AU2021463477A1

AU2021463477A1 - Environmentally friendly anti-termite photovoltaic wire harness

Info

Publication number: AU2021463477A1
Application number: AU2021463477A
Authority: AU
Inventors: Zhenqing MA; Wenna SONG; Dazhuang SUN; Xinguo Wang; Lian Xu; Jianwei YANG; Wei Zhang
Original assignee: Jiangsu Hengtong Power Cable Co Ltd
Current assignee: Jiangsu Hengtong Power Cable Co Ltd
Priority date: 2021-09-10
Filing date: 2021-12-30
Publication date: 2023-11-16
Also published as: WO2023035505A1; CN215730964U

Abstract

The present application discloses an environmentally friendly anti-termite photovoltaic wire harness, comprising a plurality of cable assemblies. Each cable assembly comprises two cables, each cable having a binding section and a non-binding section; all of the binding sections of the plurality of cable assemblies extend along the same main line, the non-binding sections extend along a branch line, and the non-free end of each binding section is bound together with another binding section by means of binding tape. In two cables of the same cable assembly, the free end of the binding section and the free end of the non-binding section of one cable are provided with a positive connector and a negative connector, respectively, and the free end of the binding section and the free end of the non-binding section of the other cable are connected to a negative connector and a positive connector, respectively. Each cable comprises a tin-plated soft conductor, an insulating jacket, an anti-termite jacket, and an outer jacket, which are sleeved in sequence from inside to outside.

Description

ENVIRONMENTALLY FRIENDLY ANTI-TERMITE PHOTOVOLTAIC WIRE HARNESS

This application claims priority to Chinese Patent Application No. 202122190093.7 filed with

the China National Intellectual Property Administration (CNIPA) on Sep. 10, 2021, the

disclosure of which is incorporated herein by reference in its entirety.

TECHNICAL FIELD

The present application belongs to the field of photovoltaic cable technology and, for example,

relates to an environmentally friendly anti-termite photovoltaic harness.

BACKGROUND

The information disclosed in this background section is merely intended to enhance an

understanding of the general background of the present application and is not to be construed as

admitting or implying in any form that the information constitutes the technology known to

those skilled in the art.

In recent years, problems such as environmental pollution and ecological imbalance caused by

over-reliance on traditional fossil fuels have become increasingly apparent, and the

development of renewable energy has become urgent. Photovoltaic power generation has

developed rapidly due to its advantages such as safety, reliability, no restriction on resource

distribution, and a short construction period. The demand for photovoltaic cables has increased

considerably. Photovoltaic dedicated cables are configured to be connected in series between

!0 components and to connect components to direct current (DC) distribution boxes and combiner

boxes. Photovoltaic cables are used in large quantities, are widely distributed, and require high

stability. The photovoltaic harness in the related art has the advantages of being suitable for use

in harsh environments such as sun exposure, rain, wind, and pulling, and makes the on-site

wiring orderly, simple, and easy to maintain. However, in areas with a high distribution of termites, such cables are prone to damage from termite biting, resulting in short circuits, open circuits, and other problems, affecting the operation of a photovoltaic system, and reducing the reliability of the photovoltaic system.

SUMMARY

The technical problem to be solved by the present application is how to prevent a photovoltaic

cable harness from termites.

The present application provides an environmentally friendly anti-termite photovoltaic harness,

which includes multiple cable assemblies, where each cable assembly includes two cables.

Each cable has a bound section and a non-bound section at different positions along a length

direction of the cable. All bound sections of the multiple cable assemblies extend along the

same main line, and free ends of all the bound sections are located at the same end of the main

line. The non-bound section extends along a branch line, and a free end of the non-bound

section is located at a free end of the branch line.

A non-free end of each bound section is bound together with other bound sections by a binding

strap.

Of the two cables of the same cable assembly, a free end of the bound section and a free end of

the non-bound section of one cable are connected to a positive electrode connector and a

negative electrode connector, respectively, and a free end of the bound section and a free end of

the non-bound section of the other cable are connected to a negative electrode connector and a

!0 positive electrode connector, respectively.

