CN115764410B - Low-impedance photovoltaic connector with high contact pressure - Google Patents
Low-impedance photovoltaic connector with high contact pressure Download PDFInfo
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- CN115764410B CN115764410B CN202211509434.5A CN202211509434A CN115764410B CN 115764410 B CN115764410 B CN 115764410B CN 202211509434 A CN202211509434 A CN 202211509434A CN 115764410 B CN115764410 B CN 115764410B
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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 melt extrusion head, wherein a first liquid cavity is formed between the hot melt extrusion head and the connecting body, one side of the hot melt extrusion head is provided with a wave structure, and wave crest positions of the two hot melt 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 the second liquid cavity is filled with insulating oil; 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 joint, is a key part for interconnecting various components such as an assembly, a combiner box, a controller, an inverter and the like in a photovoltaic power generation system, and is not negligible. In a photovoltaic system, although the proportion of the connector is small, a plurality of links are needed, and equipment faults can be caused due to the fact that a plurality of constructors have insufficient knowledge on the connector.
Most of the existing photovoltaic connectors adopt plug-in type structures, and the problems of small positive pressure between contact terminals, large self impedance of the photovoltaic connectors and large loss generated when current flows are caused.
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 high contact pressure.
In order to achieve the above object, the present invention is specifically as follows:
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 melt extrusion head;
one end of the connecting body is provided with a threading hole for a lead to penetrate, two opposite guide holes which are arranged on two sides of the threading hole in a concave mode and communicated with the threading hole are formed in the connecting body, and a first shaft hole communicated with the threading hole is formed in the other end of the connecting body in a concave mode;
the two hot melt extrusion heads are correspondingly arranged in the two guide holes in a sealing and sliding manner, a first liquid cavity is formed between the hot melt extrusion heads and the corresponding guide holes, a wave structure is arranged on one side, close to the threading holes, of each hot melt extrusion head, and wave crest positions of the two hot melt extrusion heads are staggered;
the end cover is fixed at the other end of the connecting body, the inner wall of the end cover is internally extended with a shaft body, the end part of the shaft body is abutted against 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 hermetically sleeved on the shaft body in a sliding manner; a second liquid cavity is formed among the end cover, the shaft body, the first shaft hole and the driving piston, and the second liquid cavity is filled with insulating oil;
the spring is sleeved on the shaft body, and two ends of the spring are respectively abutted with 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 the spring;
two first liquid channels are arranged in the connecting body at positions corresponding to the two guide holes, 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 corresponding second liquid cavity;
the extrusion driving assembly is arranged on the connecting body and used for enabling the driving piston to slide against the elastic force of the spring.
The extrusion driving assembly comprises a driving bracket, wherein the driving bracket is provided with two driving rods, and the driving rods movably extend into the connecting body from one end of the connecting body and are abutted with 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 in close fit with the thrust part.
The invention further provides a ratchet arranged along the length direction of the driving rod, and a locking spring piece which is used for being in one-way locking fit with the ratchet on the driving rod is respectively arranged in the connecting body corresponding to the two driving rods.
According to the invention, the connecting body is provided with mounting holes corresponding to each locking spring piece respectively, and the locking spring pieces can be installed in the mounting holes in a pluggable manner.
According to the invention, through holes penetrating through the hot melt extrusion heads are uniformly distributed on each hot melt extrusion head, the through holes are filled with hot melt, and the insulating oil liquid can decompose and release carbon dioxide gas when the temperature exceeds 150 ℃.
The invention further discloses a sealing liquid bag ring which is coaxially arranged with the shaft body is fixed in the end cover, and the sealing liquid bag ring is communicated with the second liquid cavity;
the extrusion driving assembly further comprises a sealing air bag ring coaxially arranged with the connecting body, the driving support is provided with a second shaft hole, the sealing air bag ring is arranged in the second shaft hole, one side, close to the connecting body, of the driving support is provided with a plurality of air chambers, each air chamber is provided with an air compressing piston, the sealing air bag ring is communicated with each air chamber, and the air compressing pistons can slide under the extrusion of the end face of the connecting body, so that the sealing air bag ring is inflated and expanded.
