CN107276532B - A flexible solar cell bending resistance tester and testing method - Google Patents
A flexible solar cell bending resistance tester and testing method Download PDFInfo
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Abstract
Description
技术领域technical field
本发明涉及一种检测系统，具体涉及一种柔性太阳能电池耐弯曲性能检测仪及检测方法。The invention relates to a detection system, in particular to a flexible solar cell bending resistance tester and a detection method.
背景技术Background technique
柔性太阳能电池通常是指在柔性材料（不锈钢、聚合物等）上制作的可弯曲薄膜太阳能电池。传统的晶硅太阳能电池占据了市场主流，但是因其重量大、不可弯曲以及安装运输不便限制了应用领域；而柔性太阳能电池则克服了以上不足，具有重量轻、厚度薄、运输便利等优势，同时具有较高的可弯曲能力，可在道路、建筑物外墙等处安装使用。Flexible solar cells generally refer to bendable thin-film solar cells fabricated on flexible materials (stainless steel, polymers, etc.). Traditional crystalline silicon solar cells occupy the mainstream of the market, but their application fields are limited due to their heavy weight, inflexibility, and inconvenient installation and transportation; flexible solar cells overcome the above shortcomings, and have the advantages of light weight, thin thickness, and convenient transportation. At the same time, it has high bendability, and can be installed and used on roads, building exterior walls, etc.
柔性太阳能电池通常以卷曲的方式存放，在使用过程中也经常处于弯曲状态。然而，柔性太阳能电池在发生大角度弯曲甚至卷曲扭转时，会影响柔性电池的光电性能，重复弯折扭曲也会显著影响柔性太阳能电池的使用寿命。Flexible solar cells are usually stored in a rolled form and are often bent during use. However, when flexible solar cells are bent at a large angle or even curled and twisted, the photoelectric performance of flexible solar cells will be affected, and repeated bending and twisting will also significantly affect the service life of flexible solar cells.
对于柔性太阳能电池，弯曲条件对光电转化性能的影响是柔性太阳能电池产品质量和可靠性的关键因素之一。目前，仅有少量直接对柔性太阳能电池进行耐弯曲性测试的研究报道，结果表明随弯曲次数和角度的增长，电池光电性能显著下降。但是整个测试过程全部通过手工操作完成定位，无法控制精度；而且在测试中手动进行重复弯曲循环，这一过程既无法保证重复定位精度，也极大地消耗了时间和体力。For flexible solar cells, the effect of bending conditions on photoelectric conversion performance is one of the key factors for the quality and reliability of flexible solar cell products. At present, there are only a few research reports on the direct bending resistance test of flexible solar cells, and the results show that with the increase of bending times and angles, the photoelectric performance of the cells decreases significantly. However, the entire testing process is done by manual positioning, and the accuracy cannot be controlled; moreover, the repeated bending cycle is performed manually during the test. This process can neither guarantee the repeat positioning accuracy, but also consumes a lot of time and physical strength.
国内外的相关研究中由于缺乏易操作的耐弯曲性测试设备，均使用手动离线测试方法，表明了耐弯曲性原位检测仪器研制的必要性。Due to the lack of easy-to-operate bending resistance testing equipment in domestic and foreign related studies, manual off-line testing methods are used, which shows the necessity of developing in-situ testing equipment for bending resistance.
发明内容Contents of the invention
为解决背景技术中现有暂时没有柔性太阳能电池耐弯曲性能在线检测系统，且柔性太阳能电池耐弯曲性能的检测存在操作麻烦，检测不可靠，效率低的问题，本发明提供一种柔性太阳能电池耐弯曲性能检测仪及检测方法。In order to solve the problems that there is currently no online detection system for the bending resistance of flexible solar cells in the background technology, and the detection of the bending resistance of flexible solar cells has troublesome operation, unreliable detection, and low efficiency. Bending property tester and test method.
