A protective photovoltaic cable

Abstract

The present invention discloses a protective photovoltaic cable, which relates to the technical field of photovoltaic cables. The purpose is to provide a protective photovoltaic cable that reflects light to prevent ultraviolet rays from damaging the cable. The technical key points include a core assembly, a heat insulation assembly is arranged on the outside of the core assembly, a binding assembly for fixing its position is arranged on the outside of the heat insulation assembly, an outer polyethylene protective layer is wrapped around the outer side of the binding assembly, and a reflective assembly is arranged on the outer side of the outer polyethylene protective layer. The technical effect is that by setting a reflective assembly, the infrared and ultraviolet rays in the light can be reflected efficiently by using an aluminum foil reflective layer, so as to prevent ultraviolet rays from irradiating the cable and causing the problem of accelerated aging of the cable. At the same time, the infrared rays can be reflected to a large extent to block the heat from being transmitted to the cable, so as to prevent the cable from being aged by ultraviolet rays and from heating up by infrared rays.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic cables, in particular to a protective photovoltaic cable. Background Art

[0002] Photovoltaic cable is a cable specially used in photovoltaic power generation systems. It is mainly used to connect photovoltaic modules, inverters, distribution boxes and other equipment to ensure the safe transmission of solar power. Photovoltaic cable has the characteristics of high temperature resistance, low temperature resistance, oil resistance, acid and alkali resistance, UV resistance, flame retardancy and environmental protection. It can work stably under harsh climatic conditions to ensure the stability and efficiency of power supply. Photovoltaic power generation is a high-quality clean and renewable energy. Photovoltaic power stations are widely distributed in Gobi or deserts with sufficient sunlight, open terrain, few shelters, and traditional cash crops are difficult to grow. These scenes have strong light intensity, more abundant visible light and ultraviolet rays, which can improve the efficiency of photovoltaic power generation.

[0003] However, the scope of photovoltaic power plants is large, and the corresponding photovoltaic cables are laid for a long time. In order to facilitate the maintenance and inspection of photovoltaic cables and save the construction cost of burying photovoltaic cables, photovoltaic cables are usually exposed directly to the outside. Although this method is convenient for maintenance and reduces construction costs, it will cause the photovoltaic cables to be exposed to sunlight for a long time.

[0004] Most of the existing photovoltaic cables change the proportion of the outer polyethylene to achieve the effect of preventing aging and isolating ultraviolet rays. This method can only alleviate the aging problem and can provide protection in the short term. However, after long-term outdoor use, the outer polyethylene layer will still age and break, reducing the protective effect of the cable and making it difficult to repair after losing the protective effect. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies of the prior art, the present invention provides a protective photovoltaic cable that reflects light to prevent ultraviolet rays from damaging the cable.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a protective photovoltaic cable, comprising a battery core assembly, a heat insulation assembly is arranged on the outside of the battery core assembly, a binding assembly for fixing its position is arranged on the outside of the heat insulation assembly, an outer polyethylene protective layer is wrapped on the outside of the binding assembly, and a reflective assembly is arranged on the outside of the outer polyethylene protective layer;

[0009] The reflective component comprises EPE foam, the inner side of the EPE foam is provided with an adhesive layer bonded to the outer polyethylene protective layer, the outer side of the EPE foam is provided with an aluminum foil reflective layer capable of reflecting infrared rays, ultraviolet rays and visible light, the aluminum foil reflective layer is pressed with rolling grooves; the aluminum foil reflective layer is provided with aluminum foil disconnection grooves at intervals;

[0010] The outer side of the reflective component is provided with a transparent heat shrinkable tube for protecting the aluminum foil reflective layer.

[0011] Preferably, the battery cell assembly includes multiple groups of conductive cores, inner partition frames are provided in the center of the multiple groups of conductive cores, outer partition frames are provided between the conductive cores, the outer sides of the outer partition frames and the conductive cores are plastic-sealed with a resin filling layer, and the outer side of the resin filling layer is provided with an inner polyethylene protective layer that is bonded to the thermal insulation assembly.

