WO2021120492A1 - 一种光伏板缺陷外观检测装置 - Google Patents

一种光伏板缺陷外观检测装置 Download PDF

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Publication number
WO2021120492A1
WO2021120492A1 PCT/CN2020/088270 CN2020088270W WO2021120492A1 WO 2021120492 A1 WO2021120492 A1 WO 2021120492A1 CN 2020088270 W CN2020088270 W CN 2020088270W WO 2021120492 A1 WO2021120492 A1 WO 2021120492A1
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inspection
photovoltaic panel
dimensional space
room
detection
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PCT/CN2020/088270
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English (en)
French (fr)
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武勇
李华超
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苏州巨能图像检测技术有限公司
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Publication of WO2021120492A1 publication Critical patent/WO2021120492A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L22/00—Testing or measuring during manufacture or treatment; Reliability measurements, i.e. testing of parts without further processing to modify the parts as such; Structural arrangements therefor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

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  • the utility model belongs to the technical field of photovoltaic panel detection, in particular to a photovoltaic panel defect appearance detection device.
  • photovoltaic panels require employees to conduct visual inspections on whether there are defects or foreign objects inside the modules, including: splits, fragments, foreign objects, exposed white, glass scratches, inter-slice spacing, etc. Observing these defects through the naked eye for a long time under the illumination of the light will cause visual fatigue, thereby reducing the production efficiency, and the reliability of the test results is low, which affects the product quality.
  • the main purpose of the utility model is to provide a photovoltaic panel defect appearance detection device, which adopts automatic conveying line in and out, and uses visual detection technology to realize automatic photo detection, which greatly improves detection efficiency and reliability of detection results, and improves product quality.
  • a photovoltaic panel defect appearance inspection device which includes a first inspection room and a second inspection room with a dark room environment, and penetrates the first inspection room and the second inspection room.
  • first detection chamber and the second detection chamber are arranged adjacent to each other.
  • the light homogenizing plate includes a first light homogenizing plate arranged in parallel with the surface light source, and a light homogenizing plate located between the first light homogenizing plate and the surface light source and used to directly irradiate the surface light source on the product surface and the camera.
  • the second homogenizing plate blocked by the light of the lens, the third and fourth homogenizing plates that form the top and bottom walls of the three-dimensional space, respectively, and the front side and rear side walls of the three-dimensional space.
  • the fifth and sixth homogenizing plates are examples of the light homogenizing plate.
  • the conveying device is provided with a plurality of units and each includes a driving member, a rotating shaft driven to rotate by the driving member, a plurality of synchronous belt wheels fixed on the rotating shaft, and a plurality of synchronous belt wheels arranged corresponding to the synchronous belt wheels.
  • the two sides of the conveying device are provided with limit devices that limit the positions of the two sides of the photovoltaic panel.
  • the limiting device includes an air cylinder, a supporting truss that is driven by the air cylinder to move perpendicular to the conveying direction of the conveying device, and a plurality of side limiting rollers fixed on the supporting truss.
  • the EL camera group is an EL tester.
  • first camera group and the second camera group are electrically connected to an upper computer with a built-in photovoltaic panel appearance defect detection program.
  • the uniform light plates are all diffuser plates.
  • the present utility model has the beneficial effects of the photovoltaic panel defect appearance inspection device: automatic entry and exit of products is realized, automatic defect inspection and appearance inspection are realized through camera shooting combined with visual inspection technology;
  • the inspection room and the second inspection room separate the defect inspection from the appearance inspection, which effectively avoids the probes from interfering with the appearance of the back surface;
  • the surface light source is used for lighting in the dark room of the appearance inspection, and the diffuse reflection of the diffuser is used to distribute the light evenly.
  • the direct light irradiated by the surface light source to the product surface area and the camera lens is blocked by a diffuser, which further improves the product imaging effect and improves the detection accuracy.
  • Figure 1 is a schematic structural diagram of an embodiment of the utility model
  • Figure 2 is a schematic diagram of the internal structure of the first detection chamber in the embodiment of the utility model
  • Figure 3 is a schematic diagram of the internal structure of the second detection chamber in the embodiment of the utility model
  • FIG. 4 is a schematic diagram of the structure of the conveying device and the limiting device in the embodiment of the utility model
