Photovoltaic cable assembly with double waterproof structures
By adopting a dual waterproof structure and multi-layer protection design in photovoltaic cable assemblies, the problems of poor waterproof performance and susceptibility to impact in existing photovoltaic cables have been solved, achieving higher waterproof performance and stability, and extending the service life of the cables.
Patent Information
- Application Number
- CN202422432060.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-09
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-10-09
AI Technical Summary
Existing photovoltaic cable modules have a waterproof layer on the cable surface, but the waterproof performance is poor, making them susceptible to moisture intrusion and damage to internal components due to external impacts, thus affecting the normal operation of the cable.
It adopts a dual waterproof structure, including an outer protective sleeve, a metal support layer, an insulation layer, first and second insulation layers, an inner waterproof layer and a cable core. The outer protective sleeve is coated with a waterproof coating on the outer wall and has a sealing rubber layer on the inner wall. The inner waterproof layer is filled with carbon fiber and desiccant, providing multi-layer waterproof and physical protection.
It improves the cable's waterproof performance, prevents water vapor penetration, enhances the cable's stability and reliability, extends its service life, and reduces damage caused by temperature changes and external impacts.
Smart Images
Figure CN223582729U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to photovoltaic cable technical field, concretely is a photovoltaic cable assembly with double waterproof structure. BACKGROUND
[0002] A photovoltaic system is a system that converts solar energy into electricity, mainly used for the collection and utilization of solar energy. Photovoltaic systems are a clean, renewable energy solution that helps reduce dependence on fossil fuels and reduce greenhouse gas emissions, which is of great significance to environmental protection and sustainable development. With the progress of technology and the reduction of cost, photovoltaic systems are increasingly widely used around the world.
[0003] Photovoltaic cables are designed specifically for solar power generation systems, used to connect solar photovoltaic panels, inverters, controllers, batteries and other electrical equipment. This cable must be able to withstand extreme conditions in outdoor environments, including ultraviolet radiation, temperature fluctuations, humidity, mechanical stress and chemical corrosion. Photovoltaic system cables are usually divided into different types according to their application location and installation method, such as outdoor direct-buried cable, indoor cable, roof cable, etc.
[0004] The inventor found that the prior art has the following problems in the process of implementing the utility model: 1. The existing photovoltaic cable assembly often only sets a waterproof layer on the surface of the cable, which has poor waterproof performance in actual use, so that water vapor easily invades the inside of the cable; 2. The existing photovoltaic cable assembly is easily impacted from the outside during use, which causes damage to the internal components of the cable, thereby affecting the normal operation of the entire cable. UTILITY MODEL CONTENT
[0005] The utility model aims at providing a photovoltaic cable assembly with double waterproof structure to solve the problem that the existing photovoltaic cable assembly often only sets a waterproof layer on the surface of the cable, which has poor waterproof performance in actual use, so that water vapor easily invades the inside of the cable, and the existing photovoltaic cable assembly is easily impacted from the outside during use, which causes damage to the internal components of the cable, thereby affecting the normal operation of the entire cable. To achieve the above purpose, the utility model provides the following technical scheme: a photovoltaic cable assembly with double waterproof structure, comprising an outer protective sleeve, a metal support layer is arranged inside the outer protective sleeve, a thermal insulation layer is arranged inside the metal support layer, a first insulation layer is arranged inside the thermal insulation layer, an internal waterproof layer is arranged inside the first insulation layer, a second insulation layer is arranged inside the internal waterproof layer, and a cable core is arranged inside the second insulation layer.
[0006] Further preferably, the outer wall of the outer protective sleeve is coated with a waterproof coating, and the inner wall of the outer protective sleeve is provided with a sealing rubber layer.
[0007] Further preferably, the second insulation layer and the internal waterproof layer are filled with carbon fibers.
[0008] Further preferably, the internal waterproof layer is composed of a first waterproof layer and a second waterproof layer, wherein the second waterproof layer is attached to the outer wall of the second insulation layer, and the first waterproof layer is attached to the inner wall of the first insulation layer.
[0009] Further preferably, the first waterproof layer and the second waterproof layer are filled with a desiccant.
[0010] Further preferably, the first insulation layer and the second insulation layer together constitute an insulation mechanism.
[0011] Further preferably, the outer wall of the outer protective sleeve is provided with anti-skid grooves.
