Photovoltaic cell performance detection device

Abstract

The invention relates to the technical field of battery performance detection, and discloses a photovoltaic battery performance detection device, which comprises a detection machine body, a supporting component, a plurality of moving components, a plurality of clamping components and a positioning component, the detection machine body serves as a control core, automatic control over the whole process from battery conveying, positioning, alignment and detection to reset discharging is achieved, the manual intervention intensity is greatly reduced, the detection machine body drives the conveying mechanism to convey the batteries, the detection efficiency is improved, and the detection efficiency is improved. A sensor feeds back a signal to automatically trigger a generator II to drive a positioning strip to complete battery positioning; then a first motor is automatically controlled, a hydraulic cylinder drives a clamping component to complete horizontal alignment and lifting adjustment, and then accurate electrode clamping and power-on detection are achieved through a mechanical arm; and after the detection is finished, each part can be automatically controlled to reset, so that the detection efficiency is improved, and the manual operation error is effectively reduced.

Description

A photovoltaic cell performance testing device Technical Field

[0001] This invention relates to the field of battery performance testing technology, and in particular to a photovoltaic cell performance testing device. Background Technology

[0002] With the rapid development of the photovoltaic industry, photovoltaic cells, as the core component of solar power generation systems, directly determine power generation efficiency and reliability. Therefore, performance testing of photovoltaic cells has become a crucial link in the industrial production chain. Photovoltaic cell performance testing requires accurate measurement of multiple indicators such as photoelectric conversion efficiency, open-circuit voltage, and short-circuit current. This necessitates testing equipment with a stable clamping and positioning structure, precise electrode docking capabilities, and an efficient testing process to meet the testing needs of industrialized mass production and ensure the effectiveness of product quality control.

[0003] The existing equipment relies entirely on manual operation for key stages such as battery loading and positioning, electrode alignment and calibration, and unloading after testing. During loading, operators must manually place the photovoltaic cells precisely at the testing station, which is not only time-consuming and labor-intensive but also makes it difficult to ensure consistent cell placement. In the electrode alignment and calibration stage, manual observation and adjustment of the clamping components are required to align the clamping arms with the battery's input electrodes. This process is not only inefficient but also prone to electrode misalignment due to human error, affecting the stable transmission of testing signals. After testing, the cells still need to be manually removed from the testing station, making continuous unloading impossible. This multi-stage manual intervention model significantly reduces testing efficiency, limiting the testing volume per unit time and making it difficult to meet the high-capacity demands of industrial mass production. Furthermore, the subjectivity and instability of manual operation easily lead to errors, such as loading and positioning deviations and inaccurate electrode alignment. These errors directly affect the consistency and accuracy of testing data, causing some qualified products to be misjudged or unqualified products to enter the market, significantly increasing the difficulty of quality control and production costs for enterprises.

[0004] To address the issue of excessive human intervention, this application proposes a photovoltaic cell performance testing device. By enhancing the device's automated and collaborative operation capabilities, it reduces human involvement and improves testing efficiency and data reliability. Summary of the Invention

[0005] This invention addresses the shortcomings of existing technologies by providing a photovoltaic cell performance testing device, which solves the problems of low testing efficiency and difficulty in adapting to mass production caused by the reliance on manual operation of existing devices.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a photovoltaic cell performance testing device, comprising a testing machine body, a supporting component, multiple moving components, multiple clamping components, and a positioning component; the supporting component is disposed on the top of the testing machine body, the multiple moving components are movably mounted on the top of the supporting component, the clamping component is fixedly mounted on the bottom end of the moving components for clamping the battery input end; the positioning component is fixedly mounted on the top of the testing machine body for positioning and clamping the battery; the testing machine body and the clamping component are connected by cables to realize the transmission of testing signals.

[0007] Preferably, the support component includes four support columns, which are located at the four corners of the testing machine body, and a top frame is fixedly installed on the top of the four support columns to form a support frame.

