Fire-resistant water-blocking highly flexible energy storage cable

Abstract

The utility model relates to the technical field of energy storage cables, and discloses a fire-resistant water-blocking high-flexibility energy storage cable, including a longitudinal water-blocking cable core, a fire-resistant layer, a radial water-blocking layer, an insulating layer and a sheath layer. A plurality of conductor single wires are twisted into a longitudinal water-blocking cable core, and filled with a two-component water-blocking sealant, which has good bending and contact sealing properties and prevents moisture from entering longitudinally; a fire-resistant layer made of glass fiber cloth and mica paper is wrapped around the outside of the longitudinal water-blocking cable core to improve insulation and fire resistance; a radial water-blocking layer made of aluminum tape and plastic film is then wrapped to shield electromagnetic interference and provide radial water-blocking and moisture-proof properties; then silicone rubber is used to extrude and process an insulating layer on the outside to improve acid and alkali resistance and flame retardancy, aging resistance and meet the requirements of high-flexibility assembly in a small space; the braided layer is woven on the outside, and finally the outer protective coating is dipped, which is conducive to the stable operation of the fire-resistant water-blocking high-flexibility energy storage cable in a humid environment, improves service life and wear resistance, has a comprehensive water-blocking effect, and is highly safe to use.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage cables, in particular to a fire-resistant, water-blocking and highly flexible energy storage cable. Background Art

[0002] Energy storage cables are mainly installed between battery modules on the DC side of the power energy storage system, between battery clusters, between battery clusters and combiner boxes, or between battery clusters and energy storage converters.

[0003] At present, energy storage cables are mainly used in battery modules of energy storage systems. Energy storage systems are equipment systems that use batteries as energy storage carriers and store and release cyclic electric energy through converters. Electrochemical energy storage batteries are mostly lithium-ion batteries. Lithium-ion batteries are prone to battery isolation membrane collapse and internal short circuits under the influence of internal and external factors such as overcharge, overdischarge, overheating, and mechanical collision, which can lead to thermal runaway and may cause fires. Therefore, it is necessary to gradually consider the improvement of fire resistance in energy storage cables.

[0004] With the rapid development of energy storage systems, energy storage cables are widely used indoors and outdoors. Indoors, they are mainly used in narrow places such as distribution cabinets. As the space of the distribution cabinets of energy storage systems is continuously optimized and the cost is continuously reduced, energy storage cables generally require high flexibility to meet the requirements. Outdoors, humid environments are unavoidable, such as places with long-term rain and high moisture. Metal sleeves or waterproof plugs are generally used to protect energy storage cables from moisture. However, once the waterproof measures fail or the seal is not tight, moisture will invade the interior of the energy storage cable, causing the conductor to gradually oxidize, increasing the energy loss in the single conductor line, thereby increasing the conductor resistance and increasing the energy loss of the transmission line; at the same time, if there is a lot of moisture, it will also reduce the insulation performance of the material, so the water-blocking requirements now also need to be taken seriously and considered.

[0005] Currently, the most commonly used material for energy storage cables is radiation cross-linked polyolefin, which has an overall temperature resistance of 125°C. However, it cannot meet the requirements of use in environments with higher temperature and fire resistance requirements and smaller spaces. Utility Model Content

[0006] The purpose of the utility model is to provide a fire-resistant, water-blocking, highly flexible energy storage cable that can operate stably in a humid environment, has high safety in use, and has a more comprehensive water-blocking effect; improves insulation and fire resistance; meets the needs of high-flexibility assembly in a small space, and has excellent aging resistance.

[0007] To achieve this purpose, the utility model adopts the following technical solutions:

[0008] Fire-resistant water-blocking highly flexible energy storage cable, including:

[0009] A longitudinal water-blocking cable core, wherein the longitudinal water-blocking cable core is composed of a plurality of conductor single wires twisted together, and two-component water-blocking sealant is filled between adjacent conductor single wires;

[0010] A fire-resistant layer, the fire-resistant layer is wrapped around the outer surface of the longitudinal water-blocking cable core, the fire-resistant layer comprises glass fiber cloth and mica paper, and the mica paper is bonded to the glass fiber cloth by an organic silicone adhesive;

[0011] A radial water-blocking layer, the radial water-blocking layer is wrapped around the outer surface of the fire-resistant layer, the radial water-blocking layer comprises an aluminum strip and a plastic film bonded to each other, and the thickness of the aluminum strip and the plastic film are equal;

[0012] An insulating layer, the insulating layer wrapping around the outer surface of the radial water-blocking layer, the insulating layer being made of silicone rubber;

[0013] The sheath layer comprises a braided layer and an outer protective coating, the braided layer is wrapped around the outer surface of the insulating layer, and the outer protective coating is arranged on the outer surface of the braided layer.

