CN220138882U - High-temperature automatic electricity permanent turn-off photovoltaic connector assembly and photovoltaic assembly - Google Patents
High-temperature automatic electricity permanent turn-off photovoltaic connector assembly and photovoltaic assembly Download PDFInfo
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- CN220138882U CN220138882U CN202321610734.2U CN202321610734U CN220138882U CN 220138882 U CN220138882 U CN 220138882U CN 202321610734 U CN202321610734 U CN 202321610734U CN 220138882 U CN220138882 U CN 220138882U
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- 230000005611 electricity Effects 0.000 title description 3
- 238000010248 power generation Methods 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims description 214
- 238000007789 sealing Methods 0.000 claims description 44
- 238000003780 insertion Methods 0.000 claims description 34
- 230000037431 insertion Effects 0.000 claims description 34
- 230000005540 biological transmission Effects 0.000 claims description 33
- 230000002093 peripheral effect Effects 0.000 claims description 33
- 238000003825 pressing Methods 0.000 claims description 18
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 241001631457 Cannula Species 0.000 claims description 4
- 230000001012 protector Effects 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 230000002349 favourable effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 3
- 235000017491 Bambusa tulda Nutrition 0.000 description 3
- 241001330002 Bambuseae Species 0.000 description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 3
- 239000011425 bamboo Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910001128 Sn alloy Inorganic materials 0.000 description 1
- JWVAUCBYEDDGAD-UHFFFAOYSA-N bismuth tin Chemical compound [Sn].[Bi] JWVAUCBYEDDGAD-UHFFFAOYSA-N 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The utility model relates to a high-temperature automatic electrical permanent shutdown photovoltaic connector assembly and a photovoltaic assembly, and relates to the technical field of photovoltaic power generation. A high-temperature automatic electrical permanent shutdown photovoltaic connector assembly comprises a conductive temperature-sensitive fuse element, a first conductive connecting piece and a second conductive connecting piece; the conductive temperature-sensing fuse is connected in series with the first conductive connecting piece or the second conductive connecting piece; the first conductive connecting piece is connected with the second conductive connecting piece in an inserting mode, and heat generated by energizing the first conductive connecting piece and the second conductive connecting piece can be transferred to the conductive temperature-sensing fuse. When the connection part of the first conductive connecting piece and the second conductive connecting piece generates direct current arc heating due to poor contact, the conductive temperature-sensing fusing piece can automatically fuse, cut off the current in the assembly string and eliminate the risk of fire; when the environment temperature where the conductive temperature-sensing fusing piece senses the photovoltaic module exceeds the fusing temperature, the conductive temperature-sensing fusing piece can automatically fuse so as to cut off an output circuit of the connected photovoltaic module.
Description
Technical Field
The utility model relates to the technical field of photovoltaic power generation, in particular to a high-temperature automatic electrical permanent shutdown photovoltaic connector assembly and a photovoltaic assembly.
Background
Photovoltaic power generation is a technology for converting solar energy into electric energy through a photovoltaic module, and belongs to the field of new energy development and application. The photovoltaic power generation has the characteristics of sustainability and no pollution in the power generation process.
The photovoltaic module is used as a key component of a photovoltaic power generation technology and comprises a photovoltaic cell, a positive electrode connector connected with an output positive electrode of a photovoltaic cell string and a negative electrode connector connected with an output negative electrode of the photovoltaic cell string. When the photovoltaic module is used, the positive electrode connector and the negative electrode connector of the other photovoltaic module are mutually inserted and connected, so that the two corresponding photovoltaic modules are mutually connected in series; similarly, a plurality of photovoltaic modules can be sequentially connected in series for providing voltages of corresponding magnitudes for the electrical appliances.
With the related art, when the metal connection parts between the positive electrode connector and the negative electrode connector have poor contact due to different molding processes, different heat treatment processes, uneven plugging stress and the like, the resistance between the corresponding metal connection parts between the two connectors is increased, so that the heat productivity of the metal positions of the interconnection of the two connectors is easily increased; when the metal connection part of the two connectors continuously heats for a long time, more serious direct current arc can be formed, and the high heat generated by heating easily causes surrounding inflammables or insulating layers of the connectors to fire so as to cause fire disaster, so that the safety is poor and the improvement is needed.
Disclosure of Invention
The utility model aims to provide a high-temperature automatic electrical permanent-turn-off photovoltaic connector assembly and a photovoltaic assembly, so as to solve the problem that the connector of the photovoltaic assembly is easy to continuously heat, reduce the risk of fire disaster at the connection position of the connector and improve the safety of electricity.