Each cable includes a tin-plated soft conductor, an insulating sheath, an anti-termite protective

sheath, and an outer protective sheath, which are sequentially sleeved from inside out.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a structural diagram of an environmentally friendly anti-termite photovoltaic harness

according to the present application.

FIG. 2 is a cross-sectional view of a single cable of an environmentally friendly anti-termite

photovoltaic harness according to the present application.

Reference list

1 cable assembly

11 cable

111 tin-plated soft conductor

112 insulating sheath

113 anti-termite protective sheath

114 outer protective sheath

12 positive electrode connector

13 negative electrode connector

2 binding strap

3 first cable unit

4 second cable unit

DETAILED DESCRIPTION

Hereinafter embodiments of the present application are described in detail in conjunction with

!0 drawings and embodiments.

It is to be noted that the following detailed description is exemplary and is intended to provide

further improvements to the present application. Unless otherwise specified, all technical and

scientific terms used herein have meanings the same as those commonly understood by those

skilled in the art to which the present application pertains. It is to be noted that the terms used herein are for describing embodiments and are not intended to limit example embodiments according to the present application. As used herein, singular forms are intended to include plural forms unless otherwise expressly indicated in the context. Additionally, it is to be understood that the terms "including" and/or "comprising" used in the specification are intended to indicate the existence of features, steps, operations, devices, elements, and/or combinations thereof. In the present disclosure, orientations or position relations indicated by terms such as

"above", "below", "left", "right", "front", "back", "vertical", "horizontal", "side", and "bottom"

are based on the drawings. These terms are merely relational terms for facilitating the

description of the structural relationships between components or elements in the present

disclosure and do not specifically refer to any component or element in the present disclosure.

Thus, these terms are not to be construed as limiting the present disclosure. In the present

disclosure, terms such as "fixedly connected", "connected to each other", and "connected" are to

be construed in a broad sense. For example, the term "connected" may refer to fixedly

connected, integrally connected, or detachably connected or may refer to directly connected or

indirectly connected through an intermediary. For those skilled in the related art, specific

meanings of the preceding terms in the present disclosure may be determined based on specific

situations, and the preceding terms are not to be construed as limiting the present disclosure.

Embodiment one

Referring to FIGS. 1 and 2, an environmentally friendly anti-termite photovoltaic harness

!0 includes multiple cable assemblies 1, and each cable assembly includes two cables 11.

Each cable 11 has a bound section and a non-bound section at different positions along a length

direction of the cable 11. All bound sections of the multiple cable assemblies 1 extend along the

!5 section is located at a free end of the branch line.

strap 2.

Of the two cables 11 of the same cable assembly 1, a free end of the bound section and a free

end of the non-bound section of one cable are connected to a positive electrode connector 12

and a negative electrode connector 13, respectively, and a free end of the bound section and a

free end of the non-bound section of the other cable are connected to a negative electrode

connector 13 and a positive electrode connector 12, respectively.

Each cable 11 includes a tin-plated soft conductor 111, an insulating sheath 112, an anti-termite

protective sheath 113, and an outer protective sheath 114, which are sequentially sleeved from

inside out.

In an optional embodiment of the present embodiment, the tin-plated soft conductor 111 is a

tin-plated soft copper conductor, the insulating sheath 112 is a 125-degree irradiation

cross-linkable low-smoke halogen-free polyolefin insulating sheath, the anti-termite protective

sheath 113 is a nylon 12 anti-termite protective sheath, and the outer protective sheath 114 is a

125-degree irradiation cross-linkable low-smoke halogen-free polyolefin protective sheath.

