Solar cell IV detection device

Abstract

The invention discloses a solar cell IV detection device. The solar cell IV detection device comprises a frame cover, a conveying belt body and a detection mechanism. The two sides of the frame cover are provided with inlets and outlets, and a conveying belt body is arranged in the frame cover to achieve automatic conveying of solar cells. The detection mechanism comprises a worm and worm wheel driven by a first motor, a pressing structure and an illumination detection structure, and the pressing structure drives the illumination detection structure to vertically move through a sector gear connecting rod mechanism so as to form a closed detection space. An illumination unit, a pressure measurement assembly and two groups of pressing assemblies are arranged in the illumination detection structure, and the pressure measurement assembly drives a multi-connecting-rod posture adjusting probe through a motor and a screw and nut mechanism to ensure reliable contact with a solar cell electrode; the position pressing assembly adopts a differential gear rack mechanism to drive a pressing frame with a buffer spring, and self-adaptive pressing is achieved. According to the invention, high-efficiency automatic detection and good sealing performance are realized, the test precision is ensured, and the solar cell is effectively prevented from being damaged.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of detection equipment, in particular to a solar cell IV detection device. BACKGROUND

[0002] After production, the electrical performance of a solar cell needs to be detected, and IV characteristic testing of the solar cell is a key quality inspection link in the production process, and the accuracy directly affects the judgment of the product performance. At present, automatic IV detection technology has been widely used to improve the detection efficiency and reduce the labor intensity.

[0003] At present, Chinese patent application No. CN201621028262.X discloses a solar cell IV detection system, which comprises an illuminating lamp, a workbench and a detection terminal. The illuminating lamp is arranged above the workbench, and the detection terminal comprises a control unit. A detection seat is arranged on the workbench, and a suction mechanism for picking up solar cell pieces is arranged on the detection seat. A detection pressing plate is arranged above the detection seat, and the two ends of the detection pressing plate are installed on the workbench through a lifting mechanism. A detection foot is arranged on the lower edge of the detection pressing plate, and the detection foot is connected with the control unit.

[0004] However, the prior art adopts a suction method to carry the solar cell pieces, and there is a risk of hidden cracks of thin and brittle solar cell pieces caused by stress concentration in the picking and placing process. Secondly, the detection pressing plate is usually rigidly pressed downward, and if the solar cell pieces are warped or the placement pose has a slight deviation, the detection foot is prone to poor contact with the solar cell piece electrode or uneven stress, thereby affecting the stability and reliability of the test data. In addition, the whole detection process is carried out in an open or semi-open space, and it is not easy to isolate the interference of external environmental light, and errors are easily introduced into the IV test results which need to simulate standard light conditions. SUMMARY

[0005] The application aims to provide a solar cell IV detection device to solve the problems in the background art.

[0006] In order to achieve the above object, the present application adopts the following technical scheme: a solar cell IV detection device, comprising a frame cover, an inlet, an outlet, a conveying belt body and a detection mechanism, the frame cover is provided with an inlet and an outlet on the left and right sides respectively, and a conveying belt body for conveying solar cells is installed on the middle lower side of the frame cover, a detection mechanism for detecting the IV of the solar cells is connected to the middle upper side of the frame cover, the detection mechanism comprises a support fastened to the rear side of the frame cover, a top cover fixedly connected to the top of the support, a first motor fastened to the top side of the inside of the top cover, a worm connected to the output shaft at the bottom of the first motor, a worm gear meshed and driven on the right side of the worm, a pressing structure connected to the middle side at the rear of the worm gear, an illumination detection structure fixed to the bottom end of the pressing structure, and two guide rods fixed to the top left and right sides of the illumination detection structure respectively, the worm penetrates and rotates at the middle side of the bottom of the top cover, and the bottom end of the worm is rotationally connected to the support, the middle part of the worm gear penetrates and rotates on the right side of the inside of the support, the upper part of the pressing structure is rotationally arranged on the inside of the support, and the bottoms of the left and right sides of the support are provided with tabs, and the two guide rods penetrate and slide in the two tabs respectively.

[0007] Preferably, when the illumination detection structure is located at the bottom side, the bottom thereof is in contact with the conveying belt body, so as to prevent external light sources from contacting the solar cells.

[0008] Preferably, the pressing structure comprises a first sector gear short rod coaxially rotating with the worm gear, a second sector gear short rod meshed and driven on the left side of the first sector gear short rod, a first sector gear long rod rotationally connected to the rear side of the right end of the first sector gear short rod, a second sector gear long rod rotationally connected to the rear side of the left end of the second sector gear short rod, and a displacement seat rotationally connected to the bottoms of the first sector gear long rod and the second sector gear long rod, the rear sides of the bottoms of the first sector gear short rod and the second sector gear short rod are rotationally connected to the support, the bottoms of the first sector gear long rod and the second sector gear long rod are meshed, and the bottom of the displacement seat is fixed to the illumination detection structure.

[0009] Preferably, the included angle formed by the second sector gear short rod and the second sector gear long rod is the same as the included angle formed by the first sector gear short rod and the first sector gear long rod.

[0010] Preferably, the illumination detection structure comprises a cover seat fixed to the pressing structure, an illumination unit is locked and fixed on the middle upper side of the inside of the cover seat, a pressure measurement assembly is arranged on the middle lower side of the inside of the cover seat, first and second pressure position assemblies of the same structure and size are arranged on the left and right sides of the pressure measurement assembly respectively, the first and second pressure position assemblies are fastened to the left and right sides of the inside of the cover seat respectively, and the first and second pressure position assemblies are located at the same horizontal height.

[0011] Preferably, the pressure measuring assembly comprises a stand fixed to the cover base on the upper and lower sides, the outer surface of the stand is wrapped with a support plate, the inner side of the support plate close to the stand is embedded with an internally threaded block, the internally threaded block is threadedly connected with a screw rod, the top end of the screw rod is connected with the bottom output shaft of a second motor, the outer surface of the second motor is provided with a protective cover, and the rear side of the protective cover is fixed to the cover base, the top side of the screw rod penetrates and rotates at the bottom of the protective cover, and the inner middle side of the support plate is provided with a probe component.

[0012] Preferably, the stand, the internally threaded block, the screw rod, the second motor and the protective cover are provided with two groups, and the two groups are symmetrically arranged in the middle of the support plate.

[0013] Preferably, the probe component comprises a rectangular cover fixed to the top middle side of the support plate, the left and right sides of the inner side of the rectangular cover are respectively fixed with a third motor and a fourth motor, the bottom output shaft of the third motor is connected with a first swing rod, and the other end of the first swing rod is rotatably connected with a first support rod, the bottom output shaft of the fourth motor is connected with a second swing rod, and the other end of the second swing rod is rotatably connected with a second support rod, the end of the second support rod away from the second swing rod is rotatably connected above the first support rod, and a stand is provided through the connection between the second support rod and the first support rod, and the bottom side of the stand is locked and fixed with a probe.

[0014] Preferably, the first pressure position assembly comprises a carrier fixed to the cover base on the front and rear sides, the top side of the inner side of the carrier is locked and fixed with an electric push rod, the bottom output shaft of the electric push rod is rotatably connected with a gear piece, the front and rear sides of the gear piece are respectively meshed with a first rack and a second rack, the first rack and the second rack are respectively longitudinally slidably arranged on the inner front and rear sides of the carrier, the bottom of the first rack is fixedly connected with a first pressing frame, the bottom of the second rack is fixedly connected with a second pressing frame, and the first pressing frame and the second pressing frame are the same in structure and size.

[0015] Preferably, the bottom inner side of the second pressing frame is provided with a columnar groove, the top side of the inner side of the columnar groove is connected with a spring, the bottom end of the spring is connected with a protruding rod, and the protruding rod penetrates and slides in the bottom inner side of the columnar groove.

[0016] Compared with the prior art, the present application has the following advantages:

[0017] The present application realizes automatic conveying and positioning of the battery piece through the conveying belt body, realizes continuous automatic operation in combination with the integrated design of the detection mechanism, significantly improves the detection efficiency, at the same time, the frame cover and the down-pressing illumination detection structure form a closed space during detection, effectively isolates external light interference, provides a stable optical environment for IV test, and guarantees the accuracy of test results.

[0018] The application realizes the stable and accurate vertical movement of the lighting detection structure through the down-pressing structure composed of a worm gear and a sector gear linkage mechanism, and then realizes the fine adjustment of the probe in the height and horizontal directions through the screw rod and the inner threaded block mechanism driven by the second motor and the precise probe multi-linkage mechanism, so that the probe can accurately and reliably contact the battery electrode, and the quality of the electric signal collection is ensured.