  • Figure 5 is a schematic diagram of the structure of the limiting device in the embodiment of the utility model
  • this embodiment is a photovoltaic panel defect appearance inspection device 100, which includes a first inspection room 1 and a second inspection room 2 in a dark room environment, which penetrates the first inspection room 1 and the second inspection room
  • the conveying device 3 of the chamber 2 the EL camera group 4 that is arranged at the bottom of the first inspection chamber 1 to take pictures of the product, the surface light source 5 arranged on the side of the second inspection chamber 2, and is arranged in the second inspection chamber 2 and enclosed
  • a number of light homogenizing plates forming a three-dimensional space 6, a first camera group 7 arranged at the top of the three-dimensional space 6, and a second camera group 8 arranged at the bottom of the three-dimensional space 6.
  • the first detection chamber 1 and the second detection chamber 2 are arranged adjacent to each other.
  • the light homogenizing plate includes a first light homogenizing plate 9 arranged in parallel with the surface light source 5, and a first light homogenizing plate 9 located between the first light homogenizing plate 9 and the surface light source 5 and used to directly irradiate the surface light source 5 on the product surface and blocking the light of the camera lens.
  • the homogenizing plates are all diffuser plates.
  • the conveying device 3 is provided with multiple units and each includes a driving member 31, a rotating shaft 32 driven to rotate by the driving member 31, a number of synchronous pulleys (not shown in the figure) fixed on the rotating shaft 32, and a number of corresponding to the synchronous pulleys.
  • the transmission wheel, the timing belt 33 connecting the timing belt wheel and the transmission wheel, and the product is placed on the timing belt 33 along with the timing belt 33 to automatically enter and exit the first inspection room 1 and the second inspection room 2.
  • Limiting devices 14 for limiting the positions of the two sides of the photovoltaic panel are provided on both sides of the conveying device 3.
  • the limiting device 14 includes an air cylinder 141, a supporting truss 142 that is driven by the air cylinder 141 to move perpendicular to the conveying direction of the conveying device 3, and a plurality of side limiting rollers 143 fixed on the supporting truss 142.
  • the EL camera set 4 is an EL tester.
  • the EL tester is called an electroluminescence tester. It is a kind of internal defect detection equipment for solar cells or battery components; it is often used to detect internal defects and hidden defects of solar cell components. Cracks, fragments, virtual welding, broken grids, and abnormal phenomena of monolithic cells with different conversion efficiencies.
  • the first camera group 7 and the second camera group 8 obtain product surface images from the front and back sides of the product, respectively.
  • the camera group is connected to the upper computer, and the upper computer is equipped with detection software, which is obtained through the first camera group 7 and the second camera group 8.
  • the picture of is uploaded to the upper computer, and it is automatically judged whether it is qualified through the comparison and analysis of the software in the upper computer.
  • the detection software involves a computer program, which is a conventional means and well-known technology in the field of visual inspection. Therefore, this embodiment will not be described in detail.
  • This embodiment is a photovoltaic panel defect appearance inspection device 100.
  • the photovoltaic panel first enters the first inspection room 1 through the conveying device 3, and the defect inspection is performed by the EL camera group 4; then enters the second inspection room 2 through the conveying device 3, and the surface light source 5 Turn on, and the surroundings will be evenly illuminated by the diffuse reflection of each surface of the three-dimensional space.
  • the first camera group 7 and the second camera group 8 located above and below the product take pictures of the product, and the host computer will take 12 pictures after three steps. Spliced into a complete picture, the overall brightness of the picture taken by the camera is uniform, which can clearly reflect the defect, and the auxiliary recognition software automatically circles the defect; then the product is output through the conveying device 3.
  • the photovoltaic panel defect appearance inspection device 100 of this embodiment realizes the automatic entry and exit of products, and realizes automatic defect detection and appearance inspection through camera shooting combined with visual inspection technology; by setting the first inspection room and the second inspection room, the defect inspection and appearance inspection are combined.
  • the detection is separated, which effectively avoids the interference of the probe on the appearance of the back surface;
  • the surface light source is used in the appearance detection dark room, and the diffuse reflection of the diffuser is used to distribute the light evenly, which improves the effect of photographing and imaging, and makes the detection result more accurate Reliable;
  • the direct light irradiated by the surface light source to the product surface area and the camera lens is blocked by a diffuser, which further improves the product imaging effect and improves the detection accuracy.

