High temperature resistant photovoltaic cable arrangement

Abstract

The utility model relates to a kind of high-temperature-resistant photovoltaic cable device, wherein high-temperature-resistant photovoltaic cable device includes anode cable, the anode cable includes first conductor and first high-temperature-resistant insulating layer, the first high-temperature-resistant insulating layer is coated outside the first conductor;Cathode cable, the anode cable includes second conductor and second high-temperature-resistant insulating layer, the second high-temperature-resistant insulating layer is coated outside the second conductor;Outer protective layer, the anode cable and the cathode cable are coated and positioned together by the outer protective layer, so that the anode cable and the cathode cable are arranged in parallel, and at least part of the first high-temperature-resistant insulating layer and the second high-temperature-resistant insulating layer are mutually pasted, and so that the outer protective layer forms the runway shape cross section with semicircle at both ends.The utility model can coat anode and cathode cable into runway shape by outer protective layer, has good high-temperature-resistant performance and is easy to install.

Description

Technical Field

[0001] This utility model relates to a photovoltaic cable, and more particularly to a high-temperature resistant photovoltaic cable device. Background Technology

[0002] The description in this section provides only background information related to the disclosure of this utility model and does not constitute prior art.

[0003] Photovoltaic cables are used for electrical transmission and are frequently used in environments such as deserts and hillsides, as well as on rooftops. In particular, in some special cases, photovoltaic cables need to be installed on special structures such as rooftops, where they are exposed. Therefore, it is necessary to consider both the high-temperature resistance and ease of installation of photovoltaic cables, but existing photovoltaic cables cannot meet these requirements.

[0004] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of this utility model and facilitating understanding by those skilled in the art. It should not be assumed that these technical solutions are known to those skilled in the art simply because they have been described in the background section of this utility model. Utility Model Content

[0005] The purpose of this invention is to provide a high-temperature resistant photovoltaic cable device that can cover the positive and negative cables in a racetrack shape with an outer protective layer, which has good high-temperature resistance and is easy to install.

[0006] To achieve the above objectives, this utility model discloses a high-temperature resistant photovoltaic cable device, which includes:

[0007] Positive electrode cable, the positive electrode cable including a first conductor and a first high temperature resistant insulation layer, the first high temperature resistant insulation layer covering the first conductor;

[0008] The negative electrode cable, wherein the positive electrode cable includes a second conductor and a second high-temperature resistant insulation layer, the second high-temperature resistant insulation layer covering the second conductor;

[0009] The outer protective layer covers and confines the positive and negative cables together, so that the positive and negative cables are arranged in parallel, and at least part of the first high-temperature resistant insulation layer and the second high-temperature resistant insulation layer are bonded to each other, so that the outer protective layer forms a racetrack-shaped cross-section with semicircular ends.

[0010] As a further description of the above technical solution, the outer protective layer includes a first protective layer and a second protective layer, wherein the first protective layer covers the positive cable and the negative cable, and the second protective layer covers the first protective layer.

[0011] As a further description of the above technical solution, the thickness of the first protective layer is less than that of the second protective layer.

[0012] As a further description of the above technical solution, the second protective layer, the first high-temperature resistant insulating layer, and the second high-temperature resistant insulating layer have equal thicknesses.

[0013] As a further description of the above technical solution, the first conductor and the second conductor are configured as bare copper wire, silver-plated copper wire or nickel-plated copper wire.

[0014] As a further description of the above technical solution, the first high-temperature resistant insulating layer and the second high-temperature resistant insulating layer are made of perfluoroethylene propylene or fusible polytetrafluoroethylene material.

[0015] As a further description of the above technical solution, the first protective layer is formed by longitudinally wrapping or wrapping fluoroplastic material strips around the positive and negative cables.

[0016] As a further description of the above technical solution, the second protective layer is set as perfluoroethylene propylene or fusible polytetrafluoroethylene material.

[0017] Based on the above technical solution, the beneficial effects of this utility model are as follows:

[0018] This utility model discloses a high-temperature resistant photovoltaic cable device. The positive and negative cables are wrapped in a racetrack shape by an outer protective layer, exhibiting good high-temperature resistance and easy installation. Specifically, in this application, each of the positive and negative cables has a high-temperature resistant insulation layer on its conductor. Furthermore, the positive and negative cables are arranged side-by-side in parallel, resulting in a compact overall structure. An additional outer protective layer wraps them in a low, racetrack shape. This flat structure is aesthetically pleasing and space-saving, while the outer protective layer also provides additional heat insulation, meeting the requirements for installation space and operating temperature, such as on rooftops.

