CN219268812U - A anodal terminal box, negative pole terminal box and photovoltaic module for photovoltaic turn-off - Google Patents
A anodal terminal box, negative pole terminal box and photovoltaic module for photovoltaic turn-off Download PDFInfo
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- CN219268812U CN219268812U CN202223596253.9U CN202223596253U CN219268812U CN 219268812 U CN219268812 U CN 219268812U CN 202223596253 U CN202223596253 U CN 202223596253U CN 219268812 U CN219268812 U CN 219268812U
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The utility model discloses an anode junction box, a cathode junction box and a photovoltaic module for photovoltaic shutdown, wherein the anode junction box comprises a first box body, a first shutdown connector, a photovoltaic anode connector, a first cable, a second cable, a first anode conductive piece, a first cathode conductive piece and a first reverse diode, wherein the first anode conductive piece, the first cathode conductive piece and the first reverse diode are arranged in the first box body; the first positive electrode conductive piece is connected with a shutoff device of the photovoltaic panel through a first cable and a first shutoff connector; the first positive electrode conductive piece is also electrically connected with a second cable and a photovoltaic positive electrode connector; the first positive electrode conductive member is connected with the first negative electrode conductive member through the second reverse diode. And the negative electrode junction box is correspondingly designed in the same way. The utility model can solve the problem that the equipment cost is high when the connection between the photovoltaic module and the shutdown device is realized by additionally arranging the adapter on the main loop of the photovoltaic module in the prior art for realizing the shutdown control of the photovoltaic panel.
Description
Technical Field
The utility model relates to a photovoltaic panel junction box, in particular to a positive electrode junction box, a negative electrode junction box and a photovoltaic module for photovoltaic shutdown.
Background
In order to ensure the safe turn-off of the photovoltaic panel, a turn-off device is generally connected in parallel to both ends of the positive and negative electrodes of the photovoltaic panel. In order to ensure the connection between the shutdown device and the photovoltaic panel, a conversion joint is additionally arranged at the positive electrode access end of the photovoltaic panel and a conversion joint is additionally arranged at the negative electrode access end of the photovoltaic panel, so that the two ends of the positive electrode and the negative electrode of the photovoltaic panel are electrically connected with the shutdown device. Because the number of the photovoltaic panels is large, more conversion heads are needed to be added, and the equipment cost is increased; meanwhile, as the physical connection points of equipment are increased due to the existence of the adapter, once one adapter is in a problem, the fault of the whole photovoltaic panel power generation system can be caused, and the stability of the photovoltaic power generation system is affected.
Disclosure of Invention
In order to overcome the defects of the prior art, one of the purposes of the utility model is to provide a positive terminal box for photovoltaic turn-off, which can solve the problem of high equipment cost when the photovoltaic panel is connected with a turn-off device by adding an additional conversion connector.
The second purpose of the utility model is to provide a negative electrode junction box for photovoltaic turn-off, which can solve the problem of high equipment cost when the photovoltaic panel is connected with a turn-off device by adding an additional conversion connector.
The third objective of the present utility model is to provide a photovoltaic module, which can solve the problem of high equipment cost when the photovoltaic panel is connected with the shutdown device by adding an additional adapter.
One of the purposes of the utility model is realized by adopting the following technical scheme:
the positive electrode junction box for photovoltaic shutdown comprises a first box body, a first shutdown connector, a photovoltaic positive electrode connector, a first cable and a second cable; the first box body is internally provided with a first positive electrode conductive piece, a first negative electrode conductive piece and a first reverse diode; one end of the first cable is electrically connected with one end of the first positive electrode conductive piece, and the other end of the first cable is electrically connected with a shutdown device of the photovoltaic panel through the first shutdown connector; one end of the second cable is electrically connected with the other end of the first positive electrode conductive piece, and the other end of the second cable is electrically connected with the positive electrode of the photovoltaic module through the photovoltaic positive electrode connector; the first reverse diode is further arranged between the first positive electrode conductive piece and the first negative electrode conductive piece.
