CN112564621B - Photovoltaic module production method and system - Google Patents
Photovoltaic module production method and system Download PDFInfo
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- CN112564621B CN112564621B CN202011468117.4A CN202011468117A CN112564621B CN 112564621 B CN112564621 B CN 112564621B CN 202011468117 A CN202011468117 A CN 202011468117A CN 112564621 B CN112564621 B CN 112564621B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 29
- 238000012360 testing method Methods 0.000 claims abstract description 89
- 239000000523 sample Substances 0.000 claims abstract description 51
- 239000003292 glue Substances 0.000 claims abstract description 37
- 238000000034 method Methods 0.000 claims abstract description 37
- 238000003825 pressing Methods 0.000 claims abstract description 22
- 238000011076 safety test Methods 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 5
- 238000004806 packaging method and process Methods 0.000 claims description 5
- 238000004382 potting Methods 0.000 claims 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 238000009432 framing Methods 0.000 description 7
- 239000000741 silica gel Substances 0.000 description 7
- 229910002027 silica gel Inorganic materials 0.000 description 7
- 210000001503 joint Anatomy 0.000 description 6
- 238000003466 welding Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
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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
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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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- Photovoltaic Devices (AREA)
Abstract
The invention provides a production method and a production system of a photovoltaic module, and relates to the technical field of solar photovoltaics. The method comprises the following steps: mounting a junction box on the photovoltaic module; carrying out primary curing on the photovoltaic module provided with the junction box; two probes of a tester are respectively in electrical contact with the exposed positive and negative electrodes of the photovoltaic module in a probe pressing mode, so that the tester is electrically connected with the photovoltaic module; adopting the tester to carry out power-on test on the photovoltaic module; and (5) pouring glue into the junction box of the photovoltaic module and carrying out secondary curing. In the embodiment of the invention, before the glue is filled into the junction box, the electrical test is firstly carried out, before the glue is not filled, the positive electrode and the negative electrode of the photovoltaic module are exposed, and the electrical connection between the tester and the photovoltaic module can be automatically realized by adopting a mode of pressing the probe downwards so as to automatically complete the power-on test, thereby improving the automation degree of the production process of the photovoltaic module.
Description
Technical Field
The invention relates to the technical field of solar photovoltaics, in particular to a method and a system for producing a photovoltaic module.
Background
In the production process of the photovoltaic module, after framing, a power-on test is required to test the properties of the photovoltaic module, such as safety, power and the like.
At present, the power-on test after framing is specifically to electrically connect a power-on tool to positive and negative cables of a junction box of a photovoltaic module, and then perform the power-on test.
However, in the prior art, the power-on test after framing cannot complete automatic test, so that the automation degree of the production process of the photovoltaic module is low.
Disclosure of Invention
The invention provides a photovoltaic module production method, and aims to solve the problem that automatic testing cannot be completed in a power-on test after framing, so that the automation degree of a photovoltaic module production process is low. The method comprises the following steps:
mounting a junction box on the photovoltaic module;
carrying out primary curing on the photovoltaic module provided with the junction box;
two probes of a tester are respectively in electrical contact with the exposed positive and negative electrodes of the photovoltaic module in a probe pressing mode, so that the tester is electrically connected with the photovoltaic module;
adopting the tester to carry out power-on test on the photovoltaic module;
and (5) pouring glue into the junction box of the photovoltaic module and carrying out secondary curing.
In the embodiment of the invention, before the glue is filled into the junction box, the electrical test is firstly carried out, before the glue is not filled, the positive electrode and the negative electrode of the photovoltaic module are exposed, and the electrical connection between the tester and the photovoltaic module can be automatically realized by adopting a mode of pressing the probe downwards so as to automatically complete the power-on test, thereby improving the automation degree of the production process of the photovoltaic module.
Optionally, the step of curing for the second time includes:
stacking and storing on the assembly line for secondary curing; or, adopting a curing room mode for secondary curing.
Optionally, the power-up test includes: and power testing, wherein after the step of performing the power-on test on the photovoltaic module by adopting the tester, the method further comprises the following steps:
acquiring a power difference value corresponding to cable testing;
and subtracting the power difference value from the power value obtained by performing power test on the photovoltaic module by using the tester to obtain the power value corresponding to the photovoltaic module.
Optionally, the step of obtaining a power difference corresponding to the cable test includes:
acquiring a current value I of the photovoltaic module;
obtaining resistance value of cable per unit length
Acquiring the cable length L1 of the junction box;
acquiring the length L2 of a cable of an electrifying tool to be electrically connected with the cable of the junction box;
using a formula
And calculating to obtain a power difference value corresponding to the cable test.
