CN214380811U - Overcurrent protection structure of photovoltaic cable - Google Patents
Overcurrent protection structure of photovoltaic cable Download PDFInfo
- Publication number
- CN214380811U CN214380811U CN202120552796.7U CN202120552796U CN214380811U CN 214380811 U CN214380811 U CN 214380811U CN 202120552796 U CN202120552796 U CN 202120552796U CN 214380811 U CN214380811 U CN 214380811U
- Authority
- CN
- China
- Prior art keywords
- fuse
- photovoltaic cable
- photovoltaic
- crimping
- cables
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
-
- 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
Landscapes
- Fuses (AREA)
Abstract
The utility model relates to a photovoltaic cable's overcurrent protection structure belongs to photovoltaic cable technical field. The technical scheme is as follows: the utility model discloses a photovoltaic cable, including the terminal of two photovoltaic cables (1), the tip of two photovoltaic cables is peeled and is formed photovoltaic cable conductor (2), the both ends of fuse (4) are equipped with cylinder structure (3), the tip axial of cylinder structure is equipped with crimping hole (6), the photovoltaic cable conductor of two photovoltaic cables inserts the crimping downthehole and crimping of cylinder structure respectively and is in the same place, the fuse passes through the crimping with two photovoltaic cables and connects as an organic wholely, fuse and fuse both ends set up casing (5) of moulding plastics with the outside of photovoltaic cable crimping department. The utility model has the advantages that: the photovoltaic cable conductor and the cylindrical structures at the two ends of the fuse are in a compression joint mode, so that the connection is firm and convenient, the connection quality is improved, and the contact resistance of a connecting line is reduced; the fuse has small volume and high safety performance, and the crimping of the two ends of the fuse after injection molding is positioned in the injection molding shell to play a good role in moisture prevention and water prevention.
Description
Technical Field
The utility model relates to a photovoltaic cable's overcurrent protection structure belongs to photovoltaic cable technical field.
Background
When a plurality of photovoltaic strings are connected in parallel, if a certain string has a short-circuit fault, other strings on the direct current bus and the power grid supply short-circuit current to a short-circuit point. If corresponding protective measures are lacked, the photovoltaic module and the equipment such as cables connected with the photovoltaic module can be burnt. At the same time, combustion of the deposits in the vicinity of the equipment may be caused. At present, similar roof photovoltaic fire accidents happen in China, so that protection devices need to be installed on parallel loops of each group of strings to enhance the safety of a photovoltaic power station.
The current standard solution in the photovoltaic industry is to employ fuses for overcurrent protection. Fuses become protection devices commonly used in photovoltaic power stations, the fuses are widely applied to combiner boxes and inverters, international mainstream inverter manufacturers also use the fuses as basic elements for direct current protection, a large number of fuses (fuses) are used for protection in photovoltaic circuits, and the most main reason for adopting the fuses without circuit breakers is to reduce cost. The current photovoltaic power plant ubiquitous fuse trouble is many, the big problem of maintenance work volume, and the leading cause is at photovoltaic station place installation fuse, has increased direct current node, and the fuse box is high to the reliable installation requirement of cable, and the scene is actual to be difficult to accomplish, and the phenomenon of contact failure often appears, arouses to burn out or the direct current draws the arc, leads to converging (overflowing, transshipping) and arouses conflagration or damage equipment. Therefore, it is an urgent problem to be solved to research a photovoltaic fuse with small volume and high safety performance to be installed in a photovoltaic cable.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a photovoltaic cable's overcurrent protection structure, photovoltaic cable conductor end and fuse crimping, it is both firm and convenient, reduced the contact resistance of connecting wire, the fuse is small, and the security performance is high, has solved the problem that exists among the background art.
The technical scheme of the utility model is that:
the utility model provides an overcurrent protection structure of photovoltaic cable, contain two photovoltaic cables, the fuse with mould plastics the casing, the tip of two photovoltaic cables is peeled and is formed the photovoltaic cable conductor, the both ends of fuse are equipped with the cylinder structure, the tip axial of cylinder structure is equipped with the crimping hole, the photovoltaic cable conductor of two photovoltaic cables inserts the downthehole and crimping of the crimping of cylinder structure respectively and is in the same place, the fuse passes through the crimping with two photovoltaic cables and connects as an organic wholely, fuse and fuse both ends and the outside setting of photovoltaic cable crimping department mould plastics the casing.
The inner diameter of the crimping hole of the cylindrical structure is slightly larger than the outer diameter of the photovoltaic cable conductor.