[0012] Preferably, the outer partition frame comprises a nylon outer frame body encapsulated in a resin filling layer, the two sides of the nylon outer frame body are provided with a first arc surface which fits the conductive core, the nylon outer frame body is provided with a cooling liquid cavity, and the outer side of the nylon outer frame body is provided with a thermal bridge which conducts heat to the thermal insulation component.

[0013] Preferably, the inner partition frame comprises a nylon inner frame body located at the center of the conductive core, the side of the nylon inner frame body is provided with a second arc surface which fits with the conductive core, the nylon inner frame body is fitted with the nylon outer frame body, and a hot melt adhesive strip is provided on the connecting surface.

[0014] Preferably, a communication optical fiber is provided at the center of the nylon inner frame, and an electromagnetic isolation layer is provided between the communication optical fiber and the nylon inner frame.

[0015] Preferably, the thermal insulation assembly comprises a flat tube attached to an inner polyethylene protective layer, wherein the flat tube is filled with modified asphalt.

[0016] Preferably, the flat tube is provided with hot pressing grooves at equal intervals to separate the internal space, and injection valves are provided between the hot pressing grooves on the flat tube.

[0017] Preferably, the injection valve includes a valve body connected to the interior of the flat tube, an injection port is provided on the valve body, a discharge port connected to the injection port is provided at a position inside the flat tube, a valve sheet is provided at a position corresponding to the injection port in the valve body, a movable baffle is provided at a position corresponding to the discharge port, and a boss is provided within the valve body which fits with the inner side of the movable baffle.

[0018] Preferably, the binding assembly comprises a first fiber band wound clockwise on the thermal insulation assembly, and a second fiber band wound counterclockwise on the first fiber band.

[0019] Preferably, the outer layer of the transparent heat shrinkable tube is sprayed with an odor-resistant coating.

[0020] (III) Beneficial effects

[0021] Compared with the prior art, the present invention provides a protective photovoltaic cable, which has the following beneficial effects:

[0022] 1. By setting a reflective component, the reflective component consists of EPE foam, aluminum foil reflective layer and adhesive layer. The aluminum foil reflective layer can efficiently reflect infrared and ultraviolet rays in the light to avoid ultraviolet rays irradiating on the cable, causing the problem of accelerated aging of the cable. At the same time, reflecting infrared rays can greatly block the transfer of heat to the cable, so as to prevent the cable from being affected by ultraviolet rays and heating up due to infrared rays. In addition, the EPE foam can also protect the cable, reduce the collision damage to the cable, and play a heat insulation effect. The adhesive layer on the inside can adhere the EPE foam to the outer polyethylene protective layer. When the local aluminum foil reflective layer and EPE foam are damaged, they can be cut and torn off, and then new EPE foam and aluminum foil reflective layer can be pasted and filled to achieve the purpose of maintenance and repair.

[0023] 2. By setting up a heat insulation component, the heat insulation component is mainly composed of a flat tube covering the battery cell component, and the flat tube is filled with insulating modified asphalt. The modified asphalt can play a role in thermal insulation, and the modified asphalt can also use its own flexibility to protect the battery cell component, reduce the collision damage to the battery cell component, and play a buffering protection effect. At the same time, the modified asphalt itself has a low softening point. When the thermal bridge conducts the heat of the conductive core to the outside, the modified asphalt will absorb the heat, soften itself and store the heat. When the conductive core does not generate heat at night, the modified asphalt will gradually solidify and release heat to the conductive core through the thermal bridge. In this way, the temperature difference between day and night of the conductive core is reduced, and the harm of thermal expansion and contraction of the cable is reduced.