[0019] To further understand the features and technical content of this utility model, please refer to the following detailed description and drawings of this utility model. However, the drawings provided are for reference and illustration only and are not intended to limit this utility model. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments or prior art of this specification, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this specification. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a cross-sectional schematic diagram of a high-temperature resistant photovoltaic cable device provided in the embodiments of this specification;

[0022] In the picture:

[0023] 1. Positive electrode cable; 11. First conductor; 12. First high-temperature resistant insulation layer;

[0024] 2. Negative electrode cable; 21. Second conductor; 22. Second high-temperature resistant insulation layer;

[0025] 3. Outer protective layer; 31. First protective layer; 32. Second protective layer. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this specification, and not all embodiments. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this specification.

[0027] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can understand the advantages and effects of this utility model from the content disclosed in this specification. This utility model can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of this utility model. Furthermore, the accompanying drawings of this utility model are for simple illustration only and are not depictions of actual dimensions, as stated in advance. The following embodiments will further describe the relevant technical content of this utility model in detail, but the disclosed content is not intended to limit the scope of protection of this utility model.

[0028] It should be understood that while terms such as "first," "second," and "third" may be used in this document to describe various components or signals, these components or signals should not be limited by these terms. These terms are primarily used to distinguish one component from another, or one signal from another. Furthermore, the term "or" as used herein should, as appropriate, include any combination of one or more of the related listed items.

[0029] Please see Figure 1 This embodiment provides a high-temperature resistant photovoltaic cable device, which includes:

[0030] Positive cable 1, the positive cable 1 includes a first conductor 11 and a first high-temperature resistant insulation layer 12, the first high-temperature resistant insulation layer 12 covering the first conductor 11;

[0031] The negative cable 2, the positive cable 2 includes a second conductor 21 and a second high-temperature resistant insulation layer 22, the second high-temperature resistant insulation layer 22 covering the second conductor 21;

[0032] The outer protective layer 3 covers and confines the positive cable 1 and the negative cable 2 together, so that the positive cable 1 and the negative cable 2 are arranged in parallel, and at least part of the first high temperature resistant insulation layer 12 and the second high temperature resistant insulation layer 22 are attached to each other, and the outer protective layer 3 forms a racetrack-shaped cross section with semicircles at both ends.

[0033] In the above structure, during its production, the first conductor 11 is separately covered with a first high-temperature resistant insulation layer 12, and the second conductor 21 is separately covered with a second high-temperature resistant insulation layer 22. The finished positive cable 1 and negative cable 2 are arranged and cut in parallel according to a specified length. Then, with the help of the outer protective layer 3, the positive cable 1 and negative cable 2 are wrapped together, so that the groove and gap between the positive cable 1 and the negative cable 2 are flattened by the outer protective layer 3. Its overall shape forms a structure with a semi-circular racetrack-shaped cross section at both ends, which is significantly flatter than a single positive cable 1 or negative cable 2.

[0034] In this application, the positive and negative cables can be wrapped in a racetrack shape with an outer protective layer, which has good high-temperature resistance and is easy to install. Specifically, in this application, the positive cable 1 and the negative cable 2 each have a high-temperature resistant insulation layer on the outside of their conductors. Furthermore, the positive cable 1 and the negative cable 2 are arranged side by side in parallel, making their overall structure compact. An additional outer protective layer 3 is used to wrap them in a low racetrack shape. The racetrack shape structure is flat, aesthetically pleasing, and space-saving. The outer protective layer 3 also provides another layer of heat insulation, meeting the requirements of installation space and operating temperature, such as on rooftops.

[0035] Based on the above structure, the outer protective layer 3 includes a first protective layer 31 and a second protective layer 32. The first protective layer 31 covers the positive cable 1 and the negative cable 2, and the second protective layer 32 covers the first protective layer 31. Specifically, the thickness of the first protective layer 31 is less than that of the second protective layer 32. The first protective layer 31 can be used for preliminary wrapping and shaping of the positive cable 1 and the negative cable 2, while the second protective layer 32 forms a specific outer layer protection for the internal positive cable 1 and negative cable 2, and has a thicker outer sheath.