[0014] As an optional technical solution for the fire-resistant, water-blocking, and highly flexible energy storage cable, the glass fiber cloth is composed of alkali-free glass fibers.

[0015] As an optional technical solution for the fire-resistant, water-blocking, highly flexible energy storage cable, the silicone rubber is a vapor-phase vulcanized silicone rubber, and the vapor-phase vulcanized silicone rubber includes a heat-resistant agent.

[0016] As an optional technical solution for fire-resistant, water-blocking and highly flexible energy storage cables, the vapor-vulcanized silicone rubber also includes a platinum vulcanizing agent.

[0017] As an optional technical solution for the fire-resistant, water-blocking, highly flexible energy storage cable, the silicone rubber includes a flame retardant, and the oxygen index of the silicone rubber is greater than or equal to 48.

[0018] As an optional technical solution for the fire-resistant, water-blocking and highly flexible energy storage cable, the braided layer is formed by braiding polyester yarns.

[0019] As an optional technical solution for the fire-resistant, water-blocking, highly flexible energy storage cable, the braiding density of the braided layer is greater than or equal to 80%.

[0020] As an optional technical solution for the fire-resistant, water-blocking, highly flexible energy storage cable, the braided layer is a pre-dyed braided layer.

[0021] As an optional technical solution for the fire-resistant, water-blocking, highly flexible energy storage cable, the braided layer is dipped with an asphalt mixed coating.

[0022] As an optional technical solution for fire-resistant, water-blocking, and highly flexible energy storage cables, the material of the outer protective coating is silicone epoxy resin, and the Shore hardness of the silicone epoxy resin is between 28A and 32A.

[0023] Beneficial effects of the utility model:

[0024] The utility model provides a fire-resistant water-blocking high-flexibility energy storage cable. The fire-resistant water-blocking high-flexibility energy storage cable comprises a longitudinal water-blocking cable core, a fire-resistant layer, a radial water-blocking layer, an insulating layer and a sheath layer.

[0025] Firstly, a two-component water-blocking sealant is coated on the outside of each conductor single wire, and a plurality of conductor single wires are twisted to form a longitudinal water-blocking cable core, so that the two-component water-blocking sealant is filled between adjacent conductor single wires. The longitudinal water-blocking cable core has good contact sealing, ensuring that water vapor cannot enter the longitudinal water-blocking cable core from the longitudinal direction, thereby preventing the longitudinal flow of water and avoiding oxidation of the conductor single wire and the longitudinal water-blocking cable core; and it is non-corrosive to the conductor single wire and does not affect its conductive performance; at the same time, the two-component water-blocking sealant becomes an elastomer after curing, which meets the bending performance requirements of the longitudinal water-blocking cable core and can also avoid dripping during filling.

[0026] Then, a fire-resistant layer is wrapped around the outer surface of the longitudinal water-blocking cable core. The fire-resistant layer is composed of glass fiber cloth and mica paper bonded by organic silicone adhesive, which improves the insulation and fire resistance of the fire-resistant water-blocking high-flexible energy storage cable.

[0027] Then a radial water-blocking layer is wrapped around the outer surface of the fire-resistant layer. The radial water-blocking layer is a composite tape of aluminum tape and plastic film of equal thickness, has a certain tensile strength and elongation, and has the functions of shielding electromagnetic interference, blocking water and moisture, and is easy to dissipate heat, further achieving the radial water-blocking effect, and improving the safety of the fire-resistant, water-blocking, and highly flexible energy storage cable when used in a humid environment.

[0028] The insulating layer is then formed by extruding vapor-vulcanized silicone rubber on the outer surface of the radial water-blocking layer, which can adapt to the use environment of the fire-resistant, water-blocking, highly flexible energy storage cable and improve its acid and alkali resistance and flame retardancy. The use of silicone rubber as the insulating layer makes the fire-resistant, water-blocking, highly flexible energy storage cable softer and has a smaller bending radius, which can reduce the installation space and meet the needs of small space assembly. It also has excellent effects such as aging resistance and solvent resistance, while increasing the overall current carrying capacity and extending its service life.

