Double-half battery piece IV detection device

Abstract

The utility model discloses an IV detection device for double half battery pieces. The device comprises a rotary table mechanism and a detection mechanism, wherein the rotary table mechanism is used for bearing two battery pieces to be conveyed to the detection mechanism or transferred out of the detection mechanism; the detection mechanism comprises a simulation light source and two pressing modules which are oppositely and independently arranged, each pressing module comprises a deviation correction platform, a probe support arranged on the deviation correction platform, a first probe row group and a second probe row group, the first probe row group and the second probe row group are arranged on the probe support in a spaced mode, and the deviation correction platform is used for conducting position adjustment based on position information of a battery piece; the probe support is used for driving the first probe row group and the second probe row group to make contact with the detection points on the front face and the back face of the battery piece from the front face and the back face of the battery piece, and the simulation light source is used for providing simulation sunlight for the front face and the back face of the battery piece. According to the technical scheme, the IV detection efficiency of the battery pieces can be improved, and the detection precision of the two battery pieces can be ensured.

Description

Technical Field

[0001] This application relates to the field of solar cell manufacturing technology, and in particular to a dual half-cell IV testing device. 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 IV testing device, which aims to solve the problem of improving testing efficiency and ensuring testing accuracy in the existing technology of cell IV testing.

[0005] To achieve the above objectives, this application proposes a dual half-cell solar cell IV testing device, which includes:

[0006] The testing mechanism, set at the testing station, includes a simulated light source and two opposing and independently arranged pressing modules. Each pressing module includes a correction platform, a probe bracket set on the correction platform, and a first probe array and a second probe array set vertically spaced on the probe bracket. The contacts of the first probe array and the second probe array are vertically facing each other. The correction platform is used to adjust the position based on the position information of the solar cell, so that the first probe array and the second probe array are aligned with the detection points on the front and back of the solar cell, respectively. The probe bracket is used to drive the first probe array and the second probe array to move vertically towards each other, contacting the detection points on the front and back of the solar cell. The simulated light source is used to provide simulated sunlight to the front and / or back of the solar cell.

[0007] The 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 two battery cells are respectively located between the first probe row group and the second probe row group of the two pressing modules.

[0008] In some embodiments, the probe holder includes:

[0009] A mounting base and a first and second transverse mounting plates slidably disposed on the mounting base in the vertical direction. The bottom end of the mounting base is connected to the correction platform. The first probe array is mounted on the first transverse mounting plate, and the second probe array is mounted on the second transverse mounting plate. Each of the first and second probe arrays includes multiple probe arrays arranged in parallel.

[0010] In some embodiments, the first transverse mounting plates correspondingly arranged on the two pressing modules are staggered vertically and slide synchronously in the vertical direction while maintaining the gap between them; the second transverse mounting plates correspondingly arranged on the two pressing modules are staggered vertically and slide synchronously in the vertical direction while maintaining the gap between them.

[0011] The contacts of the first probe arrays correspondingly arranged on the two pressing modules are kept coplanar in the horizontal direction, and the contacts of the second probe arrays correspondingly arranged on the two pressing modules are kept coplanar in the horizontal direction.

[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 on 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 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 of the feeding station.

[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 of the unloading station 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 passes through the other end of the cantilever and is 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 UVW platform.

[0031] This application proposes a dual-half-cell IV testing device. The device includes a turntable mechanism and a testing mechanism. The testing mechanism includes a simulated light source and two sets of opposing and independently arranged pressing modules. After the turntable mechanism synchronously transports two solar cells to the two pressing modules, the two independent pressing modules press the solar cells together. Furthermore, under simulated sunlight provided by the simulated light source, the two solar cells undergo simultaneous IV testing to improve testing efficiency. Each pressing module includes a correction platform, a probe holder mounted on the correction platform, and a first probe array and a second probe array spaced vertically on the probe holder. The correction platform adjusts the position based on the position information of the corresponding solar cell, aligning the first and second probe arrays with the detection points on the front and back sides of the solar cell, respectively. Driven by the probe holder, the first and second probe arrays contact the detection points on the corresponding solar cell from the front and back sides, ensuring precise alignment of the probes on the probe arrays with the solar cell and guaranteeing 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 battery IV testing 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. Figure 1 ;

[0035] Figure 3This is a schematic diagram of the structure of a testing mechanism according to an embodiment of this application. Figure 2 ;

[0036] Figure 4 This 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 Figures 1-3 As shown, this application proposes a dual-half-cell IV testing device 100. The device includes a turntable mechanism 10 and a testing mechanism 20. The turntable mechanism 10 is used to carry two cells and move them to different stations, so as to realize IV testing of the two cells on it in further cooperation with the testing mechanism 20 at the testing station.