Further, one end of the first cable is also fixed at one end of the first positive electrode conductive piece through a first wiring terminal and is electrically connected with the first positive electrode conductive piece; one end of the second cable is also fixed at one end of the first positive electrode conductive piece through a second wiring terminal and is electrically connected with the first positive electrode conductive piece.
Further, the first positive electrode conductive member is a first copper bridge, and the first copper bridge is an integral structure formed by a first end part, a groove part and a second end part, wherein the first end part and the second end part of the first copper bridge are symmetrically arranged with the groove part of the first copper bridge; wherein a first end of the first copper bridge serves as one end of the first positive electrode conductive member, and a second end of the first copper bridge serves as the other end of the first positive electrode conductive member; the first negative electrode conductive piece is a first copper sheet;
the second end of the first positive electrode conductive piece is electrically connected with the first negative electrode conductive piece through a first reverse diode, the second end of the first positive electrode conductive piece is electrically connected with the negative electrode of the first reverse diode, and the first negative electrode conductive piece is electrically connected with the positive electrode of the first reverse diode.
Further, a first battery positive electrode bus bar perforation and a first battery positive electrode welding spot are arranged on the second end part of the first positive electrode conductive piece; the first negative electrode conductive piece is provided with a first battery negative electrode busbar perforation and a first battery negative electrode welding spot; the first cable and the second cable are both direct current cables.
The second purpose of the utility model is realized by adopting the following technical scheme:
a negative terminal box for photovoltaic shutdown, comprising a second box body, a second shutdown connector, a photovoltaic negative connector, a third cable and a fourth cable; wherein, a second negative electrode conductive piece, a second positive electrode conductive piece and a second reverse diode are arranged in the second box body; one end of the third cable is electrically connected with one end of the second negative electrode conductive piece, and the other end of the third cable is electrically connected with a shutdown device of the photovoltaic panel through the second shutdown connector; one end of the fourth cable is electrically connected with the other end of the second negative electrode conductive piece, and the other end of the fourth cable is electrically connected with a negative electrode of the photovoltaic module through the photovoltaic negative electrode connector; the second reverse diode is further arranged between the second negative electrode conductive piece and the second positive electrode conductive piece.
Further, one end of the third cable is further fixed to one end of the second positive electrode conductive member through a third wiring terminal and is electrically connected with the second positive electrode conductive member; the other end of the fourth cable is further fixed to one end of the second negative electrode conductive piece through a fourth wiring terminal and is electrically connected with the second negative electrode conductive piece.
Further, the second negative electrode conductive member is a second copper bridge, and the second copper bridge is an integrated structure formed by a first end part, a groove part and a second end part, wherein the first end part and the second end part of the second copper bridge are symmetrically arranged with the groove part of the second copper bridge; wherein a first end of the second copper bridge serves as one end of the second negative electrode conductive member, and a second end of the second copper bridge serves as the other end of the second negative electrode conductive member; the second anode conductive piece is a second copper sheet;
the second end of the second negative electrode conductive piece is electrically connected with the second positive electrode conductive piece through a second reverse diode, the second end of the second negative electrode conductive piece is electrically connected with the positive electrode of the second reverse diode, and the second positive electrode conductive piece is electrically connected with the negative electrode of the second reverse diode.
Further, a second battery negative electrode current collecting strip perforation and a second battery negative electrode welding spot are arranged on the second end part of the second negative electrode conductive piece; the second positive electrode conductive piece is provided with a second battery positive electrode current collecting strip perforation and a second battery positive electrode welding spot; the third cable and the fourth cable are both direct current cables.
The third purpose of the utility model is realized by adopting the following technical scheme:
a photovoltaic module comprising a positive terminal box for photovoltaic shutdown as employed for one of the purposes of the present utility model, a negative terminal box for photovoltaic shutdown as employed for the second purpose of the present utility model, a shutdown controller, and a photovoltaic panel; the photovoltaic positive connector of the positive terminal box is electrically connected with the positive electrode of the photovoltaic panel, and the first turn-off connector is electrically connected with the turn-off controller; the photovoltaic negative electrode connector of the negative electrode junction box is electrically connected with the negative electrode of the photovoltaic panel, and the second turn-off connector is electrically connected with the turn-off controller.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model improves the existing junction box so that the anode and the cathode of the photovoltaic panel are electrically connected with the turn-off device through the junction box, thereby solving the problems of equipment cost increase and physical connection point increase caused by the connection of the photovoltaic module and the turn-off device by adding an additional conversion connector on the main loop of the photovoltaic module.
