A dual half-piece back contact cell IV detection device
By designing a dual-half-cell back-contact solar cell IV detection device, the synchronous detection of two solar cells was achieved, solving the problems of insufficient efficiency and accuracy in the existing technology, improving detection efficiency and accuracy, and meeting market demand.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DR LASER TECH(WUXI) CO LTD
- Filing Date
- 2025-04-10
- Publication Date
- 2026-05-29
AI Technical Summary
In existing technologies, the IV detection efficiency and accuracy of half-cell solar cells are low, making it difficult to meet market demands.
A dual-half-cell back-contact solar cell IV testing device is designed, including a turntable mechanism and a testing mechanism. By cooperating with a simulated light source, an upper pressing component, and a lower pressing component, the device enables synchronous testing of two solar cells. The device ensures testing accuracy by utilizing the precise alignment of a correction platform and a probe plate.
This improves the efficiency and accuracy of cell testing, meets the market demand for increased half-cell solar cell production capacity, ensures precise alignment between the probe and the cell testing point, and improves testing accuracy.
Smart Images
Figure CN224306292U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of solar cell manufacturing technology, and in particular to an IV detection device for dual half-cell back contact solar cells. Background Technology
[0002] The final step in solar cell production is to conduct IV testing to evaluate parameters such as cell conversion efficiency and output power, thereby classifying the cells into grades.
[0003] IV testing requires photographing and positioning the solar cell, then correcting the cell or probe alignment to ensure probe contact with the grid lines. With the increasing adoption of half-cell solar cell modules, market demands for half-cell production capacity are rising, simultaneously increasing the need for higher positioning accuracy in IV testing probes. Therefore, improving cell testing efficiency while maintaining accuracy is a critical issue for researchers. Utility Model Content
[0004] This application provides a dual-half-cell back-contact solar cell IV detection device, which aims to solve the problem of improving detection efficiency and ensuring detection accuracy in the existing solar cell IV detection technology.
[0005] To achieve the above objectives, this application proposes a dual-half-cell back-contact solar cell IV testing device, which includes:
[0006] The testing mechanism, set at the testing station, includes a simulated light source, a mounting base, and an upper pressing assembly and a lower pressing assembly slidably mounted on the mounting base. The upper pressing assembly includes a lower transparent plate. The simulated light source is positioned above the upper pressing assembly to provide simulated sunlight to the solar cells through the lower transparent plate. The lower pressing assembly includes two side-by-side correction platforms and probe plates mounted on each correction platform. The probe contacts on the probe plates face upwards. The correction platforms are used to adjust their positions based on the position information of their respective solar cells, so that each probe on the probe plate is aligned with the corresponding testing point on the solar cell.
[0007] A turntable mechanism includes a turntable and at least one adsorption platform disposed around the turntable. The adsorption platform is used to simultaneously adsorb two battery cells. The turntable drives the adsorption platform to rotate around it and passes through a detection station on the rotation path of the adsorption platform.
[0008] The upper pressing assembly is used to press down on the battery cell, so that the lower pressing transparent plate abuts against the front of the battery cell, and the lower pressing assembly is used to press up on the battery cell so that the probe on the probe plate contacts the detection point on the battery cell.
[0009] In some embodiments, the mounting base includes a first mounting base and a second mounting base disposed opposite to each other, the pressing transparent plate is fixed to the first fixed plate, the two correction platforms are disposed on the second fixed plate, and the first fixed plate and the second fixed plate are slidably disposed between the first mounting base and the second mounting base;
[0010] Both the first mounting base and the second mounting base are provided with guide structures, and both ends of the first fixing plate and both ends of the second fixing plate are respectively connected to the first mounting base and the second mounting base through the guide structures.
[0011] In some embodiments, the guide structure is a linear guide rail arranged in the vertical direction; both ends of the first fixing plate and both ends of the second fixing plate are connected to support plates, the support plates at both ends are mirror images of each other, the support plates include a first plate and a second plate that are perpendicular to each other, the second plate in the support plates at both ends is used to connect to the linear guide rail respectively, and the first plate in the support plates at both ends is used to jointly support and fix the corresponding fixing plates.
