CN111726073B - Processing method of photovoltaic module junction box - Google Patents
Processing method of photovoltaic module junction box Download PDFInfo
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- CN111726073B CN111726073B CN202010632937.6A CN202010632937A CN111726073B CN 111726073 B CN111726073 B CN 111726073B CN 202010632937 A CN202010632937 A CN 202010632937A CN 111726073 B CN111726073 B CN 111726073B
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- 238000003672 processing method Methods 0.000 title claims abstract description 18
- 238000003466 welding Methods 0.000 claims abstract description 70
- 238000000034 method Methods 0.000 claims description 19
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 description 9
- 239000000463 material Substances 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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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
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
- H02S40/34—Electrical components comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
- H01R43/0214—Resistance welding
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
- H01R43/0263—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections for positioning or holding parts during soldering or welding process
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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
Abstract
The invention discloses a processing method of a photovoltaic module junction box, which comprises the following steps: the junction box comprises a junction box body, wherein an accommodating cavity is defined in the junction box body; diode module, diode module locate and hold the chamber, and diode module includes: a diode body; at least one of the two module bus bar connecting ends is formed into an L shape, and the L-shaped module bus bar connecting end comprises a transverse limb and a vertical limb; the connecting piece is positioned on one side of the position where the vertical limb is back to the diode body and is connected with the transverse limb and/or the vertical limb, and the connecting piece is provided with a channel which is communicated along the thickness direction of the connecting piece; the processing method comprises the following steps: s1, one end of the bus bar on one side of the junction box body passes through the channel and is arranged opposite to the vertical limb; and S2, performing resistance welding on the side, opposite to the vertical limb and the bus bar, by adopting the clamping and welding assembly. The bus bar can be directly welded with the vertical limb without being bent, and the bus bar welding machine has the advantages of convenience in welding, high automation degree, labor saving and the like.
Description
Technical Field
The invention relates to the technical field of photovoltaic modules, in particular to a processing method of a junction box of a photovoltaic module.
Background
With global climate change and the increasing severity of environmental pollution problems, the green renewable energy industry has been rapidly developing over the last decade. Solar energy is a renewable resource, and solar cell technology for generating electricity by utilizing photovoltaic effect is well-paid attention by people.
In practical use, the photovoltaic module junction box is needed to lead out electric energy generated by the photovoltaic module to be connected with an external load, and the diode module of the photovoltaic module junction box is a key part of the photovoltaic module to construct various power generation systems. In order to extract electric energy generated by the photovoltaic module, a battery pack string formed by connecting a plurality of battery pieces by using a bus bar needs to pass through the front surface of the module to the back surface of the module through a general bus bar and be connected with a terminal of a diode module in a welding mode. The existing welding process generally adopts the traditional tin soldering welding process, tin smoke harmful to human bodies and the environment can be generated in the process, and the production efficiency is lower because manual welding is generally adopted.
In the existing production of a photovoltaic junction box, a welding method of a photovoltaic assembly bus bar and the junction box is that after the bus bar is inserted into the junction box, the bus bar is pressed to be parallel to or in contact with a bonding pad, and then welding flux is added for welding, due to the problems of welding conditions, unmonitorable welding process and the like, about 60% of the quality problems of the existing photovoltaic junction box occur at a welding position, the welding problem is that the solar photovoltaic assembly cannot work if the quality problems are light, and the photovoltaic assembly is burnt if the quality problems are heavy. In addition, the bent part of the bus bar always has a stress, and under the long-time high-temperature use environment after glue pouring and sealing, the stress can affect the service life of the bus bar and the effect of welding connection, and further affect the service life of the whole junction box.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art.
Therefore, the invention provides a processing method of a photovoltaic module junction box, which has the advantages of convenience in welding, high automation degree, labor saving, high welding quality and the like.
According to the processing method of the photovoltaic module junction box, the photovoltaic module junction box comprises the following steps: the junction box comprises a junction box body, wherein an accommodating cavity is defined in the junction box body; the diode module, the diode module is located hold the chamber, the diode module includes: a diode body; at least one of the two component bus bar connecting ends is formed into an L shape, the L-shaped component bus bar connecting end comprises a transverse limb and a vertical limb, one end of the transverse limb is connected with the diode body, one end of the vertical limb is connected with the other end of the transverse limb, and the other end of the vertical limb extends in the vertical direction; the connecting piece is positioned on one side of the vertical limb, which is opposite to the position of the diode body, and is connected with the transverse limb and/or the vertical limb, and the connecting piece is provided with a channel which is communicated along the thickness direction of the connecting piece; the processing method comprises the following steps: s1, one end of a bus bar on one side of the junction box body passes through the channel and is arranged opposite to the vertical limb; and S2, performing resistance welding on the side, opposite to the bus bar, of the vertical limb by adopting a clamping and welding assembly.