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  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Chemical & Material Sciences (AREA)
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  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
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  • Computer Hardware Design (AREA)
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  • Microelectronics & Electronic Packaging (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
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Abstract

本实用新型揭示了一种光伏板缺陷外观检测装置，其包括内部为暗室环境的第一检测室与第二检测室、贯穿所述第一检测室与所述第二检测室的输送装置、设置在所述第一检测室底部对产品进行拍照的EL相机组、设置在所述第二检测室一侧的面光源、设置在所述第二检测室内且围挡形成一立体空间的若干匀光板、设置在所述立体空间顶部的第一相机组、以及设置在所述立体空间底部的第二相机组。本实用新型采用自动输送线进出，利用视觉检测技术实现自动拍照检测，大大提高了检测效率以及检测结果的可靠性，提高了产品品质。

Description

一种光伏板缺陷外观检测装置 【技术领域】
本实用新型属于光伏板检测技术领域，特别是涉及一种光伏板缺陷外观检测装置。
【背景技术】
太阳能组件光伏板在制造过程中需要员工对组件内部是否存在不良或异物进行外观检测，其中包括：裂片、破片、异物、露白、玻璃划伤、片间距串间距等。通过肉眼长时间的在灯光照射下去观察发现这些不良缺陷，会造成视觉疲劳，从而降低生产的效率，且检测结果可靠度低，影响产品质量。
因此，有必要提供一种新的光伏板缺陷外观检测装置来解决上述问题。
【实用新型内容】
本实用新型的主要目的在于提供一种光伏板缺陷外观检测装置，采用自动输送线进出，利用视觉检测技术实现自动拍照检测，大大提高了检测效率以及检测结果的可靠性，提高了产品品质。
本实用新型通过如下技术方案实现上述目的：一种光伏板缺陷外观检测装置，其包括内部为暗室环境的第一检测室与第二检测室、贯穿所述第一检测室与所述第二检测室的输送装置、设置在所述第一检测室底部对产品进行拍照的EL相机组、设置在所述第二检测室一侧的面光源、设置在所述第二检测室内且围挡形成一立体空间的若干匀光板、设置在所述立体空间顶部的第一相机组、以及设置在所述立体空间底部的第二相机组。
进一步的，所述第一检测室与所述第二检测室相邻设置。
进一步的，所述匀光板包括与所述面光源平行设置的第一匀光板、位于所述第一匀光板与所述面光源之间的且用于将所述面光源直射于产品表面和相机镜头的光挡住的第二匀光板、分别形成所述立体空间顶部围挡和底部围挡的第三匀光板、第四匀光板、分别形成所述立体空间前侧围挡和后侧围挡的第五匀光板、第六匀光板。
进一步的，所述输送装置设置有多个单元且均包括驱动件、受所述驱动 件驱动进行旋转的转轴、固定在所述转轴上的若干同步带轮、若干与所述同步带轮对应设置的传动轮、连接所述同步带轮与所述传动轮的同步带。
进一步的，所述输送装置的两侧设置有对光伏板两侧进行限位的限位装置。
进一步的，所述限位装置包括气缸、受所述气缸驱动垂直于所述输送装置输送方向运动的支撑桁架、固定在所述支撑桁架上的若干侧边限位滚轮。
进一步的，所述EL相机组为EL测试仪。
进一步的，所述第一相机组、所述第二相机组与一内置有光伏板外观缺陷检测程序的上位机电气连接。
进一步的，所述匀光板均为扩散板。
