Cable with multi-layer temperature-resistant structure for energy storage system

Abstract

The invention discloses an energy storage system cable with a multi-layer temperature-resistant structure, and relates to an energy storage system cable, the energy storage system cable comprises a conductive core, a wear-resistant layer, a wear-resistant pipe and a protective sleeve, the exterior of the conductive core is provided with an insulating layer, and the exterior of a shielding layer is provided with a thermal insulation wrapping tape. A filling heat preservation plate and a filling material are arranged in a gap between the heat preservation wrapping tape and the shielding layer, an inner temperature-resistant layer is arranged on the outer side of the heat preservation wrapping tape, an outer temperature-resistant layer is arranged on the outer portion of the reinforcing layer, and a wear-resistant layer is arranged on the outer portion of the outer temperature-resistant layer. The energy storage system cable with the multi-layer temperature-resistant structure is provided with the inner temperature-resistant layer, the outer temperature-resistant layer and the wear-resistant pipe, and the inner temperature-resistant layer and the outer temperature-resistant layer can improve the heat resistance inside and outside the cable, so that the cable is not easy to damage under the action of self high temperature and external high temperature, the service life of the cable is prolonged, the wear-resistant pipe has better heat resistance, and the service life of the cable is prolonged. Therefore, the heat resistance of the cable in use can be improved, and the wear-resistant pipe has good protection performance on the outside of the cable.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage system cables, and in particular to a cable for an energy storage system with a multi-layer temperature-resistant structure. Background Art

[0002] Energy storage system is a process of storing energy through a medium or device and releasing it when needed. It can be realized through devices such as batteries, inductors, capacitors, etc. Energy storage system not only has the function of storing electric energy, but also provides smooth transition, peak shaving and valley filling, frequency and voltage regulation, etc., thereby supporting the stable operation of the power system.

[0003] Energy storage systems are widely used in power systems and can help balance supply and demand and improve the reliability and efficiency of power systems. For example, when renewable energy generation is unstable, energy storage systems can store excess electricity and release it when needed, thereby ensuring the continuity and stability of power supply. In addition, energy storage systems can also be used in electric vehicle charging stations, smart homes and other fields to provide flexible energy management and use.

[0004] Energy storage cables generally need to have good electrical properties, including low resistance to reduce energy loss, and high insulation performance to ensure safe and reliable power transmission. They must be able to withstand large current and voltage changes and adapt to the frequent charge and discharge cycles of energy storage systems. The application range of energy storage cables is very wide. They can be used for energy storage and balancing of various energy sources such as power stations, wind farms, solar power stations, etc.; support distributed energy storage systems such as electric vehicle charging stations, residential photovoltaic power stations, etc.; improve the efficiency of energy storage systems, improve system reliability, reduce user costs, and realize intelligent scheduling of power grids. ‌ For example, the Chinese utility model patent with application number 201620730359.9 discloses a weather-resistant cable structure, the conductor of which is a twisted structure of at least two copper wires. Compared with traditional conductors, this structure has better ductility, and the insulating material wrapping the conductor and the outermost outer sheath are made of materials with strong weather resistance. Anti-ultraviolet and anti-ozone agents are added to the outer sheath during the production process to prevent the outer sheath from being damaged by temperature changes and sunlight, thus extending the service life of the cable. However, the device still has certain defects; When the cable is used for a long time, its surface has a certain temperature. At the same time, it faces the test of different ambient temperatures. Under the double attack of internal and external temperatures, the internal materials of the cable are easily damaged, thereby reducing the overall service life of the cable.

