CN112992429A - Manufacturing method for installing fuse in integrated photovoltaic cable - Google Patents
Manufacturing method for installing fuse in integrated photovoltaic cable Download PDFInfo
- Publication number
- CN112992429A CN112992429A CN202110288192.0A CN202110288192A CN112992429A CN 112992429 A CN112992429 A CN 112992429A CN 202110288192 A CN202110288192 A CN 202110288192A CN 112992429 A CN112992429 A CN 112992429A
- Authority
- CN
- China
- Prior art keywords
- fuse
- photovoltaic cable
- crimping
- photovoltaic
- injection molding
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 238000002788 crimping Methods 0.000 claims abstract description 43
- 238000001746 injection moulding Methods 0.000 claims abstract description 27
- 239000004020 conductor Substances 0.000 claims abstract description 20
- 230000006835 compression Effects 0.000 claims abstract description 11
- 238000007906 compression Methods 0.000 claims abstract description 11
- 230000002265 prevention Effects 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000012086 standard solution Substances 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/0036—Details
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
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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
- 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
Abstract
The invention relates to a manufacturing method for installing a fuse in an integrated photovoltaic cable, and belongs to the technical field of photovoltaic cables. The technical scheme is as follows: 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 at the other end of the fuse, and crimping by using crimping pliers; the fuse (4) and the compression joint of the two ends of the fuse and the photovoltaic cable are integrally molded, an injection molding shell (5) is formed after injection molding, and the two photovoltaic cables, the fuse and the injection molding shell form an integral structure. The invention has the beneficial effects that: the photovoltaic cable conductor and the cylindrical structures at the two ends of the fuse adopt a compression joint mode, so that the connection is firm and convenient, and the connection quality is improved; 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 invention relates to a manufacturing method for installing a fuse in an integrated photovoltaic cable, and belongs to the technical field of photovoltaic cables.
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.
Disclosure of Invention
The invention aims to provide a manufacturing method for installing a fuse in an integrated photovoltaic cable, wherein the end of a conductor of the photovoltaic cable is in compression joint with the fuse, so that the method is firm and convenient, the contact resistance of a connecting wire is reduced, the fuse is small in size and high in safety performance, and the problems in the background art are solved.
The technical scheme of the invention is as follows:
a manufacturing method for installing a fuse in an integrated photovoltaic cable comprises the following steps:
firstly, 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;
secondly, 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 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 invention has the beneficial effects 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 diagram of a fuse according to the present invention;
FIG. 3 is a cross-sectional view of a cylindrical structure according to the present invention;
in the figure: photovoltaic cable 1, photovoltaic cable conductor 2, cylinder structure 3, fuse 4, the casing of moulding plastics 5, crimping hole 6.
Detailed Description
The present invention will be further described by way of examples with reference to the accompanying drawings.
A manufacturing method for installing a fuse in an integrated photovoltaic cable comprises the following steps:
firstly, 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;
secondly, 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.
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.
In this embodiment, contain two photovoltaic cables 1, fuse 4 and the casing 5 of moulding plastics, the tip of two photovoltaic cables 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 cables inserts the downthehole crimping of cylinder structure 3 respectively and is in the same place of crimping, fuse 4 and two photovoltaic cables 1 are connected as an organic whole after through the crimping, fuse 4 and fuse 4 both ends set up the casing 5 of moulding plastics with the outside of photovoltaic cable 1 crimping department.
The method comprises the steps that line voltage is 1500V DC or below, current is 1-60A, a bare photovoltaic cable conductor 2 formed by peeling the end part of one photovoltaic cable 1 is inserted into a crimping hole 6 at one end of a fuse and is crimped by a crimping clamp, a bare photovoltaic cable conductor 2 formed by peeling the end part of the other photovoltaic cable 1 is inserted into a crimping hole 6 at the other end of the fuse and is crimped by the crimping clamp, then integral injection molding is carried out, an 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 photovoltaic cable is connected with the fuse, so that the standard production in a factory is realized, the quality of the connector is improved, the photovoltaic cable conductor and the cylinder 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.
Claims (4)
1. A manufacturing method for installing a fuse in an integrated photovoltaic cable is characterized by comprising the following steps:
the fuse is in compression joint with two photovoltaic cables (1):
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 and connected;
secondly, 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, an 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.
2. A method of making a fuse mounted in an integrated photovoltaic cable as claimed in 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. A method of making a fuse mounted in an integrated photovoltaic cable as claimed in claim 1 or claim 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. A method of making a fuse mounted in an integrated photovoltaic cable as claimed in claim 1 or claim 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 |
|---|---|---|---|
| CN202110288192.0A CN112992429A (en) | 2021-03-18 | 2021-03-18 | Manufacturing method for installing fuse in integrated photovoltaic cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110288192.0A CN112992429A (en) | 2021-03-18 | 2021-03-18 | Manufacturing method for installing fuse in integrated photovoltaic cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112992429A true CN112992429A (en) | 2021-06-18 |
Family
ID=76332863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110288192.0A Pending CN112992429A (en) | 2021-03-18 | 2021-03-18 | Manufacturing method for installing fuse in integrated photovoltaic cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112992429A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2258353A (en) * | 1991-08-01 | 1993-02-03 | Telematic Systems Ltd | Excess current protection in coaxial cable |
| JPH0973819A (en) * | 1995-09-05 | 1997-03-18 | Yazaki Corp | Tape wire with fuse and manufacture thereof |
| US5726851A (en) * | 1996-04-10 | 1998-03-10 | Joslyn Electronic Systems Corporation | Coaxial cable fuse apparatus |
| CN101997241A (en) * | 2009-08-18 | 2011-03-30 | 通用电气公司 | Fused wiring harness for a photovoltaic system |
| CN208571125U (en) * | 2018-07-02 | 2019-03-01 | 天津六0九电缆有限公司 | A kind of photovoltaic wire harness assembly |
-
2021
- 2021-03-18 CN CN202110288192.0A patent/CN112992429A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2258353A (en) * | 1991-08-01 | 1993-02-03 | Telematic Systems Ltd | Excess current protection in coaxial cable |
| JPH0973819A (en) * | 1995-09-05 | 1997-03-18 | Yazaki Corp | Tape wire with fuse and manufacture thereof |
| US5726851A (en) * | 1996-04-10 | 1998-03-10 | Joslyn Electronic Systems Corporation | Coaxial cable fuse apparatus |
| CN101997241A (en) * | 2009-08-18 | 2011-03-30 | 通用电气公司 | Fused wiring harness for a photovoltaic system |
| CN208571125U (en) * | 2018-07-02 | 2019-03-01 | 天津六0九电缆有限公司 | A kind of photovoltaic wire harness assembly |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210618 |