[0029] Finally, a sheath layer is arranged on the outer surface of the insulating layer. The braided layer is first woven and wrapped on the outer surface of the insulating layer, and then the outer protective coating is dipped on the outside of the braided layer. This is beneficial to the stable operation of the fire-resistant, water-blocking, and highly flexible energy storage cable, improves its service life and wear resistance, and jointly protects with the insulating layer to enhance the anti-aging ability of the fire-resistant, water-blocking, and highly flexible energy storage cable.

[0030] In summary, the fire-resistant, water-blocking, highly flexible energy storage cable has a lightweight and highly flexible structure, low transmission loss, can fully block water and operate stably, and can be used in long-term rainy and humid outdoor environments. It can solve the instability problem caused by battery short circuit in the energy storage system, protect the cable, and increase the safety of use; at the same time, it also improves the wear resistance, aging resistance, high temperature resistance, fire resistance, acid and alkali resistance of the fire-resistant, water-blocking, highly flexible energy storage cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the cross-sectional structure of a fire-resistant, water-blocking, highly flexible energy storage cable provided by a specific implementation method of the utility model.

[0032] In the figure:

[0033] 1. Longitudinal water-blocking cable core; 2. Fire-resistant layer; 3. Radial water-blocking layer; 4. Insulation layer; 5. Sheath layer; 51. Braided layer; 52. Outer protective coating. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0035] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0038] Specific as Figure 1 As shown in , the utility model discloses a fire-resistant water-blocking high-flexibility energy storage cable, including a longitudinal water-blocking cable core 1, a fire-resistant layer 2, a radial water-blocking layer 3, an insulating layer 4 and a sheath layer 5. The longitudinal water-blocking cable core 1 is composed of a plurality of conductor single wires twisted together, and two-component water-blocking sealant is filled between adjacent conductor single wires, so that the longitudinal water-blocking cable core 1 has good contact sealing, ensuring that water vapor cannot enter the longitudinal water-blocking cable core 1 from the longitudinal direction, achieving the purpose of preventing the longitudinal flow of moisture, avoiding oxidation of the conductor single wire and the longitudinal water-blocking cable core 1, and having no corrosion to the conductor single wire, and does not affect its conductive performance; at the same time, the two-component water-blocking sealant is an elastomer after curing, which meets the bending performance requirements of the longitudinal water-blocking cable core 1, and can also avoid dripping during filling. Specifically, the conductor single wire is made of copper conductor of category 5 or 6 of GB / T3956 standard, which is relatively soft in texture, and has good conductivity, corrosion resistance and welding performance, which can greatly improve the current carrying capacity of the conductor and meet the static flexibility requirements of the energy storage cable in the energy storage system.

[0039] In order to meet the fire resistance requirements of the fire-resistant water-blocking high-flexible energy storage cable, the fire-resistant layer 2 is then wrapped around the outer surface of the longitudinal water-blocking cable core 1. The fire-resistant layer 2 includes glass fiber cloth and mica paper, and the glass fiber cloth and mica paper are bonded by organic silicone adhesive to maintain the flexibility of the fire-resistant layer 2, which can improve the insulation and fire resistance of the fire-resistant water-blocking high-flexible energy storage cable. The addition of mica to the fire-resistant layer 2 can ensure that the fire-resistant water-blocking high-flexible energy storage cable continues to operate for a certain period of time after the fire, and is not affected, so as to timely reflect and handle the energy storage system. Specifically, the fire resistance requirements must comply with the "N" level combustion characteristic standards in the "General Rules for Flame Retardant and Fire-Resistant Wires, Cables or Optical Cables" GB / T 19666.

[0040] In this embodiment, the glass fiber cloth should be composed of alkali-free glass fiber. Glass fiber is an inorganic non-metallic material with excellent performance and is often used as a reinforcing material in composite materials. The alkali metal oxide content in the alkali-free glass fiber is less than 0.8%, and it is an aluminum borosilicate component. Compared with alkali glass fiber, its chemical stability, electrical insulation performance and strength are better, and its acid and alkali resistance is stronger.

[0041] Then, a radial water-blocking layer 3 is wrapped around the outer surface of the fire-resistant layer 2. The radial water-blocking layer 3 includes aluminum strips and plastic films bonded to each other. Aluminum strips and plastic films of equal thickness form a composite strip as the radial water-blocking layer 3, which has a certain tensile strength and elongation. Specifically, the radial water-blocking layer 3 meets the requirements of tensile strength of not less than 75MPa and elongation at break of not less than 20%. The radial water-blocking layer 3 has the functions of shielding electromagnetic interference and blocking water and moisture, and is easy to dissipate heat, further achieving the function of radial water-blocking, and improving the safety of fire-resistant water-blocking high-flexibility energy storage cables in humid environments. By applying a two-component water-blocking sealant to the conductor single wire to form a solid elastomer and the radial water-blocking layer 3, the longitudinal and radial water-blocking effects of the fire-resistant water-blocking high-flexibility energy storage cable are guaranteed, the safety of use in humid environments is comprehensively improved, and the insulation of the fire-resistant water-blocking high-flexibility energy storage cable is guaranteed, and it can operate stably.

[0042] Furthermore, the insulating layer 4 is wrapped on the outer surface of the radial water-blocking layer 3. The insulating layer 4 is made of silicone rubber, which can adapt to the use environment of the fire-resistant water-blocking high-flexible energy storage cable and improve the acid and alkali resistance and flame retardancy. Specifically, the use of high-performance silicone rubber as the insulating layer 4 can make the fire-resistant water-blocking high-flexible energy storage cable softer, with excellent mechanical and physical properties, and the bending radius is much smaller than that of the radiation cross-linked material, which can reduce the installation space and meet the small space assembly requirements; and make it have excellent effects such as aging resistance and solvent resistance, while increasing the overall current carrying capacity and extending the service life.

[0043] At present, silicone rubber is mainly classified into gas phase silicone rubber and precipitation silicone rubber. Precipitation silicone rubber is mainly used in the prior art. The main advantage of precipitation silicone rubber is low cost, but its basic requirement is only to meet 10 days of short-term aging. Conventional silicone rubber has a temperature resistance of 180°C. If it is operated for a long time in a high temperature and high heat environment, that is, equal to or higher than 180°C, ordinary precipitation silicone rubber often breaks under high-intensity environment and even accelerates aging, and its effective life is only a few days. Gas phase silicone rubber is more transparent and shiny than precipitation silicone rubber, and can be used for a long time in a high-intensity environment, even permanently. Therefore, in this embodiment, gas phase vulcanized silicone rubber is used as the basic material of the insulating layer 4. In order to be suitable for the energy storage system, some adjustments are made in the processing ratio, and some additives can be added as appropriate to improve the overall flexibility and other properties. For example, the proportion of added platinum vulcanizer is 1.5%, the release agent is 0.5%, the defrost agent is 0.4%, the heat resistant agent is 1.5%, and the silicone rubber color paste is 1%.

[0044] Specifically, the platinum vulcanizing agent is to accelerate the vulcanization of the fire-resistant water-blocking high-flexible energy storage cable at a high temperature of 400 degrees, while avoiding the production of harmful substances and endangering human health; the defrosting agent is to prevent frost from appearing on the surface of the insulating layer 4 of the silicone rubber that has been placed for a long time; considering that the use environment of the fire-resistant water-blocking high-flexible energy storage cable requires high temperature resistance, the addition of a heat-resistant agent can improve the normal use conditions of the fire-resistant water-blocking high-flexible energy storage cable from 180°C to a maximum of about 260°C. For example, the insulating layer 4 made of vapor-phase vulcanized silicone rubber is required to meet the requirements of a tensile strength of greater than or equal to 8MPa before aging, an elongation at break of greater than or equal to 300%, and a tear strength of greater than or equal to 30N / mm.

[0045] In addition, without adding flame retardants, the oxygen index of the ingredients of vapor-phase vulcanized silicone rubber can only reach a maximum of 32, and the finished fire-resistant, water-blocking, and highly flexible energy storage cables can meet the requirements of single vertical combustion. In order to meet the higher requirements of the A, B, and C burning tests in the "General Rules for Flame Retardant and Fire-Resistant Wires and Cables or Optical Cables" GB / T 19666, only aluminum hydroxide, magnesium hydroxide, and phosphorus nitrogen flame retardants need to be added, and the oxygen index can reach 48, which can greatly improve the safety of use. The above-mentioned insulating layer 4 made of vapor-phase vulcanized silicone rubber meets the requirements of the long-term aging test of 200°C and 3000 hours in the LV216-2-electric vehicle high-voltage cable standard, so that the fire-resistant, water-blocking, and highly flexible energy storage cables can operate stably in high temperature environments, and the service life is greatly improved.