[0005] Therefore, we propose a cable for energy storage system with a multi-layer temperature-resistant structure to solve the above-mentioned problems. Summary of the invention

[0006] The purpose of the present invention is to provide a cable for an energy storage system with a multi-layer temperature-resistant structure to solve the problem raised in the above background technology that the cables on the current market have a certain surface temperature when used for a long time, and face the test of different ambient temperatures. Under the double attack of internal and external temperatures, the internal materials of the cable are easily damaged, thereby reducing the overall service life of the cable.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a cable for an energy storage system with a multi-layer heat-resistant structure, comprising a conductive core, a wear-resistant layer, a wear-resistant tube and a protective sleeve, wherein an insulating layer is arranged outside the conductive core, and a shielding layer is arranged outside the insulating layer, a heat-insulating tape is arranged outside the shielding layer, a filling heat-insulating board and a filling material are arranged in the gap between the heat-insulating tape and the shielding layer, an inner heat-resistant layer is arranged outside the heat-insulating tape, and a reinforcement layer is arranged outside the inner heat-resistant layer, an outer heat-resistant layer is arranged outside the reinforcement layer, and a wear-resistant layer is arranged outside the outer heat-resistant layer; A wear-resistant tube is installed on the outside of the wear-resistant layer, and a protective sleeve is arranged on the outside of the wear-resistant tube. The protective sleeve can be sleeved on the outside of the wear-resistant layer, and fixing blocks are installed on the left and right sides of the upper surface and the lower surface of the protective sleeve, and support columns are installed on the fixing blocks through reinforcing elastic ropes, and clamping plates are installed on the support columns. Through holes are opened on the support columns, and limiting blocks are installed inside the through holes. A threaded rod passes through the through hole, and limiting nuts are installed on the front and back sides of the threaded rod.

[0008] Preferably, the conductive core is made of copper conductor, and the copper content in the copper conductor is above 99.9%.

[0009] With the above structural design, the copper conductor has high conductivity and can reduce the loss of electric energy during transmission compared to other materials with poor conductivity. At the same time, it has high tensile strength and flexibility, which facilitates the wiring of cables in energy storage systems.

[0010] Preferably, the filling insulation board is designed as an arc-shaped structure, the filling insulation board is distributed in a ring structure, and the filling material is a lightweight insulating material.

[0011] The above structural design makes the cable as a whole lighter. At the same time, through the design of the filling insulation board, the filling material is separated, so that the filling material is not easy to move significantly inside the cable when subjected to force, thereby reducing the wear of the filling material on the inside of the cable, reducing the cable's use loss, and increasing the cable's service life.

[0012] Preferably, a plurality of reinforcing steels are provided on the reinforcement layer, the reinforcing steels are distributed in a circular structure, and the reinforcement layer is in close contact with the inner temperature-resistant layer and the outer temperature-resistant layer.

[0013] With the above structural design, the reinforcing steel of the reinforcement layer can protect the inside of the cable. The use of multiple reinforcing steels can improve the compressive resistance of the reinforcement layer, thereby improving the protective effect on the inside of the cable. The inner temperature-resistant layer and the outer temperature-resistant layer can improve the heat resistance inside and outside the cable, making the cable less likely to be damaged by its own high temperature and external high temperature, thereby increasing the service life of the cable.

[0014] Preferably, the surface of the wear-resistant pipe is made of wear-resistant material, and the interior of the wear-resistant pipe is designed as a hollow structure.

[0015] With the above structural design, the wear-resistant tube is arranged outside the wear-resistant layer, which can further improve the wear resistance of the cable exterior. The hollow structure design of the wear-resistant tube will not increase the weight of the entire cable too much, making the cable more convenient to use.

[0016] Preferably, a lightweight temperature-resistant layer is provided in the wear-resistant pipe, and a plurality of wear-resistant pipes are provided, and the wear-resistant pipes are located on the outer surface of the wear-resistant layer.

[0017] With the above structural design, the wear-resistant tube has good heat resistance, thereby improving the heat resistance of the cable when in use, and the wear-resistant tube has good protection for the outside of the cable.

[0018] Preferably, the support column and the fixing block are elastically connected under the action of a reinforcing elastic rope, and two support columns are provided.