The diameter of the cylinder structure is smaller than that of the fuse, and the length of the cylinder structure is larger than the depth of the hole.
The length of the injection molding shell is larger than that of the fuse.
The fuse is in compression joint with two photovoltaic cables: the two ends of the fuse are respectively provided with a cylindrical structure, and the end part of the cylindrical structure is axially provided with a crimping hole; inserting a photovoltaic cable conductor formed by peeling the end part of one photovoltaic cable into a crimping hole at one end of the fuse, crimping by using crimping pliers, inserting a photovoltaic cable conductor formed by peeling the end part of the other photovoltaic cable into a crimping hole at the other end of the fuse, and crimping by using crimping pliers; the fuse is connected with the two photovoltaic cables into a whole after being pressed; integral injection molding: the fuse, the two ends of the fuse and the compression joint of the photovoltaic cable are integrally molded, an injection molding shell is formed after injection molding, and the two photovoltaic cables, the fuse and the injection molding shell form an integral structure.
The utility model has the advantages that: the photovoltaic cable is connected with the fuse, so that the production is standardized, the quality of a connector is improved, the photovoltaic cable conductor and the cylindrical structures at the two ends of the fuse adopt a compression joint mode, the connection is firm and convenient, the connection quality is improved, and the contact resistance of a connecting line is reduced; the fuse has small volume and high safety performance, and the crimping of the two ends of the fuse after injection molding is positioned in the injection molding shell to play a good role in moisture prevention and water prevention.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the fuse structure of the present invention;
FIG. 3 is a sectional view of the cylindrical structure of the present invention;
in the figure: photovoltaic cable 1, photovoltaic cable conductor 2, cylinder structure 3, fuse 4, casing 5, the hole 6 of moulding plastics.
Detailed Description
The present invention will be further described with reference to the accompanying drawings by way of examples.
The utility model provides an overcurrent protection structure of photovoltaic cable, contain two photovoltaic cable 1, fuse 4 and the casing 5 of moulding plastics, two photovoltaic cable 1's tip is peeled back and is formed photovoltaic cable conductor 2, fuse 4's both ends are equipped with cylinder structure 3, the tip axial of cylinder structure 3 is equipped with crimping hole 6, the photovoltaic cable conductor 2 of two photovoltaic cables inserts the downthehole and crimping of cylinder structure 3 respectively and is in the same place, fuse 4 and two photovoltaic cable 1 are connected as an organic wholely after through the crimping, fuse 4 and the outside setting of 4 both ends of fuse and photovoltaic cable 1 crimping department of fuse mould plastics casing 5.
The inner diameter of the crimping hole of the cylindrical structure 3 is slightly larger than the outer diameter of the photovoltaic cable conductor 2.
The diameter of the cylindrical structure 3 is smaller than that of the fuse 4, and the length of the cylindrical structure 3 is larger than the depth of the hole.
The length of the injection-molded housing 5 is greater than that of the fuse 4.
The fuse is in compression joint with two photovoltaic cables 1: the two ends of the fuse 4 are respectively provided with a cylindrical structure 3, and the end part of the cylindrical structure 3 is axially provided with a crimping hole 6; inserting a photovoltaic cable conductor 2 formed by peeling the end part of one photovoltaic cable 1 into a crimping hole 6 at one end of the fuse, crimping by using crimping pliers, inserting a photovoltaic cable conductor 2 formed by peeling the end part of the other photovoltaic cable 1 into a crimping hole 6 at the other end of the fuse, and crimping by using crimping pliers; the fuse 4 and the two photovoltaic cables 1 are connected into a whole after being pressed; integral injection molding: the fuse 4 and the compression joint of the two ends of the fuse 4 and the photovoltaic cable 1 are integrally molded, the injection molding shell 5 is formed after injection molding, and the two photovoltaic cables 1, the fuse 4 and the injection molding shell 5 form an integral structure.
In the embodiment, the line voltage is 1500V DC or below, the current is 1-60A, the bare photovoltaic cable conductor 2 formed by peeling the end part of one photovoltaic cable 1 is inserted into the crimping hole 6 at one end of the fuse and is crimped by the crimping pliers, the bare photovoltaic cable conductor 2 formed by peeling the end part of the other photovoltaic cable 1 is inserted into the crimping hole 6 at the other end of the fuse and is crimped by the crimping pliers, then the whole is molded by injection, the injection molding shell 5 is formed after the injection molding, and the two photovoltaic cables 1, the fuse 4 and the injection molding shell 5 form an integral structure.