[0019] The first pressure position assembly and the second pressure position assembly with differential gear drive characteristics are adopted, so that the first pressure frame and the second pressure frame can press the solar cell piece at different height points in sequence, and the convex rod with spring buffering is combined, so that the uneven surface of the battery piece can be adapted, stable pressing and clamping can be realized, movement in the testing process can be prevented, buffering protection can be provided, and the problems of hidden cracks or damage of the solar cell piece caused by excessive pressing force can be effectively avoided. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the application;

[0021] Figure 2 It is a structural schematic diagram of the detection mechanism of the application;

[0022] Figure 3 It is a structural schematic diagram of the down-pressing structure of the application;

[0023] Figure 4 It is a structural schematic diagram of the lighting detection structure of the application;

[0024] Figure 5 It is a structural schematic diagram of the pressure measurement assembly of the application;

[0025] Figure 6 It is a structural schematic diagram of the first pressure position assembly of the application.

[0026] In the figure: frame cover-1, inlet-2, outlet-3, conveying belt body-4, detection mechanism-5, support-51, top cover-52, first motor-53, worm-54, worm gear-55, pressing structure-56, lighting detection structure-57, guide rod-58, tab-511, first sector gear short rod-561, second sector gear short rod-562, first sector gear long rod-563, second sector gear long rod-564, displacement seat-565, cover seat-571, lighting unit-572, pressure measurement assembly-573, first pressure position assembly-574, second pressure position assembly-575, stand column-5731, support plate-5732, internally threaded block-5733, screw rod-5734, second motor-5735, protective cover-5736, probe component-5737, rectangular cover-57371, third motor-57372, fourth motor-57373, first swing rod-57374, first support rod-57375, second swing rod-57376, second support rod-57377, vertical rod-57378, probe-57379, carrier seat-5741, electric push rod-5742, gear piece-5743, first rack-5744, second rack-5745, first pressing frame-5746, second pressing frame-5747, spring-57471, protruding rod-57472. DETAILED DESCRIPTION

[0027] In order to further explain the technical solutions of the present application, specific embodiments are described in detail below.

[0028] Please refer to Figure 1 The present application provides a solar cell IV detection device, which comprises a frame cover 1, an inlet 2, an outlet 3, a conveying belt body 4 and a detection mechanism 5. The frame cover 1 is provided with an inlet 2 and an outlet 3 on the left and right sides respectively. The frame cover 1 is internally provided with a conveying belt body 4 for conveying solar cells, which realizes automatic conveying of solar cells and improves detection efficiency. The frame cover 1 is internally provided with a detection mechanism 5 for IV detection of solar cells, which integrates detection functions, realizes automatic operation, and forms a closed detection environment during detection to avoid external light interference.

[0029] Please refer to Figure 1 and Figure 2The solar cell IV detection device provided by the application has the advantages that the detection mechanism 5 comprises a support 51 fastened to the back side of the frame cover 1, a top cover 52 fixedly connected to the top of the support 51, a first motor 53 fastened to the inner top side of the top cover 52, a worm 54 connected to the bottom output shaft of the first motor 53, a worm wheel 55 engaged and driven on the right side of the worm 54, a pressing structure 56 connected to the middle side of the back of the worm wheel 55, an illumination detection structure 57 fixed to the bottom end of the pressing structure 56, and two guide rods 58 fixed to the left and right sides of the top of the illumination detection structure 57 respectively, the first motor 53 is used as a power source, the pressing structure 56 drives the illumination detection structure 57 to realize the lifting movement through the cooperation of the worm 54 and the worm wheel 55, the worm 54 penetrates and rotates in the middle side of the bottom of the top cover 52, and the bottom end of the worm 54 is rotationally connected to the support 51, so that the transmission stability is enhanced.

[0030] The middle part of the worm wheel 55 penetrates and rotates in the right side of the inner side of the support 51, the upper part of the pressing structure 56 is rotationally arranged in the inner side of the support 51, so that reliable rotation support is provided, the bottom of the left and right sides of the support 51 is provided with a tab 511, and the two guide rods 58 penetrate and slide in the inner sides of the two tabs 511 respectively, so that the illumination detection structure 57 can only move up and down, the positioning accuracy is improved, when the illumination detection structure 57 is located at the bottom side, the bottom thereof is in contact with the main body 4 of the conveying belt, so that the external light source is prevented from contacting the solar cell, and the external light is prevented from interfering with the IV test result.