In an optional embodiment of the present embodiment, eight cable assemblies 1 are provided,

where two of the eight cable assemblies 1 are disperse assemblies, and the other six of the eight

cable assemblies 1 are close assemblies. Two non-bound sections of each disperse assembly

extend along two branch lines respectively, and two non-bound sections of each close assembly

!0 extend along the same branch line, where non-bound sections of three close assemblies are

located between two non-bound sections of one dispersion assembly, and the non-bound

sections of the three close assemblies and the two non-bound sections of the one dispersion

assembly extend toward one side of the main line; and non-bound sections of the other three

close assemblies are located between two non-bound sections of the other one disperse assembly,

!5 and the non-bound sections of the other three close assemblies and the two non-bound sections of the other one disperse assembly extend toward the other side of the main line.

In an optional embodiment of the present embodiment, one disperse assembly and three close

assemblies constitute a first cable unit 3, and the other disperse assembly and the other three

close assemblies constitute a second cable unit 4, where the first cable unit 3 and the second

cable unit 4 are arranged axis symmetrically.

In an optional embodiment of the present embodiment, non-bound sections of different cables

11 have the same length.

In an optional embodiment of the present embodiment, each branch line is perpendicular to the

main line.

In an optional embodiment of the present embodiment, the main line between two adjacent

branch lines has a length of 500 cm.

In an optional embodiment of the present embodiment, the bound section of each cable 11 is

bound together with the bound section of another cable by at least two binding straps 2 at

different positions.

In an optional embodiment of the present embodiment, the environmentally friendly anti-termite

photovoltaic harness is a prefabricated harness preformed in a factory.

In an optional embodiment of the present embodiment, the binding strap 2 is a nylon rope.

During practical use, the free ends of the bound sections are connected to a combiner box, and

the free end of the non-bound section is connected to the back of a photovoltaic assembly. In

!0 this product, a photovoltaic cable adopts the tin-plated soft copper conductor + the 125-degree

irradiation cross-linkable low-smoke halogen-free polyolefin insulating sheath + the nylon 12

anti-termite protective sheath + the 125-degree irradiation cross-linkable low-smoke halogen-free polyolefin protective sheath. The conductor of this product is the tin-plated soft copper conductor, which is flexible enough to meet the requirement of the cable for bending near a terminal and a connector. A tin-plated conductor can prevent the photovoltaic cable from being corroded under severe use conditions so that the conductor can operate normally. The insulating sheath and the outer protective sheath of this product are both made of a special material for photovoltaic cable products. Compared with conventional cable materials, the special material has the characteristics of low smoke, zero halogen, acid-alkali resistance, low-temperature resistance, and weather aging resistance. The outer protective sheath can protect the nylon 12 anti-termite protective sheath from mechanical damage and aging caused by an external force during installation and cable operation. After the nylon 12 anti-termite protective sheath is extruded (that is, the nylon 12 anti-termite protective sheath is applied on the surface of the cable), the surface is smooth, and the Shore hardness is above 67 so that termite bites can be effectively prevented. The normal operation of the cable is ensured, and power failure losses and maintenance costs caused by cable damage are reduced.

The features of the present application are described below.

(1) The environmentally friendly anti-termite photovoltaic harness disclosed in the present

application has reliable anti-termite performance, which can reach Level II of termite group

prevention. The structural design is reasonable, and the nylon 12 anti-termite protective sheath

can be protected by the outer protective sheath so that the cable can be protected against

!0 termites throughout the entire life cycle. Moreover, no chemical substance precipitates, which is

environmentally friendly and pollution-free. Therefore, the photovoltaic system operates more

reliably and problems such as cable damage, short circuits, and open circuits caused by termite

biting and acetic acid corrosion are greatly reduced, and the maintenance costs of the

photovoltaic system are reduced.

!5 (2) The environmentally friendly anti-termite photovoltaic harness disclosed in the present

application is prefabricated in the factory according to the requirements of an actual use place and only needs to be transported to the site for installation and connection. The environmentally friendly anti-termite photovoltaic harness is simple and fast to install and has low technical requirements. The connections between the positive and negative electrode connectors and the cable are of higher quality than manual joints at a construction site. The prefabricating machine in the factory is imported equipment, and the cutting and crimping techniques of the ends of the cable are stable in level. The quality of joints is detected by professional equipment so that hidden quality dangers such as false connection and deformation can be promptly discovered.