与现有技术相比，本实用新型一种光伏板缺陷外观检测装置的有益效果在于：实现了产品的自动进出，通过相机拍摄结合视觉检测技术实现了自动缺陷检测和外观检测；通过设置第一检测室和第二检测室，将缺陷检测与外观检测分开，有效的避免了探针对背面外观成像形成干扰；外观检测暗室内采用面光源打光，再利用扩散板的漫反射让光均匀分布，提高了拍照成像的效果，使得检测结果更加精准可靠；在面光源照射至产品表面区域和相机镜头的直射光用扩散板挡住，进一步的提高了产品成像效果，提高了检测精准度。
【附图说明】
图1为本实用新型实施例的结构示意图；
图2为本实用新型实施例中第一检测室的内部结构示意图；
图3为本实用新型实施例中第二检测室的内部结构示意图；
图4为本实用新型实施例中输送装置与限位装置的结构示意图；
图5为本实用新型实施例中限位装置的结构示意图；
图中数字表示：
100光伏板缺陷外观检测装置；
1第一检测室；2第二检测室；3输送装置，31驱动件，32转轴，33同步带；4EL相机组；5面光源；6立体空间；7第一相机组；8第二相机组；9 第一匀光板；10第二匀光板；11第三匀光板；12第四匀光板；13第六匀光板；14限位装置，141气缸，142支撑桁架，143侧边限位滚轮。
【具体实施方式】
实施例：
请参照图1-图5，本实施例一种光伏板缺陷外观检测装置100，其包括内部为暗室环境的第一检测室1与第二检测室2、贯穿第一检测室1与第二检测室2的输送装置3、设置在第一检测室1底部对产品进行拍照的EL相机组4、设置在第二检测室2一侧的面光源5、设置在第二检测室2内且围挡形成一立体空间6的若干匀光板、设置在所述立体空间6顶部的第一相机组7、以及设置在所述立体空间6底部的第二相机组8。
第一检测室1与第二检测室2相邻设置。
所述匀光板包括与面光源5平行设置的第一匀光板9、位于第一匀光板9与面光源5之间的且用于将面光源5直射于产品表面和相机镜头的光挡住的第二匀光板10、分别形成立体空间6顶部围挡和底部围挡的第三匀光板11、第四匀光板12、分别形成立体空间6前侧围挡和后侧围挡的第五匀光板(图中未标识)、第六匀光板13。所述匀光板均为扩散板。
输送装置3设置有多个单元且均包括驱动件31、受驱动件31驱动进行旋转的转轴32、固定在转轴32上的若干同步带轮(图中未标识)、若干与同步带轮对应设置的传动轮、连接所述同步带轮与所述传动轮的同步带33，产品放置在所述同步带33上随着同步带33自动进出第一检测室1与第二检测室2。
输送装置3的两侧设置有对光伏板两侧进行限位的限位装置14。限位装置14包括气缸141、受气缸141驱动垂直于输送装置3输送方向运动的支撑桁架142、固定在支撑桁架142上的若干侧边限位滚轮143。
本实施例中，EL相机组4为EL测试仪，EL测试仪全称为电致发光测试仪，是一种太阳能电池或电池组件的内部缺陷检测设备；常用于检测太阳能电池组件的内部缺陷、隐裂、碎片、虚焊、断栅以及不同转换效率单片电池异常现象。
第一相机组7、第二相机组8分别从产品的正面与反面获取产品表面图像， 相机组连接上位机，上位机中安装有检测软件，通过第一相机组7和第二相机组8获取的图片上传至上位机，通过上位机中的软件对比分析自动判定是否合格，其检测软件涉及计算机程序，属于视觉检测领域内的常规手段与熟知技术，因此，本实施例不再进行详细描述。
本实施例一种光伏板缺陷外观检测装置100，光伏板通过输送装置3首先进入第一检测室1，通过EL相机组4进行缺陷检测；然后通过输送装置3进入第二检测室2，面光源5开启，通过立体空间6各个面匀光板的漫反射将四周均匀照亮，位于产品上下的第一相机组7和第二相机组8对产品拍照，走位三次拍照后上位机将12幅图片拼接成一张完整的图片，其相机拍摄的图片整体亮度均匀，能够明显的体现出缺陷，辅助识别软件自动圈出缺陷；然后通过输送装置3将产品输出。
本实施例光伏板缺陷外观检测装置100实现了产品的自动进出，通过相机拍摄结合视觉检测技术实现了自动缺陷检测和外观检测；通过设置第一检测室和第二检测室，将缺陷检测与外观检测分开，有效的避免了探针对背面外观成像形成干扰；外观检测暗室内采用面光源打光，再利用扩散板的漫反射让光均匀分布，提高了拍照成像的效果，使得检测结果更加精准可靠；在面光源照射至产品表面区域和相机镜头的直射光用扩散板挡住，进一步的提高了产品成像效果，提高了检测精准度。
以上所述的仅是本实用新型的一些实施方式。对于本领域的普通技术人员来说，在不脱离本实用新型创造构思的前提下，还可以做出若干变形和改进，这些都属于本实用新型的保护范围。