本发明的技术方案是：一种柔性太阳能电池耐弯曲性能检测仪，包括光电效率转化检测系统、弯曲运动特性控制系统、在线原位检测系统和检测装置，所述的检测装置包括底座、第一平台和第二平台，所述的第一平台和第二平台相互铰接配合，所述的底座上设有驱动件，所述的驱动件设于第一平台和第二平台的下方，所述的驱动件通过传动机构分别与第一平台、第二平台相连接，所述的传动机构包括与驱动件相连接的丝杆，所述的丝杆上设有传动件，所述的传动件与丝杆在竖直方向上滑移配合，所述的传动件上设有多根连杆，所述的连杆分别与第一平台、第二平台相连接并驱动第一平台、第二平台相互转动，所述的第一平台、第二平台具有相互配合呈水平状态便于安放待检测物的第一状态和相互折弯的第二状态。The technical solution of the present invention is: a flexible solar cell bending resistance tester, including a photoelectric efficiency conversion detection system, a bending motion characteristic control system, an online in-situ detection system and a detection device. The detection device includes a base, a first The platform and the second platform, the first platform and the second platform are hinged and matched with each other, the base is provided with a driving member, and the driving member is arranged below the first platform and the second platform, and the described The driving part is respectively connected with the first platform and the second platform through a transmission mechanism. The transmission mechanism includes a screw rod connected with the driving part, and a transmission part is arranged on the screw rod. The rods slide and fit in the vertical direction, and the transmission member is provided with a plurality of connecting rods, and the connecting rods are respectively connected with the first platform and the second platform and drive the first platform and the second platform to rotate with each other , the first platform and the second platform have a first state in which they cooperate with each other to be in a horizontal state, which is convenient for placing the object to be detected, and a second state in which they are bent to each other.
所述的第一平台上设有第一撑桥，所述的第二平台上设有与第一撑桥相适配的第二撑桥，所述的第一撑桥设于第一平台靠近第二平台的一端上，所述的第二撑桥设于第二平台靠近第一平台的一端上。The first support bridge is provided on the first platform, and the second support bridge adapted to the first support bridge is provided on the second platform, and the first support bridge is arranged near the first platform. On one end of the second platform, the second support bridge is arranged on the end of the second platform close to the first platform.
所述的第一平台向上凸起形成所述的第一撑桥，所述的第一撑桥上设有第一斜面和第二斜面。The first platform protrudes upwards to form the first bridge, and the first bridge is provided with a first slope and a second slope.
所述的第一平台、第二平台上设有多个通气孔。The first platform and the second platform are provided with a plurality of ventilation holes.
所述的底座上设有两根平行设置的导轨，所述的传动件与导轨相贴合并与导轨直线滑移配合，所述的第一平台的侧边上设有第一挡板，所述的第二平台的侧边上设有第二挡板，所述的导轨上设有铰接销轴，所述的第一挡板和第二挡板均套设于铰接销轴外并与铰接销轴转动配合。The base is provided with two guide rails arranged in parallel, the transmission part is attached to the guide rails and fitted with the guide rails in a straight line, the side of the first platform is provided with a first baffle plate, and the The side of the second platform is provided with a second baffle, the guide rail is provided with a hinge pin, and the first baffle and the second baffle are sleeved outside the hinge pin and connected to the hinge pin Shaft rotation fit.
所述的传动件上设有凸耳，所述的连杆铰接于凸耳上，所述的第一平台与第二平台相配合形成夹角a,所述的夹角a大于等于45度小于等于180度。Lugs are provided on the transmission member, and the connecting rod is hinged on the lugs. The first platform and the second platform cooperate to form an included angle a, and the included angle a is greater than or equal to 45 degrees and less than It is equal to 180 degrees.
一种柔性太阳能电池耐弯曲性能的检测方法，采用权上述检测仪，其检测步骤包括：①在弯曲角度范围在0~180°之间，每个5°进行一次测试，并计算分析弯曲角度对柔性太阳能电池光电性能的影响；②当弯曲角度为时，有效接收面积/>，其中/>为太阳能电池总面积，通过调节检测仪的结构以及入射光的角度，保证电池弯曲时光源时刻保持直射，此时简化公式为/>=cos(θ/2)；③采用标准太阳能电池，测试不同弯曲角度时的转化效率，通过实验数据对比理论计算值，通过添加修正系数F修改入射角与光照强度关系，并得到/>=Fcos(θ/2)。A method for detecting the bending resistance of a flexible solar cell, using the above-mentioned detector, and the detection steps include: ① When the bending angle ranges from 0 to 180°, perform a test for each 5°, and calculate and analyze the effect of the bending angle on The influence of the photoelectric performance of flexible solar cells; ②When the bending angle is , the effective receiving area/> , where /> is the total area of the solar cell, and by adjusting the structure of the detector and the angle of the incident light, it is ensured that the light source is always direct when the cell is bent, and the simplified formula at this time is /> =cos(θ/2); ③ Using standard solar cells, test the conversion efficiency at different bending angles, compare the theoretical calculation values with experimental data, modify the relationship between incident angle and light intensity by adding a correction factor F , and get /> = F cos(θ/2).