[0012] Compared with the prior art, the utility model has the advantages of:
[0013] In the utility model, the waterproof coating applied to the outer wall of the outer protective sleeve can form a protective film, which can effectively block moisture and humidity and prevent them from penetrating into the cable, and the sealing rubber layer can provide good sealing effect and further prevent the invasion of water vapor, and the internal waterproof layer can provide double insurance, that is, even if the outer protective sleeve is slightly damaged or defective and water vapor invades, the internal waterproof layer can still effectively prevent moisture from penetrating into the interior of the cable, thereby improving the overall waterproof performance of the cable, and the desiccant filled between the first waterproof layer and the second waterproof layer can absorb a small amount of moisture that has passed through the first waterproof layer, thereby reducing the possibility of water vapor continuing to penetrate into the interior of the cable, enhancing the overall waterproof effect, and the desiccant helps to maintain a dry environment inside the cable, prevents fluctuations in the performance of the cable caused by humidity, and improves the stability and reliability of the entire photovoltaic system.
[0014] In the utility model, the second insulation layer and the internal waterproof layer are filled with carbon fibers, which can provide additional physical protection for the cable core and prevent damage caused by external impact, and the thermal expansion coefficient of carbon fibers is relatively low, which can reduce the internal stress of the cable caused by temperature changes, thereby reducing the influence of thermal cycles on the performance of the cable core, and the metal support layer provides a solid structural support for the interior of the cable, ensures that the cable will not be deformed or damaged during transportation and installation, and the metal support layer can also protect the cable core from external physical impact such as extrusion and impact, thereby prolonging the service life of the cable, and the first insulation layer and the second insulation layer are arranged separately, which can realize layered protection, that is, even if one layer of insulation material is damaged, the other layer can still provide protection, thereby improving the overall safety. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is a three-dimensional structure schematic view of the utility model;
[0016] Figure 2 It is the side view structure schematic diagram of the utility model;
[0017] Figure 3 It is the outer protective sleeve structure schematic diagram of the utility model;
[0018] Figure 4 It is the internal waterproof layer structure schematic diagram of the utility model.
[0019] In the drawing: 1, outer protective sleeve; 101, waterproof coating; 102, sealing rubber layer; 103, anti-skid groove; 2, metal support layer; 3, heat preservation layer; 4, first insulation layer; 5, internal waterproof layer; 501, first waterproof layer; 502, second waterproof layer; 503, desiccant; 6, second insulation layer; 7, cable core. DETAILED DESCRIPTION
[0020] The technical scheme in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the scope of protection of the utility model.
[0021] Please refer to Figures 1 to 4 The utility model provides a kind of technical scheme: a photovoltaic cable assembly with double waterproof structure, including outer protective sleeve 1, the inside of outer protective sleeve 1 is equipped with metal support layer 2, the inside of metal support layer 2 is equipped with heat preservation layer 3, the inside of heat preservation layer 3 is equipped with first insulation layer 4, the inside of first insulation layer 4 is equipped with internal waterproof layer 5, the inside of internal waterproof layer 5 is equipped with second insulation layer 6, the inside of second insulation layer 6 is equipped with cable core 7.
[0022] In the embodiment, as Figure 1 And Figure 3As shown, the outer wall of the outer protective sleeve 1 is coated with a waterproof coating 101, and the inner wall of the outer protective sleeve 1 is provided with a sealing rubber layer 102; it should be noted that in the photovoltaic cable assembly in the utility model, the outer protective sleeve 1 needs to be arranged outside the cable core 7, and the outer wall of the outer protective sleeve 1 is coated with a waterproof coating 101 to form the first waterproof protection, and the sealing rubber layer 102 arranged on the inner wall of the outer protective sleeve 1 can effectively prevent external water vapor from invading; in actual application, the waterproof coating 101 can form a protective film, which can effectively block water and moisture, prevent them from penetrating into the cable, thereby protecting the electrical performance of the cable, thereby helping to prolong the service life of the cable, and the sealing rubber layer 102 can tightly adhere to the inner wall of the outer protective sleeve 1, provide good sealing effect, further prevent water vapor from invading, and the sealing rubber layer 102 can adapt to the expansion and contraction of the cable under temperature change, thereby maintaining good sealing performance, and the waterproof coating 101 and the sealing rubber layer 102 are arranged together to form an external waterproof mechanism of the photovoltaic cable, which provides comprehensive waterproof protection.
