Energy storage cable with high tensile strength

Abstract

The utility model discloses a kind of energy storage cables of high tensile strength, including inner layer, outer layer is equipped with outside the inner layer, support strip, four are set with quantity, and be connected in the periphery of the outer layer in cross shape, filling layer is set between every two adjacent support strip, cable conductor, is inserted in the inside of the filling layer, and is divided into four strands, respectively between every two adjacent support strip, outer skin layer, it is equipped outside the filling layer, wherein, the inner layer inside is further provided with tensile component.The utility model first carries out tensile protection to cable conductor by outer layer and support strip, when external force is larger, flowing layer can be subjected to tension, instant hardening, tension is dispersed to the cross section of entire energy storage cable, from inside to outside synergic tensile, to carry out good tensile protection to cable conductor, so that it does not break due to the pulling of external force, can always stably put into use.

Description

Technical Field

[0001] This utility model specifically relates to a high tensile strength energy storage cable. Background Technology

[0002] Energy storage cables are cables used in new energy power generation systems such as solar, wind, geothermal, and hydropower for energy storage, transfer, and distribution. They include battery packs, energy storage inverters, AC boundary points, substations, and other related equipment. They are DC-side cables used in power energy storage systems to connect battery modules, battery clusters, combiner boxes, energy storage converters, and other core components. They are key components for the efficient operation of energy storage systems, effectively storing clean energy from unconventional new energy power generation to provide a stable, efficient, and green supply for the energy needs of modern life and industry.

[0003] However, current energy storage cables do not have good tensile strength and cannot provide tensile protection for the internal cable conductors. When external force stretches the energy storage cable, the cable conductors are easily broken due to the tension, making it unusable.

[0004] Therefore, it is necessary to invent a high tensile strength energy storage cable to solve the above problems. Utility Model Content

[0005] (a) Purpose of the utility model

[0006] To address the technical problems existing in the background art, this utility model proposes a high tensile strength energy storage cable. The cable conductor is first protected against tension by the outer layer and support strip. When the external force is large, the flow layer will be subjected to tension and harden instantly, distributing the tension to the entire cross-section of the energy storage cable. The tension is resisted from the inside out, thus providing good tensile protection for the cable conductor, preventing it from breaking due to external pulling force, and ensuring stable use at all times.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a high tensile strength energy storage cable, comprising an inner layer, wherein an outer layer is sleeved on the outside of the inner layer;

[0009] There are four support bars, which are connected in a cross shape around the outer layer. A filling layer is provided between every two adjacent support bars.

[0010] The cable conductor is inserted inside the filler layer and is divided into four strands, each located between every two adjacent support bars;

[0011] The outer skin layer is fitted over the outside of the filling layer;

[0012] The inner layer also contains tensile components.

[0013] Preferably, the tensile component includes a plurality of partitions connected to the inner wall of the inner layer, and a flow layer filling between any two adjacent partitions.

[0014] Preferably, the inner layer is a silicone layer, the partition is also a silicone layer, and the flow layer is a shear-thickening fluid layer.

[0015] Preferably, the outer layer is an aramid layer, and the support strip is also an aramid layer.

[0016] Preferably, the filling layer is an asbestos layer.

[0017] Preferably, the outer skin layer includes, from the inside out, a flame-retardant layer and a wear-resistant layer sleeved on the outside of the flame-retardant layer.

[0018] Preferably, the flame retardant layer is a halogen-free, low-smoke flame-retardant polyolefin layer, and the wear-resistant layer is an alumina ceramic layer.

[0019] Preferably, the cable conductor is further wrapped with a protective layer, which includes, from the inside out, a shielding layer sleeved on the outside of the cable conductor, an insulating layer sleeved on the outside of the shielding layer, and an integrated insulating and shielding layer sleeved on the outside of the insulating layer.

[0020] Preferably, the shielding layer is a galvanized round copper wire braided layer, the insulation layer is a cross-linked polyethylene layer, and the integrated insulation and shielding layer is a semi-conductive polyolefin layer.