[0042] The detection mechanism 20 includes a simulated light source (not shown in the attached figure) and two opposing and independently arranged pressing modules 21. Each pressing module 21 includes a correction platform 22, a probe bracket 23 disposed on the correction platform 22, and a first probe array 24 and a second probe array 25 disposed vertically on the probe bracket 23. The contacts of the first probe array 24 and the second probe array 25 are arranged vertically facing each other. The correction platform 22 is used to adjust the position based on the position information of the corresponding solar cell, so that the first probe array 24 and the second probe array 25 are aligned with the detection points on the front and back of the solar cell, respectively. The probe bracket 23 is used to drive the first probe array 24 and the second probe array 25 to contact the detection points on the front and back of the solar cell, respectively. The simulated light source is used to provide simulated sunlight to the front and / or back of the solar cell.

[0043] The first probe array group 24 and the second probe array group 25 typically include multiple probe arrays arranged in parallel. Each probe array has multiple probes spaced apart for contacting the detection point. The aforementioned probe array group contacting the detection point refers to the probe contact head contacting the detection point, also known as the contact point.

[0044] 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 in steps, synchronously transporting two solar cells between the first probe array 24 and the second probe array 25 in the two pressing modules 21. Then, the correction platform 22 in each pressing module 21 performs position fine-tuning according to the pre-known position information of the corresponding solar cells, ensuring that the first probe array 24 and the second probe array 25 are precisely aligned with the detection points on the front and back of the solar cells. Subsequently, the probe bracket 23 drives the first probe array 24 and the second probe array 25 to move up and down towards each other, respectively contacting the detection points on the front and back of the solar cells. Simulated sunlight is provided to the front and back of the solar cells by a simulated light source to simulate actual lighting conditions. Through the first probe array 24 and the second probe array 25, the detection device measures the current and voltage of the solar cells in real time and records the IV characteristics. After the detection is completed, the first probe array 24 and the second probe array 25 are reset, and the turntable mechanism 10 transfers the two solar cells out of the detection station.

[0045] 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 of the solar cells. Furthermore, after the turntable mechanism 10 transports the two solar cells to the pressing module 21, the correction platform 22 in each pressing module 21 can adjust its position based on the position information of the corresponding solar cell, ultimately ensuring that the first probe array 24 and the second probe array 25 are precisely aligned with the testing points on the solar cell, thus ensuring the testing accuracy of each solar cell. Compared to correction before the testing station, the correction accuracy is higher and saves time.

[0046] Among them, the correction platform 22 adopts the UVW correction platform, which includes three independent drive axes: U-axis, V-axis and W-axis. Based on its high precision characteristics, it can drive the probe array set on it to make small and precise adjustments according to the actual position information of the solar cell, so that the probe array is precisely aligned with the detection point on the solar cell, which is the contact grid line on the solar cell.

[0047] The number of simulated light sources can be set to two as needed. The two simulated light sources are respectively positioned above the first probe array 24 and below the second probe array 25 to provide simulated sunlight to the front and back of the solar cell. This design is suitable for the inspection of bifacial solar cells, that is, based on the contact probes set on both sides of the solar cell and the corresponding simulated sunlight, the photoelectric conversion efficiency of the front and back of the solar cell can be detected respectively.

[0048] See Figure 2 and Figure 3 As shown, in some embodiments, the probe holder 23 includes a vertically arranged mounting base 231 and a first horizontal mounting plate 232 and a second horizontal mounting plate 233 slidably disposed on the mounting base 231 in the vertical direction. The bottom end of the mounting base 231 is connected to the correction platform 22. Both the first horizontal mounting plate 232 and the second horizontal mounting plate 233 have a hollowed-out area in their middle portions. The first probe array 24 is mounted on the hollowed-out area of ​​the first horizontal mounting plate 232, and the second probe array 25 is mounted on the hollowed-out area of ​​the second horizontal mounting plate 233. Taking the first horizontal mounting plate 232 being positioned above the second horizontal mounting plate 233 as an example, the probes on the first probe array 24 are positioned downwards, and the probes on the second probe array 25 are positioned upwards, respectively contacting the front and back sides of the battery cell.