[0024] 3. By setting up an external partition frame, the external partition frame mainly includes a nylon outer frame body arranged between the conductive cores. The nylon outer frame body uses the first arc-shaped surfaces on both sides to fit with the conductive cores and space them so that the conductive cores are arranged equidistantly. The nylon outer frame body has excellent insulation effect and has a certain hardness. It can standardize the position of the conductive core during production, and a cooling liquid cavity is provided in the nylon outer frame. When the conductive core is heated due to current transmission, the heat will be transferred to the cooling liquid cavity, and the coolant inside it will absorb the heat, thereby cooling the cable to prevent it from overheating and damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0026] Figure 2 This is a schematic diagram of installing the reflective assembly of the present invention;

[0027] Figure 3 It is a three-dimensional schematic diagram of the battery core assembly of the present invention;

[0028] Figure 4 It is a schematic diagram of the connection between the outer partition frame and the inner partition frame of the present invention;

[0029] Figure 5 is a cross-sectional schematic diagram of a reflective assembly of the present invention;

[0030] Figure 6 For the present invention Figure 5 The enlarged schematic diagram at A in the middle;

[0031] Figure 7 It is a cross-sectional schematic diagram of the heat insulation assembly of the present invention;

[0032] Figure 8 It is a cross-sectional schematic diagram of the injection valve of the present invention;

[0033] Fig. 9 It is a three-dimensional schematic diagram of the restraining assembly of the present invention;

[0034] Fig.10 It is a cross-sectional schematic diagram of the present invention.

[0035] In the figure: 1, battery cell assembly; 101, conductive core;

[0036] 102, external partition frame; 1021, nylon external frame body; 1022, cooling liquid cavity; 1023, first arc surface; 1024, heat conduction bridge;

[0037] 103, inner partition frame; 1031, nylon inner frame body; 1032, second arc-shaped surface; 1033, hot-melt adhesive strip;

[0038] 104, resin filling layer; 105, inner polyethylene protective layer;

[0039] 2. thermal insulation assembly; 201. flat tube; 202. modified asphalt; 203. hot pressing tank;

[0040] 204, injection valve; 2041, valve body; 2042, injection port; 2043, valve diaphragm; 2044, discharge port; 2045, boss; 2046, movable baffle;

[0041] 3. Binding component; 301. First fiber band; 302. Second fiber band;

[0042] 4. Outer polyethylene protective layer;

[0043] 5. Reflection component; 501. EPE foam; 502. Aluminum foil reflection layer; 503. Adhesive layer; 504. Rolling groove; 505. Aluminum foil disconnecting groove;

[0044] 6. Transparent heat shrink tubing; 7. Odor-resistant coating; 8. Electromagnetic isolation layer; 9. Communication optical fiber. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] See also Figure 1-10 A protective photovoltaic cable comprises a battery core assembly 1, a heat insulation assembly 2 is arranged on the outside of the battery core assembly 1, a restraining assembly 3 for fixing the position of the heat insulation assembly 2 is arranged on the outside of the heat insulation assembly 2, an outer polyethylene protective layer 4 is wrapped on the outer side of the restraining assembly 3, a reflective assembly 5 is arranged on the outer side of the outer polyethylene protective layer 4, the reflective assembly 5 comprises an EPE foam 501, an adhesive layer 503 bonded to the outer polyethylene protective layer 4 is arranged on the inner side of the EPE foam 501, an aluminum foil reflective layer 502 capable of reflecting infrared rays, ultraviolet rays and visible light is arranged on the outer side of the EPE foam 501, a rolling groove 504 is pressed on the aluminum foil reflective layer 502; and aluminum foil disconnecting grooves 505 are arranged at intervals on the aluminum foil reflective layer 502;

[0047] In the present invention, a reflective component 5 is provided, and the reflective component 5 is composed of EPE foam 501, an aluminum foil reflective layer 502, and an adhesive layer 503. The aluminum foil reflective layer 502 can be used to efficiently reflect infrared and ultraviolet rays in the light. It is known that the ultraviolet photon energy in sunlight is relatively high. When it irradiates the surface of an object, it will trigger a photochemical reaction and cause the object to age. Infrared rays have a significant thermal effect. When infrared rays irradiate the surface of an object, the molecules and atoms in the object will absorb the energy of the infrared rays, thereby intensifying their thermal motion. This intensification of thermal motion is manifested as an increase in the temperature of the object. Aluminum has a high reflection efficiency for infrared and ultraviolet rays, which can usually reach about 80%-90%. Therefore, the aluminum foil reflective layer 502 can be used to protect the cable and greatly reduce the impact of sunlight on the cable.