The fuse is 1500V DC 1-60A, and the specification of the photovoltaic cable is 4-10mm2The fuse provides overcurrent protection for each series module of the photovoltaic module, and the maximum current of the overcurrent protection in the circuit is 50A.
The utility model discloses a photovoltaic cable connection fuse accomplishes to standardize production in the mill, improves the connector quality, and the cylindrical structure at photovoltaic cable conductor and fuse both ends adopts the crimping mode, not only firm but also convenient, has improved the connection quality, has reduced the contact resistance of connecting wire; the fuse has small volume and high safety performance, and the crimping of the two ends of the fuse after injection molding is positioned in the injection molding shell to play a good role in moisture prevention and water prevention.
Claims (4)
1. The utility model provides a photovoltaic cable's overcurrent protection structure which characterized in that: contain two photovoltaic cable (1), fuse (4) and casing (5) of moulding plastics, the tip of two photovoltaic cable (1) is peeled off the back and is formed photovoltaic cable conductor (2), the both ends of fuse (4) are equipped with cylinder structure (3), the tip axial of cylinder structure (3) is equipped with crimping hole (6), the photovoltaic cable conductor (2) of two photovoltaic cable insert the crimping of cylinder structure (3) respectively downthehole and the crimping together, fuse (4) are connected as an organic wholely after passing through the crimping with two photovoltaic cable (1), fuse (4) and fuse (4) both ends set up casing (5) of moulding plastics with the outside of photovoltaic cable (1) crimping department.
2. The overcurrent protection structure of a photovoltaic cable of claim 1, wherein: the inner diameter of the crimping hole of the cylindrical structure (3) is slightly larger than the outer diameter of the photovoltaic cable conductor (2).
3. The overcurrent protection structure for a photovoltaic cable according to claim 1 or 2, wherein: the diameter of the cylindrical structure (3) is smaller than that of the fuse (4), and the length of the cylindrical structure (3) is larger than the depth of the hole.
4. The overcurrent protection structure for a photovoltaic cable according to claim 1 or 2, wherein: the length of the injection molding shell (5) is larger than that of the fuse (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120552796.7U CN214380811U (en) | 2021-03-18 | 2021-03-18 | Overcurrent protection structure of photovoltaic cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120552796.7U CN214380811U (en) | 2021-03-18 | 2021-03-18 | Overcurrent protection structure of photovoltaic cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214380811U true CN214380811U (en) | 2021-10-08 |
Family
ID=77973229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120552796.7U Active CN214380811U (en) | 2021-03-18 | 2021-03-18 | Overcurrent protection structure of photovoltaic cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214380811U (en) |
-
2021
- 2021-03-18 CN CN202120552796.7U patent/CN214380811U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110504646A (en) | A kind of line repair device | |
| CN214380811U (en) | Overcurrent protection structure of photovoltaic cable | |
| CN201402859Y (en) | CT open circuit preventing connector of outdoor trolly wire | |
| CN205406467U (en) | Fuse connection structure and connecting seat thereof | |
| CN112992429A (en) | Manufacturing method for installing fuse in integrated photovoltaic cable | |
| CN201690046U (en) | Connector | |
| CN212810713U (en) | Quick wiring and sleeving device for discharging of storage battery of transformer substation | |
| CN201789156U (en) | Solar cable connector | |
| CN205282819U (en) | On --spot wiring connector of detachable and on --spot wiring connector component of detachable | |
| CN213184740U (en) | Cable connector | |
| CN204012686U (en) | A kind of serial interface circuit with lightning protection function | |
| CN207504547U (en) | A kind of shield type rear loading type separable connector | |
| CN206864535U (en) | A kind of safety connects battery terminal soon | |
| CN220774902U (en) | Line connector and photovoltaic device | |
| CN210723800U (en) | Photoelectric component overvoltage protection device convenient to install | |
| CN211980551U (en) | Overvoltage protector for plug-in brushless electric tool | |
| CN217848891U (en) | Novel bus duct | |
| CN205104314U (en) | Lightning arrester | |
| CN214797972U (en) | Transition connector for connecting aluminum alloy photovoltaic cables | |
| CN214533385U (en) | Protection device for wind driven generator avoids tripping operation of high-voltage line | |
| CN220873499U (en) | Electronic molded case circuit breaker connecting plate | |
| CN215988647U (en) | Reverse current protective tube is prevented to new energy automobile power battery direct current high pressure | |
| CN221102522U (en) | Integrated charging socket for power domain battery system | |
| CN208225831U (en) | A kind of photovoltaic fuse | |
| CN216488839U (en) | Three-way power line of industrial plug |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |