Energy storage cable

Abstract

The utility model provides an energy storage cable, which comprises a cable protection sleeve and a cable core, the cable protection sleeve is composed of an outer protection layer, a fireproof layer, a heat-resistant layer and an inner protection layer, a compression-resistant mechanism is arranged in the inner protection layer, the cable core is located in the compression-resistant mechanism, and the cable core is composed of an outer sheath, an inner sheath and a wire core. The cable protection sleeve is adopted to protect the cable core, the cable protection sleeve composed of the outer protection layer, the fireproof layer, the heat-resistant layer and the inner protection layer can effectively achieve the insulation, fireproof and heat-resistant performance, the external protection performance can be achieved in the use process, supporting protection of the cable core is achieved through the compression-resistant mechanism, and the service life of the cable core is prolonged. According to the energy storage cable, the high-efficiency insulating performance can be achieved, meanwhile, the compression resistance and tensile performance of the energy storage cable can be effectively improved, the cable is prevented from being damaged due to extrusion and pulling in the using process, the cable core is protected, the cable core can still operate stably under the complex condition, and the service life of the energy storage cable is prolonged.

Description

Technical Field

[0001] The utility model relates to an energy storage cable. Background Art

[0002] An energy storage cable is a cable dedicated to an energy storage system, mainly used for energy storage, transfer, and distribution in new energy power generation systems such as solar energy, wind energy, geothermal energy, and water energy. The energy storage cable is connected to the DC side between battery clusters and between battery clusters and inverters, and is an indispensable part of the energy storage system. It can effectively store the clean energy generated by unconventional new energy power generation and provide a stable, efficient, and green supply for the energy needs of modern life and industries. According to factors such as insulating materials and usage environments, energy storage cables can be divided into various types, and different types of cables have different characteristics and application scopes. For example, insulated power cables have high heat resistance and electrical properties and are suitable for energy storage systems with high temperatures and high voltages; while rubber-sheathed power cables have good flexibility, oil resistance, and acid and alkali resistance and are suitable for energy storage systems of mobile devices or outdoor environments. With the rapid development of the power energy storage industry, the market demand for energy storage cables is continuously increasing, and energy storage cables are widely used in occasions such as electric vehicles and energy storage power stations. At the same time, with the continuous progress of technology and the continuous reduction of costs, the application fields of energy storage cables will be further expanded.

[0003] An energy storage cable refers to a high-performance cable used in an energy storage system of a power system. Due to high usage requirements, the energy storage cable needs to have good insulation, high-temperature resistance, etc. to ensure its stability during power transmission. However, during the use of the energy storage cable, it may be damaged due to being pulled and squeezed, etc., and it is likely to be damaged after long-term use, making it difficult to stably use the energy storage cable in a complex environment and reducing the performance of the energy storage cable. Summary of the Utility Model

[0004] The utility model provides an energy storage cable to solve the technical problem of poor performance of the energy storage cable.

[0005] The utility model solves the above technical problems through the following technical solutions:

[0006] The utility model provides an energy storage cable, including:

[0007] A cable protective sleeve, which is composed of an outer protective layer, a fireproof layer, a heat-resistant layer, and an inner protective layer. The outer protective layer, the fireproof layer, the heat-resistant layer, and the inner protective layer are sleeved and fixed in sequence, and a compression-resistant mechanism is arranged inside the inner protective layer;

[0008] The cable core is located inside the compression-resistant mechanism. The cable core is composed of an outer sheath, an inner sheath, and a conductor core. The surface of the conductor core is fixedly sleeved with the inner sheath, and the inner sheath is fixedly sleeved inside the outer sheath.

[0009] In this technical solution, the outer protective layer covers the surface of the fireproof layer. The thickness of the outer protective layer is greater than that of the fireproof layer. The fireproof layer is formed by winding metal strips.

[0010] In this technical solution, the thickness of the fireproof layer is 0.5 - 1 mm. The fireproof layer is composed of one of iron and aluminum materials. The metal strips of the fireproof layer form an angle of 15° - 30° with the axial direction of the cable.

