Detection device, detection system, and manufacturing system

Abstract

The utility model provides a detection device, a detection system and a manufacturing system. The detection device comprises a supporting assembly, a plurality of adsorption assemblies, a controller, a detection light beam emitter, a detection light beam receiver and a processor, wherein the supporting assembly comprises four frames and a hollow part; the plurality of adsorption assemblies are distributed in the circumferential direction of the hollow part and are used for adsorbing the photovoltaic battery piece to be detected; the controller is used for sending out detection starting and ending instructions; the detection light beam emitter is used for emitting a detection light beam parallel to the to-be-detected surface of the to-be-detected photovoltaic cell; the detection beam receiver is used for receiving the detection beam; the processor generates a detection result. Therefore, the detection device timely and effectively meets the functional requirement of foreign matter detection on the to-be-detected battery piece in the preparation process, so that the defect of the to-be-detected battery piece can be timely found, the production yield of the battery piece is ensured, and possible production material loss is avoided.

Description

Technical Field

[0001] The utility model relates to the field of detection technology, in particular to a detection device, a detection system and a manufacturing system. Background Art

[0002] The preparation process of photovoltaic cells usually includes: texturing, coating, grid line preparation and other processes. Among them, grid line preparation requires coating the surface of the cell after coating (usually expensive silver paste), and then sintering and curing the conductive paste to form grid lines.

[0003] Due to the limitations of the current preparation process, some foreign matter (such as impurities, dirt, and particle crystals) will inevitably adhere to the surface of the cell after coating. Preparing grid lines based on cells with foreign matter attached to the surface can easily lead to uneven coating of the conductive paste, which in turn leads to serious defects such as broken grids, seriously reducing the current collection efficiency of photovoltaic cells.

[0004] However, the related art lacks relevant equipment for detecting foreign objects in photovoltaic cells during the preparation process (for example, between the coating process and the grid line preparation process), and often relies on manual inspection or back-end process inspection (for example, after the grid line preparation process). This not only fails to ensure the accuracy of the inspection, but also is not conducive to timely discovery of process defects, resulting in loss of production materials including silver paste.

[0005] How to provide a detection device that can timely detect foreign matter on the surface of photovoltaic cells during the preparation process has positive significance for ensuring the manufacturing yield of photovoltaic cells and avoiding production material losses during the manufacturing process. Utility Model Content

[0006] The purpose of the present invention is to provide a detection device, a detection system and a manufacturing system to solve the technical problems in the above-mentioned related technologies.

[0007] On the one hand, the utility model provides a detection device for detecting foreign matter on the surface of a photovoltaic cell to be tested after the coating process is completed, comprising: a support component, a plurality of adsorption components, a controller, a detection beam transmitter, a detection beam receiver and a processor; wherein,

[0008] The support assembly includes: a first frame and a second frame spaced apart and parallel to a first direction, and a third frame and a fourth frame spaced apart and parallel to the second direction; the first direction is perpendicular to the second direction; the first frame, the second frame, the third frame, and the fourth frame surround a hollow portion;

[0009] A plurality of adsorption components are distributed circumferentially along the hollow portion of the support component; the adsorption components are configured to: adsorb the photovoltaic cell to be tested so that the photovoltaic cell to be tested is suspended in the hollow portion and the surface to be tested is parallel to the plane determined by the first direction and the second direction;

[0010] The controller is arranged at a first preset position of the detection device; the processor is configured to: give a start instruction for detecting foreign objects in the photovoltaic cell to be tested and an end instruction for ending the foreign object detection in the photovoltaic cell to be tested;

[0011] A detection beam emitter is provided on the first frame; the detection beam emitter is configured to: emit a detection beam parallel to the surface to be tested of the photovoltaic cell to be tested along the second direction in response to a start instruction; the light intensity of the detection beam when emitted is the emission light intensity value;

[0012] A detection beam receiver is provided on the second frame; the detection beam receiver is configured to: receive the detection beam and obtain a received light intensity value thereof;

[0013] The processor is arranged at a second preset position of the detection device; the processor is configured to: generate a detection result based on the ratio of the received light intensity value to the emitted light intensity value, including: generating an unqualified detection result when the ratio of the received light intensity value to the emitted light intensity value is in a first preset interval; generating a qualified detection result when the ratio of the received light intensity value to the emitted light intensity value is in a second preset interval.

[0014] The purpose of this application and the solution of its technical problems can be further achieved by adopting the following technical measures.

[0015] Optionally, the interval between the detection light beam and the surface to be measured is 10 μm to 100 μm.

[0016] Optionally, the first preset interval includes: 0 to 0.6; the second preset interval includes: greater than 0.6.

[0017] Optionally, the detection beam emitter is configured to: emit N detection beams (N≥2) in sequence to scan the surface to be tested of the photovoltaic cell to be tested; each detection beam is arranged in parallel along a first direction; correspondingly, the detection beam receiver is configured to: receive each detection beam in sequence and obtain the corresponding received light intensity value.

