first flaw detection equipment is used for carrying out first flaw detection on the photovoltaic sheet; the first conveying line is used for inputting and outputting the photovoltaic sheet into and out of the first flaw detection device;

the second flaw detection station comprises a second conveying line, a turnover mechanism, second flaw A surface detection equipment for detecting flaws on the A surface of the photovoltaic sheet and second flaw B surface detection equipment for detecting flaws on the B surface of the photovoltaic sheet, wherein the A surface is one of the front surface and the back surface of the photovoltaic sheet, and the B surface is the other surface; the second conveying line is connected with the first conveying line and sequentially passes through the second flaw A face detection device, the turnover mechanism and the second flaw B face detection device, and the turnover mechanism is used for turning over the photovoltaic sheet conveyed by the second conveying line from the surface A to the surface B in the conveying process.

The first flaw detection device includes an EL detection device and/or a PL detection device;

the EL detection device comprises an EL detection camera and an electrifying module, wherein the EL detection camera is positioned above the electrifying module, the electrifying module comprises a probe assembly and a conductive component, the probe assembly and the conductive component are respectively positioned above and below a conveying line body of the first conveying line and are used for respectively contacting a plurality of grid lines on the A face and a plurality of grid lines on the B face of the photovoltaic sheet, the probe assembly comprises a plurality of first probe rows which are arranged along the arrangement direction of the grid lines on the A face or the B face, and the first probe rows and the conductive component are respectively externally connected with a power supply to electrify the photovoltaic sheet;

the PL detection device includes a PL detection camera located above the conveyor line body of the first conveyor line.

The EL detection device further includes a clamping assembly for driving the probe assembly and the conductive member to move relative or opposite to contact and clamp or disengage the photovoltaic sheet.

The clamping assembly comprises a clamping driving mechanism, an upper clamping support and a lower clamping support which are arranged vertically oppositely, the probe assembly is arranged on the upper clamping support, the conductive part is arranged on the lower clamping support, and the clamping driving mechanism drives the upper clamping support and the lower clamping support to move vertically and synchronously oppositely or reversely.

The first flaw detection device further comprises a guide assembly which is matched with the upper clamping support and the lower clamping support in a sliding guide mode respectively so as to guide the vertical movement of the upper clamping support and the lower clamping support.

The distance between two adjacent first probe rows is adjustable.

The turnover mechanism comprises a turnover wheel and a turnover driving component for driving the turnover wheel to turn over, the turnover wheel comprises a rotating shaft and a wheel body coaxially and fixedly connected with the rotating shaft, an even number of battery piece slots are radially arranged on the wheel body, the battery piece slots are uniformly distributed along the circumferential direction of the wheel body, and each battery piece slot extends along the radial direction of the wheel body and is outward in notch.

Among the even number battery piece slot, including the battery piece slot of multiple degree of depth difference, its quantity of battery piece slot of each degree of depth is even and follows the circumference of wheel body evenly distributes.

The wheel body comprises two round wheel discs which are aligned with each other and have the same structure and size, the round wheel discs are fixedly connected with the rotating shaft in a coaxial way, each battery piece slot consists of two sub slots respectively formed on the two round wheel discs, the sub slots on each round wheel disc are uniformly distributed along the circumferential direction of the sub slots, and each sub slot extends along the radial direction of the round wheel disc and is outward in the notch.

The second flaw A surface detection device and the second flaw B surface detection device are both AOI detection devices.

Compared with the prior art, the utility model has the following advantages and positive effects:

1. the defect detection station comprises a first defect detection station and a second defect detection station, which are used for detecting the first defect and the second defect of the photovoltaic sheet respectively, and a first conveying line of the first defect detection station is connected with a second conveying line of the second defect detection station, so that the integration level of the second defect detection station of the first defect detection station is integrated, the integration level of the whole machine is improved, and the labor and the occupied area are saved;

2. the second flaw detection station is provided with tilting mechanism, second flaw A face check out test set, second flaw B face check out test set, can carry out the flaw respectively to the positive and negative of photovoltaic sheet, makes photovoltaic sheet detect more comprehensively, and the suitability is wider.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

FIG. 1 is a perspective view of an integrated photovoltaic sheet inspection apparatus in accordance with an embodiment of the present utility model;

FIG. 2 is a perspective view of a first flaw detection station according to an embodiment of the present utility model;

FIG. 3 is a perspective view of a first flaw detection station with the EL detection device housing omitted in an embodiment of the present utility model;

fig. 4 is an enlarged view of a portion a of fig. 3;

FIG. 5 is a perspective view showing a partial structure of an EL inspection device according to an embodiment of the present utility model;

fig. 6 is an enlarged view of a portion B of fig. 5;

fig. 7 is a perspective view showing another view of a partial structure of an EL detecting apparatus according to an embodiment of the present utility model;

FIG. 8 is a schematic diagram showing a configuration of a location of a PL detection device in an embodiment of the present utility model;

FIG. 9 is a perspective view of a dual-station feed and discharge line in accordance with an embodiment of the present utility model;

FIG. 10 is a perspective view of a tray according to an embodiment of the present utility model;

FIG. 11 is a front view of the bottom surface of a tray according to an embodiment of the utility model;

FIG. 12 is a schematic diagram of an integrated structure of a first flaw detection station and a dual-station feeding/discharging line according to an embodiment of the present utility model;

FIG. 13 is a perspective view of a second flaw detection station according to an embodiment of the present utility model;

FIG. 14 is a perspective view of a turnover mechanism of a second flaw detection station according to an embodiment of the present utility model;

FIG. 15 is a perspective view of a circular wheel of the tilting mechanism in accordance with an embodiment of the present utility model;

FIG. 16 is a perspective view of a sorting station in an embodiment of the present utility model;

FIG. 17 is a perspective view of a sorting station with a sorting frame omitted in an embodiment of the present utility model;

FIG. 18 is a front elevational view of FIG. 17;

FIG. 19 is a block diagram of a lift-up conveyor for a sorting station in an embodiment of the utility model;

FIG. 20 is a block diagram of a lift-up conveyor of a sorting station with a position sensor omitted in an embodiment of the present utility model;

FIG. 21 is a block diagram of a lifting and conveying mechanism of a sorting station in an embodiment of the present utility model after omitting a position sensor and lifting a support plate;

FIG. 22 is a block diagram of the transport branches of a sorting station in accordance with an embodiment of the present utility model;

FIG. 23 is a block diagram of a sorting magazine of a sorting station in an embodiment of the present utility model;

FIG. 24 is a block diagram of a sorting magazine of a sorting station in an embodiment of the present utility model with the upper mounting block omitted;

FIG. 25 is a block diagram of a tray of a sorting magazine of a sorting station in an embodiment of the present utility model;

fig. 26 is a partial cross-sectional view of a sorting deck mounted with a sorting magazine in an embodiment of a light Fu Piancai sorting station according to the present utility model.

Reference numerals: 1. the photovoltaic sheet integrated detection device;

10000. a first flaw detection station; 11000. an EL detection device; 11100. an EL detection camera; 11200. a power-on module; 11210. a probe assembly; 11211. a first probe row; 11220. a conductive plate; 11221. a protruding portion; 11222. a clearance part; 11223. a main body conductive plate; 11224. a side conductive plate; 11300. a clamping assembly; 11310. a clamping driving mechanism; 11311. a motor; 11312. a belt drive mechanism; 11320. an upper clamping bracket; 11321. an upper bracket main body; 11322. a support rod; 11323. a connecting block; 11330. a lower clamping bracket; 11331. a lower bracket main body; 11332. a support beam; 11333. a stop portion; 11340. a connecting plate; 11400. a guide assembly; 11500. a support frame body; 11510. a horizontal fixing plate; 11520. a vertical mounting plate; 11530. a through part; 12000. PL detection device; 13000. a first conveyor line; 14000. a transverse centering mechanism; 14100. a lateral movement member; 14200. a base; 14300. a roller; 15000. a first support frame;

20000. a second flaw detection station; 21000. a second conveyor line; 21100. the surface A faces upwards the product conveying line; 21200. b faces up the product conveying line; 22000. a turnover mechanism; 22100. turning wheels; 22110. a rotating shaft; 22120. a wheel body; 22121. a circular wheel disc; 22122. a sub slot; 22130. a battery slot; 22200. a flip driving part; 22300. a support base; 23000. a second flaw A-surface detection device; 24000. a second flaw B-face detection device; 25000. a second support frame;