According to the processing method of the photovoltaic module junction box, the connecting end of the module bus bar is set to be L-shaped, the bus bar penetrates out of the channel of the connecting piece and is directly connected with the connecting end of the module bus bar in a welding mode, the bus bar does not need to be bent, resistance welding is directly carried out on one side, opposite to the vertical limb and the bus bar, of the clamping and welding module, stress of the bus bar is reduced, welding is facilitated, the service life of a diode module is prolonged, and the processing method has the advantages of being high in automation degree, low in production cost, high in production efficiency, capable of saving manpower and the like. The pollution problem caused by traditional welding can be solved by adopting a resistance welding mode, the welding process and the welding conditions can be monitored, the welding quality is guaranteed, and the service life of the photovoltaic module junction box is prolonged.
According to an embodiment of the invention, in step S2 of the method for processing the junction box of the photovoltaic module, the clamping and welding assembly includes two spaced and oppositely arranged clamping heads, and the vertical limb and the bus bar are arranged between the two clamping heads.
According to one embodiment of the invention, the upper end of each said clip is located above and spaced apart from said vertical limbs and said bus bar, respectively, and the lower end of each said clip extends towards the direction of the corresponding said vertical limbs or said bus bar.
According to one embodiment of the invention, the angle of inclination of the collets with respect to the vertical plane is between 0 ° and 90 °.
According to one embodiment of the invention, the step S2 of the processing method of the photovoltaic module junction box comprises the following steps: s21, pushing one chuck to be tightly attached to the vertical limb through an air cylinder; s22, driving the other chuck to cling to the bus bar through the servo head, and driving the other chuck to extrude the one chuck; and S23, starting welding after the pressure of the chuck reaches a preset value through the detection of the pressure detection part.
According to one embodiment of the invention, the bus bar is welded to at least a portion of the vertical leg.
According to one embodiment of the invention, the temperature of the chuck is between 2000 degrees Celsius and 3000 degrees Celsius.
According to one embodiment of the present invention, the module bus bar connection end is formed as a sheet-shaped body.
According to one embodiment of the invention, the side of the wafer adjacent to the location of the channel is provided with a protrusion protruding out of the surface of the wafer, and the side of the protrusion opposite to the bus bar is resistance welded in step S2.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a flow chart of steps in a method of manufacturing a photovoltaic module junction box according to an embodiment of the present invention;
fig. 2 is a schematic view of the overall structure of a photovoltaic module junction box according to the method of processing the photovoltaic module junction box according to the embodiment of the present invention;
FIG. 3 is a schematic view of the internal structure of a photovoltaic module junction box of a method of processing a photovoltaic module junction box according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a diode module of the processing method of the photovoltaic module junction box according to the embodiment of the invention;
FIG. 5 is a partial schematic structural view of a welding end of a processing method of a photovoltaic module junction box according to an embodiment of the invention;
reference numerals:
a diode module 100;
a diode body 10;
a module bus bar connection end 20; a transverse limb 21; a vertical limb 22; projection 221
A connecting member 30; a channel 35;
a photovoltaic module junction box 200;
a junction box body 210; the accommodation chamber 211;
a bus bar 400;
a collet 500.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A method of processing a photovoltaic module junction box 200 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.
According to the processing method of the photovoltaic module junction box 200 provided by the embodiment of the invention, the photovoltaic module junction box 200 comprises a junction box body 210 and the diode module 100.
As shown in fig. 1 to 5, specifically, the junction box body 210 has a receiving cavity 211 defined therein; the diode module 100 is arranged in the accommodating cavity 211, and comprises a diode body 10, two component bus bar connecting ends 20 and a connecting piece, wherein at least one of the two component bus bar connecting ends 20 is formed into an L shape, the L-shaped component bus bar connecting end 20 comprises a transverse limb 21 and a vertical limb 22, one end of the transverse limb 21 is connected with the diode body 10, one end of the vertical limb 22 is connected with the other end of the transverse limb 21, and the other end of the vertical limb 22 extends along the vertical direction; the connecting piece is positioned on one side of the vertical limb 22, which is opposite to the position of the diode body 10, is connected with the transverse limb 21 and/or the vertical limb 22, and is provided with a channel 35 which penetrates along the thickness direction of the connecting piece; the processing method comprises the following steps: s1, passing one end of the bus bar 400 located at one side of the junction box body 210 through the passage 35 and disposed opposite to the vertical leg 22; and S2, resistance welding the side, opposite to the vertical limb 22 and the bus bar 400, by adopting a clamping welding assembly.