[0023] In the embodiment, as shown in Figure 1 and Figure 2 As shown, the second insulation layer 6 and the internal waterproof layer 5 are filled with carbon fibers; it should be noted that the photovoltaic cable often encounters various situations during use and is inevitably subjected to impact from the outside, so in the utility model, the second insulation layer 6 and the internal waterproof layer 5 are filled with carbon fibers, which together with the metal support layer 2 protect the internal cable core 7 from being damaged and support the entire photovoltaic cable assembly; in actual use, carbon fibers have extremely high tensile strength and stiffness, which can significantly improve the mechanical properties of the cable assembly, making it more impact-resistant and pressure-resistant, so filling carbon fibers between the second insulation layer 6 and the internal waterproof layer 5 can provide additional physical protection for the cable core 7, prevent damage caused by external impact, and the thermal expansion coefficient of carbon fibers is low, which can reduce the internal stress of the cable caused by temperature changes, thereby reducing the influence of thermal cycles on the performance of the cable core 7, and the metal support layer 2 provides a solid structural support for the cable interior, ensuring that the cable will not deform or be damaged during transportation and installation, and the metal support layer 2 can also protect the cable core 7 from external physical impact such as extrusion and impact, thereby prolonging the service life of the cable.
[0024] In the embodiment, as shown in Figure 4As shown, the internal waterproof layer 5 is composed of a first waterproof layer 501 and a second waterproof layer 502, wherein the second waterproof layer 502 is attached to the outer wall of the second insulation layer 6, and the first waterproof layer 501 is attached to the inner wall of the first insulation layer 4; it should be noted that in actual use, if water vapor penetrates into the cable through the outer protective sleeve 1, the first waterproof layer 501 and the second waterproof layer 502 provided outside the second insulation layer 6 and the cable core 7 will be in contact with the water vapor in turn, thereby effectively intercepting and preventing further invasion of water vapor, thereby protecting the cable core 7, and during this period, through the multi-layer waterproof design of the first waterproof layer 501 and the second waterproof layer 502, double insurance is provided, that is, even if the outer protective sleeve 1 is slightly damaged or defective and water vapor invades, the internal waterproof layer 5 can still effectively prevent water from penetrating into the interior of the cable, thereby preventing corrosion of the cable core 7 and aging of the insulation material caused by water, thereby prolonging the service life of the cable, and the double waterproof mechanism formed by the outer protective sleeve 1 and the internal waterproof layer 5 can improve the overall waterproof performance of the cable, ensuring that the interior of the cable remains dry under different environmental conditions.
[0025] In this embodiment, as shown in Figure 4 The first waterproof layer 501 and the second waterproof layer 502 are filled with a desiccant 503; it should be noted that in addition to the first waterproof layer 501 and the second waterproof layer 502, the internal waterproof layer 5 in the utility model also has a desiccant 503 filled between the first waterproof layer 501 and the second waterproof layer 502, when external water vapor enters the interior of the cable and reaches the internal waterproof layer 5, it will first contact the first waterproof layer 501 and be intercepted, a small amount of water vapor that penetrates through the first waterproof layer 501 will reach the desiccant 503 and be absorbed, and in actual use, the desiccant 503 absorbs a small amount of water vapor that penetrates through the first waterproof layer 501, reducing the possibility of water vapor penetrating further into the interior of the cable, thereby enhancing the overall waterproof effect, and the desiccant 503 helps to maintain a dry environment inside the cable, preventing moisture from accumulating inside the cable, helping to maintain the insulation performance of the cable and preventing electrical faults, and at the same time, the desiccant 503 also absorbs internal moisture, reducing the erosion of the cable core 7 by water, prolonging its service life, and preventing fluctuations in the performance of the cable caused by moisture, improving the stability and reliability of the entire photovoltaic system.
[0026] In this embodiment, as shown in Figure 1 and Figure 2As shown, the first insulation layer 4 and the second insulation layer 6 jointly constitute an insulation mechanism; it should be noted that generally, an insulation material needs to be added inside the photovoltaic cable to form an insulation layer to provide good electrical insulation and provide electrical safety protection for the photovoltaic system, and in the utility model, two insulation layers, the first insulation layer 4 and the second insulation layer 6, are arranged inside the cable, wherein the first insulation layer 4 is arranged on the outer wall of the inner waterproof layer 5, and the second insulation layer 6 is arranged outside the cable core 7, so that in actual application, the first insulation layer 4 is located outside the inner waterproof layer 5, which can further ensure the dryness and cleanliness of the inside of the cable, thereby providing additional electrical insulation protection and at the same time providing certain physical protection to protect the inner waterproof layer 5 from mechanical damage and environmental factors, while the second insulation layer 6 directly wraps the cable core 7, which is the core part of the electrical insulation of the cable, ensuring good electrical isolation between the cable core 7 and the external environment, and at the same time helping to maintain the structural integrity of the cable to prevent physical movement and friction of the cable core 7, thereby reducing the risk of cable damage, and the separate arrangement of the first insulation layer 4 and the second insulation layer 6 can realize layered protection, so that even if one layer of insulation material is damaged, the other layer can still provide protection, thereby improving the overall safety.