[0018] Optionally, the detection device further comprises: a purge component, which is arranged at a third preset position of the detection device; the purge component is configured to: in response to a start instruction, purge the surface to be tested of the battery cell to be tested suspended in the hollow portion.

[0019] Optionally, the detection device further includes: a dust suction component, which is arranged at a fourth preset position of the detection device; the dust suction component is configured to collect foreign particles blown by the blowing component and attached to the surface of the photovoltaic cell to be tested.

[0020] Optionally, the detection beam emitter includes: an infrared light emitter, an ultraviolet light emitter or a laser emitter;

[0021] Correspondingly, the detection light beam receiver includes: a photodiode sensor, a photoresistor sensor or a light flux sensor.

[0022] Optionally, the controller is further configured to generate corresponding control instructions according to the detection results, and the detection device further includes: a first conveying component, a second conveying component, a third conveying component and a transfer component; wherein,

[0023] The first conveying assembly is movably disposed in the hollow portion; the first conveying assembly is configured to: in response to a start instruction, receive the battery cell to be tested from the first production station and convey it to the adsorption assembly;

[0024] The second conveying assembly is disposed between the support assembly and the second production station; the second conveying assembly is configured to: receive the battery cell to be tested from the support assembly and convey it to the second production station;

[0025] The third conveying assembly is disposed between the support assembly and the rework station; the second conveying assembly is configured to: receive the battery cell to be tested from the support assembly and convey it to the rework station;

[0026] The transfer component is movably arranged above the support component; the transfer component is configured to: in response to a control instruction from the controller, transfer the photovoltaic cell to be tested that has passed the inspection to the second conveying component; or transfer the photovoltaic cell to be tested that has failed the inspection to the third conveying component.

[0027] Optionally, the first conveying assembly includes: a conveying component and a telescopic component; the conveying component is configured to: move back and forth through the hollow portion along a third direction under the drive of the telescopic component; the third direction is perpendicular to the first direction and the second direction.

[0028] In another aspect, the present invention provides a detection system for use in the field of detection using the detection devices provided in some of the aforementioned embodiments. The detection system includes a photovoltaic cell to be detected having a first surface to be detected and a second surface to be detected that are disposed opposite to each other. The detection system includes:

[0029] Two detection devices as provided in some of the aforementioned embodiments; and a flipping device arranged between the two detection devices; wherein the two detection devices are used to perform foreign object detection on the first surface to be tested and the second surface to be tested respectively; the flipping device is used to flip the photovoltaic cell to be tested.

[0030] On the other hand, the present invention provides a manufacturing system for the application of the detection system provided in some of the aforementioned embodiments in the manufacturing field. The manufacturing system includes: a first production station, a detection system as provided in some of the aforementioned embodiments, a second production station, and a rework station; wherein the first production station is used to perform a first type of production process on a photovoltaic cell to be tested; the detection system is connected to the first production station; the detection system is used to perform foreign matter detection on a surface to be tested of the photovoltaic cell to be tested; the second production station is connected to the detection system; the second production station is used to receive the photovoltaic cell to be tested from the detection system and perform a second type of production process on it; the rework station is connected to the detection system; the rework station is used to receive the photovoltaic cell to be tested from the detection system and perform a rework process on it.

[0031] By means of the above technical solutions, the detection device, detection system, and manufacturing system provided by this application have at least the following advantages:

[0032] 1. The detection device provided in the embodiment of the present application is based on a support assembly structure formed by four frame encirclements, wherein an adsorption assembly is provided to suspend the photovoltaic cell to be tested in the hollow portion and maintain its surface to be tested in a preset position; a controller is provided to control the start and end of foreign object detection, and a detection beam emitter and a detection beam receiver are arranged relative to each other, wherein the detection beam emitter responds to a start command and emits a detection beam parallel to the surface to be tested of the photovoltaic cell to be tested; the detection beam receiver receives the detection beam and obtains its received light intensity value; and the processor performs a logical judgment based on the received light intensity value and the emitted light intensity value (for example, when the ratio of the received light intensity value to the emitted light intensity value is within a first preset range, an unqualified detection result is generated; when the ratio of the received light intensity value to the emitted light intensity value is within a second preset range, a qualified detection result is generated), thereby timely and effectively realizing the functional requirement of performing foreign object detection on the cell to be tested during the preparation process, so as to facilitate timely discovery of defects in the cell to be tested and prevent them from continuing to flow into subsequent production processes (such as the grid line preparation process), ensuring the production yield of the cell, and avoiding possible production material loss.

[0033] 2. In addition to realizing the technical advantages that can be obtained by the aforementioned detection device, the detection system provided in the embodiment of the present application can also realize foreign matter detection on the first surface to be tested and the second surface to be tested relative to the battery cell to be tested, further broadening the application scope of the aforementioned detection device and improving the detection efficiency.

