CN107276532B - Flexible solar cell bending resistance detector and detection method - Google Patents
Flexible solar cell bending resistance detector and detection method Download PDFInfo
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Abstract
A flexible solar cell bending resistance detector and a detection method. The problems of troublesome operation, unreliable detection and low efficiency in the bending resistance detection of the conventional flexible solar cell are solved. The device comprises a base, a first platform and a second platform, wherein a driving piece is arranged on the base and is connected with the first platform and the second platform respectively through a transmission mechanism, the transmission mechanism comprises a screw rod connected with the driving piece, the screw rod is provided with the transmission piece, the transmission piece is provided with a plurality of connecting rods, and the connecting rods are connected with the first platform and the second platform respectively and drive the first platform and the second platform to rotate mutually. The detection method is realized by the cooperation of a photoelectric efficiency conversion detection system, a bending motion characteristic control system, an online in-situ detection system and a detection device. The invention also has the advantages of simple structure, convenient operation, reliable action, long service life, small occupied area and the like.
Description
Technical Field
The invention relates to a detection system, in particular to a flexible solar cell bending resistance detector and a detection method.
Background
Flexible solar cells generally refer to flexible thin film solar cells fabricated on flexible materials (stainless steel, polymers, etc.). The traditional crystalline silicon solar cell occupies the main market flow, but the application field is limited due to the large weight, inflexibility and inconvenient installation and transportation; the flexible solar cell overcomes the defects, has the advantages of light weight, thin thickness, convenient transportation and the like, has higher bending capability, and can be installed and used on roads, building outer walls and the like.
Flexible solar cells are often stored in a rolled fashion, and are also often in a curved state during use. However, when the flexible solar cell is bent at a large angle or even curled and twisted, the photoelectric performance of the flexible cell is affected, and repeated bending and twisting also can significantly affect the service life of the flexible solar cell.
For flexible solar cells, the influence of bending conditions on photoelectric conversion performance is one of the key factors of the quality and reliability of flexible solar cell products. At present, only a small amount of researches and reports on bending resistance test of the flexible solar cell directly show that the photoelectric performance of the cell is obviously reduced along with the increase of bending times and angles. However, the whole test process is completely positioned by manual operation, and the precision cannot be controlled; and repeated bending cycles are manually performed in the test, so that the repeated positioning accuracy cannot be ensured, and time and physical strength are greatly consumed.
In related research at home and abroad, due to lack of easy-to-operate bending resistance testing equipment, a manual off-line testing method is used, which shows the necessity of developing a bending resistance in-situ detection instrument.
Disclosure of Invention
The invention provides a flexible solar cell bending resistance detector and a detection method, and aims to solve the problems that an existing online detection system for the bending resistance of a flexible solar cell is temporarily unavailable, the flexible solar cell bending resistance is troublesome to detect, the detection is unreliable and the efficiency is low in the background art.
The technical scheme of the invention is as follows: the utility model provides a flexible solar cell bending resistance performance detector, includes photoelectric efficiency conversion detecting system, crooked motion characteristic control system, online normal position detecting system and detection device, detection device include base, first platform and second platform articulated cooperation each other, the base on be equipped with the driving piece, the driving piece locate the below of first platform and second platform, the driving piece be connected with first platform, second platform respectively through drive mechanism, drive mechanism include the lead screw that is connected with the driving piece, the lead screw on be equipped with the driving piece, driving piece and lead screw slide the cooperation in vertical direction, the driving piece on be equipped with many connecting rods, the connecting rod be connected and drive first platform, second platform mutually support with first platform, second platform have mutually supporting and be the first state and the mutual second state of bending of the level state of being convenient for lay the thing of waiting to detect respectively.
The first platform on be equipped with first bridge, the second platform on be equipped with first bridge looks adaptation's second bridge that props, first bridge locate on the one end that first platform is close to the second platform, the second bridge locate on the one end that the second platform is close to first platform.
The first platform protrudes upwards to form the first supporting bridge, and a first inclined plane and a second inclined plane are arranged on the first supporting bridge.
The first platform and the second platform are provided with a plurality of vent holes.
The base on be equipped with two parallel arrangement's guide rail, the driving medium paste mutually and with guide rail straight line sliding cooperation, the side of first platform on be equipped with first baffle, the side of second platform on be equipped with the second baffle, the guide rail on be equipped with the hinge pin axle, first baffle and second baffle all overlap and locate outside the hinge pin axle and with hinge pin axle normal running fit.