In a first aspect, the utility model provides a high-temperature automatic electrical permanent shutdown photovoltaic connector assembly, which adopts the following technical scheme:
a high-temperature automatic electrical permanent shutdown photovoltaic connector assembly comprises a conductive temperature-sensitive fuse element, a first conductive connecting piece and a second conductive connecting piece; the first conductive connecting piece comprises a first metal electrifying part and a first metal connecting part connected with the first metal electrifying part, and the second conductive connecting piece comprises a second metal electrifying part and a second metal connecting part connected with the second metal electrifying part; the conductive temperature-sensitive fuse piece comprises a temperature-sensitive fuse body, a metal conductive part connected with the temperature-sensitive fuse body and a metal wiring part connected with the temperature-sensitive fuse body, wherein the metal conductive part is connected with a first metal energizing part and is used for being electrically connected with one output electrode of the photovoltaic module; the second metal electrifying part is used for being electrically connected with one output electrode of the other photovoltaic module; the first metal connecting part and the second metal connecting part can be mutually spliced so as to enable the two corresponding photovoltaic modules to be electrically connected in series.
By adopting the technical scheme, when in use, the first metal connecting part connected with one photovoltaic module and the second metal connecting part connected with the other photovoltaic module are mutually and electrically connected, so that the two corresponding photovoltaic modules are connected in series; when the contact failure occurs at the connection part between the first metal connection part and the second metal connection part to cause the increase of resistance, the first metal connection part and the second metal connection part generate heat, and the heat can be sequentially transferred to the temperature-sensing fuse body along the first metal connection part, the first metal electrifying part and the metal conducting part; when the temperature of the temperature-sensitive fuse link is increased to the fusing temperature, the temperature-sensitive fuse link is fused, so that the power transmission line can be permanently disconnected, and the possibility of fire disaster caused by further heating at the joint of the first metal connecting part and the second metal connecting part is eliminated.
On the other hand, after the environmental temperature reaches or exceeds the fusing temperature of the temperature-sensitive fuse link after the fire disaster occurs, the temperature-sensitive fuse link fuses, so that the output circuit of the connected photovoltaic module is broken, and the output of the connecting module is cut off. The output of the photovoltaic array component reaches a safe voltage level, so that fire fighters can be safely rescued in a high-voltage-free direct-current electric shock environment, and the fire disaster can be extinguished in time.
Preferably, the first conductive connecting piece further comprises an insulating shell and a power transmission cable, and the first metal energizing part, the first metal connecting part, the temperature sensing fuse link, the metal conductive part and the metal wiring part are all positioned in the insulating shell; one end of the power transmission cable is connected with the metal wiring part, and the other end of the power transmission cable is used for being electrically connected with the output electrode of the photovoltaic module so as to form electrical connection between the metal wiring part and the corresponding output electrode of the photovoltaic module.
Through adopting above-mentioned technical scheme, insulating housing is including first metal circular telegram portion, metal conductive part, metal wiring portion protection, is favorable to reducing the risk of taking place the electric shock. On the other hand, the possibility of heat transmitted to the temperature-sensing fuse body by the first metal connecting part is reduced, so that the accuracy of heat sensing of the temperature-sensing fuse body on the first metal connecting part is improved.
Preferably, the insulating housing comprises a containing cylinder which is hollow in the interior and is provided with an opening at one end, and a sealing cylinder which is in threaded fit with one end of the opening of the containing cylinder; the end, far away from the sealing cylinder, of the accommodating cylinder is provided with a connecting hole for inserting the first metal connecting part in a penetrating manner, and the sealing cylinder is provided with a threading hole for inserting a power transmission cable in a penetrating manner; the first metal energizing part, the temperature sensing fuse link, the metal conducting part and the metal wiring part are all positioned in a cavity formed by the accommodating cylinder and the sealing cylinder.
Through adopting above-mentioned technical scheme, when needing to change the temperature sensing fuse-link, rotate sealed section of thick bamboo, can dismantle sealed section of thick bamboo to supply to take out the temperature sensing fuse-link by sealed section of thick bamboo, with dismantling and install new temperature sensing fuse-link, easy operation, convenient.
Preferably, the power transmission cable is sleeved with a locking ring sleeve, and the outer diameter of the locking ring sleeve gradually decreases along the axial direction of the locking ring sleeve to a direction away from the metal wiring part; the outer peripheral wall of the locking ring sleeve is used for being abutted with the inner peripheral wall of the threading hole; the outer peripheral wall of the locking ring sleeve inwards penetrates through the locking ring sleeve to form a plurality of abdication grooves, and the abdication grooves are sequentially formed in the circumferential direction of the locking ring sleeve.