[0049] In this embodiment, based on the above-mentioned probe bracket 23 and probe array mounting design on the probe bracket 23, the two probe arrays can adjust their height vertically according to the corresponding horizontal mounting plate based on actual usage requirements. In practical applications, the actions include: driving the first probe array 24 and the second probe array 25 to move towards each other to complete the contact between the probe arrays and the battery cell detection points; or driving the first probe array 24 and the second probe array 25 to move away from each other to achieve a reset action of the probe arrays, thereby releasing the pressed battery cell.

[0050] Understandably, corresponding to the first and second transverse mounting plates 232 and 233, driving components, such as linear drive motors, are provided within the mounting base 231 to drive the first and second transverse mounting plates 232 and 233 to move vertically. To ensure the stability of the first and second transverse mounting plates 232 and 233 during movement, the mounting base 231 is provided with a guide structure 26, such as a linear guide rail, in the vertical direction. Preferably, two linear guide rails are arranged side by side, and the first and second transverse mounting plates 232 and 233 are connected to the linear guide rails and move along the linear guide rails under the drive of the driving components.

[0051] As mentioned above, in order to achieve synchronous testing of two battery cells, this application provides two opposing and independently configured pressing modules 21. The two pressing modules 21 have identical structures, with their corresponding first probe array 24 and second probe array 25 facing each other. Furthermore, the two first horizontal mounting plates 232 and the two second horizontal mounting plates 233 in the two pressing modules 21 are arranged vertically in a staggered manner, maintaining a gap that slides synchronously in the vertical direction; the lower ends of the two first probe arrays 24 remain coplanar in the horizontal direction, and the upper ends of the two second probe arrays 25 remain coplanar in the horizontal direction.

[0052] This arrangement between the transverse mounting plates in the two pressing modules 21 optimizes space utilization and avoids direct interference between them. Furthermore, it prevents movement interference between the transverse mounting plates when the alignment platform 22 makes minor adjustments in the horizontal direction. This arrangement is suitable for situations where the center distance between the two battery cells is relatively short. It is worth noting that when the transverse mounting plates are arranged in a staggered vertical configuration, it is also necessary to ensure that the distance between the two first transverse mounting plates 232 and the two second transverse mounting plates 233 remains synchronized in the vertical direction. This guarantees that the two probe arrays in the two pressing modules 21 will not interfere with each other as they approach or move away from the battery cells, ensuring the normal operation of the probe arrays in the vertical direction.

[0053] In this design, the lower ends of the two first probe arrays 24 are coplanar in the horizontal direction, and the upper ends of the two second probe arrays 25 are coplanar in the horizontal direction. Specifically, the contacts of the two first probe arrays 24 and the two second probe arrays 25 are coplanar in the horizontal direction. Therefore, during the driving process of the probe arrays, the two first probe arrays 24 can simultaneously contact the front detection points of the two battery cells, and the two second probe arrays 25 can simultaneously contact the back detection points of the two battery cells. This ensures that the two pressing modules 21 can synchronously press the two battery cells, ensuring the synchronization of the detection of the two battery cells, reducing time, and improving efficiency. (See also...) Figure 2 and Figure 3The lower ends of the two first probe groups 24 can be kept coplanar in the horizontal direction when the two first horizontal mounting plates 232 are staggered vertically by setting the length of the probes of the two first probe groups 24; the same applies to the two second probe groups 25.

[0054] See Figure 1 As 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 the two battery cells to the detection station so that the two pressing modules 21 respectively press one battery cell. See also Figures 1 to 3 The pressing modules 21 are arranged facing each other, which means that the mounting bases 231 of the two pressing modules 21 are set away from each other, and the first probe group 24 and the second probe group 25 of the two pressing modules 21 are set close to each other, so that the two battery cells side by side on the adsorption platform 12 can be pressed and tested at the same time.

[0055] 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 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 two pressing modules 21 in the testing mechanism 20 to press one battery cell onto it for testing when the adsorption table 12 transfers two battery cells to the testing station. The unloading station is used to transfer the tested battery cells to this location for further processing.

[0056] 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.