The transmission piece on be equipped with the lug, the connecting rod articulated on the lug, first platform and second platform cooperate and form contained angle a, contained angle a be greater than or equal to 45 degrees and be less than or equal to 180 degrees.
The method for detecting the bending resistance of the flexible solar cell adopts the detector, and comprises the following detection steps: (1) testing at each 5 degrees in the bending angle range of 0-180 degrees, and calculating and analyzing the influence of the bending angle on the photoelectric performance of the flexible solar cell; (2) when the bending angle isEffective receiving area->Wherein->The total area of the solar battery is ensured to keep direct irradiation of the light source at all times when the battery is bent by adjusting the structure of the detector and the angle of incident light, and the simplified formula is +.>Cos (θ/2); (3) the conversion efficiency at different bending angles is tested by adopting a standard solar cell, theoretical calculated values are compared through experimental data, and correction coefficients are addedFModifying the relation between the incident angle and the illumination intensity and obtaining +.>=Fcos(θ/2)。
The photoelectric conversion efficiency of the battery is calculated by the formulaObtained by testing the I-V characteristic curve of the battery, the maximum output power of the battery is obtained>；/>Taking standard light intensity +.>= 100mW/cm²；/>Is the total area of the solar cell.
The detection method for the fatigue life of the flexible solar cell adopts the detector, and the detection steps comprise (1) the detection device can set a bending angle to realize the automatic bending and recovery of the flexible solar cell, and the process can be repeatedly and circularly carried out; (2) in the bending cycle process, the online in-situ detection system collects output voltage values until the battery performance is obviously reduced; (3) setting different bending angles each time to obtain a bending angle-bending times relation of the battery, and generating a regression curve to obtain a bending fatigue life curve of the flexible solar battery; (4) and analyzing the data of the multiple measurements, setting the bending angle and the frequency critical value of the battery performance attenuation, and establishing a battery bending resistance critical value database, thereby establishing a battery performance attenuation data model.
Setting N per bending under different bending angles 0 I-V characteristics of the primary solar cell are tested again to obtain the maximum output power of the cell；/>Taking standard light intensity +.>=100 mW/cm; the method comprises the steps of carrying out a first treatment on the surface of the Obtaining the photoelectric conversion efficiency of the battery through a formulaWherein->Drawing a decay curve of the conversion efficiency along with the bending times according to the conversion efficiency of the solar cell for the total area of the solar cell, and judging that the performance of the cell is obviously reduced and the cell fails when the conversion efficiency is lower than a minimum set value; and under different angles, the bending frequency limit of the solar cell is measured, the bending fatigue life of the solar cell can be finally output, and the service life of the flexible solar cell under different working environments is predicted.
The invention has the advantages that the first platform and the second platform can be reliably driven to rotate by one driving piece, the driving piece is arranged below the platform, and the platform is jacked and pulled by the connecting rod, so that the first platform and the second platform can reliably and synchronously rotate, the driving piece vertically moves, the moving direction of the driving piece is different from the rotating direction of the platform, interference can not be generated in the actual process, the rotation of the platform is influenced, and the driving piece are arranged below the platform, thereby being convenient for the installation, observation and control of other detection equipment and being capable of meeting the bending times and angles required by detection.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a first platform and a second platform in the detection device according to the embodiment of the present invention when the first platform and the second platform are in a first state.
Fig. 3 is a schematic structural diagram of a first platform and a second platform in the detection device according to the embodiment of the present invention when the first platform and the second platform are in a second state.
Fig. 4 is a schematic view of the structure of fig. 3 in another direction.
FIG. 5 is a table showing the relationship between the angle formed by the first and second stages and the driving member according to the present invention.
In the figure, 1, a base; 2. a first platform; 21. a first platen; 211. a through hole; 22. a first bridge; 221. a first inclined surface; 222. a second inclined surface; 23. a first baffle; 3. a second platform; 31. a second pressing plate; 32. a second bridge; 33. a second baffle; 4. a driving member; 5. a transmission mechanism; 51. a screw rod; 52. a transmission member; 521. a lug; 53. a connecting rod; 6. a vent hole; 7. a guide rail; 71. and (5) hinging the pin shaft.