By adopting the technical scheme, when the sealing cylinder is screwed up, the sealing cylinder can move towards the accommodating cylinder direction relative to the locking ring sleeve, so that the inner peripheral wall of the locking ring sleeve gradually abuts against the outer peripheral wall of the power transmission cable, the inner peripheral wall of the threading hole gradually abuts against the outer peripheral wall of the locking ring sleeve, and the power transmission cable and the sealing cylinder are kept relatively fixed; when the power transmission cable is dragged, the power transmission cable can drive the sealing cylinder to synchronously move, so that the possibility that the power transmission cable moves relative to the metal wiring part can be reduced, and the risk that the power transmission cable is separated from the metal wiring part is reduced.
When the inner peripheral wall of the threading hole extrudes the locking ring sleeve, the locking ring sleeve is positioned at the position of the abdicating groove and can be rapidly deformed towards the direction of the power transmission cable, so that the inner peripheral wall of the locking ring sleeve is conveniently abutted against the outer peripheral wall of the power transmission cable.
Preferably, the power transmission cable is sleeved with a sealing ring sleeve, and the outer peripheral wall of the sealing ring sleeve is abutted with the inner peripheral wall of the threading hole.
Through adopting above-mentioned technical scheme, the sealing ring cover is favorable to improving the leakproofness of being connected between the outer peripheral wall of power transmission cable and the interior perisporium of through wires hole to be favorable to improving the waterproof dustproof performance in corresponding position, in order to reduce the possibility of taking place the short circuit, thereby further be favorable to reducing the risk that the conflagration takes place.
Preferably, the first metal connecting part and the second metal connecting part comprise conductive cannulas, and each conductive cannula is connected with the corresponding first metal energizing part or second metal energizing part respectively; one of the conductive cannulas is a male metal cannula, and the other conductive cannula is a female metal cannula; the male metal insertion tube can be inserted into the female metal insertion tube so as to be mutually and electrically connected with the female metal insertion tube; the heat of the metal connection part of the female metal insertion tube and the male metal insertion tube can be transferred to the temperature-sensing fuse through the metal conductive part, and the heat of the external environment can be transferred to the temperature-sensing fuse.
Through adopting above-mentioned technical scheme, public metal intubate and female metal intubate grafting cooperation to establish ties each other electric connection between the second metal circular telegram portion of a photovoltaic module and another photovoltaic module, simple structure, simple operation.
Preferably, the first metal energizing part comprises a bearing piece connected with the first metal connecting part and a pressing piece for bending towards the bearing piece, and the pressing piece is connected with the bearing piece.
Through adopting above-mentioned technical scheme, when the temperature sensing fuse-link is installed, make metal electric conduction position on the holding piece, then to the metal electric conduction position direction bend compress tightly the piece to make compress tightly the piece compress tightly metal electric conduction position can, easy operation, convenient. Compared with welding, the metal conductive part is pressed by the pressing piece, so that the possibility of fusing the temperature-sensitive fuse link caused by temperature rise in the connecting and mounting process of the temperature-sensitive fuse link is reduced.
Preferably, the fusing temperature of the temperature-sensing fuse link is 85-200 ℃.
By adopting the technical scheme, the output circuit of the photovoltaic module is turned off in time, and the circuit current is cut off, so that the risks of fire and the like are eliminated.
Preferably, the temperature-sensitive fuse box also comprises a photovoltaic junction box, a first conductive connecting piece containing a temperature-sensitive fuse body and a second conductive connecting piece without the temperature-sensitive fuse body; the metal wiring part and the second metal energizing part are respectively and electrically connected with corresponding output electrodes of the photovoltaic cell strings in the photovoltaic assembly through the photovoltaic junction box.
Through adopting above-mentioned technical scheme, photovoltaic terminal box has the effect of protection to the circuit, is favorable to protecting photovoltaic module.
In a second aspect, the present utility model provides a photovoltaic module, which adopts the following technical scheme:
a photovoltaic module comprises a photovoltaic cell module and the high-temperature automatic electrical permanent shutdown photovoltaic connector module; the second metal energizing part is electrically connected with one output electrode of the photovoltaic cell assembly, and the metal wiring part is electrically connected with the other output electrode of the photovoltaic cell assembly; when the temperature sensing fuse protector is used, the second metal connecting part of one photovoltaic module is inserted with the first metal connecting part of the first conductive connecting piece containing the temperature sensing fuse protector of the other photovoltaic module, so that the two photovoltaic modules are connected in series, and one temperature sensing fuse protector is connected in series in a circuit of the series connection of the photovoltaic modules, and the circuit between any two adjacent photovoltaic modules is connected in series.
