CN114157238A - Novel EL testing device and testing method thereof - Google Patents
Novel EL testing device and testing method thereof Download PDFInfo
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- CN114157238A CN114157238A CN202111535028.1A CN202111535028A CN114157238A CN 114157238 A CN114157238 A CN 114157238A CN 202111535028 A CN202111535028 A CN 202111535028A CN 114157238 A CN114157238 A CN 114157238A
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- 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
- H02S50/10—Testing of PV devices, e.g. of PV modules or single PV cells
- H02S50/15—Testing of PV devices, e.g. of PV modules or single PV cells using optical means, e.g. using electroluminescence
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- 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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Abstract
The invention discloses a novel EL testing device and a testing method thereof, wherein the novel EL testing device comprises an EL detector and a conveying device, wherein the conveying device is used for conveying a photovoltaic module to be tested; the EL detector comprises a shell, an EL camera and a computer processing system, wherein the EL camera is used for obtaining an EL image of a photovoltaic module to be detected, the EL camera is fixed in the middle of the top end of the shell, and the EL camera is electrically connected with the computer processing system; the top end in the shell is provided with a sliding assembly, the sliding assembly is connected with a plurality of connecting contacts in a sliding manner, and the connecting contacts are arranged corresponding to the junction box leads of the photovoltaic assembly to be tested; and an adjusting component is arranged between every two adjacent connecting contacts and used for adjusting the distance between the two connecting contacts, and the connecting contacts at the two ends of the sliding component are respectively connected with the anode and the cathode of the power supply. When the photovoltaic module to be tested is subjected to EL test, the junction box lead of the photovoltaic module to be tested does not need to be communicated manually, and the EL test efficiency of the photovoltaic module is improved.
Description
Technical Field
The invention relates to the technical field of photovoltaic module defect detection, in particular to a novel EL testing device and a testing method thereof.
Background
The method is characterized in that EL is called Electro Luminescence, namely electroluminescence and electronic Luminescence detection, a near-infrared image of crystalline silicon is shot by utilizing the electroluminescence principle of the crystalline silicon and matching with an infrared camera with high resolution, and the obtained imaging image is analyzed and processed through image software so as to judge the defects of the photovoltaic module. With the increasing of the scale of the photovoltaic industry in China year by year, it is very important to adopt the EL infrared tester to test whether the photovoltaic module is qualified or not in the production process.
However, the size and the model of the photovoltaic module are not consistent, and when the photovoltaic module is subjected to EL test, not only positive and negative terminal box leads at two ends of the photovoltaic module need to be connected with an EL tester, but also terminal box leads at the middle section of the photovoltaic module need to be connected, so that a loop is formed between the photovoltaic modules. The existing processing mode is that workers use metal clamps or other conductive objects to sequentially conduct the junction box lead wires in the middle section, and the mode is too complicated, so that the production efficiency of the photovoltaic module is seriously influenced.
Disclosure of Invention
The present invention is directed to a novel EL testing apparatus and a testing method thereof, which solve the above-mentioned problems of the prior art.
In order to achieve the purpose, the invention provides the following scheme: the invention provides a novel EL testing device, which comprises an EL detector and a conveying device, wherein the conveying device is arranged corresponding to the EL detector and is used for conveying a photovoltaic module to be tested; the EL detector comprises a shell, an EL camera and a computer processing system, wherein the EL camera is used for obtaining an EL image of the photovoltaic module to be detected, the EL camera is fixedly installed in the middle of the top end in the shell, and the EL camera is electrically connected with the computer processing system; an opening is formed in one side of the shell, and the conveying device extends into the shell through the opening; a sliding assembly is fixedly mounted at the top end inside the shell, a plurality of connecting contacts are connected to the sliding assembly in a sliding manner, and the connecting contacts are arranged corresponding to the junction box leads of the photovoltaic assembly to be tested; adjacent two install adjusting part between the connecting contact, adjusting part is used for adjusting two distance between the connecting contact, be located sliding assembly both ends the connecting contact is connected with the positive pole and the negative pole of power respectively.
