CN208572025U - A kind of back-to-back component of photovoltaic plant - Google Patents
A kind of back-to-back component of photovoltaic plant Download PDFInfo
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- CN208572025U CN208572025U CN201821369581.6U CN201821369581U CN208572025U CN 208572025 U CN208572025 U CN 208572025U CN 201821369581 U CN201821369581 U CN 201821369581U CN 208572025 U CN208572025 U CN 208572025U
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- aluminium alloy
- cable
- photovoltaic
- connector
- alloy cable
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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 utility model relates to a kind of back-to-back components of photovoltaic plant, on aluminium alloy cable between an aluminium alloy cable both ends, interval be equipped with three at or aluminium alloy conductor exposed everywhere, exposed aluminium alloy conductor is connect with the spaced two tinned wird core conductors in a pair of of photovoltaic cable one end respectively at three or everywhere, it is molded a confluence connector respectively in the aluminium alloy conductor at every place and the junction of every two twisted tinned wird core conductors and periphery, the confluence connector of injection molding is three or four, the other end of each pair of photovoltaic cable is separately connected a solar energy connector；The specification of photovoltaic cable is the 8AWG photovoltaic cable of 10mm2, and the specification of aluminium alloy cable is the aluminium alloy cable of 4/0,100mm2.This component replaces the band use of header box, meets the requirement of client.
Description
Technical field
The utility model relates to a kind of back-to-back components of photovoltaic plant, particularly suitable for photovoltaic plant solar energy backboard
DC current collects, and low current gradually accumulates high current, is finally pooled to header box.
Background technique
The aggregating apparatus of existing photovoltaic plant solar energy backboard DC current, generally uses header box, and header box will
Low current gradually accumulates high current, is finally pooled to inverter, is transformed into exchange by direct current.
The shortcoming of header box is: volume is big, installation is complicated, at high cost, contact resistance is big.Header box mostly uses gold
Belong to crust packaging, poor sealing be easy to cause short circuit under rainy season or wet environment, and long-term exposed crust is easy corrosion, separately
Outside, header box occupies certain space and needs investigation when checking failure specifically which photovoltaic wire connecting portion, when failure are not easy
Investigation, it is time-consuming, it takes a lot of work, operation installation is complicated.
In view of the shortcoming of header box, user to our company provide it is a kind of it is small in size, at low cost, easy for installation,
Back-to-back component that is convenient for safeguarding, being used with the alternative header box for collecting function, back-to-back component meeting during collecting
It is subjected to being exposed to the sun for a long time, wind, drench with rain, the influence of the adverse circumstances such as lightning impulse, therefore it is required that component has pulling capacity back-to-back
By force, the performances such as UV resistant, high-low temperature resistant.
Since back-to-back component use is in Special environment such as plateau, basins, there should be light aging resisting, thunder-lightning, prevent
The features such as water, high electrical insulation capability, especially in the winter of low temperature severe cold, material still has resilience high, should ensure that cable
Harness can freely be bent not fracture of wire.
Since photovoltaic power generation makes cable Yi Fare when transmitting electric current, therefore it is required that back-to-back component uses material also
There should be phenomena such as temperature resistant grade is high, anti-flammability is high, prevents transmission line fever on fire.
Summary of the invention
Situation in view of the prior art and user require, and the utility model provides a kind of photovoltaic plant with back-to-back group
Part, the utility model structure are designed as, at three be equipped on the aluminium alloy cable between an aluminium alloy cable both ends or four
Locate on exposed aluminium alloy conductor, is separately connected two tinned wird core conductors of a pair of of photovoltaic cable, can replace header box
It uses, and increases an injection molding confluence connector in every place's conductor connection, prevent the generation of accident.
The connection type of every place's contact is connected using hot weld, and copper conductor and aluminium conductor is remelted one through Overheating Treatment
It rises, fusion process is added without other materials, reduces contact resistance, reduces the area of joint, improves joint drawing
Power.