[0012] In some embodiments, a positioning mechanism is further included, the positioning mechanism comprising:
[0013] Multiple positioning cameras are used to photograph the battery cells transferred to the adsorption platform to record the position information of the battery cells;
[0014] Multiple light sources for photography, each corresponding to one of the aforementioned positioning cameras, are used to provide uniform, non-reflective illumination;
[0015] The positioning mechanism is located before the testing station.
[0016] In some embodiments, the positioning mechanism further includes a protective component, which includes a protective box and a transparent baffle. The top of the protective box is designed to be open, and multiple positioning cameras and multiple photo-taking light sources are disposed inside the protective box. The transparent baffle is disposed between the protective box and the adsorption platform above it.
[0017] In some embodiments, it also includes:
[0018] The adsorption platform has a loading station, a testing station and a unloading station arranged sequentially along its rotation path. The dual half-cell back contact battery cell IV testing device also includes a loading mechanism and an unloading mechanism.
[0019] The feeding mechanism includes a feeding conveyor mechanism and a feeding transport mechanism. The feeding conveyor mechanism includes two parallel belt conveyor lines that synchronously transport two battery cells. The feeding conveyor mechanism is used for the incoming transport of battery cells. The feeding transport mechanism is connected between the end of the feeding conveyor mechanism and the feeding station. The feeding transport mechanism is a rotating suction cup robot arm used to transport and transfer the battery cells from the feeding conveyor mechanism to the suction table.
[0020] The unloading mechanism includes an unloading conveying mechanism and an unloading transport mechanism. The unloading conveying mechanism includes two parallel belt conveyor lines that synchronously transport two battery cells. The unloading conveying mechanism is used for unloading and transporting the battery cells. The unloading transport mechanism is connected between the unloading station and the starting end of the unloading conveying mechanism. The unloading transport mechanism is a rotating suction cup robot arm used to transport and transfer the battery cells from the suction table to the unloading conveying mechanism.
[0021] In some embodiments, the turntable mechanism includes a turntable and four adsorption platforms arranged around the turntable, wherein a loading station, an inspection station, an unloading station and a fourth station are sequentially arranged on the rotation path of the adsorption platforms.
[0022] The loading station, the unloading station, the loading conveyor mechanism, and the unloading conveyor mechanism are on the same straight line, and the loading and unloading conveyor mechanisms are rotating suction cup manipulators that maintain the material direction.
[0023] In some embodiments, both the loading and unloading conveying mechanism and the unloading conveying mechanism include:
[0024] A base assembly, including a base and a rotation drive member disposed on the base;
[0025] A cantilever assembly includes a cantilever, one end of which is connected to the rotation axis of the rotary drive member to rotate horizontally about the rotation axis under the drive of the rotary drive member.
[0026] A suction cup assembly includes a suction cup and a connecting shaft connected to the suction cup, the connecting shaft passing through the other end of the cantilever and rotatably disposed relative to the cantilever;
[0027] A direction-keeping component, connected to the connecting shaft and the base, is used to lock the direction of the suction cup.
[0028] In some embodiments, the direction-maintaining assembly includes a first synchronous pulley, a second synchronous pulley, and a synchronous belt connecting the first synchronous pulley and the second synchronous pulley; the first synchronous pulley is fixedly connected to the base and coaxially arranged with the rotation shaft; the second synchronous pulley has the same dimensional parameters as the first synchronous pulley, and the second synchronous pulley is coaxially connected to a connecting shaft passing through the cantilever.
[0029] In some embodiments, the unloading mechanism further includes a waste collection box disposed on one side of the unloading conveying mechanism, the waste collection box being located on the moving path of the unloading conveying mechanism; and / or,
[0030] The correction platform is the XYR platform.
