A cold-resistant cable

Abstract

The utility model relates to cable technical field, concretely relates to a kind of cable of cold-proof, the outside of multiple the battery is uniformly wrapped with insulating skin, the outside of the insulating skin is provided with cold-proof mechanism, the cold-proof mechanism is used to improve the cold-proof performance of cable, the inside of the cold-proof mechanism is provided with tensile mechanism, the tensile mechanism is used to promote the tensile performance of cable, the cold-proof mechanism includes rubber filling layer and sheath, the rubber filling layer is wrapped in the outside of multiple insulating skin, the inside of the sheath is fixedly connected with silicon dioxide aerogel, the outside of the rubber filling layer is equidistantly fixedly connected with multiple convergence components, the outside of the rubber filling layer is fixedly connected with mica tape, obtain the effect of cable cold-proof performance, make cable keep stable electrical performance in low temperature environment, avoid the effect of battery low temperature hardening, insulating skin fragile failure.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, and in particular to a cold-resistant cable. Background Technology

[0002] Cables are wire products used to transmit electrical energy, electrical signals, or realize the conversion of electromagnetic energy. They are widely used in power transmission, communication, and construction. Their core function is to realize the long-distance transmission of electrical energy or signals while ensuring stable electrical performance. Depending on the application scenario, they can be divided into power cables, communication cables, control cables, etc.

[0003] In low-temperature environments, cables need to have good cold resistance to avoid problems such as insulation embrittlement and increased conductor resistance caused by excessively low temperatures. However, with the development of new energy and polar scientific research, higher requirements have been placed on the reliability of cables in extreme low-temperature environments. The cold-proof design of traditional cables can no longer meet the needs, and it is urgent to improve their low-temperature adaptability through material innovation and structural optimization.

[0004] Existing cable cold-proof designs in low-temperature environments employ methods such as increasing insulation layer thickness or replacing cold-resistant materials to improve low-temperature adaptability through physical barriers or material properties. Some cables have added rubber sheaths to the outside of the insulation layer, utilizing the elasticity of rubber to alleviate deformation stress at low temperatures and prevent the insulation layer from directly freezing and cracking. However, traditional rubber sheaths gradually harden below -20°C, losing their elastic buffering capacity. When the cable is bent or stretched, the hardened sheath cannot absorb stress, causing the insulation layer to crack due to localized stress concentration. Utility Model Content

[0005] The purpose of this invention is to provide a cold-resistant cable that solves the problem that the insulation layer of the cable cannot absorb stress at extremely low temperatures, leading to cracking due to localized stress concentration.

[0006] To achieve the above objectives, this utility model provides a cold-resistant cable, which includes multiple battery cores and multiple insulation sheaths, as well as a cold-resistant mechanism and a tensile-resistant mechanism.

[0007] The cold-proof mechanism includes a rubber filling layer and a sheath. The rubber filling layer is wrapped around the outside of multiple insulating layers. Silica aerogel is fixedly connected to the inside of the sheath. Multiple gathering components are fixedly connected at equal intervals to the outside of the rubber filling layer. Mica tape is fixedly connected to the outside of the rubber filling layer.

[0008] The tensile mechanism includes an aramid fiber tensile layer and a steel wire rope bearing core. The aramid fiber tensile layer is fixedly connected to the outside of the mica tape, and the steel wire rope bearing core is fixedly connected to the center of the rubber filling layer. A stress buffer rubber layer is provided on the outside of the aramid fiber tensile layer.

[0009] The top-mounted gathering assembly includes a fiber braided tape, which is fixedly connected to the top outer side of the rubber filler layer. The fiber braided tape has an inner arc design, and a heat-shrinkable fluororubber collar is fitted over the outside of the fiber braided tape.

[0010] The stress-buffered adhesive layer includes silicone rubber, which is fixedly connected to the outside of the aramid fiber tensile layer. The outside of the silicone rubber is fixedly connected to the inside of the silica aerogel, and the inside of the silicone rubber is fixedly connected to a Kevlar fiber tape with a grid-like cross design.

[0011] Among them, multiple battery cells and insulating sheets adopt a spiral winding design, and multiple insulating sheets are wound with equal-distance threads on the outside of the wire rope bearing core.

[0012] This utility model discloses a cold-resistant cable that uses a rubber filling layer to fill and buffer the gaps in the insulation, silica aerogel to block low temperatures, and a fiber braided tape and heat-shrinkable fluororubber collar tightly compressed in the coiling assembly. Mica tape reflects and blocks heat, thereby improving the cable's cold-resistant performance. This allows the cable to maintain stable electrical performance in low-temperature environments, avoids low-temperature hardening of the battery core and embrittlement of the insulation, and extends its service life in cold regions. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0014] Figure 1 This is a cross-sectional view of an embodiment of the present utility model.