[0019] With the above structural design, when the protective sleeve is installed on the outermost part of the cable, when the protective sleeve is subjected to external force, it can be slightly shaken and buffered by the reinforced elastic rope, so that no large force will be generated on the clamping plate, thereby increasing the service life of the clamping plate and at the same time causing no damage to the connection position between the clamping plate and the wear-resistant tube.

[0020] Preferably, the clamping plate is designed to be an arc-shaped structure, and anti-slip grooves are provided on opposite sides of the clamping plate.

[0021] The above structural design makes the clamping plate more stable when clamping and fixing the wear-resistant pipe.

[0022] Preferably, a sliding groove is provided on one side of the threaded rod close to the limiting block, and the limiting block is slidably connected to the sliding groove.

[0023] With the above structural design, after the clamping plate and the wear-resistant tube are disassembled, the clamping plate is clamped with the slide groove on the threaded rod through the limit block on the support column, so that the clamping plate will not rotate along the threaded rod.

[0024] Preferably, the limit nut is slidably connected to the threaded rod, and the length of the protective sleeve is designed according to the actual laying of the energy storage system cable, and can be designed in multiple sections.

[0025] With the above structural design, when the clamping plate is fixed to the wear-resistant tube, the clamping plate is clamped on the wear-resistant tube, and then the limiting nut on the threaded rod is rotated, and the clamping plates are squeezed close to each other by the limiting nut to clamp the wear-resistant tube, thereby completing the installation of the protective cover. The protective cover can be installed at any position of the cable of the energy storage system, and the installation is convenient. When necessary, the protective cover can be installed at the position of the cable that is prone to wear. The installation is simple and the use cost is low.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows: the cable for energy storage system with a multi-layer temperature-resistant structure: 1. It is equipped with an inner temperature-resistant layer, an outer temperature-resistant layer and a wear-resistant tube. The inner temperature-resistant layer and the outer temperature-resistant layer can improve the heat resistance inside and outside the cable, so that the cable is not easily damaged under the action of its own high temperature and external high temperature, thereby improving the service life of the cable. The wear-resistant tube has good heat resistance, thereby improving the heat resistance of the cable when in use, and the wear-resistant tube has good protection for the outside of the cable; 2. A filling insulation board is provided. Through the design of the filling insulation board, the filling materials are separated, so that the filling materials are not easy to move significantly inside the cable when subjected to force, thereby reducing the wear of the filling materials on the inside of the cable, reducing the use loss of the cable, and increasing the service life of the cable; 3. A reinforced elastic rope is provided. When the protective sleeve is installed on the outermost part of the cable, when the protective sleeve is subjected to external force, the reinforced elastic rope can be used for small-amplitude shaking and buffering, so that a large force will not be generated on the clamping plate, thereby increasing the service life of the clamping plate and at the same time not causing damage to the connection position between the clamping plate and the wear-resistant tube; 4. A protective cover is provided. When the clamping plate is fixed to the wear-resistant tube, the clamping plate is clamped on the wear-resistant tube, and then the limiting nut on the threaded rod is rotated. The clamping plates are squeezed close to each other through the limiting nut to clamp the wear-resistant tube, thereby completing the installation of the protective cover. The protective cover can be installed at any position of the cable of the energy storage system. It is easy to install. When needed, the protective cover can be installed at the position of the cable that is prone to wear. The installation is simple and the use cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the protective cover of the present invention when it is installed; Figure 3 For the present invention Figure 2 Middle upward structural diagram; Figure 4 For the present invention Figure 2 The enlarged structural diagram at A in the middle; Figure 5 This is a schematic diagram of the connection structure between the protective sleeve and the wear-resistant pipe of the present invention; Figure 6 This is a schematic diagram of the cross-sectional structure of the support column of the present invention; Figure 7 For the present invention Figure 6 The enlarged structural diagram at B in the middle; Figure 8 It is a schematic diagram of the conductive core distribution structure of the present invention.