[0031] This application proposes an IV testing device for dual-half-cell back-contact solar cells. The device includes a turntable mechanism and a testing mechanism. The testing mechanism includes a simulated light source, a mounting base, and an upper pressing assembly and a lower pressing assembly slidably mounted on the mounting base. After the turntable mechanism synchronously transports two solar cells between the upper and lower pressing assemblies, a transparent lower pressing plate in the upper pressing assembly presses against the front of the solar cell. A probe plate in the lower pressing assembly contacts the testing points on the solar cell, enabling simultaneous IV testing of both solar cells to improve testing efficiency. The lower pressing assembly includes two side-by-side correction platforms and probe plates mounted on each correction platform. Probes on the probe plates contact the testing points on the corresponding solar cell from the back side. Each correction platform can adjust its position based on the position information of its corresponding solar cell, ensuring precise alignment of the probes on the probe plate with the corresponding solar cell and ensuring the testing accuracy of each solar cell. Attached Figure Description
[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:
[0033] Figure 1 This is a schematic diagram of the structure of a dual-half-cell back-contact battery cell IV detection device according to an embodiment of this application;
[0034] Figure 2 This is a schematic diagram of the structure of a testing mechanism according to an embodiment of this application;
[0035] Figure 3 for Figure 2 Schematic diagram of the middle and lower pressing assembly;
[0036] Figure 4This is a schematic diagram of the structure of a material handling mechanism according to an embodiment of this application. Detailed Implementation
[0037] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0038] It should be noted that, unless otherwise stated or limited, all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.
[0039] It should also be noted that, unless otherwise stated or limited, when an element is referred to as "fixed to" or "set on" another element, it may be directly on the other element or there may be an intervening element present. When an element is referred to as "connected to" another element, it may be directly connected to the other element or there may be an intervening element present.
[0040] Furthermore, unless otherwise stated or limited, the descriptions involving "first," "second," etc., in this application are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.
[0041] See Figure 1 As shown, this application proposes an IV testing device for dual half-cell back contact solar cells. The device includes a turntable mechanism 10 and a testing mechanism 20. The turntable mechanism 10 is used to carry two solar cells and drive the two solar cells to different work positions, so as to realize the IV testing of the two solar cells in further cooperation with the testing mechanism 20.
[0042] Among them, see Figure 2 and Figure 3The testing mechanism 20 includes a simulated light source (not shown in the attached drawings), a mounting base 21, and an upper pressing assembly 22 and a lower pressing assembly 23 slidably disposed on the mounting base 21. The upper pressing assembly 22 includes a first fixed plate 221 and a lower pressing transparent plate 222. The lower pressing transparent plate 222 is mounted on the first fixed plate 221. The simulated light source is disposed above the upper pressing assembly 22 to provide simulated sunlight to the solar cells through the lower pressing transparent plate 222. The lower pressing assembly 23 includes a second fixed plate 231 and two alignment corrections arranged side by side on the second fixed plate 231. The platform 232 and the probe plate 233 installed on the correction platform 232 are configured with the probe contacts of each probe on the probe plate 233 facing upwards. The correction platform 232 is used to adjust the position based on the position information of the corresponding solar cell so that each probe on the probe plate 233 is aligned with the detection point on the corresponding solar cell. The upper pressing assembly 22 is used to press down on the solar cell so that the lower pressing transparent plate 222 presses against the front of the solar cell. The lower pressing assembly 23 is used to press up on the solar cell so that the probes on the probe plate 233 contact the detection point on the solar cell.
[0043] Thus, based on the structural composition of the turntable mechanism 10 and the detection mechanism 20, an IV detection process for solar cells is as follows: the turntable mechanism 10 rotates stepwise, synchronously transporting two solar cells between the upper pressing assembly 22 and the lower pressing assembly 23. Then, the correction platform 232 in the lower pressing assembly 23 performs position fine-tuning according to the pre-known position information of the corresponding solar cells, ensuring that each probe on the probe plate 233 is precisely aligned with the detection point on the back of the solar cell. Subsequently, the first fixing plate 221 drives the lower pressing transparent plate 222 to press against the front of the solar cell, and the second fixing plate 231 drives the two sets of probe plates 233 to move, so that the probes on the two sets of probe plates are respectively pressed against the detection point on the back of the solar cell. The simulated light source provides simulated sunlight, which passes through the lower pressing transparent plate 222 and shines on the front of the solar cell. The probes on the probe plate 233 measure the current and voltage of the solar cell in real time and record the IV characteristics. After the detection is completed, the lower pressing transparent plate 222 and the probe plate 233 are reset, and the turntable mechanism 10 transfers the two solar cells out of the detection station.
[0044] As can be seen, based on the device structure proposed in this application, the testing device can simultaneously test two solar cells, thereby improving the testing efficiency. Furthermore, after the turntable mechanism 10 transports the two solar cells between the upper pressing assembly 22 and the lower pressing assembly 23, the correction platform 232 in the lower pressing assembly 23 can be adjusted based on the position information of the corresponding solar cells. Ultimately, the probes on the two sets of probe plates 233 are precisely aligned with the testing points on the solar cells, thus ensuring the testing accuracy of each solar cell. Compared to correction before the testing station, the correction accuracy is higher and saves time.