To achieve the above object, used technical solution is the utility model: a kind of back-to-back component of photovoltaic plant,
Including solar energy connector, photovoltaic cable, aluminium alloy cable, the photovoltaic cable outside twisted tinned wird core conductor by successively setting
There are halogen-free flameproof photovoltaic cable irradiation insulating layer, halogen-free flameproof photovoltaic cable irradiation sheath to constitute；The aluminium alloy cable is by aluminium
Cross-linked polyolefin insulating layer is successively arranged outside alloy conductor, cross-linked polyolefin oversheath is constituted, it is characterised in that: further include confluence
Connector, two photovoltaic cables is a pair, and on the aluminium alloy cable between an aluminium alloy cable both ends, interval is set
Have an aluminium alloy conductor exposed at three or everywhere, at three or aluminium alloy conductor exposed everywhere respectively with a pair of of photovoltaic cable one end
Spaced two tinned wird core conductors connection, aluminium alloy conductor and every two twisted tinned wird core conductors at every place
Junction and periphery be molded a confluence connector respectively, the confluence connector of injection molding is three or four, each pair of photovoltaic electric
The other end of cable is separately connected a solar energy connector；
The specification of photovoltaic cable is the 8AWG photovoltaic cable of 10mm2, and the specification of aluminium alloy cable is 4/0,100mm2
Aluminium alloy cable.
The beneficial effects of the utility model are: the structure of the utility model designs, for the band use of header box, at one
Aluminium alloy cable between aluminium alloy cable both ends be equipped with three at or aluminium alloy conductor exposed everywhere on, be separately connected one
To two tinned wird core conductors of photovoltaic cable, easy for installation, easy to operate, failure can pinpoint investigation, once go out
Existing failure only replaces defective device, without there is major part replacement, generates electricity especially for centralization and generates electricity on a large scale
Cluster is particularly important.
An injection molding confluence connector is increased in every place's conductor connection, makes it have excellent insulation performance, leakproofness
It is good, it is therefore prevented that the generation of short trouble.
The utility model aluminium alloy conductor and tinned wird core conductor connection type use hot weld mode.Existing market
On aluminium alloy cable and copper conductor combination mainly using the form of hook, i.e., with a metal hanger by the plating of photovoltaic cable
Tin copper conductor is mutually linked and is compressed with aluminum alloy cable conductor, and this mode contact resistance is big, and junction pulling capacity is small.
Using hot weld mode, welding conductors pulling capacity is considerably increased, fusion process is added without other materials, reduces and connect
Electric shock resistance, reduces the area of joint, improves joint pulling capacity.
The utility model is small in size, though the small function of undertaking function and have header box completely of single connector, cost
Low, the cost of prior art header box is generally thousand yuan of 4-5, and the cost of the utility model is hundred yuan of general 1-2, save the cost 20
More times, in short, meeting the requirement of client.
Detailed description of the invention
Fig. 1 is that there are four the structural schematic diagrams of confluence connector for the utility model dress；
Fig. 2 is the enlarged drawing schematic diagram of Fig. 1 structure A；
Fig. 3 is that there are three the structural schematic diagrams of confluence connector for the utility model dress；
Fig. 4 is the structural schematic diagram of the utility model photovoltaic cable；
Fig. 5 is the structural schematic diagram of the utility model aluminium alloy cable；
Fig. 6 is the structural schematic diagram of the utility model jig；
Fig. 7 is the welded condition schematic diagram of the utility model photovoltaic cable and aluminium alloy cable.
Specific embodiment
As shown in Figures 1 to 7, the back-to-back component of a kind of photovoltaic plant, including solar energy connector 1, photovoltaic cable 2,
Aluminium alloy cable 3 further includes confluence connector 4.
Photovoltaic cable 2 is by being successively arranged halogen-free flameproof photovoltaic cable irradiation insulating layer outside twisted tinned wird core conductor 2-1
2-2, halogen-free flameproof photovoltaic cable irradiation sheath 2-3 are constituted.Aluminium alloy cable 3 is by being successively arranged crosslinking outside aluminium alloy conductor 3-1
Polyolefin insulation layer 3-2, cross-linked polyolefin oversheath 3-3 are constituted.
Two photovoltaic cables 2 is a pair, and on the aluminium alloy cable between 3 both ends of aluminium alloy cable, interval is set
Have exposed at a three or everywhere aluminium alloy conductor 3-1, at three or aluminium alloy conductor 3-1 exposed everywhere respectively with a pair of of photovoltaic electric
The spaced two tinned wird core conductors 2-1 connection in 2 one end of cable is twisted in the aluminium alloy conductor 3-1 at every place and every two
The junction and periphery of tinned wird core conductor 2-1 is molded a confluence connector 4 respectively, and the confluence connector 4 of injection molding is three
A or four, the other end of each pair of photovoltaic cable 2 is separately connected a solar energy connector 1.
The specification of photovoltaic cable 2 is the 8AWG photovoltaic cable of 10mm2, and the specification of aluminium alloy cable 3 is 4/0,
The aluminium alloy cable of 100mm2.
Confluence connector 4 is rectangle, and the front-back of confluence connector 4 is cambered surface 4-1, above, below, left side, right side
It is plane.