Preferably, the sliding assembly comprises two transverse sliding rails and two longitudinal sliding rails, the transverse sliding rails are fixedly mounted at the top end inside the shell, the transverse sliding rails are symmetrically arranged on two sides of the EL camera, and the transverse sliding rails are perpendicular to the conveying direction of the conveying device; the longitudinal slide rail is connected to the bottom of the transverse slide rail in a sliding manner, and the longitudinal slide rail is perpendicular to the transverse slide rail; the connecting contacts are connected to the longitudinal slide rail in a sliding mode, the adjusting assembly is installed between every two adjacent connecting contacts on the longitudinal slide rail, and the connecting contacts located at two ends of the longitudinal slide rail are connected with the positive pole and the negative pole of the power supply respectively.
Preferably, two be provided with the connection slide rail between the vertical slide rail, the both ends of connecting the slide rail respectively with two vertical slide rail sliding connection, sliding connection has a plurality of on the connection slide rail connection contact is located connect the slide rail both ends connection contact is connected with the positive pole and the negative pole of power respectively, connect adjacent two on the slide rail install between the connection contact adjusting part.
Preferably, the longitudinal slide rail and the connecting slide rail are both provided with a slide groove, and the connecting contact is respectively connected with the longitudinal slide rail and the connecting slide rail in a sliding manner through the slide grooves; the sliding grooves are formed in two opposite sides of the longitudinal sliding rail, two ends of the connecting sliding rail are connected into the sliding grooves of the longitudinal sliding rail in a sliding mode, and the connecting contact points and the connecting sliding rail on the longitudinal sliding rail are arranged on two sides of the longitudinal sliding rail respectively.
Preferably, the connecting contact comprises an installation sliding plate which is slidably connected in the sliding groove, one side of the installation sliding plate, which is far away from the sliding groove, is fixedly connected with a control box, a fixed end of a telescopic assembly is fixedly connected in the control box, a movable end of the telescopic assembly is fixedly connected with a connecting plate, two ends of the connecting plate are fixedly connected with the top ends of telescopic rods, and the bottom ends of the two telescopic rods are fixedly connected with metal sheets; the telescopic rod is sleeved with a spring, and two ends of the spring are fixedly connected with the connecting plate and the metal sheet respectively.
Preferably, the telescopic assembly is an electric telescopic rod or an air cylinder.
Preferably, the adjusting assembly comprises a telescopic pipe, the telescopic pipe comprises an outer pipe and an inner pipe sleeved in the outer pipe, the inner pipe is in sliding limit fit with the outer pipe, and the outer pipe and the inner pipe are respectively and fixedly connected with two adjacent control boxes; a sliding block is slidably sleeved at one end, close to the inner pipe, of the outer pipe, a motor is fixed in the control box, the outer pipe is fixed in the control box, the output end of the motor is in transmission connection with a screw rod, the screw rod penetrates through the sliding block and is fixedly connected with a baffle, the screw rod is in threaded connection with the sliding block, and the length of the screw rod is the same as that of the outer pipe; the inner pipe is fixed on the outer wall of the control box, a connecting rod is fixedly connected to the outer wall of the control box, and the tail end of the connecting rod is fixedly connected with the sliding block.
Preferably, a positioning cushion pad is fixedly connected to the inner wall of the shell corresponding to the opening, and the positioning cushion pad and the conveying device are arranged correspondingly.
A test method using a novel EL test device specifically comprises the following steps:
a. equipment debugging, namely adjusting the distance between the sliding assemblies and the distance between two adjacent connecting contacts according to the photovoltaic assembly to be tested;
b. positioning the photovoltaic module to be tested, namely transporting the photovoltaic module to be tested into the shell by using a conveying device, enabling the photovoltaic module to be tested to correspond to the EL camera, and enabling a junction box lead of the photovoltaic module to be tested to correspond to the connecting contact;
c. testing, namely connecting all junction box leads on the photovoltaic module to be tested by using the connecting contacts, so that the current output by the power supply forms a complete current loop in the photovoltaic module to be tested, obtaining an EL image of the photovoltaic module to be tested by using an EL camera, and transmitting the obtained EL image information to a computer processing system by using the EL camera for analysis;
d. and obtaining a result, and judging whether a problem exists on a battery piece in the photovoltaic module to be detected or not according to the result obtained by the computer processing system.