[0031] Please refer to Figure 2 and Figure 3 The solar cell IV detection device provided by the application has the advantages that the detection mechanism 5 comprises a support 51 fastened to the back side of the frame cover 1, a top cover 52 fixedly connected to the top of the support 51, a first motor 53 fastened to the inner top side of the top cover 52, a worm 54 connected to the bottom output shaft of the first motor 53, a worm wheel 55 engaged and driven on the right side of the worm 54, a pressing structure 56 connected to the middle side of the back of the worm wheel 55, an illumination detection structure 57 fixed to the bottom end of the pressing structure 56, and two guide rods 58 fixed to the left and right sides of the top of the illumination detection structure 57 respectively, the first motor 53 is used as a power source, the pressing structure 56 drives the illumination detection structure 57 to realize the lifting movement through the cooperation of the worm 54 and the worm wheel 55, the worm 54 penetrates and rotates in the middle side of the bottom of the top cover 52, and the bottom end of the worm 54 is rotationally connected to the support 51, so that the transmission stability is enhanced.

[0032] The included angle formed by the second short fan gear 562 and the second long fan gear 564 is the same as the included angle formed by the first short fan gear 561 and the first long fan gear 563, so that the forces on both sides are balanced, the movement is stable, and the jamming is avoided.

[0033] Please refer to Figure 2 、 Figure 4 、 Figure 5 and Figure 6 The present application provides a kind of solar cell IV detection device, and illumination detection structure 57 includes the cover seat 571 of top middle side and lower pressing structure 56 fixed, illumination unit 572 is locked and fixed in the inside middle upper side of cover seat 571, to provide light source, simulate test condition, pressure measurement component 573 is arranged in the inside middle lower side of cover seat 571, realizes electric performance contact detection, first pressure position component 574 and second pressure position component 575 of structure, size same are respectively arranged in the left and right sides of pressure measurement component 573, first pressure position component 574 and second pressure position component 575 are respectively fastened to the left and right sides of the inside of cover seat 571, and first pressure position component 574 and second pressure position component 575 are located at the same horizontal height, can be positioned to solar cell on both sides and be pressed tightly, guarantee the contact effect of pressure measurement component 573 and solar cell.

[0034] Wherein, pressure measurement component 573 includes the column 5731 of upper and lower sides and cover seat 571 fixed, column 5731 outer surface is wrapped with support plate 5732, column 5731 provides vertical guide for support plate 5732, the side close to column 5731 in the inside of support plate 5732 is embedded with internal thread block 5733, internal thread block 5733 is screw connected with screw 5734, the top end of screw 5734 is connected with the bottom output shaft of second motor 5735, the outer surface of second motor 5735 is provided with shroud 5736, and the rear side of shroud 5736 is fixed with cover seat 571, the top side of screw 5734 is rotated in the bottom of shroud 5736, accurate rotating power is provided by second motor 5735, after starting, the height position of support plate 5732 is adjusted and lifted by the cooperation of screw 5734 and internal thread block 5733, probe component 5737 for performing final electric performance test is penetrated and set in the middle side of the inside of support plate 5732, column 5731, internal thread block 5733, screw 5734, second motor 5735 and shroud 5736 are provided with two groups, and two groups are symmetrically arranged in the middle of support plate 5732, to provide balanced driving force, ensure the stability of support plate 5732 lifting.

[0035] The probe component 5737 comprises a rectangular cover 57371 fixed to the top middle side of the support plate 5732, the third motor 57372 and the fourth motor 57373 are fixed to the left side and the right side of the inside of the rectangular cover 57371 respectively, the first swing rod 57374 is connected to the bottom output shaft of the third motor 57372, one end of the first swing rod 57374 is rotatably connected to the first support rod 57375, the second swing rod 57376 is connected to the bottom output shaft of the fourth motor 57373, and the other end of the second swing rod 57376 is rotatably connected to the second support rod 57377, the second support rod 57377 is rotatably connected above the first support rod 57375 at the end away from the second swing rod 57376, the third motor 57372 and the fourth motor 57373 are used as power sources, a multi-link mechanism is formed through the two support rods and the two swing rods, the degree of freedom of movement is increased, the connecting position of the second support rod 57377 and the first support rod 57375 is provided with a vertical rod 57378, and the probe 57379 is fixedly locked to the bottom side of the vertical rod 57378, so that the vertical rod 57378 drives the probe 57379 to change the position in multiple directions through the multi-link mechanism, and the probe 57379 directly contacts the electrode of the solar cell piece to complete the collection of the electric signal.