[0045] Among them, the correction platform 232 adopts the XYR correction platform. The design of the XYR correction platform combines the motion capabilities of the X-axis, Y-axis and R-axis. Based on its high precision characteristics, it can drive the probe plate 233 set on it to make small and precise adjustments according to the actual position information of the battery cell, so that the probe on the probe plate 233 is precisely aligned with the detection point on the back of the battery cell.
[0046] It is worth noting that the downward pressing transparent plate 222 provided in this application simultaneously presses two battery cells together. Therefore, the transmission range of the downward pressing transparent plate 222 is large enough so that the simulated light source provided above the upper pressing component 22 can simultaneously illuminate the two battery cells, ensuring the accuracy of the test data.
[0047] See Figures 1-3 As shown, in some embodiments, the mounting base 21 includes a first mounting base and a second mounting base disposed opposite to each other. A first fixing plate 221 and a second fixing plate 231 are slidably disposed between the first mounting base and the second mounting base. Both the first mounting base and the second mounting base are provided with guide structures 211. Both ends of the first fixing plate 221 and both ends of the second fixing plate 231 are connected by the guide structures 211.
[0048] They are connected to the first mounting base and the second mounting base respectively. In this way, the first mounting base and the second mounting base provide a solid foundation, and the connection through the guide structure 211 ensures that the first fixing plate 221 and the second fixing plate 231 can slide smoothly and accurately along the predetermined path, thereby improving the accuracy of the detection.
[0049] Furthermore, the guide structure 211 is a linear guide rail arranged in the vertical direction; preferably, two linear guide rails are arranged side by side on the opposite surfaces of the first mounting base and the second mounting base. To achieve a stable connection between the first fixing plate 221 and the second fixing plate 231, support plates 234 are connected to both ends of the first fixing plate 221 and both ends of the second fixing plate 231, with the support plates 234 arranged in a mirror image. Specifically, the support plate 234 includes a first plate body 235 and a second plate body 236 that are perpendicular to each other. The first plate body 235 is arranged vertically, while the second plate body 236 extends laterally from the lower end of the first plate body. This allows the second plate body 236 in the support plates 234 to jointly support and fix the corresponding fixing plates, providing a stable support surface for the fixing plates. The first plate body 235 in the support plates 234 is used to connect to the linear guide rails on both sides, ensuring that the fixing plates can slide smoothly along the linear guide rails.
[0050] See Figure 1As shown, in some embodiments, the turntable mechanism 10 includes a turntable 11 and at least one adsorption platform 12 disposed around the turntable 11. The adsorption platform 12 is used to simultaneously adsorb two battery cells. The turntable 11 drives the adsorption platform 12 to rotate around it, and a loading station, a detection station, and a unloading station are sequentially arranged on the rotation path of the adsorption platform 12. The detection mechanism 20 is correspondingly disposed at the detection station. The adsorption platform 12 transfers two battery cells to the detection station so that the upper pressing component 22 and the lower pressing component 23 press the two battery cells together.
[0051] In this embodiment, a turntable mechanism 10 is proposed. The turntable 11 drives the adsorption table 12 to rotate around its center, enabling rapid transfer of battery cells between different workstations, simplifying the operation process and shortening the processing time. Along the rotation path of the adsorption table 12, a loading station, a testing station, and a unloading station are sequentially arranged. The loading station is used to place the battery cells onto the adsorption table 12 in preparation for subsequent testing. The testing station, where the testing mechanism 20 is located, allows the upper pressing component 22 and the lower pressing component 23 of the testing mechanism 20 to press the two battery cells together for testing when the adsorption table 12 transfers them to the testing station. The unloading station is used to transfer the tested battery cells to this location for further processing.
[0052] In a preferred embodiment, four adsorption platforms 12 are equally spaced around the turntable 11. In addition to the loading station, inspection station, and unloading station, a fourth station is also provided on the rotation path of the adsorption platform 12. In this way, the solar cells can be operated simultaneously at each station, avoiding wasting time waiting for the next processing step and realizing continuous and efficient solar cell processing. The fourth station can be an empty station or a station that performs other functions. It is only necessary to configure the corresponding functional components at the fourth station.