Through adopting above-mentioned technical scheme, link to each other second metal connecting portion with another photovoltaic module's first metal connecting portion, can make two photovoltaic modules that correspond establish ties each other to form the power supply of higher voltage. When poor contact or overhigh ambient temperature occurs at the joint between the two photovoltaic modules, the temperature-sensing fuse link can be automatically fused, so that the possibility of fire disaster or further spreading of the fire disaster is reduced.
In summary, the present utility model includes at least one of the following beneficial technical effects:
1. after the two photovoltaic modules are connected in an opposite-plug manner through the metal connecting part, when the resistance is increased due to poor contact at the connecting part between the first metal connecting part and the second metal connecting part, the first metal connecting part and the second metal connecting part generate heat, and heat can be sequentially transferred to the temperature-sensing fuse link along the first metal connecting part, the first metal electrifying part and the metal conducting part; when the temperature of the temperature-sensitive fuse link is raised to the fusing temperature, the temperature-sensitive fuse link is fused, so that the power transmission line can be permanently disconnected, and the possibility of fire disaster caused by further heating at the joint of the first metal connecting part and the second metal connecting part is immediately eliminated;
2. the accommodating cylinder is matched with the sealing cylinder, the bearing sheet is matched with the pressing sheet, the structure is simple, and the temperature-sensing fuse link is convenient to replace.
Drawings
Fig. 1 is a schematic view of the overall structure of a high temperature automatic electrical permanent shutdown photovoltaic connector assembly of the present utility model.
Fig. 2 is a schematic cross-sectional view for showing the structure of the first conductive connector and the second conductive connector.
Fig. 3 is a schematic view for showing the structure of the first energizing part and the first connecting part.
Fig. 4 is an exploded schematic view for showing the structure of the first conductive connector and the second conductive connector.
Fig. 5 is an enlarged view of a portion a in fig. 2.
Fig. 6 is a schematic diagram of the overall structure of a photovoltaic module in this embodiment.
In the figure, 1, a conductive temperature-sensitive fuse; 11. a temperature-sensitive fuse link; 12. a metal conductive part; 13. a metal wiring part; 2. a first conductive connection; 21. a first metal energizing part; 211. a support piece; 212. a compacting sheet; 22. a first metal connection portion; 221. a parent metal cannula; 23. an insulating housing; 231. an accommodating cylinder; 2311. a connection hole; 232. a sealing cylinder; 2321. a threading hole; 233. an insulating sleeve; 24. a power transmission cable; 3. a second conductive connection; 31. a second metal energizing part; 32. a second metal connection portion; 321. a male metal cannula; 33. a second housing; 331. a housing case; 3311. a relief hole; 332. a sealed housing; 333. an insulating tube body; 34. a second cable; 4. a seal ring sleeve; 5. a locking collar; 51. a relief groove; 52. a limiting ring; 6. a photovoltaic junction box; 7. a photovoltaic cell assembly.
Detailed Description
The present utility model will be described in further detail with reference to fig. 1 to 6.
A high temperature automatic electrical permanent shutdown photovoltaic connector assembly, referring to fig. 1 and 2, comprises a conductive temperature-sensitive fuse 1, a first conductive connector 2 and a second conductive connector 3.
Referring to fig. 2, 3 and 4, the first conductive connector 2 includes a first metal energizing part 21, a first metal connecting part 22, an insulating case 23 and a power transmission cable 24. The first metal connection portion 22 includes a female metal insertion tube 221, and the female metal insertion tube 221 has a circular tube shape with a hollow interior and two ends penetrating. The first metal energizing part 21 includes a receiving piece 211 and a pressing piece 212, the receiving piece 211 being integrally connected with an end wall of one end of the mother metal insertion tube 221; the number of the pressing pieces 212 is two, one pressing piece 212 is positioned at one side of the supporting piece 211, and the other pressing piece 212 is positioned at the other side of the supporting piece 211; one end of each pressing piece 212 is integrally connected with the corresponding side of the carrying piece 211, and the other end of each pressing piece 212 extends along the thickness direction of the pressing piece 212 in a direction away from the pressing piece 212. In this embodiment, the female metal cannula 221, the receiving piece 211, and the pressing piece 212 are all made of metal.