[0034] 3. The manufacturing system provided in the embodiment of the present application, in addition to realizing the technical advantages that can be obtained by the aforementioned detection system, can also realize the convenient linkage between the manufacturing system and the detection system in the related technology, so as to facilitate the timely and accurate diversion of the battery cells to be tested (transfer to the second production station or rework station) based on the detection results of the battery cells to be tested, thereby effectively improving the manufacturing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in related technologies, the following briefly introduces the drawings required for use in the specific implementation methods or related technical descriptions. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0036] Figure 1 This is a schematic structural diagram of a detection device provided in some embodiments of the present application;

[0037] Figure 2 This is a schematic structural diagram of another detection device provided in some embodiments of the present application;

[0038] Figure 3 This is a schematic diagram of the composition of a detection device provided in some embodiments of the present application;

[0039] Figure 4 A schematic diagram of the composition of a detection system provided in some embodiments of the present application;

[0040] Figure 5 This is a schematic diagram of the composition of a manufacturing system provided in some embodiments of the present application.

[0041] Reference numerals:

[0042] 00-Detection system; 01-First production station; 02-Second production station; 03-Rework station;

[0043] 10 - Detection device; 11 - Support assembly; 12 - Adsorption assembly; 13 - Detection beam transmitter; 14 - Detection beam receiver; 15 - Processor; 16 - Purge assembly; 17 - Dust collection assembly; 18 - Image collector; 19 - Controller; 20 - First conveying assembly; 21 - Second conveying assembly; 22 - Third conveying assembly; 23 - Transfer assembly; 30 - Turning device;

[0044] 111 - first frame; 112 - second frame; 113 - third frame; 114 - fourth frame; 115 - hollow portion; 201 - conveying component; 202 - telescopic component. DETAILED DESCRIPTION

[0045] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0046] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0047] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0048] Example 1

[0049] like Figure 1 - Figure 3 As shown, the detection device 10 proposed in the embodiment of the present invention includes: a support component 11, multiple adsorption components 12, a controller 19, a detection beam emitter 13, a detection beam receiver 14 and a processor 15; wherein,

[0050] The support assembly 11 includes: a first frame 111 and a second frame 112 spaced apart and parallel to a first direction; and a third frame 113 and a fourth frame 114 spaced apart and parallel to the second direction; the first direction is perpendicular to the second direction; the first frame 111, the second frame 112, the third frame 113, and the fourth frame 114 surround a hollow portion 115;

[0051] A plurality of adsorption components 12 are distributed circumferentially along the hollow portion 115 of the support component 11; the adsorption components 12 are configured to: adsorb the photovoltaic cell to be tested so that the photovoltaic cell to be tested is suspended in the hollow portion 115 and the surface to be tested is parallel to the plane determined by the first direction and the second direction;

[0052] The controller 19 is disposed at a first preset position of the detection device 10 ; the controller 19 is configured to: give a start instruction for detecting foreign objects on the photovoltaic cell to be tested and a stop instruction for ending the foreign object detection on the photovoltaic cell to be tested.

[0053] The detection beam emitter 13 is disposed on the first frame 111; the detection beam emitter 13 is configured to: emit a detection beam parallel to the surface to be tested of the photovoltaic cell to be tested along the second direction in response to a start instruction; the light intensity of the detection beam when emitted is the emission light intensity value;

[0054] The detection beam receiver 14 is disposed on the second frame 112 ; the detection beam receiver 14 is configured to: receive the detection beam and obtain its received light intensity value;

[0055] The processor 15 is arranged at a second preset position of the detection device 10; the processor 15 is configured to: generate a detection result according to the ratio of the received light intensity value to the emitted light intensity value, including: generating an unqualified detection result when the ratio of the received light intensity value to the emitted light intensity value is in a first preset interval; generating a qualified detection result when the ratio of the received light intensity value to the emitted light intensity value is in a second preset interval; wherein the first preset interval includes: 0 to 0.6; the second preset interval includes: greater than 0.6.

[0056] For details, please refer to Figure 1 The support assembly 11 provides a mounting base for the detection device 10 and includes a first frame 111, a second frame 112, a third frame 113, and a fourth frame 114. The first frame 111 and the second frame 112 are arranged opposite each other, while the third frame 113 and the fourth frame 114 are arranged opposite each other. Thus, the first frame 111, the second frame 112, the third frame 113, and the fourth frame 114 surround and form a hollow portion 115.

[0057] In some embodiments, the support assembly 11 can be arranged on a workbench in the related art.

[0058] In other embodiments, the support assembly 11 may also be arranged in a mounting frame, which has a receiving space for receiving the detection device 10 .

[0059] In some embodiments, the support component 11 can be assembled from four independent frames (i.e., a first frame 111, a second frame 112, a third frame 113, and a fourth frame 114); in other embodiments, the support component 11 can also be an integrated frame having four sides, corresponding to the first frame 111, the second frame 112, the third frame 113, and the fourth frame 114.

[0060] In some embodiments, each corner of the support assembly 11 has a support leg, which is used to connect to each frame to stabilize the support assembly 11 on the work machine. The support leg and the frame can be connected in a detachable manner or in a fixed manner, such as: bolt connection or welding.