Drawings
Fig. 1 is a schematic diagram of the internal structure of a positive terminal box for photovoltaic shutdown provided by the utility model;
fig. 2 is a schematic diagram of the internal structure of the negative terminal box for photovoltaic shutdown provided by the utility model;
fig. 3 is a schematic connection diagram of an anode junction box, a cathode junction box, a photovoltaic panel and a shutdown controller in the photovoltaic module provided by the utility model.
In the figure: 1. a positive terminal box; 11. a first shutdown connector; 12. a photovoltaic positive connector; 13. a first case; 14. a first cable; 15. a second cable; 16. a first positive electrode conductive member; 161. a first connection terminal; 162. a second connection terminal; 163. the first battery positive electrode busbar is perforated; 164. a first battery positive electrode welding spot; 17. a first negative electrode conductive member; 171. a first battery cathode welding spot; 172. a first battery negative busbar aperture; 18. a first reverse diode;
2. a negative electrode junction box; 21. a second shut-off connector; 22. a photovoltaic negative connector; 23. a second case; 24. a third cable; 25. a fourth cable; 26. a second negative electrode conductive member; 261. a third connection terminal; 262. a fourth connection terminal; 263. a second battery negative electrode strap perforation; 264. a second battery cathode welding spot; 27. a second positive electrode conductive member; 271. a second battery positive electrode welding spot; 272. the second battery positive electrode busbar is perforated; 28. a second reverse diode;
3. a photovoltaic panel; 4. the controller is turned off.
Detailed Description
The present utility model will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, on the premise of no conflict, the following embodiments or technical features may be arbitrarily combined to form new embodiments.
Example 1
According to the utility model, the junction box of the photovoltaic panel inside the existing photovoltaic module is improved, so that the junction box is led out from two ends, and meanwhile, the junction box and the switching-off device are additionally arranged while the original junction box is connected with the positive electrode or the negative electrode of the photovoltaic panel, so that the electrical connection of the photovoltaic module and the switching-off device is realized, and the addition of the conversion connector on the main circuit of the photovoltaic module is avoided.
The junction box comprises a junction box for the positive electrode of the photovoltaic panel and a junction box for the negative electrode of the photovoltaic panel based on the difference of junction positions of the junction boxes.
Specifically, as shown in fig. 1, the present utility model provides a preferred embodiment, namely a junction box for a photovoltaic shutdown positive electrode, which comprises a first shutdown connector 11, a photovoltaic positive electrode connector 12, a first box body 13, a first cable 14 and a second cable 15.
The first box 13 is provided therein with a first positive conductive member 16, a first negative conductive member 17, and a first reverse diode 18.
One end of the first cable 14 is electrically connected to one end of the first positive electrode conductive member 16, and the other end is electrically connected to the shut-off device of the photovoltaic panel through the first shut-off connector 11. One end of the second cable 15 is electrically connected with the other end of the first positive electrode conductive member 16, and the other end is electrically connected with the positive electrode of the photovoltaic panel through the photovoltaic positive electrode connector 12. The second cable 15 corresponds to the connection set by the original junction box, and the first cable 14 is the connection newly added by the junction box, so as to realize the electrical connection between the junction box and the turn-off controller of the turn-off device.
Preferably, a first reverse diode 18 is provided between the first positive conductive member 16 and the first negative conductive member 17.
More specifically, one end of the first cable 14 is further fixed to one end of the first positive conductive member 16 through the first connection terminal 161, and is electrically connected to the first positive conductive member 16. One end of the second cable 15 is further fixed to the other end of the first positive conductive member 16 through the second connection terminal 162, and is electrically connected to the first positive conductive member 16. The first connection terminal 161 and the second connection terminal 162 can be used for realizing the contact between the first cable 14 and the second cable 15 and the first positive electrode conductive member 16, and realizing the electrical connection.