[0008] Preferably, two sets of parallel limiting slide rods are fixedly installed on the inner wall of the top frame. One of the limiting slide rods has a rack arranged parallel to one side. The two ends of the rack are fixedly connected to the support column on the corresponding side to achieve stable fixation of the rack.

[0009] Preferably, multiple rectangular boxes with the same structure and arranged in parallel are slidably sleeved on the outer walls of the two limiting slide rods, and a motor is fixedly installed on the inner wall of each rectangular box to provide power for the movement of the rectangular box.

[0010] Preferably, the output shaft of the first motor passes through the rectangular box and is rotatably connected to the rectangular box. A gear is fixedly sleeved on the output shaft of the first motor. The gear meshes with a rack and pinion, and drives the rectangular box to move along the limiting slide rod through the gear and rack transmission.

[0011] Preferably, each of the rectangular boxes is fixedly connected to a moving component, the moving component including a hydraulic cylinder fixedly installed on the inner wall of the rectangular box, the output shaft of the hydraulic cylinder passing through the rectangular box and slidably connected to the rectangular box, and the output shaft being fixedly connected to a clamping component; a second limiting slide rod is slidably installed inside the rectangular box, the bottom end of the second limiting slide rod being fixedly connected to the clamping component, used to limit the vertical direction of the clamping component during its extension and retraction.

[0012] Preferably, the clamping component includes a mounting plate, a robotic arm, and a clamping arm. The mounting plate is fixedly connected to the limit slide bar and the output shaft of the hydraulic cylinder. The robotic arm is fixedly mounted on the bottom outer wall of the mounting plate, and a clamping arm is fixedly mounted on its free end. The clamping arm is connected to the testing machine body via a cable and clamps the battery to achieve power-on testing.

[0013] Preferably, the positioning component includes two protective plates and two sets of conveying mechanisms. The two protective plates are respectively fixedly installed on both sides of the testing machine body table. The two sets of conveying mechanisms are respectively fixedly installed on the inner walls of the two protective plates. The conveying mechanisms are composed of brackets and conveying rollers and are used to transport batteries.

[0014] Preferably, a second motor is fixedly installed at the bottom of the protective plate. The second motor is located inside the operating table of the testing machine body, and its output shaft passes through the protective plate and is rotatably connected to the protective plate. A main rod is fixedly sleeved on the output shaft of the second motor. A secondary rod is hinged to both ends of the main rod, and a drive bar is hinged to each of the two secondary rods. Multiple vertical rods are fixedly installed at the top of the two drive bars, and each vertical rod passes through the space between two adjacent conveying rollers in the conveying mechanism.

[0015] Preferably, positioning strips are fixedly installed on the top of multiple vertical bars on both sides, and a wavy rubber strip is provided on the side of the two positioning strips that are close to each other; a sensor is fixedly installed at the top center of the two positioning strips; two limiting strips are fixedly installed at the bottom inlet and outlet of the protective plate, and the corresponding limiting strips are adapted to the bottom of the drive strip and slidably connected to realize the movement limit of the drive strip.

[0016] Compared with existing technologies, this invention has the following advantages: This invention uses the testing machine body as the control core, realizing fully automated control of the entire process from battery conveying, positioning, alignment, detection to resetting and unloading, significantly reducing the intensity of manual intervention. The testing machine body drives the conveying mechanism to transport batteries, and then the sensor feedback signal automatically triggers motor two to drive the positioning bar to complete battery positioning; subsequently, motor one and hydraulic cylinders are automatically controlled to drive the clamping components to complete horizontal alignment and lifting adjustment, and then the robotic arm achieves precise electrode clamping and power-on detection; after detection, the system can automatically control the resetting of each component, improving detection efficiency and effectively reducing human error; during the battery conveying process, The protective plate forms a conveying channel for initial lateral positioning. During the positioning stage, a transmission structure consisting of a motor, main rod, and auxiliary rod, along with the guiding effect of the limiting strip on the drive strip, accurately clamps the battery. Simultaneously, sensors provide real-time feedback of position and pressure signals, ensuring that subsequent testing is initiated only after the positioning pressure meets the standard, effectively preventing battery displacement from affecting the accuracy of the test data. The clamping component is equipped with a multi-degree-of-freedom adjustable robotic arm, which can adapt to the input electrode positions of batteries of different specifications. By using a wavy rubber strip design on the inner side of the positioning strip, the clamping friction is increased to ensure stability, while avoiding rigid contact that could scratch the battery surface, thereby reducing battery wear during the testing process.