The invention discloses the following technical effects: according to the novel EL testing device provided by the invention, when the photovoltaic module to be tested is subjected to EL testing, the junction box lead of the photovoltaic module to be tested is not required to be communicated manually, so that the EL testing efficiency of the photovoltaic module is improved; the novel EL testing device provided by the invention can accurately detect whether the photovoltaic module to be tested placed in the shell has potential defects or not, thereby improving the reliability of the photovoltaic module and avoiding the use of poor photovoltaic modules.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic structural diagram of the novel EL test device of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
the device comprises a conveying device-1, a shell-2, an EL camera-3, a computer processing system-4, a transverse slide rail-5, a longitudinal slide rail-6, a connecting slide rail-7, a chute-8, an installation slide plate-9, a control box-10, a telescopic component-11, a connecting plate-12, a telescopic rod-13, a metal sheet-14, a spring-15, an outer pipe-16, an inner pipe-17, a slide block-18, a motor-19, a screw rod-20, a baffle-21, a connecting rod-22 and a positioning cushion pad-23.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The invention provides a novel EL testing device, which comprises an EL detector and a conveying device 1 arranged corresponding to the EL detector, wherein the conveying device 1 is used for conveying a photovoltaic module to be tested; the EL detector comprises a shell 2, an EL camera 3 and a computer processing system 4, wherein the EL camera 3 is used for obtaining an EL image of a photovoltaic module to be detected, the EL camera 3 is fixedly arranged in the middle of the top end in the shell 2, and the EL camera 3 is electrically connected with the computer processing system 4; an opening is formed in one side of the shell 2, and the conveying device 1 extends into the shell 2 through the opening; a sliding assembly is fixedly installed at the top end inside the shell 2, a plurality of connecting contacts are connected to the sliding assembly in a sliding mode, and the connecting contacts are arranged corresponding to the junction box leads of the photovoltaic assembly to be tested; and an adjusting component is arranged between every two adjacent connecting contacts and used for adjusting the distance between the two connecting contacts, and the connecting contacts at the two ends of the sliding component are respectively connected with the anode and the cathode of the power supply.
Further, in order to meet the requirement of performing an EL test on photovoltaic modules with more sizes, the sliding module comprises two transverse sliding rails 5 and two longitudinal sliding rails 6, the transverse sliding rails 5 are fixedly installed at the top end inside the shell 2, the transverse sliding rails 5 are symmetrically arranged on two sides of the EL camera 3, and the transverse sliding rails 5 are arranged perpendicular to the conveying direction of the conveying device 1; the longitudinal slide rail 6 is connected to the bottom of the transverse slide rail 5 in a sliding manner, and the longitudinal slide rail 6 is perpendicular to the transverse slide rail 5; the connecting contacts are connected to the longitudinal sliding rails 6 in a sliding mode, an adjusting assembly is installed between every two adjacent connecting contacts on the same longitudinal sliding rail 6, and the connecting contacts located at two ends of the longitudinal sliding rails 6 are connected with the positive pole and the negative pole of the power supply respectively. By adjusting the position of the longitudinal slide rail 6 on the transverse slide rail 5, the connecting contact on the longitudinal slide rail 6 can be connected with the junction box leads of the photovoltaic modules to be tested with different sizes.
Further, in order to improve the practicability of the EL tester and enable the EL tester to carry out EL test on photovoltaic modules of different types, a connecting slide rail 7 is arranged between two longitudinal slide rails 6, two ends of the connecting slide rail 7 are respectively connected with the two longitudinal slide rails 6 in a sliding manner, a plurality of connecting contacts are connected on the connecting slide rail 7 in a sliding manner, the connecting contacts at two ends of the connecting slide rail 7 are respectively connected with the anode and the cathode of a power supply, and an adjusting component is installed between two adjacent connecting contacts on the connecting slide rail 7.
Further, in order to realize the interval between two longitudinal slide rails 6 when being equipped with connection slide rail 7 and adjust, fixedly connected with electronic flexible jack catch on 2 inner walls of the shell, when the interval between two longitudinal slide rails 6 is adjusted to needs, utilize electronic flexible jack catch to fix connection slide rail 7 earlier, and control electronic flexible jack catch shrink, make connection slide rail 7 and longitudinal slide rail 6 separation, then can not receive the influence of connecting slide rail 7 adjusting the interval between two longitudinal slide rails 6. In order to ensure that the positions of the longitudinal slide rail 6 and the connecting slide rail 7 are kept stable, positioning bolts are respectively arranged on the longitudinal slide rail 6 and the connecting slide rail 7, and the fixing of the longitudinal slide rail 6 and the transverse slide rail 5 and the fixing of the longitudinal slide rail 6 and the connecting slide rail 7 are realized by the positioning bolts.