电池光电转化效率通过公式获得，其中通过测试电池的I-V特性曲线，得出电池最大输出功率/>；/>取标准光强/>= 100mW/cm²；/>为太阳能电池总面积。The photoelectric conversion efficiency of the battery is calculated by the formula Obtained, wherein the maximum output power of the battery is obtained by testing the IV characteristic curve of the battery /> ;/> Take the standard light intensity /> = 100mW/cm²; /> is the total area of the solar cell.
一种柔性太阳能电池疲劳寿命的检测方法，采用上述检测仪，其检测步骤包括:①检测装置可设置弯曲角度，实现柔性太阳能电池的自动弯曲和复原，这一过程可重复循环进行；②弯曲循环过程中，在线原位检测系统采集输出电压值，直至电池性能明显下降；③每次设置不同的弯曲角度，得到电池的弯曲角度-弯曲次数关系，并生成回归曲线，即得到柔性太阳能电池的弯曲疲劳寿命曲线；④分析多次测量的数据，设置电池性能衰减的弯曲角度和次数临界值，建立电池耐弯曲性临界值数据库，从而建立电池性能衰减数据模型。A method for detecting the fatigue life of a flexible solar cell, using the detector, the detection steps comprising: 1. the detection device can set the bending angle to realize automatic bending and recovery of the flexible solar cell, and this process can be repeated in a cycle; 2. the bending cycle During the process, the online in-situ detection system collects the output voltage value until the performance of the battery drops significantly; ③ different bending angles are set each time to obtain the relationship between the bending angle of the battery and the number of times of bending, and a regression curve is generated, that is, the bending angle of the flexible solar cell is obtained. Fatigue life curve; ④Analyze the data of multiple measurements, set the bending angle and the critical value of the battery performance attenuation, and establish the battery bending resistance critical value database, so as to establish the battery performance attenuation data model.
在不同弯曲角度条件下，设置每弯曲N0次测试一次太阳能电池的I-V特性，得出电池最大输出功率；/>取标准光强/>= 100mW/cm²；；通过公式得出电池光电转化效率，其中/>为太阳能电池总面积，根据电池的转化效率绘制转化效率随弯曲次数的衰减曲线，并判定当转化效率不足最小设定值时，则认定电池性能明显下降，电池失效；测定不同角度下，太阳能电池的弯曲次数极限，可最终输出太阳能电池的弯曲疲劳寿命，预测柔性太阳能电池在不同工作环境下的使用寿命。Under the condition of different bending angles, set the IV characteristics of the solar cell for each bending N 0 times, and obtain the maximum output power of the battery ;/> Take the standard light intensity /> = 100mW/cm²;; get the photoelectric conversion efficiency of the battery through the formula , where /> is the total area of the solar cell, draw the attenuation curve of the conversion efficiency with the number of bending times according to the conversion efficiency of the battery, and determine that when the conversion efficiency is lower than the minimum set value, it is determined that the performance of the battery is obviously reduced, and the battery is invalid; The limit of bending times can finally output the bending fatigue life of the solar cell, and predict the service life of the flexible solar cell in different working environments.
本发明的有益效果是，通过一个驱动件就能可靠的驱动第一平台和第二平台相互转动，驱动件设于平台的下方，且通过连杆对平台进行顶拉，使得第一平台和第二平台可靠的同步转动，传动件竖直运动，传动件的运动方向与平台的转动方向不同，在实际过程中不会产生干涉，影响平台的转动，且驱动件及传动件均设于平台下方，便于其他检测设备的安装、观察、控制，能满足检测所需的弯曲次数与角度。The beneficial effect of the present invention is that the mutual rotation of the first platform and the second platform can be reliably driven by a driving member, the driving member is arranged below the platform, and the platform is pulled up by the connecting rod, so that the first platform and the second platform The two platforms rotate reliably synchronously, the transmission parts move vertically, and the movement direction of the transmission parts is different from the rotation direction of the platform. In the actual process, there will be no interference and affect the rotation of the platform, and the driving parts and transmission parts are located under the platform. , which is convenient for the installation, observation and control of other testing equipment, and can meet the bending times and angles required for testing.
附图说明Description of drawings
附图1为本发明实施例的结构原理图。Accompanying drawing 1 is the structural principle diagram of the embodiment of the present invention.
附图2为本发明实施例检测装置中的第一平台、第二平台处于第一状态时的的结构示意图。Figure 2 is a schematic structural diagram of the first platform and the second platform in the first state of the detection device according to the embodiment of the present invention.