Optionally, the second curing lasts for a period of time greater than or equal to 1 hour and less than or equal to 2 hours.
Optionally, the power-up test includes: at least one of a safety test, a power test, and a quality test.
Optionally, the bare positive and negative poles of the photovoltaic module include: at least one of a positive pad and a negative pad of a junction box, and a positive lead and a negative lead of the photovoltaic module; the method comprises the following steps of respectively electrically contacting two probes of a tester with the exposed positive and negative electrodes of the photovoltaic module in a probe pressing mode:
and electrically contacting one probe of the tester with a positive bonding pad of the junction box or a positive lead of the photovoltaic module and electrically contacting the other probe of the tester with a negative bonding pad of the junction box or a negative lead of the photovoltaic module in a probe pressing mode.
Optionally, before the step of electrically contacting the two probes of the tester with the exposed positive and negative electrodes of the photovoltaic module respectively in a probe pressing manner, the method further includes:
and carrying out back cleaning on the photovoltaic module.
Optionally, after the step of performing glue filling and secondary curing on the junction box of the photovoltaic module, the method further includes:
and grading, packaging and warehousing the photovoltaic modules.
A second aspect of the present invention provides a photovoltaic module production system, comprising:
the mounting component is used for mounting the junction box on the photovoltaic module;
the first curing part is used for curing the photovoltaic module provided with the junction box for the first time; the power-on test component is used for respectively electrically contacting two probes of a tester with the exposed positive and negative electrodes of the photovoltaic module in a probe pressing mode to realize the electrical connection of the tester and the photovoltaic module; adopting the tester to carry out power-on test on the photovoltaic module;
and the secondary curing part is used for performing glue pouring on the junction box of the photovoltaic module and performing secondary curing.
The photovoltaic module production system has the same or similar beneficial effects as the photovoltaic module production method, and the details are not repeated here to avoid repetition.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced 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 that other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 shows a flow chart of a method of producing a photovoltaic module in an embodiment of the invention;
FIG. 2 shows a schematic electrical circuit diagram of a photovoltaic module in an embodiment of the invention;
FIG. 3 shows a schematic diagram of a power-up test of a photovoltaic module in an embodiment of the invention;
FIG. 4 shows a flow diagram of another photovoltaic module production method of an embodiment of the present invention;
fig. 5 is a schematic diagram illustrating a production process of a photovoltaic module according to an embodiment of the present invention.
Description of reference numerals:
21-probe, 22-positive lead of photovoltaic module, 23-negative lead of photovoltaic module.
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 some, not all, embodiments of the present invention. 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.
The inventor finds that the main reason that the automatic test cannot be completed in the power-on test after framing in the prior art is as follows: in the prior art, glue is filled into a junction box, after the junction box is filled with glue, the positive and negative electrodes of a photovoltaic module are sealed with junction box components, and the positive and negative electrodes of the photovoltaic module are hidden in the junction box, so that automatic butt joint cannot be realized in the process of cable butt joint when subsequent power-on tests are carried out, and manual cable butt joint is required. In the embodiment of the invention, before the glue is filled into the junction box, the electrical test is firstly carried out, before the glue is not filled, the positive electrode and the negative electrode of the photovoltaic module are exposed, and the electrical connection between the tester and the photovoltaic module can be automatically realized by adopting a probe pressing mode so as to automatically complete the power-on test, thereby improving the automation degree of the production process of the photovoltaic module.
Referring to fig. 1, fig. 1 shows a flow chart of a photovoltaic module production method in an embodiment of the present invention, which may specifically include the following steps:
In the embodiment of the invention, the junction box is mainly installed in two aspects, namely, silica gel is arranged at the bottom of the junction box, and then the junction box is bonded on the back cover plate of the photovoltaic module through the silica gel. And secondly, welding the positive and negative lead-out wires of the photovoltaic module to the welding pads of the junction box. The junction box is mainly used for realizing current output of the photovoltaic module, protection of a bypass and the like. The manner of mounting the terminal block is not particularly limited, and for example, a thermal soldering method may be used in the process of mounting the terminal block.