Furthermore, in order to facilitate the adjustment of the connecting contact, sliding grooves 8 are formed in the longitudinal sliding rail 6 and the connecting sliding rail 7, and the connecting contact is respectively connected with the longitudinal sliding rail 6 and the connecting sliding rail 7 in a sliding manner through the sliding grooves 8; the two opposite sides of the longitudinal slide rail 6 are provided with sliding grooves 8, the two ends of the connecting slide rail 7 are connected in the sliding grooves 8 of the longitudinal slide rail 6 in a sliding mode, and the connecting contact points on the longitudinal slide rail 6 and the connecting slide rail 7 are arranged on the two sides of the longitudinal slide rail 6 respectively.
Further, the connecting contact comprises an installation sliding plate 9 connected in the sliding groove 8 in a sliding manner, one side, far away from the sliding groove 8, of the installation sliding plate 9 is fixedly connected with a control box 10, a fixed end of a telescopic assembly 11 is fixedly connected in the control box 10, the telescopic assembly 11 can be any one of an electric telescopic rod or an air cylinder, a movable end of the telescopic assembly 11 is fixedly connected with a connecting plate 12, two ends of the connecting plate 12 are fixedly connected with the top ends of telescopic rods 13, and the bottom ends of the two telescopic rods 13 are fixedly connected with metal sheets 14; the telescopic rod 13 is sleeved with a spring 15, and two ends of the spring 15 are respectively fixedly connected with the connecting plate 12 and the metal sheet 14. In order to facilitate the positioning adjustment of the connecting contacts, positioning bolts are arranged on the connecting contacts at one end of the longitudinal slide rail 6 and the mounting sliding plate 9 of the connecting contacts at one end of the connecting slide rail 7, and the mounting sliding plate 9 of the connecting contacts at one end is fixed by the positioning bolts, so that the other connecting contacts can perform position adjustment with reference to the fixed connecting contacts.
Furthermore, in order to conveniently adjust the distance between the two connecting contacts so as to realize automatic control, the adjusting assembly comprises a telescopic pipe, the telescopic pipe comprises an outer pipe 16 and an inner pipe 17 sleeved in the outer pipe 16, the inner pipe 17 is in sliding limit fit with the outer pipe 16, and the outer pipe 16 and the inner pipe 17 are respectively and fixedly connected with the two adjacent control boxes 10; a sliding block 18 is slidably sleeved at one end, close to the inner pipe 17, of the outer pipe 16, a motor 19 is fixed in the control box 10 fixed with the outer pipe 16, the output end of the motor 19 is in transmission connection with a screw rod 20, the screw rod 20 penetrates through the sliding block 18 and is fixedly connected with a baffle 21, the screw rod 20 is in threaded connection with the sliding block 18, and the length of the screw rod 20 is the same as that of the outer pipe 16; the outer wall of the control box 10 fixed with the inner pipe 17 is fixedly connected with a connecting rod 22, and the tail end of the connecting rod 22 is fixedly connected with the sliding block 18. The initial state slider 18 is located at one end of the outer tube 16 close to the inner tube 17, the screw 20 is driven to rotate by the motor 19, the slider 18 is moved towards the motor 19 under the threaded fit of the screw 20 and the slider 18, meanwhile, because the connecting rod 22 is fixed on the slider 18, and the other end of the connecting rod 22 is fixed on the other control box 10, when the slider 18 is moved, the two control boxes 10 are pulled to gradually close under the action of the connecting rod 22, at this time, the inner tube 17 gradually extends into the outer tube 16 until the distance between the two control boxes 10 meets the test requirement, and because the mounting sliding plate 9 at one end is fixed in position, the other mounting sliding plates 9 all move towards the fixed mounting sliding plate 9 in the adjusting process.
Further, for the convenience photovoltaic module that awaits measuring fixes a position to and avoid taking place to damage when awaiting measuring the photovoltaic module location, fixedly connected with location blotter 23 on casing 2 and the corresponding inner wall of opening, location blotter 23 corresponds the setting with conveyor 1. During positioning, only the photovoltaic module to be detected is required to be contacted with the positioning cushion pad 23 on one side under the action of the conveying device 1.