30000. A sorting station; 31000. a sorting support frame 31100, a sorting platform; 32000. sorting conveying lines; 33000. a jacking and conveying mechanism; 33100. a first mount; 33200. a second mounting base; 33210. a base station; 33220. a first side plate; 33221. avoiding the chute; 33230. a second side plate; 33300. a jack-up driving unit; 33400. a transmission driving unit; 33500. jacking the power transmission unit; 33510. a synchronizing shaft; 33520. a first power transmission section; 33521. a first drive wheel set; 33522. a tensioning wheel; 33523. a first conveyor belt; 33530. a second power transmission section; 33600. jacking the supporting plate; 33610. avoidance holes; 33700. a position sensor; 33800. a tensioning device; 33810. a first mounting block; 33820. a first stud; 33830. a second mounting block; 33831. a strip-shaped hole; 34000. a conveying branch; 34100. a carriage; 34200. a conveyance driving unit; 34300. sorting power transmission unit; 34400. a carrying plate; 35000. a blanking box; 35100. a box body mounting seat; 35110. an upper mounting seat; 35111. inward flanging; 35120. a lower mounting seat; 35121. turning up the edge outwards; 35200. a lifting mechanism; 35300. a tray; 35310. a transverse support plate; 35311. an avoidance unit; 35320. a vertical baffle; 35400. a part detection sensor; 35500. a magazine body; 35510. a cartridge base; 35520. a magazine side plate; 35600. a guide mechanism; 35610. a guide rod; 35620. a guide cylinder;

40000. Double-station feeding and discharging lines; 41000. a first feeding line; 42000. a second feeding line; 43000. a double-station material taking and discharging mechanism; 43100. a lateral movement module; 43200. a vertical moving module; 43300. a material taking sucker; 44000. a material tray; 44100. a tray frame; 44110. a frame base plate; 44111. a long mounting hole; 44120. a frame side column; 44200. a battery piece supporting plate; 44210. a positioning groove; 45000. a battery piece jacking mechanism; 46000. an air blowing device; 47000. a tray lifting mechanism; 48000. a tray stop mechanism;

2. a photovoltaic cell; 21. and a gate line.

Detailed Description

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Referring to fig. 1, a photovoltaic sheet integrated inspection apparatus 1 in this embodiment includes an electrical control system and a flaw detection station, where the flaw detection station includes a first flaw detection station 10000 and a second flaw detection station 20000.

Referring to fig. 2 to 8, the first defect detection station 10000 includes a first defect detection device and a first conveying line 13000, where the first defect detection device is configured to perform first defect detection on a photovoltaic sheet (in this embodiment, the photovoltaic sheet 2 is a photovoltaic wafer, which may of course also be a photovoltaic silicon wafer, and herein, the photovoltaic sheet 2 is taken as an example); the first conveying line 13000 is used for inputting and outputting the photovoltaic cell sheet 2 to and from the first flaw detection apparatus.

Referring to fig. 12 to 15, the second defect detecting station 20000 includes a second conveying line 21000, a turning mechanism 22000, a second defect a-side detecting device 23000 for detecting a defect on a surface of the photovoltaic cell, and a second defect B-side detecting device 24000 for detecting a defect on a B-side of the photovoltaic cell, where the a-side is one of a front surface and a back surface of the photovoltaic cell 2, and the B-side is the other surface. The second conveying line 21000 is connected with the first conveying line 13000, and the second conveying line 21000 sequentially passes through the second flaw a surface detection device 23000, the turnover mechanism 22000 and the second flaw B surface detection device 24000 so as to sequentially convey the photovoltaic cell 2 to the second flaw a surface detection device 23000, the turnover mechanism 22000 and the second flaw B surface detection device 24000; the turning mechanism 22000 is used for turning the photovoltaic cell 2 conveyed by the second conveying line 21000 from the surface A to the surface B upwards in the conveying process, that is, turning the front and the back of the photovoltaic cell 2 is realized.

The electric control system is used as a data and information processing center of the whole photovoltaic cell detection device, and can be realized by using a PLC module.

As shown in fig. 2 to 8, for the first defect detecting station 10000, the first defect detecting device includes an EL detecting device 11000 and/or a PL detecting device 12000, where the EL detecting and PL detecting can both detect hidden cracks, fragments, virtual soldering, broken grids and abnormal phenomena of single cells with different conversion efficiencies, the EL detecting is a contact type detecting, the PL detecting is a non-contact type detecting, and a user can select according to actual detecting conditions.

For the EL detection device 11000, the detection principle is the same as that of the prior art, that is, by using the electroluminescence principle of crystalline silicon and matching with a high-resolution infrared camera to shoot a near infrared image of crystalline silicon, the acquired imaging image is analyzed and processed through image software, and whether the photovoltaic cell has hidden cracks, fragments, virtual welding, broken grids and abnormal single-chip cells with different conversion efficiencies are detected. The main structure of the EL detection apparatus 11000 includes an EL detection camera 11100 and an energizing module 11200, the EL detection camera 11100 is located above the energizing module 11200, specifically directly above, the lens end of the EL detection camera 11100 faces downward, and the energizing module 11200 in this embodiment is different from the structure in the prior art.

Specifically, the energizing module 11200 includes a probe assembly 11210 and an electrically conductive member, where the probe assembly 11210 and the electrically conductive member are respectively located above and below the conveying line body of the first conveying line 13000, in this embodiment, to detect that the photovoltaic cell a faces upward, that is, the front face faces upward for EL detection, while the probe assembly 11210 is located above the conveying line body of the first conveying line 13000, and the electrically conductive member is located below the conveying line body of the first conveying line 13000, for example, then the probe assembly 11210 is used to respectively contact the plurality of grid lines 21 on the face of the photovoltaic cell a, and the electrically conductive member is used to respectively contact the plurality of grid lines 21 on the face of the photovoltaic cell B, and in this embodiment, the placement orientation of the photovoltaic cell 2 is configured such that the extending direction of each grid line 21 thereof is parallel to the conveying direction of the first conveying line 13000. The probe assembly 11210 includes a plurality of first probe rows 11211 arranged along the arrangement direction of the plurality of grid lines 21 on the a-plane (the plurality of grid lines 21 on the B-plane and the a-plane are aligned one by one, and the arrangement direction is the same), each first probe row 11211 contacts one grid line 21 correspondingly, the first probe rows 11211 and the conductive component are respectively externally connected with a power supply, and after the first probe rows 11211 and the conductive component contact the plurality of grid lines 21 on the a-plane and the B-plane of the photovoltaic cell respectively, the power supply to the photovoltaic cell 2 is realized, so that the EL detection is performed on the photovoltaic cell 2 in cooperation with the EL detection camera 11100.

In order to improve the reliability of the electrical connection between the probe row and the grid line 21 on the surface a, the grid line 21 on the surface a and the corresponding grid line 21 on the surface B, and the grid line 21 on the surface B and the conductive component, and further ensure the stability of the power-on loop required for the EL detection, the EL detection device 11000 further includes a clamping assembly 11300 for driving the probe assembly 11210 and the conductive component to move relatively or reversely to contact and clamp or separate from the photovoltaic cell 2. Then the probe assembly 11210 is driven by the clamping assembly 11300 to relatively move to contact with the conductive part, and the photovoltaic cell 2 is clamped and then electrified, so that the reliability of the electric connection between the electrified module 11200 and the grid line 21 can be ensured, and the stability of an electrified loop required by EL detection can be further ensured; and the clamping assembly 11300 drives the probe assembly 11210 and the conductive component to clamp the photovoltaic cell 2 in a two-way manner, so that the electrifying connection efficiency can be improved, and the EL detection efficiency can be further improved. And after the detection is finished, the clamping assembly 11300 drives the probe assembly 11210 and the conductive component to move away from the photovoltaic cell 2 oppositely so that the photovoltaic cell 2 can be conveyed to the next station.

Further, the clamping assembly 11300 includes a clamping driving mechanism 11310, an upper clamping bracket 11320 and a lower clamping bracket 11330 which are disposed opposite to each other, the upper clamping bracket 11320 is located above the lower clamping bracket 11330, the probe assembly 11210 is disposed on the upper clamping bracket 11320, the conductive component is disposed on the lower clamping bracket 11330, and the clamping driving mechanism 11310 drives the upper clamping bracket 11320 and the lower clamping bracket 11330 to move relatively or reversely along the vertical synchronization, so as to further drive the probe assembly 11210 and the conductive component to move relatively or reversely.

Specifically, the upper clamping bracket 11320 includes an upper bracket body 11321 and two opposite horizontal cantilever support rods 11322, wherein one end of each support rod 11322 is fixedly connected to the upper bracket body 11321, and the upper bracket body 11321 is connected to a moving part of the clamping driving mechanism 11310. Connecting blocks 11323 are fixedly connected to two ends of each probe row, and the connecting blocks 11323 are respectively connected to the supporting rods 11322, so that the probe assembly 11210 is installed on the upper clamping support 11320. Similarly, the lower clamp bracket 11330 includes a lower bracket body 11331 and two oppositely disposed horizontal cantilever support beams 11332, one end of the support beams 11332 is fixedly connected to the lower bracket body 11331, and the lower bracket body 11331 is connected to the moving part of the clamp driving mechanism 11310. The two ends of the conductive component are fixedly connected and supported on the lower bracket main body 11331 respectively, so that the conductive component is mounted on the lower clamping bracket 11330. By adopting the mounting mode, the structure is simple, the weight is light, the probe assembly 11210 and the conductive component can run stably, and the alignment precision with the grid line 21 is improved.