[0017] The actions of each component are uniformly scheduled by the main body of the testing machine to complete the processes of feeding, conveying, positioning, alignment, testing, and resetting synchronously. After the testing is completed, each component is reset in a preset order without any action conflicts or gaps in connection, thus improving the overall continuity of testing.

[0018] After a single testing process is completed, the device automatically resets to its initial state and can repeat the testing steps without additional adjustments, adapting to the needs of batch continuous testing. The design of multiple moving parts and clamping parts can support the simultaneous testing of multiple groups of batteries, further improving testing efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the front view of the present invention; Figure 3 is a schematic diagram of the partial structure of the support component of the present invention; Figure 4 is a schematic diagram of the enlarged structure of A in Figure 3 of the present invention; Figure 5 is a schematic diagram of the cooperation structure between the moving component and the clamping component of the present invention; Figure 6 is a schematic diagram of the overall structure of the clamping component of the present invention; Figure 7 is a schematic diagram of the overall structure of the positioning component of the present invention; Figure 8 is a schematic diagram of the exploded structure of the positioning component of the present invention; Figure 9 is a schematic diagram of the side view of the positioning component of the present invention.

[0021] Drawing number explanation: 1. Inspection machine body; 2. Support component; 20. Support column; 21. Top frame; 211. Limiting slide bar one; 212. Rack; 213. Motor one; 214. Gear; 3. Moving component; 30. Hydraulic cylinder; 31. Limiting slide bar two; 4. Clamping component; 40. Mounting plate; 41. Robotic arm; 42. Clamping arm; 5. Positioning component; 50. Protective plate; 501. Limiting bar; 51. Conveying mechanism; 52. Motor two; 521. Main rod; 522. Secondary rod; 523. Drive bar; 5231. Vertical rod; 5232. Positioning bar; 5233. Sensor. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings.

[0023] The following description is intended to disclose the invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0024] Those skilled in the art should understand that, in the disclosure of this invention, the terms "longitudinal," "lateral," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing this invention and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this invention.

[0025] It is understood that the term "a" should be understood as "at least one" or "one or more," that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0026] Example 1: Please refer to Figures 1-9. A photovoltaic cell performance testing device includes a testing machine body 1, a support component 2, multiple moving components 3, multiple clamping components 4, and a positioning component 5. The support component 2 is fixedly installed on the top of the testing machine body 1 to provide a mounting support base for the moving components 3. The multiple moving components 3 are movably installed on the top of the support component 2 and can be adjusted horizontally along the support component 2. The multiple clamping components 4 are fixedly installed one-to-one at the bottom of the moving components 3 to clamp the input end of the battery and establish a conductive connection. The positioning component 5 is fixedly installed on the top of the testing machine body 1 to position, limit, and clamp the battery entering the testing area, ensuring the battery position is stable during the testing process. The testing machine body 1 and each clamping component 4 are connected by conductive cables, which are used to transmit testing signals and power supply signals, enabling the testing machine body 1 to perform performance testing on the battery.

[0027] The support component 2 includes four support columns 20 and a top frame 21. The four support columns 20 are arranged in a rectangular array and are fixedly installed at the four top corners of the top of the testing machine body 1. The top end face of the four support columns 20 is fixedly connected to the bottom end face of the top frame 21, and the top frame 21 is erected directly above the testing machine body 1 through the four support columns 20, forming a support frame structure for installing the moving component 3.