The novel EL testing device provided by the invention comprises the following steps of:
a. equipment debugging, namely adjusting the distance between the sliding assemblies and the distance between two adjacent connecting contacts according to the photovoltaic assembly to be tested;
b. positioning the photovoltaic module to be tested, transporting the photovoltaic module to be tested into the shell 2 by using the conveying device 1, enabling the photovoltaic module to be tested to correspond to the EL camera 3, and enabling a junction box lead of the photovoltaic module to be tested to correspond to the connecting contact;
c. testing is carried out, connecting contacts are utilized to enable all junction box leads on the photovoltaic component to be tested to be communicated, so that current output by a power supply forms a complete current loop in the photovoltaic component to be tested, an EL image of the photovoltaic component to be tested is obtained by the EL camera 3, and the obtained EL image information is transmitted to the computer processing system 4 by the EL camera 3 to be analyzed;
d. and obtaining a result, and judging whether a problem exists on a battery piece in the photovoltaic module to be detected or not according to the result obtained by the computer processing system 4.
According to the novel EL testing device provided by the invention, when the photovoltaic module to be tested is subjected to EL testing, the junction box lead of the photovoltaic module to be tested is not required to be communicated manually, so that the EL testing efficiency of the photovoltaic module is improved; the adjusting process of the connecting contact can be controlled by the controller, and when the controller is used for controlling, the controller is only used for controlling the telescopic assembly 11 and the motor 19 to be started, so that the automatic production of a production line is facilitated; the novel EL testing device provided by the invention can accurately detect whether the photovoltaic module to be tested placed in the shell 2 has potential defects or not, thereby improving the reliability of the photovoltaic module and avoiding the use of poor photovoltaic modules.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (9)
1. The novel EL testing device is characterized by comprising an EL detector and a conveying device (1) arranged corresponding to the EL detector, wherein the conveying device (1) is used for conveying a photovoltaic module to be tested; the EL detector comprises a shell (2), an EL camera (3) and a computer processing system (4), wherein the EL camera (3) is used for obtaining an EL image of the photovoltaic module to be detected, the EL camera (3) is fixedly installed in the middle of the top end in the shell (2), and the EL camera (3) is electrically connected with the computer processing system (4); an opening is formed in one side of the shell (2), and the conveying device (1) extends into the shell (2) through the opening; a sliding assembly is fixedly mounted at the top end inside the shell (2), a plurality of connecting contacts are connected to the sliding assembly in a sliding mode, and the connecting contacts are arranged corresponding to the junction box leads of the photovoltaic assembly to be tested; adjacent two install adjusting part between the connecting contact, adjusting part is used for adjusting two distance between the connecting contact, be located sliding assembly both ends the connecting contact is connected with the positive pole and the negative pole of power respectively.
2. The novel EL testing device as claimed in claim 1, wherein the sliding assembly comprises two transverse sliding rails (5) and two longitudinal sliding rails (6), the transverse sliding rails (5) are fixedly installed at the top end inside the housing (2), the transverse sliding rails (5) are symmetrically arranged on two sides of the EL camera (3), and the transverse sliding rails (5) are arranged perpendicular to the conveying direction of the conveying device (1); the longitudinal slide rail (6) is connected to the bottom of the transverse slide rail (5) in a sliding manner, and the longitudinal slide rail (6) is perpendicular to the transverse slide rail (5); the connecting contacts are connected to the longitudinal sliding rail (6) in a sliding mode, the same connecting contacts are arranged on the longitudinal sliding rail (6) in an adjacent mode, the adjusting assembly is arranged between the connecting contacts, and the connecting contacts located at two ends of the longitudinal sliding rail (6) are connected with the positive pole and the negative pole of the power source respectively.
3. The novel EL testing device according to claim 2, characterized in that a connecting slide rail (7) is arranged between two longitudinal slide rails (6), two ends of the connecting slide rail (7) are respectively connected with the two longitudinal slide rails (6) in a sliding manner, a plurality of connecting contacts are connected on the connecting slide rail (7) in a sliding manner, the connecting contacts at two ends of the connecting slide rail (7) are respectively connected with a positive electrode and a negative electrode of a power supply, and the adjusting assembly is installed between two adjacent connecting contacts on the connecting slide rail (7).
4. The novel EL testing device according to claim 3, wherein sliding grooves (8) are formed in the longitudinal sliding rail (6) and the connecting sliding rail (7), and the connecting contacts are slidably connected with the longitudinal sliding rail (6) and the connecting sliding rail (7) through the sliding grooves (8); the two opposite sides of the longitudinal sliding rail (6) are provided with the sliding grooves (8), two ends of the connecting sliding rail (7) are connected to the sliding grooves (8) of the longitudinal sliding rail (6) in a sliding mode, and the connecting contact points on the longitudinal sliding rail (6) and the connecting sliding rail (7) are arranged on two sides of the longitudinal sliding rail (6) respectively.