Claims (9)

  1. 一种光伏板缺陷外观检测装置，其特征在于：其包括内部为暗室环境的第一检测室与第二检测室、贯穿所述第一检测室与所述第二检测室的输送装置、设置在所述第一检测室底部对产品进行拍照的EL相机组、设置在所述第二检测室一侧的面光源、设置在所述第二检测室内且围挡形成一立体空间的若干匀光板、设置在所述立体空间顶部的第一相机组、以及设置在所述立体空间底部的第二相机组。
  2. 如权利要求1所述的光伏板缺陷外观检测装置，其特征在于：所述第一检测室与所述第二检测室相邻设置。
  3. 如权利要求1所述的光伏板缺陷外观检测装置，其特征在于：所述匀光板包括与所述面光源平行设置的第一匀光板、位于所述第一匀光板与所述面光源之间的且用于将所述面光源直射于产品表面和相机镜头的光挡住的第二匀光板、分别形成所述立体空间顶部围挡和底部围挡的第三匀光板、第四匀光板、分别形成所述立体空间前侧围挡和后侧围挡的第五匀光板、第六匀光板。
  4. 如权利要求1所述的光伏板缺陷外观检测装置，其特征在于：所述输送装置设置有多个单元且均包括驱动件、受所述驱动件驱动进行旋转的转轴、固定在所述转轴上的若干同步带轮、若干与所述同步带轮对应设置的传动轮、连接所述同步带轮与所述传动轮的同步带。
  5. 如权利要求1所述的光伏板缺陷外观检测装置，其特征在于：所述输送装置的两侧设置有对光伏板两侧进行限位的限位装置。
  6. 如权利要求5所述的光伏板缺陷外观检测装置，其特征在于：所述限位装置包括气缸、受所述气缸驱动垂直于所述输送装置输送方向运动的支撑桁架、固定在所述支撑桁架上的若干侧边限位滚轮。
  7. 如权利要求1所述的光伏板缺陷外观检测装置，其特征在于：所述EL相机组为EL测试仪。
  8. 如权利要求1所述的光伏板缺陷外观检测装置，其特征在于：所述第一相机组、所述第二相机组与一内置有光伏板外观缺陷检测程序的上位机电气连接。
  9. 如权利要求1所述的光伏板缺陷外观检测装置，其特征在于：所述匀光板均为扩散板。
PCT/CN2020/088270 2019-12-17 2020-04-30 一种光伏板缺陷外观检测装置 WO2021120492A1 (zh)

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