Referring to fig. 2, 3 and 4, the conductive temperature-sensitive fuse 1 includes a temperature-sensitive fuse body 11, a metal conductive portion 12 and a metal wiring portion 13, the temperature-sensitive fuse body 11 including a fuse; the metal conductive part 12 is cylindrical, and one end of the metal conductive part 12 is integrally connected with one end of the temperature-sensitive fuse 11; the structure of the metal wiring part 13 is the same as that of the first metal energizing part 21, and the supporting piece of the metal wiring part 13 is integrally connected with one end of the temperature-sensitive fuse 11, which is far away from the metal conductive part 12. In the assembly, the metal conductive part 12 is placed between the two pressing pieces 212, and then the pressing pieces 212 are bent toward the receiving piece 211, so that the pressing pieces 212 are brought into contact with the metal conductive part 12. The fusing temperature of the temperature-sensitive fuse link 11 is preferably 85-200 ℃; in this embodiment, the fusing temperature of the temperature-sensing fuse 11 is 140 ℃; in still another embodiment, the fusing temperature of the temperature-sensitive fuse 11 is 80 degrees celsius or 200 degrees celsius. In another embodiment, the temperature-sensitive fuse 11 may be a metal member made of bismuth-tin alloy or a structural member made of other low-melting-point conductive material. In another embodiment, the first metal energizing part 21 may be in a sheet shape, a column shape or a block shape, and the corresponding metal conductive part 12 is connected to the first metal energizing part 21 by a screw or a rivet.
Referring to fig. 2 and 4, the insulating housing 23 includes a receiving cylinder 231 and a sealing cylinder 232, and the receiving cylinder 231 and the sealing cylinder 232 each have a tubular shape with an opening at one end thereof and are hollow inside. One end of the accommodating cylinder 231, which is far away from the opening of the accommodating cylinder, is integrally formed with a connecting hole 2311; the mother metal insertion tube 221 is inserted into the accommodating tube 231 from one end of the opening of the accommodating tube 231 and is penetrated out through the connection hole 2311 so that the temperature-sensitive fuse 11 is positioned in the accommodating tube 231. The insulating housing 23 further comprises an insulating sleeve 233, the insulating sleeve 233 is sleeved outside the mother metal insertion tube 221, and the insulating sleeve 233 completely covers the mother metal insertion tube 221 inside; the insulating bush 233 is integrally connected with the accommodating cylinder 231. The insulating sleeve 233 is advantageous in reducing the risk of the female cannula 221 being touched by mistake to get an electric shock.
Referring to fig. 2 and 4, a threading hole 2321 is integrally formed at one end of the sealing cylinder 232, which is far from the opening of the sealing cylinder; one end of the power cable 24 is inserted through the threading hole 2321 and connected to the metal wiring portion 13, and the connection manner refers to the connection manner between the metal conductive portion 12 and the first metal energizing portion 21, which is not described herein. The inner peripheral wall of the sealing cylinder 232 is screwed to the outer peripheral wall of the housing cylinder 231 to cover the metal wiring portion 13 inside. In another embodiment, the metal wire connection portion 13 may also be in a sheet shape, a column shape or a block shape, and the corresponding metal wire connection portion 13 and the power cable 24 may be connected by a screw connection or a riveting manner.
Referring to fig. 2 and 4, the second conductive connector 3 includes a second metal energizing part 31, a second metal connecting part 32, a second housing 33, and a second cable 34. Second metal connection 32 includes a male metal cannula 321; the structure of the second metal energizing part 31 is the same as that of the first metal energizing part 21, and the receiving piece of the second metal energizing part 31 is integrally connected with the end wall of one end of the male metal insertion tube 321.
Referring to fig. 2 and 4, the second housing 33 includes a receiving case 331 and a sealing case 332. The accommodating shell 331 is hollow and has a shell shape with an opening at one end, and a relief hole 3311 is integrally formed at one end of the accommodating shell 331 far away from the opening of the accommodating shell; the structure of the sealing shell 332 is the same as that of the sealing cylinder 232, and the sealing shell 332 is in threaded fit with one end of the accommodating shell 331 far away from the yielding hole 3311; the second cable 34 is identical in structure to the power transmission cable 24. During assembly, one end of the second cable 34 is inserted through the threading hole of the sealing shell 332 and connected with the second metal energizing part 31; then, one end of the male metal insertion tube 321 far away from the second metal energizing part 31 is inserted into the accommodating shell 331 from one end of the opening of the accommodating shell 331 and is penetrated out from the abdication hole 3311, and the second metal energizing part 31 is positioned in the accommodating shell 331; finally, the sealing shell 332 is screwed with the accommodating shell 331. In this embodiment, the male metal cannula 321 and the second metal energizing part 31 are both made of metal.