[0028] Two sets of parallel limiting slide rods 211 are fixedly installed on the inner wall of the top frame 21 in the horizontal direction. The two sets of limiting slide rods 211 extend along the length of the top frame 21. A rack 212 is arranged parallel to one side of one set of limiting slide rods 211. The length direction of the rack 212 is consistent with the length direction of the limiting slide rod 211, and the two ends of the rack 212 are fixedly connected to the inner wall of the corresponding support column 20 to achieve stable positioning of the rack 212.

[0029] Multiple rectangular boxes 22 with identical structures and arranged in parallel are slidably sleeved on the outer walls of the two sets of limiting slide rods 211. Each rectangular box 22 is slidably engaged with the two sets of limiting slide rods 211 through a sliding hole opened in its inner wall, and can slide smoothly along the length direction of the limiting slide rods 211. A motor 221 is fixedly installed on the inner side wall of each rectangular box 22, and the motor 221 provides a power source for the movement of the rectangular box 22.

[0030] The output shaft of motor 221 passes through the side wall of rectangular box 22 in a horizontal direction, and the point where the output shaft of motor 221 passes through rectangular box 22 is rotatably connected by a bearing to ensure smooth rotation of the output shaft; a gear 222 is fixedly sleeved at the end of the output shaft of motor 221 that extends out of rectangular box 22, and the gear 222 meshes with the rack 212. The gear 222 is driven to rotate by motor 221, and the rectangular box 22 is driven to move horizontally along the limiting slide bar 211 by means of the meshing transmission between the gear 222 and the rack 212.

[0031] Each rectangular box 22 has its bottom end fixedly connected to a corresponding moving part 3. The moving part 3 includes a hydraulic cylinder 30 and a limiting slide bar 31. The hydraulic cylinder 30 is fixedly installed on the top of the inner wall of the rectangular box 22. The output shaft of the hydraulic cylinder 30 passes through the bottom wall of the rectangular box 22 vertically downwards, and the output shaft of the hydraulic cylinder 30 is slidably connected to the penetration point of the rectangular box 22 through a linear bearing. The bottom end of the output shaft of the hydraulic cylinder 30 is fixedly connected to the corresponding clamping part 4. The vertical lifting and lowering adjustment of the clamping part 4 is achieved by driving the extension and retraction of the hydraulic cylinder 30. The limiting slide bar 31 is slidably installed in the guide hole opened inside the rectangular box 22 vertically. The bottom end of the limiting slide bar 31 is fixedly connected to the top end of the clamping part 4. It is used to guide and limit the clamping part 4 vertically during the extension and retraction of the clamping part 4 with the hydraulic cylinder 30, so as to prevent the clamping part 4 from deviating.

[0032] The clamping component 4 includes a mounting plate 40, a robotic arm 41, and a clamping arm 42. The top end face of the mounting plate 40 is fixedly connected to the bottom end of the limiting slide bar 31 and the bottom end of the output shaft of the hydraulic cylinder 30, respectively, to achieve a stable assembly of the mounting plate 40. The robotic arm 41 is fixedly installed on the bottom outer wall of the mounting plate 40. The robotic arm 41 can achieve multi-degree-of-freedom angle adjustment. The free end of the robotic arm 41 is fixedly installed with the clamping arm 42. The clamping arm 42 is a conductive clamping structure, and the clamping arm 42 is conductively connected to the testing machine body 1 through a cable. The clamping arm 42 is clamped on the input electrode of the battery. The detection signal and power supply signal are transmitted between the testing machine body 1 and the battery through the cable, thereby completing the power-on test of the battery.