[0046] Furthermore, the fire-resistant, water-blocking, highly flexible energy storage cable is also provided with a sheath layer 5 on the outer surface of its insulation layer 4, and the sheath layer 5 includes a braided layer 51 and an outer protective coating 52. Among them, due to the disadvantages of the silicone rubber insulation layer 4 being soft in texture, poor surface wear resistance, acid resistance, and low strength, most of the existing technologies adopt the method of adding a layer of glass fiber braiding to the energy storage cable to mechanically protect the energy storage cable and improve the cable's wear resistance, high temperature resistance, acid and alkali resistance, and weather resistance. However, the glass fiber braid is brittle and has poor wear resistance. After the wear resistance test, the glass fiber braid was damaged about 90 times in the scrape test, which greatly increases the risk of scratching the internal insulation layer 4. In order to increase the wear resistance of the fire-resistant, water-blocking, highly flexible energy storage cable, the braided layer 51 is wrapped on the outer surface of the insulating layer 4 and is woven with polyester yarn. After the same wear resistance test as the glass fiber, the effect of the braided layer 51 of polyester yarn can normally withstand more than 500 scrapes, which is significantly better than the weaving of glass fiber yarn. The wear resistance of the braided polyester yarn is more excellent, strong and durable, wrinkle-resistant and non-deformable, ensuring the long-term stable operation of the fire-resistant, water-blocking, highly flexible energy storage cable in acid-resistant, alkali-resistant, high-temperature resistant environments. Exemplarily, the braiding density of the braided layer 51 is greater than or equal to 80%, and the braided layer 51 of polyester yarn can withstand erosion from various conditions such as light, heat, moisture, low temperature, acid and alkali gases, and damage from external mechanical forces. Dipping the braided layer 51 in asphalt mixed coating can enhance the anti-corrosion and flame retardant properties of the fire-resistant, water-blocking, highly flexible energy storage cable, and extend the service life and stability of the fire-resistant, water-blocking, highly flexible energy storage cable.

[0047] In this embodiment, the braided layer 51 is a pre-dyed braided layer, and polyester yarn that has been dyed is used for weaving. Compared with the method of using natural color glass fiber braided yarn and dyeing, which is currently used in the market, due to the limitation of processing technology, it needs to be dried for a long time when passing through the dyeing tank. If the time is too short, the surface of the braided layer 51 may not be fully dyed, causing the pigment to fall off. If the time is too long, the surface fibers of the fire-resistant, water-blocking, and highly flexible energy storage cable may be burned, which poses many risks. The pre-dyed braided layer is first woven and wrapped on the outer surface of the insulating layer 4 to avoid the overall dyeing taking a long time or the difficulty in dyeing being sufficient, and to avoid the subsequent frequent long-term mobile use, which may cause the quality risk of surface shedding, and the surface wear resistance is better.

[0048] It is understandable that an outer protective coating 52 is provided outside the braided layer 51 to serve as the sheath layer 5, and is protected together with the insulating layer 4 to enhance the anti-aging ability of the fire-resistant water-blocking high-flexibility energy storage cable. Specifically, the material of the outer protective coating 52 is silicone epoxy resin, which has the advantages of good fluidity, high temperature resistance, and good tear resistance; the outer protective coating 52 is dip-coated on the outside of the braided layer 51 with a high temperature resistant 200-degree silicone epoxy resin, the viscosity of the silicone resin is 35,000 millipascals, the Shore hardness is between 28A and 32A, the tensile strength is greater than 30kg / cm, and the elongation is approximately between 550% and 600%, which is conducive to the normal and stable operation of the fire-resistant water-blocking high-flexibility energy storage cable in a high temperature environment of 200°C, and can even be used continuously for more than 10,000 hours, with good stability, and improved service life and wear resistance.