附图3为本发明实施例检测装置中的第一平台、第二平台处于第二状态时的结构示意图。Figure 3 is a schematic structural view of the first platform and the second platform in the second state of the detection device according to the embodiment of the present invention.
附图4为附图3另一方向的结构示意图。Accompanying drawing 4 is the structural diagram of another direction of accompanying drawing 3.
附图5为本发明中第一、二平台形成的角度与驱动件的关系表。Accompanying drawing 5 is the relationship table between the angles formed by the first and second platforms and the driving parts in the present invention.
图中，1、底座；2、第一平台；21、第一压板；211、通孔；22、第一撑桥；221、第一斜面；222、第二斜面；23、第一挡板；3、第二平台；31、第二压板；32、第二撑桥；33、第二挡板；4、驱动件；5、传动机构；51、丝杆；52、传动件；521、凸耳；53、连杆；6、通气孔；7、导轨；71、铰接销轴。In the figure, 1, the base; 2, the first platform; 21, the first pressure plate; 211, the through hole; 22, the first bridge; 221, the first slope; 222, the second slope; 23, the first baffle; 3. The second platform; 31. The second pressure plate; 32. The second bridge; 33. The second baffle; 4. The driving part; 5. The transmission mechanism; 51. The screw rod; 52. The transmission part; ; 53, connecting rod; 6, air vent; 7, guide rail; 71, hinge pin.
具体实施方式Detailed ways
下面结合附图对本发明实施例作进一步说明：Embodiments of the present invention will be further described below in conjunction with accompanying drawings:
由图1结合图2-5所示，一种柔性太阳能电池耐弯曲性能检测仪，包括光电效率转化检测系统、弯曲运动特性控制系统、在线原位检测系统和检测装置，所述的检测装置包括底座1、第一平台2和第二平台3，所述的第一平台2和第二平台3相互铰接配合，所述的底座1上设有驱动件4，所述的驱动件4设于第一平台2和第二平台3的下方，所述的驱动件4通过传动机构5分别与第一平台2、第二平台3相连接，所述的传动机构5包括与驱动件4相连接的丝杆51，所述的丝杆51上设有传动件52，所述的传动件52与丝杆51在竖直方向上滑移配合，所述的传动件52上设有多根连杆53，所述的连杆53分别与第一平台2、第二平台3相连接并驱动第一平台2、第二平台3相互转动，所述的第一平台2、第二平台3具有相互配合呈水平状态便于安放待检测物的第一状态和相互折弯的第二状态。本发明通过一个驱动件就能可靠的驱动第一平台和第二平台相互转动，驱动件设于平台的下方，且通过连杆对平台进行顶拉，使得第一平台和第二平台可靠的同步转动，传动件竖直运动，传动件的运动方向与平台的转动方向不同，在实际过程中不会产生干涉，影响平台的转动，且驱动件及传动件均设于平台下方，便于其他检测设备的安装、观察、控制，能满足检测所需的弯曲次数与角度。对柔性电池承受弯曲载荷时性能变化进行时时监测，便于工作人员主观快速判断，实现对柔性太阳能电池的耐弯曲性能定量的评估，实现高效、低成本耐弯曲性检测，提升光伏产业的应用可靠性。本发明可应用于光伏产业柔性太阳能电池的性能检测及质量监督，符合光伏企业的需求，且研究成果具有广泛的应用前景，对促进光伏产业的发展具有重要意义。本发明还具有结构简单，操作方便，动作可靠，使用寿命长、占地面积小等优点。本发明还具有结构简单，操作方便，动作可靠，使用寿命长、占地面积小等优点。As shown in Figure 1 in conjunction with Figures 2-5, a flexible solar cell bending resistance tester includes a photoelectric efficiency conversion detection system, a bending motion characteristic control system, an online in-situ detection system and a detection device, and the detection device includes The base 1, the first platform 2 and the second platform 3, the first platform 2 and the second platform 3 are hinged and matched with each other, the base 1 is provided with a driving member 4, and the driving member 4 is arranged on the second Below the first platform 2 and the second platform 3, the drive member 4 is connected to the first platform 2 and the second platform 3 respectively through the transmission mechanism 5, and the transmission mechanism 5 includes a wire connected to the drive member 4. Rod 51, the screw rod 51 is provided with a transmission member 52, the transmission member 52 is slidingly matched with the screw rod 51 in the vertical direction, and the transmission member 52 is provided with a plurality of connecting rods 53, The connecting rod 53 is respectively connected with the first platform 2 and the second platform 3 and drives the first platform 2 and the second platform 3 to rotate mutually. The state is convenient to place the first state of the object to be detected and the second state of mutual bending. The present invention can reliably drive the first platform and the second platform to rotate mutually through a driving part, the driving part is arranged under the platform, and the platform is pulled up by the connecting rod, so that the first platform and the second platform are reliably synchronized Rotation, the transmission part moves vertically, the movement direction of the transmission part is different from the rotation direction of the platform, and there will be no interference in the actual process, affecting the rotation of the platform, and the drive part and transmission part are located under the platform, which is convenient for other testing equipment The installation, observation and control can meet the bending times and angles required for detection. Real-time monitoring of the performance changes of flexible solar cells when they are subjected to bending loads facilitates