A cable for an energy storage system with a multi-layer temperature-resistant structure

Abstract

The present invention discloses a cable for an energy storage system with a multi-layer temperature-resistant structure, relating to cables for energy storage systems, including a conductive core, a wear-resistant layer, a wear-resistant tube, and a protective sleeve. An insulating layer is provided outside the conductive core, and a heat-insulating tape is provided outside the shielding layer. A filling heat-insulating board and filling material are provided in the gap between the heat-insulating tape and the shielding layer. An inner temperature-resistant layer is provided outside the heat-insulating tape, an outer temperature-resistant layer is provided outside the reinforcing layer, and a wear-resistant layer is provided outside the outer temperature-resistant layer. The cable for the energy storage system with the multi-layer temperature-resistant structure is provided 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, making the cable 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 during use, and the wear-resistant tube has good protection for the outside of the cable.

Description

Technical Field

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

[0002] An energy storage system is a process of storing energy through a medium or device and releasing it when needed. It can be achieved through devices such as batteries, inductors, and capacitors. The energy storage system not only has the function of storing electrical energy, but also can provide functions such as smooth transition, peak shaving and valley filling, frequency modulation and voltage regulation, so as to support the stable operation of the power system.

[0003] Energy storage systems have a wide range of applications in the power system, which can help balance supply and demand and improve the reliability and efficiency of the power system. For example, in the case of unstable renewable energy generation, the energy storage system can store excess electrical energy and release it when needed, thus ensuring the continuity and stability of power supply. In addition, energy storage systems can also be used in fields such as electric vehicle charging stations and smart homes to provide flexible energy management and use.

[0004] Energy storage cables usually 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 should be able to withstand large current and voltage changes and adapt to the frequent charge and discharge cycles of the energy storage system. The application scope of energy storage cables is very wide, and they can be used for energy storage and balance of various energy sources such as power stations, wind farms, and solar power stations; support distributed energy storage systems such as electric vehicle charging stations and residential photovoltaic power stations; improve the efficiency of the energy storage system, enhance the reliability of the system, reduce user costs, and achieve intelligent dispatching of the power grid.

[0005] For example, the Chinese utility model patent with the application number 201620730359.9 discloses a weather-resistant cable structure. The conductor of the weather-resistant cable structure adopts a structure form of at least two copper wires twisted together. This structure has better ductility compared with traditional conductors, and the insulating material wrapping the conductor and the outermost outer sheath are both made of materials with strong weather resistance. Anti-ultraviolet and anti-ozone reagents are added to the outer sheath during the production process to prevent the outer sheath from being damaged under temperature changes and sunlight irradiation, and the service life of the cable is extended. However, there are still certain defects in its device;

[0006] When the cable is used for a long time, its surface has a certain temperature. At the same time, facing the test of different ambient temperatures, under the double attack of internal and external temperatures, the internal materials of the cable are easily damaged, thus reducing the overall service life of the cable.

[0007] Therefore, we propose a cable for an energy storage system with a multi-layer temperature-resistant structure to solve the problems raised above. Summary of the invention

[0008] 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.

[0009] 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;

[0010] 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.

[0011] Preferably, the conductive core is made of copper conductor, and the copper content in the copper conductor is above 99.9%.

[0012] 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.

[0013] 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.

[0014] 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.

[0015] Preferably, a number of reinforcing steels are provided on the reinforcing layer. The reinforcing steels are distributed in a circular structure, and the reinforcing layer is in close contact with the inner heat-resistant layer and the outer heat-resistant layer.

[0016] With the above structural design, the reinforcing steels of the reinforcing layer play a role in protecting the interior of the cable. The use of multiple reinforcing steels can improve the compressive resistance of the reinforcing layer, thereby enhancing the protection effect on the interior of the cable. The inner heat-resistant layer and the outer heat-resistant layer can improve the heat resistance inside and outside the cable, making the cable not easily damaged under the action of its own high temperature and external high temperature, thus extending the service life of the cable.

[0017] Preferably, the surface of the wear-resistant pipe is made of wear-resistant material, and the interior of the wear-resistant pipe is designed with a hollow structure.

[0018] With the above structural design, the wear-resistant pipe is arranged outside the wear-resistant layer, which can further improve the abrasion resistance of the exterior of the cable. The hollow structure design of the wear-resistant pipe will not excessively increase the weight of the entire cable, making the cable more convenient to use.

[0019] Preferably, a lightweight heat-resistant layer is provided in the wear-resistant pipe, and there are multiple wear-resistant pipes, which are located on the outer surface of the wear-resistant layer.

[0020] With the above structural design, the wear-resistant pipe has good heat resistance, which can thus improve the heat resistance of the cable during use. The wear-resistant pipe has good protection for the exterior of the cable.

[0021] Preferably, the support column and the fixed block are elastically connected under the action of the reinforcing elastic rope, and there are two support columns.

[0022] 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 an external force, it can be slightly shaken and buffered through the reinforcing elastic rope, so that a large force will not be generated on the clamping plate, thereby extending the service life of the clamping plate, and at the same time, the position where the clamping plate is connected to the wear-resistant pipe will not be damaged.

[0023] Preferably, the clamping plate is designed in an arc structure, and anti-slip patterns are provided on both opposite sides of the clamping plate.

[0024] With the above structural design, the clamping plate is more stable when clamping and fixing the wear-resistant pipe.

[0025] Preferably, sliding grooves are provided on one side of the threaded rod close to the limit block, and the limit block is slidably connected to the sliding grooves.

[0026] With the above structural design, after the clamping plate and the wear-resistant pipe are disassembled, the clamping plate is clamped with the sliding grooves on the threaded rod through the limit blocks on the support columns, so that the clamping plate will not rotate along the threaded rod.

[0027] 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.

[0028] 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.

[0029] 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:

[0030] 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;

[0031] 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;

[0032] 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;

[0033] 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

[0034] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0035] Figure 2 This is a schematic diagram of the structure of the protective cover of the present invention when it is installed;

[0036] Figure 3 For the present invention Figure 2 Schematic diagram of the upward view structure in the present invention;

[0037] Figure 4 For the present invention Figure 2 Enlarged schematic diagram of the structure at position A in the present invention;

[0038] Figure 5 Schematic diagram of the connection structure between the protective sleeve and the wear-resistant pipe of the present invention;

[0039] Figure 6 Schematic diagram of the sectional view of the support column in the present invention;

[0040] Figure 7 For the present invention Figure 6 Enlarged schematic diagram of the structure at position B in the present invention;

[0041] Figure 8 Schematic diagram of the distribution structure of the conductive core of the present invention.

[0042] In the figure: 1. Conductive core; 2. Insulating layer; 3. Shielding layer; 4. Filled thermal insulation board; 5. Filling material; 6. Thermal insulation binding tape; 7. Inner heat-resistant layer; 8. Reinforcement layer; 9. Outer heat-resistant layer; 10. Wear-resistant layer; 11. Wear-resistant pipe; 12. Protective sleeve; 13. Fixed block; 14. Reinforcing elastic rope; 15. Support column; 16. Clamping plate; 17. Through hole; 18. Limiting block; 19. Threaded rod; 20. Chute; 21. Limiting nut. Specific embodiments

[0043] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0044] Please refer to Figures 1-8The 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;