[0028] In the figure: 1. conductive core; 2. insulating layer; 3. shielding layer; 4. filling insulation board; 5. filling material; 6. insulation tape; 7. inner temperature-resistant layer; 8. reinforcement layer; 9. outer temperature-resistant layer; 10. wear-resistant layer; 11. wear-resistant tube; 12. protective cover; 13. fixing block; 14. reinforcement elastic rope; 15. support column; 16. clamping plate; 17. through hole; 18. limit block; 19. threaded rod; 20. slide groove; 21. limit nut. DETAILED DESCRIPTION

[0029] 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.

[0030] See also Figure 1-Figure 8The present invention provides a technical solution: a cable for an energy storage system with a multi-layer heat-resistant structure, comprising a conductive core 1, an insulating layer 2, a shielding layer 3, a filling insulation board 4, a filling material 5, a heat-insulating bag 6, an inner heat-resistant layer 7, a reinforcement layer 8, an outer heat-resistant layer 9, a wear-resistant layer 10, a wear-resistant tube 11, a protective sleeve 12, a fixing block 13, a reinforcing elastic rope 14, a supporting column 15, a clamping plate 16, a through hole 17, a limit block 18, a threaded rod 19, a slide groove 20 and a limit nut 21, wherein the conductive core 1 is provided with an insulating layer 2 on the outside, and the conductive core 1 is provided with a plurality of insulating layers. A copper conductor is used, and the copper content in the copper conductor is more than 99.9%. The copper conductor has high conductivity. Compared with other materials with poor conductivity, it can reduce the loss of electric energy during transmission. At the same time, it has high tensile strength and flexibility, which is convenient for the wiring of the cable in the energy storage system. A shielding layer 3 is arranged outside the insulating layer 2, and a heat preservation tape 6 is arranged outside the shielding layer 3. A filling insulation board 4 and a filling material 5 are arranged in the gap between the heat preservation tape 6 and the shielding layer 3. The filling insulation board 4 is designed as an arc structure. The filling insulation The plates 4 are distributed in an annular structure, and the filling material 5 is made of lightweight insulating material, so that the cable as a whole is relatively light. At the same time, through the design of the filling insulation plate 4, the filling material 5 is separated, so that the filling material 5 is not easy to move greatly inside the cable when subjected to force, thereby reducing the wear of the filling material 5 on the inside of the cable, reducing the use loss of the cable, and improving the service life of the cable. The outer side of the insulation bag 6 is provided with an inner temperature-resistant layer 7, and the outer side of the inner temperature-resistant layer 7 is provided with a reinforcement layer 8, and a plurality of reinforcement steels are provided on the reinforcement layer 8. The reinforcement steel is The circular structure is distributed, and the reinforcement layer 8 is in close contact with the inner temperature-resistant layer 7 and the outer temperature-resistant layer 9. The reinforcement steel of the reinforcement layer 8 protects the inside of the cable. The use of multiple reinforcement steels can improve the compression resistance of the reinforcement layer 8, thereby improving the protection effect on the inside of the cable. The inner temperature-resistant layer 7 and the outer temperature-resistant layer 9 can improve the heat resistance inside and outside the cable, so that the cable is not easily damaged under the action of its own high temperature and external high temperature, thereby improving the service life of the cable. The outer temperature-resistant layer 9 is arranged outside the reinforcement layer 8, and the outer temperature-resistant layer 9 is arranged