The cross-sectional area of the driving piston is smaller than the sum of the cross-sectional areas of the two hot melt extrusion heads.
According to the invention, the two ends of the threading hole are respectively provided with the guide parts.
The beneficial effects of the invention are as follows: according to the invention, the hot melt extrusion blocks and the first liquid cavities are respectively arranged at 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 under the cooperation of the extrusion driving assembly, the second liquid cavity, the second liquid channel, the first liquid channel and the driving piston, the two hot melt extrusion blocks are driven to move in opposite directions, so that the lap joint parts of the wires generate calendaring deformation, the effective contact area between the two wires is increased, the contact resistance between the two wires 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 present invention as it is being extruded by a hot melt extrusion head;
FIG. 4 is another cross-sectional schematic view of the present invention as the hot melt extrusion head extrudes a wire;
FIG. 5 is a schematic view of the structure of the driving bracket and the locking spring installed on the connecting body;
reference numerals illustrate: 1. a connection body; 2. an end cap; 21. a shaft body; 3. driving a piston; 4. a spring; 5. extruding the driving assembly; 51. a drive bracket; 511. a driving rod; 512. a thrust step; 513. a ratchet; 52. a threaded sleeve; 521. a thrust portion; 53. a sealing balloon ring; 54. a displacer; 6. a hot melt extrusion head; 7. a locking spring plate; 8. a hot melt; 9. sealing the liquid sac ring; 10. a first liquid chamber; 20. a second liquid chamber; 30. a first fluid path; 40. and a second liquid channel.
Detailed Description
The invention will now be described in further detail with reference to the drawings and the specific embodiments, without limiting the scope of the invention.
As shown in fig. 1 to 5, a low-impedance photovoltaic connector with high contact pressure according to the present embodiment includes a connection body 1, an end cap 2, a driving piston 3, a spring 4, an extrusion driving assembly 5 and a hot melt extrusion head 6,
one end of the connecting body 1 is provided with a threading hole for threading a lead, two opposite guide holes which are arranged on two sides of the threading hole in a concave manner and communicated with the threading hole are formed in the connecting body 1, and a first shaft hole communicated with the threading hole is formed in the other end of the connecting body 1 in a concave manner;
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 the hot melt extrusion heads 6 and the corresponding guide holes, a wave structure is arranged on one side, close to the threading holes, 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 abutted against 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 hermetically sleeved on the shaft body 21 in a 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 the second liquid cavity 20 is filled with insulating oil liquid;
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 the 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 slide against the elastic force of the spring 4.
The working mode of the embodiment is as follows: when the wire connecting device is used, the insulating layer of the end of the wire to be connected is removed, the conductor part is exposed, and then the two wires are respectively penetrated into the threading holes from the two ends of the connecting body 1, so that the lap joint part of the two wires is positioned between the two hot melt extrusion heads 6;
then drive piston 3 through extrusion drive assembly 5 promotion is slided for spring 4 compression, the volume of second liquid chamber 20 reduces, insulating oil in the second liquid chamber 20 gets into first liquid chamber 10 through second liquid way 40, first liquid way 30, make the oil pressure in first liquid chamber 10 increase, the promotion hot melt extrusion piece stretches out towards the wire, interval between two hot melt extrusion pieces reduces, until the wave structure of two hot melt extrusion pieces extrudees respectively on the overlap joint portion of wire, compress tightly the overlap joint portion of two wires, because stagger the setting between the crest of two hot melt extrusion pieces at this moment, namely the crest position of one hot melt extrusion piece corresponds with the trough position of another hot melt extrusion piece, 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.
According to the embodiment, the hot melt extrusion blocks and the first liquid cavity 10 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 6 are staggered, so that under the cooperation of the extrusion driving assembly 5, the second liquid cavity 20, the second liquid channel 40, the first liquid channel 30 and the driving piston 3, the two hot melt extrusion blocks are driven to move in opposite directions, the lap joint parts of the wires are enabled to generate calendaring deformation, the effective contact area between the two wires is increased, the contact resistance between the two wires is reduced, the self impedance of the connector is reduced, and the current loss is reduced.