[0045] An abrasion-resistant tube 11 is installed outside the abrasion-resistant layer 10. The surface of the abrasion-resistant tube 11 is made of abrasion-resistant material, and the inside of the abrasion-resistant tube 11 is designed with a hollow structure. The abrasion-resistant tube 11 is arranged outside the abrasion-resistant layer 10, which can further improve the abrasion resistance of the outside of the cable. The hollow structure design of the abrasion-resistant tube 11 will not excessively increase the weight of the entire cable, making the cable more convenient to use. A lightweight heat-resistant layer is arranged in the abrasion-resistant tube 11, and there are multiple abrasion-resistant tubes 11. The abrasion-resistant tubes 11 are located on the outer surface of the abrasion-resistant layer 10. The abrasion-resistant tubes 11 have good heat resistance, so as to improve the heat resistance of the cable during use. The abrasion-resistant tubes 11 have good protection for the outside of the cable. A protective sleeve 12 is arranged outside the abrasion-resistant tube 11. The protective sleeve 12 can be sleeved outside the abrasion-resistant layer 10. Fixed blocks 13 are installed on the left and right sides of the upper surface and the lower surface of the protective sleeve 12, and support columns 15 are installed on the fixed blocks 13 through reinforcing elastic ropes 14. The support columns 15 are elastically connected to the fixed 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 on the outermost part of the cable, when the protective sleeve 12 is subjected to an external force, it can be shaken and buffered slightly through the reinforcing elastic ropes 14, so that a large force will not be generated on the clamping plate 16, thereby improving the service life of the clamping plate 16, and at the same time, the position where the clamping plate 16 is connected to the abrasion-resistant tube 11 will not be damaged. Clamping plates 16 are installed on the support columns 15. The clamping plates 16 are designed with an arc-shaped structure, and anti-slip patterns are arranged on the opposite sides of the clamping plates 16, making the clamping plates 16 more stable when clamping and fixing the abrasion-resistant tube 11. Through holes 17 are opened on the support columns 15, and limit blocks 18 are installed inside the through holes 17. Threaded rods 19 penetrate through the through holes 17. Sliding grooves 20 are opened on one side of the threaded rods 19 close to the limit blocks 18. The limit blocks 18 are slidably connected to the sliding grooves 20. After the clamping plate 16 and the abrasion-resistant tube 11 are disassembled, the clamping plate 16 is clamped with the sliding 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 limit nuts 21 are installed on the front and back sides of the threaded rod 19. The limit nuts 21 are slidably connected to the threaded rod 19. The length of the protective sleeve 12 is designed according to the actual laying of the energy storage system cable and can be designed in multiple sections. When fixing the protective sleeve 12 with the abrasion-resistant tube 11 through the clamping plate 16, the clamping plate 16 is clamped on the abrasion-resistant tube 11, and then the limit nuts 21 on the threaded rod 19 are rotated. The clamping plates 16 are squeezed to approach each other through the limit nuts 21 to clamp the abrasion-resistant tube 11, thus 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 easily worn position of the cable. The installation is simple and the use cost is low.

[0046] Working principle: When using the cable for the energy storage system with a multi-layer temperature-resistant structure, first, through the design of the filling insulation board 4, the filling material 5 is separated, so that the filling material 5 is not likely to move greatly inside the cable when stressed, thereby reducing the wear of the filling material 5 on the inside of the cable, reducing the use loss of the cable, and increasing the service life of the cable; separating the filling material 5 makes the filling material 5 not likely to move greatly inside the cable when stressed, thereby reducing the wear of the filling material 5 on the inside of the cable, reducing the use loss of the cable, and increasing the service life of the cable.

[0047] When fixing through the clamping plate 16 and the wear-resistant pipe 11, the clamping plate 16 is snapped onto the wear-resistant pipe 11, and then the limit nut 21 on the threaded rod 19 is rotated. By the limit nut 21 squeezing the clamping plates 16 to approach each other, the wear-resistant pipe 11 is clamped, 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 easily worn position of the cable. 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 well-known to those skilled in the art.

[0048] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within 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); 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; A slide groove (20) is provided on one side of the threaded rod (19) close to the limit block (18), and the limit block (18) is slidably connected to the slide groove (20); 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.

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 in 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: The reinforcement layer (8) is provided with a plurality of reinforcement steels, the reinforcement steels are distributed in a circular structure, and the reinforcement 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 pipe (11) is made of wear-resistant material, and the interior of the wear-resistant pipe (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 clamping plate (16) is designed to be an arc-shaped structure, and anti-slip grooves are arranged on opposite sides of the clamping plate (16).

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