quick and subjective judgments by staff, enables quantitative evaluation of the bending resistance of flexible solar cells, realizes high-efficiency, low-cost bending resistance testing, and improves the application reliability of the photovoltaic industry . The invention can be applied to performance detection and quality supervision of flexible solar cells in the photovoltaic industry, meets the needs of photovoltaic enterprises, and the research results have broad application prospects, and are of great significance for promoting the development of the photovoltaic industry. The invention also has the advantages of simple structure, convenient operation, reliable action, long service life and small floor space. The invention also has the advantages of simple structure, convenient operation, reliable action, long service life and small floor space.
所述的第一平台2上设有用于将待检测物压在第一平台2上的第一压板21，所述的第二平台3上设有用于将待检测物压在第二平台3上的第二压板31。压板的设置防止待检测物边缘翘起，影响实验精度。The first platform 2 is provided with a first platen 21 for pressing the substance to be detected on the first platform 2, and the second platform 3 is provided with a plate for pressing the substance to be detected on the second platform 3. The second platen 31. The setting of the pressure plate prevents the edge of the object to be detected from lifting, which affects the accuracy of the experiment.
所述的第一压板21铰接在第一平台2，所述的第一压板21上设有便于第一压板21相对第一平台2转动的通孔211。通孔的设置便于工作人员手指或工具插入转动压板，同时可以压在待检测物边缘，放在其边缘翘起，通孔的设置减少压板与待检测物的接触面积，避免损伤待检测物。具体的说，第二压板的结构与第一压板的结构相同或相类似，这样使得压板生产、加工、装配等均比较方便，生产效率高。The first pressing plate 21 is hinged to the first platform 2 , and the first pressing plate 21 is provided with a through hole 211 to facilitate the rotation of the first pressing plate 21 relative to the first platform 2 . The setting of the through hole is convenient for the staff to insert and rotate the pressure plate with fingers or tools. At the same time, it can be pressed on the edge of the object to be detected, and it will be lifted when placed on the edge. The setting of the through hole reduces the contact area between the pressure plate and the object to be detected and avoids damage to the object to be detected. Specifically, the structure of the second pressing plate is the same or similar to that of the first pressing plate, which makes the production, processing and assembly of the pressing plate more convenient and the production efficiency is high.
所述的第一压板21有两个，所述的第二压板31有两个，两个第一压板21设于第一平台2远离第二平台3的一端上，两个第二压板31设于第二平台3远离第一平台2的一端上。这样的结构可以将压板的四角设置在平台的四角，从而避免工作中待检测物边缘巧起。There are two first pressing plates 21, and two second pressing plates 31, the two first pressing plates 21 are arranged on the end of the first platform 2 away from the second platform 3, and the two second pressing plates 31 are arranged On the end of the second platform 3 away from the first platform 2 . With such a structure, the four corners of the pressing plate can be arranged on the four corners of the platform, thereby avoiding accidental lifting of the edge of the object to be detected during work.
所述的第一平台2上设有第一撑桥22，所述的第二平台3上设有与第一撑桥22相适配的第二撑桥32，所述的第一撑桥22设于第一平台2靠近第二平台3的一端上，所述的第二撑桥32设于第二平台3靠近第一平台2的一端上。撑桥的设置能防止待检测物在弯曲过程中交界处发生锐化，保证材料不被破坏，从而使得产品检测可靠。具体的说，所述的第一平台2向上凸起形成所述的第一撑桥22，所述的第一撑桥22上设有第一斜面221和第二斜面222。更具体的说，所述的第二撑桥的结构与第一撑桥的结构相同或相类似，这样使得撑桥生产、加工、装配等均比较方便，生产效率高，避免材料损耗。The first platform 2 is provided with a first bridge 22, the second platform 3 is provided with a second bridge 32 compatible with the first bridge 22, and the first bridge 22 is The second support bridge 32 is arranged on the end of the second platform 3 close to the first platform 2 . The setting of the supporting bridge can prevent the sharpening of the junction of the object to be detected during the bending process, and ensure that the material is not damaged, so that the product detection is reliable. Specifically, the first platform 2 protrudes upwards to form the first support bridge 22 , and the first support bridge 22 is provided with a first slope 221 and a second slope 222 . More specifically, the structure of the second supporting bridge is the same or similar to that of the first supporting bridge, so that the production, processing and assembly of the supporting bridge are relatively convenient, the production efficiency is high, and material loss is avoided.