[0048] In addition, the EPE foam 501 can also protect the cable, reduce the collision damage to the cable, and play a heat insulation effect, and the adhesive layer 503 located on the inside can adhere the EPE foam 501 to the outer polyethylene protective layer 4. When the local aluminum foil reflective layer 502 and the EPE foam 501 are damaged, they can be cut and torn off, and then new EPE foam 501 and aluminum foil reflective layer 502 can be pasted and filled to achieve the purpose of maintenance and repair;

[0049] In addition, rolling grooves 504 are pressed on the aluminum foil reflective layer 502 by using a roller with a special shape. The rolling grooves 504 can cause more irregular wrinkles on the aluminum foil reflective layer 502. These irregular wrinkles can disperse the reflected infrared and ultraviolet rays to avoid the harm caused by the focusing of infrared and ultraviolet rays. Aluminum foil disconnecting grooves 505 are also opened on the aluminum foil reflective layer 502. The aluminum foil disconnecting grooves 505 can disconnect the aluminum foil reflective layer 502 to make it into independent segments, thereby preventing the aluminum foil reflective layer 502 from having the problem of continuous electrical conductivity.

[0050] The outer side of the reflective component 5 is provided with a transparent heat shrinkable tube 6 for protecting the aluminum foil reflective layer 502;

[0051] By setting the transparent heat shrinkable tube 6, after the aluminum foil reflective layer 502 and the EPE foam 501 are pasted on the outer polyethylene protective layer 4, the transparent heat shrinkable tube 6 is sleeved on the outer layer of the aluminum foil reflective layer 502, and then heated and shrunk, the aluminum foil reflective layer 502 is protected by the transparent heat shrinkable tube 6 to prevent the aluminum foil reflective layer 502 from being scratched by gravel and sand when it is laid in the Gobi and desert. At the same time, the transparent material itself will not affect the reflection work of the aluminum foil reflective layer 502.

[0052] like Figure 3 As shown, the battery cell assembly 1 includes a plurality of groups of conductive cores 101, an inner partition frame 103 is provided in the center of the plurality of groups of conductive cores 101, an outer partition frame 102 is provided between the conductive cores 101, a resin filling layer 104 is plastic-sealed on the outer side of the outer partition frame 102 and the conductive core 101, an inner polyethylene protective layer 105 which is bonded to the thermal insulation component 2 is provided on the outer side of the resin filling layer 104, the outer partition frame 102 includes a nylon outer frame 1021 which is plastic-sealed in the resin filling layer 104, first arc-shaped surfaces 1023 which are bonded to the conductive core 101 are provided on both sides of the nylon outer frame 1021, a cooling liquid cavity 1022 is opened in the nylon outer frame 1021, and a heat-conducting bridge 1024 which conducts heat to the thermal insulation component 2 is provided on the outer side of the nylon outer frame 1021;

[0053] By setting an outer partition frame 102, the outer partition frame 102 mainly includes a nylon outer frame body 1021 arranged between the conductive cores 101, and the nylon outer frame body 1021 uses the first arc-shaped surfaces 1023 on both sides to fit with the conductive cores 101 and space them so that the conductive cores 101 are arranged equidistantly. The nylon outer frame body 1021 has an excellent insulation effect and has a certain hardness. The position of the conductive core 101 can be standardized during production, and a cooling liquid cavity 1022 is provided in the nylon outer frame body 1021. When the conductive core 101 generates heat due to current transmission, the heat will be transmitted to the cooling liquid cavity 1022, and the heat will be absorbed by the cooling liquid inside, so as to cool the cable to prevent it from being overheated and damaged;