[0011] In this technical solution, a protective layer is wound around the surface of the heat-resistant layer. The heat-resistant layer is composed of ceramic fiber filaments. The heat-resistant layer is wound and covered on the surface of the inner protective layer through ceramic fiber filaments.

[0012] In this technical solution, the outer protective layer and the inner protective layer are made of the same material and have the same thickness. The thickness of the inner protective layer is greater than that of the heat-resistant layer, and the thickness of the heat-resistant layer is greater than that of the fireproof layer.

[0013] In this technical solution, the compression-resistant mechanism is composed of a compression-resistant layer and an insulating layer. The compression-resistant layer is fixedly connected to the inner wall of the inner protective layer. The compression-resistant layer is distributed in an arc-shaped zigzag structure. The inside of the compression-resistant layer is filled with an insulating layer, and three evenly distributed gaps are formed between the compression-resistant layer and the inner protective layer.

[0014] In this technical solution, the outer surface of the compression-resistant layer is fixedly connected to the inner protective layer through a number of evenly distributed partition strips. The compression-resistant layer and the partition strips are both made of rubber. Each partition strip is located inside the gap. The partition strips located inside the gap are all penetrated and connected by nylon ropes.

[0015] In this technical solution, the gap formed between the outer protective layer and the compression-resistant layer is filled with an asbestos filling layer, and the asbestos filling layer is evenly distributed between the partition strips.

[0016] In this technical solution, the number of cable cores is three. The three cable cores are all located inside the insulating layer, and an interval is formed between adjacent cable cores.

[0017] In this technical solution, the outer sheath and the inner sheath have the same thickness. The outer sheath is made of hard rubber, and the inner sheath is made of soft rubber. The inner sheath is tightly arranged between the conductor core and the outer sheath.

[0018] On the basis of conforming to the common knowledge in the field, the above preferred conditions can be combined arbitrarily to obtain various preferred examples of the present utility model.

[0019] The positive and progressive effects of the present utility model are as follows:

[0020] For a proposed energy storage cable above, a cable protection sleeve is used to protect the cable core. The cable protection sleeve composed of an outer protective layer, a fireproof layer, a heat-resistant layer, and an inner protective layer can effectively provide insulation, fireproof, and heat-resistant properties, and can provide external protection performance during use. And through a compressive mechanism, the support and protection of the cable core are realized. When in use, while having high insulation performance, it can effectively improve the compressive and tensile properties of the energy storage cable, so that the cable will not be damaged due to extrusion and pulling during use, and can effectively protect the cable core, enabling the cable core to still ensure stable operation in complex situations, improving the use performance of the energy storage cable and extending the service life of the energy storage cable. Description of the Drawings

[0021] Figure 1 It is a schematic three-dimensional structure diagram of the whole of the present utility model.

[0022] Figure 2 It is a schematic side view structure diagram of the present utility model.

[0023] Figure 3 It is a schematic front view structure diagram of the interior of the present utility model.

[0024] Figure 4 It is a schematic front view structure diagram of the exterior of the present utility model.

[0025] Description of the Reference Numerals

[0026] 1. Outer protective layer; 2. Fireproof layer; 3. Heat-resistant layer; 4. Inner protective layer; 5. Compressive layer; 6. Partition strip; 7. Nylon rope; 8. Asbestos filling layer; 9. Insulating layer; 10. Outer sheath; 11. Inner sheath; 12. Core wire. Detailed Embodiment

[0027] The present utility model will be further described below by way of examples, but the present utility model is not limited to the scope of the described examples for this reason.