Further, a through horizontal mounting hole is formed on the connecting block 11323, the connecting block 11323 is sleeved on the supporting rod 11322 through the horizontal mounting hole and is in sliding fit with the supporting rod 11322, and the position adjustment of the probe rows can be realized through the sliding connecting block 11323, so that the distance between two adjacent probe rows can be adjusted, the device can be suitable for detecting photovoltaic cell pieces 2 of different types, and the compatibility of the device is improved; meanwhile, the probe rows are convenient to assemble and disassemble, so that the number of the probe rows is increased and decreased according to the type of the photovoltaic cell 2 to be tested, and the compatibility is further improved. Meanwhile, a fastening hole which is vertically communicated with the horizontal mounting hole is formed in the connecting block 11323, and the position of the connecting block 11323 is fixed by fastening a screw in the fastening hole, so that when the connecting block 11323 slides to a proper position along the support rod 11322, the connecting block 11323 is fixed by fastening the screw, and then the probe row is fixed.

To further enhance the operational stability of the probe assembly 11210 and the conductive member, the EL detection device 11000 in this embodiment further includes a guide assembly 11400 slidably engaged with the upper and lower clamp brackets 11320, 11330, respectively, to guide the vertical movement of the upper and lower clamp brackets 11320, 11330.

Specifically, the EL detection device 11000 further includes a support body 11500 that serves as a mounting base for the entire EL detection device 11000, and the clamping assembly 11300 and the guide assembly 11400 are mounted on the support body 11500. The supporting frame body 11500 is located at a side portion of the first conveying line 13000, and comprises a horizontal fixing plate 11510 and a vertical mounting plate 11520, a clamping driving mechanism 11310 of the clamping assembly 11300 is fixedly installed on the horizontal fixing plate 11510 and located at one side of the vertical mounting plate 11520, an upper clamping bracket 11320, a lower clamping bracket 11330 and an electrifying module 11200 are located at the other side of the vertical mounting portion, and a through portion 11530 is formed on the vertical mounting plate 11520 so as to avoid connection of the clamping driving mechanism 11310 with the upper clamping bracket 11320 and the lower clamping bracket 11330.

The guide assembly 11400 is specifically two vertical guide rails fixed on the vertical mounting plate 11520, and corresponding sliding blocks formed on the upper clamping bracket 11320 and the lower clamping bracket 11330, and the sliding blocks are in sliding guide fit with the vertical guide rails.

For the clamping driving mechanism 11310, it is specifically an electric driving mechanism, including a motor 11311 and a belt transmission mechanism 11312, the driving pulley and the driven pulley of the belt transmission mechanism 11312 are disposed on the vertical mounting plate 11520 of the supporting frame body 11500 at an upper and lower interval, and the axis is horizontal, the upper clamping bracket 11320 is connected to a vertical belt section on one side through a connection plate 11340, and the lower clamping bracket 11330 is connected to a vertical belt section on the opposite side through another connection plate 11340. The belt is driven to rotate in the forward and reverse directions by the forward and reverse rotation of the motor 11311, so that the upper clamping bracket 11320 and the lower clamping bracket 11330 are driven to move relatively or reversely. With this driving form, the upper clamping bracket 11320 and the lower clamping bracket 11330 can move synchronously relatively or reversely through the same clamping driving mechanism 11310, that is, the probe assembly 11210 and the conductive component move synchronously relatively or reversely, so that the movement of the probe assembly 11210 and the conductive component is easy to control, and the driving mechanism has simple structure and low cost.

For the conductive member, in this embodiment, the conductive plate 11220 is a copper plate, which may be the same as the probe assembly 11210, that is, a structure with multiple probe rows, for convenience of distinction, may be referred to as a second probe row, where the second probe row is disposed in a one-to-one correspondence with the first probe row 11211.

When the conductive member is a conductive plate 11220, it has a plurality of protrusions 11221, the arrangement direction of the plurality of protrusions 11221 is the same as the arrangement direction of the plurality of first probe rows 11211, and the top surface of the protrusions 11221 is a horizontal surface. When in power-on detection, the grid lines 21, the first probe rows 11211 and the corresponding convex parts 11221 are in one-to-one contact with the extruded photovoltaic cell 2 for power-on detection. By setting the contact surface of the conductive plate 11220 and the photovoltaic cell 2 as the top surfaces of the plurality of protruding portions 11221, compared with setting the top surface of the conductive plate 11220 as the entire horizontal surface, the contact area with the photovoltaic cell 2 can be reduced, and further damage to the photovoltaic cell 2 during extrusion due to high processing roughness of the contact surface and the like can be reduced.

To further improve the compatibility of the photovoltaic sheet integrated inspection apparatus 1 of this embodiment, the conductive plate 11220 in this embodiment is detachably provided on the lower clamping bracket 11330, and specifically can be fastened to the lower clamping bracket 11330 by screws. Accordingly, multiple types of conductive plates 11220 can be arranged, each conductive plate 11220 is different in size, number and spacing of the protruding portions 11221, and accordingly the corresponding conductive plate 11220 can be replaced according to the type of the photovoltaic cell 2 to be tested, and compatibility is improved.

The upper clamping bracket 11320 is located above the conveyor line body of the first conveyor line 13000, and the lower clamping bracket 11330 is located below the conveyor line body of the first conveyor line 13000, so that the probe assembly 11210 is located above the photovoltaic cell 2, the conductive component is located below the photovoltaic cell 2, and the probe assembly 11210 and the conductive component perform bidirectional clamping or separation on the photovoltaic cell 2 when moving relatively or reversely. Because when the photovoltaic cell 2 conveyed by the first conveying line 13000 arrives at the detection position and is clamped bidirectionally by the clamping assembly 11300, the conductive component is required to jack up the photovoltaic cell 2 to rise, so as to avoid interference between the conductive component and the conveying line body of the first conveying line 13000 when the conductive component rises to jack up the photovoltaic cell 2, in this embodiment, the conductive component, that is, the conductive plate 11220, is provided with a clearance portion 11222 for avoiding the conveying line body of the first conveying line 13000.

In order to ensure the position accuracy of the photovoltaic cell 2 when being clamped by the clamping component 11300 in a bidirectional manner, the sliding dislocation of the photovoltaic cell 2 is avoided, two strip-shaped stop portions 11333 positioned on two lateral sides of the photovoltaic cell 2 are formed on the lower clamping support 11330, opposite sides of the two stop portions 11333 are vertical planes, the vertical planes extend along the conveying direction of the photovoltaic cell 2, and the stop portions 11333 play a role in transversely stopping the photovoltaic cell 2 on one hand and play a role in guiding and centering on the other hand. The two ends of the vertical plane of the stop portions 11333 are inclined outwards, so that two ends of a space enclosed between the two stop portions 11333 are open, and the guiding effect on the photovoltaic cell 2 is improved.

Specifically, the stopper 11333 is fastened to the lower clamping bracket 11330 by a screw, and to improve the installation efficiency, the conductive plate 11220 and the stopper 11333 may be fastened together by a screw, i.e., both sides of the conductive plate 11220 are respectively sandwiched between the stopper 11333 and the lower clamping bracket 11330, and then sequentially pass through the stopper 11333 and the conductive plate 11220 by a screw to be fastened to the lower clamping bracket 11330.

Since the conductive plate 11220 is to be replaced according to the specific type of the photovoltaic cell 2, in order to facilitate the disassembly and replacement thereof, the conductive plate 11220 in this embodiment is of a split structure, that is, includes a main conductive plate 11223 in the middle and two side conductive plates 11224 disposed in one-to-one correspondence with the stop portions 11333, the main conductive plate 11223 and the two side conductive plates 11224 are spaced apart by a certain distance to form the above-mentioned space-avoiding portion 11222, the side conductive plate 11224 is sandwiched between the stop portions 11333 and the lower clamping bracket 11330, the side conductive plate 11224 is equal to or close to the longitudinal dimension of the main conductive plate 11223 (i.e., the conveying direction of the photovoltaic cell 2), the lateral dimension of the side conductive plate 11224 is smaller, and the lateral dimension of the main conductive plate 11223 is larger, which is the main conductive portion of the conductive plate 11220, the protruding portion 11221 is mainly disposed on the main conductive plate 11223, and the main conductive plate 11223 is fastened on the lower clamping bracket 11330 by screws alone.