In other words, the photovoltaic module junction box 200 is mainly composed of the junction box body 210 and the diode module 100. The junction box body 210 is provided with an accommodating cavity 211 extending in the up-down direction, and the upper side and the lower side of the accommodating cavity 211 are provided with open ends. The diode module 100 may be disposed at an opening at a lower end of the accommodating cavity 211, and the diode module 100 may be detachably connected to the open end at the lower end, so as to facilitate installation and fixation of the diode module 100 in the junction box.
The diode module 100 mainly includes a diode body 10, two module bus bar connection terminals 20, and a connection member, wherein the front and rear sides of the diode body 10 are respectively connected to the module bus bar connection terminal 20 located in front of the diode body 10 and the module bus bar connection terminal 20 located behind the diode body 10. At least one of the two module bus bar connection ends 20 may be formed in an L-shape, and the L-shaped module bus bar connection end 20 has a horizontal leg 21 extending in a horizontal direction and a vertical leg 22 extending in an up-down direction. One end of the transverse limb 21 is connected with the diode body 10, the other end of the transverse limb 21 is connected with the vertical limb 22, and the vertical limb 22 is positioned between the connecting piece and the diode body 10.
The connecting piece is provided with a channel 35 which is through along the thickness direction, and the bus bar 400 of the junction box can be connected with the vertical limb 22 in a welding mode by adopting a clamping welding assembly after passing through the channel 35 from the lower part in a resistance welding mode. Because the vertical limbs 22 and the bus bar 400 are arranged side by side, the bus bar 400 can be directly welded with the vertical limbs 22 without bending, and the stress generated by bending of the conventional bus bar 400 is reduced.
It should be noted that by adopting the resistance welding method, the welding quality can be detected and judged by combining the welding current, voltage, displacement and other factors in the welding process, the welding fastness of the bus bar 400 and the junction box is improved, the quality of the photovoltaic module is integrally improved, and the stability and the safety of the photovoltaic module are ensured.
From this, set up to L shape through setting up subassembly busbar link 20, busbar 400 wears out in the passageway 35 of connecting piece and directly links to each other with the welding of subassembly busbar link 20, need not buckle busbar 400, directly adopt clamping welding subassembly to carry out resistance welding to one side that perpendicular limb 22 and busbar 400 set up relatively, the stress of busbar 400 has been reduced, and be convenient for weld, the life of diode module 100 has been improved, and has the degree of automation height, low in production cost, high production efficiency, practice thrift advantages such as manpower. The pollution problem caused by traditional welding can be solved by adopting a resistance welding mode, the welding process and the welding conditions can be monitored, the welding quality is guaranteed, and the service life of the photovoltaic module junction box 200 is prolonged.
As shown in fig. 5, in step S2 of the method for manufacturing the photovoltaic module junction box 200 according to an embodiment of the present invention, the clamping and welding assembly includes two spaced and oppositely disposed clamping heads 500, and the vertical leg 22 and the bus bar 400 are disposed between the two clamping heads 500. Welding is facilitated by having the vertical limbs 22 and the bus bar 400 vertically disposed within the two collets 500.
Further, the upper end of each collet 500 is located above the vertical limb 22 and the bus bar 400 and is spaced apart from the vertical limb 22 and the bus bar 400, respectively, and the lower end of each collet 500 extends toward the corresponding vertical limb 22 or the bus bar 400. The clamp 500 is juxtaposed with the vertical leg 22 or the bus bar 400 to ensure that the vertical leg 22 and the bus bar 400 are partially within the clamp 500.
Alternatively, the collets 500 may be inclined at an angle of 0 ° to 90 ° with respect to the vertical plane. The inclined included angle between the clamping head 500 and the vertical surface can be adjusted according to a specific product structure, so that the welding firmness is increased, and the operation and implementation are facilitated.
In some embodiments of the invention, step S2 includes: s21, pushing a clamping head 500 to cling to the vertical limb 22 through the air cylinder; s22, driving another collet 500 to cling to the bus bar 400 through the servo head, and driving another collet 500 to squeeze one collet 500; s23, the pressure detection part detects that the pressure of the chuck 500 reaches a preset value, then welding is started, and the welding process is controlled, so that the welding quality is improved.
Further, the bus bar 400 is welded with at least one part of the vertical limb 22, so that the bus bar 400 is effectively welded with the vertical limb 22, and the condition of incomplete welding and cold joint is avoided.
According to one embodiment of the invention, the temperature of the chuck 500 is 2000-3000 ℃, and by setting the welding temperature of the chuck 500, the situation that welding can not be performed due to too low temperature and materials can be damaged due to too high temperature is avoided, so that the welding quality is ensured to be controllable.
Alternatively, the module bus bar connection terminal 20 is formed as a sheet-shaped body, that is, the module bus bar connection terminal 20 is a conductive sheet.