所述的第一平台2、第二平台3上设有多个通气孔6。通气孔的设置对材料中部位置产生吸力，使材料紧贴平台，提高实验的精度。The first platform 2 and the second platform 3 are provided with a plurality of ventilation holes 6 . The air hole is set to generate suction to the middle of the material, making the material close to the platform and improving the accuracy of the experiment.
所述的底座1上设有两根平行设置的导轨7，所述的传动件52与导轨7相贴合并与导轨7直线滑移配合。导轨的设置可以保证传动件可靠平稳上下滑移，从而可靠的通过连杆带动第一、二平台同步转动。当然在实际工作过程中也可以只使一个平台转动。The base 1 is provided with two guide rails 7 arranged in parallel, and the transmission member 52 is attached to the guide rails 7 and linearly slides and fits with the guide rails 7 . The setting of the guide rail can ensure that the transmission part slides up and down reliably and stably, so that the first and second platforms can be reliably driven to rotate synchronously through the connecting rod. Of course, only one platform can be rotated in the actual working process.
所述的第一平台2的侧边上设有第一挡板23，所述的第二平台3的侧边上设有第二挡板33，所述的导轨7上设有铰接销轴71，所述的第一挡板23和第二挡板33均套设于铰接销轴71外并与铰接销轴71转动配合。每个平台的两侧均设有挡板，即挡板能与平台形成限位槽，待检测的物料放入限位槽内，挡板能对其进行水平限位。当然在实际工作过程中，压板所在的铰接轴可以和挡板配合形成对待检测物料的水平限位。The side of the first platform 2 is provided with a first baffle 23, the side of the second platform 3 is provided with a second baffle 33, and the guide rail 7 is provided with a hinge pin 71 , the first baffle plate 23 and the second baffle plate 33 are sleeved outside the hinge pin shaft 71 and rotatably matched with the hinge pin shaft 71 . There are baffles on both sides of each platform, that is, the baffles can form a limit groove with the platform, and the materials to be tested are placed in the limit grooves, and the baffles can limit them horizontally. Of course, in the actual working process, the hinge shaft where the pressing plate is located can cooperate with the baffle to form a horizontal limit for the material to be detected.
所述的传动件52上设有凸耳521，所述的连杆53铰接于凸耳521上，所述的第一平台2与第二平台3相配合形成夹角a,所述的夹角a大于等于45度小于等于180度。凸耳的设置便于连杆的安装固定，且连杆转动可靠。The transmission member 52 is provided with a lug 521, the connecting rod 53 is hinged on the lug 521, the first platform 2 and the second platform 3 cooperate to form an angle a, and the angle a is greater than or equal to 45 degrees and less than or equal to 180 degrees. The setting of the lug facilitates the installation and fixing of the connecting rod, and the connecting rod rotates reliably.
附图4中，其中表中的所有数值均为矢量值，所有的矢量均以夹角a等于180度为“0”刻度，向下为负，向上为正。如：表中“差值”中的负值表示垂直向下运动的距离，例如：夹角a等于90度中的-82.18表示驱动件从0刻度向下移动82.18毫米,电机向下转动41.09圈。本发明具体公开了在驱动件运动与平台形成的夹角a之间的关系，从而使得产品能更精确的控制待检测物的弯折，使得产品精度高。In the accompanying drawing 4, all the numerical values in the table are vector values, and all the vectors take the angle a equal to 180 degrees as the "0" scale, negative for downward and positive for upward. For example: the negative value in the "difference" in the table indicates the vertical downward movement distance, for example: the included angle a is equal to -82.18 in 90 degrees, which means that the driving part moves downward from the 0 scale by 82.18 mm, and the motor rotates 41.09 circles downward . The invention specifically discloses the relationship between the movement of the driving member and the angle a formed by the platform, so that the product can more accurately control the bending of the object to be detected, and the product has high precision.