[0061] In some embodiments, the first frame 111 , the second frame 112 , the third frame 113 and the fourth frame 114 surround and form a rectangle. Correspondingly, the shape of the hollow portion 115 is a rectangle.

[0062] The adsorption assembly 12 is used to suspend the photovoltaic cell to be tested in the hollow portion 115 in the hollow portion 115, and to make the surface to be tested of the photovoltaic cell to be tested parallel to the plane jointly determined by the first direction and the second direction, so as to facilitate the detection of foreign objects on the surface to be tested. The adsorption assembly 12 includes: a plurality of vacuum adsorption heads. The plurality of vacuum adsorption heads are spaced apart and stepped along the side walls of the support assembly 11, and are connected to each frame around the hollow portion 115. The plurality of vacuum adsorption heads are also connected to a pump. When the pump starts working, the vacuum adsorption heads are evacuated so that the vacuum adsorption heads adsorb the photovoltaic cell to be tested placed in the hollow portion 115, and the photovoltaic cell to be tested is suspended in the hollow portion 115. The vacuum adsorption head and the support assembly 11 can be connected in a detachable manner or in a fixed manner, which is not limited in this application.

[0063] In some embodiments, the adsorption component 12 can also be an adsorption component 12 with a blowing function, for example: the adsorption component 12 includes: an air source, an air blowing pipe and a pump, and the pump and air source are set on the machine for arranging the support component 11, and multiple air blowing pipes are evenly distributed on the support component 11, and the output ends of the multiple air blowing pipes are opposite to the hollow portion 115, that is, the hollow portion 115 is located above the output ends of the multiple air blowing pipes, and the input ends of the multiple air blowing pipes are connected to the pump and the air source. When there is a battery cell to be tested in the hollow portion 115, the pump supplies air to the multiple air blowing pipes through the air source, so that the multiple air blowing pipes blow air to the battery cell to be tested in the hollow portion 115 to provide supporting force, so that the battery cell to be tested is suspended in the hollow portion 115.

[0064] In some embodiments, the gas provided by the gas source includes nitrogen, argon, helium, or neon.

[0065] The controller 19 is disposed at a first preset position of the detection device 10 . For example, the controller 19 can be flexibly disposed on the support assembly 11 of the detection device 10 , and the two are mechanically connected in a detachable or fixed manner.

[0066] For example, the controller 19 includes: a control terminal, an industrial computer or a manufacturing control system, etc., which is used to give instructions for starting and ending foreign object detection.

[0067] The detection beam emitter 13 is disposed on a frame (eg, the first frame 111 ). In a possible implementation, the detection beam emitter 13 includes an infrared light emitter, an ultraviolet light emitter, or a laser emitter.

[0068] Correspondingly, the detection beam receiver 14 is arranged on the frame opposite to the detection beam emitter 13 (for example, the second frame 112). In one possible implementation, the detection beam receiver 14 includes: a photodiode sensor, a photoresistor sensor or a luminous flux sensor.

[0069] The distance between the detection light beam and the surface to be measured is 10 μm to 100 μm. For example, the distance is 10 μm, 20 μm, 50 μm, 70 μm, 80 μm or 100 μm.

[0070] In some embodiments, the processor 15 is disposed at a first predetermined position of the detection device 10. It is understood that the processor 15 can be a standalone component or integrated into another component processor 15. For example, when the processor 15 comprises a standalone component, it can be flexibly disposed on the support assembly 11 of the detection device 10; when the processor 15 is integrated into another component processor 15 (e.g., a machine processor 15), it can be integrally disposed within the machine processor 15.

[0071] In the embodiment of the present application, the detection beam emitter 13, the detection beam receiver 14, and the processor 15 cooperate to perform foreign object detection on the test surface of the photovoltaic cell to be tested. The detection beam emitter 13 emits a detection beam parallel to the test surface of the photovoltaic cell to be tested along a second direction, with the initial intensity of the detection beam comprising an emission intensity value. The detection beam receiver 14 receives the detection beam and obtains its received intensity value. In this manner, the processor 15 can perform a logical judgment based on the ratio of the received intensity value to the emitted intensity value: if the ratio of the received intensity value to the emitted intensity value is within a first predetermined range, it indicates that impurities such as impurities, dirt, and crystallized particles may be present on the test surface, causing an abnormal interruption or decrease in the detection beam intensity, thereby outputting a failed detection result. If the ratio of the received intensity value to the emitted intensity value is within a second predetermined range, it indicates that no foreign objects that could affect subsequent production processes are present on the test surface, thereby outputting a passed detection result. The inventors of this case also studied the effects of several typical impurities on the intensity of the detection beam in light of the relevant production process, and determined that the first preset interval includes: 0 to 0.6, for example, 0, 0.1, 0.3, 0.5 or 0.6; the second preset interval includes: greater than 0.6, for example, 0.7, 0.8, 0.9 or 1.

[0072] Here, the judgment logic of the processor 15 can be pre-written by a technician or equipment operator through an input / output device, and the controller 19 automatically runs and judges. For example, the input / output device includes: a keyboard, a mouse, and a touchpad.