[0053] The adsorption platform 12 has a hollowed-out clearance hole, which allows the probe on the probe plate 233 to pass through the adsorption platform 12 and contact the detection point on the back of the battery cell during the testing process. A suction nozzle for adsorbing the battery cell is provided on the hollowed-out adsorption platform 12, and the suction nozzle completes the fixation of the battery cell.
[0054] See Figure 1 As shown, in some embodiments, the device further includes a positioning mechanism 30, which is disposed at the inspection station or at a station preceding the inspection station, to obtain the position information of the two battery cells. As one feasible solution, it is disposed below the loading station, and the positioning mechanism 30 includes multiple positioning cameras and multiple image light sources. At other stations, the positioning mechanism 30 can also be disposed above the station.
[0055] Multiple positioning cameras are used to photograph the battery cells transferred to the adsorption table 12 at the loading station. When the battery cell is placed on the adsorption table 12 at the loading station, the positioning mechanism 30 starts working to record the position information of the battery cell, thereby providing reference data for the adjustment of the correction module in the subsequent detection mechanism 20. Multiple photographic light sources correspond one-to-one with each positioning camera to provide uniform and non-reflective illumination.
[0056] Furthermore, the positioning mechanism also includes a protective component, which includes a protective box and a transparent baffle. The top of the protective box is designed to be open, and multiple positioning cameras and multiple photo-taking light sources are set inside the protective box. The transparent baffle is set between the protective box and the adsorption platform 12 above it.
[0057] Furthermore, the protective box effectively protects the internal positioning camera and photographic light source from external interference and damage. The protective box is typically made of sturdy and durable materials, with an open top design to facilitate the shooting operation of the positioning camera and photographic light source. Additionally, a transparent baffle is placed between the protective box and the upper adsorption platform 12, which not only prevents fragments from broken battery cells from entering the positioning camera but also ensures light transmission, allowing the positioning camera and photographic light source to clearly capture images of the battery cells.
[0058] See Figure 1 As shown, in some embodiments, the device further includes a loading mechanism 40 and a unloading mechanism 50. The loading mechanism 40 includes a loading conveying mechanism 41 and a loading transport mechanism 42. The loading conveying mechanism 41 is used for conveying incoming battery cells, and the loading transport mechanism 42 is connected between the loading station and the loading conveying mechanism 41 to transport the battery cells from the loading conveying mechanism 41 to the adsorption table 12. The unloading mechanism 50 includes an unloading conveying mechanism 51 and an unloading transport mechanism 52. The unloading conveying mechanism 51 is used for unloading battery cells, and the unloading transport mechanism 52 is connected between the unloading station and the unloading conveying mechanism 51 to transport the battery cells from the adsorption table 12 to the unloading conveying mechanism 51.
[0059] See Figure 1 As shown, in one specific configuration, both the loading conveyor 41 and the unloading conveyor 51 include two parallel belt conveyor lines. The two belt conveyor lines synchronously transport two solar cells to accommodate the inspection and processing of the two solar cells in this application. It is worth noting that in order to ensure that the two solar cells can be processed simultaneously and accurately, the two belt conveyor lines need to maintain a high degree of synchronization.
[0060] The loading and unloading conveying mechanism 42 and the unloading and unloading conveying mechanism 52 are rotary arm suction cup robotic arms. The loading and unloading conveying mechanism 42 is located between the end of the loading conveying mechanism 41 and the loading station, and includes a base and a rotary drive component mounted on the base. The rotary drive component drives the cantilever assembly to rotate, causing the suction cup on it to reciprocate between the end of the loading and unloading conveying mechanism and the loading station, thus simultaneously transporting two battery cells to the loading station. The unloading and unloading conveying mechanism 52 has the same structure as the loading and unloading conveying mechanism 42. It is located between the unloading station and the starting end of the unloading conveying mechanism 51, and includes a base and a rotary drive component mounted on the base. The rotary drive component drives the cantilever assembly to rotate, causing the suction cup on it to reciprocate between the unloading station and the starting end of the unloading conveying mechanism 51, thus simultaneously transporting two battery cells from the unloading station to the unloading conveying mechanism 51.
