Cable for photovoltaic system

Abstract

The utility model discloses a cable for a photovoltaic system, and relates to the technical field of photovoltaic systems. The cable comprises a cable main body, the cable main body comprises a wire core, the outer surface of the wire core is sleeved with a protective sleeve, and a filling layer is filled between the wire core and the protective sleeve; the protection sleeve comprises an insulation isolation layer. According to the utility model, the protective sleeve is arranged outside the wire core, and the filling layer is filled between the wire core and the protective sleeve, so that the wire core can be well protected, the filling layer enables the structure of the cable to be more compact, and the protective sleeve comprises the insulation isolation layer, so that the insulation performance can be further enhanced, the current leakage of the wire core is prevented, and the safe operation of the cable is ensured; the wrapping tape layer can fix the internal structure, the integrity of the cable is enhanced, the stability of the cable is improved, the outer sheath has weather resistance, corrosion resistance, wear resistance and ultraviolet resistance, and the internal structure of the cable can be comprehensively protected from adverse effects of the external environment.

Description

Technical Field

[0001] This utility model belongs to the field of photovoltaic system technology, and in particular relates to a cable for photovoltaic systems. Background Technology

[0002] Photovoltaic systems primarily convert solar energy into electrical energy through solar panels, and cables play a crucial role in the entire system. They are responsible for efficiently and stably transmitting the direct current generated by the solar panels to various components such as inverters, energy storage devices, and the power grid, making them key connection components ensuring the normal operation of the photovoltaic system. Their performance directly affects the power generation efficiency, stability, and lifespan of the photovoltaic system.

[0003] However, existing cables used in photovoltaic systems have many defects. In terms of protection performance, some cables have unreasonable protective structure designs that cannot effectively resist external electromagnetic interference. This not only affects the quality of the power transmitted by the cable itself, but may also interfere with the normal operation of other surrounding electronic equipment. At the same time, in the face of complex outdoor environments, such as humidity and mechanical forces, the existing cables are not waterproof, buffering and mechanical damage resistant enough, making the cables susceptible to damage, shortening their service life and increasing the maintenance cost of photovoltaic systems.

[0004] To address these issues, we provide a cable for photovoltaic systems. Utility Model Content

[0005] The purpose of this utility model is to provide a cable for photovoltaic systems that solves the problem that existing photovoltaic system cables cannot adapt to complex outdoor environments through the combination of an insulation layer, a wrapping layer, a shielding layer, a protective layer, and an outer sheath.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0007] This utility model relates to a cable for photovoltaic systems, comprising a cable body, the cable body including a conductor, a protective sleeve covering the outer surface of the conductor, and a filler layer between the conductor and the protective sleeve; the protective sleeve includes an insulating layer, a wrapping layer fixedly connected to the outer surface of the insulating layer, a shielding layer fixedly connected to the outer surface of the wrapping layer, a protective layer fixedly connected to the outer surface of the shielding layer, and an outer sheath fixedly connected to the outer surface of the protective layer; the protective layer includes a water-resistant layer, a buffer layer, and an armor layer, the buffer layer being fixed to the outer surface of the water-resistant layer, the armor layer being fixed to the outer surface of the buffer layer, and the protective sleeve and filler layer outside the conductor, enhancing the stability and compactness of the cable structure; the protective sleeve is composed of an insulating layer, a wrapping layer, a shielding layer, a protective layer, and an outer sheath connected sequentially, with each layer having a clear function: the insulating layer ensures insulation performance, the wrapping layer fixes the internal structure of the cable, the shielding layer isolates electromagnetic interference, the protective layer provides protection from multiple aspects such as water resistance, buffering, and enhanced mechanical strength, and the outer sheath provides external protection, significantly improving the overall performance of the cable and making it suitable for photovoltaic systems in complex environments.

[0008] The present invention is further configured such that the wire core is made of tin-plated copper conductor, and the filling layer is made of non-hygroscopic glass fiber material. The tin-plated copper conductor of the wire core has good conductivity, oxidation resistance and flexibility, which can effectively reduce resistance, ensure efficient power transmission and extend the service life of the cable. The non-hygroscopic glass fiber material of the filling layer can prevent moisture from entering and affecting the performance of the cable, and further stabilize the internal structure of the cable.