Referring to fig. 2 and 4, the second housing 33 further includes an insulating tube 333, the insulating tube 333 is sleeved outside the male metal insertion tube 321, and the insulating tube 333 completely covers the male metal insertion tube 321 inside; the insulating tube 333 is integrally connected with the housing case 331. The outer diameter of the male cannula 321 is equal to the inner diameter of the female cannula 221; a gap for inserting the insulating sleeve 233 is provided between the inner peripheral wall of the insulating tube 333 and the outer peripheral wall of the male metal insertion tube 321. The insulating tube 333 is used to reduce the possibility of an electric shock caused by the male metal cannula 321 being touched by mistake.
Referring to fig. 2 and 4, when the insulating sleeve 233 is inserted into the insulating tube 333, the male metal insertion tube 321 is automatically inserted into the female metal insertion tube 221 so that the outer circumferential wall of the male metal insertion tube 321 abuts against the inner circumferential wall of the female metal insertion tube 221, thereby electrically connecting the two. When the male metal insertion tube 321 and the female metal insertion tube 221 generate heat due to poor contact or other reasons, the heat can be sequentially transferred to the temperature-sensitive fuse 11 along the male metal insertion tube 321, the receiving piece 211 and the metal conductive part 12; when the temperature of the temperature-sensitive fuse 11 is raised to the fusing temperature, the temperature-sensitive fuse 11 automatically fuses to permanently break the circuit, thereby being beneficial to reducing the possibility of fire caused by further raising the temperature at the joint of the male metal insertion tube 321 and the female metal insertion tube 221. In another embodiment, the outer diameter of the male metal cannula 321 may also be smaller than the inner diameter of the female metal cannula 221; the outer peripheral wall of the corresponding female metal cannula 221 is formed with a conductive protrusion by punching, so that the conductive protrusion is abutted against the outer peripheral wall of the male metal cannula 321, and a passage can be formed. In another embodiment, the first metal connection part 22 may be a male metal cannula 321, and the second metal connection part 32 may be a female metal cannula 221.
Referring to fig. 4 and 5, the power transmission cable 24 is sleeved with a sealing ring sleeve 4 and a locking ring sleeve 5; the sealing ring sleeve 4 is made of rubber, and the locking ring is made of plastic. One end of the sealing ring sleeve 4 is inserted into the locking ring sleeve 5, and the other end extends towards the temperature-sensitive fuse 11 so as to cover the corresponding metal conductive part 12. The locking ring sleeve 5 is cone-shaped, and the outer diameter of the locking ring sleeve 5 gradually decreases along the axial direction of the locking ring sleeve 5 in the direction away from the temperature-sensitive fuse 11; the outer peripheral wall of the locking ring sleeve is penetrated and provided with a plurality of abdication grooves 51 along the wall thickness direction, the abdication grooves 51 are sequentially arranged at intervals along the circumferential direction of the locking ring sleeve 5, and the inner side wall of each abdication groove 51 is connected with the end wall of one end, far away from the temperature-sensitive fuse link 11, of the locking ring sleeve 5.
Referring to fig. 4 and 5, a limit ring 52 is integrally formed on the outer peripheral wall of the locking collar 5 near one end of the temperature-sensitive fuse 11, and the other end is inserted into the threading hole 2321; in the process of rotating the sealing cylinder 232 to screw the sealing cylinder 232, the sealing cylinder 232 can drive the locking ring sleeve 5 to move towards the temperature-sensitive fuse 11; when the limiting ring 52 abuts against the outer peripheral wall of the sealing ring sleeve 4, the sealing cylinder 232 moves relative to the locking ring sleeve 5 to deform the locking ring sleeve 5 in the direction of the power transmission cable 24, so that the inner peripheral wall of the threading hole 2321 abuts against the outer peripheral wall of the locking ring sleeve 5, the inner peripheral wall of the locking ring sleeve 5 abuts against the outer peripheral wall of the sealing ring sleeve 4, and the inner peripheral wall of the sealing ring sleeve 4 abuts against the outer peripheral wall of the power transmission cable 24, so that the power transmission cable 24 is fixed relative to the sealing cylinder 232. In this embodiment, the sealing ring sleeve 4 and the locking ring sleeve 5 are also disposed between the second cable 34 and the inner side wall of the threading hole of the sealing shell 332, and the matching relationship between the corresponding sealing ring sleeve 4 and locking ring sleeve 5 and the second cable 34 is the same as that described above, which is not repeated here.
Referring to fig. 1, the high temperature automatic electrical permanent shutdown photovoltaic connector assembly described above further includes a photovoltaic junction box 6, the photovoltaic junction box 6 being used to connect the output cables 24 and the second cables 34 with the output electrodes of the photovoltaic assembly; the structure, wiring mode, installation mode, etc. of the photovoltaic junction box 6 are disclosed in the related art, and the description of this embodiment is omitted.