[0036] The first pressure position assembly 574 comprises the carrier 5741 fixed to the cover seat 571 on the front side and the back side, the electric push rod 5742 for providing initial downward pressure power is fixedly locked to the inside top side of the carrier 5741, the gear piece 5743 is rotatably connected to the bottom output shaft of the electric push rod 5742, the first rack 5744 and the second rack 5745 are respectively in mesh transmission with the front side and the back side of the gear piece 5743, the linear motion of the two racks is converted into the motion through the gear piece 5743, the first rack 5744 and the second rack 5745 are respectively longitudinally slid on the inside front side and the inside back side of the carrier 5741, the first pressure frame 5746 is fixedly connected to the bottom of the first rack 5744, the second pressure frame 5747 is fixedly connected to the bottom of the second rack 5745, the structure and the size of the first pressure frame 5746 and the second pressure frame 5747 are the same, the linear motion of the two racks makes the first pressure frame 5746 and the second pressure frame 5747 cooperatively compress the solar cell piece on the two sides, and the two racks and the gear piece 5743 form differential gear drive, when one of the first pressure frame 5746 and the second pressure frame 5747 contacts and compresses the solar cell piece, the other pressure frame is limited by the rack on the side of the gear piece 5743 to rotate, so as to drive the other pressure frame to continue to compress, and then the solar cell piece is compressed and positioned at two different height points, and the stability of the solar cell piece is ensured.

[0037] The bottom inner side of the second pressing frame 5747 is provided with a columnar groove, the inner top side of the columnar groove is connected with a spring 57471, the bottom end of the spring 57471 is connected with a convex rod 57472, the convex rod 57472 penetrates and slides in the inner bottom side of the columnar groove, so that the buffer force is provided through the cooperation of the convex rod 57472 and the spring 57471, and after the convex rod 57472 directly contacts the surface of the solar cell piece, a certain range of floating is allowed, so that the solar cell piece is prevented from being crushed, and the uneven surface of the solar cell piece can be adapted.

[0038] The working principle of the solar cell IV detection device is as follows:

[0039] Firstly, when working, the solar cell to be measured is sent into the device from the inlet 2 of the frame cover 1 and is conveyed to the detection position directly below the detection mechanism 5 by the conveying belt body 4, then the detection mechanism 5 starts to work, the first motor 53 is started, power is transmitted to the first fan-shaped gear short rod 561 through the meshing transmission of the worm 54 and the worm gear 55, and the second fan-shaped gear short rod 562 meshed with the first fan-shaped gear short rod 561 is driven to make synchronous reverse motion, and then the rotation motion is converted into the accurate linear downward motion of the bottom displacement seat 565 through the linkage of the first fan-shaped gear long rod 563 and the second fan-shaped gear long rod 564, so as to drive the whole illumination detection structure 57 to move stably downward, in this process, the movement track of the illumination detection structure 57 is limited along the convex piece 511, so as to ensure the accuracy of the vertical motion, when the illumination detection structure 57 is lowered to the lowest position, the cover seat 571 at the bottom thereof is in contact with the conveying belt body 4, so as to form a closed detection space, and the external light is effectively isolated from the test;

[0040] Secondly, after the illumination detection structure 57 is pressed to the position, the illumination unit 572 in the illumination detection structure 57 is first started to provide stable and standard illumination conditions for the solar cell below, so as to simulate the real power generation environment, then the second motor 5735 of the pressure detection assembly 573 is started to drive the screw rod 5734 to rotate, the screw rod 5734 drives the support plate 5732 to slide downward along the stand column 5731 through the thread cooperation with the internal screw block 5733, so as to adjust the overall height of the probe component 5737, so that the probe component 5737 approaches the surface of the solar cell, then the third motor 57372 and the fourth motor 57373 in the probe component 5737 work according to the control signal, the final pose of the stand column 57378 and the probe 57379 is flexibly adjusted through the multi-link mechanism composed of the first swing rod 57374, the second swing rod 57376, the first support rod 57375 and the second support rod 57377, so that the probe 57379 can be accurately aligned and contacted with the electrode grid line of the solar cell, and the physical connection preparation for the subsequent electrical performance test is completed;