[0033] The positioning component 5 includes two protective plates 50 and two sets of conveying mechanisms 51. The two protective plates 50 are symmetrically fixedly installed on both sides of the table surface of the testing machine body 1. The two protective plates 50 are arranged opposite each other and form a battery conveying channel. The two sets of conveying mechanisms 51 are fixedly installed one-to-one on the opposite inner walls of the two protective plates 50. Each set of conveying mechanisms 51 consists of a bracket and multiple conveying rollers. The multiple conveying rollers are installed on the bracket in parallel and at intervals. The bracket is fixedly connected to the inner wall of the protective plate 50. Through the coordinated rotation of the two sets of conveying mechanisms 51, the battery is conveyed to the testing area.

[0034] Each protective plate 50 has a motor 52 fixedly installed at its bottom. The motor 52 is embedded inside the operating table of the main body 1 of the testing machine. The output shaft of the motor 52 passes through the side wall of the protective plate 50 in a horizontal direction, and the output shaft of the motor 52 is rotatably connected to the penetration point of the protective plate 50 through a bearing. A main rod 521 is fixedly sleeved on the output shaft of the motor 52. The two ends of the main rod 521 are respectively hinged to the auxiliary rods 522. The ends of the two auxiliary rods 522 away from the main rod 521 are respectively hinged to the drive bar 523. The top of the two drive bars 523 are respectively evenly fixedly installed with multiple vertical rods 5231 along the length direction. Each vertical rod 5231 is vertically upward and passes through the gap between two adjacent conveying rollers in the corresponding conveying mechanism 51. The vertical rod 5231 and the conveying roller do not interfere with each other.

[0035] The top ends of multiple vertical rods 5231 on the same side of the protective plate 50 are fixedly connected to the bottom end of the same positioning strip 5232, forming a positioning strip 5232 on each side. Rubber strips are fixedly attached to the sides of the two positioning strips 5232 that are close to each other. The surface of the rubber strips is wavy to increase friction when clamping the battery and prevent damage to the battery surface. Sensors 5233 are fixedly installed at the top center of each of the two positioning strips 5232. The sensors 5233 are used to detect the battery position, enabling precise clamping of the battery by the positioning strips 5232. Two limiting strips 501 are fixedly installed at the bottom of the protective plate 50 near the inlet / outlet end. The two limiting strips 501 are slidably adapted to the bottom of the corresponding drive strip 523. The bottom of the drive strip 523 has a groove matching the limiting strip 501. The drive strip 523 is slidably connected to the limiting strip 501 through the groove, thus guiding and limiting the movement direction of the drive strip 523.

[0036] During operation, the testing machine body 1 is started first, and the system automatically resets all components—the hydraulic cylinder 30 of the moving component 3 is in a retracted state, driving the clamping component 4 to a high position; the two positioning bars 5232 of the positioning component 5 are in an initial position away from each other; the conveying rollers of the conveying mechanism 51 are in a standby state. The operator places the photovoltaic cell to be tested steadily on the conveying rollers of the two sets of conveying mechanisms 51, ensuring that the edge of the cell does not exceed the conveying channel range formed by the protective plate 50.

[0037] The conveying command is issued by the main body 1 of the testing machine, and the conveying rollers of the two sets of conveying mechanisms 51 rotate synchronously and in the same direction. With the help of the friction between the conveying rollers and the bottom of the battery, the battery moves along the conveying channel to the testing area at the top of the main body 1 of the testing machine.

[0038] When the battery moves to the preset position in the detection area, the sensor 5233 at the top center of the positioning strip 5232 detects the battery signal and immediately feeds it back to the detection machine body 1. The detection machine body 1 then controls the conveying mechanism 51 to stop rotating and simultaneously starts the second motor 52 at the bottom of the protective plate 50. The output shaft of the second motor 52 drives the main rod 521 to rotate. The main rod 521 pushes the drive strip 523 to slide smoothly along the limit strip 501 towards the battery through the auxiliary rods 522 hinged at both ends. The sliding groove at the bottom of the drive strip 523 matches the limit strip 501 to ensure a stable sliding trajectory. The multiple vertical rods 5231 at the top of the drive strip 523 synchronously drive the positioning strip 5232 to move until the wavy rubber strip on the inner side of the positioning strip 5232 is tightly attached to both sides of the battery. After the sensor 5233 detects that the positioning pressure is up to standard, it feeds back a signal to the detection machine body 1, the second motor 52 stops running, and the battery is positioned and fixed. The wavy rubber strip increases the clamping friction and effectively avoids scratching the battery surface.

