CN115764410A - Low-impedance photovoltaic connector with high contact pressure - Google Patents
Low-impedance photovoltaic connector with high contact pressure Download PDFInfo
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- CN115764410A CN115764410A CN202211509434.5A CN202211509434A CN115764410A CN 115764410 A CN115764410 A CN 115764410A CN 202211509434 A CN202211509434 A CN 202211509434A CN 115764410 A CN115764410 A CN 115764410A
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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 low-impedance photovoltaic connector with high contact pressure, which comprises a connecting body, an end cover, a driving piston, a spring, an extrusion driving assembly and a hot-melting extrusion head, wherein a first liquid cavity is formed between the hot-melting extrusion head and the connecting body, a wavy structure is arranged on one side of the hot-melting extrusion head, and the wave crest positions of the two hot-melting extrusion heads are staggered; a second liquid cavity is formed among the end cover, the shaft body, the first shaft hole and the driving piston, and insulating oil is filled in the second liquid cavity; two ends of the spring are abutted with the driving piston and the end cover; the connecting body is provided with a first liquid channel, and one end of the first liquid channel is communicated with the first liquid cavity; the end cover is provided with a second liquid channel, one end of the second liquid channel is communicated with the first liquid channel, and the other end of the second liquid channel is communicated with the second liquid cavity; the extrusion driving assembly is used for enabling the driving piston to slide against the elastic force of the spring; the invention can increase the effective contact area, reduce the contact resistance and reduce the self impedance of the connector, thereby reducing the current loss.
Description
Technical Field
The invention relates to the technical field of photovoltaic connectors, in particular to a low-impedance photovoltaic connector with high contact pressure.
Background
The photovoltaic connector, also called MC connector, is a key part for interconnecting various components in a photovoltaic power generation system, such as a combiner box, a controller, an inverter, and the like, and is not negligible. In a photovoltaic system, although the connector accounts for a small amount of time, many links need to be used, and equipment faults can be caused when a lot of constructors know the connector insufficiently.
Most of the existing photovoltaic connectors adopt plug-in type structures, and the problems that positive pressure between contact terminals is small, self impedance of the photovoltaic connectors is large, and loss generated when current flows through the photovoltaic connectors is large exist.
Disclosure of Invention
The object of the present invention is to overcome the above mentioned drawbacks and to provide a low impedance photovoltaic connector with a high contact pressure.
In order to achieve the purpose, the invention adopts the following specific scheme:
a low-impedance photovoltaic connector with high contact pressure comprises a connecting body, an end cover, a driving piston, a spring, an extrusion driving assembly and a hot-melting extrusion head;
one end of the connecting body is provided with a threading hole for a lead to penetrate through, two opposite guide holes communicated with the threading hole are concavely arranged on two sides of the threading hole of the connecting body, and a first shaft hole communicated with the threading hole is concavely arranged on the other end of the connecting body;
the two hot-melting extrusion heads are correspondingly arranged in the two guide holes in a sealing and sliding manner, a first liquid cavity is formed between each hot-melting extrusion head and the corresponding guide hole, a wave structure is arranged on one side of each hot-melting extrusion head, which is close to the threading hole, and the wave crest positions of the two hot-melting extrusion heads are staggered;
the end cover is fixed at the other end of the connecting body, a shaft body extends inwards from the inner wall of the end cover, the end part of the shaft body is attached to the inner bottom wall of the first shaft hole, and the end cover is provided with a second shaft hole which penetrates through the end cover and the shaft body and is communicated with the threading hole;
the driving piston is sleeved on the shaft body in a sealing and sliding manner; a second liquid cavity is formed among the end cover, the shaft body, the first shaft hole and the driving piston, and insulating oil liquid is filled in the second liquid cavity;
the spring is sleeved on the shaft body, and two ends of the spring are respectively abutted against the driving piston and the end cover; the driving piston is abutted against the inner bottom wall of the first shaft hole under the action of a spring;
two first liquid channels are arranged at positions corresponding to the two guide holes in the connecting body, and one ends of the first liquid channels are communicated with the corresponding first liquid cavities; the shaft body is provided with two second liquid channels corresponding to the two first liquid cavities, one end of each second liquid channel is communicated with the other end of the corresponding first liquid channel, and the other end of each second liquid channel is communicated with the second liquid cavity;
the extrusion driving assembly is arranged on the connecting body and is used for enabling the driving piston to slide against the elastic force of the spring.