outside the wear-resistant layer 10; A wear-resistant tube 11 is installed on the outside of the wear-resistant layer 10. The surface of the wear-resistant tube 11 is made of wear-resistant material, and the inside of the wear-resistant tube 11 is designed with a hollow structure. The wear-resistant tube 11 is arranged on the outside of the wear-resistant layer 10, which can further improve the wear resistance of the cable outside. The hollow structure design of the wear-resistant tube 11 will not increase the weight of the entire cable too much, making the cable more convenient to use. A lightweight heat-resistant layer is arranged in the wear-resistant tube 11, and multiple wear-resistant tubes 11 are arranged. The wear-resistant tube 11 is located on the outer surface of the wear-resistant layer 10. The wear-resistant tube 11 has good heat resistance, thereby improving the heat resistance of the cable when in use. The wear-resistant tube 11 has good protection for the outside of the cable, and the outside of the wear-resistant tube 11 is provided with an anti- The protective sleeve 12 can be sleeved outside the wear-resistant layer 10, and the upper surface and the left and right sides of the lower surface of the protective sleeve 12 are installed with fixing blocks 13, and the fixing blocks 13 are installed with support columns 15 through reinforcing elastic ropes 14. The support columns 15 are elastically connected to the fixing blocks 13 under the action of the reinforcing elastic ropes 14, and there are two support columns 15. When the protective sleeve 12 is installed at the outermost part of the cable, when the protective sleeve 12 is subjected to external force, it can be slightly shaken and buffered by the reinforcing elastic ropes 14, so that it will not generate a large force on the clamping plate 16, thereby improving the service life of the clamping plate 16, and at the same time will not cause damage to the position where the clamping plate 16 is connected to the wear-resistant tube 11. A clamping plate 16 is installed, and the clamping plate 16 is designed with an arc-shaped structure, and anti-slip grooves are provided on the opposite sides of the clamping plate 16, so that the clamping plate 16 is more stable when clamping and fixing the wear-resistant tube 11. Through holes 17 are provided on the support columns 15, and limit blocks 18 are installed inside the through holes 17. A threaded rod 19 passes through the through holes 17, and a slide groove 20 is provided on the side of the threaded rod 19 close to the limit block 18. The limit block 18 is slidably connected with the slide groove 20. After the clamping plate 16 and the wear-resistant tube 11 are disassembled, the clamping plate 16 is clamped with the slide groove 20 on the threaded rod 19 through the limit block 18 on the support column 15, so that the clamping plate 16 will not rotate along the threaded rod 19, and the front of the threaded rod 19 Limiting nuts 21 are installed on both sides of the rear, and the limiting nuts 21 are slidably connected to the threaded rod 19. The length of the protective sleeve 12 is designed according to the laying of the actual energy storage system cable, and a multi-stage design can be performed. When the clamping plate 16 is fixed to the wear-resistant tube 11, the clamping plate 16 is clamped on the wear-resistant tube 11, and then the limiting nuts 21 on the threaded rod 19 are rotated. The clamping plates 16 are squeezed close to each other by the limiting nuts 21 to clamp the wear-resistant tube 11, thereby completing the installation of the protective sleeve 12. The protective sleeve 12 can be installed at any position of the energy storage system cable, and the installation is convenient. When needed, the protective sleeve 12 can be installed at the position of the cable that is prone to wear. The installation is simple and the use cost is low.