The embodiment also discloses a photovoltaic module, referring to fig. 5, comprising a photovoltaic cell module 7 and the high-temperature automatic electrical permanent shutdown photovoltaic connector module. The photovoltaic cell assembly 7 includes a plurality of photovoltaic cells connected in series with each other. In another embodiment, the number of photovoltaic cells in the photovoltaic cell assembly 7 may also be one.
Referring to fig. 6, both the positive and negative electrodes of the photovoltaic cell assembly 7 are welded with the corresponding terminals of the photovoltaic junction box 6, respectively; the power transmission cable 24 is electrically connected with the anode of the photovoltaic cell assembly 7 through the photovoltaic junction box 6; the second cable 34 is electrically connected to the negative electrode of the photovoltaic cell assembly 7 through the photovoltaic junction box 6. In another embodiment, the power transmission cable 24 is electrically connected with the negative electrode of the photovoltaic cell assembly 7 through the photovoltaic junction box 6; the second cable 34 is electrically connected to the positive electrode of the photovoltaic cell assembly 7 through the photovoltaic junction box 6. In another embodiment, the positive and negative poles of the photovoltaic cell assembly 7 may also be connected to corresponding terminals of the photovoltaic junction box 6 by cables, respectively.
When the photovoltaic module is used, the male metal insertion pipe 321 of one photovoltaic module can be connected with the female metal insertion pipe 221 of the other photovoltaic module in an inserting mode, and then the corresponding photovoltaic modules can be connected in series. When the connection part of the male metal insertion tube 321 and the female metal insertion tube 221 is in poor contact and generates heat or the ambient temperature rises, heat can be transferred to the temperature-sensitive fuse body 11, so that the temperature-sensitive fuse body 11 is automatically fused, and a circuit can be opened timely, thereby being beneficial to eliminating the risk of fire caused by further rising of the temperature, cutting off the output of a connected photovoltaic module, and eliminating the hidden danger of high-voltage direct-current electric shock of a photovoltaic string.
The embodiments of the present utility model are all preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model, wherein like reference numerals are used to refer to like elements throughout. Therefore: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.
Claims (10)
1. A high temperature automatic electrical permanent shutdown photovoltaic connector assembly, characterized by: the temperature-sensitive fuse comprises a conductive temperature-sensitive fuse element (1), a first conductive connecting piece (2) and a second conductive connecting piece (3); the first conductive connecting piece (2) comprises a first metal electrifying part (21) and a first metal connecting part (22) connected with the first metal electrifying part (21), and the second conductive connecting piece (3) comprises a second metal electrifying part (31) and a second metal connecting part (32) connected with the second metal electrifying part (31); the conductive temperature-sensitive fuse element (1) comprises a temperature-sensitive fuse body (11), a metal conductive part (12) connected with the temperature-sensitive fuse body (11) and a metal wiring part (13) connected with the temperature-sensitive fuse body (11), wherein the metal conductive part (12) is connected with a first metal energizing part (21), and the metal wiring part (13) is used for being electrically connected with one output electrode of the photovoltaic module; the second metal electrifying part (31) is used for being electrically connected with one output electrode of the other photovoltaic module; the first metal connecting part (22) and the second metal connecting part (32) can be mutually spliced so as to enable the corresponding two photovoltaic modules to be electrically connected in series.
2. The high temperature automatic electrical permanent shutdown photovoltaic connector assembly of claim 1, wherein: the first conductive connecting piece (2) further comprises an insulating shell (23) and a power transmission cable (24), and the first metal energizing part (21), the first metal connecting part (22), the temperature-sensing fuse link (11), the metal conductive part (12) and the metal wiring part (13) are all positioned in the insulating shell (23); one end of the power transmission cable (24) is connected with the metal wiring part (13), and the other end of the power transmission cable (24) is used for being electrically connected with an output electrode of the photovoltaic module so as to form electrical connection between the metal wiring part (13) and the corresponding output electrode of the photovoltaic module.
3. The high temperature automatic electrical permanent shutdown photovoltaic connector assembly of claim 2, wherein: the insulating housing (23) comprises a containing cylinder (231) which is hollow in the interior and is provided with an opening at one end, and a sealing cylinder (232) which is in threaded fit with one end of the opening of the containing cylinder (231); one end of the accommodating cylinder (231) far away from the sealing cylinder (232) is provided with a connecting hole (2311) for inserting the first metal connecting part (22) in a penetrating manner, and the sealing cylinder (232) is provided with a threading hole (2321) for inserting the power transmission cable (24) in a penetrating manner; the first metal energizing part (21), the temperature-sensing fuse body (11), the metal conducting part (12) and the metal wiring part (13) are all positioned in a cavity formed by the accommodating cylinder (231) and the sealing cylinder (232).