Detailed Description
Embodiments of the invention are further described below with reference to the accompanying drawings:
the flexible solar cell bending resistance detector comprises a photoelectric efficiency conversion detection system, a bending motion characteristic control system, an online in-situ detection system and a detection device, wherein the detection device comprises a base 1, a first platform 2 and a second platform 3, the first platform 2 and the second platform 3 are in hinged fit with each other, a driving piece 4 is arranged on the base 1, the driving piece 4 is arranged below the first platform 2 and the second platform 3, the driving piece 4 is respectively connected with the first platform 2 and the second platform 3 through a transmission mechanism 5, the transmission mechanism 5 comprises a screw rod 51 connected with the driving piece 4, a transmission piece 52 is arranged on the screw rod 51, the transmission piece 52 is in sliding fit with the screw rod 51 in the vertical direction, a plurality of connecting rods 53 are arranged on the transmission piece 52, the connecting rods 53 are respectively connected with the first platform 2 and the second platform 3 and drive the first platform 2 and the second platform 3 to rotate with each other, and the first platform 2 and the second platform 3 are in a state of being convenient to be placed in a state of being mutually matched with each other, and the second platform 3 is in a state of being convenient to bend. The invention can reliably drive the first platform and the second platform to rotate with each other through one driving piece, the driving piece is arranged below the platform, and the platform is jacked and pulled through the connecting rod, so that the first platform and the second platform reliably rotate synchronously, the driving piece moves vertically, the moving direction of the driving piece is different from the rotating direction of the platform, interference can not be generated in the actual process, the rotation of the platform is influenced, and the driving piece are arranged below the platform, thereby being convenient for the installation, observation and control of other detection equipment and meeting the bending times and angles required by detection. The performance change of the flexible battery when bearing bending load is monitored constantly, so that a worker can conveniently and rapidly judge the performance change subjectively, quantitative evaluation of the bending resistance of the flexible solar battery is realized, efficient and low-cost bending resistance detection is realized, and the application reliability of the photovoltaic industry is improved. The invention can be applied to performance detection and quality supervision of the flexible solar cells in the photovoltaic industry, meets the requirements of photovoltaic enterprises, has wide application prospect in research results, and has important significance in promoting the development of the photovoltaic industry. The invention also has the advantages of simple structure, convenient operation, reliable action, long service life, small occupied area and the like. The invention also has the advantages of simple structure, convenient operation, reliable action, long service life, small occupied area and the like.
The first platform 2 is provided with a first pressing plate 21 for pressing the object to be detected on the first platform 2, and the second platform 3 is provided with a second pressing plate 31 for pressing the object to be detected on the second platform 3. The setting of clamp plate prevents to wait to detect the perk of thing edge, influences experimental accuracy.
The first pressing plate 21 is hinged to the first platform 2, and a through hole 211 is formed in the first pressing plate 21 to facilitate rotation of the first pressing plate 21 relative to the first platform 2. The setting of through-hole is convenient for staff's finger or instrument insert and rotates the clamp plate, can press simultaneously and wait to detect the thing edge, puts at its edge perk, and the setting of through-hole reduces the area of contact of clamp plate and waiting to detect the thing, avoids damaging waiting to detect the thing. Specifically, the structure of the second pressing plate is the same as or similar to that of the first pressing plate, so that the pressing plate is convenient to produce, process, assemble and the like, and the production efficiency is high.
The number of the first pressing plates 21 is two, the number of the second pressing plates 31 is two, the two first pressing plates 21 are arranged at one end of the first platform 2 far away from the second platform 3, and the two second pressing plates 31 are arranged at one end of the second platform 3 far away from the first platform 2. The structure can set four corners of the pressing plate at four corners of the platform, so that the edge of an object to be detected is prevented from being skillfully lifted in work.
The first platform 2 on be equipped with first bridge 22, the second platform 3 on be equipped with first bridge 22 looks adaptation second bridge 32, first bridge 22 locate on the one end that first platform 2 is close to second platform 3, second bridge 32 locate on the one end that second platform 3 is close to first platform 2. The setting of propping the bridge can prevent that the thing of waiting to detect from taking place to sharpen at crooked in-process juncture, guarantees that the material is not destroyed to make the product detect reliably. Specifically, the first platform 2 protrudes upwards to form the first supporting bridge 22, and a first inclined plane 221 and a second inclined plane 222 are disposed on the first supporting bridge 22. More specifically, the structure of the second supporting bridge is the same as or similar to that of the first supporting bridge, so that the supporting bridge is convenient to produce, process, assemble and the like, the production efficiency is high, and the material loss is avoided.