[0041] Third, while the probe 57379 is positioned, the first and second pressure assemblies 574 and 575 on both sides perform the operation of pressing and fixing the battery piece. The electric push rod 5742 pushes the gear piece 5743 downward, which is in mesh with the first and second racks 5744 and 5745 to drive the first and second pressing frames 5746 and 5747 to move downward. When the pressing frame on one side first contacts the surface of the battery piece, the movement of the rack on this side will be temporarily resisted, causing the gear piece 5743 to slightly rotate, thereby transmitting more driving force to the rack on the other side, so that the other pressing frame continues to move downward, and finally the pressing at two different height points is realized in sequence. The convex rod 57472 and spring 57471 at the bottom of the first and second pressing frames 5746 and 5747 provide a buffer to adapt to the uneven surface of the battery piece, ensuring that the solar cell piece is firmly and smoothly pressed on the detection station, avoiding movement or vibration during testing.

[0042] Fourth, after all mechanical positioning and electrical contact are completed, the system enters the data acquisition stage. Under standard illumination, the solar cell piece generates a photo-generated current, and the probe 57379 transmits the current and voltage signals at the contact point to the external IV tester, thereby drawing the current-voltage characteristic curve of the battery piece and completing performance detection.

[0043] Fifth, after detection is completed, all actuators are reset in reverse order: the probe 57379 is first lifted and separated from the solar cell piece under the drive of the motor, then the first and second pressure assemblies 574 and 575 are loosened, the lighting unit 572 is turned off, and finally the lower pressing structure 56 drives the lighting and detection structure 57 to rise as a whole under the reverse drive of the first motor 53, leaving space. The solar cell piece that has completed testing is sent out from the outlet 3 by the conveyor main body 4, and the entire device is ready to welcome the next battery piece, thereby realizing continuous automatic detection.

[0044] The above only describes the preferred examples of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A solar cell IV detection device, comprising a frame cover (1), wherein the frame cover (1) is provided with an inlet (2) and an outlet (3) on the left and right sides respectively, and a conveyor belt body (4) for conveying solar cells is installed on the lower middle side of the frame cover (1), characterized in that: A detection mechanism (5) for detecting the IV of the solar cell is connected to the upper middle side of the frame cover (1), and the detection mechanism (5) includes a support (51) fastened to the frame cover (1) at the rear side, a top cover (52) fixedly connected to the top of the support (51), a first motor (53) fastened to the top side of the top cover (52), a worm (54) connected to the bottom output shaft of the first motor (53), a worm wheel (55) meshingly driven on the right side of the worm wheel (54), a pressing structure (56) connected to the middle side of the rear part of the worm wheel (55), and a lighting fixture fixed to the bottom end of the pressing structure (56). A detection structure (57) and two guide rods (58) respectively fixed on the left and right sides of the top of the lighting detection structure (57); the worm (54) passes through and rotates on the middle side of the bottom of the top cover (52); and the bottom end of the worm (54) is rotatably connected to the support (51); the middle part of the worm wheel (55) passes through and rotates on the right side inside the support (51); the upper part of the downward pressure structure (56) is rotatably set on the inner side of the support (51); the bottoms of the left and right sides of the support (51) are both provided with protrusions (511), and the two guide rods (58) respectively pass through and slide inside the two protrusions (511).

2. The solar cell IV detection device according to claim 1, characterized in that: When the lighting detection structure (57) is located at the bottom, its bottom is in contact with the conveyor belt body (4), thereby preventing an external light source from contacting the solar cell sheet.

3. The solar cell IV detection device according to claim 1, characterized in that: The pressing structure (56) comprises a first sector gear short rod (561) coaxially rotating with the worm gear (55), a second sector gear short rod (562) meshingly transmitting on the left side of the first sector gear short rod (561), a first sector gear long rod (563) rotatably connected to the rear side of the right end of the first sector gear short rod (561), a second sector gear long rod (564) rotatably connected to the rear side of the left end of the second sector gear short rod (562), and a shift seat (565) rotatably connected to the bottoms of the first sector gear long rod (563) and the second sector gear long rod (564), the rear sides of the bottoms of the first sector gear short rod (561) and the second sector gear short rod (562) are both rotatably connected to the support (51), the bottoms of the first sector gear long rod (563) and the second sector gear long rod (564) are meshed, and the bottom of the shift seat (565) is fixed to the lighting detection structure (57).