Optionally, for the framed photovoltaic module, the step 101 may further include: the photovoltaic module is framed, the framing can increase the strength of the photovoltaic module, the photovoltaic module is further sealed, and the service life of the photovoltaic module is prolonged. Silica gel can be filled in the gaps of the frame and the photovoltaic assembly to achieve a good sealing effect. The material of the frame is not particularly limited. For example, the photovoltaic module may be framed in aluminum.
And 102, carrying out primary curing on the photovoltaic module provided with the junction box.
In the embodiment of the invention, for the frameless photovoltaic module, the first curing in the step is mainly to cure the silica gel at the bottom of the junction box. For the framed photovoltaic module, the first curing has two main aspects, namely, the curing of the silica gel at the bottom of the junction box. Secondly, the frame is solidified, and the frame is solidified mainly by solidifying the silica gel in the gaps of the frame. The frame curing is typically continued for a period of about 3 hours.
In the prior art, the junction box is cured for the first time after being filled with glue, and in the prior art, the silica gel at the bottom of the junction box is cured in the first curing process, and the glue filled in the junction box is cured for the second time. In the prior art, after the junction box is filled with glue, the positive and negative electrodes of the photovoltaic module are sealed with the junction box components, and the positive and negative electrodes of the photovoltaic module are hidden in the junction box, so that automatic butt joint cannot be realized in the cable butt joint process during subsequent power-on test, and manual cable butt joint is required.
In the embodiment of the invention, the junction box is not filled with glue before the first curing, so that the positive and negative electrodes of the photovoltaic module are exposed after the first curing.
Referring to fig. 2, fig. 2 is a circuit schematic diagram of a photovoltaic module according to an embodiment of the present invention, and in fig. 2, before a junction box is not filled with glue, positive and negative electrodes of the photovoltaic module are exposed.
And 103, electrically contacting two probes of the tester with the exposed positive and negative electrodes of the photovoltaic module respectively in a probe pressing mode to realize the electrical connection of the tester and the photovoltaic module.
In the embodiment of the invention, the junction box is not filled with glue before the first curing, so that the positive and negative electrodes of the photovoltaic module are exposed after the first curing, and then the two probes of the tester can be respectively in electrical contact with the exposed positive and negative electrodes of the photovoltaic module in a probe pressing mode, so that the tester is electrically connected with the photovoltaic module. And the manner in which the probe is depressed can be easily automated. That is to say, in this application, through placing the step of terminal box encapsulating behind tester and photovoltaic module electric connection, and then in tester and photovoltaic module electric connection's in-process, the positive negative pole of photovoltaic module still exposes outside, and the positive negative pole of photovoltaic module is not hidden in the terminal box, need not artifical electric connection, has just realized electric connection automatically through the mode that the probe pushed down, has promoted automation.
Optionally, the bare positive negative pole of photovoltaic module includes: at least one of a positive pad and a negative pad of a junction box, and a positive lead and a negative lead of the photovoltaic module. The positive bonding pad of terminal box and photovoltaic module's anodal lead wire are equivalent to the parallel relation, and the negative bonding pad of terminal box and photovoltaic module's negative pole lead wire are equivalent to the parallel relation, and then promote photovoltaic module's fault-tolerant rate.
The step 103 may include: and electrically contacting one probe of the tester with a positive bonding pad of the junction box or a positive lead of the photovoltaic module and electrically contacting the other probe of the tester with a negative bonding pad of the junction box or a negative lead of the photovoltaic module in a probe pressing mode. That is, one of the two parallel positive electrodes is selected as the positive electrode of the photovoltaic module, and one of the two parallel negative electrodes is selected as the negative electrode of the photovoltaic module. And the two selected probes are electrically contacted with the two probes respectively, so that the electrical connection between the tester and the photovoltaic module is realized. The method can improve the fault tolerance rate of the electrical connection.
Referring to fig. 3, fig. 3 is a schematic diagram illustrating a power-on test of a photovoltaic module according to an embodiment of the present invention, and in fig. 3, before a junction box is not filled with glue, positive and negative electrodes of the photovoltaic module are exposed outside. In fig. 3, 21 is a probe, 22 is a positive electrode lead of the photovoltaic module, and 23 is a negative electrode lead of the photovoltaic module. In fig. 3, one probe 21 of the tester is electrically connected to the positive lead 22 of the photovoltaic module, and the other probe 21 of the tester is electrically connected to the negative lead 23 of the photovoltaic module, so that the tester is electrically connected to the photovoltaic module.
And 104, adopting the tester to carry out power-on test on the photovoltaic module.
After the tester is electrically connected with the photovoltaic module, the photovoltaic module can be automatically electrified and tested through the tester.