More preferably, the first positive electrode conductive member 16 is a first copper bridge. The first copper bridge comprises an integral structure formed by a first end part, a groove part and a second end part, and the first end part and the second end part are symmetrically arranged with the groove part.
The first end of the first copper bridge serves as one end of the first positive electrode conductive member 16, and the second end serves as the other end of the first positive electrode conductive member 16.
Preferably, the first negative electrode conductive member 17 is a first copper sheet.
Further, the second end of the second copper bridge is electrically connected to the first negative electrode conductive member 17 through the first reverse diode 18, and the second end of the second copper bridge is electrically connected to the negative electrode of the first reverse diode 18, and the first negative electrode conductive member 17 is electrically connected to the positive electrode of the first reverse diode 18.
The second end of the second copper bridge is provided with a first battery positive bus bar perforation 163 and a first battery positive welding point 164. The first negative electrode conductive member 17 is provided with a first battery negative electrode strap aperture 172 and a first battery negative electrode pad 171. The positive electrode current collecting belt of the corresponding battery passes through the positive electrode current collecting belt perforation 163 of the first battery and is welded to the positive electrode welding spot 164 of the first battery, so that the battery and the junction box are electrically connected. Similarly, the negative electrode current collector tape of the corresponding battery is passed through the first battery negative electrode current collector tape perforation 172 and then welded to the first battery negative electrode welding point 171.
Preferably, the first cable 14 and the second cable 15 are both dc cables.
Preferably, as shown in fig. 2, the negative terminal box for photovoltaic shutdown includes a second shutdown connector 21, a photovoltaic negative connector 22, a second box 23, a third cable 24, and a fourth cable 25.
The second case 23 is provided therein with a second negative electrode conductive member 26, a second positive electrode conductive member 27, and a second reverse diode 28.
One end of the third cable 24 is electrically connected to one end of the second negative conductive element 26, and the other end is electrically connected to the shutdown device of the photovoltaic panel through the second shutdown connector 21. One end of the fourth cable 25 is electrically connected to the other end of the second negative electrode conductive member 26, and the other end is electrically connected to the negative electrode of the photovoltaic module through the photovoltaic negative electrode connector 22. Similarly, the fourth cable 25 corresponds to the original wiring of the junction box, and the third cable 24 serves as a newly added wiring of the junction box, so as to realize the electrical connection between the junction box and the photovoltaic panel and the shutdown device.
A second reverse diode 28 is also provided between the second negative electrode conductive member 26 and the second positive electrode conductive member 27.
Similarly, one end of the third cable 24 is further fixed to one end of the second positive conductive member 27 through the third connection terminal 261, and is electrically connected to the second positive conductive member 27. One end of the fourth cable 25 is further fixed to the other end of the second negative conductive member 26 through a fourth connecting terminal 262, and is electrically connected to the second negative conductive member 26.
Similarly, the second negative electrode conductive member 26 is a second copper bridge, and the second copper bridge is an integral structure formed by a first end portion, a groove portion, and a second end portion, wherein the first end portion and the second end portion are symmetrically arranged with the groove portion. Wherein the first end of the second copper bridge is one end of the second negative electrode conductive member 26, and the second end of the second copper bridge is the other end of the second negative electrode conductive member 26. The second positive electrode conductive member 27 is a second copper sheet.
The second end of the second copper bridge is electrically connected to the third positive electrode conductive member through the second reverse diode 28, and the second end of the second negative electrode conductive member 26 is electrically connected to the positive electrode of the second reverse diode 28, and the second positive electrode conductive member 27 is electrically connected to the negative electrode of the second reverse diode 28.
Preferably, a second battery negative strap aperture 263 and a second battery negative pad 264 are provided on a second end of the second copper bridge. The negative electrode current collecting belt of the corresponding battery passes through the second battery negative electrode current collecting belt perforation 263 and is welded to the second battery negative electrode welding spot 264, so that the battery and the junction box are electrically connected. Similarly, the second positive electrode conductive member 27 is provided with a second battery positive electrode strap hole 272 and a second battery positive electrode welding spot 271, and the positive electrode strap of the corresponding battery is welded to the second battery positive electrode welding spot 271 through the second battery positive electrode strap hole 272.