The extrusion driving assembly further comprises a driving support, the driving support is provided with two driving rods, and the driving rods movably extend into the connecting body from one end of the connecting body and then abut against the end face of the driving piston.
The extrusion driving assembly further comprises a threaded sleeve, one end of the threaded sleeve is in threaded connection with the outer wall of one end of the connecting body, and the other end of the threaded sleeve is provided with a thrust part; the driving support is provided with a thrust step which is matched with the thrust part in an attaching mode.
Furthermore, the drive rods are provided with ratchets arranged along the length direction, and locking elastic sheets matched with the ratchets on the drive rods in a one-way locking manner are respectively arranged in the connecting body corresponding to the two drive rods.
Furthermore, the connecting body is provided with a mounting hole corresponding to each locking elastic sheet, and the locking elastic sheets can be inserted into the mounting holes.
Furthermore, each hot-melting extrusion head is uniformly provided with a through hole penetrating through the hot-melting extrusion head, hot melt is filled in the through hole, and the insulating oil can be decomposed to release carbon dioxide gas when the temperature exceeds 150 ℃.
Furthermore, a sealing liquid bag ring which is coaxial with the shaft body is fixed in the end cover and is communicated with the second liquid cavity;
the extrusion drive assembly further comprises a sealed air bag ring coaxially arranged with the connecting body, the driving support is provided with a second shaft hole, the sealed air bag ring is arranged in the second shaft hole, one side of the driving support, which is close to the connecting body, is provided with a plurality of air chambers and each air chamber, the air chambers are provided with air compression pistons, the sealed air bag ring is communicated with the air chambers, and the air compression pistons can slide under the extrusion of the end faces of the connecting body, so that the sealed air bag ring is inflated.
The invention further provides that the cross-sectional area of the driving piston is smaller than the sum of the cross-sectional areas of the two hot-melting extrusion heads.
Furthermore, two ends of the threading hole are respectively provided with a guide part.
The beneficial effects of the invention are as follows: according to the invention, the hot-melt extrusion blocks and the first liquid cavity are respectively arranged on two sides of the threading hole, the wave structures are arranged on the hot-melt extrusion blocks, and the wave crest positions of the two hot-melt extrusion heads are staggered, so that the two hot-melt extrusion blocks are driven to move in opposite directions under the coordination of the extrusion driving component, the second liquid cavity, the second liquid channel, the first liquid channel and the driving piston, the lapping part of the lead generates calendaring deformation, the effective contact area between the two leads is increased, the contact resistance between the two leads is reduced, the self impedance of the connector is reduced, and the current loss is reduced.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention when the hot melt extrusion head is not extruding a wire;
FIG. 3 is a schematic cross-sectional view of the hot melt extrusion head of the present invention extruding a wire;
FIG. 4 is another schematic cross-sectional view of the present invention as the hot melt extrusion head extrudes a wire;
FIG. 5 is a schematic structural view of the driving bracket and the locking spring plate of the present invention mounted on the connecting body;
description of reference numerals: 1. a connecting body; 2. an end cap; 21. a shaft body; 3. a drive piston; 4. a spring; 5. an extrusion drive assembly; 51. a drive bracket; 511. a drive rod; 512. a thrust step; 513. a ratchet; 52. a threaded sleeve; 521. a thrust part; 53. sealing the balloon ring; 54. a displacer; 6. hot melting the extrusion head; 7. a locking spring sheet; 8. a hot melt; 9. sealing the liquid bag ring; 10. a first fluid chamber; 20. a second fluid chamber; 30. a first fluid passage; 40. a second fluid passage.
Detailed Description
The invention will be described in further detail with reference to the following figures and specific examples, without limiting the scope of the invention.