[0061] In a preferred embodiment, the adsorption platform 12 has four equally spaced sections around the turntable 11, rotating in 90-degree increments, sequentially passing through the loading station, inspection station, unloading station, and fourth station. The fourth station can be an empty station or a station performing other functions; only the corresponding functional components need to be configured at the fourth station. The loading and unloading stations are arranged on a straight line, and the loading conveyor mechanism 41 and the unloading conveyor mechanism 51 are also arranged on this straight line. In this case, both the loading and unloading conveyor mechanisms 42 and 52 are rotating arm robots that maintain the material direction, and they also include direction-maintaining components to keep the direction of the battery cells unchanged when handling two battery cells. Existing material direction control robots, such as CN 222410110 U, can be used. This arrangement saves equipment space, and the positioning mechanism can also be located at the loading station. Furthermore, the two battery cells are arranged side-by-side on the adsorption platform, facilitating the setup of the two pressing modules.
[0062] Furthermore, such as Figure 4 As shown, both the loading and unloading conveying mechanism 42 and the unloading conveying mechanism 52 include a base assembly, a cantilever assembly, a suction cup assembly, and a direction-maintaining assembly. The aim is to achieve the conveying and transfer of solar cells through the cooperation of these components. Specifically:
[0063] The base assembly includes a base 421 and a rotary drive 422 disposed on the base 421. The base 421 provides stable support, and the rotary drive 422 is used to drive the cantilever assembly to rotate. The rotary drive 422 can be a rotary motor, which can precisely control the rotation angle and speed of the cantilever assembly.
[0064] The cantilever assembly includes a cantilever 424, one end of which is connected to the rotation shaft 423 of the rotary drive 422 so that it can rotate horizontally about the rotation shaft 423 under the drive of the rotary drive 422, thereby enabling the suction cup assembly to reach any position within the working area.
[0065] The suction cup assembly includes a suction cup 425 and a connecting shaft 426 connected to the suction cup 425. The suction cup 425 uses the vacuum adsorption principle to firmly adhere to the battery cells and prevent them from falling off during transportation. The suction cup 425 is preferably a Bernoulli suction cup and has two adsorption stations to simultaneously adsorb or release two battery cells. The connecting shaft 426 is provided on the suction cup 425, passing through the other end of the cantilever 424. Therefore, when the other end of the cantilever 424 rotates relative to the rotating shaft 423, the suction cup 425 can move accordingly. Furthermore, the connecting shaft 426 is configured to rotate relative to the cantilever 424.
[0066] The orientation holding component, connected to the connecting shaft 426 and the base 421, is designed to lock the orientation of the suction cup 425 based on its position limitation when the cantilever 424 drives the suction cup 425 to move, ensuring that the battery cell always maintains the correct posture during the transportation process. When it reaches the loading station, the suction cup 425 releases the battery cell onto the adsorption table at the loading station, completing the transportation and transfer task.
[0067] The direction-maintaining assembly includes a first synchronous pulley 427, a second synchronous pulley 428, and a synchronous belt 429 connecting the first synchronous pulley 427 and the second synchronous pulley 428. The first synchronous pulley 427 is fixedly connected to the base 421 and is coaxially arranged with the rotating shaft 423. The second synchronous pulley 428 has the same dimensional parameters as the first synchronous pulley 427 and is coaxially connected with the connecting shaft 426 of the suction cup 425.
[0068] The first synchronous pulley 427 is fixedly connected to the base 421 via a connecting block 430, thus preventing it from rotating. The second synchronous pulley 428 is coaxially connected to the connecting shaft 426, and rotates coaxially with the connecting shaft 426. Understandably, when the cantilever 424 drives the suction cup 425 to move, the meshing teeth between the first synchronous pulley 427 and the synchronous belt 429 change, causing the synchronous belt 429 to drive the second synchronous pulley 428 to rotate. This, in turn, drives the suction cup 425 to rotate via the connecting shaft 426. The direction of rotation of the suction cup 425 is opposite to that of the rotating shaft 423, but the rotation angle is the same. Therefore, during the rotation of the cantilever 424 driven by the rotary drive 422, the orientation of the battery cells on the suction cup 425 remains unchanged, which helps maintain stability during battery cell loading or unloading and ensures positional accuracy.