3 length of aluminium alloy cable is 178 meters, sets that there are four converge on the aluminium alloy cable between 3 both ends of aluminium alloy cable
Flow connector 4, the distance between four 4 central axis of confluence connector and 3 both ends of aluminium alloy cable and adjacent 4 center of confluence connector
The distance between axis is 35.6cm.
3 length of aluminium alloy cable is 128 meters, sets that there are three converge on the aluminium alloy cable between 3 both ends of aluminium alloy cable
Flow connector 4, the distance between three 4 central axis of confluence connector and 3 both ends of aluminium alloy cable and adjacent 4 center of confluence connector
The distance between axis is 32cm.
Jig 5 is rectangle, horizontal respectively on the face of jig 5 to be equipped with two with vertical equipped with II 5-2 of semi-circular groove
I 5-1 of semi-circular groove, two semi-circular grooves, I 5-1 and II 5-2 of semi-circular groove are communicated.
A kind of photovoltaic plant production method of back-to-back component, steps are as follows:
Halogen-free flameproof photovoltaic cable on three pairs or four pairs of 2 one end of photovoltaic cable is irradiated insulation by first step cable handling
Layer 2-2 and halogen-free flameproof photovoltaic cable irradiation sheath 2-3 are peeled off, are stayed one section of twisted tinned wird core conductor 2-1 respectively, are passed through mould
Tool punching press makes twisted tinned wird core conductor 2-1 on one side be plane, and another side is cambered surface；
By cross-linked polyolefin insulating layer 3-2 and crosslinking at three of position between 3 both ends of aluminium alloy cable or everywhere
Polyolefin oversheath 3-3 is peeled off, is reserved three sections or four sections exposed aluminium alloy conductor 3-1, is made three sections or four by mould punching
The exposed aluminium alloy conductor 3-1 of section is plane on one side, and another side is cambered surface.
Second step cable welding, below the three sections or four sections exposed aluminium alloy conductor 3-1 on aluminium alloy cable 3 point
Not Fang Zhi one piece of jig 5, every section of exposed aluminium alloy conductor 3-1 plane upward and is respectively placed in the horizontally disposed semicircle of jig 5
In II 5-2 of shape slot, in three pieces or four pieces of I 5-1 of respective vertically disposed two semi-circular grooves of jigs 5, a pair of of light is placed respectively
The twisted tinned wird core conductor 2-1 of two of 2 one end of luff cable, the plane of the twisted tinned wird core conductor 2-1 of each pair of two
It is overlapped in the plane of exposed aluminium alloy conductor 3-1 and is heat-treated downward and respectively, taken by mash welder by each pair of
Two to be connected together twisted tinned wird core conductor 2-1 and aluminium alloy conductor 3-1 welds together, in the upper of every piece of jig 5
One piece of jig 5 of spiral-lock is fixed together and applies pressure again in face, and weld together two are twisted after docking and plate by two pieces of jigs 5
Tin copper wire core conductor 2-1 and exposed aluminium alloy conductor 3-1 is pressed on two pieces of jigs, 5 corresponding semi-circular grooves II respectively
In 5-2 and two I 5-1 of semi-circular groove, and two pieces of jigs 5 are heated by fusing soldering welder, makes two twisted tinned wird core conductors
2-1 conductor fuses into one under the action of high moderate pressure with aluminium alloy conductor 3-1.
Third step injection molding, three pieces or four pieces of jigs 5 are removed, the aluminium alloy conductor 3-1 to fuse into one at three or everywhere
It is molded a confluence connector 4 respectively with the junction of two twisted tinned wird core conductor 2-1 and periphery and constitutes initial component.
Each initial component is put into the sodium chloride saline solution of concentration 25% and impregnates 2 hours progress water by the detection of the 4th step
Tightness test, applies 1kV DC voltage after impregnating 2 hours, insulation resistance should be qualification not less than 4G Ω.
5th step installs solar energy connector, and the other end of two photovoltaic cables 2 in each initial component is separately connected
One solar energy connector 1.
Confluence connector 4 is made of the raw material of following parts by weight: TPE is 100 parts, and EVA is 25 parts, and antioxidant is 2 parts, is resisted
Copper agent is 3 parts, and decabromodiphenyl oxide is 12 parts, and antimony oxide is 8 parts, and TAIC is 2 parts, and high-carbon black pigment is 6 parts, zinc stearate
It is 1 part.
The difficult point of material is that anti-flammability is provided simultaneously with high resiliency, can guarantee photovoltaic cable height under low temperature and wet environment
The transfer function of efficiency, and the insulation performance of material cannot be reduced.