[0054] The photovoltaic device can generate electricity when there is sufficient sunlight during the day, but cannot generate electricity at night when there is no sunlight. As a result, the conductive core 101 transmits current and generates heat during the day, but stops transmitting current and does not generate heat at night, resulting in a large temperature difference between day and night for the conductive core 101, which is prone to excessive thermal expansion and contraction. At this time, the coolant in the cooling liquid chamber 1022 can absorb heat during the day and release it at night, thereby reducing the temperature difference between day and night for the conductive core 101 and reducing the degree of deformation of the conductive core 101. In addition, the thermal bridge 1024 can utilize its own efficient thermal conduction efficiency to conduct excess heat to the thermal insulation component 2, and utilize the thermal insulation component 2 to further absorb and store the heat of the conductive core 101 during operation.

[0055] like Figure 4 As shown, the inner partition frame 103 includes a nylon inner frame body 1031 located at the center of the conductive core 101, and the side of the nylon inner frame body 1031 is provided with a second arc surface 1032 that fits the conductive core 101, and the nylon inner frame body 1031 fits with the nylon outer frame body 1021, and a hot melt adhesive strip 1033 is provided on the connecting surface;

[0056] By setting up the inner partition frame 103, the inner partition frame 103 can be filled between the conductive cores 101 with the nylon inner frame body 1031, and support the conductive core 101, so that the conductive core 101 can be stably placed, and a hot melt adhesive strip 1033 bonded to the nylon outer frame body 1021 is provided on the nylon inner frame body 1031, so that the nylon inner frame body 1031 and the nylon outer frame body 1021 can be connected during the production process, thereby ensuring the stability and reliability of the support and positioning of the conductive core 101.

[0057] A communication optical fiber 9 is provided at the center of the nylon inner frame 1031, and an electromagnetic isolation layer 8 is provided between the communication optical fiber 9 and the nylon inner frame 1031;

[0058] By providing the communication optical fiber 9 and the electromagnetic isolation layer 8, the communication optical fiber 9 can transmit signals, so that after the photovoltaic power station completes the cable laying, there is no need to lay the communication optical fiber 9, thereby reducing the labor intensity of the installation work. The electromagnetic isolation layer 8 can prevent the electromagnetic influence of the conductive core 101 after it is energized on the communication optical fiber 9. The communication optical fiber 9 uses glass material, so that it does not generate electromagnetic properties, and thus it will not be electromagnetically interfered when laid in the conductive core 101, thereby ensuring the purpose of stable communication.

[0059] like Figure 7 As shown, the heat insulation assembly 2 includes a flat tube 201 attached to the inner polyethylene protective layer 105, and the flat tube 201 is filled with modified asphalt 202;

[0060] By setting a heat insulation component 2, the heat insulation component 2 is mainly composed of a flat tube 201 covering the battery core component 1, and the flat tube 201 is filled with insulating modified asphalt 202. The modified asphalt 202 can play a role in heat insulation, and the modified asphalt 202 can also protect the battery core component 1 with its own flexibility, reduce the collision damage to the battery core component 1, and play a role in buffer protection. At the same time, the softening point of the modified asphalt 202 itself is low. When the heat-conducting bridge 1024 conducts the heat of the conductive core 101 to the outside, the modified asphalt 202 will absorb the heat, soften itself and store the heat. When the conductive core 101 does not generate heat at night, the modified asphalt 202 will gradually solidify and release heat to the conductive core 101 through the heat-conducting bridge 1024. In this way, the temperature difference between day and night of the conductive core 101 is reduced, and the harm of thermal expansion and contraction of the cable is reduced;

[0061] In addition, the modified asphalt 202 also has a certain self-repairing effect. When the outer polyethylene protective layer 4 is accidentally punctured, the modified asphalt 202 will flow into the perforation and fill the hole caused by the puncture, thereby achieving the purpose of automatic repair after damage and preventing external moisture or chemicals from entering the outer polyethylene protective layer 4 through the perforation. The insulating properties of the modified asphalt 202 can also prevent leakage problems.