[0073] In some embodiments, the detection beam emitter 13 and / or the detection beam receiver 14 may be connected to the frame in a detachable manner or in a fixed manner, such as bolt connection or welding.

[0074] In some embodiments, in order to improve the accuracy of relevant determination results and avoid misjudgment due to process errors, the present application further improves the detection device 10.

[0075] For example, the detection beam emitter 13 is configured to sequentially emit N detection beams (N ≥ 2), each arranged in parallel along a first direction, thereby scanning the surface of the photovoltaic cell to be tested. In other words, by controlling the number of detection beams emitted and the emission areas, foreign object detection can be achieved in part or all of the surface to be tested. Correspondingly, the detection beam receiver 14 is configured to sequentially receive each of the detection beams and obtain the corresponding received light intensity value. Based on this, the processor 15 can provide a more accurate detection result, avoiding false or missed detections.

[0076] The detection device 10 provided in the embodiment of the present application is constructed based on a support component 11 formed by four frame encirclements, wherein an adsorption component 12 is provided to suspend the photovoltaic cell to be tested in the hollow portion 115 and keep its surface to be tested in a preset position; a controller is provided to control the start and end of foreign body detection, and a detection beam emitter 13 and a detection beam receiver 14 are arranged relative to each other, wherein the detection beam emitter 13 responds to a start instruction and emits a detection beam parallel to the surface to be tested of the photovoltaic cell to be tested; the detection beam receiver 14 receives the detection beam and obtains its received light intensity value; the processor is based on A logical judgment is made on the received light intensity value and the emitted light intensity value (for example, when the ratio of the received light intensity value to the emitted light intensity value is within a first preset interval, an unqualified detection result is generated; when the ratio of the received light intensity value to the emitted light intensity value is within a second preset interval, a qualified detection result is generated), thereby timely and effectively realizing the functional requirement of performing foreign body detection on the battery cell to be tested during the preparation process, so as to facilitate timely discovery of defects in the battery cell to be tested and prevent it from continuing to flow into subsequent production processes (such as the grid line preparation process), thereby ensuring the production yield of the battery cell and avoiding possible loss of production materials.

[0077] Please continue reading Figure 2 In some embodiments, the detection device 10 further includes a purge assembly 16 for purging the test surface of the test cell suspended within the hollow portion 115 in response to a start command before the detection beam emitter 13 operates. It is understood that during the transportation process of the test cell, its test surface may be contaminated with easily cleanable impurity particles such as dust. Although these impurity particles may be detected during the foreign object detection process, there is no need to rework them. In this application, by providing the purge assembly 16, these impurities can be removed more conveniently, thereby improving the efficiency of subsequent foreign object detection.

[0078] In some embodiments, purge assembly 16 is disposed at a third predetermined position of detection device 10. For example, purge assembly 16 can be flexibly disposed on support assembly 11 of detection device 10, with the two mechanically connected in a detachable or fixed manner. Purge assembly 16 is connected to the aforementioned air source and purges the surface to be tested at a predetermined pressure to remove impurities such as dust.

[0079] Please continue reading Figure 2 In some embodiments, the detection device 10 further includes: a dust collection component 17 for collecting foreign particles blown by the aforementioned blowing component 16 and attached to the surface of the photovoltaic cell to be tested.

[0080] In some embodiments, dust collection assembly 17 is positioned at a fourth predetermined position on detection device 10. For example, dust collection assembly 17 can be flexibly positioned on support assembly 11 of detection device 10, with the two mechanically connected in a detachable or fixed manner. Dust collection assembly 17 is connected to a vacuum pump to absorb foreign particles at a certain negative pressure.

[0081] In the above embodiment, by providing the purge component 16 and the dust collection component 17, it is convenient to remove easy-to-clean foreign particles such as floating dust on the surface to be tested, so as to avoid being judged as unqualified in the subsequent foreign matter detection process and entering the rework process, thereby improving the detection efficiency.

[0082] Please continue reading Figure 1 In some embodiments, the inspection device 10 further includes an image collector 18 for capturing image information of the surface to be inspected of the cell under test, including images of foreign objects on the surface to be inspected. Specifically, the image collector's visual inspection complements the optical inspection system comprised of the aforementioned detection beam emitter 13 and detection beam receiver 14, thereby reducing the possibility of misjudgment. Furthermore, the image collector's visual inspection can be used to provide detection in the event of a malfunction in the optical inspection process.

[0083] The image collector 18 includes: a camera or a video camera; for example, the image collector 18 includes: an infrared camera, an ultraviolet camera, an infrared video camera or an ultraviolet camera.

[0084] The image collector 18 is integrated with the detection beam receiver 14 and is located in the space above the hollow portion 115. Alternatively, the image collector 18 can be located in the space below the hollow portion 115. Alternatively, one image collector 18 can be installed in the space above and one in the space below the hollow portion 115.