The formula that the utility model confluence joint material uses, with the characteristic that anti-flammability and high resiliency are provided simultaneously with, tool
There is the features such as light aging resisting, thunder-lightning, waterproof, high electrical insulation capability, especially in the winter of low temperature severe cold, material still has
Resilience is high, guarantees that core of a cable can freely be bent not fracture of wire, can guarantee photovoltaic cable height under low temperature and wet environment
The characteristics of transfer function of efficiency.
The material of jig 5 is tungsten carbide, can not to avoid under high temperature, pressure condition cable conductor and jig from fusing into one
It removes, it is just not in jig and cable when welding in this way that the metal phase that jig uses, which has higher fusing point for copper conductor,
The phenomenon that copper conductor is welded together.
Claims (4)
1. a kind of back-to-back component of photovoltaic plant, including solar energy connector (1), photovoltaic cable (2), aluminium alloy cable (3),
The photovoltaic cable (2) is by being successively arranged halogen-free flameproof photovoltaic cable irradiation insulating layer outside twisted tinned wird core conductor (2-1)
(2-2), halogen-free flameproof photovoltaic cable irradiate sheath (2-3) and constitute；The aluminium alloy cable (3) by aluminium alloy conductor (3-1) outside
It is successively arranged cross-linked polyolefin insulating layer (3-2), cross-linked polyolefin oversheath (3-3) is constituted, it is characterised in that: further include confluence
Connector (4), two photovoltaic cables (2) is a pair, on the aluminium alloy cable between aluminium alloy cable (3) both ends,
Interval be equipped at three or aluminium alloy conductor exposed everywhere (3-1), at three or aluminium alloy conductor exposed everywhere (3-1) respectively
It is connect with the spaced two tinned wird core conductors (2-1) in a pair of of photovoltaic cable (2) one end, the aluminium alloy conductor at every place
The junction and periphery of (3-1) and every two twisted tinned wird core conductors (2-1) are molded a confluence connector (4) respectively, note
Moulding molding confluence connector (4) is three or four, and the other end of each pair of photovoltaic cable (2) is separately connected a solar energy connection
Device (1)；
The specification of photovoltaic cable (2) is the 8AWG photovoltaic cable of 10mm2, and the specification of aluminium alloy cable (3) is 4/0,
The aluminium alloy cable of 100mm2.
2. a kind of back-to-back component of photovoltaic plant according to claim 1, it is characterised in that: the confluence connector (4)
Front-back for rectangle, confluence connector (4) is cambered surface (4-1), and above, below, left side, right side are plane.
3. a kind of back-to-back component of photovoltaic plant according to claim 1, it is characterised in that: the aluminium alloy cable
(3) length is 178 meters, is set on the aluminium alloy cable between aluminium alloy cable (3) both ends there are four converging connector (4), four
Converge the distance between connector (4) central axis and aluminium alloy cable (3) both ends and adjacent confluence connector (4) central axis it
Between distance be 35.6cm.
4. a kind of back-to-back component of photovoltaic plant according to claim 1, it is characterised in that: the aluminium alloy cable
(3) length is 128 meters, is set on the aluminium alloy cable between aluminium alloy cable (3) both ends there are three converging connector (4), three
Converge the distance between connector (4) central axis and aluminium alloy cable (3) both ends and adjacent confluence connector (4) central axis it
Between distance be 32cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821369581.6U CN208572025U (en) | 2018-08-24 | 2018-08-24 | A kind of back-to-back component of photovoltaic plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821369581.6U CN208572025U (en) | 2018-08-24 | 2018-08-24 | A kind of back-to-back component of photovoltaic plant |
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| Publication Number | Publication Date |
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| CN208572025U true CN208572025U (en) | 2019-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821369581.6U Active CN208572025U (en) | 2018-08-24 | 2018-08-24 | A kind of back-to-back component of photovoltaic plant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108988777A (en) * | 2018-08-24 | 2018-12-11 | 天津六0九电缆有限公司 | A kind of photovoltaic plant back-to-back component and production method |
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2018
- 2018-08-24 CN CN201821369581.6U patent/CN208572025U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108988777A (en) * | 2018-08-24 | 2018-12-11 | 天津六0九电缆有限公司 | A kind of photovoltaic plant back-to-back component and production method |
| CN108988777B (en) * | 2018-08-24 | 2024-03-15 | 天津六0九电缆有限公司 | Back-to-back assembly for photovoltaic power station and manufacturing method |
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