[0069] Furthermore, a waste recycling box 53 is provided on one side of the unloading conveyor mechanism 51. The waste recycling box 53 is located on the moving path of the unloading conveyor mechanism 52 and can be used to collect and process defective or discarded battery cells. In addition, when a battery cell is found to be defective and needs to be discarded, if both battery cells need to be discarded, after the unloading conveyor mechanism 52 absorbs the battery cells, both battery cells can be directly transferred and discarded into the waste recycling box 53. However, if only one of the two battery cells needs to be discarded, the unloading conveyor mechanism 52 first moves the defective battery cell above the unloading conveyor mechanism 51, places the normal battery cell on the conveyor line, and then further transfers and discards the defective battery cell into the waste recycling box 53.
[0070] In summary, the detection process of the dual-half-cell back-contact solar cell IV detection device 100 provided in this application is as follows: two conveyor lines in the feeding conveyor mechanism 41 simultaneously transport two solar cells, which are then transported to the adsorption table 12 at the feeding station by the feeding and handling mechanism 42. At this time, the positioning mechanism 30 below takes pictures of the solar cells on the adsorption table 12 to record the position information of the solar cells. Then, the adsorption table 12 drives the solar cells to rotate and transfer to the detection station, where the detection mechanism 20 begins to detect the solar cells on the adsorption table 12. Two solar cells are simultaneously inspected. The inspection mechanism 20 includes an upper pressing assembly 22 and a lower pressing assembly 23. Two correction platforms 232 in the lower pressing assembly 23 adjust their positions based on the corresponding solar cell's location information, ensuring the probes on the probe plate 233 are precisely aligned with the inspection points on the back of the solar cell, thus guaranteeing inspection accuracy. After inspection, the adsorption table 12 rotates the solar cells to the unloading station, where the unloading and conveying mechanism 52 transports the two solar cells to the two conveyor lines of the unloading conveyor mechanism 51 for unloading. This achieves the effect of improving the inspection efficiency of the solar cells while ensuring inspection accuracy.
[0071] The above description is only a part or preferred embodiment of this application. Neither the text nor the drawings should limit the scope of protection of this application. All equivalent structural transformations made using the content of this application's specification and drawings under the overall concept of this application, or direct / indirect applications in other related technical fields, are included within the scope of protection of this application.
Claims
1. A dual-half-cell back-contact battery cell IV detection device, characterized in that, include: The testing mechanism, set at the testing station, includes a simulated light source, a mounting base, and an upper pressing assembly and a lower pressing assembly slidably mounted on the mounting base. The upper pressing assembly includes a lower transparent plate. The simulated light source is positioned above the upper pressing assembly to provide simulated sunlight to the solar cells through the lower transparent plate. The lower pressing assembly includes two side-by-side correction platforms and probe plates mounted on each correction platform. The probe contacts of each probe on the probe plate are facing upwards. The correction platforms are used to adjust the position based on the position information of their respective solar cells, so that each probe on the probe plate is aligned with the corresponding testing point on the solar cell. A turntable mechanism includes a turntable and at least one adsorption platform disposed around the turntable. The adsorption platform is used to simultaneously adsorb two battery cells. The turntable drives the adsorption platform to rotate around it and passes through a detection station on the rotation path of the adsorption platform. The upper pressing assembly is used to press down on the battery cell, so that the lower pressing transparent plate abuts against the front of the battery cell, and the lower pressing assembly is used to press up on the battery cell so that the probe on the probe plate contacts the detection point on the battery cell.
2. The dual-half-cell back-contact battery cell IV detection device according to claim 1, characterized in that, The mounting base includes a first mounting base and a second mounting base that are disposed opposite to each other. The pressure transparent plate is fixed to the first fixed plate, and the two correction platforms are disposed on the second fixed plate. The first fixed plate and the second fixed plate are slidably disposed between the first mounting base and the second mounting base. Both the first mounting base and the second mounting base are provided with guide structures, and both ends of the first fixing plate and both ends of the second fixing plate are respectively connected to the first mounting base and the second mounting base through the guide structures.