As shown in fig. 1 to 5, the low impedance photovoltaic connector with high contact pressure according to the present embodiment includes a connecting body 1, an end cap 2, a driving piston 3, a spring 4, a pressing driving component 5 and a hot melting pressing head 6,
one end of the connecting body 1 is provided with a threading hole for a lead to penetrate through, two opposite guide holes which are communicated with the threading hole are concavely arranged on two sides of the threading hole of the connecting body 1, and a first shaft hole communicated with the threading hole is concavely arranged on the other end of the connecting body 1;
the two hot-melt extrusion heads 6 are correspondingly arranged in the two guide holes in a sealing and sliding manner, a first liquid cavity 10 is formed between each hot-melt extrusion head 6 and the corresponding guide hole, a wave structure is arranged on one side, close to the threading hole, of each hot-melt extrusion head 6, and wave crest positions of the two hot-melt extrusion heads 6 are staggered;
the end cover 2 is fixed at the other end of the connecting body 1, a shaft body 21 extends inwards from the inner wall of the end cover 2, the end part of the shaft body 21 is attached to the inner bottom wall of the first shaft hole, and the end cover 2 is provided with a second shaft hole which penetrates through the end cover 2 and the shaft body 21 and is communicated with the thread hole;
the driving piston 3 is sleeved on the shaft body 21 in a sealing and sliding manner; a second liquid cavity 20 is formed among the end cover 2, the shaft body 21, the first shaft hole and the driving piston 3, and insulating oil is filled in the second liquid cavity 20;
the spring 4 is sleeved on the shaft body 21, and two ends of the spring 4 are respectively abutted against the driving piston 3 and the end cover 2; the driving piston 3 is abutted with the inner bottom wall of the first shaft hole under the action of a spring 4;
two first liquid channels 30 are arranged in the connecting body 1 at positions corresponding to the two guide holes, and one ends of the first liquid channels 30 are communicated with the corresponding first liquid cavities 10; the shaft body 21 is provided with two second liquid channels 40 corresponding to the two first liquid chambers 10, one end of each second liquid channel 40 is communicated with the other end of the corresponding first liquid channel 30, and the other end of each second liquid channel 40 is communicated with the second liquid chamber 20;
the pressing driving assembly 5 is provided on the connecting body 1 and serves to slide the driving piston 3 against the elastic force of the spring 4.
The working mode of the embodiment is as follows: when the hot melt extrusion connector is used, the insulating layer of the ends of the wires to be connected is removed, the conductor part is exposed, and then the two wires are respectively inserted into the threading holes from the two ends of the connecting body 1, so that the overlapping part of the two wires is positioned between the two hot melt extrusion heads 6;
then promote drive piston 3 through extrusion drive assembly 5 and slide, make the compression of spring 4, the volume of second liquid chamber 20 reduces, insulating fluid in the second liquid chamber 20 passes through second liquid way 40, first liquid way 30 gets into in the first liquid chamber 10, make the oil pressure increase of first liquid chamber 10, promote hot melt extrusion piece and stretch out towards the wire, the interval between two hot melt extrusion pieces reduces, until the wave structure of two hot melt extrusion pieces extrudes respectively on the overlap joint portion of wire, compress tightly the overlap joint portion of two wires, at this moment because stagger setting between the crest of two hot melt extrusion pieces, the crest position of a hot melt extrusion piece corresponds with the trough position of another hot melt extrusion piece promptly, thereby make the overlap joint portion of wire produce the calendering deformation, thereby increase the effective area of contact between the overlap joint portion of two wires, reduce the contact resistance between two wires.
This embodiment sets up hot melt extrusion piece and first sap cavity 10 respectively through the both sides at the through wires hole, and set up wave structure on hot melt extrusion piece, and the crest position of two hot melt extrusion heads 6 staggers each other, thereby at extrusion drive assembly 5, second sap cavity 20, second liquid way 40, first liquid way 30, under the cooperation of drive piston 3, drive two hot melt extrusion pieces move in opposite directions, make the overlap joint portion of wire produce the calendering and warp, increase the effective area of contact between two wires, reduce the contact resistance between two wires, reduce the self impedance of connector, thereby reduce the current loss.