When the size of the photovoltaic cell 2 is smaller, the lower surface of the photovoltaic cell only contacts the protruding part 11221 on the main body conductive plate 11223 during power-on detection; when the size of the photovoltaic cell 2 is larger, only the corresponding main body conductive plate 11223 needs to be replaced, and when the power-on detection is performed, the lower surface of the photovoltaic cell 2 contacts with the protruding portions 11221 on the main body conductive plate 11223 and also contacts with the side conductive plates 11224 on two sides, and the side conductive plates 11224 can be matched with the corresponding grid lines 21 to perform a conductive function. The conductive plate 11220 of the separate structure is adopted, so that the replacement of the main conductive plate 11223 is facilitated, and the above-mentioned space avoiding portion 11222 is conveniently formed.

Further, in some embodiments of the present application, the first flaw detection device further includes a lateral centering mechanism 14000 located on the upstream side of the EL detection device 11000, as shown in fig. 3 and 4, to ensure centering accuracy of the photovoltaic cell 2 when being conveyed to the detection position. The lateral centering mechanism 14000 includes two lateral moving members 14100 located on both lateral sides of the photovoltaic cell 2, the lateral moving members 14100 being laterally movable to urge the photovoltaic cell 2 for lateral position adjustment.

Specifically, the lateral centering mechanism 14000 further includes a base 14200, and the two lateral moving members 14100 may be precision sliding tables, which have high position adjustment precision. The two lateral moving members 14100 are oppositely arranged at two sides of the top of the base 14200, and the conveyor line body of the first conveyor line 13000 passes through the space between the two lateral moving members 14100, and the two lateral moving members 14100 are adjusted in advance according to the type of the photovoltaic cell 2 to be measured so as to transversely center the photovoltaic cell 2 of the corresponding type.

The lateral movement member 14100 has a roller 14300 mounted thereon such that the photovoltaic cell 2 is in rolling engagement with the roller 14300 to reduce friction as the photovoltaic cell 2 passes the lateral centering mechanism 14000 in the conveying direction.

To enhance the integrity and integration of the entire first defect inspection station 10000, in some embodiments of the present application, it further includes a first support frame 15000, with the associated structural components and electrical components of the first defect inspection station 10000 disposed on the first support frame 15000.

The whole first support frame 15000 is built by adopting aluminum alloy sections, and can also adopt welding square tubes, so that the appearance is attractive.

Casters and braces are also added to the bottom four corners of the first support frame 15000 for ease of movement and positioning, respectively.

As shown in fig. 12 to 15, for the second defect detecting station 20000, the turning mechanism 22000 includes a turning wheel 22100 and a turning driving component 22200 for driving the turning wheel 22100 to turn, the turning wheel 22100 includes a rotating shaft 22110 and a wheel body 22120 coaxially and fixedly connected with the rotating shaft 22110, an even number of battery slots 22130 are radially arranged on the wheel body 22120, the battery slots 22130 are uniformly distributed along the circumferential direction of the wheel body 22120, and each battery slot 22130 extends along the radial direction of the wheel body 22120 and has an outward notch.

Specifically, when one of the battery piece slots 22130 rotates along with the turning mechanism 22000 to be in a horizontal state, the battery piece slot 22130 is flush with the front section conveying line body of the second conveying line 21000, and the photovoltaic battery piece 2 output by the second flaw a surface detection device 23000 on the second conveying line 21000 enters the battery piece slot 22130; as the turning mechanism 22000 continues to rotate, the photovoltaic cell 2 entering the cell slot 22130 rotates 180 ° to be flush with the rear-section conveying line body of the second conveying line 21000, and the photovoltaic cell 2 is output from the turning mechanism 22000 and then conveyed to the second flaw B-surface detection device 24000; at the same time, the other cell slot 22130 opposite to this cell slot 22130 is rotated to be flush with the front-stage conveying line body of the second conveying line 21000, and the other photovoltaic cell 2 enters this cell slot 22130 to be rotated. By providing an even number of battery slots 22130 and uniformly distributing them along the circumference of the wheel 22120, a plurality of photovoltaic cells 2 can be turned over by a turning mechanism 22000 to improve turning efficiency.

Further, in the even number of battery slots 22130, there are a plurality of battery slots 22130 with different depths, each of the battery slots 22130 with different depths has an even number and is uniformly distributed along the circumferential direction of the wheel body 22120, as shown in fig. 14 and 15, each of the round wheel discs 22121 is formed with 4 sub slots with different depths, which are respectively denoted as 22122a, 22122b, 22122c and 22122d, and further 4 battery slots 22130 with different depths are formed. Through setting up the upset of multiple different degree of depth battery piece slot 22130, can make it be applicable to the upset of different models of photovoltaic cell piece 2 respectively, to the photovoltaic cell piece 2 of a specific model, only need make its corresponding battery piece slot 22130 cooperate with second transfer chain 21000 and realize the upset of this model photovoltaic cell piece 2.

The second flaw detection station 20000 can detect flaws on the front and back surfaces of the photovoltaic cell 2 respectively by arranging the turnover mechanism 22000, the second flaw A surface detection device 23000 and the second flaw B surface detection device 24000, so that the photovoltaic cell 2 is more comprehensive in detection and wider in applicability.

For the wheel body 22120, it includes two circular wheel discs 22121 aligned with each other and having the same structure and size, the circular wheel discs 22121 are coaxially and fixedly connected with the rotating shaft 22110, each battery slot 22130 is composed of two sub slots 22122 respectively formed on the two circular wheel discs 22121, the sub slots 22122 on each circular wheel disc 22121 are uniformly distributed along the circumferential direction thereof, and each sub slot 22122 extends along the radial direction of the circular wheel disc 22121 and has an outward notch.

When the photovoltaic cell 2 is inserted into the cell slot 22130, the lateral two sides of the photovoltaic cell 2 are respectively inserted into the two sub-slots 22122 and are supported by the two sub-slots 22122. The wheel 22120 with the structure has low requirement on the overturning driving component 22200, thereby being beneficial to reducing the equipment cost. The overturning driving unit 22200 specifically selects a servo motor.

Further, the slot opening of the sub slot 22122 is a conical opening with a narrow inner side and a wide outer side, so that the photovoltaic cell 2 can enter the slot conveniently.

The turnover mechanism 22000 further comprises a photoelectric sensor, which is used for detecting whether the photovoltaic cell 2 is inserted into the cell slot 22130, so that the rotation of the turnover mechanism 22000 is controlled conveniently.

The tilting mechanism 22000 further includes a support base 22300, and the tilting wheel 22100 and the tilting drive member 22200 are mounted on the support base 22300, and the tilting mechanism 22000 is mounted on a second support frame 25000 described below through the support base 22300.

For the second conveyor line 21000, to facilitate engagement with the flipping mechanism 22000 to facilitate transport of the photovoltaic cells 2 before and after flipping, in some embodiments of the present application, the second conveyor line 21000 includes an a-side up product conveyor line 21100 for transporting a-side up products and a B-side up product conveyor line 21200, i.e., the a-side up product conveyor line 21100 for transporting the photovoltaic cells 2 before flipping and the B-side up product conveyor line 21200 for transporting the photovoltaic cells 2 after flipping. The a-side up product conveyor line 21100 is engaged with the first conveyor line 13000, the a-side up product conveyor line 21100 extends through the second flaw a-side detection apparatus 23000, the B-side up product conveyor line 21200 extends through the second flaw B-side detection apparatus 24000, and the flip-over mechanism 22000 is engaged between the a-side up product conveyor line 21100 and the B-side up product conveyor line 21200.

The second flaw a-face detecting apparatus 23000 and the second flaw B-face detecting apparatus 24000 are both AOI detecting apparatuses.

To enhance the integrity and integration of the entire second flaw detection station 20000, in some embodiments of the present application, it further includes a second support frame 25000, with associated structural components and electrical components of the second flaw detection station being disposed on the second support frame 25000.

The whole second support frame 25000 is built by adopting aluminum alloy sections, and can also adopt welding square tubes, so that the appearance is attractive.

Casters and braces are also added to the bottom four corners of the second support frame 25000 for ease of movement and positioning, respectively.

After the photovoltaic cell 2 is detected, a corresponding detection result is usually output, and then the photovoltaic cell is classified into a plurality of grades, such as grade a, grade b, grade c, grade d, NG and fragments, according to the specific detection result. The existing sorting operation is usually carried out manually, a display screen is placed at the blanking position of the detection station, the detection result is displayed on the display screen, and detection staff sorts products of different grades to different blanking areas by means of the displayed detection result, so that classification and collection of each grade are completed. The sorting operation mode needs manual participation, is large in workload and low in sorting efficiency, and is low in intellectualization due to the manual participation, so that the risk of wrong sorting exists.

To solve this problem in the prior art, in some embodiments of the present application, the photovoltaic sheet integrated inspection apparatus 1 further includes a sorting station 30000, referring to fig. 16 to 26, located at a downstream side of the flaw detection station, for sorting the inspected photovoltaic cells 2 according to a set sorting criterion.