一种柔性太阳能电池耐弯曲性能的检测方法，采用权上述检测仪，其检测步骤包括：①在弯曲角度范围在0~180°之间，每个5°进行一次测试，并计算分析弯曲角度对柔性太阳能电池光电性能的影响；②当弯曲角度为时，有效接收面积/>，其中/>为太阳能电池总面积，通过调节检测仪的结构以及入射光的角度，保证电池弯曲时光源时刻保持直射，此时简化公式为/>=cos(θ/2)；③采用标准太阳能电池，测试不同弯曲角度时的转化效率，通过实验数据对比理论计算值，通过添加修正系数F修改入射角与光照强度关系，并得到/>=Fcos(θ/2)。A method for detecting the bending resistance of a flexible solar cell, using the above-mentioned detector, and the detection steps include: ① When the bending angle ranges from 0 to 180°, perform a test for each 5°, and calculate and analyze the effect of the bending angle on The influence of the photoelectric performance of flexible solar cells; ②When the bending angle is , the effective receiving area/> , where /> is the total area of the solar cell, and by adjusting the structure of the detector and the angle of the incident light, it is ensured that the light source is always direct when the cell is bent, and the simplified formula at this time is /> =cos(θ/2); ③ Using standard solar cells, test the conversion efficiency at different bending angles, compare the theoretical calculation values with experimental data, modify the relationship between incident angle and light intensity by adding a correction factor F , and get /> = F cos(θ/2).
本发明的电池光电转化效率通过公式获得，其中通过测试电池的I-V特性曲线，得出电池最大输出功率/>；/>取标准光强/>= 100mW/cm²；/>为太阳能电池总面积。标准光强是指即AM1.5条件，25℃下，AM即Air Mass是指太阳能光穿过大气层的光学路径，在地球的大气层外, 空气的质量为0,即定义为AM0, 当太阳光与地面成垂直时为1,定义为AM1.0, AM1.5也即指天顶角为48度时的太阳光，100mW/cm²是指地面单位面积接受到的太阳能光能量，25℃是指太阳能电池板的温度。当太阳能电池板的温度升高时,会产生一定的功率减少现象。为评估柔性太阳能电池弯曲时的光电性能参数，采用卤钨灯作为模拟太阳光光源，通过与太阳能电池相连的光电效率转化检测系统测量弯曲状态下太阳能电池的输出电压，实时观测不同弯曲角度下或经多次弯曲后太阳能电池的光电转化效率，利用显微镜实现太阳能电池表面形貌的原位观察。借助于实时数据采集和分析软件平台，进行实验数据处理和分析，建立柔性太阳能电池弯曲角度、重复次数与电池性能的定量关系数学模型，评估柔性太阳能电池质量的可靠性和使用寿命。借助于显微镜观察、实时数据采集和分析软件平台，实现测试结果进行可视化展示。The photoelectric conversion efficiency of the battery of the present invention passes the formula Obtained, wherein the maximum output power of the battery is obtained by testing the IV characteristic curve of the battery /> ;/> Take the standard light intensity /> = 100mW/cm²; /> is the total area of the solar cell. The standard light intensity refers to the condition of AM1.5. At 25°C, AM or Air Mass refers to the optical path of solar light passing through the atmosphere. Outside the earth’s atmosphere, the quality of air is 0, which is defined as AM0. When sunlight When it is perpendicular to the ground, it is 1, defined as AM1.0, AM1.5 refers to the sunlight when the zenith angle is 48 degrees, 100mW/cm² refers to the solar light energy received by the unit area of the ground, and 25°C refers to The temperature of the solar panel. When the temperature of the solar panel increases, there will be a certain power reduction phenomenon. In order to evaluate the photoelectric performance parameters of flexible solar cells when they are bent, a tungsten-halogen lamp is used as a simulated sunlight light source, and the output voltage of the solar cells in the bending state is measured through a photoelectric efficiency conversion detection system connected to the solar cells, and real-time observations are made under different bending angles or The photoelectric conversion efficiency of the solar cell after multiple bending, using a microscope to realize the in-situ observation of the surface morphology of the solar cell. With the help of real-time data acquisition and analysis software platform, experimental data processing and analysis are carried out, and a mathematical model of the quantitative relationship between the bending angle, repetition times and battery performance of flexible solar cells is established to evaluate the reliability and service life of flexible solar cell quality. With the help of microscope observation, real-time data acquisition and analysis software platform, the test results can be visualized and displayed.