[0039] The main body 1 of the testing machine issues an alignment command, activating motor 221 inside the rectangular box 22 on the top frame 21 of the support component 2. The output shaft of motor 221 drives gear 222 to rotate. Since gear 222 meshes with rack 212, and the rectangular box 22 is fitted onto two sets of limiting slide rods 211 through sliding holes, the rotation of gear 222 is converted into horizontal movement of the rectangular box 22 along the limiting slide rods 211 until the moving component 3 and clamping component 4 connected to the bottom of the rectangular box 22 are aligned with the electrode position of the battery input end; motor 221 stops running, and horizontal alignment is completed. Subsequently, the hydraulic cylinder 30 of the moving component 3 starts, and the output shaft extends downward, driving the clamping component 4 to descend synchronously. The second limiting slide rod 31 slides synchronously along the guide hole inside the rectangular box 22, providing vertical guidance and limiting for the lifting and lowering of the clamping component 4 to prevent deviation; when the clamping arm 42 of the clamping component 4 is lowered to the same height as the battery input end electrode, the hydraulic cylinder 30 stops running, and the lifting and lowering adjustment is completed.

[0040] The testing machine body 1 controls the movement of the robotic arm 41 of the clamping component 4. The robotic arm 41, through multi-degree-of-freedom angle adjustment, drives the clamping arm 42 to accurately clamp onto the electrode at the battery input end. After stable clamping, the testing machine body 1 establishes a conductive connection with the clamping arm 42 via a conductive cable; the clamping arm 42 is a conductive structure. Subsequently, the testing machine body 1 transmits a power supply signal to the battery via the conductive cable, while simultaneously acquiring the detection signals fed back by the battery. This completes various performance tests of the photovoltaic cell, such as photoelectric conversion efficiency, open-circuit voltage, and short-circuit current. The test data is transmitted to the testing machine body 1 in real time for processing and storage.

[0041] After the performance test is completed, the testing machine body 1 issues a reset command: First, the clamping arm 42 releases the battery input electrode, and the robotic arm 41 resets; then, the output shaft of the hydraulic cylinder 30 retracts, driving the clamping component 4 to rise to the high position along the second limit slide bar 31; subsequently, the first motor 221 runs in reverse, driving the rectangular box 22 to move to the initial position along the first limit slide bar 211; at the same time, the second motor 52 runs in reverse, and the main rod 521 pulls the drive bar 523 along the limit bar 501 to slide in reverse through the auxiliary rod 522, and the positioning bar 5232 disengages from the battery and returns to the initial distanced state; finally, the conveying roller of the conveying mechanism 51 rotates in reverse, conveying the tested battery out of the testing area. If continuous testing is required, the above steps can be repeated.

[0042] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments, and any modifications or variations of the embodiments of the present invention may be made without departing from the stated principles.

Claims

1. A photovoltaic cell performance testing device, characterized in that: The device includes a testing machine body (1), a support component (2), multiple moving components (3), multiple clamping components (4), and a positioning component (5). The support component (2) is located on the top of the testing machine body (1). The multiple moving components (3) are movably installed on the top of the support component (2). The clamping component (4) is fixedly installed on the bottom of the moving component (3) for clamping the battery input end. The positioning component (5) is fixedly installed on the top of the testing machine body (1) for positioning and clamping the battery. The testing machine body (1) and the clamping component (4) are connected by a cable.