The first platform 2 and the second platform 3 are provided with a plurality of vent holes 6. The arrangement of the vent holes generates suction force to the middle position of the material, so that the material clings to the platform, and the experimental precision is improved.
The base 1 is provided with two parallel guide rails 7, and the transmission piece 52 is attached to the guide rails 7 and is in linear sliding fit with the guide rails 7. The arrangement of the guide rail can ensure that the transmission piece reliably and stably slides up and down, so that the first platform and the second platform are reliably driven to synchronously rotate through the connecting rod. Of course, only one platform may be rotated during actual operation.
The side of the first platform 2 is provided with a first baffle plate 23, the side of the second platform 3 is provided with a second baffle plate 33, the guide rail 7 is provided with a hinge pin 71, and the first baffle plate 23 and the second baffle plate 33 are sleeved outside the hinge pin 71 and are in running fit with the hinge pin 71. Both sides of every platform all are equipped with the baffle, and the baffle can form the spacing inslot with the platform promptly, and the material that waits to detect is put into the spacing inslot, and the baffle can carry out the level spacing to it. Of course, in the actual working process, the hinge shaft where the pressing plate is located can be matched with the baffle plate to form horizontal limit of the material to be detected.
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 included angle a, and the included angle a is greater than or equal to 45 degrees and less than or equal to 180 degrees. The lug is arranged to facilitate the installation and fixation of the connecting rod, and the connecting rod is reliable in rotation.
In fig. 4, all the values in the table are vector values, and all the vectors are scaled with an included angle a equal to 180 degrees being "0", negative downward and positive upward. Such as: negative values in the table "difference" indicate the distance of vertical downward movement, for example: the angle a being equal to-82.18 in 90 degrees indicates that the drive member is moved down 82.18 mm from the 0 scale and the motor is rotated down 41.09 turns. The invention particularly discloses a relation between an included angle a formed by the movement of a driving piece and a platform, so that a product can more accurately control the bending of an object to be detected, and the product has high precision.
The method for detecting the bending resistance of the flexible solar cell adopts the detector, and comprises the following detection steps: (1) testing at each 5 degrees in the bending angle range of 0-180 degrees, and calculating and analyzing the influence of the bending angle on the photoelectric performance of the flexible solar cell; (2) when the bending angle isEffective receiving area->Wherein->The total area of the solar battery is ensured to keep direct irradiation of the light source at all times when the battery is bent by adjusting the structure of the detector and the angle of incident light, and the simplified formula is +.>Cos (θ/2); (3) the conversion efficiency at different bending angles is tested by adopting a standard solar cell, theoretical calculated values are compared through experimental data, and correction coefficients are addedFModifying the relation between the incident angle and the illumination intensity and obtaining +.>=Fcos(θ/2)。
The photoelectric conversion efficiency of the battery of the invention is calculated by the formulaObtained by testing the I-V characteristic curve of the battery, the maximum output power of the battery is obtained>；/>Taking standard light intensity +.>= 100mW/cm²；/>Is the total area of the solar cell. The standard light intensity refers to the condition of AM1.5, AM refers to the optical path of solar light passing through the atmosphere at 25 ℃, the Mass of Air outside the atmosphere of the earth is 0, namely defined as AM0, when sunlight is vertical to the ground, is defined as AM1.0, AM1.5 refers to sunlight at the zenith angle of 48 degrees, and 100mW/cm refers to the received sunlight in the unit area of the groundSolar light energy, 25 ℃ refers to the temperature of the solar panel. When the temperature of the solar panel increases, a certain power reduction phenomenon occurs. In order to evaluate the photoelectric performance parameters of the flexible solar cell during bending, a halogen tungsten lamp is used as a simulated sunlight light source, the output voltage of the solar cell in a bending state is measured through a photoelectric efficiency conversion detection system connected with the solar cell, the photoelectric conversion efficiency of the solar cell under different bending angles or after multiple bending is observed in real time, and the in-situ observation of the surface morphology of the solar cell is realized by using a microscope. And carrying out experimental data processing and analysis by means of a real-time data acquisition and analysis software platform, establishing a quantitative relation mathematical model of the bending angle, the repetition number and the battery performance of the flexible solar battery, and evaluating the reliability and the service life of the quality of the flexible solar battery. And realizing visual display of the test result by means of a microscope observation, real-time data acquisition and analysis software platform.