5. The novel EL testing device according to claim 4, wherein the connecting contact comprises a mounting sliding plate (9) slidably connected in the sliding groove (8), a control box (10) is fixedly connected to one side of the mounting sliding plate (9) far away from the sliding groove (8), a fixed end of a telescopic component (11) is fixedly connected in the control box (10), a connecting plate (12) is fixedly connected to a movable end of the telescopic component (11), the top ends of telescopic rods (13) are fixedly connected to two ends of the connecting plate (12), and metal sheets (14) are fixedly connected to the bottom ends of the telescopic rods (13); the telescopic rod (13) is sleeved with a spring (15), and two ends of the spring (15) are respectively fixedly connected with the connecting plate (12) and the metal sheet (14).
6. The novel EL test device as claimed in claim 5, wherein the telescoping assembly (11) is an electric telescoping rod or a pneumatic cylinder.
7. The novel EL testing device as claimed in claim 5, wherein the adjusting assembly comprises a telescopic tube, the telescopic tube comprises an outer tube (16) and an inner tube (17) sleeved in the outer tube (16), the inner tube (17) is in sliding limit fit with the outer tube (16), and the outer tube (16) and the inner tube (17) are respectively and fixedly connected with two adjacent control boxes (10); a sliding block (18) is slidably sleeved at one end, close to the inner pipe (17), of the outer pipe (16), a motor (19) is fixed in the control box (10) fixed with the outer pipe (16), the output end of the motor (19) is in transmission connection with a screw rod (20), the screw rod (20) penetrates through the sliding block (18) and is fixedly connected with a baffle (21), the screw rod (20) is in threaded connection with the sliding block (18), and the length of the screw rod (20) is the same as that of the outer pipe (16); the outer wall of the control box (10) fixed with the inner pipe (17) is fixedly connected with a connecting rod (22), and the tail end of the connecting rod (22) is fixedly connected with the sliding block (18).
8. The novel EL testing device as claimed in claim 1, characterized in that a positioning cushion (23) is fixedly connected to the inner wall of the housing (2) corresponding to the opening, and the positioning cushion (23) is arranged corresponding to the conveying device (1).
9. A method for testing a novel EL test device, characterized in that the novel EL test device as claimed in any one of claims 1 to 8 is used, and the method comprises the following steps:
a. equipment debugging, namely adjusting the distance between the sliding assemblies and the distance between two adjacent connecting contacts according to the photovoltaic assembly to be tested;
b. positioning the photovoltaic module to be tested, namely transporting the photovoltaic module to be tested to the interior of the shell (2) by using the conveying device (1), enabling the photovoltaic module to be tested to correspond to the EL camera (3), and enabling a junction box lead of the photovoltaic module to be tested to correspond to the connecting contact;
c. testing is carried out, connecting contacts are utilized to enable all junction box leads on the photovoltaic module to be tested to be communicated, so that current output by a power supply forms a complete current loop in the photovoltaic module to be tested, an EL image of the photovoltaic module to be tested is obtained by an EL camera (3), and the obtained EL image information is transmitted to a computer processing system (4) by the EL camera (3) to be analyzed;
d. and obtaining a result, and judging whether a problem exists on a battery piece in the photovoltaic module to be detected or not according to the result obtained by the computer processing system (4).
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| CN202111535028.1A CN114157238B (en) | 2021-12-15 | 2021-12-15 | EL testing device and testing method thereof |
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| CN202111535028.1A CN114157238B (en) | 2021-12-15 | 2021-12-15 | EL testing device and testing method thereof |
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| CN114157238B CN114157238B (en) | 2025-05-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116487280A (en) * | 2023-04-03 | 2023-07-25 | 中润光能科技(徐州)有限公司 | An electroluminescent testing machine for fully powered photovoltaic modules before lamination |
| CN119298852A (en) * | 2024-10-10 | 2025-01-10 | 山东焓兆能源集团有限公司 | Photovoltaic power generation grid-connected performance testing equipment |
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| CN119298852A (en) * | 2024-10-10 | 2025-01-10 | 山东焓兆能源集团有限公司 | Photovoltaic power generation grid-connected performance testing equipment |
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