[0009] The present invention is further configured such that the wrapping layer is made of non-woven fabric and the outer sheath is made of neoprene rubber. The wrapping layer is made of non-woven fabric, which is soft and has a certain strength, and can better wrap the internal structure and improve the overall integrity. The outer sheath is made of neoprene rubber, which has excellent weather resistance, corrosion resistance, wear resistance and UV resistance. In complex outdoor environments, it can protect the inside of the cable from corrosion in all aspects and extend the service life of the cable.

[0010] The present invention is further configured such that the insulating isolation layer includes a first isolation layer and a second isolation layer, the second isolation layer is fixed to the outer surface of the first isolation layer, the first isolation layer is made of halogen-free material, and the second isolation layer is made of cross-linked polyethylene material.

[0011] The present invention is further configured such that the shielding layer includes a first electromagnetic shielding layer and a second electromagnetic shielding layer, the second electromagnetic shielding layer is fixed to the outer surface of the first electromagnetic shielding layer, the first electromagnetic shielding layer is made of aluminum foil, and the second electromagnetic shielding layer is made of copper wire mesh.

[0012] The present invention is further configured such that the waterproof layer is made of polyurethane, the buffer layer is made of foamed polyolefin, and the armor layer is made of steel strip. The waterproof layer is made of polyurethane, which has excellent waterproof performance and can effectively block water intrusion. The buffer layer is made of foamed polyolefin, which has good elasticity and can absorb external impact and protect the internal structure. The armor layer is made of steel strip, which greatly enhances the mechanical strength of the cable, enabling it to resist mechanical external forces such as tension, compression, and puncture, and improves the durability of the cable in complex environments.

[0013] The present invention has the following beneficial effects.

[0014] 1. This utility model features a protective sleeve over the wire core, with a filler layer between the wire core and the protective sleeve. This provides excellent protection for the wire core and makes the cable structure more compact. The protective sleeve includes an insulating layer, which further enhances insulation performance, prevents current leakage from the wire core, and ensures the safe operation of the cable. The wrapping layer fixes the internal structure, enhances the overall integrity of the cable, and helps improve its stability. The outer sheath has weather resistance, corrosion resistance, abrasion resistance, and UV resistance, providing comprehensive protection for the internal structure of the cable from adverse external environmental influences.

[0015] 2. The shielding layer of this utility model can effectively isolate electromagnetic interference, preventing the electromagnetic field inside the cable from interfering with external equipment, and resisting the influence of external electromagnetic interference on the signal transmission inside the cable. The water-proof layer can prevent moisture from entering the inside of the cable, avoiding the degradation of insulation performance or conductor corrosion. The buffer layer can absorb external impact force and reduce damage to the internal structure of the cable. The armor layer enhances the mechanical strength of the cable, giving it good tensile, compressive and puncture resistance. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0017] Figure 1 This is a three-dimensional diagram of a cable used in a photovoltaic system.

[0018] Figure 2 This is a schematic diagram of the composition of the protective sheath material in a cable used in a photovoltaic system.

[0019] Figure 3 This is a schematic diagram of the composition of the protective layer material in a cable used in a photovoltaic system.

[0020] Figure 4 This is a schematic diagram of the composition of the insulation layer material in a cable used in a photovoltaic system.

[0021] Figure 5 This is a schematic diagram of the shielding layer material composition in a cable used in a photovoltaic system.