Further, the sorting station 30000 includes a sorting conveyor line 32000, a plurality of jacking conveyors 33000 (one of which is labeled), and a plurality of blanking cartridges 35000 (one of which is labeled 35000).

The movement of the sorting conveyor line 32000 and the lifting conveying mechanism 33000 is controlled by an electronic control system, and the electronic control system can also obtain the detection result (for example, a grade product, b grade product, fragments and the like) of each photovoltaic cell piece 2 to be sorted.

The sorting station 30000 further comprises a sorting support frame 31000, a sorting platform 31100 is disposed in the sorting support frame 31000, and the sorting conveyor line 32000, the plurality of jacking conveying mechanisms 33000 and the plurality of blanking boxes 35000 are all mounted on the sorting platform 31100.

The whole sorting support frame 31000 is built by adopting aluminum alloy sections, and can be welded with square tubes, so that the appearance is attractive.

Casters and braces are respectively arranged at four corners of the bottom of the sorting support frame 31000 for convenient movement.

Integrally arranged sorting stations 30000 can facilitate flexible use of the sorting stations 30000 and ease of assembly with a detection station.

The sorting station 30000 according to the present application is used for sorting the photovoltaic cells 2 for which flaw detection has been completed, i.e., the detection results of the photovoltaic cells 2 received by the sorting conveyor line 32000 are known.

The sorting conveyor line 32000 may be disposed at an intermediate position of the sorting deck 31100, which conveys the photovoltaic cell 2 in the direction of the line.

In the present application, the sorting conveyor line 32000 is configured to convey the photovoltaic cells 2 by using a conveyor belt, and is mounted on the sorting deck 31100.

In order to change the flow direction of the photovoltaic cell 2 having different detection results conveyed on the sorting conveyor line 32000 to perform sorting of different grades, a plurality of lift-up conveying mechanisms 33000 are provided.

The plurality of jacking and conveying mechanisms 33000 are disposed below the sorting conveyor line 32000 at intervals along the conveying direction of the sorting conveyor line 32000, and the jacking and conveying mechanisms 33000 are mounted on the sorting platform 31100.

The jacking and conveying mechanism 33000 is used for jacking the photovoltaic cell 2 thereon and conveying the photovoltaic cell into the blanking box 35000 corresponding to the jacking and conveying mechanism 33000. In the initial state, the lifting conveyor 33000 does not lift, and the lifting surface thereof is lower than the conveying surface of the sorting conveyor line 32000.

Specifically, referring to fig. 17, in order to stably lift and avoid interference with the conveying line bodies of the sorting conveying line 32000 during lifting, the sorting conveying line 32000 is a precision conveyor having two conveying line bodies arranged at a lateral interval, and the lifting conveying mechanism 33000 is located between the two conveying line bodies of the sorting conveying line 32000.

One lower magazine 35000 may be provided at one side thereof or one lower magazine 35000 may be provided at both sides thereof, respectively, corresponding to each of the lifting-up conveying mechanisms 33000.

Referring to fig. 17, six jacking and conveying mechanisms 33000 are arranged at intervals, and one blanking box 35000 is respectively arranged at two sides of each jacking and conveying mechanism 33000, and twelve blanking boxes 35000 in total are exemplified.

Alternatively, other numbers of lifting and conveying mechanisms 33000 and discharging boxes 35000 may be provided, and if the discharging boxes 35000 are provided on both sides, the numbers of the discharging boxes 35000 on both sides may be unequal.

The several under-run bins 35000 of the plurality of under-run bins 35000 are used for collecting the photovoltaic cells 2 of different detection results, that is, each of the plurality of under-run bins 35000 may collect the photovoltaic cells 2 of different detection results, or each of one part of the plurality of under-run bins 35000 may collect the photovoltaic cells 2 of different detection results, and the remaining part of the under-run bins 35000 may collect the photovoltaic cells 2 of which detection results are at least partially the same as the detection results of the photovoltaic cells 2 collected in the part of under-run bins 35000 as described above.

Before sorting, the electronic control system knows in advance which of the discharging boxes 35000 collects the photovoltaic cells 2 of which detection result, and also knows in advance which of the lifting conveying mechanisms 33000 the discharging boxes 35000 of which detection result corresponds to, so that the electronic control system sorts the conveyed photovoltaic cells 2 into the corresponding discharging boxes 35000 through the lifting conveying mechanisms 33000 according to the detection result of the conveyed photovoltaic cells 2.

For reliable jacking, referring to fig. 19, the jacking transport mechanism 33000 further comprises a position sensor 33700 for sensing whether the photovoltaic cell 2 is present above the jacking transport mechanism 33000.

The following specifically describes a case of sorting a-stage photovoltaic cells.

The jacking and conveying mechanism 33000 can jack and convey the a-stage photovoltaic cell, and the following conditions are required to be met: the photovoltaic cell piece conveyed by the method (1) is a grade-a product; (2) The electronic control system knows which jacking and conveying mechanism 33000 (marked as jacking and conveying mechanism 33000 a) corresponds to the blanking box 35000 for collecting the a-level photovoltaic cell; (3) The position sensor 33700 of the lifting conveying mechanism 33000a detects that the photovoltaic cell 2 exists above the lifting conveying mechanism; (4) The jacking transmission mechanism a needs to be conveyed to which of the two sides.

After jacking, since the electronic control system knows in advance which side of the jacking and conveying mechanism 33000a the lower box 35000 can collect the photovoltaic cell of the a-stage (the lower box 35000a is recorded), the electronic control system can control the jacking and conveying mechanism 33000a to accurately convey the photovoltaic cell to the corresponding lower box 35000a.

In some embodiments of the present application, referring to fig. 19-21, the jacking transport mechanism 33000 includes a first mount 33100, a jacking drive unit 33300, a second mount 33200, a transmission drive unit 33400, and a jacking power transmission unit 33500.

The first mount 33100 may be mounted on the sorting platform 31100 as a base of the lifting and conveying mechanism 33000.

The jacking driving unit 33300 is mounted on the first mount 33100 for providing a jacking force, and in this application, the jacking driving unit 33300 selects a jacking cylinder to use.

The second mounting base 33200 is connected with a lifting rod of the lifting cylinder, and the transmission driving unit 33400 and the lifting power transmission unit 33500 are mounted on the second mounting base 33200.

When the jacking cylinder is lifted, the second mounting base 33200, the transmission driving unit 33400 and the jacking power transmission unit 33500 can be jacked together.

In this application, the transmission drive unit 33400 is selected to be a drive motor that provides a driving force.

The jacking power transmission unit 33500 is used to transmit the driving force provided by the above-described transmission driving unit 33400.

In the present application, the jacking power transmission unit 33500 includes a synchronizing shaft 33510, a first power transmission portion 33520 and a second power transmission portion 33530, and the synchronizing shaft 33510 is connected to a driving shaft of a driving motor and also connected to the first power transmission portion 33520 and the second power transmission portion 33530, respectively, for transmitting driving force to the first power transmission portion 33520 and the second power transmission portion 33530.

The first power transmission portion 33520 and the second power transmission portion 33530 are oppositely disposed on opposite sides of the second mount 33200, and are driven and transmitted by the synchronizing shaft 33510, respectively.

The structures of the first power transmission portion 33520 and the second power transmission portion 33530 are the same, and a structure in which the first power transmission portion 33520 is described below as an example.

The first power transmission portion 33520 includes a first drive pulley set 33521 and a first conveyor belt 33523.

The first drive pulley set 33521 includes a drive pulley, at least one idler pulley (labeled as one of the idler pulleys 33522), and at least one driven pulley, with a first conveyor belt 33523 wrapped around the first drive pulley set 33521.

The driving motor is installed on the second installation seat 33200, and the output shaft thereof is connected with the synchronizing shaft 33510, the synchronizing shaft 33510 is installed on the second installation seat 33200, and the driving wheel is arranged on the synchronizing shaft 33510 in a penetrating manner, so that power transmission is realized.

Therefore, when the driving motor rotates in one direction, the first transmission pulley group 33521 also rotates by the driving force, and the first conveyor 33523 is conveyed.

In the present application, the conveying direction of the first conveyor 33523 is different from the conveying direction of the sorting conveyor line 32000 described above, for example, the vertical direction shown in fig. 2 (see fig. 2), and thus the conveying direction of the photovoltaic cells 2 conveyed on the sorting conveyor line 32000 can be changed.

When the photovoltaic cell 2 is lifted up by the lifting conveying mechanism 33000, the driving motor drives the first conveying belt 33523 to convey towards one side when rotating in a clockwise direction, so that the photovoltaic cell 2 is conveyed to the blanking box 35000 on one side, and drives the first conveying belt 33523 to convey towards the other side when rotating in a counterclockwise direction, so that the photovoltaic cell 2 is conveyed to the blanking box 35000 on the other side, so that different photovoltaic cells 2 are collected by different blanking boxes 35000.