3. The dual-half-cell back-contact battery cell IV detection device according to claim 2, characterized in that, The guide structure is a linear guide rail arranged in the vertical direction; both ends of the first fixing plate and both ends of the second fixing plate are connected to support plates, and the support plates at both ends are mirror images of each other. Each support plate includes a first plate and a second plate that are perpendicular to each other. The second plate in the support plates at both ends is used to connect to the linear guide rail respectively, and the first plate in the support plates at both ends is used to jointly support and fix the corresponding fixing plate.
4. The dual-half-cell back-contact battery cell IV detection device according to claim 1, characterized in that, It also includes a positioning mechanism, which comprises: Multiple positioning cameras are used to photograph the battery cells transferred to the adsorption platform to record the position information of the battery cells; Multiple light sources for photography, each corresponding to one of the aforementioned positioning cameras, are used to provide uniform, non-reflective illumination; The positioning mechanism is located before the testing station.
5. The dual-half-cell back-contact battery cell IV detection device according to claim 4, characterized in that, The positioning mechanism also includes a protective component, which includes a protective box and a transparent baffle. The top of the protective box is open, and multiple positioning cameras and multiple photo-taking light sources are disposed inside the protective box. The transparent baffle is disposed between the protective box and the adsorption platform above it.
6. The dual-half-cell back-contact battery cell IV detection device according to claim 4, characterized in that, Also includes: The adsorption platform has a loading station, a testing station and a unloading station arranged sequentially along its rotation path. The dual half-cell back contact battery cell IV testing device also includes a loading mechanism and an unloading mechanism. The feeding mechanism includes a feeding conveyor mechanism and a feeding transport mechanism. The feeding conveyor mechanism includes two parallel belt conveyor lines that synchronously transport two battery cells. The feeding conveyor mechanism is used for the incoming transport of battery cells. The feeding transport mechanism is connected between the end of the feeding conveyor mechanism and the feeding station. The feeding transport mechanism is a rotating suction cup robot arm used to transport and transfer the battery cells from the feeding conveyor mechanism to the suction table. The unloading mechanism includes an unloading conveying mechanism and an unloading transport mechanism. The unloading conveying mechanism includes two parallel belt conveyor lines that synchronously transport two battery cells. The unloading conveying mechanism is used for unloading and transporting the battery cells. The unloading transport mechanism is connected between the unloading station and the starting end of the unloading conveying mechanism. The unloading transport mechanism is a rotating suction cup robot arm used to transport and transfer the battery cells from the suction table to the unloading conveying mechanism.
7. The dual-half-cell back-contact battery cell IV detection device according to claim 6, characterized in that, The turntable mechanism includes a turntable and four adsorption platforms arranged around the turntable. The rotation path of the adsorption platforms is provided with a loading station, an inspection station, an unloading station and a fourth station in sequence. The loading station, the unloading station, the loading conveyor mechanism, and the unloading conveyor mechanism are on the same straight line, and the loading and unloading conveyor mechanisms are rotating suction cup manipulators that maintain the material direction.
8. The dual-half-cell back-contact battery cell IV detection device according to claim 7, characterized in that, Both the loading and unloading conveying mechanism and the unloading conveying mechanism include: A base assembly, including a base and a rotation drive member disposed on the base; A cantilever assembly includes a cantilever, one end of which is connected to the rotation axis of the rotary drive member to rotate horizontally about the rotation axis under the drive of the rotary drive member. A suction cup assembly includes a suction cup and a connecting shaft connected to the suction cup. The connecting shaft passes through the other end of the cantilever and is rotatably disposed relative to the cantilever. A direction-keeping component, connected to the connecting shaft and the base, is used to lock the direction of the suction cup.
9. The dual-half-cell back-contact battery cell IV detection device according to claim 8, characterized in that, The direction-keeping assembly includes a first synchronous pulley, a second synchronous pulley, and a synchronous belt connecting the first synchronous pulley and the second synchronous pulley; the first synchronous pulley is fixedly connected to the base and is coaxially arranged with the rotation shaft; the second synchronous pulley has the same dimensional parameters as the first synchronous pulley, and the second synchronous pulley is coaxially connected to the connecting shaft passing through the cantilever.
10. The dual-half-cell back-contact battery cell IV detection device according to claim 6, characterized in that, The unloading mechanism further includes a waste recycling box disposed on one side of the unloading conveying mechanism, the waste recycling box being located on the moving path of the unloading and handling mechanism; and / or, The correction platform is the XYR platform.