[0085] In some embodiments, the image collector 18 and the detection beam receiver 14 may be connected in a detachable manner or in a fixed manner, such as bolt connection or welding.

[0086] Please continue reading Figure 3 In some embodiments, the controller 19 is further configured to generate corresponding control instructions based on the detection results. The detection device 10 also includes a first conveying component 20, a second conveying component 21, a third conveying component 22 and a transfer component 23.

[0087] The first conveying assembly 20 is movably disposed in the hollow portion 115 ; the first conveying assembly 20 is configured to: in response to a start instruction, receive the battery cell to be tested from the first production station 01 and convey it to the adsorption assembly 12 .

[0088] For example, the first production station 01 includes a front-end production process for performing foreign matter detection, such as: a preparation process of a transparent conductive layer (ITO layer); or, it can also be a cleaning process; or, it can be any front-end process for performing a gate line preparation process; it can also include a temporary storage station for the battery cells to be tested, which is not limited in this application.

[0089] For example, the first conveyor assembly 20 includes a conveyor member 201 and a telescopic member 202. The conveyor member 201 is configured to reciprocate along a third direction through the hollow portion 115, driven by the telescopic member 202; the third direction is perpendicular to the first and second directions. By arranging the movable configuration of the first conveyor assembly 20, it is possible to promptly receive battery cells to be tested from the first production station 01 and transport them to the adsorption assembly 12 located in the hollow portion 115. For example, the raised state of the first conveyor assembly 20 represents the first operating state for receiving battery cells to be tested from the first production station 01; the lowered state represents the second operating state for transporting battery cells to be tested to the adsorption assembly 12.

[0090] In one possible implementation, the telescopic component 202 includes at least two telescopic cylinders, the fixed ends of the two telescopic cylinders are arranged on the workbench at intervals and located in the hollow portion 115, and the free ends of the telescopic cylinders are connected to the conveying component 201 of the first conveying assembly 20.

[0091] When the first conveying assembly 20 needs to receive the battery cell to be tested from the first production station 01 , the telescopic cylinder extends and drives the conveying component 201 to pass through the hollow portion 115 and stop in the area above the hollow portion 115 to receive the battery cell to be tested from the first production station 01 .

[0092] When the first feeding assembly needs to transport the battery cell to be tested into the hollow portion 115, the telescopic cylinder contracts to drive the conveying component 201 back to the preset position in the hollow portion 115, so that the battery cell to be tested is adsorbed and suspended by the adsorption assembly 12, and then the subsequent foreign matter detection step is carried out.

[0093] For example, the conveying component 201 includes: a belt conveyor, a roller conveyor or a flat conveyor.

[0094] For example, the telescopic component 202 includes one or more of a linear guide rail, an electric cylinder, a hydraulic cylinder, and a lead screw.

[0095] In some embodiments, the second conveying assembly 21 is disposed between the support assembly 11 and the second production station 02 ; the second conveying assembly 21 is configured to receive the battery cell to be tested from the support assembly 11 and convey it to the second production station 02 .

[0096] Here, the second conveying assembly 21 is used to convey the photovoltaic cells to be tested (ie, qualified cells) that have passed the surface foreign matter detection to the second production station 02 for subsequent production.

[0097] Illustratively, the second production station 02 includes: a grid line preparation station, such as a screen printer, an inkjet printer, or an electrode plating tank.

[0098] For example, the second conveying assembly 21 includes: a belt conveyor, a roller conveyor or a flat conveyor.

[0099] In some embodiments, the third conveying assembly 22 is disposed between the support assembly 11 and the rework station 03 ; the second conveying assembly 21 is configured to receive the battery cell to be tested from the support assembly 11 and convey it to the rework station 03 .

[0100] Here, the third conveying assembly 22 is used to convey the photovoltaic cells to be tested that have not passed the surface foreign matter detection (ie, unqualified cells) to the rework station 03 to perform the rework process.

[0101] For example, the rework process includes: a re-cleaning process or a recycling process.

[0102] For example, the third conveying component 22 includes: a belt conveyor, a roller conveyor or a flat conveyor.

[0103] In some embodiments, the transfer component 23 is movably disposed above the support component 11 , and the transfer component 23 is configured to: in response to a control instruction from the controller 19 , transfer the battery cell to be tested after foreign object detection to the second conveying component 21 or the third conveying component 22 .

[0104] Here, the transfer component 23 can divert the photovoltaic cells to be tested after the foreign object detection is completed. For example, the photovoltaic cells to be tested that have passed the surface foreign object detection will be transported to the second conveying component 21, and then transported to the second production station 02 via the second conveying component 21 for subsequent production; the latter will transfer the photovoltaic cells to be tested that have not passed the surface foreign object detection to the third conveying component 22, and then transported to the rework station 03 via the third conveying component 22 to perform the rework process.

[0105] For example, the transfer component 23 includes: a vacuum adsorption head and a driving component.