[0015] Figure 2 This is a front view of an embodiment of the present utility model.

[0016] Figure 3 This is a cross-sectional view of the stress-reducing adhesive layer in an embodiment of this utility model.

[0017] Figure 4 This is a schematic diagram of the structure of the convergence component in an embodiment of this utility model.

[0018] Figure 5 This is a schematic diagram of the structure of the steel wire rope bearing core in an embodiment of this utility model.

[0019] 1-Battery cell, 2-Insulation sheath, 3-Cold protection mechanism, 31-Rubber filling layer, 32-Sheath, 33-Silica aerogel, 34-Tie-up assembly, 341-Fiber braided tape, 342-Heat-shrink fluororubber collar, 35-Mica tape, 4-Tension mechanism, 41-Aramid fiber tensile layer, 42-Steel wire rope load-bearing core, 43-Stress buffer rubber layer, 431-Silicone rubber, 432-Kevlar fiber tape. Detailed Implementation

[0020] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0021] Please see Figure 1 , Figure 2 and Figure 4 An embodiment of this utility model provides: a cold-resistant cable, including multiple battery cores 1, each of the multiple battery cores 1 is wrapped with an insulating sheath 2, a cold-resistant mechanism 3 is provided on the outside of the insulating sheath 2, the cold-resistant mechanism 3 is used to improve the cold-resistant performance of the cable, and a tensile-resistant mechanism 4 is provided inside the cold-resistant mechanism 3, the tensile-resistant mechanism 4 is used to improve the tensile performance of the cable.

[0022] The cold protection mechanism 3 includes a rubber filling layer 31 and a sheath 32. The rubber filling layer 31 is wrapped around the outside of multiple insulating skins 2. Silica aerogel 33 is fixedly connected to the inside of the sheath 32. Multiple gathering components 34 are fixedly connected at equal intervals to the outside of the rubber filling layer 31. The top gathering component 34 includes a fiber braided tape 341, which is fixedly connected to the top of the outside of the rubber filling layer 31. The fiber braided tape 341 adopts an inner arc design. A heat-shrinkable fluororubber collar 342 is sleeved on the outside of the fiber braided tape 341. Mica tape 35 is fixedly connected to the outside of the rubber filling layer 31.

[0023] Specifically, in the cold protection mechanism 3, the rubber filling layer 31 tightly wraps around the outside of multiple insulating skins 2, filling the gaps between the insulating skins 2 and forming a buffer layer. Silica aerogel 33 is fixedly connected to the inside of the sheath 32. This material has an extremely low thermal conductivity and can form a highly efficient heat insulation barrier inside the sheath 32, preventing external low temperatures from being conducted into the cable. Multiple coiling components 34 are equidistantly arranged outside the rubber filling layer 31. The fiber braided tape 341 of the top coiling component 34 is fixed to the top of the outer side of the rubber filling layer 31, and it adopts an inner arc shape. The design conforms to the curved surface of the rubber filler layer 31. An externally fitted heat-shrinkable fluororubber collar 342 shrinks upon heating, tightly pressing the fiber braided tape 341 against the surface of the rubber filler layer 31. This ensures close contact between the rubber filler layer 31 and the insulation 2, preventing thermal bridging due to gaps. Mica tape 35 is wrapped and fixed around the outside of the rubber filler layer 31. Its layered structure hinders heat transfer and provides high-temperature resistance. In low-temperature environments, it enhances insulation and evenly distributes internal heat during cable operation, preventing localized excessively low temperatures. When the cable is in a low-temperature environment, the silica aerogel 33 first blocks the intrusion of external low temperatures. The air layer and rubber material in the rubber filler layer 31 further slow down heat loss. The coiling assembly 34, through the cooperation of the fiber braided tape 341 and the heat-shrinkable fluororubber collar 342, ensures the fit between the rubber filler layer 31 and the insulation 2, and avoids gaps in the cold-proof structure due to vibration or deformation. The mica tape 35 forms a double heat insulation layer on both the inner and outer sides of the cable, reducing heat loss through reflection and blocking. The rubber filler layer 31 fills the gaps and buffers external impacts. The low thermal conductivity of the silica aerogel 33 blocks low temperatures. The fiber braided tape 341 and the heat-shrinkable fluororubber collar 342 of the coiling assembly 34 ensure a tight structure. The mica tape 35 enhances the uniformity of heat insulation and heat dissipation, thereby improving the cable's cold-proof performance. This allows the cable to maintain stable electrical performance in low-temperature environments, avoids failures caused by low-temperature hardening of the battery core 1 or embrittlement of the insulation 2, and extends the cable's service life in cold regions. It is suitable for power transmission scenarios in outdoor cold environments or high-latitude regions.