As shown in fig. 2 to 5, based on the above embodiment, further, the extrusion 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 face 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, thereby pushing the driving piston 3 to press the spring 4, and realizing that the two hot melt extrusion blocks compress the lap joint part of the lead; simultaneously, by arranging two driving rods 511 on the driving bracket 51, the driving piston 3 is more balanced in stress and more stable in movement.
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 connection body 1, and the other end of the threaded sleeve 52 has a thrust portion 521; the drive bracket 51 is provided with a thrust step 512 which is in abutting engagement with the thrust portion 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 threaded sleeve 52 pushes the driving bracket 51 to move by utilizing the cooperation of the thrust part 521 and the thrust step 512, so that the operation is more convenient.
As shown in fig. 5, based on the above embodiment, further, the driving rod 511 is arranged with ratchets 513 along the length direction thereof, and the corresponding two driving rods 511 in the connecting body 1 are respectively provided with a locking spring 7 for unidirectional locking engagement with the ratchets 513 on the driving rod 511. In this embodiment, the locking elastic sheet 7 is arranged, and the ratchet 513 is arranged on the driving rod 511, so that the driving support 51 is locked by matching the locking elastic sheet 7 with the ratchet 513, the compression of the two hot melt extrusion blocks on the wires is ensured, the structure is more reliable, and the release is not easy.
As shown in fig. 1 and fig. 5, based on the above embodiment, further, each of the locking spring pieces 7 on the connection body 1 is provided with a mounting hole, and the locking spring pieces 7 are installed in the mounting holes in a pluggable manner. In this embodiment, the installation hole is arranged to facilitate the installation of the locking spring 7, and the locking spring 7 is simultaneously arranged to be pluggable in the installation hole, so that the locking spring 7 is subsequently pulled out from the installation hole to release the locking of the driving bracket 51, thereby releasing the lap joint between the two wires, and the maintenance is more convenient.
As shown in fig. 2 and 3, based on the above embodiment, 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 can decompose and release carbon dioxide gas when the temperature exceeds 150 ℃. Specifically, when the temperature of the lap joint position of the two wires is abnormally increased, the temperature of the hot melt extrusion head 6 is also increased, the hot melt 8 filled in the hot melt extrusion head 6 is melted, and after the hot melt 8 is melted, insulating oil in the first liquid cavity 10 enters the threading hole through the through hole, so that the lap joint of the two wires is in a disconnection state, and 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 disaster naturally due to high temperature, and the structure is safer to use.
As shown in fig. 2 to fig. 4, based on the above embodiment, further, a sealing liquid bag ring 9 coaxially disposed with the 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;
the extrusion driving assembly 5 further comprises a sealing air bag ring 53 coaxially arranged with the connecting body 1, the driving support 51 is provided with a second shaft hole, the sealing air bag ring 53 is arranged in the second shaft hole, one side, close to the connecting body 1, of the driving support 51 is provided with a plurality of air chambers, each air chamber is provided with an air compressing piston 54, the sealing air bag ring 53 is communicated with each air chamber, and the air compressing pistons 54 can slide under the extrusion of the end face of the connecting body 1, so that the sealing air bag ring 53 is inflated and expanded.
Specifically, when the driving bracket 51 pushes the driving piston 3 to slide, the insulating oil in the second liquid cavity 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, sealing between the connector and the wire is realized, and when the air compressing piston 54 contacts with the end part of the connecting body 1 along with the movement of the driving bracket 51, the air compressing piston 54 is retracted, so that gas in the air chamber is filled into the sealing air bag ring 53, the sealing air bag ring 53 is expanded and coated on the outer wall of the wire, and sealing between the connector and the wire is realized.
Further, based on the above embodiment, the sectional area of the driving piston 3 is smaller than the sum of the sectional areas of the two hot melt extrusion heads 6. In this embodiment, 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 hot-melt extrusion head 6 tightly presses the lap portion of the wire more firmly.
Based on the above embodiment, further, two ends of the threading hole are respectively provided with a guiding part. According to the embodiment, the guide part is arranged, so that the lap part of the wire can be more easily penetrated into the threading hole, and the operation is more convenient.