一种柔性太阳能电池疲劳寿命的检测方法，采用上述的检测仪，其检测步骤包括:①检测装置可设置弯曲角度，实现柔性太阳能电池的自动弯曲和复原，这一过程可重复循环进行；②弯曲循环过程中，在线原位检测系统采集输出电压值，直至电池性能明显下降；③每次设置不同的弯曲角度，得到电池的弯曲角度-弯曲次数关系，并生成回归曲线，即得到柔性太阳能电池的弯曲疲劳寿命曲线；④分析多次测量的数据，设置电池性能衰减的弯曲角度和次数临界值，建立电池耐弯曲性临界值数据库，从而建立电池性能衰减数据模型。A detection method for the fatigue life of a flexible solar cell, using the above-mentioned detector, the detection steps include: ① the detection device can be set to a bending angle to realize automatic bending and recovery of the flexible solar cell, and this process can be repeated in a cycle; ② bending During the cycle, the online in-situ detection system collects the output voltage value until the performance of the battery drops significantly; ③Set different bending angles each time to obtain the relationship between the bending angle of the battery and the number of times of bending, and generate a regression curve, that is, to obtain the flexible solar cell. Bending fatigue life curve; ④Analyze the data of multiple measurements, set the bending angle and critical value of battery performance attenuation, and establish a battery bending resistance critical value database, thereby establishing a battery performance attenuation data model.
在不同弯曲角度条件下，设置每弯曲N0次测试一次太阳能电池的I-V特性，得出电池最大输出功率；/>取标准光强/>= 100mW/cm²；通过公式得出电池光电转化效率，其中/>为太阳能电池总面积，根据电池的转化效率绘制转化效率随弯曲次数的衰减曲线，并判定当转化效率不足最小设定值时，则认定电池性能明显下降，电池失效；测定不同角度下，太阳能电池的弯曲次数极限，可最终输出太阳能电池的弯曲疲劳寿命，预测柔性太阳能电池在不同工作环境下的使用寿命。测试柔性太阳能电池耐弯曲性能，电池的可弯曲次数是一个重要指标。材料可弯曲次数与弯曲角度存在一定的定量关系，柔性太阳能电池可承受特定角度的弯曲次数，即电池的疲劳寿命。Under the condition of different bending angles, set the IV characteristics of the solar cell for each bending N 0 times, and obtain the maximum output power of the battery ;/> Take the standard light intensity /> = 100mW/cm²; get the photoelectric conversion efficiency of the battery through the formula , where /> is the total area of the solar cell, draw the attenuation curve of the conversion efficiency with the number of bending times according to the conversion efficiency of the battery, and determine that when the conversion efficiency is lower than the minimum set value, it is determined that the performance of the battery is obviously reduced, and the battery is invalid; The limit of bending times can finally output the bending fatigue life of the solar cell, and predict the service life of the flexible solar cell in different working environments. To test the bending resistance of flexible solar cells, the number of times the battery can be bent is an important indicator. There is a certain quantitative relationship between the number of times a material can be bent and the bending angle, and the number of times a flexible solar cell can withstand bending at a specific angle is the fatigue life of the battery.
本检测方法可用于在线原位检测柔性太阳能电池的光电效率和弯曲疲劳寿命，可判定在不同弯曲角度条件下的光电效率，多次弯曲后的光电效率衰减情况，得出柔性太阳能电池的弯曲疲劳寿命，对比目前使用的手动离线方法，此方法可直观、迅速地判断柔性太阳能电池的耐弯曲性能，提高了精度和便捷性，在实际应用中具有较高的可操作性。This detection method can be used for on-line in-situ detection of the photoelectric efficiency and bending fatigue life of flexible solar cells. Compared with the manual offline method currently used, this method can intuitively and quickly judge the bending resistance of flexible solar cells, improves the accuracy and convenience, and has high operability in practical applications.
各位技术人员须知：虽然本发明已按照上述具体实施方式做了描述，但是本发明的发明思想并不仅限于此发明，任何运用本发明思想的改装，都将纳入本专利专利权保护范围内。Notes to all technical personnel: Although the present invention has been described according to the above-mentioned specific embodiments, the inventive idea of the present invention is not limited to this invention, and any modification using the inventive idea will be included in the scope of protection of this patent.
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| CN108988784B (en) * | 2018-03-23 | 2019-11-08 | 常州工学院 | Device and method for research on the influence of bending degree of flexible solar cells on electrical parameters |
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