[0022] In the attached diagram: 1. Cable body; 2. Core; 3. Protective sheath; 4. Filler layer; 301. Insulation layer; 302. Wrapping tape layer; 303. Shielding layer; 304. Protective layer; 305. Outer sheath; 3041. Waterproof layer; 3042. Buffer layer; 3043. Armor layer; 3011. First isolation layer; 3012. Second isolation layer; 3031. First electromagnetic shielding layer; 3032. Second electromagnetic shielding layer. Detailed Implementation

[0023] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example 1

[0025] Please see Figure 1-5 This utility model is a cable for a photovoltaic system, including a cable body 1, the cable body 1 including a conductor 2, a protective sleeve 3 covering the outer surface of the conductor 2, and a filler layer 4 filling the space between the conductor 2 and the protective sleeve 3; the protective sleeve 3 includes an insulating isolation layer 301, a wrapping layer 302 fixedly connected to the outer surface of the insulating isolation layer 301, a shielding layer 303 fixedly connected to the outer surface of the wrapping layer 302, a protective layer 304 fixedly connected to the outer surface of the shielding layer 303, and an outer sheath 305 fixedly connected to the outer surface of the protective layer 304; the protective layer 304 includes a water-proof layer 3041, a buffer layer 3042, and an armor layer 3043, the buffer layer 3042 being fixed to the outer surface of the water-proof layer 3041, and the armor layer 3043 being fixed to the outer surface of the buffer layer 3042.

[0026] Specifically: the protective sleeve 3 and the filling layer 4 outside the conductor 2 enhance the stability and compactness of the cable structure; the protective sleeve 3 is composed of an insulating isolation layer 301, a wrapping layer 302, a shielding layer 303, a protective layer 304, and an outer sheath 305 connected in sequence. Each layer has a clear function: the insulating isolation layer 301 ensures insulation performance, the wrapping layer 302 fixes the internal structure of the cable, the shielding layer 303 isolates electromagnetic interference, the protective layer 304 provides protection from multiple aspects such as water resistance, buffering, and enhanced mechanical strength, and the outer sheath 305 provides external protection. Overall, the comprehensive performance of the cable is significantly improved, making it suitable for photovoltaic systems in complex environments.

[0027] Example 2

[0028] Please see Figure 1-5Based on Embodiment 1, the core 2 is made of tin-plated copper conductor, the filling layer 4 is made of non-hygroscopic glass fiber material, the wrapping layer 302 is made of non-woven fabric material, the outer sheath 305 is made of neoprene rubber, the insulating isolation layer 301 includes a first isolation layer 3011 and a second isolation layer 3012, the second isolation layer 3012 is fixed to the outer surface of the first isolation layer 3011, the first isolation layer 3011 is made of halogen-free material, the second isolation layer 3012 is made of cross-linked polyethylene material, the shielding layer 303 includes a first electromagnetic shielding layer 3031 and a second electromagnetic shielding layer 3032, the second electromagnetic shielding layer 3032 is fixed to the outer surface of the first electromagnetic shielding layer 3031, the first electromagnetic shielding layer 3031 is made of aluminum foil, the second electromagnetic shielding layer 3032 is made of copper wire braided mesh, the water-proof layer 3041 is made of polyurethane material, the buffer layer 3042 is made of foamed polyolefin material, and the armor layer 3043 is made of steel strip.

[0029] Specifically: Core 2 uses tin-plated copper conductor, which has good conductivity, oxidation resistance, and flexibility, effectively reducing resistance, ensuring efficient power transmission, and extending cable life. Filler layer 4 uses non-hygroscopic glass fiber material, which can prevent moisture intrusion from affecting cable performance and further stabilize the internal structure of the cable. Wrapping layer 302 uses non-woven fabric material, which is soft and has a certain strength, and can better wrap the internal structure, improving overall integrity. Outer sheath 305 uses neoprene rubber, which has excellent weather resistance, corrosion resistance, abrasion resistance, and UV resistance. In complex outdoor environments, it can protect the cable's internal structure from corrosion in all aspects, extending the cable's service life. Insulation layer 301 consists of a first insulation layer 3011 made of halogen-free material and a second insulation layer 3012 made of cross-linked polyethylene material. Halogen-free material is environmentally friendly and has good insulation performance, while cross-linked polyethylene material has superior... The cable boasts superior electrical insulation, heat resistance, and cold resistance. Its double-layer design further enhances insulation, reduces leakage risk, and improves cable safety. The shielding layer 303 comprises a first electromagnetic shielding layer 3031 made of aluminum foil and a second electromagnetic shielding layer 3032 made of copper wire braid. The aluminum foil effectively shields low-frequency electromagnetic interference, while the copper wire braid provides good shielding against high-frequency electromagnetic interference. This double-layer design significantly improves the cable's electromagnetic interference resistance, ensuring power transmission quality and preventing interference with surrounding equipment. The water-resistant layer 3041 is made of polyurethane, offering excellent waterproofing and effectively preventing water intrusion. The buffer layer 3042 uses foamed polyolefin material, providing good elasticity and absorbing external impacts to protect the internal structure. The armor layer 3043 uses steel tape, greatly enhancing the cable's mechanical strength and enabling it to withstand tensile, compressive, and puncture forces, improving its durability in complex environments.