[0057] The adsorption platform 12 has a hollowed-out clearance hole to allow the second probe array 25 to pass through the adsorption platform 12 and contact the detection point on the back of the battery cell during the detection process; and 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.

[0058] 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. In other stations, the positioning mechanism 30 can also be disposed above the station.

[0059] Multiple positioning cameras 31 are used to photograph the battery cells on the adsorption table 12 at the loading station. When the battery cells are placed on the adsorption table 12, the positioning mechanism 30 starts working to record the position information of the battery cells, thereby providing reference data for the adjustment of the correction module in the subsequent detection mechanism 20. Multiple light sources correspond one-to-one with each positioning camera to provide uniform and non-reflective illumination.

[0060] Furthermore, the positioning mechanism 30 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.

[0061] 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.

[0062] 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 conveying mechanism 41 and the loading station to transport the battery cells from the loading conveying mechanism 41 to the adsorption table 12 of the loading station. 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 of the unloading station to the unloading conveying mechanism 51.

[0063] See Figure 1As 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.

[0064] Both the loading and unloading conveying mechanism 42 and the unloading conveying mechanism 52 are rotary arm suction cup robots. 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 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.

[0065] 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.

[0066] 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:

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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 to complete the transportation and transfer task.

[0071] 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.

[0072] 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.

[0073] 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.

[0074] In summary, the detection process of the dual half-cell battery cell IV detection device 100 provided in this application is as follows: two conveyor lines in the feeding conveyor mechanism 41 simultaneously transport two battery 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 battery cells on the adsorption table 12 to record the position information of the battery cells; then the adsorption table 12 drives the battery cells to rotate and transfer to the detection station, where the detection mechanism 20 begins to synchronously detect the two battery cells on the adsorption table 12. The inspection process involves two battery cells, each equipped with a pressing module 21. The correction platform 22 within the pressing module 21 adjusts its position based on the cell's location information, ensuring the probe array precisely aligns with the inspection points on the cell and guaranteeing inspection accuracy. After inspection, the adsorption table 12 rotates the battery cells to the unloading station, where the unloading and conveying mechanism 52 transports the two cells to the two conveyor lines of the unloading conveyor mechanism 51 for unloading. This process aims to improve the efficiency of battery cell inspection while maintaining inspection accuracy.

[0075] It should be noted that the first probe array 24 and the second probe array 25 can be selected to contact the front or back of the battery cell as needed.

[0076] 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 IV detection device, characterized in that, include: The testing mechanism, set at the testing station, includes a simulated light source and two opposing and independently arranged pressing modules. Each pressing module includes a correction platform, a probe bracket set on the correction platform, and a first probe array and a second probe array set vertically spaced on the probe bracket. The contacts of the first probe array and the second probe array are vertically facing each other. The correction platform is used to adjust the position based on the position information of the solar cell, so that the first probe array and the second probe array are aligned with the detection points on the front and back of the solar cell, respectively. The probe bracket is used to drive the first probe array and the second probe array to move vertically towards each other, contacting the detection points on the front and back of the solar cell. The simulated light source is used to provide simulated sunlight to the front and / or back of the solar cell. The 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 two battery cells are respectively located between the first probe row group and the second probe row group of the two pressing modules.

2. The dual half-cell IV detection device according to claim 1, characterized in that, The probe holder includes: A mounting base and a first and second transverse mounting plates slidably disposed on the mounting base in the vertical direction. The bottom end of the mounting base is connected to the correction platform. The first probe array is mounted on the first transverse mounting plate, and the second probe array is mounted on the second transverse mounting plate. Each of the first and second probe arrays includes multiple probe arrays arranged in parallel.

3. The dual half-cell IV detection device according to claim 2, characterized in that, The first horizontal mounting plates corresponding to the two pressing modules are arranged vertically and staggered, and slide synchronously in the vertical direction while maintaining the gap between them; the second horizontal mounting plates corresponding to the two pressing modules are arranged vertically and staggered, and slide synchronously in the vertical direction while maintaining the gap between them. The contacts of the first probe arrays correspondingly arranged on the two pressing modules are kept coplanar in the horizontal direction, and the contacts of the second probe arrays correspondingly arranged on the two pressing modules are kept coplanar in the horizontal direction.

4. The dual half-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 on 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 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 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 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 of the feeding station. 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 of the unloading station to the unloading conveying mechanism.

7. The dual half-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 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 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 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 UVW platform.

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