4. The high temperature automatic electrical permanent shutdown photovoltaic connector assembly of claim 3, wherein: the power transmission cable (24) is sleeved with a locking ring sleeve (5), and the outer diameter of the locking ring sleeve (5) gradually decreases along the axial direction of the power transmission cable to a direction away from the metal wiring part (13); the outer peripheral wall of the locking ring sleeve (5) is used for being abutted with the inner peripheral wall of the threading hole (2321); the outer peripheral wall of the locking ring sleeve (5) is internally provided with a relief groove (51) in a penetrating mode, and the relief groove (51) is sequentially provided with a plurality of relief grooves along the circumferential direction of the locking ring sleeve (5).
5. The high temperature automatic electrical permanent shutdown photovoltaic connector assembly of claim 3, wherein: the electric transmission cable (24) is sleeved with a sealing ring sleeve (4), and the outer peripheral wall of the sealing ring sleeve (4) is abutted to the inner peripheral wall of the threading hole (2321).
6. The high temperature automatic electrical permanent shutdown photovoltaic connector assembly of claim 1, wherein: the first metal connecting part (22) and the second metal connecting part (32) comprise conductive cannulas, and each conductive cannula is connected with a corresponding first metal energizing part (21) or second metal energizing part (31) respectively; one of the conductive cannulas is a male metal cannula (321), and the other conductive cannula is a female metal cannula (221); the male metal insertion tube (321) can be inserted into the female metal insertion tube (221) so as to be mutually and electrically connected with the female metal insertion tube (221); the heat at the metal connection part of the female metal insertion tube (221) and the male metal insertion tube (321) can be transferred to the temperature-sensing fuse body (11) through the metal conductive part (12), and the heat of the external environment can be transferred to the temperature-sensing fuse body (11).
7. The high temperature automatic electrical permanent shutdown photovoltaic connector assembly of claim 1, wherein: the first metal energizing part (21) comprises a carrying sheet (211) connected with the first metal connecting part (22) and a pressing sheet (212) used for bending towards the carrying sheet (211), and the pressing sheet (212) is connected with the carrying sheet (211).
8. The high temperature automatic electrical permanent shutdown photovoltaic connector assembly of claim 1, wherein: the fusing temperature of the temperature-sensing fuse link (11) is 85-200 ℃.
9. The high temperature automatic electrical permanent shutdown photovoltaic connector assembly of claim 1, wherein: the solar energy power generation device further comprises a photovoltaic junction box (6), a first conductive connecting piece (2) containing the temperature-sensitive fuse link (11) and a second conductive connecting piece (3) without the temperature-sensitive fuse link (11); the metal wiring part (13) and the second metal energizing part (31) are respectively and electrically connected with corresponding output electrodes of the photovoltaic cell string inside the photovoltaic module through the photovoltaic junction box (6).
10. A photovoltaic module, characterized in that: comprising a photovoltaic cell assembly (7) and a high temperature automatic electrical permanent shut-off photovoltaic connector assembly according to any one of claims 1 to 9; the second metal energizing part (31) is electrically connected with one output electrode of the photovoltaic cell assembly (7), and the metal wiring part (13) is electrically connected with the other output electrode of the photovoltaic cell assembly (7); when the temperature sensing fuse protector is used, the second metal connecting part (32) of one photovoltaic module is inserted with the first metal connecting part (22) of the first conductive connecting piece (2) containing the temperature sensing fuse (11) of the other photovoltaic module, so that the two photovoltaic modules are connected in series, and one temperature sensing fuse (11) is connected in series in a circuit between any two adjacent photovoltaic modules in the circuit in which the photovoltaic modules are connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321610734.2U CN220138882U (en) | 2023-06-25 | 2023-06-25 | High-temperature automatic electricity permanent turn-off photovoltaic connector assembly and photovoltaic assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321610734.2U CN220138882U (en) | 2023-06-25 | 2023-06-25 | High-temperature automatic electricity permanent turn-off photovoltaic connector assembly and photovoltaic assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220138882U true CN220138882U (en) | 2023-12-05 |
Family
ID=88952196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321610734.2U Active CN220138882U (en) | 2023-06-25 | 2023-06-25 | High-temperature automatic electricity permanent turn-off photovoltaic connector assembly and photovoltaic assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220138882U (en) |
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2023
- 2023-06-25 CN CN202321610734.2U patent/CN220138882U/en active Active
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