In some embodiments of the present application, the driving force of the driving motor may also be transmitted to the driving wheel in the first power transmission portion 33520 through the timing belt, and then, since the timing shaft 33510 connects the driving wheel in the first power transmission portion 33520 and the driving wheel in the second power transmission portion 33530, the driving force is also transmitted to the driving wheel in the second power transmission portion 33530 through the timing shaft 33510.

In some embodiments of the present application, referring to fig. 5, the second mount 33200 includes a base 33210 and opposing side panels (denoted as first side panel 33220 and second side panel 33230).

The driving motor is mounted on one of the side plates (e.g., the second side plate 33230), and the synchronizing shaft 33510 is mounted on the first side plate 33220 and the second side plate 33230 and is connected to the first power transmission portion 33520 and the second power transmission portion 33530, respectively.

The first power transmission portion 33520 is mounted to the first side plate 33220 and the second power transmission portion 33530 is mounted to the second side plate 33230.

Specifically, the first power transmission portion 33520 is mounted on the outer side of the first side plate 33220, and the second power transmission portion 33530 is mounted on the outer side of the second side plate 33230.

In order to achieve stable conveyance of the photovoltaic cell 2, referring to fig. 19, a jacking support plate 33600 is disposed on top of the opposite side plate, the jacking support plate 33600 being opposite to the base 33210 and located between the first conveyor 33523 of the first power transmission portion 33520 and the second conveyor of the second power transmission portion 33530.

Referring to fig. 19 and 20, the support surface of the jacking support plate 33600 is lower than the conveying surfaces of the first and second conveyors 33523, 20.

Referring to fig. 19, the position sensor 33700 is mounted on the base 33210 and can emit a signal directly above the lift-up support plate 33600 through the avoidance holes 33610 thereon for sensing the photovoltaic cell 2 positioned above the lift-up conveyor 33000.

In order to adjust the tensioning of the first conveyor 33523 by the tensioning wheel 33522 during conveyance, a tensioning device 33800 is provided.

The tensioning device 33800 may tension the tensioning wheel 33522 having an internal pressure function by internal pressure, or may tension the tensioning wheel 33522 having an external tension by external tension.

In some embodiments of the present application, one tensioning wheel 33522 for the outer strut and three driven wheels are provided in view of the spatial relationship, and referring to fig. 21, a tensioning device 33800 is provided for the tensioning wheel 33522 of the outer strut.

Specifically, the driving wheel is located at a middle position of the lower sides of the two driven wheels, the remaining driven wheel and the tensioning wheel 33522 are located at the upper sides of the two driven wheels, and the distance between the two driven wheels is smaller than the distance between the remaining driven wheel and the tensioning wheel 33522, so that the driving wheel, the three driven wheels and the tensioning wheel 33522 are arranged in a triangle-like structure, see fig. 19.

Referring to fig. 21, the tensioner 33800 includes a first mounting block 33810, a first stud 33820, and a second mounting block 33830.

The first mounting block 33810 is mounted on the second mounting base 33200 and has a screw hole (not shown) penetrating through the second mounting base in a direction perpendicular to the wheel axis of the tensioning wheel 33522; the first stud 33820 extends through the threaded bore and abuts the second mounting block 33830, and the second mounting block 33830 is slidably mounted on the second mounting block 33200.

The axle of tensioner 33522 is coupled to second mounting block 33830 and first stud 33820 abuts second mounting block 33830 and when first stud 33820 is rotated, a sliding force can be applied to second mounting block 33830 to outwardly tension tensioner 33522 to outwardly tension first conveyor belt 33523.

In some embodiments of the present application, referring to fig. 7, the tensioning device 33800 is disposed on a different side of the second mount 33200 than the tensioning wheel 33522, particularly on a different side of the first side plate 33220 of the second mount 33200.

The second mounting block 33830 is disposed on one side of the first mounting block 33810, the second mounting block 33830 is slidably mounted on the first side plate 33220, and the axle of the tensioning wheel 33522 passes through the avoiding chute 33221 on the first side plate 33220 to connect with the second mounting block 33830.

And at least one elongated hole 33831 is correspondingly formed in the second mounting block 33830, and a screw is inserted through the elongated hole 33831 to fix the second mounting block 33830 to the first side plate 33220.

When the external bracing tensioning is needed, the first stud 33820 is manually rotated, the screw slides along the elongated hole 33831 and the wheel shaft of the tensioning wheel 33522 slides along the avoiding chute 33221, so that the tensioning wheel 33522 is driven to slide outwards along the avoiding chute 33221, and the external bracing tensioning of the tensioning wheel 33522 is realized.

In some embodiments of the present application, the tensioning device 33800 and the tensioning wheel 33522 may be disposed on the same side of the second mount 33200, particularly on an inner side of a side plate (e.g., the first side plate 33220) of the second mount 33200, where the tensioning wheel 33522 is a wheel with internal pressure tensioning, if space permits.

A chute (not shown) is formed on the inner side surface of the first side plate 33220.

The first mounting block 33810 is mounted in the chute, the second mounting block 33830 is provided with at least one elongated hole 33831, a screw passes through the elongated hole 33831 to fix the second mounting block 33830 in the chute, and the axle of the tensioning wheel 33522 is fixedly mounted on the second mounting block 33830.

The first mounting block 33810 has a screw hole penetrating in a direction perpendicular to the wheel shaft of the tensioning wheel 33522; the first stud 33820 protrudes through the threaded bore and abuts the second mounting block 33830.

When internal pressure tensioning is required, the first stud 33820 is manually rotated to apply a sliding force inward to the second mounting block 33830 to cause the tensioning wheel 33522 to tension the first belt.

Therefore, when the photovoltaic cell of the a-stage is received and conveyed by the sorting conveying line 32000 and the position sensor 33700 in the lifting conveying mechanism 33000 corresponding to the a-stage blanking box 35000 detects that the photovoltaic cell exists above the photovoltaic cell, the electric control system controls the lifting conveying mechanism 33000 to lift up, and enables the conveying belt to rotate towards the a-stage blanking box 35000, so that the a-stage photovoltaic cell is driven to be conveyed into the a-stage blanking box 35000, and collection is completed.

To facilitate the collection of parts, the receiving surface of the lower magazine 35000 is disposed obliquely downward from the side close to the elevating conveyor 33000 to the side away from the elevating conveyor 33000, see fig. 17.

In order to ensure the conveying reliability, referring to fig. 17 and 18, a conveying branch 34000 is provided between the lifting conveying mechanism 33000 and the lower magazine 35000 for receiving the photovoltaic cell 2 conveyed by the lifting conveying mechanism 33000 and transferring into the corresponding lower magazine 35000.

Referring to fig. 18, the conveying surface of the conveying branch 34000 is also provided obliquely, and the oblique direction thereof coincides with the oblique direction of the receiving surface of the blanking box 35000.

The bottom end of the conveying branch 34000 in the conveying direction abuts against the blanking box 35000, so that the photovoltaic cell 2 is conveyed to the corresponding blanking box 35000 conveniently.

The conveying branches 34000 are in one-to-one correspondence with the blanking cartridges 35000.

Referring to fig. 22 and 23, the conveying branch 34000 includes a conveying rack 34100, a conveying driving unit 34200, and a sorting power transmitting unit 34300.

The carriage 34100 can be mounted on the sorting deck 31100; the transport driving unit 34200 is mounted on the transport frame 34100, and may be a motor for providing driving force.

The sorting power transmission unit 34300 transmits driving force for powering the conveyance of the photovoltaic cell 2.

In some embodiments of the present application, referring to fig. 23, the conveying branch 34000 also employs a belt conveyor, and the conveying surface inclination of the conveying branch 34000 is achieved by disposing the driving pulley and the driven pulley at different heights.

The inclination angle of the conveying branch 34000 is, for example, 30 °, so that the photovoltaic cell 2 can be smoothly conveyed into the blanking box 35000, and the photovoltaic cell 2 is prevented from being damaged due to the excessive angle.

In order to increase the carrying capacity of the photovoltaic cells 2 when the transport branch 34000 transports the photovoltaic cells 2, a carrying plate 34400 is arranged on top of the transport frame 34100, which carrying plate 34400 is located below the conveyor belt in contact with the photovoltaic cells 2, see fig. 8.

In one embodiment of the present application, the blanking box 35000 is set to be liftable, when the photovoltaic cell 2 is not collected, the blanking box 35000 rises to a high initial position, and as the photovoltaic cell 2 is collected, the blanking box 35000 is gradually lowered, so that the receiving surface of the blanking box 35000 is propped against the blanking end at the bottom end of the conveying branch 34000, and more space is reserved for collecting the photovoltaic cell 2.

The blanking box 35000 includes a box body mount 35100, a lifting mechanism 35200, a support tray 35300, and a part detection sensor 35400.