[0106] For example, the drive component includes a linear guide, a lead screw, or a cylinder. The drive component can achieve a sliding connection with the work platform or mounting frame via a slider cylinder, or it can achieve the effect of sliding the electric telescopic cylinder on the work platform or mounting frame via a linear reciprocating drive mechanism consisting of a threaded block, a lead screw, and a motor. The linear reciprocating drive mechanism consisting of the threaded block, the lead screw, and the motor is connected in a conventional manner. The specific connection method is well known to technicians and will not be detailed here.

[0107] Example 2

[0108] See also Figure 4 The present invention provides a detection system 00 for implementing the detection device 10 provided in the first embodiment in the field of photovoltaic cell detection. The detection object of the detection system 00 includes a photovoltaic cell to be detected having a first surface to be detected and a second surface to be detected that are arranged opposite to each other. The detection system 00 includes:

[0109] Two detection devices 10 as provided in some of the aforementioned embodiments; and a flipping device 30 arranged between the two detection devices 10; wherein the two detection devices 10 are used to perform foreign object detection on the first surface to be tested and the second surface to be tested respectively; the flipping device 30 is used to flip the photovoltaic cell to be tested.

[0110] In some embodiments, the first conveying assembly 20 of the former of the two detection devices 10 is used to connect the first production station 01 and the flipping device 30 ; the first conveying assembly 20 of the latter of the two detection devices 10 is used to connect the flipping device 30 .

[0111] Here, after the first surface of the photovoltaic cell to be tested is detected for foreign objects by the former of the two detection devices 10, it is turned over by the flipping device 30 so that the second surface to be tested is exposed, and then transferred to the latter of the two detection devices 10 for foreign object detection.

[0112] In some embodiments, the flipping device 30 includes: a roller-type flipping mechanism, a connecting rod-type flipping mechanism, or a mechanical rotary arm-type flipping mechanism.

[0113] The detection system 00 provided in the embodiment of the present application, in addition to realizing the technical advantages that can be obtained by the aforementioned detection device 10, can also realize foreign body detection on the first surface to be tested and the second surface to be tested relative to the battery cell to be tested, further broadening the application scope of the aforementioned detection device 10 and improving the detection efficiency.

[0114] Example 3

[0115] See also Figure 5The present invention provides a manufacturing system for applying the detection system 00 provided in some of the aforementioned embodiments in the manufacturing field. The manufacturing system includes: a first production station 01, the detection system 00 provided in some of the aforementioned embodiments, a second production station 02, and a rework station 03.

[0116] In some embodiments, the first production station 01 is used to perform a first type of production process on the photovoltaic cell to be tested; for example, the first type of production process includes: a transparent conductive film (ITO layer) preparation process; the first production station 01 includes: a magnetron physical vapor deposition machine.

[0117] In some embodiments, the detection system 00 is connected to the first production station 01; the detection system 00 is used to detect foreign matter on the surface to be tested of the photovoltaic cell to be tested.

[0118] Among them, the adsorption component 12 suspends the photovoltaic cell to be tested in the hollow portion 115 and keeps its surface to be tested in a preset position; a detection beam emitter 13 and a detection beam receiver 14 are arranged relative to each other, wherein the detection beam emitter 13 emits a detection beam parallel to the surface to be tested of the photovoltaic cell to be tested; the detection beam receiver 14 receives the detection beam and generates a corresponding detection signal (for example, if the corresponding detection beam is received, it can be determined that the relevant optical path is normally connected; if the corresponding detection beam is not received or the characteristics such as the light intensity of the received detection beam do not meet the preset value, it can be determined that the relevant optical path is abnormally interrupted); the processor 15 performs a comprehensive analysis based on the aforementioned detection signal and further provides the detection result of the cell to be tested (qualified or unqualified). In this way, foreign matter detection of the cell to be tested is realized in a timely and effective manner during the preparation process.

[0119] In some embodiments, the second production station 02 is connected to the detection system 00 ; the second production station 02 is used to receive the photovoltaic cell to be tested from the detection system 00 and perform a second type of production process on it.

[0120] For example, the second type of production process includes a gate line preparation process; the second production station 02 includes: a screen printer, an inkjet printer or an electrode plating tank.

[0121] The rework station 03 is connected to the detection system 00; the rework station 03 is used to receive the photovoltaic cells to be tested from the detection system 00 and perform a rework process on them.

[0122] For example, the rework process includes a cleaning or recycling process; the rework station 03 includes a cleaning tank or a recycling machine.

[0123] The manufacturing system provided in the embodiment of the present application, in addition to realizing the technical advantages that can be obtained by the aforementioned detection system 00, can also realize the convenient linkage between the manufacturing system in the related technology and the detection system 00, so as to facilitate the timely and accurate diversion of the battery cells to be tested (transfer to the second production station 02 or the rework station 03) based on the detection results of the battery cells to be tested, thereby effectively improving the manufacturing efficiency.