2. The photovoltaic cell performance testing device according to claim 1, characterized in that: The support component (2) includes four support columns (20), which are located at the four corners of the main body (1) of the testing machine, and the top of the four support columns (20) is fixedly installed with a top frame (21).

3. The photovoltaic cell performance testing device according to claim 2, characterized in that: Two sets of parallel limiting slide rods (211) are fixedly installed on the inner wall of the top frame (21). One of the limiting slide rods (211) has a rack (212) arranged parallel to one side. The two ends of the rack (212) are fixedly connected to the support column (20) on the corresponding side.

4. The photovoltaic cell performance testing device according to claim 3, characterized in that: Multiple rectangular boxes (22) with the same structure and arranged in parallel are slidably sleeved on the outer walls of the two limiting slide rods (211). A motor (221) is fixedly installed on the inner wall of each rectangular box (22) to provide power for the movement of the rectangular box (22).

5. The photovoltaic cell performance testing device according to claim 4, characterized in that: The output shaft of the motor (221) passes through the rectangular box (22) and is rotatably connected to the rectangular box (22). A gear (222) is fixedly sleeved on the output shaft of the motor (221), and the gear (222) meshes with the rack (212).

6. The photovoltaic cell performance testing device according to claim 5, characterized in that: Each of the rectangular boxes (22) is fixedly connected to a moving component (3). The moving component (3) includes a hydraulic cylinder (30) fixedly installed on the inner wall of the rectangular box (22). The output shaft of the hydraulic cylinder (30) passes through the rectangular box (22) and is slidably connected to the rectangular box (22). The output shaft is fixedly connected to the clamping component (4). A second limiting slide rod (31) is slidably installed inside the rectangular box (22). The bottom end of the second limiting slide rod (31) is fixedly connected to the clamping component (4).

7. The photovoltaic cell performance testing device according to claim 6, characterized in that: The clamping component (4) includes a mounting plate (40), a robotic arm (41), and a clamping arm (42). The mounting plate (40) is fixedly connected to the output shaft of the limiting slide bar (31) and the hydraulic cylinder (30). The robotic arm (41) is fixedly mounted on the bottom outer wall of the mounting plate (40), and the clamping arm (42) is fixedly mounted on its free end. The clamping arm (42) is connected to the inspection machine body (1) via a cable.

8. The photovoltaic cell performance testing device according to claim 1, characterized in that: The positioning component (5) includes two protective plates (50) and two sets of conveying mechanisms (51). The two protective plates (50) are respectively fixedly installed on both sides of the table of the testing machine body (1). The two sets of conveying mechanisms (51) are respectively fixedly installed on the inner wall of the two protective plates (50). The conveying mechanism (51) is composed of a bracket and a conveying roller.

9. A photovoltaic cell performance testing device according to claim 8, characterized in that: The bottom of the protective plate (50) is fixedly installed with a motor (52). The motor (52) is located inside the operating table of the main body (1) of the testing machine. Its output shaft passes through the protective plate (50) and is rotatably connected to the protective plate (50). A main rod (521) is fixedly sleeved on the output shaft of the motor (52). The two ends of the main rod (521) are respectively hinged with auxiliary rods (522). The two auxiliary rods (522) are respectively hinged with drive bars (523). The top of the two drive bars (523) is respectively fixedly installed with multiple vertical rods (5231). Each vertical rod (5231) passes through the space between two adjacent conveying rollers in the conveying mechanism (51).

10. A photovoltaic cell performance testing device according to claim 9, characterized in that: Positioning strips (5232) are fixedly installed on the top of the multiple vertical bars (5231) on both sides, and a wavy rubber strip is provided on the side of the two positioning strips (5232) that are close to each other; a sensor (5233) is fixedly installed at the center of the top of the two positioning strips (5232); two limiting strips (501) are fixedly installed at the bottom inlet and outlet of the protective plate (50), and the corresponding limiting strips (501) are adapted to the bottom of the drive strip (523) and are slidably connected.

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