The detection method for the fatigue life of the flexible solar cell adopts the detector, and the detection steps comprise (1) the detection device can set a bending angle to realize the automatic bending and recovery of the flexible solar cell, and the process can be repeatedly and circularly carried out; (2) in the bending cycle process, the online in-situ detection system collects output voltage values until the battery performance is obviously reduced; (3) setting different bending angles each time to obtain a bending angle-bending times relation of the battery, and generating a regression curve to obtain a bending fatigue life curve of the flexible solar battery; (4) and analyzing the data of the multiple measurements, setting the bending angle and the frequency critical value of the battery performance attenuation, and establishing a battery bending resistance critical value database, thereby establishing a battery performance attenuation data model.
Setting N per bending under different bending angles 0 I-V characteristics of the primary solar cell are tested again to obtain the maximum output power of the cell；/>Taking standard light intensity +.>=100 mW/cm; obtaining the photoelectric conversion efficiency of the battery through a formulaWherein->Drawing a decay curve of the conversion efficiency along with the bending times according to the conversion efficiency of the solar cell for the total area of the solar cell, and judging that the performance of the cell is obviously reduced and the cell fails when the conversion efficiency is lower than a minimum set value; and under different angles, the bending frequency limit of the solar cell is measured, the bending fatigue life of the solar cell can be finally output, and the service life of the flexible solar cell under different working environments is predicted. The bending resistance of the flexible solar cell is tested, and the bending frequency of the cell is an important index. The bending times of the material and the bending angle have a certain quantitative relation, and the flexible solar cell can bear the bending times of a specific angle, namely the fatigue life of the cell.
The detection method can be used for detecting the photoelectric efficiency and the bending fatigue life of the flexible solar cell in situ on line, can determine the photoelectric efficiency under different bending angles, and obtains the bending fatigue life of the flexible solar cell after multiple bending, compared with the manual off-line method used at present, the method can intuitively and rapidly determine the bending resistance of the flexible solar cell, improves the precision and the convenience, and has higher operability in practical application.
The skilled person will know: while the invention has been described in terms of the foregoing embodiments, the inventive concepts are not limited to the invention, and any modifications that use the inventive concepts are intended to be within the scope of the appended claims.
Claims (8)
1. Method for detecting bending resistance of flexible solar cellThe method is characterized in that: adopt flexible solar cell bending resistance performance detector, flexible solar cell bending resistance performance detector including photoelectric efficiency conversion detecting system, bending motion characteristic control system, online normal position detecting system and detection device, detection device include base (1), first platform (2) and second platform (3) articulated cooperation each other, base (1) on be equipped with driving piece (4), driving piece (4) locate the below of first platform (2) and second platform (3), driving piece (4) be connected with first platform (2) respectively, second platform (3) through drive mechanism (5), drive mechanism (5) include lead screw (51) that are connected with driving piece (4), lead screw (51) on be equipped with driving piece (52), driving piece (52) and lead screw (51) slide the cooperation in vertical direction each other, driving piece (52) on be equipped with many (53), connecting rod (53) and second platform (2) are connected with first platform (3) respectively, second platform (2), second platform (3) are connected with each other The second platform (3) is provided with a first state and a second state, wherein the first state and the second state are mutually matched to form a horizontal state so as to be convenient for placing an object to be detected, and the detection steps comprise: (1) testing at intervals of 5 degrees in the bending angle range of 0-180 degrees, and calculating and analyzing the influence of the bending angle on the photoelectric performance of the flexible solar cell; (2) when the bending angle isEffective receiving area->Wherein->The total area of the solar battery is ensured to keep direct irradiation of the light source at all times when the battery is bent by adjusting the structure of the detector and the angle of incident light, and the simplified formula is +.>Cos (θ/2); (3) the conversion efficiency at different bending angles is tested by adopting a standard solar cell, theoretical calculated values are compared through experimental data, and correction coefficients are addedFModifying the relation between the incident angle and the illumination intensity and obtaining +.>=Fcos (θ/2), cell photoelectric conversion efficiency is expressed by the formula +.>Obtaining the maximum output power of the battery by testing the I-V characteristic curve of the battery；/>Taking standard light intensity +.>=100mW/cm²；/>Is the total area of the solar cell.