[0124] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A detection device for detecting foreign matter on the surface of a photovoltaic cell to be tested after the coating process is completed, characterized in that: include: The support assembly includes: a first frame and a second frame spaced apart and parallel to a first direction, and a third frame and a fourth frame spaced apart and parallel to the second direction; the first direction is perpendicular to the second direction; the first frame, the second frame, the third frame, and the fourth frame surround a hollow portion; A plurality of adsorption components are distributed circumferentially along the hollow portion of the support component; the adsorption components are configured to: adsorb the photovoltaic cell to be tested so that the photovoltaic cell to be tested is suspended in the hollow portion and the surface to be tested is parallel to the plane jointly determined by the first direction and the second direction; A controller is provided at a first preset position of the detection device; the controller is configured to: provide a start instruction for performing foreign object detection on the photovoltaic cell to be tested and an end instruction for ending foreign object detection on the photovoltaic cell to be tested; A detection beam emitter is provided on the first frame; the detection beam emitter is configured to: emit a detection beam parallel to the surface to be tested of the photovoltaic cell to be tested along the second direction in response to the start instruction; the light intensity of the detection beam when emitted is the emission light intensity value; A detection beam receiver is provided on the second frame; the detection beam receiver is configured to: receive the detection beam and obtain a received light intensity value thereof; A processor is arranged at a second preset position of the detection device; the processor is configured to: generate a detection result based on the ratio of the received light intensity value to the emitted light intensity value, including: generating an unqualified detection result when the ratio of the received light intensity value to the emitted light intensity value is in a first preset interval; generating a qualified detection result when the ratio of the received light intensity value to the emitted light intensity value is in a second preset interval.

2. The detection device according to claim 1, characterized in that The interval between the detection beam and the surface to be measured includes: 10 μm to 100 μm; The first preset interval includes: 0 to 0.6; The second preset interval includes: greater than 0.

6.

3. The detection device according to claim 1, characterized in that The detection beam emitter is configured to: sequentially emit N detection beams (N≥2) to scan the surface of the photovoltaic cell to be tested; each detection beam is arranged in parallel along the first direction; Correspondingly, The detection beam receiver is configured to: receive each of the detection beams in sequence and obtain a corresponding received light intensity value.

4. The detection device according to claim 1, characterized in that Also includes: A purge component is provided at a third preset position of the detection device; the purge component is configured to: in response to the start instruction, purge the surface to be tested of the photovoltaic cell to be tested suspended in the hollow portion.

5. The detection device according to claim 4, characterized in that Also includes: The dust collection component is arranged at the fourth preset position of the detection device; the dust collection component is configured to collect foreign particles blown by the blowing component and attached to the surface of the photovoltaic cell to be tested.

6. The detection device according to claim 4, characterized in that The detection beam emitter includes: an infrared light emitter, an ultraviolet light emitter or a laser emitter; Correspondingly, the detection light beam receiver includes: a photodiode sensor, a photoresistor sensor or a light flux sensor.

7. The detection device according to claim 1, characterized in that The controller is further configured to generate corresponding control instructions according to the detection result, and is characterized in that it further includes: a first conveying assembly movably disposed in the hollow portion; the first conveying assembly being configured to: in response to the start instruction, receive the photovoltaic cell to be tested from the first production station and convey it to the adsorption assembly; A second conveying assembly is provided between the support assembly and the second production station; the second conveying assembly is configured to: receive the photovoltaic cell to be tested from the support assembly and convey it to the second production station; a third conveying assembly disposed between the support assembly and the rework station; the second conveying assembly being configured to: receive the photovoltaic cell to be tested from the support assembly and convey it to the rework station; A transfer component is movably arranged above the support component; the transfer component is configured to: in response to a control instruction from the controller, transfer the photovoltaic cell to be tested that has passed the inspection to the second conveying component; or transfer the photovoltaic cell to be tested that has failed the inspection to the third conveying component.

8. The detection device according to claim 7, characterized in that The first conveying assembly includes: a conveying component and a telescopic component; the conveying component is configured to: in response to the start instruction, reciprocate along a third direction through the hollow portion under the drive of the telescopic component; the third direction is perpendicular to the first direction and the second direction.

9. A detection system for detecting foreign matter on a surface to be tested of a photovoltaic cell to be tested, wherein the surface to be tested includes a first surface to be tested and a second surface to be tested that are arranged opposite to each other; characterized in that: include: Two detection devices according to any one of claims 1 to 8; And, a flip device arranged between the two detection devices; wherein, The two detection devices are used to perform foreign matter detection on the first surface to be tested and the second surface to be tested respectively; The flipping device is used to flip the photovoltaic cell to be tested.

10. A manufacturing system for manufacturing photovoltaic cells to be tested, characterized in that: include: A first production station is used to perform a first type of production process on the photovoltaic cell to be tested; The detection system according to claim 9, connected to the first production station; the detection system is used to detect foreign matter on the surface to be tested of the photovoltaic cell to be tested; A second production station is connected to the detection system; the second production station is used to receive the photovoltaic cell to be tested from the detection system and perform a second type of production process on it; A rework station is connected to the detection system; the rework station is used to receive the photovoltaic cell to be tested from the detection system and perform a rework process on it.

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