[0021] Compared with the prior art, the beneficial effects of the above-mentioned technical solution of this utility model are:

[0022] This invention, by incorporating an outer layer, support strips, and tensile components, ensures that when the energy storage cable is stretched, it does not merely rely on traditional rigid support. Instead, the outer layer and support strips, made of aramid fibers, first provide tensile protection for the cable conductor. When the external force is large and the outer layer and support strips are insufficient to protect the cable conductor, the inner flow layer is subjected to tensile force. Under the inherent properties of the shear-thickening fluid layer, the flow layer hardens instantaneously, distributing the tensile force across the entire cross-section of the energy storage cable. This coordinated tensile protection from the inside out effectively protects the cable conductor from breakage due to external forces, ensuring stable operation. Furthermore, the outer layer and support strips made of aramid fibers, as well as the flow layer made of shear-thickening fluid, possess good flexibility during normal use, meeting the application requirements of the energy storage cable in various scenarios and facilitating its use. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a cross-sectional view of the present invention;

[0025] Figure 3 This is a schematic diagram of the tensile component of this utility model;

[0026] Figure 4 This is a schematic diagram of the protective layer structure of this utility model;

[0027] Figure 5 This is a perspective view of the present invention.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1 Inner layer, 2 Outer layer, 3 Supporting strip, 4 Filling layer, 5 Cable conductor, 6 Outer sheath, 61 Flame retardant layer, 62 Wear-resistant layer;

[0030] 7. Tensile components, 71. Partitions, 72. Flow layers;

[0031] 8. Protective layer, 81. Shielding layer, 82. Insulation layer, 83. Integrated insulation and shielding layer. Detailed Implementation

[0032] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0033] This utility model provides, for example Figure 1-5 The high tensile strength energy storage cable shown includes an inner layer 1, and an outer layer 2 is sleeved on the outside of the inner layer 1;

[0034] There are four support bars 3, which are connected in a cross shape around the outer layer 2. A filling layer 4 is provided between every two adjacent support bars 3.

[0035] The cable conductor 5 is inserted inside the filling layer 4 and is divided into four strands, which are located between every two adjacent support bars 3.

[0036] The outer skin layer 6 is fitted over the outside of the filling layer 4;

[0037] The inner layer 1 is further provided with a tensile component 7, which includes a plurality of partitions 71 connected to the inner wall of the inner layer 1, and a flow layer 72 filled between any two adjacent partitions 71.

[0038] In one embodiment, the inner layer 1 is a silicone layer, and the partition 71 is also a silicone layer, so that the inner layer 1 has excellent insulation properties and high flexibility, which can be used to store the flow layer 72. The flow layer 72 is a shear-thickening fluid layer, which maintains a low viscosity under static conditions, can be filled in the silicone layer, and is divided into segments by the partition 71. When subjected to tensile or shear force, the flow viscosity will increase sharply and solidify instantly, thereby improving the tensile strength of the cable conductor 5.

[0039] In one embodiment, the outer layer 2 is an aramid layer, and the support strip 3 is also an aramid layer. The aramid layer exists in the form of multi-strand fiber weaving or winding, which makes the outer layer 2 and the support strip 3 have high strength, which can support the filling layer 4. The high strength of the aramid layer also has good tensile properties, which provides tensile protection for the cable conductor 5. The aramid layer also has excellent fatigue resistance, which can be used inside the outer sheath 6 for a long time.

[0040] In one embodiment, the filling layer 4 is an asbestos layer, which has high temperature resistance, ensuring that the inner layer 6 will not be damaged by the heat generated by the cable conductor 5 during use, and providing additional insulation protection to improve the operating environment of the cable conductor 5.

[0041] In one embodiment, the outer sheath 6 comprises, from the inside out, a flame-retardant layer 61 and a wear-resistant layer 62 disposed on the outside of the flame-retardant layer 61. The flame-retardant layer 61 is a halogen-free, low-smoke flame-retardant polyolefin layer, which gives the outer sheath 6 good flame-retardant properties, thereby providing flame-retardant protection for the cable conductor 5. Moreover, when the fire is large, the halogen-free material burns with low smoke and is non-toxic, which is environmentally friendly. The wear-resistant layer is an alumina ceramic layer, which has stable chemical properties and strong wear resistance, and can protect the outer sheath 6 from damage due to friction, thereby improving the service life of the outer sheath 6.

[0042] In one embodiment, the protective layer 8 comprises, from the inside out: a shielding layer 81 sleeved on the outside of the cable conductor 5, an insulation layer 82 sleeved on the outside of the shielding layer 81, and an integrated insulation and shielding layer 83 sleeved on the outside of the insulation layer 82. The shielding layer 81 is a galvanized round copper wire braided layer, which improves the electric field distribution on the surface of the cable conductor 5 and prevents partial discharge due to uneven stranding or air gaps. The insulation layer 82 is a cross-linked polyethylene layer, which has good heat resistance and high insulation resistance, and can provide electrical insulation for the cable conductor 5, ensuring that the current is transmitted only along the cable conductor 5 and preventing leakage. The integrated insulation and shielding layer 83 is a semi-conductive polyolefin layer, which can optimize the electric field distribution of the cable conductor 5, prevent partial discharge, and work together with the galvanized round copper wire braided layer and the cross-linked polyethylene layer to protect the cable conductor 5 and ensure that the cable conductor 5 can operate stably for a long time.