The third cable 24 and the fourth cable 25 are both dc cables.
Example two
Preferably, the present utility model also provides a photovoltaic module, as shown in fig. 3, comprising a positive electrode junction box 1, a negative electrode junction box 2, a shutdown controller 4, and a photovoltaic panel 3.
The photovoltaic positive electrode connector 12 of the positive electrode junction box 1 is electrically connected with the positive electrode of the photovoltaic panel 3, and the first shutdown connector 11 is electrically connected with the shutdown controller 4.
The photovoltaic negative electrode connector 22 of the negative electrode junction box 2 is electrically connected with the negative electrode of the photovoltaic panel 3, and the second shutdown connector 21 is connected with the shutdown controller 4. The shut down controller 4 is a control module of the shut down device.
The utility model sets the positive terminal box 1 between the positive pole of the photovoltaic panel 3 and the turn-off controller 4 of the turn-off device, and sets the negative terminal box 2 between the negative pole of the photovoltaic panel 3 and the turn-off controller 4 of the turn-off device to realize the connection of the turn-off controller 4 and the photovoltaic panel 3, so as to solve the problems of increasing equipment cost, increasing fault risk and the like caused by the connection of the turn-off device and the photovoltaic module by additionally adding the conversion connector on the main loop of the photovoltaic module in the prior art.
Meanwhile, when the turn-off device is connected with the photovoltaic module, an additional conversion connector is not needed to be additionally arranged, so that the power of a main loop of the photovoltaic module is not influenced, the equipment cost is reduced, meanwhile, the physical connection points on the main loop of the photovoltaic module are also reduced, and the risk of poor contact between physical equipment is reduced; in addition, the utility model can also collect the electrical performance parameters of the photovoltaic panel 3 of the photovoltaic module through the junction box so as to realize the monitoring of the operation state of the photovoltaic panel 3, and compared with the existing carrier control technology, the utility model has stronger electromagnetic field interference resistance.
Compared with the prior art, the utility model has fewer physical connection points, reduces the fault points and the risk of faults, and has lower cost and simpler installation.
The above embodiments are only preferred embodiments of the present utility model, and the scope of the present utility model is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present utility model are intended to be within the scope of the present utility model as claimed.
Claims (9)
1. The positive electrode junction box for photovoltaic shutdown is characterized by comprising a first box body, a first shutdown connector, a photovoltaic positive electrode connector, a first cable and a second cable; the first box body is internally provided with a first positive electrode conductive piece, a first negative electrode conductive piece and a first reverse diode; one end of the first cable is electrically connected with one end of the first positive electrode conductive piece, and the other end of the first cable is electrically connected with a shutdown device of the photovoltaic panel through the first shutdown connector; one end of the second cable is electrically connected with the other end of the first positive electrode conductive piece, and the other end of the second cable is electrically connected with the positive electrode of the photovoltaic module through the photovoltaic positive electrode connector; the first reverse diode is further arranged between the first positive electrode conductive piece and the first negative electrode conductive piece.
2. The positive terminal box for photovoltaic shutdown according to claim 1, wherein one end of the first cable is further fixed to one end of the first positive conductive member through a first connection terminal and is electrically connected to the first positive conductive member; one end of the second cable is also fixed at one end of the first positive electrode conductive piece through a second wiring terminal and is electrically connected with the first positive electrode conductive piece.
3. The positive electrode terminal box for photovoltaic shutdown according to claim 1, wherein the first positive electrode conductive member is a first copper bridge, and the first copper bridge is an integral structure formed of a first end portion, a groove portion, and a second end portion, wherein the first end portion and the second end portion of the first copper bridge are symmetrically arranged with the groove portion of the first copper bridge; wherein a first end of the first copper bridge serves as one end of the first positive electrode conductive member, and a second end of the first copper bridge serves as the other end of the first positive electrode conductive member; the first negative electrode conductive piece is a first copper sheet;
the second end of the first positive electrode conductive piece is electrically connected with the first negative electrode conductive piece through a first reverse diode, the second end of the first positive electrode conductive piece is electrically connected with the negative electrode of the first reverse diode, and the first negative electrode conductive piece is electrically connected with the positive electrode of the first reverse diode.