[0028] As Figures 1-4 shown, the energy storage cable includes:

[0029] A cable protection sleeve, which is composed of an outer protective layer 1, a fireproof layer 2, a heat-resistant layer 3, and an inner protective layer 4. The outer protective layer 1, the fireproof layer 2, the heat-resistant layer 3, and the inner protective layer 4 are sleeved and fixed in sequence, and a compressive mechanism is provided inside the inner protective layer 4;

[0030] The cable core is located inside the compression-resistant mechanism. The cable core is composed of an outer sheath 10, an inner sheath 11, and a conductor core 12. The surface of the conductor core 12 is sleeved and fixed with the inner sheath 11, and the inner sheath 11 is sleeved and fixed inside the outer sheath 10.

[0031] In this technical solution, the outer protective layer 1 is wrapped around the surface of the fireproof layer 2. The thickness of the outer protective layer 1 is greater than that of the fireproof layer 2. The fireproof layer 2 is formed by winding metal strips. The outer protective layer 1 is used to protect the outer surface of the energy storage cable, so that even if multiple cables are in contact with each other, excessive wear problems will not occur.

[0032] In this technical solution, the thickness of the fireproof layer 2 is 0.5 - 1 mm. The fireproof layer 2 is composed of one of iron and aluminum materials, and the metal strips of the fireproof layer 2 form an angle of 15° - 30° with the axial direction of the cable. The fireproof layer 2 is used to provide flame retardant performance and cooperate with the heat-resistant layer 3 to prevent the cable from catching fire inside.

[0033] In this technical solution, a protective layer is wound around the surface of the heat-resistant layer 3. The heat-resistant layer 3 is composed of ceramic fiber filaments. The heat-resistant layer 3 is wound and coated on the surface of the inner protective layer 4 through ceramic fiber filaments. The heat-resistant layer 3 can effectively isolate heat transfer, so that the cable is not affected by the external environment during use.

[0034] In this technical solution, the outer protective layer 1 and the inner protective layer 4 are made of the same material and have the same thickness. The thickness of the inner protective layer 4 is greater than that of the heat-resistant layer 3, and the thickness of the heat-resistant layer 3 is greater than that of the fireproof layer 2. The inner protective layer 4 can further improve the protection performance of the cable core.

[0035] In this technical solution, the compression-resistant mechanism includes a compression-resistant layer 5 and an insulating layer 9. The compression-resistant layer 5 is fixedly connected to the inner wall of the inner protective layer 4. The compression-resistant layer 5 is distributed in an arc-shaped zigzag structure. The inside of the compression-resistant layer 5 is filled with the insulating layer 9, and three evenly distributed gaps are formed between the compression-resistant layer 5 and the inner protective layer 4. The compression-resistant layer 5 can provide support for the cable core, so that even if the outside of the cable is squeezed, it will not affect the cable core, and can ensure the insulation performance between the cable cores.

[0036] In this technical solution, the outer surface of the compression-resistant layer 5 is fixedly connected to the inner protective layer 4 through a number of evenly distributed partition strips 6. The compression-resistant layer 5 and the partition strips 6 are both made of rubber. Each partition strip 6 is located inside the gap. The partition strips 6 located inside the gap are all penetrated and connected with a nylon rope 7. The partition strips 6 can further provide support performance. At the same time, the nylon rope 7 arranged between the partition strips 6 can improve the tensile performance of the cable. Even after the cable is cut, it will not affect the tensile performance of the cable, improving the service performance.

[0037] In this technical solution, the gap formed between the outer protective layer 1 and the compressive layer 5 is filled with an asbestos filling layer 8, and the asbestos filling layer 8 is evenly distributed between the partition strips 6. The asbestos filling layer 8 can further improve the flame retardant performance and ensure that the interior of the cable is densely filled.

[0038] In this technical solution, the number of the cable cores is three. All three cable cores are located inside the insulating layer 9, and there is a gap formed between adjacent cable cores. The cable cores can wrap the wire core 12 and play a role in protecting the wire core 12.

[0039] In this technical solution, the outer sheath 10 and the inner sheath 11 have the same thickness. The outer sheath 10 is composed of hard rubber, and the inner sheath 11 is composed of soft rubber. The inner sheath 11 is tightly arranged between the wire core 12 and the outer sheath 10. The outer sheath 10 plays a role in protecting the inner sheath 11, and the inner sheath 11 squeezes the wire core 12 through its deformation performance to ensure dense filling and play a waterproof role.