Prefabrication in the factory can greatly reduce labor costs and construction time and reduce

project costs.

Claims

What is claimed is:

1. An environmentally friendly anti-termite photovoltaic harness, comprising a plurality of cable assemblies, wherein each of the plurality of cable assemblies comprises two cables;

wherein each cable of the two cables has a bound section and a non-bound section at different positions along a length direction of the each cable, all bound sections of the plurality of cable assemblies extend along a same main line and free ends of all the bound sections are located at a same end of the main line, and the non-bound section extends along a branch line and a free end of the non-bound section is located at a free end of the branch line;

wherein a non-free end of the bound section is bound together with other bound sections by a binding strap;

wherein of the two cables of the each of the plurality of cable assemblies, a free end of the bound section and a free end of the non-bound section of one cable are connected to a positive electrode connector and a negative electrode connector respectively, and a free end of the bound section and a free end of the non-bound section of the other cable are connected to a negative electrode connector and a positive electrode connector respectively; and

wherein each cable of the two cables comprises a tin-plated soft conductor, an insulating sheath, an anti-termite protective sheath, and an outer protective sheath, which are sequentially sleeved from inside out.

2. The environmentally friendly anti-termite photovoltaic harness according to claim 1, wherein !0 the tin-plated soft conductor is a tin-plated soft copper conductor, the insulating sheath is a 125-degree irradiation cross-linkable low-smoke halogen-free polyolefin insulating sheath, the anti-termite protective sheath is a nylon 12 anti-termite protective sheath, and the outer protective sheath is a 125-degree irradiation cross-linkable low-smoke halogen-free polyolefin protective sheath.

!5 3. The environmentally friendly anti-termite photovoltaic harness according to claim 1, wherein eight cable assemblies are provided, wherein two of the eight cable assemblies are disperse assemblies, and the other six of the eight cable assemblies are close assemblies, two non-bound sections of each of the disperse assemblies extend along two branch lines respectively, and two non-bound sections of each of the close assemblies extend along a same branch line, wherein non-bound sections of three of the close assemblies are located between two non-bound sections of one of the disperse assemblies, and the non-bound sections of the three of the close assemblies and the two non-bound sections of the one of the disperse assemblies extend toward one side of the main line; and non-bound sections of the other three of the close assemblies are located between two non-bound sections of the other one of the disperse assemblies, and the non-bound sections of the other three of the close assemblies and the two non-bound sections of the other one of the disperse assemblies extend toward another side of the main line.

4. The environmentally friendly anti-termite photovoltaic harness according to claim 3, wherein the one of the disperse assemblies and the three of the close assemblies constitute a first cable unit, and the other one of the disperse assemblies and the other three of the close assemblies constitute a second cable unit, wherein the first cable unit and the second cable unit are arranged axisymmetrically.

5. The environmentally friendly anti-termite photovoltaic harness according to claim 1, wherein non-bound sections of different cables have a same length.

6. The environmentally friendly anti-termite photovoltaic harness according to claim 1, wherein each branch line is perpendicular to the main line.

7. The environmentally friendly anti-termite photovoltaic harness according to claim 1, wherein the main line between two adjacent branch lines has a length of 500 cm.

8. The environmentally friendly anti-termite photovoltaic harness according to claim 1, wherein the bound section of the each cable is bound together with the bound sections of other cables by at least two binding straps at different positions.

9. The environmentally friendly anti-termite photovoltaic harness according to claim 1, wherein the environmentally friendly anti-termite photovoltaic harness is a prefabricated harness !0 preformed in a factory.

10. The environmentally friendly anti-termite photovoltaic harness according to claim 1, wherein the binding strap is a nylon rope.