4. A solar cell IV detection device according to claim 3, characterized in that: The angle formed by the second sector gear short rod (562) and the second sector gear long rod (564) is the same as the angle formed by the first sector gear short rod (561) and the first sector gear long rod (563).

5. The solar cell IV detection device according to claim 1, characterized in that: The lighting detection structure (57) includes a cover seat (571) fixed to the lower pressure structure (56) at the middle side of the top, a lighting unit (572) is locked and fixed on the middle upper side of the interior of the cover seat (571), and a pressure measurement component (573) is provided on the middle lower side of the interior of the cover seat (571), and a first pressure component (574) and a second pressure component (575) of the same structure and size are provided on the left and right sides of the pressure measurement component (573), respectively. The first pressure component (574) and the second pressure component (575) are fastened to the left and right sides of the interior of the cover seat (571), and the first pressure component (574) and the second pressure component (575) are located at the same horizontal height.

6. The solar cell IV detection device according to claim 5, characterized in that: The pressure measuring assembly (573) includes a column (5731) fixed to the cover seat (571) on the upper and lower sides, the outer surface of the column (5731) is wrapped with a sliding support plate (5732), an internal thread block (5733) is embedded in the support plate (5732) on the side close to the column (5731), the internal thread block (5733) is threadedly connected to a screw (5734), the top end of the screw (5734) is connected to the bottom output shaft of the second motor (5735), the outer surface of the second motor (5735) is provided with a shield (5736), and the rear side of the shield (5736) is fixed to the cover seat (571), the top side of the screw (5734) passes through and rotates on the bottom of the shield (5736), and a probe component (5737) is passed through the middle side of the support plate (5732).

7. The solar cell IV detection device according to claim 6, characterized in that: The upright column (5731), the internal thread block (5733), the screw (5734), the second motor (5735) and the shield (5736) are each provided in two groups, and the two groups are located in the middle of the support plate (5732) and are arranged in a left-right symmetrical manner.

8. The solar cell IV detection device according to claim 6, characterized in that: The probe component (5737) includes a rectangular cover (57371) fastened to the middle side of the top of the support plate (5732), and a third motor (57372) and a fourth motor (57373) are fastened to the left and right sides of the rectangular cover (57371), respectively. The bottom output shaft of the third motor (57372) is connected to the first swing rod (57374), and the other end of the first swing rod (57374) is rotatably connected to the first support rod (57375). The bottom output shaft of the fourth motor (57373) is connected to the first swing rod (57375). The output shaft is connected to a second rocker arm (57376), and the other end of the second rocker arm (57376) is rotatably connected to a second support rod (57377), one end of the second support rod (57377) away from the second rocker arm (57376) is rotatably connected to the top of the first support rod (57375), and a vertical rod (57378) is provided through the connection between the second support rod (57377) and the first support rod (57375), and a probe (57379) is locked and fixed on the bottom side of the vertical rod (57378).

9. The solar cell IV detection device according to claim 5, characterized in that: The first pressure assembly (574) includes a carrier (5741) fixed to the cover seat (571) on the front and rear sides, an electric push rod (5742) is locked and fixed on the top side of the carrier (5741), and the output shaft at the bottom of the electric push rod (5742) is rotatably connected to a gear plate (5743), and the front and rear sides of the gear plate (5743) are respectively engaged with a first rack (5744) and a second rack (5745), and the first rack (5744) and the second rack (5745) slide longitudinally on the front and rear sides of the carrier (5741), respectively, and the bottom of the first rack (5744) is fixedly connected to a first pressure frame (5746), and the bottom of the second rack (5745) is fixedly connected to a second pressure frame (5747), and the first pressure frame (5746) and the second pressure frame (5747) are identical in structure and size.

10. The solar cell IV detection device according to claim 9, characterized in that: A columnar groove is provided on the inner side of the bottom of the second pressure frame (5747), a spring (57471) is connected to the top side of the columnar groove, a protruding rod (57472) is connected to the bottom end of the spring (57471), and the protruding rod (57472) passes through and slides on the bottom side of the columnar groove.

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