Optionally, the power-on test includes at least one of a safety test, a power test and a quality test. Safety tests are safety tests, and the safety tests can include grounding resistance tests, insulation tests, voltage withstanding tests and the like. The power test is an IV test and is used for measuring the output power of the photovoltaic module and the like. The quality test is used for testing the fragment rate, the splintering and the like of the cell in the photovoltaic module.
Generally, a safety test may be performed first, followed by a power test, a quality test, and the like. After the safety test, the front side of the photovoltaic module can be cleaned, and then the power test and the quality test can be continuously carried out.
And 105, performing glue pouring on the junction box of the photovoltaic module and performing secondary curing.
And after the power-on test is finished, the junction box of the photovoltaic module is subjected to glue pouring and secondary curing, after the glue pouring, the positive and negative electrodes of the photovoltaic module are sealed with the junction box components, and the positive and negative electrodes of the photovoltaic module are hidden in the junction box. The second curing is specifically to cure the glue filled in the junction box.
Optionally, the second curing in this step is continued for a period of time greater than or equal to 1 hour, and less than or equal to 2 hours, within which duration the second curing is sufficient. The glue for glue pouring is usually AB component glue, surface curing can be completed in half an hour under normal temperature and humidity environment, and full curing can be realized in the process of 1-2 hours.
Optionally, the second curing in this step may be performed by stacking and storing on an assembly line, or may be performed in a curing room manner. The assembly line is longer when the second curing is carried out by stacking and storing on the assembly line, and after glue pouring, the photovoltaic module is stored on the assembly line in a stacking mode for the duration. The second curing in the curing room mode is to place the photovoltaic module in the curing room for the duration. The two secondary curing modes can realize continuous production, and the production time can be saved.
Photovoltaic module stepping is usually performed after the second curing, and a longer assembly line exists from glue pouring to photovoltaic module stepping, so that stacking and storing on the existing assembly line can be realized on the assembly line.
In the embodiment of the invention, before the glue is filled into the junction box, the electrical test is firstly carried out, before the glue is not filled, the positive electrode and the negative electrode of the photovoltaic module are exposed, and the electrical connection between the tester and the photovoltaic module can be automatically realized by adopting a mode of pressing the probe downwards so as to automatically complete the power-on test, thereby improving the automation degree of the production process of the photovoltaic module.
Referring to fig. 4, fig. 4 shows a flow chart of another photovoltaic module production method according to an embodiment of the present invention, which specifically includes the following steps:
In the embodiment of the present invention, the step 201 and the step 202 may refer to the step 101 and the step 102, respectively, and are not described herein again to avoid repetition.
In the embodiment of the invention, the photovoltaic module is cleaned from back dust and the like.
And 204, electrically contacting two probes of the tester with the exposed positive and negative electrodes of the photovoltaic module respectively in a probe pressing mode to realize the electrical connection of the tester and the photovoltaic module.
And step 205, performing a power-on test on the photovoltaic module by using the tester.
In the embodiment of the present invention, the step 204 and the step 205 may refer to the step 103 and the step 104, respectively, and are not described herein again to avoid repetition.
In the embodiment of the invention, the power-on test process is carried out by pressing the bare anode and cathode of the photovoltaic module by using the probe, and the power of the photovoltaic module which is commonly used at present is obtained by electrically connecting the cable of the junction box with the cable of the power-on tool. In the embodiment of the invention, in the process of carrying out the power test, because a cable of the junction box and a cable of the electrifying tool are not used, the power obtained by the power test in the embodiment of the invention has a difference from a common power obtaining mode. The specific difference lies in the power lost on the cable of the junction box and the cable of the electrifying tool. Therefore, in order to be consistent with the current power obtaining mode, the power difference corresponding to the cable test can be obtained, and then the power difference is subtracted from the power value P1 obtained by the tester corresponding to the probe to obtain the power value corresponding to the photovoltaic module. The power value obtained in this step is the power value obtained in the current power acquisition mode.
Optionally, the step 206 may include: and a substep S1 of acquiring a current value I of the photovoltaic module. Substep S2, obtaining the resistance value of the cable per unit length
And a substep S3 of obtaining a cable length L1 of the junction box. And a substep S4, obtaining the cable length L2 of the power-on tool to be electrically connected with the cable of the junction box. Substep S5, using the formula
And calculating to obtain a power difference value corresponding to the cable test.