[0062] The flat tube 201 is provided with hot pressing grooves 203 at equal intervals to separate the internal space, and a material injection valve 204 is provided between the hot pressing grooves 203 on the flat tube 201;

[0063] By setting up a hot pressing tank 203 and using hot pressing equipment to extrude the flat tube 201, the inner wall of the flat tube 201 adheres to each other, resulting in an independent sealed space in the flat tube 201, so that the modified asphalt 202 is confined in the corresponding chamber, preventing the modified asphalt 202 from flowing freely after softening, and avoiding the modified asphalt 202 from gathering in low-lying positions.

[0064] like Figure 8 As shown, the injection valve 204 includes a valve body 2041 connected to the inside of the flat tube 201, a material injection port 2042 is provided on the valve body 2041, a material outlet 2044 connected to the material injection port 2042 is provided at a position inside the flat tube 201, a valve piece 2043 is provided at a position corresponding to the material injection port 2042 in the valve body 2041, a movable baffle 2046 is provided at a position corresponding to the material outlet 2044, and a boss 2045 is provided in the valve body 2041 to fit the inner side of the movable baffle 2046;

[0065] By providing the valve piece 2043 and the movable baffle 2046, the modified asphalt 202 can be directly injected into the flat tube 201 through the injection port 2042 during production. The modified asphalt 202 pushes the valve piece 2043 open and enters the flat tube 201 through the injection port 2042. The boss 2045 in the valve body 2041 will support the movable baffle 2046 so that it cannot rotate inward. At the same time, the valve piece 2043 blocks the modified asphalt 202 in a downward tilted manner to prevent the modified asphalt 202 from overflowing after injection, thereby achieving the purpose of one-way injection.

[0066] like Fig. 9 As shown, the binding assembly 3 includes a first fiber band 301 wound clockwise on the thermal insulation assembly 2, and a second fiber band 302 wound counterclockwise on the first fiber band 301;

[0067] By setting the first fiber band 301 and the second fiber band 302, the first fiber band 301 is wound on the thermal insulation component 2 in a clockwise manner to fix the thermal insulation component 2, so that the thermal insulation component 2 can fit tightly with the battery cell component 1, and the second fiber band 302 is wound counterclockwise and cross-matched with the first fiber band 301, so as to further improve the fastening degree of the thermal insulation component 2, prevent the generation of internal gaps, and ensure the quality of the cable.

[0068] The outer layer of the transparent heat shrinkable tube 6 is sprayed with an odor coating 7;

[0069] By providing the odor coating 7, the odor coating 7 can emit a pungent odor slowly for a long time, and use the odor to drive away wild animals, prevent wild animals from gnawing and damaging the outer transparent heat shrink tubing 6, and ensure the safety of the cable.

[0070] Working principle: When sunlight shines on the aluminum foil reflective layer 502, the aluminum foil reflective layer 502 will reflect the visible light, ultraviolet light and infrared light in the sunlight to prevent ultraviolet light and infrared light from damaging the outer polyethylene protective layer 4. At the same time, the EPE foam 501 plays a role in heat insulation, protection and buffering. The adhesive layer 503 makes the EPE foam 501 adhere to the outer polyethylene protective layer 4, so that the damaged part of the aluminum foil reflective layer 502 can be replaced after it is damaged.

[0071] When the conductive core 101 transmits electricity during the day, the heat it generates is absorbed by the cooling liquid cavity 1022. When the cooling liquid cavity 1022 is saturated, excess heat will be transferred outwards through the thermal bridge 1024, thereby preventing the conductive core 101 from overheating. The heat transferred outwards is absorbed by the modified asphalt 202, which softens when heated and stores the heat. When the conductive core 101 does not transmit electricity at night, the modified asphalt 202 gradually solidifies and transfers heat to the cooling liquid cavity 1022 through the thermal bridge 1024, and then the cooling liquid cavity 1022 transfers the heat to the conductive core 101, thereby reducing the temperature difference between day and night of the conductive core 101.