As shown in fig. 5, preferably, the side of the sheet adjacent to the position of the channel 35 is provided with a projection 221 protruding out of the surface of the sheet, and the side of the projection 221 disposed opposite to the bus bar 400 is resistance-welded in step S2. Through set up protruding 221 on the vertical limb 22 at subassembly busbar link 20, and set up and wear out one side near busbar 400, make things convenient for it to weld with busbar 400, improved the welding fastness.
In summary, according to the processing method of the photovoltaic module junction box 200 of the embodiment of the invention, firstly, one end of the bus bar 400 on one side of the junction box body 210 passes through the channel 35 and is arranged opposite to the vertical limb 22; then, the clamping and welding assembly is adopted to perform resistance welding on the side, opposite to the vertical limb 22 and the bus bar 400, so that the control of welding conditions and a welding process is realized, the welding quality is ensured, and the device has the advantages of high automation degree, labor conservation, high production efficiency and the like.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (5)
1. A processing method of a photovoltaic module junction box is characterized in that the photovoltaic module junction box comprises the following steps: the junction box comprises a junction box body, wherein an accommodating cavity is defined in the junction box body;
the diode module, the diode module is located hold the chamber, the diode module includes: a diode body;
at least one of the two component bus bar connecting ends is formed into an L shape, the L-shaped component bus bar connecting end comprises a transverse limb and a vertical limb, one end of the transverse limb is connected with the diode body, one end of the vertical limb is connected with the other end of the transverse limb, and the other end of the vertical limb extends in the vertical direction;
the connecting piece is positioned on one side of the vertical limb, which is opposite to the position of the diode body, and is connected with the transverse limb and/or the vertical limb, and the connecting piece is provided with a channel which is communicated along the thickness direction of the connecting piece;
the processing method comprises the following steps:
s1, one end of a bus bar on one side of the junction box body passes through the channel and is arranged opposite to the vertical limb;
s2, resistance welding is carried out on the side, opposite to the bus bar, of the vertical limb by adopting a clamping and welding assembly, and the step S2 comprises the following steps:
s21, pushing a chuck to cling to the vertical limb through an air cylinder;
s22, driving the other chuck to cling to the bus bar through the servo head, and driving the other chuck to extrude the one chuck;
s23, starting welding after the pressure of the chuck is detected to reach a preset value by the pressure detection part;
in step S2, the clamping and welding assembly includes two spaced and oppositely disposed chucks, and the vertical leg and the bus bar are disposed between the two chucks;
the upper end of each chuck is positioned above the vertical limb and the bus bar and is distributed at a distance from the vertical limb and the bus bar respectively, and the lower end of each chuck extends towards the direction of the corresponding vertical limb or the bus bar;
the inclined included angle of the chuck relative to the vertical surface is 0-90 degrees.
2. The method of claim 1, wherein the bus bar is welded to at least a portion of the vertical leg.
3. The method of claim 1, wherein the temperature of the chuck is between 2000 ℃ and 3000 ℃.
4. The method of manufacturing a photovoltaic module junction box of claim 2, wherein said module bus bar connection end is formed as a sheet-like body.
5. The method as claimed in claim 4, wherein a protrusion extending from a surface of the sheet is provided on a side of the sheet adjacent to the channel, and the side of the protrusion opposite to the bus bar is resistance welded in step S2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010632937.6A CN111726073B (en) | 2020-07-02 | 2020-07-02 | Processing method of photovoltaic module junction box |
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| CN202010632937.6A CN111726073B (en) | 2020-07-02 | 2020-07-02 | Processing method of photovoltaic module junction box |
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| CN111726073A CN111726073A (en) | 2020-09-29 |
| CN111726073B true CN111726073B (en) | 2021-07-09 |
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| CN112701102A (en) * | 2020-12-17 | 2021-04-23 | 苏州快可光伏电子股份有限公司 | Photovoltaic module bypass element module and split type photovoltaic module junction box with same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8113853B2 (en) * | 2008-08-29 | 2012-02-14 | Heyco, Inc. | Junction box for photovoltaic systems |
| CN102244123B (en) * | 2011-06-13 | 2012-11-28 | 人和光伏科技有限公司 | Junction box of solar battery |
| CN104270088B (en) * | 2014-09-26 | 2016-08-31 | 江西晶科光伏材料有限公司 | Photovoltaic junction box being easily assembled and preparation method thereof |
| CN207835408U (en) * | 2018-02-09 | 2018-09-07 | 无锡隆玛科技股份有限公司 | The copper bar of header box is exchanged for photovoltaic |
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Address after: No.16, Yaxi Road, Zhixi Town, Jintan District, Changzhou City, Jiangsu Province 213200 Patentee after: Jiangsu Zerun Xinneng Technology Co.,Ltd. Address before: No.16, Yaxi Road, Zhixi Town, Jintan District, Changzhou City, Jiangsu Province 213200 Patentee before: Jiangsu Zerun New Material Co.,Ltd. |