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A back-to-back assembly for a photovoltaic power station and a manufacturing method thereof

A photovoltaic power station and photovoltaic cable technology, which is applied in the collection field of solar backplane DC current for photovoltaic power stations, can solve problems such as complex installation, high cost, and large contact resistance, and achieve high electrical insulation performance, low cost, and cost savings Effect

Pending Publication Date: 2018-12-11
天津六0九电缆有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The disadvantages of the combiner box are: large volume, complicated installation, high cost, and large contact resistance
Most combiner boxes are packaged with metal skin, which is not well sealed. It is easy to cause short circuit in rainy season or humid environment, and the long-term exposed skin is easy to rust. In addition, the combiner box occupies a certain space. When checking the fault, it is necessary to check which photovoltaic line is connected. It is not easy to troubleshoot when a fault occurs, time-consuming, labor-intensive, and complicated to operate and install

Method used

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  • A back-to-back assembly for a photovoltaic power station and a manufacturing method thereof
  • A back-to-back assembly for a photovoltaic power station and a manufacturing method thereof
  • A back-to-back assembly for a photovoltaic power station and a manufacturing method thereof

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Effect test

Embodiment Construction

[0034] Such as Figure 1 to Figure 7 As shown, a back-to-back assembly for a photovoltaic power station includes a solar connector 1 , a photovoltaic cable 2 , an aluminum alloy cable 3 , and a confluence joint 4 .

[0035] The photovoltaic cable 2 is composed of a halogen-free flame-retardant photovoltaic cable radiation insulating layer 2-2 and a halogen-free flame-retardant photovoltaic cable radiation sheath 2-3 on the outside of a stranded tinned copper core conductor 2-1. The aluminum alloy cable 3 is composed of an aluminum alloy conductor 3-1 with a cross-linked polyolefin insulating layer 3-2 and a cross-linked polyolefin outer sheath 3-3 in sequence.

[0036] Two photovoltaic cables 2 are a pair, on the aluminum alloy cable between the two ends of an aluminum alloy cable 3, there are three or four exposed aluminum alloy conductors 3-1 at intervals, three or four exposed aluminum alloy conductors 3-1 are respectively connected to two tinned copper core conductors 2-1...

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Abstract

The invention relates to back-to-back assembly for photovoltaic power station and a manufacturing method thereof. The method includes placing a jig under three or four sections of bare aluminum alloyconductor, each bare aluminum alloy conductor being respectively placed in a semi-circular groove II of the jig, two stranded tin-plated copper wire core conductors being respectively arranged in twosemicircular grooves I of each jig, welding two stranded tin-plated copper wire core conductors and an aluminum alloy conductor together by a spot welding machine, buckling a jig on the upper surfaceof each jig, heating the two jigs by a fusion welding machine, and melting the two stranded tin-plated copper wire core conductors and the aluminum alloy conductors into one body; Injection molding abus joint at the joint of aluminum alloy conductor and two stranded tin-plated copper core conductors and placing it into brine for water tightness test; connecting the other ends of the two photovoltaic cables on each bus joint to one solar connector. This module is used to replace the bus box, which meets the customer's requirements.

Description

technical field [0001] The invention relates to a back-to-back assembly for a photovoltaic power station and a manufacturing method thereof, and is particularly suitable for collecting direct current of a solar backboard for a photovoltaic power station. Small currents are gradually collected into large currents, and finally collected into a combiner box. Background technique [0002] Existing solar backplane direct current collection devices for photovoltaic power stations generally use combiner boxes, which gradually collect small currents into large currents, and finally collect them into inverters to convert direct current into alternating current. [0003] The disadvantages of the combiner box are: large volume, complicated installation, high cost, and large contact resistance. Most combiner boxes are packaged with metal skin, which is not well sealed. It is easy to cause short circuit in rainy season or humid environment, and the long-term exposed skin is easy to rust....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02S40/32H02S40/36H02S40/30
CPCH02S40/30H02S40/32H02S40/36Y02E10/50
Inventor 蒋慧李涛朱志欣李东海张媛郭俊婷马文贺
Owner 天津六0九电缆有限公司
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