[0043] The specific implementation method is as follows: When this utility model is used, by setting an outer layer 2 and a support strip 3 made of aramid layer, the energy storage cable has good tensile strength by utilizing the excellent strength of aramid itself. In addition, aramid exists in the form of multi-strand fiber weaving or winding, and its fibers have relative sliding and deformation properties, so that the outer layer 2 and the support strip 3 also have a certain degree of flexibility. This allows the energy storage cable to obtain tensile strength while being able to be bent at will to meet the needs of different usage scenarios, with good flexibility.

[0044] Furthermore, through the inner layer 1 and the partition 71 made of silicone layer, the flow layer 72 made of shear thickening fluid layer can be filled inside the inner layer 1. When the energy storage cable is in normal use, without external pulling force, the flow layer 72 made of shear thickening fluid layer is in liquid form inside the inner layer 1, which does not affect the flexibility of the energy storage cable. At the same time, the inner layer 1 and the partition 71 can seal the flow layer 72, so that it will not leak inside the inner layer 1. When the energy storage cable is pulled by a large external force, that is, when the support bar 3 and the outer layer 2 reach the tensile limit, the inner layer 1 will transfer the tensile force to the flow layer 72. At this time, due to the inherent properties of the shear thickening fluid layer, the flow layer 72 will harden instantly, dispersing the tensile force on the energy storage cable to the entire cross section of the energy storage cable. This makes the energy storage cable resist tensile force from the inside to the outside, with high tensile strength, and can provide good tensile protection for the internal cable conductor 5, so that it will not break due to external pulling force, and can always be put into stable use.

[0045] This embodiment specifically solves the problem that current energy storage cables in the prior art do not have good tensile strength and cannot provide tensile protection for the internal cable conductor 5. When the energy storage cable is stretched by external force, the cable conductor 5 is easily broken due to the force and cannot continue to be used.

[0046] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used above are only some embodiments recorded in this utility model. Obviously, those skilled in the art can obtain other drawings based on these drawings.

[0047] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high tensile strength energy storage cable, characterized in that: include: Inner layer (1), and an outer layer (2) is sleeved on the outside of the inner layer (1); There are four support bars (3) and they are connected in a cross shape around the outer layer (2). A filling layer (4) is provided between every two adjacent support bars (3). The cable conductor (5) is inserted inside the filling layer (4) and is divided into four strands, which are located between every two adjacent support bars (3); The outer skin layer (6) is fitted over the outside of the filling layer (4); The inner layer (1) is also provided with a tensile component (7).

2. The high tensile strength energy storage cable according to claim 1, characterized in that: The tensile component (7) includes a plurality of partitions (71) connected to the inner wall of the inner layer (1) and a flow layer (72) filled between any two adjacent partitions (71).

3. The high tensile strength energy storage cable according to claim 2, characterized in that: The inner layer (1) is a silicone layer, the partition (71) is also a silicone layer, and the flow layer (72) is a shear-thickening fluid layer.

4. The high tensile strength energy storage cable according to claim 1, characterized in that: The outer layer (2) is configured as an aramid layer, and the support strip (3) is also configured as an aramid layer.

5. The high tensile strength energy storage cable according to claim 1, characterized in that: The filling layer (4) is set as an asbestos layer.

6. The high tensile strength energy storage cable according to claim 1, characterized in that: The outer skin layer (6) includes, from the inside out, a flame-retardant layer (61) and a wear-resistant layer (62) sleeved on the outside of the flame-retardant layer (61).

7. The high tensile strength energy storage cable according to claim 6, characterized in that: The flame retardant layer (61) is a halogen-free, low-smoke flame retardant polyolefin layer, and the wear-resistant layer (62) is an alumina ceramic layer.

8. The high tensile strength energy storage cable according to claim 1, characterized in that: The cable conductor (5) is also wrapped with a protective layer (8). The protective layer (8) includes, from the inside to the outside, a shielding layer (81) sleeved on the outside of the cable conductor (5), an insulation layer (82) sleeved on the outside of the shielding layer (81), and an integrated insulation and shielding layer (83) sleeved on the outside of the insulation layer (82).

9. A high tensile strength energy storage cable according to claim 8, characterized in that: The shielding layer (81) is a galvanized round copper wire braided layer, the insulation layer (82) is a cross-linked polyethylene layer, and the integrated insulation and shielding layer (83) is a semi-conductive polyolefin layer.

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