[0024] Please see Figure 1 , Figure 2 and Figure 3 The tensile mechanism 4 includes an aramid fiber tensile layer 41 and a steel wire rope bearing core 42. The aramid fiber tensile layer 41 is fixedly connected to the outside of the mica tape 35, and the steel wire rope bearing core 42 is fixedly connected to the center inside the rubber filling layer 31. A stress buffer adhesive layer 43 is provided on the outside of the aramid fiber tensile layer 41. The stress buffer adhesive layer 43 includes silicone rubber 431. The silicone rubber 431 is fixedly connected to the outside of the aramid fiber tensile layer 41. The outside of the silicone rubber 431 is fixedly connected to the inside of the silica aerogel 33. A Kevlar fiber tape 432 is fixedly connected to the inside of the silicone rubber 431. The Kevlar fiber tape 432 adopts a grid-like cross design.

[0025] Specifically, in the tensile structure 4, the aramid fiber tensile layer 41 is fixedly connected to the outside of the mica tape 35. Utilizing the high tensile strength of the aramid fiber, it provides basic tensile support for the cable. The steel wire rope bearing core 42 is fixedly connected to the center inside the rubber filling layer 31. Its high-strength metal structure can withstand the main tensile load on the cable. Especially when the cable as a whole is subjected to longitudinal tension, the steel wire rope bearing core 42 directly offsets the external tension through axial force, preventing the cable from being damaged by excessive stretching of the internal battery core 1. Stress buffers are set on the outside of the aramid fiber tensile layer 41. The adhesive layer 43 has a silicone rubber 431 fixedly connected to the outside of the aramid fiber tensile layer 41, and simultaneously fixedly connected to the inside of the silica aerogel 33, forming an elastic buffer structure. Kevlar fiber tape 432 is fixedly connected to the inside of the silicone rubber 431, employing a grid-like cross-design. When the cable is subjected to tensile or bending stress, the grid structure of the Kevlar fiber tape 432 can evenly distribute the stress, avoiding localized stress concentration. The elastic deformation capability of the silicone rubber 431 further absorbs stress fluctuations, reducing the external load on the aramid fiber tensile layer 41 and... The steel wire rope bearing core 42 is directly impacted. When the cable is subjected to longitudinal tension, the steel wire rope bearing core 42 first bears the main load, resisting tension through its own high-strength metal structure. The aramid fiber tensile layer 41 assists in bearing the tensile force; its high tensile strength prevents the outer layer of the cable from breaking due to stress. The Kevlar fiber tape 432 mesh structure of the stress buffer rubber layer 43 disperses concentrated stress to the silicone rubber 431. The elastic deformation of the silicone rubber 431 absorbs stress energy, preventing damage to the aramid fiber tensile layer 41 and the steel wire rope bearing core 42 due to instantaneous overload. The main tensile load is borne by the steel wire rope bearing core 42, the tensile strength is further enhanced by the aramid fiber tensile layer 41, the stress buffer rubber layer 43 has a Kevlar fiber tape 432 mesh structure to disperse stress, and the silicone rubber 431 absorbs stress fluctuations. This achieves the effect of improving the tensile performance of the cable, so that the cable can effectively resist deformation when subjected to external forces such as tension and bending, protect the structural integrity of the internal core 1 and insulation 2, and avoid cable breakage or internal circuit damage due to insufficient tensile performance. It is suitable for installation scenarios that require frequent movement or withstand large tensile forces.

[0026] Please see Figure 5 Multiple battery cells 1 and insulation sheets 2 are all spirally wound, and multiple insulation sheets 2 are wound with equidistant threads on the outside of the wire rope bearing core 42.

[0027] Specifically, when the cable is subjected to external force, the spiral winding structure can disperse stress through deformation to avoid excessive local stress. The steel wire rope bearing core 42 serves as the central support, providing axial support for the spirally wound core 1 and insulation 2, thereby enhancing the overall tensile strength of the cable. This design allows the components to work together to bear the force when the cable is bent or stretched, reducing the relative displacement between the core 1 and the insulation 2, and ensuring the stability of the cable structure and the reliability of its electrical performance.