2. The method for detecting the bending resistance of the flexible solar cell according to claim 1, wherein the first platform (2) is provided with a first supporting bridge (22), the second platform (3) is provided with a second supporting bridge (32) matched with the first supporting bridge (22), the first supporting bridge (22) is arranged at one end, close to the second platform (3), of the first platform (2), and the second supporting bridge (32) is arranged at one end, close to the first platform (2), of the second platform (3).
3. The method for detecting the bending resistance of the flexible solar cell according to claim 2, wherein the first platform (2) protrudes upwards to form the first supporting bridge (22), and a first inclined plane (221) and a second inclined plane (222) are arranged on the first supporting bridge (22).
4. The method for detecting the bending resistance of the flexible solar cell according to claim 1, wherein the first platform (2) and the second platform (3) are provided with a plurality of vent holes (6).
5. The method for detecting the bending resistance of the flexible solar cell according to claim 1, wherein the base (1) is provided with two parallel guide rails (7), the transmission piece (52) is adhered to the guide rails (7) and is in linear sliding fit with the guide rails (7), the side edge of the first platform (2) is provided with a first baffle (23), the side edge of the second platform (3) is provided with a second baffle (33), the guide rails (7) are provided with hinge pins (71), and the first baffle (23) and the second baffle (33) are sleeved outside the hinge pins (71) and are in running fit with the hinge pins (71).
6. The method for detecting the bending resistance of the flexible solar cell according to claim 1, wherein the transmission member (52) is provided with a lug (521), the connecting rod (53) is hinged to the lug (521), the first platform (2) and the second platform (3) are matched to form an included angle a, and the included angle a is greater than or equal to 45 degrees and less than or equal to 180 degrees.
7. A method for detecting fatigue life of a flexible solar cell is characterized by comprising the following steps: the method for detecting the bending resistance of the flexible solar cell according to any one of claims 1 to 6 comprises the steps of (1) setting a bending angle of a detection device to realize automatic bending and recovery of the flexible solar cell, wherein the process can be repeatedly and circularly carried out; (2) in the bending cycle process, the online in-situ detection system collects output voltage values until the battery performance is obviously reduced; (3) setting different bending angles each time to obtain a bending angle-bending times relation of the battery, and generating a regression curve to obtain a bending fatigue life curve of the flexible solar battery; (4) and analyzing the data of the multiple measurements, setting the bending angle and the frequency critical value of the battery performance attenuation, and establishing a battery bending resistance critical value database, thereby establishing a battery performance attenuation data model.
8. The method for detecting the fatigue life of a flexible solar cell according to claim 7, wherein N per bending is set under different bending angles 0 I-V characteristics of the primary solar cell are tested again to obtain the maximum output power of the cell；/>Taking standard light intensity +.>=100 mW/cm; obtaining the photoelectric conversion efficiency of the battery through a formulaWherein->Drawing a decay curve of the conversion efficiency along with the bending times according to the conversion efficiency of the solar cell for the total area of the solar cell, and judging that the performance of the cell is obviously reduced and the cell fails when the conversion efficiency is lower than a minimum set value; and under different angles, the bending frequency limit of the solar cell is measured, the bending fatigue life of the solar cell can be finally output, and the service life of the flexible solar cell under different working environments is predicted.
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| CN108988784B (en) * | 2018-03-23 | 2019-11-08 | 常州工学院 | Flexible solar battery curvature influences research device and method to electric parameter |
| CN109142112A (en) * | 2018-08-31 | 2019-01-04 | 北京玛尔斯精密设备有限公司 | A kind of flexible material bending test apparatus |
| CN110729966B (en) * | 2019-10-22 | 2021-05-11 | 嘉兴学院 | Device for testing performance of solar cell |
| CN111211063B (en) * | 2020-01-13 | 2023-04-25 | 安徽工业大学 | Experimental device for be used for testing flexible solar cell photoelectric characteristic |
| CN112557299B (en) * | 2020-11-19 | 2023-03-10 | 河北光兴半导体技术有限公司 | Composite board bonding strength detection device and detection method |
| CN113223980B (en) * | 2021-05-11 | 2024-03-01 | 上海质卫环保科技有限公司 | Automatic testing device for bending performance of solar cell |
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