Specifically, the current value I of the photovoltaic module can be obtained through testing. After the material and cross-sectional area of the cable are determined, the resistance value of the cable per unit length
Thus obtaining the product. The cable length L1 of the junction box can be measured by lengthThe tool measures. The cable length L2 of the power-on tool to which the cable of the junction box is to be electrically connected can also be measured by a length measuring tool. Then using the formula
The corresponding power difference for the cable test can be calculated.
And step 207, subtracting the power difference value from the power value obtained by performing the power test on the photovoltaic module by using the tester to obtain the power value corresponding to the photovoltaic module.
In step 205, the power value obtained by the tester corresponding to the probe is P1,
wherein P2 is the power value of the photovoltaic module obtained by the current power acquisition mode.
Through the step 206 and the step 207, the power value of the photovoltaic module obtained by the embodiment of the invention can be consistent with the power value obtained by the current power obtaining mode, and the test error caused by different test modes can be avoided.
And 208, pouring glue into the junction box of the photovoltaic module and carrying out secondary curing.
The step can refer to the related description of the step 105, and is not repeated herein to avoid repetition.
And 209, grading, packaging and warehousing the photovoltaic modules.
The photovoltaic modules can be classified into corresponding class groups according to the result of the power-on test. And after grading, packaging the photovoltaic module, and warehousing to basically finish the production of the photovoltaic module.
Referring to fig. 5, fig. 5 is a schematic diagram illustrating a production process of a photovoltaic module according to an embodiment of the present invention. In fig. 5, for a framed photovoltaic module, 1 is framing the photovoltaic module, 2 is bonding a junction box to the photovoltaic module, 3 is welding positive and negative lead wires of the photovoltaic module on pads of the junction box, 4 is performing first curing on the photovoltaic module, 5 is performing back cleaning on the photovoltaic module, 6 is performing safety test on the photovoltaic module, 7 is performing front cleaning on the photovoltaic module, 8 is performing power test on the photovoltaic module, 9 is performing quality test on the photovoltaic module, 10 is performing junction box glue pouring on the photovoltaic module, 11 is performing second curing on the photovoltaic module, 12 is grading the photovoltaic module, 13 is packaging the photovoltaic module, and 14 is warehousing the photovoltaic module. In fig. 5, this is done in sequence from 1-14.
In the embodiment of the invention, before the glue is filled into the junction box, the electrical test is firstly carried out, before the glue is not filled, the positive electrode and the negative electrode of the photovoltaic module are exposed, and the electrical connection between the tester and the photovoltaic module can be automatically realized by adopting a mode of pressing the probe downwards so as to automatically complete the power-on test, thereby improving the automation degree of the production process of the photovoltaic module.
The embodiment of the present invention further provides a photovoltaic module production system, including: the mounting component is used for mounting the junction box on the photovoltaic module; the first curing part is used for curing the photovoltaic module provided with the junction box for the first time; the power-on test component is used for respectively electrically contacting two probes of a tester with the exposed positive and negative electrodes of the photovoltaic module in a probe pressing mode to realize the electrical connection of the tester and the photovoltaic module; adopting the tester to carry out power-on test on the photovoltaic module; and the secondary curing part is used for performing glue pouring on the junction box of the photovoltaic module and performing secondary curing.
The photovoltaic module production system and the photovoltaic module production method can refer to each other, can realize all steps of the photovoltaic module production method, have the same or similar beneficial effects with the photovoltaic module production method, and are not repeated herein to avoid repetition.
It should be noted that, for simplicity of description, the method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the embodiments are not limited by the order of acts described, as some steps may occur in other orders or concurrently depending on the embodiments. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the embodiments of the application.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (8)
1. A method of producing a photovoltaic module, the method comprising:
mounting a junction box on the photovoltaic module;
carrying out primary curing on the photovoltaic module provided with the junction box;
two probes of a tester are respectively in electrical contact with the exposed positive and negative electrodes of the photovoltaic module in a probe pressing mode, so that the tester is electrically connected with the photovoltaic module;
adopting the tester to carry out power-on test on the photovoltaic module;
glue pouring is carried out on the junction box of the photovoltaic module, and secondary curing is carried out;
the power-up test comprises the following steps: and power testing, wherein after the step of performing the power-on test on the photovoltaic module by adopting the tester, the method further comprises the following steps:
acquiring a current value I of the photovoltaic module;
obtaining resistance value of cable per unit length
Acquiring the cable length L1 of the junction box;
acquiring the length L2 of a cable of an electrifying tool to be electrically connected with the cable of the junction box;
using a formula
Calculating to obtain a power difference value corresponding to the cable test;
and subtracting the power difference value from the power value obtained by performing power test on the photovoltaic module by using the tester to obtain the power value corresponding to the photovoltaic module.