The foregoing description is only one preferred embodiment of the invention, and therefore all changes and modifications that come within the meaning and range of equivalency of the structures, features and principles of the invention are intended to be embraced therein.
Claims (9)
1. The 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 assembly (5) and a hot melt extrusion head (6);
one end of the connecting body (1) is provided with a threading hole for threading a lead, two opposite guide holes which are arranged on two sides of the threading hole in a concave mode and communicated with the threading hole are formed in the connecting body (1), and a first shaft hole communicated with the threading hole is formed in the other end of the connecting body (1) in a concave mode;
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 the hot melt extrusion heads (6) and the corresponding guide holes, a wave structure is arranged on one side, close to the threading holes, 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 abutted against 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 hermetically sleeved on the shaft body (21) in a 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 the second liquid cavity (20) is filled with insulating oil;
the spring (4) is sleeved on the shaft body (21), and two ends of the spring (4) are respectively abutted with 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 the 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); two second liquid channels (40) are arranged on the shaft body (21) 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. A low-impedance photovoltaic connector with high contact pressure according to claim 1, characterized in that the extrusion 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 then are abutted against the end face of the driving piston (3).
3. A low-impedance photovoltaic connector with high contact pressure according to claim 2, characterized in that said extrusion driving assembly (5) further comprises a threaded sleeve (52), one end of said threaded sleeve (52) being screwed onto the outer wall of one end of the connecting body (1), the other end of said threaded sleeve (52) having a thrust portion (521); the driving bracket (51) is provided with a thrust step (512) which is in close fit with the thrust part (521).
4. The low-impedance photovoltaic connector with high contact pressure according to claim 2, wherein the driving rods (511) are provided with ratchets (513) along the length direction thereof, and the corresponding two driving rods (511) in the connecting body (1) are respectively provided with a locking spring piece (7) for being in unidirectional locking fit with the ratchets (513) on the driving rods (511).
5. The low-impedance photovoltaic connector with high contact pressure according to claim 4, wherein the connecting body (1) is provided with a mounting hole corresponding to each locking spring piece (7), and the locking spring pieces (7) are installed in the mounting holes in a pluggable manner.
6. The low-impedance photovoltaic connector with high contact pressure according to claim 2, wherein through holes penetrating through the hot melt extrusion heads (6) are uniformly distributed on each hot melt extrusion head (6), hot melt (8) is filled in the through holes, and the insulating oil liquid can decompose and release carbon dioxide gas when the temperature exceeds 150 ℃.
7. The low-impedance photovoltaic connector with high contact pressure according to claim 6, characterized in that a sealing liquid bag ring (9) coaxially arranged with the 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);
the extrusion driving assembly (5) further comprises a sealing air bag ring (53) coaxially arranged with the connecting body (1), the driving support (51) is provided with a second shaft hole, the sealing air bag ring (53) is arranged in the second shaft hole, one side, close to the connecting body (1), of the driving support (51) is provided with a plurality of air chambers, each air chamber is provided with an air compressing piston (54), the sealing air bag ring (53) is communicated with each air chamber, and the air compressing pistons (54) can slide under the extrusion of the end face of the connecting body (1) so that the sealing air bag ring (53) is inflated.
8. A low-impedance photovoltaic connector with high contact pressure according to claim 2, characterized in that 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 low-impedance photovoltaic connector with high contact pressure according to claim 1, wherein the two ends of the threading hole are respectively provided with a guide portion.
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 |
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| 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 CN115764410A (en) | 2023-03-07 |
| CN115764410B true 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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| CN117190094B (en) * | 2023-11-01 | 2024-02-09 | 惠州市沃生照明有限公司 | Desktop table lamp capable of being assembled rapidly |
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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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2022
- 2022-11-29 CN CN202211509434.5A patent/CN115764410B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| EP2249439A2 (en) * | 2009-05-06 | 2010-11-10 | Bogner GmbH & Co. KG | Connector for photovoltaic systems |
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| CN115764410A (en) | 2023-03-07 |
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