As shown in fig. 2 to 5, based on the above embodiment, further, the pressing driving assembly 5 includes a driving bracket 51, the driving bracket 51 has two driving rods 511, and the driving rods 511 movably extend into the connecting body 1 from one end of the connecting body 1 and then abut against the end surface of the driving piston 3. In actual use, the driving bracket 51 moves relative to the connecting body 1, so that the two driving rods 511 further extend into the connecting body 1, the driving piston 3 is pushed to extrude the spring 4, and the two hot-melting extrusion blocks are used for pressing the overlapping part of the lead; meanwhile, by arranging the two driving rods 511 on the driving bracket 51, the driving piston 3 is stressed more evenly and moves more stably.
As shown in fig. 1 to 4, based on the above embodiment, further, the extrusion driving assembly 5 further includes a threaded sleeve 52, one end of the threaded sleeve 52 is screwed on the outer wall of one end of the connecting body 1, and the other end of the threaded sleeve 52 has a thrust portion 521; the driving bracket 51 is provided with a thrust step 512 in abutting fit with the thrust part 521. In the embodiment, the threaded sleeve 52 is arranged, so that the threaded sleeve 52 moves relative to the connecting body 1 by screwing the threaded sleeve 52, and the thrust portion 521 is matched with the thrust step 512, so that the threaded sleeve 52 pushes the driving bracket 51 to move, and the operation is more convenient.
As shown in fig. 5, based on the above embodiment, further, the driving rods 511 are arranged with ratchet teeth 513 along the length direction thereof, and locking elastic pieces 7 for being unidirectionally locked and matched with the ratchet teeth 513 on the driving rods 511 are respectively arranged in the connecting body 1 corresponding to the two driving rods 511. This embodiment is through setting up locking shell fragment 7 and set up ratchet 513 on actuating lever 511 to utilize locking shell fragment 7 and ratchet 513 cooperation, carry out the locking to drive support 51, guarantee two hot melt extrusion pieces to the compressing tightly of wire, the structure is more reliable, is difficult for the pine to take off.
As shown in fig. 1 and 5, based on the above embodiment, further, the connection body 1 is provided with a mounting hole corresponding to each locking elastic sheet 7, and the locking elastic sheets 7 are installed in the mounting holes in a pluggable manner. This embodiment is through setting up the mounting hole to locking shell fragment 7's installation sets up locking shell fragment 7 pluggable in the mounting hole simultaneously, so that follow-up extracts locking shell fragment 7 from the mounting hole in, in order to remove the locking to drive support 51, thereby removes the overlap joint between two wires, and it is more convenient to maintain.
Based on the above embodiments, as shown in fig. 2 and fig. 3, further, through holes penetrating through the hot-melt extrusion heads 6 are uniformly distributed on each of the hot-melt extrusion heads 6, the through holes are filled with hot melt 8, and the insulating oil is decomposed to release carbon dioxide gas when the temperature exceeds 150 ℃. Specifically, when the position of the lap joint part of two wires is abnormally heated, the temperature of the hot-melt extrusion head 6 can be raised, the hot melt 8 filled in the hot-melt extrusion head 6 is melted, after the hot melt 8 is melted, the insulating oil in the first liquid cavity 10 enters the threading hole through the through hole, the lap joint part of the two wires is in a disconnected state, meanwhile, the insulating oil is decomposed after the temperature exceeds 150 ℃, a large amount of carbon dioxide gas is generated, the connector is prevented from causing fire disasters naturally due to high temperature, and the structure is safer to use.
As shown in fig. 2 to 4, based on the above embodiment, further, a sealing bag ring 9 coaxially disposed with the shaft body 21 is fixed in the end cover 2, and the sealing bag ring 9 is communicated with the second liquid chamber 20;
extrusion drive assembly 5 still includes one and the sealed gasbag ring 53 of connecting the coaxial setting of body 1, driving support 51 has a second shaft hole, sealed gasbag ring 53 is located in the second shaft hole, one side that driving support 51 is close to connecting body 1 is equipped with a plurality of air chambers, every the air chamber all is equipped with air piston 54, sealed gasbag ring 53 and each air chamber intercommunication, air piston 54 can slide under the terminal surface extrusion of connecting body 1 for sealed gasbag ring 53 inflates and expands.