[0049] The utility model also discloses a method for manufacturing a fire-resistant, water-blocking, highly flexible energy storage cable, which is used to manufacture the above-mentioned fire-resistant, water-blocking, highly flexible energy storage cable, and the manufacturing method comprises the following steps: first, a two-component water-blocking sealant is coated on the outside of each conductor single wire, and a plurality of conductor single wires are twisted to form a longitudinal water-blocking cable core 1, so that the two-component water-blocking sealant is filled between adjacent conductor single wires; then, a fire-resistant layer 2 is wrapped around the outer surface of the longitudinal water-blocking cable core 1; then, a radial water-blocking layer 3 is wrapped around the outer surface of the fire-resistant layer 2; then, an insulating layer 4 is formed by extruding a vapor-phase vulcanized silicone rubber on the outer surface of the radial water-blocking layer 3; finally, a sheath layer 5 is arranged on the outer surface of the insulating layer 4, a pre-dyed braided layer is first woven and wrapped on the outer surface of the insulating layer 4, and then an outer protective coating 52 is dip-coated on the outside of the pre-dyed braided layer. The fire-resistant, water-blocking, and highly flexible energy storage cable produced by the above method has a lightweight and highly flexible structure, low transmission loss, can fully block water and operate stably, and can be used in long-term rainy and humid outdoor environments. It can solve the instability problem caused by battery short circuit in the energy storage system, protect the cable, and increase the safety of use; at the same time, it also improves the wear resistance, aging resistance, high temperature resistance, fire resistance, and acid and alkali resistance of the fire-resistant, water-blocking, and highly flexible energy storage cable.

[0050] Specifically, during the normal high-temperature production vulcanization of the vapor-phase vulcanized silicone rubber used to make the insulating layer 4, two 800°C impact furnaces are used. In addition, there are three vulcanization zones, namely 550°C, 400°C, and 350°C, to ensure sufficient vulcanization of the fire-resistant, water-blocking, and highly flexible energy storage cable.

[0051] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. Fire-resistant water-blocking high-flexibility energy storage cable, characterized in that: include: A longitudinal water-blocking cable core (1), wherein the longitudinal water-blocking cable core (1) is composed of a plurality of conductor single wires twisted together, and two-component water-blocking sealant is filled between adjacent conductor single wires; A fire-resistant layer (2), the fire-resistant layer (2) being wrapped around the outer surface of the longitudinal water-blocking cable core (1), the fire-resistant layer (2) comprising glass fiber cloth and mica paper, the mica paper being bonded to the glass fiber cloth by an organic silicone adhesive; A radial water-blocking layer (3), the radial water-blocking layer (3) being wrapped around the outer surface of the fire-resistant layer (2), the radial water-blocking layer (3) comprising an aluminum strip and a plastic film bonded to each other, the aluminum strip and the plastic film having the same thickness; An insulating layer (4), the insulating layer (4) being wrapped around the outer surface of the radial water-blocking layer (3), and the material of the insulating layer (4) being silicone rubber; A sheath layer (5), the sheath layer (5) comprising a braided layer (51) and an outer protective coating (52), the braided layer (51) being wrapped around the outer surface of the insulating layer (4), and the outer protective coating (52) being arranged on the outer surface of the braided layer (51).

2. The fire-resistant, water-blocking, highly flexible energy storage cable according to claim 1, characterized in that: The glass fiber cloth is composed of alkali-free glass fibers.

3. The fire-resistant, water-blocking, highly flexible energy storage cable according to claim 1, characterized in that: The silicone rubber is a vapor-phase vulcanized silicone rubber, and the vapor-phase vulcanized silicone rubber includes a heat-resistant agent.

4. The fire-resistant, water-blocking, highly flexible energy storage cable according to claim 3, characterized in that: The gas phase vulcanized silicone rubber also includes a platinum vulcanizing agent.

5. The fire-resistant, water-blocking, highly flexible energy storage cable according to claim 1, characterized in that: The silicone rubber includes a flame retardant, and the oxygen index of the silicone rubber is greater than or equal to 48.

6. The fire-resistant, water-blocking, highly flexible energy storage cable according to claim 1, characterized in that: The braided layer (51) is formed by braiding polyester yarns.

7. The fire-resistant, water-blocking, highly flexible energy storage cable according to claim 6, characterized in that: The braiding density of the braided layer (51) is greater than or equal to 80%.

8. The fire-resistant, water-blocking, highly flexible energy storage cable according to claim 6, characterized in that: The braided layer (51) is a pre-dyed braided layer.

9. The fire-resistant, water-blocking, highly flexible energy storage cable according to any one of claims 1 to 8, characterized in that: The braided layer (51) is dipped in asphalt mixed paint.

10. The fire-resistant, water-blocking, highly flexible energy storage cable according to any one of claims 1 to 8, characterized in that: The material of the outer protective coating (52) is silicone epoxy resin, and the Shore hardness of the silicone epoxy resin is between 28A and 32A.

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