4. The positive terminal box for photovoltaic shutdown of claim 3, wherein a first battery positive strap aperture and a first battery positive pad are provided on the second end of the first positive conductive member; the first negative electrode conductive piece is provided with a first battery negative electrode busbar perforation and a first battery negative electrode welding spot; the first cable and the second cable are both direct current cables.
5. The negative electrode junction box for photovoltaic shutdown is characterized by comprising a second box body, a second shutdown connector, a photovoltaic negative electrode connector, a third cable and a fourth cable; wherein, a second negative electrode conductive piece, a second positive electrode conductive piece and a second reverse diode are arranged in the second box body; one end of the third cable is electrically connected with one end of the second negative electrode conductive piece, and the other end of the third cable is electrically connected with a shutdown device of the photovoltaic panel through the second shutdown connector; one end of the fourth cable is electrically connected with the other end of the second negative electrode conductive piece, and the other end of the fourth cable is electrically connected with a negative electrode of the photovoltaic module through the photovoltaic negative electrode connector; the second reverse diode is further arranged between the second negative electrode conductive piece and the second positive electrode conductive piece.
6. The negative terminal box for photovoltaic shutdown according to claim 5, wherein one end of the third cable is further fixed to one end of the second positive electrode conductive member through a third connection terminal, and is electrically connected to the second positive electrode conductive member; the other end of the fourth cable is further fixed to one end of the second negative electrode conductive piece through a fourth wiring terminal and is electrically connected with the second negative electrode conductive piece.
7. The anode junction box for photovoltaic shutdown according to claim 5, wherein the second anode conductive member is a second copper bridge, and the second copper bridge is an integral structure formed of a first end portion, a groove portion, and a second end portion, wherein the first end portion, the second end portion of the second copper bridge are symmetrically arranged with the groove portion of the second copper bridge; wherein a first end of the second copper bridge serves as one end of the second negative electrode conductive member, and a second end of the second copper bridge serves as the other end of the second negative electrode conductive member; the second anode conductive piece is a second copper sheet;
the second end of the second negative electrode conductive piece is electrically connected with the second positive electrode conductive piece through a second reverse diode, the second end of the second negative electrode conductive piece is electrically connected with the positive electrode of the second reverse diode, and the second positive electrode conductive piece is electrically connected with the negative electrode of the second reverse diode.
8. The negative terminal for photovoltaic shutdown of claim 7, wherein a second battery negative current collector strap aperture and a second battery negative solder joint are provided on a second end of the second negative conductive member; the second positive electrode conductive piece is provided with a second battery positive electrode current collecting strip perforation and a second battery positive electrode welding spot; the third cable and the fourth cable are both direct current cables.
9. A photovoltaic module comprising a positive terminal box for photovoltaic shutdown according to any one of claims 1 to 4, a negative terminal box for photovoltaic shutdown according to any one of claims 5 to 8, a shutdown controller, and a photovoltaic panel; the photovoltaic positive connector of the positive terminal box is electrically connected with the positive electrode of the photovoltaic panel, and the first turn-off connector is electrically connected with the turn-off controller; the photovoltaic negative electrode connector of the negative electrode junction box is electrically connected with the negative electrode of the photovoltaic panel, and the second turn-off connector is electrically connected with the turn-off controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223596253.9U CN219268812U (en) | 2022-12-29 | 2022-12-29 | A anodal terminal box, negative pole terminal box and photovoltaic module for photovoltaic turn-off |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223596253.9U CN219268812U (en) | 2022-12-29 | 2022-12-29 | A anodal terminal box, negative pole terminal box and photovoltaic module for photovoltaic turn-off |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219268812U true CN219268812U (en) | 2023-06-27 |
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ID=86869496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223596253.9U Active CN219268812U (en) | 2022-12-29 | 2022-12-29 | A anodal terminal box, negative pole terminal box and photovoltaic module for photovoltaic turn-off |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219268812U (en) |
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2022
- 2022-12-29 CN CN202223596253.9U patent/CN219268812U/en active Active
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