Specifically, when the driving bracket 51 pushes the driving piston 3 to slide, the insulating oil in the second liquid chamber 20 enters the sealing liquid bag ring 9, so that the sealing liquid bag ring 9 is expanded and coated on the outer wall of the wire, thereby realizing the sealing between the connector and the wire, and as the driving bracket 51 moves, when the air pressing piston 54 contacts with the end part of the connecting body 1, the air pressing piston 54 retracts, so that the air in the air chamber is filled into the sealing gas bag ring 53, and the sealing gas bag ring 53 is expanded and coated on the outer wall of the wire, thereby realizing the sealing between the connector and the wire.
Based on the above embodiment, further, the cross-sectional area of the driving piston 3 is smaller than the sum of the cross-sectional areas of the two hot-melt extrusion heads 6. The present embodiment is configured such that when the driving bracket 51 pushes the driving piston 3 to slide, according to the formula F = P × S, the acting force of the driving piston 3 pushing the hot-melt extrusion head 6 through the transmission of the insulating oil is amplified and is greater than the power input by the driving bracket 51, so that the lap joint of the wire is more firmly pressed by the hot-melt extrusion head 6.
Based on the basis of the above embodiment, furthermore, the both ends of threading hole are equipped with the guide part respectively. This embodiment is through setting up the guide part to the overlap joint of wire is changeed in penetrating in the threading hole, and it is more convenient to operate.
The above description is only a preferred embodiment of the present invention, and therefore, all equivalent changes or modifications of the structure, characteristics and principles described in the present patent application are included in the protection scope of the present patent application.
Claims (9)
1. A low-impedance photovoltaic connector with high contact pressure is characterized by comprising a connecting body (1), an end cover (2), a driving piston (3), a spring (4), an extrusion driving component (5) and a hot-melting extrusion head (6);
one end of the connecting body (1) is provided with a threading hole for a lead to penetrate, two opposite guide holes communicated with the threading hole are concavely arranged on two sides of the threading hole of the connecting body (1), and a first shaft hole communicated with the threading hole is concavely arranged on the other end of the connecting body (1);
the two hot-melt extrusion heads (6) are correspondingly arranged in the two guide holes in a sealing and sliding manner, a first liquid cavity (10) is formed between each hot-melt extrusion head (6) and the corresponding guide hole, one side, close to the threading hole, of each hot-melt extrusion head (6) is provided with a wave structure, and the wave crest positions of the two hot-melt extrusion heads (6) are staggered;
the end cover (2) is fixed at the other end of the connecting body (1), a shaft body (21) extends inwards from the inner wall of the end cover (2), the end part of the shaft body (21) is attached to the inner bottom wall of the first shaft hole, and the end cover (2) is provided with a second shaft hole which penetrates through the end cover (2) and the shaft body (21) and is communicated with the threading hole;
the driving piston (3) is sleeved on the shaft body (21) in a sealing and sliding manner; a second liquid cavity (20) is formed among the end cover (2), the shaft body (21), the first shaft hole and the driving piston (3), and insulating oil is filled in the second liquid cavity (20);
the spring (4) is sleeved on the shaft body (21), and two ends of the spring (4) are respectively abutted against the driving piston (3) and the end cover (2); the driving piston (3) is abutted against the inner bottom wall of the first shaft hole under the action of a spring (4);
two first liquid channels (30) are arranged in the connecting body (1) at positions corresponding to the two guide holes, and one ends of the first liquid channels (30) are communicated with the corresponding first liquid cavities (10); the shaft body (21) is provided with two second liquid channels (40) corresponding to the two first liquid cavities (10), one end of each second liquid channel (40) is communicated with the other end of the corresponding first liquid channel (30), and the other end of each second liquid channel (40) is communicated with the corresponding second liquid cavity (20);
the extrusion driving assembly (5) is arranged on the connecting body (1) and is used for enabling the driving piston (3) to overcome the elastic force of the spring (4) to slide.
2. The low impedance photovoltaic connector with high contact pressure according to claim 1, wherein the pressing driving assembly (5) comprises a driving bracket (51), the driving bracket (51) is provided with two driving rods (511), and the driving rods (511) movably extend into the connecting body (1) from one end of the connecting body (1) and abut against the end face of the driving piston (3).
3. The low impedance photovoltaic connector with high contact pressure according to claim 2, wherein the pressing driving component (5) further comprises a threaded sleeve (52), one end of the threaded sleeve (52) is screwed on the outer wall of one end of the connecting body (1), and the other end of the threaded sleeve (52) is provided with a thrust part (521); the driving bracket (51) is provided with a thrust step (512) which is in abutting fit with the thrust part (521).