The box mount 35100 may be mounted to the sorting deck 31100, specifically, the sorting deck 31100 is a platen, and a through hole (not labeled) is formed in the platen, and the box mount 35100 extends out of the through hole and is mounted at the through hole.

In some embodiments of the present application, referring to fig. 24-26, the box mounting seat 35100 includes an upper mounting seat 35110 and a lower mounting seat 35120, the upper mounting seat 35110 is a cover body penetrating up and down, an inward flange 35111 is formed at the edge of the bottom opening of the cover body, the lower mounting seat 35120 is a U-shaped seat, and outward flanges 35121 are formed at opposite side edges of the U-shaped seat.

The U-shaped seat passes through and extends out of the through hole, so that an outward flange 35121 is arranged at the edge of the through hole, and the cover body is arranged on the upper surface of the detection table near the edge of the through hole through an inward flange 35111.

The lifting mechanism 35200 is installed in the U-shaped seat and extends into the cover body, and specifically, the lifting mechanism 35200 adopts an electric push rod.

The top of the electric putter is mounted on the support plate 35300, so that the support plate 35300 can be lifted up when the electric putter is pushed out and the support plate 35300 can be lowered when the electric putter is retracted.

The holding tray 35300 is used for collecting the photovoltaic cells 2 and has an inclined receiving surface whose inclination coincides with the inclination of the conveying branch 34000, for example by 30 degrees, to avoid damage to the parts and also to make it possible to code the parts.

In some embodiments of the present application, referring to fig. 12, the support tray 35300 has a lateral support plate 35310 and a vertical baffle 35320, the bottom surface of the lateral support plate 35310 being horizontal and the top surface being an inclined plane.

The part detection sensor 35400 is installed on the U-shaped seat through a mounting bracket and is used for detecting whether the photovoltaic cell 2 exists in the supporting tray 35300, and when the photovoltaic cell 2 does not exist, the lifting mechanism 35200 is controlled to lift to an initial position so as to receive the part.

Specifically, the backup plate 35300 is provided with a relief portion 35311, and the part detection sensor 35400 can emit a signal through the relief portion 35311 to shield the relief portion 35311 and trigger the part detection sensor 35400 when a part is present in the backup plate 35300.

In order to facilitate the removal of parts after the blanking box 35000 is full, the blanking box further comprises a box body 35500, and the box body 35500 is arranged on the supporting tray 35300.

Referring to fig. 24, the cartridge body 35500 includes a cartridge base 35510 and a plurality of cartridge side plates 35520 (one of which is labeled 35520), wherein the cartridge base 35510 is disposed above the lateral support plate 35310, one of the cartridge side plates 35520 is disposed against the vertical baffle 35320, and one of the cartridge side plates 35520 (not labeled) is mounted laterally of the lateral support plate 35310 for blocking the collected photovoltaic cells 2.

In some embodiments of the present application, the electronic control system records the number of the collected photovoltaic cells 2 in each of the discharging boxes 35000, so, when for example, five photovoltaic cells 2 are added in each of the discharging boxes 35000, the lifting mechanism 35200 is controlled to descend by a certain distance, so that the receiving surface of the discharging box 35000 is always located at the lower edge of the bottom end of the conveying branch 34000 along the conveying direction, and the photovoltaic cells 2 are conveniently received.

For example, when the number of parts in the blanking box 35000 reaches the full box number, the detecting personnel is reminded to take the box body 35500, after the box body 35500 is taken, the part detecting sensor 35400 cannot sense the photovoltaic cell 2, and at this time, the lifting mechanism 35200 is controlled to lift the supporting plate 35300 to the initial position, and wait for the next cycle.

In some embodiments of the present application, a sensor (not shown) may also be provided for detecting a full cartridge, reminding the user to take off the cartridge body 35500 when the number of parts in the lower cartridge 35000 reaches the full cartridge number.

To ensure stable lifting of the lifting mechanism 35200, in some embodiments of the present application, see fig. 25 and 26, a guide mechanism 35600 is also provided, the guide mechanism 35600 comprising a guide rod 35610 and a guide cylinder 35620.

A mounting flange is formed at an edge of one end of the guide cylinder 35620, and the guide cylinder 35620 is mounted on the U-shaped seat by the mounting flange.

One end of the guide rod 35610 is connected with the bottom of the tray 35300, and the other end of the guide rod 35610 penetrates through the guide cylinder 35620 to extend to the outside, and when the lifting mechanism 35200 lifts the tray 35300, the guide rod 35610 guides the inside of the cylinder 35620 and simultaneously guides freely up and down.

The utility model provides a select separately station 30000 can be with select separately transfer chain 32000, jacking transport mechanism 33000, transport branch 34000 and unloading box 35000, select separately braced frame 31000 whole can become a select separately the workstation, can directly cluster into the automation line body, realizes online part and selects separately, reduces artifical task volume, and improves separation efficiency.

In order to realize automatic feeding and discharging of the photovoltaic sheet integrated detection device 1, referring to fig. 1 and 9, the photovoltaic sheet integrated detection device further comprises a duplex position feeding and discharging line 40000, the duplex position feeding and discharging line 40000 is located on the upstream side of the flaw detection station, the duplex position feeding and discharging line 40000 comprises a first feeding line 41000, a second feeding line 42000 and a duplex position taking and discharging mechanism 43000, and the duplex position taking and discharging mechanism 43000 alternately feeds photovoltaic sheets 2 on the first feeding line 41000 and the second feeding line 42000 onto a first conveying line 13000 or a second conveying line 21000 respectively.

If the first defect detection station 10000 is located at the upstream side of the second defect detection station 20000, the first conveying line 13000 is located at the upstream side of the second conveying line 21000, and the double-station material taking and placing mechanism 43000 alternately loads the photovoltaic cell pieces 2 on the first feeding line 41000 and the second feeding line 42000 onto the first conveying line 13000 respectively; if the second defect detecting station 20000 is located on the upstream side of the first defect detecting station 10000, the second conveying line 21000 is located on the upstream side of the first conveying line 13000, and the double-station taking and placing mechanism 43000 alternately loads the photovoltaic cells 2 on the first feeding line 41000 and the second feeding line 42000 onto the second conveying line 21000, respectively. Here, the description is made taking an example in which the first defect detecting station 10000 is located at the upstream side of the second defect detecting station 20000, and the double-station pick-and-place mechanism 43000 alternately loads the photovoltaic cells 2 on the first feeding line 41000 and the second feeding line 42000 onto the first conveying line 13000, respectively.

Specifically, as shown in fig. 9, the conveying direction of the first feeding line 41000 and the second feeding line 42000 is parallel to the conveying direction of the first conveying line 13000, and is disposed at upstream both sides of the first conveying line 13000 at a lateral interval; the duplex position is got and is put mechanism 43000 and is located between first material loading line 41000 and the second material loading line 42000, and it is specifically duplex position sucking disc mechanism, including lateral shifting module 43100 and vertical shifting module 43200, lateral shifting module 43100 is established on the moving part of vertical shifting module 43200, and two get material sucking discs 43300 are established respectively on the moving part both ends of lateral shifting module 43100, then two get material sucking discs 43300 can realize lateral and longitudinal movement at lateral shifting module 43100 and vertical shifting module 43200. In the initial state, no photovoltaic cell 2 exists on the two material taking suction cups 43300, when the two material taking suction cups 43300 transversely move to the position where one material taking suction cup 43300 is positioned above the first feeding line 41000 and the other material taking suction cup 43300 is positioned above the feeding end of the first conveying line 13000, one material taking suction cup 43300 moves downwards, one material taking suction cup sucks the photovoltaic cell 2 on the first conveying line 13000, and the other material taking suction cup 43300 still has no photovoltaic cell 2; then, the two taking suction cups 43300 are moved up for reset, and then are moved transversely until the taking suction cup 43300 with the absorbed photovoltaic cell 2 is positioned above the first conveying line 13000, the other taking suction cup 43300 without the photovoltaic cell 2 is positioned above the second feeding line 42000, the two taking suction cups 43300 are moved down, the taking suction cup 43300 with the absorbed photovoltaic cell 2 places the photovoltaic cell 2 on the first conveying line 13000, and meanwhile, the taking suction cup 43300 without the photovoltaic cell 2 absorbs the photovoltaic cell 2 on the second feeding line 42000; so reciprocating, two get material sucking disc 43300 and get one and put, with the photovoltaic cell piece 2 on first material loading line 41000 and the second material loading line 42000 material loading to first transfer chain 13000 alternately, improved material loading efficiency greatly, and then improved detection efficiency.