[0036] In another embodiment, the second protective layer 32, the first high-temperature resistant insulating layer 12, and the second high-temperature resistant insulating layer 13 have equal thicknesses. In practice, these three layers can be processed using similar materials, which can indirectly save costs and facilitate quantitative control. For example, the first high-temperature resistant insulating layer 12 and the second high-temperature resistant insulating layer 22 can be made of perfluoroethylene propylene or fusible polytetrafluoroethylene (PFA), and similarly, the second protective layer 32 can be made of perfluoroethylene propylene or fusible PFA. The equal thickness and identical materials of the three layers allow for further improvements in the structural balance, heat resistance, water resistance, and insulation performance of the semi-circular racetrack-shaped cross-section. Perfluoroethylene propylene (F46) has excellent electrical insulation properties with a continuous operating temperature of 200°C, while fusible polytetrafluoroethylene (PFA) has a continuous operating temperature of 250°C, offering even higher performance and allowing for flexible configuration as needed.

[0037] In this embodiment, the first conductor 11 and the second conductor 21 are configured as bare copper wire, silver-plated copper wire, or nickel-plated copper wire. Bare copper wire is the basic choice because it has excellent conductivity and low cost, but it is prone to oxidation. The silver layer in silver-plated copper wire improves oxidation resistance and provides higher operating temperature performance. Nickel-plated copper wire uses a nickel layer to improve strong corrosion resistance. The above selection can be set according to the usage environment. In simple heat-resistant scenarios, bare copper wire can be used because it is easy to process.

[0038] Furthermore, the first protective layer 31 is formed by longitudinally wrapping or wrapping fluoroplastic material tape around the positive electrode cable 1 and the negative electrode cable 2. It can be a thin strip material made of fluoroplastic materials such as polytetrafluoroethylene (PTFE) and fluorinated ethylene propylene copolymer (FEP). Its material mainly plays an auxiliary role in high temperature resistance, and can also play a role in isolating the insulation and sheath. The specific wrapping method can be selected according to actual needs. The main difference lies in the direction and function of the wrapping tape. Longitudinal wrapping is mainly used to increase the tensile strength and wear resistance of the cable, making the cable stronger and more durable. Wrapping tape is wrapped in a spiral shape along the circumference of the cable, mainly used to protect the insulation layer and conductor inside the cable and prevent mechanical damage.

[0039] The above-disclosed content is only a preferred and feasible embodiment of the present utility model, and is not intended to limit the scope of the patent application of the present utility model. Therefore, all equivalent technical changes made using the contents of the present utility model specification and drawings are included in the scope of the patent application of the present utility model.

[0040] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0041] Although this application has been described by way of examples, those skilled in the art will know that this application has many modifications and variations without departing from the spirit of this application, and it is intended that the appended embodiments include these modifications and variations without departing from this application.

Claims

1. A high-temperature resistant photovoltaic cable device, characterized in that, The high-temperature resistant photovoltaic cable device includes: Positive electrode cable, the positive electrode cable including a first conductor and a first high temperature resistant insulation layer, the first high temperature resistant insulation layer covering the first conductor; The negative electrode cable, wherein the positive electrode cable includes a second conductor and a second high-temperature resistant insulation layer, the second high-temperature resistant insulation layer covering the second conductor; The outer protective layer covers and confines the positive and negative cables together, so that the positive and negative cables are arranged in parallel, and at least part of the first high-temperature resistant insulation layer and the second high-temperature resistant insulation layer are bonded to each other, so that the outer protective layer forms a racetrack-shaped cross-section with semicircular ends.

2. The high-temperature resistant photovoltaic cable device according to claim 1, characterized in that: The outer protective layer includes a first protective layer and a second protective layer. The first protective layer covers the positive cable and the negative cable, and the second protective layer covers the first protective layer.

3. The high-temperature resistant photovoltaic cable device according to claim 2, characterized in that: The thickness of the first protective layer is less than that of the second protective layer.

4. The high-temperature resistant photovoltaic cable device according to claim 2, characterized in that: The second protective layer, the first high-temperature resistant insulating layer, and the second high-temperature resistant insulating layer have the same thickness.

5. The high-temperature resistant photovoltaic cable device according to claim 1, characterized in that: The first conductor and the second conductor are configured as bare copper wire, silver-plated copper wire, or nickel-plated copper wire.

6. The high-temperature resistant photovoltaic cable device according to claim 1, characterized in that: The first high-temperature resistant insulating layer and the second high-temperature resistant insulating layer are made of perfluoroethylene propylene or fusible polytetrafluoroethylene.

7. The high-temperature resistant photovoltaic cable device according to claim 2, characterized in that: The first protective layer is formed by longitudinally wrapping or wrapping fluoroplastic material strips around the positive and negative cables.

8. The high-temperature resistant photovoltaic cable device according to claim 2, characterized in that: The second protective layer is made of perfluoroethylene propylene or fusible polytetrafluoroethylene.

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