[0030] The working principle of this utility model is as follows: The conductor core 2 is made of tin-plated copper conductor, which provides a low-resistance path for current, ensuring efficient and stable transmission and reducing line loss. The insulation isolation layer 301 is composed of a double-layer structure of halogen-free material and cross-linked polyethylene material, which effectively prevents current leakage and ensures transmission safety. The space between the conductor core 2 and the protective sleeve 3 is filled with non-hygroscopic glass fiber material, which enhances the compactness and stability of the cable structure and prevents moisture intrusion. The wrapping layer 302 enhances the overall integrity. The shielding layer 303 shields low-frequency and high-frequency electromagnetic interference through aluminum foil and copper wire braided mesh, respectively, to ensure the quality of power transmission. The water-proof layer 3041, buffer layer 3042, armor layer 3043 and the outermost neoprene rubber outer sheath 305 in the protective layer 304 protect the internal structure of the cable from multiple aspects such as waterproofing, buffering, enhancing mechanical strength and resisting external environmental erosion, and extending the service life of the cable in complex outdoor environments.

[0031] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. Cable for photovoltaic systems comprising a cable body (1), characterized in that: The cable body (1) comprises a core (2), the outer surface of the core (2) is sleeved with a protective sleeve (3), and a filling layer (4) is filled between the core (2) and the protective sleeve (3); The protective sleeve (3) comprises an insulating isolation layer (301), the outer surface of the insulating isolation layer (301) is fixedly connected with a tape layer (302), the outer surface of the tape layer (302) is fixedly connected with a shielding layer (303), the outer surface of the shielding layer (303) is fixedly connected with a protective layer (304), and the outer surface of the protective layer (304) is fixedly connected with an outer sheath (305); The protective layer (304) comprises a waterproof layer (3041), a buffer layer (3042) and an armored layer (3043), the buffer layer (3042) is fixed to the outer surface of the waterproof layer (3041), and the armored layer (3043) is fixed to the outer surface of the buffer layer (3042).

2. A cable for a photovoltaic system according to claim 1, characterized in that: The core (2) is made of a tinned copper conductor, and the filling layer (4) is made of a non-hygroscopic glass fiber material.

3. A cable for a photovoltaic system according to claim 1, characterized in that: The tape layer (302) is made of a non-woven fabric material, and the outer sheath (305) is made of a neoprene rubber.

4. The cable of claim 1, wherein: The insulating isolation layer (301) comprises a first isolation layer (3011) and a second isolation layer (3012), the second isolation layer (3012) is fixed to the outer surface of the first isolation layer (3011), the first isolation layer (3011) is made of a halogen-free material, and the second isolation layer (3012) is made of a cross-linked polyethylene material.

5. The cable of claim 1, wherein: The shielding layer (303) comprises a first electromagnetic shielding layer (3031) and a second electromagnetic shielding layer (3032), the second electromagnetic shielding layer (3032) is fixed to the outer surface of the first electromagnetic shielding layer (3031), the first electromagnetic shielding layer (3031) is made of an aluminum foil, and the second electromagnetic shielding layer (3032) is made of a copper wire woven mesh.

6. A cable for a photovoltaic system according to claim 1, characterized in that: The waterproof layer (3041) is made of a polyurethane material, the buffer layer (3042) is made of a foamed polyolefin material, and the armored layer (3043) is made of a steel belt.

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