The first feeding line 41000 and the second feeding line 42000 may be specifically selected from belt conveyor lines, referring to fig. 9 to 11, the first feeding line 41000 and the second feeding line 42000 are provided with a tray 44000 and a cell lifting mechanism 45000, the tray 44000 comprises a tray frame 44100 and a cell support plate 44200, the tray frame 44100 comprises a frame bottom plate 44110, the cell support plate 44200 is horizontally disposed on a top surface of the frame bottom plate 44110, and a plurality of photovoltaic cells 2 are disposed on the cell support plate 44200 in a vertically stacked manner; the battery piece lifting mechanism 45000 is arranged below the material tray 44000 at the material taking position of the duplex position material taking and placing mechanism 43000, and is used for driving the battery piece supporting plate 44200 to do lifting motion so that the uppermost layer of photovoltaic battery pieces 2 are always at the same material taking height.

Further, the tray frame 44100 further includes a plurality of frame side posts 44120 circumferentially disposed on the frame bottom plate 44110 and enclosing a square storage space with the frame bottom plate 44110, wherein the circumferential sides of the battery plate support plates 44200 are in positioning engagement with the frame side posts 44120, and the positions of the frame side posts 44120 are adjustable to change the lateral and longitudinal dimensions of the storage space.

Specifically, the plurality of frame side uprights 44120 are arranged along the rectangular circumferential direction, the frame bottom plate 44110 is provided with the elongated mounting holes 44111, the frame side uprights 44120 are fastened in the elongated mounting holes 44111 through screws, and the fixing positions of the frame side uprights 44120 are adjusted along the extending direction of the elongated mounting holes 44111, so that the size of the storage space can be adjusted, and the photovoltaic cell module is suitable for photovoltaic cell pieces 2 of different types, and compatibility of the material tray 44000 is improved. The positioning groove 44210 is formed on the circumferential side surface of the battery piece supporting plate 44200, the positioning groove 44210 is propped against the frame side upright post 44120 to enable the frame side upright post 44120 to play a role in positioning the battery piece supporting plate 44200, and the frame side upright post 44120 can play a role in guiding the battery piece supporting plate 44200 when the battery piece supporting plate 44200 is lifted, so that lifting stability of the battery piece supporting plate 44200 is improved, and the precision of a material taking position is ensured.

The first and second feed lines 41000, 42000 are also provided with air blowing devices 46000 located on lateral sides of the tray 44000 in the take-out position. When the double-station material taking and discharging mechanism 43000 takes materials, the air blowing device 46000 blows air to the photovoltaic cells 2 on the material tray 44000, so that the adjacent photovoltaic cells 2 are prevented from being adhered to each other, and a plurality of adhered photovoltaic cells 2 are prevented from being taken at one time. The blowing device 46000 may be specifically implemented in the prior art, and the structure thereof will not be described in detail.

Further, the first and second feed lines 41000, 42000 further include a tray lift mechanism 47000 and a tray stop mechanism 48000, both of which are at the take-out position of the dual-station take-and-place mechanism 43000. The tray stop mechanism 48000 stops the tray 44000 reaching the material taking position so that the tray is no longer conveyed along with the belt, and then the tray lifting mechanism 47000 lifts the tray 44000 to separate the whole tray 44000 from the first and second feeding lines 41000 and 42000 so as not to obstruct normal conveyance of the first and second feeding lines 41000 and 42000. After the tray lifting mechanism 47000 lifts the tray 44000 in place, the battery slice lifting mechanism 45000 and the double-station material taking and placing mechanism 43000 are matched for material taking.

The battery slice jacking mechanism 45000 can be a linear module, the tray stop mechanism 48000 adopts a cylinder which is vertically arranged upwards, and the tray jacking mechanism 47000 also adopts a cylinder jacking mechanism.

In order to further improve the integration degree of the photovoltaic sheet integrated detection device 1, the duplex position feeding and discharging line 40000 is also arranged on the first supporting frame 15000, namely, integrated with the first flaw detection station 10000 into a whole, so that the whole is convenient to move, and the first flaw detection station 10000 serves as an initial station. If the second flaw detection station 20000 is used as the initial station, the duplex-station up-down line 40000 may be provided on the second support frame 25000, i.e., integrated with the second flaw detection station 20000.

In some embodiments of the present application, taking the first defect detection station 10000 as an initial station as an example, the first support frame 15000, the second support frame 25000 and the sorting support frame 31000 are sequentially arranged and connected into a whole along the direction of the assembly line, that is, the conveying direction of the photovoltaic cell 2, so that the duplex-station feeding and discharging line 40000, the first defect detection station 10000, the second defect detection station 20000 and the sorting station 30000 form a photovoltaic cell integrated detection device integrating duplex-station automatic feeding and discharging, first defect detection, second defect detection and sorting functions, as shown in fig. 1.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (10)

1. The utility model provides an integrated detection device of photovoltaic sheet, includes electrical system and flaw detection station, its characterized in that, the flaw detection station includes:

the first flaw detection station comprises first flaw detection equipment and a first conveying line, wherein the first flaw detection equipment is used for carrying out first flaw detection on the photovoltaic cell; the first conveying line is used for inputting and outputting the photovoltaic cell into and out of the first flaw detection device;

the second flaw detection station comprises a second conveying line, a turnover mechanism, second flaw A surface detection equipment for detecting flaws on the A surface of the photovoltaic cell and second flaw B surface detection equipment for detecting flaws on the B surface of the photovoltaic cell, wherein the A surface is one of the front surface and the back surface of the photovoltaic cell, and the B surface is the other surface; the second conveying line is connected with the first conveying line and sequentially passes through the second flaw A face detection device, the turnover mechanism and the second flaw B face detection device, and the turnover mechanism is used for turning the photovoltaic cell conveyed by the second conveying line from the A face to the B face upwards in the conveying process.

2. The integrated photovoltaic sheet inspection apparatus of claim 1 wherein,

the first flaw detection device includes an EL detection device and/or a PL detection device;

the EL detection device comprises an EL detection camera and an electrifying module, wherein the EL detection camera is positioned above the electrifying module, the electrifying module comprises a probe assembly and a conductive component, the probe assembly and the conductive component are respectively positioned above and below a conveyor line body of the first conveyor line and are used for respectively contacting a plurality of grid lines on an A face and a plurality of grid lines on a B face of a photovoltaic cell, the probe assembly comprises a plurality of first probe rows which are arranged along the arrangement direction of the grid lines on the A face or the B face, and the first probe rows and the conductive component are respectively externally connected with a power supply to electrify the photovoltaic cell;

the PL detection device includes a PL detection camera located above the conveyor line body of the first conveyor line.

3. The integrated photovoltaic sheet inspection apparatus of claim 2 wherein,

the EL detection device further comprises a clamping assembly for driving the probe assembly and the conductive component to move relatively or oppositely to contact and clamp or separate from the photovoltaic cell.

4. The integrated photovoltaic sheet detection apparatus according to claim 3, characterized in that,

the clamping assembly comprises a clamping driving mechanism, an upper clamping support and a lower clamping support which are arranged vertically oppositely, the probe assembly is arranged on the upper clamping support, the conductive part is arranged on the lower clamping support, and the clamping driving mechanism drives the upper clamping support and the lower clamping support to move vertically and synchronously oppositely or reversely.

5. The integrated photovoltaic sheet inspection apparatus of claim 4 wherein,

the first flaw detection device further comprises a guide assembly which is matched with the upper clamping support and the lower clamping support in a sliding guide mode respectively so as to guide the vertical movement of the upper clamping support and the lower clamping support.

6. The integrated photovoltaic sheet inspection apparatus of claim 2 wherein,

the distance between two adjacent first probe rows is adjustable.

7. The integrated photovoltaic sheet inspection apparatus of claim 1 wherein,

the turnover mechanism comprises a turnover wheel and a turnover driving component for driving the turnover wheel to turn over, the turnover wheel comprises a rotating shaft and a wheel body coaxially and fixedly connected with the rotating shaft, an even number of battery piece slots are radially arranged on the wheel body, the battery piece slots are uniformly distributed along the circumferential direction of the wheel body, and each battery piece slot extends along the radial direction of the wheel body and is outward in notch.

8. The integrated photovoltaic sheet inspection apparatus of claim 7 wherein,

among the even number battery piece slot, including the battery piece slot of multiple degree of depth difference, its quantity of battery piece slot of each degree of depth is even and follows the circumference of wheel body evenly distributes.

9. The integrated photovoltaic sheet inspection apparatus of claim 7 wherein,

the wheel body comprises two round wheel discs which are aligned with each other and have the same structure and size, the round wheel discs are fixedly connected with the rotating shaft in a coaxial way, each battery piece slot consists of two sub slots respectively formed on the two round wheel discs, the sub slots on each round wheel disc are uniformly distributed along the circumferential direction of the sub slots, and each sub slot extends along the radial direction of the round wheel disc and is outward in the notch.

10. The integrated photovoltaic sheet inspection apparatus of claim 1 wherein,

the second flaw A surface detection device and the second flaw B surface detection device are both AOI detection devices.