[0031] Working principle: When using the energy storage system cable with a multi-layer heat-resistant structure, first, the filling material 5 is separated by the design of the filling insulation board 4, so that the filling material 5 is not easy to move significantly inside the cable when subjected to force, thereby reducing the wear of the filling material 5 on the inside of the cable, reducing the cable's use loss, and increasing the service life of the cable; the filling material 5 is separated, so that the filling material 5 is not easy to move significantly inside the cable when subjected to force, thereby reducing the wear of the filling material 5 on the inside of the cable, reducing the cable's use loss, and increasing the cable's service life.

[0032] When the clamping plate 16 is fixed to the wear-resistant tube 11, the clamping plate 16 is clamped on the wear-resistant tube 11, and then the limiting nut 21 on the threaded rod 19 is rotated, and the clamping plates 16 are squeezed close to each other by the limiting nut 21 to clamp the wear-resistant tube 11, thereby completing the installation of the protective cover 12. The protective cover 12 can be installed at any position of the energy storage system cable, and the installation is convenient. When necessary, the protective cover 12 can be installed at the position of the cable that is easy to wear. The installation is simple and the use cost is low. Thus a series of work is completed. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0033] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cable for an energy storage system having a multi-layer temperature-resistant structure, comprising a conductive core (1), a wear-resistant layer (10), a wear-resistant tube (11) and a protective sleeve (12), characterized in that: An insulating layer (2) is arranged outside the conductive core (1), and a shielding layer (3) is arranged outside the insulating layer (2), a heat-insulating tape (6) is arranged outside the shielding layer (3), a filling heat-insulating board (4) and a filling material (5) are arranged in the gap between the heat-insulating tape (6) and the shielding layer (3), an inner heat-resistant layer (7) is arranged outside the heat-insulating tape (6), and a reinforcement layer (8) is arranged outside the inner heat-resistant layer (7), an outer heat-resistant layer (9) is arranged outside the reinforcement layer (8), and a wear-resistant layer (10) is arranged outside the outer heat-resistant layer (9); A wear-resistant tube (11) is installed outside the wear-resistant layer (10), and a protective sleeve (12) is arranged outside the wear-resistant layer (10). The protective sleeve (12) is sleeved outside the wear-resistant layer (10). Fixed blocks (13) are installed on the upper surface and the left and right sides of the lower surface of the protective sleeve (12), and a support column (15) is installed on the fixed block (13) through a reinforcing elastic rope (14). A clamping plate (16) is installed on the support column (15). A through hole (17) is opened on the support column (15), and a limit block (18) is installed inside the through hole (17). A threaded rod (19) passes through the through hole (17), and limit nuts (21) are installed on the front and rear sides of the threaded rod (19).

2. The cable for energy storage system with a multi-layer temperature-resistant structure according to claim 1, characterized in that: The conductive core (1) is made of a copper conductor, and the copper content of the copper conductor is above 99.9%.

3. The cable for energy storage system with a multi-layer temperature-resistant structure according to claim 1, characterized in that: The filling insulation board (4) is designed as an arc-shaped structure, the filling insulation board (4) is distributed in a ring structure, and the filling material (5) is made of lightweight insulating material.

4. The cable for energy storage system with a multi-layer temperature-resistant structure according to claim 1, characterized in that: A plurality of reinforcing steels are arranged on the reinforcing layer (8), the reinforcing steels are distributed in a circular structure, and the reinforcing layer (8) is in close contact with the inner temperature-resistant layer (7) and the outer temperature-resistant layer (9).

5. The cable for energy storage system with a multi-layer temperature-resistant structure according to claim 1, characterized in that: The surface of the wear-resistant tube (11) is made of wear-resistant material, and the interior of the wear-resistant tube (11) is designed as a hollow structure.

6. The cable for energy storage system with a multi-layer temperature-resistant structure according to claim 5, characterized in that: The wear-resistant pipe (11) is provided with a light temperature-resistant layer, and a plurality of wear-resistant pipes (11) are provided, and the wear-resistant pipes (11) are located on the outer surface of the wear-resistant layer (10).

7. The cable for energy storage system with a multi-layer temperature-resistant structure according to claim 1, characterized in that: The support column (15) and the fixed block (13) are elastically connected under the action of the reinforcing elastic rope (14), and two support columns (15) are provided.

8. The cable for energy storage system with a multi-layer temperature-resistant structure according to claim 1, characterized in that: The clamping plate (16) is designed to be an arc-shaped structure, and anti-slip grooves are provided on opposite sides of the clamping plate (16).

9. The cable for energy storage system with a multi-layer temperature-resistant structure according to claim 1, characterized in that: A sliding groove (20) is provided on one side of the threaded rod (19) close to the limiting block (18), and the limiting block (18) is slidably connected to the sliding groove (20).

10. The cable for energy storage system with a multi-layer temperature-resistant structure according to claim 1, characterized in that: The limiting nut (21) is slidably connected to the threaded rod (19), and the length of the protective sleeve (12) is designed according to the laying of the actual energy storage system cable, and is designed in multiple sections.

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