4. The photovoltaic connector with low impedance and high contact pressure as claimed in claim 2, wherein the driving rods (511) are arranged with ratchet teeth (513) along the length direction, and locking elastic pieces (7) for being in one-way locking fit with the ratchet teeth (513) on the driving rods (511) are respectively arranged in the connecting body (1) corresponding to the two driving rods (511).
5. The photovoltaic connector with low impedance and high contact pressure as claimed in claim 4, wherein the connecting body (1) is provided with a mounting hole corresponding to each locking elastic sheet (7), and the locking elastic sheets (7) are installed in the mounting holes in a pluggable manner.
6. The photovoltaic connector with low impedance and high contact pressure according to claim 2, wherein each hot-melting extrusion head (6) is uniformly provided with a through hole penetrating through the hot-melting extrusion head (6), the through hole is filled with a hot melt (8), and the insulating oil liquid can be decomposed to release carbon dioxide gas when the temperature exceeds 150 ℃.
7. The photovoltaic connector with low impedance and high contact pressure as claimed in claim 6, wherein a sealing liquid bag ring (9) coaxially arranged with a shaft body (21) is fixed in the end cover (2), and the sealing liquid bag ring (9) is communicated with the second liquid cavity (20);
extrusion drive assembly (5) still include one with the sealed gasbag ring (53) of connecting body (1) coaxial setting, driving support (51) have a second shaft hole, sealed gasbag ring (53) are located in the second shaft hole, one side that driving support (51) are close to connecting body (1) is equipped with a plurality of air chambers, every the air chamber all is equipped with air piston (54), sealed gasbag ring (53) and each air chamber intercommunication, air piston (54) can slide under the terminal surface extrusion of connecting body (1) for sealed gasbag ring (53) inflation.
8. A low impedance photovoltaic connector with high contact pressure according to claim 2, wherein the cross-sectional area of the driving piston (3) is smaller than the sum of the cross-sectional areas of the two hot-melt extrusion heads (6).
9. The high contact pressure, low impedance photovoltaic connector of claim 1, wherein said threading aperture is provided with guides at each end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211509434.5A CN115764410B (en) | 2022-11-29 | 2022-11-29 | Low-impedance photovoltaic connector with high contact pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211509434.5A CN115764410B (en) | 2022-11-29 | 2022-11-29 | Low-impedance photovoltaic connector with high contact pressure |
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| CN115764410A true CN115764410A (en) | 2023-03-07 |
| CN115764410B CN115764410B (en) | 2023-06-02 |
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| CN202211509434.5A Active CN115764410B (en) | 2022-11-29 | 2022-11-29 | Low-impedance photovoltaic connector with high contact pressure |
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| CN117190094A (en) * | 2023-11-01 | 2023-12-08 | 惠州市沃生照明有限公司 | Desktop table lamp capable of being assembled rapidly |
| CN117712763A (en) * | 2024-02-05 | 2024-03-15 | 东莞市南谷第电子有限公司 | Photovoltaic connector |
| CN117712763B (en) * | 2024-02-05 | 2024-05-17 | 东莞市南谷第电子有限公司 | Photovoltaic connector |
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| CN115064918A (en) * | 2022-07-22 | 2022-09-16 | 烟台云汇智能科技有限公司 | Quick shaping melt head device for metering signal transmission line |
| CN115377704A (en) * | 2022-08-08 | 2022-11-22 | 上海金友金弘智能电气股份有限公司 | Large-overhead-span direct-current photovoltaic cable |
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| DE102008027189A1 (en) * | 2007-07-10 | 2009-01-15 | Pfeffer, Roland | Safety element for photovoltaic arrangement, has two electrical contacts, which are spaced from each other by electrically isolating fuse body |
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| CN117712763A (en) * | 2024-02-05 | 2024-03-15 | 东莞市南谷第电子有限公司 | Photovoltaic connector |
| CN117712763B (en) * | 2024-02-05 | 2024-05-17 | 东莞市南谷第电子有限公司 | Photovoltaic connector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115764410B (en) | 2023-06-02 |
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