[0027] In the embodiment, as shown in Figure 1 and Figure 3 , the outer wall of the outer protective sleeve 1 is provided with anti-skid grooves 103; it should be noted that when the operating personnel use and install the photovoltaic cable assembly, the cable may often fall off due to its smooth surface, thereby increasing the installation time and affecting the overall work efficiency, and therefore, in the utility model, the outer wall of the outer protective sleeve 1 is provided with anti-skid grooves 103, so that the anti-skid grooves 103 provide additional surface texture for the outer protective sleeve 1 in actual use, so that the operating personnel have a better grip when holding the cable, thereby reducing the risk of the cable slipping off, and since the cable is not easy to slip off, the installation personnel can install and adjust the position of the cable faster, thereby improving the overall installation efficiency, and at the same time, the design of the anti-skid grooves 103 makes the cable easier to control and operate during installation, thereby reducing the wear of the outer protective sleeve 1 caused by repeated gripping and moving, thereby prolonging the service life of the cable assembly, and in outdoor or harsh weather conditions, the anti-skid grooves 103 can also provide better gripping performance to ensure the smooth progress of the cable installation and maintenance work.
[0028] The use method and advantages of the utility model are as follows:
[0029] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, first, the operator can install the photovoltaic cable assembly, at this time, the anti-skid groove 103 opened on the outer wall of the outer protective sleeve 1 can provide additional surface texture, so that the cable is not easy to slip, so that the cable is installed and adjusted faster, and the installed cable assembly, the waterproof coating 101 coated on the outer wall of the outer protective sleeve 1 can effectively prevent external water vapor from invading the inside of the cable, thereby protecting the electrical performance of the cable, and the sealing rubber layer 102 provided on the inner wall of the outer protective sleeve 1 can provide good sealing effect, further prevent water vapor from invading, if the outer protective sleeve 1 is slightly damaged and water vapor invades, the first waterproof layer 501 and the second waterproof layer 502 provided outside the second insulation layer 6 and the cable core 7 will be in contact with the water in turn, thereby effectively intercepting and preventing water vapor from invading the inside of the cable, during which a small amount of water vapor passing through the first waterproof layer 501 will be absorbed by the desiccant 503, thereby preventing moisture from accumulating inside the cable and maintaining a dry environment inside the cable, thereby maintaining the insulation performance of the cable and preventing electrical failure. The thermal insulation layer 3 can effectively resist the damage of cold weather to the cable assembly and ensure the normal operation of the cable. The first insulation layer 4 and the second insulation layer 6 provided inside the photovoltaic cable can provide double electrical insulation protection for the inside of the cable, and through layered protection, the cable core 7 and the outside environment are well electrically isolated. During actual use, the metal support layer 2 provided inside the cable provides a solid structural support to ensure that the cable will not be deformed or damaged due to external impact during use, and the carbon fiber filled between the second insulation layer 6 and the internal waterproof layer 5 can provide additional physical protection for the cable core 7, so that it is not damaged and ensures the normal operation of the cable.
[0030] The basic principles, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application and do not limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.
Claims
1. A photovoltaic cable assembly with a self-contained double waterproof structure, comprising an outer protective sleeve (1), characterized in that: The outer protective sleeve (1) has a metal support layer (2) inside, the outer wall of the outer protective sleeve (1) is coated with a waterproof coating (101), the inner wall of the outer protective sleeve (1) is provided with a sealing rubber layer (102), and the outer wall of the outer protective sleeve (1) is provided with an anti-slip groove (103). The metal support layer (2) has an insulation layer (3) inside, the insulation layer (3) has a first insulation layer (4) inside, the first insulation layer (4) has an inner waterproof layer (5) inside, the inner waterproof layer (5) has a second insulation layer (6) inside, carbon fiber is filled between the second insulation layer (6) and the inner waterproof layer (5), the inner waterproof layer (5) is composed of a first waterproof layer (501) and a second waterproof layer (502), wherein the second waterproof layer (502) is attached to the outer wall of the second insulation layer (6), the first waterproof layer (501) is attached to the inner wall of the first insulation layer (4), a desiccant (503) is filled between the first waterproof layer (501) and the second waterproof layer (502), the second insulation layer (6) has a cable core (7) inside, and the first insulation layer (4) and the second insulation layer (6) together constitute an insulation mechanism.