2. The method of claim 1, wherein the second curing step comprises:
stacking and storing on the assembly line for secondary curing; or, adopting a curing room mode for secondary curing.
3. The method of claim 1, wherein the second curing is continued for a period of greater than or equal to 1 hour and less than or equal to 2 hours.
4. The method of claim 1, wherein the power-up test comprises: at least one of a safety test, a power test, and a quality test.
5. The method of any of claims 1-4, wherein the bare positive and negative poles of the photovoltaic module comprise: at least one of a positive pad and a negative pad of a junction box, and a positive lead and a negative lead of the photovoltaic module; the method comprises the following steps of respectively electrically contacting two probes of a tester with the exposed positive and negative electrodes of the photovoltaic module in a probe pressing mode:
and electrically contacting one probe of the tester with a positive bonding pad of the junction box or a positive lead of the photovoltaic module and electrically contacting the other probe of the tester with a negative bonding pad of the junction box or a negative lead of the photovoltaic module in a probe pressing mode.
6. The method according to any one of claims 1 to 4, wherein before the step of electrically contacting the two probes of the tester with the exposed positive and negative electrodes of the photovoltaic module by pressing the probes, the method further comprises:
and carrying out back cleaning on the photovoltaic module.
7. The method according to any one of claims 1-4, wherein after the step of potting the junction box of the photovoltaic module and performing the second curing, the method further comprises:
and grading, packaging and warehousing the photovoltaic modules.
8. A photovoltaic module production system, comprising:
the mounting component is used for mounting the junction box on the photovoltaic module;
the first curing part is used for curing the photovoltaic module provided with the junction box for the first time;
the power-on test component is used for respectively electrically contacting two probes of a tester with the exposed positive and negative electrodes of the photovoltaic module in a probe pressing mode to realize the electrical connection of the tester and the photovoltaic module; adopting the tester to carry out power-on test on the photovoltaic module; the power-up test comprises the following steps: power test, said adoptionAfter the step of carrying out power-on test on the photovoltaic assembly by the tester, acquiring a current value I of the photovoltaic assembly; obtaining resistance value of cable per unit length
Acquiring the cable length L1 of the junction box; acquiring the length L2 of a cable of an electrifying tool to be electrically connected with the cable of the junction box; using a formula
Calculating to obtain a power difference value corresponding to the cable test; subtracting the power difference value from the power value obtained by performing power test on the photovoltaic module by using the tester to obtain a power value corresponding to the photovoltaic module;
and the secondary curing part is used for performing glue pouring on the junction box of the photovoltaic module and performing secondary curing.
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| CN202549853U (en) * | 2012-01-13 | 2012-11-21 | 比亚迪股份有限公司 | Solar battery module |
| CN204668328U (en) * | 2015-06-15 | 2015-09-23 | 江苏东昇光伏科技有限公司 | Two glass solar components |
| CN208127146U (en) * | 2017-12-29 | 2018-11-20 | 成都中建材光电材料有限公司 | A kind of electrode pulling device for solar battery power test |
| CN110993727A (en) * | 2019-11-11 | 2020-04-10 | 杭州泰扶新能源有限公司 | Processing method of efficient solar photovoltaic power generation assembly |
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| KR101151885B1 (en) * | 2010-12-07 | 2012-05-31 | 한국항공우주연구원 | Cable access device and the system for testing conductive sensitivity using the same |
| CN202549853U (en) * | 2012-01-13 | 2012-11-21 | 比亚迪股份有限公司 | Solar battery module |
| CN204668328U (en) * | 2015-06-15 | 2015-09-23 | 江苏东昇光伏科技有限公司 | Two glass solar components |
| CN208127146U (en) * | 2017-12-29 | 2018-11-20 | 成都中建材光电材料有限公司 | A kind of electrode pulling device for solar battery power test |
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Effective date of registration: 20221104 Address after: No. 8, Taikang Road, Hailing District, Taizhou, Jiangsu 225300 Patentee after: Taizhou Longji Photovoltaic Technology Co.,Ltd. Address before: No. 268, Xingtai South Road, Hailing District, Taizhou City, Jiangsu Province Patentee before: LONGI SOLAR TECHNOLOGY (TAIZHOU) Co.,Ltd. |
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