[0040] The present utility model is not limited to the above embodiments. No matter what changes are made in its shape or structure, they all fall within the protection scope of the present utility model. The protection scope of the present utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and essence of the present utility model, but these changes and modifications all fall within the protection scope of the present utility model.

Claims

1. An energy storage cable, characterized in that: include: A cable protective sleeve, the cable protective sleeve comprising an outer protective layer (1), a fireproof layer (2), a heat-resistant layer (3) and an inner protective layer (4), the outer protective layer (1), the fireproof layer (2), the heat-resistant layer (3) and the inner protective layer (4) being sleeved and fixed in sequence, and a pressure-resistant mechanism being arranged inside the inner protective layer (4); A cable core, the cable core is located inside a pressure-resistant structure, the cable core is composed of an outer sheath (10), an inner sheath (11) and a wire core (12), the inner sheath (11) is sleeved and fixed on the surface of the wire core (12), and the inner sheath (11) is sleeved and fixed inside the outer sheath (10).

2. The energy storage cable according to claim 1, characterized in that: The outer protective layer (1) is coated on the surface of the fireproof layer (2); the thickness of the outer protective layer (1) is greater than the thickness of the fireproof layer (2); and the fireproof layer (2) is formed by winding a metal strip.

3. The energy storage cable according to claim 2, characterized in that: The thickness of the fireproof layer (2) is 0.5-1 mm, the fireproof layer (2) is made of one of iron and aluminum materials, and the angle between the metal strip of the fireproof layer (2) and the cable axis is 15°-30°.

4. The energy storage cable according to claim 1, characterized in that: A protective layer is wound on the surface of the heat-resistant layer (3), the heat-resistant layer (3) is composed of ceramic fiber threads, and the heat-resistant layer (3) is wrapped around the surface of the inner protective layer (4) by winding the ceramic fiber threads.

5. The energy storage cable according to claim 1, characterized in that: The outer protective layer (1) and the inner protective layer (4) are made of the same material and have the same thickness; the thickness of the inner protective layer (4) is greater than the thickness of the heat-resistant layer (3); and the thickness of the heat-resistant layer (3) is greater than the thickness of the fireproof layer (2).

6. The energy storage cable according to claim 1, characterized in that: The pressure-resistant structure comprises a pressure-resistant layer (5) and an insulating layer (9); the pressure-resistant layer (5) is fixedly connected to the inner wall of the inner protective layer (4); the pressure-resistant layer (5) is distributed in an arc-shaped herringbone structure; the interior of the pressure-resistant layer (5) is filled with an insulating layer (9); and three evenly distributed gaps are formed between the pressure-resistant layer (5) and the inner protective layer (4).

7. The energy storage cable according to claim 6, characterized in that: The outer surface of the pressure-resistant layer (5) is fixedly connected to the inner protective layer (4) via a plurality of evenly distributed spacers (6); the pressure-resistant layer (5) and the spacers (6) are both made of rubber material; each of the spacers (6) is located inside the gap; and the spacers (6) located inside the gap are all connected to the nylon rope (7) through the spacers.

8. The energy storage cable according to claim 6, characterized in that: The gap formed between the outer protective layer (1) and the pressure-resistant layer (5) is filled with an asbestos filling layer (8), and the asbestos filling layer (8) is evenly distributed between the spacers (6).

9. The energy storage cable according to claim 1, characterized in that: The number of the cable cores is three, and the three cable cores are all located inside the insulating layer (9), with intervals formed between adjacent cable cores.

10. The energy storage cable according to claim 1, characterized in that: The outer sheath (10) and the inner sheath (11) have the same thickness, the outer sheath (10) is made of hard rubber, the inner sheath (11) is made of soft rubber, and the inner sheath (11) is tightly arranged between the wire core (12) and the outer sheath (10).

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