[0072] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A protective photovoltaic cable, comprising a battery core assembly (1), characterized in that: A heat insulation component (2) is provided on the outside of the battery cell component (1); a restraining component (3) for fixing the position of the heat insulation component (2) is provided on the outside of the heat insulation component (2); an outer polyethylene protective layer (4) is wrapped around the outer side of the restraining component (3); and a reflective component (5) is provided on the outer side of the outer polyethylene protective layer (4); The reflective component (5) comprises an EPE foam (501), an adhesive layer (503) bonded to an outer polyethylene protective layer (4) is provided on the inner side of the EPE foam (501), an aluminum foil reflective layer (502) capable of reflecting infrared rays, ultraviolet rays and visible light is provided on the outer side of the EPE foam (501), and rolling grooves (504) are pressed on the aluminum foil reflective layer (502); and aluminum foil disconnection grooves (505) are provided at intervals on the aluminum foil reflective layer (502); The outer side of the reflective component (5) is provided with a transparent heat shrinkable tube (6) for protecting the aluminum foil reflective layer (502); The heat insulation component (2) comprises a flat tube (201) attached to an inner polyethylene protective layer (105), wherein the flat tube (201) is filled with modified asphalt (202); The binding component (3) comprises a first fiber band (301) wound clockwise on the thermal insulation component (2), and a second fiber band (302) wound counterclockwise on the first fiber band (301).

2. A protective photovoltaic cable according to claim 1, characterized in that: The battery core assembly (1) comprises a plurality of groups of conductive cores (101), wherein an inner partition frame (103) is provided at the center of the plurality of groups of conductive cores (101), an outer partition frame (102) is provided between the conductive cores (101), a resin filling layer (104) is plastic-sealed on the outer sides of the outer partition frame (102) and the conductive cores (101), and an inner polyethylene protective layer (105) is provided on the outer side of the resin filling layer (104) and is bonded to the thermal insulation assembly (2).

3. A protective photovoltaic cable according to claim 2, characterized in that: The outer partition frame (102) comprises a nylon outer frame (1021) plastic-encapsulated in a resin filling layer (104); first arc-shaped surfaces (1023) that fit the conductive core (101) are provided on both sides of the nylon outer frame (1021); a cooling liquid cavity (1022) is provided in the nylon outer frame (1021); and a heat-conducting bridge (1024) that conducts heat to the heat insulation component (2) is provided on the outer side of the nylon outer frame (1021).

4. A protective photovoltaic cable according to claim 3, characterized in that: The inner partition frame (103) comprises a nylon inner frame body (1031) located at the center of the conductive core (101); a second arc-shaped surface (1032) is provided on the side of the nylon inner frame body (1031) and is fitted with the conductive core (101); the nylon inner frame body (1031) is fitted with the nylon outer frame body (1021), and a hot-melt adhesive strip (1033) is provided on the connecting surface.

5. A protective photovoltaic cable according to claim 4, characterized in that: A communication optical fiber (9) is provided at the center of the nylon inner frame (1031), and an electromagnetic isolation layer (8) is provided between the communication optical fiber (9) and the nylon inner frame (1031).

6. A protective photovoltaic cable according to claim 1, characterized in that: The flat tube (201) is provided with hot pressing grooves (203) at equal intervals for separating the internal space, and injection valves (204) are provided at positions between the hot pressing grooves (203) on the flat tube (201).

7. A protective photovoltaic cable according to claim 6, characterized in that: The injection valve (204) comprises a valve body (2041) connected to the inside of the flat tube (201); a material injection port (2042) is provided on the valve body (2041); a material discharge port (2044) connected to the material injection port (2042) is provided at a position inside the flat tube (201); a valve plate (2043) is provided at a position inside the valve body (2041) corresponding to the material injection port (2042); a movable baffle (2046) is provided at a position corresponding to the material discharge port (2044); and a boss (2045) is provided inside the valve body (2041) and is fitted with the inner side of the movable baffle (2046).

8. The protective photovoltaic cable according to claim 1, characterized in that: The outer layer of the transparent heat shrinkable tube (6) is sprayed with an odor coating (7).

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