[0028] Working principle: Multiple battery cores 1 are all wrapped with insulating sheaths 2 to achieve electrical insulation. The multiple insulating sheaths 2 and battery cores 1 are spirally wound with equidistant threads around the steel wire rope bearing core 42 in the center of the rubber filling layer 31. This spiral structure can disperse stress through deformation when the cable is subjected to external force, avoiding excessive local stress. Simultaneously, the steel wire rope bearing core 42 acts as a central support, providing axial support for the spirally wound battery cores 1 and insulating sheaths 2, enhancing the overall tensile strength of the cable. This allows the components to work together to bear force when the cable is bent or stretched, reducing the relative displacement between the battery cores 1 and insulating sheaths 2. In the cold-proof mechanism 3 located outside the insulating sheaths 2, the rubber filling layer 31 tightly wraps around the multiple insulating sheaths 2, filling the gaps between them and forming a buffer layer. The internal air layer and rubber material slow down heat loss. Among the multiple bundled components 34 equidistantly fixed outside the rubber filling layer 31, the fiber braided tape 341 adopts an inner arc design and is fixed to the top of the outer side of the rubber filling layer 31. The heat-shrinkable fluororubber collar 342 on the outside shrinks after heating, pressing the fiber braided tape 341 tightly against the surface of the rubber filling layer 31, so that the rubber filling layer 31 and the insulation skin 2 are in close contact, avoiding the thermal bridging effect caused by gaps. The mica tape 35 fixed outside the rubber filling layer 31 has a layered structure that can hinder heat transfer, enhance the heat insulation effect in low-temperature environments, and evenly distribute internal heat during cable operation to prevent local temperature from being too low. The silica aerogel 33 fixed inside the sheath 32 utilizes an extremely low thermal conductivity. A high-efficiency heat insulation barrier is formed inside the sheath 32 to prevent external low temperatures from being conducted into the cable. When the cable is in a low-temperature environment, the silica aerogel 33 first blocks the intrusion of external low temperatures, the rubber filler layer 31 further slows down heat loss, and the coiling assembly 34 ensures the fit between the rubber filler layer 31 and the insulation 2, preventing gaps in the cold-proof structure due to vibration or deformation. The mica tape 35 forms a double heat insulation layer on both the inner and outer sides of the cable, reducing heat loss through reflection and blocking, thereby improving the cable's cold-proof performance. In the tensile mechanism 4 set inside the cold-proof mechanism 3, the aramid fiber tensile layer 41 is fixedly connected to the outside of the mica tape 35, using the high tensile strength of the aramid fiber to provide basic tensile support for the cable. The stress relief on the outside of the aramid fiber tensile layer 41 is... In the rubber-coated layer 43, silicone rubber 431 is fixedly connected to the outside of the aramid fiber tensile layer 41 and to the inside of the silica aerogel 33, forming an elastic buffer structure. The Kevlar fiber tape 432 fixed inside adopts a grid-like cross design. When the cable is subjected to tensile or bending stress, the grid structure of the Kevlar fiber tape 432 evenly disperses the stress, avoiding local stress concentration. The elastic deformation capacity of silicone rubber 431 absorbs stress fluctuations, reducing the direct impact of external loads on the aramid fiber tensile layer 41 and the steel wire rope bearing core 42. When the cable is subjected to longitudinal tension, the steel wire rope bearing core 42 first bears the main load, resisting tension through its own high-strength metal structure. The aramid fiber tensile layer 41 assists in bearing the tension, preventing the outer layer of the cable from breaking due to stress.The Kevlar fiber tape 432 mesh structure of the stress buffer layer 43 disperses concentrated stress to the silicone rubber 431. The elastic deformation of the silicone rubber 431 absorbs stress energy, preventing damage to the aramid fiber tensile layer 41 and the steel wire rope bearing core 42 due to instantaneous overload, thereby improving the tensile performance of the cable. In practical applications, when the cable is in a low-temperature environment, the multi-layer structure of the cold-proof mechanism 3 works together to block the low temperature, maintain the stability of the internal temperature of the cable, and prevent electrical faults caused by low-temperature hardening of the core 1 or embrittlement of the insulation 2. When the cable is subjected to tension and bending, the tensile mechanism 4 and the spiral winding structure work together to resist deformation and protect the internal structure. Furthermore, the spiral winding structure adapts to thermal expansion and contraction caused by temperature changes during dynamic stress, preventing internal stress accumulation. The coiling component 34 ensures that the cold-proof mechanism 3 maintains a tight structure and insulation effect under dynamic stress. Through the synergistic effect of various mechanisms and structures, this cable maintains stable electrical performance in low-temperature environments. It is suitable for outdoor cold environments, power transmission in high-latitude regions, and installation scenarios requiring frequent movement or withstanding large tensile forces. Compared with traditional cables, its low-temperature resistance is greatly improved, effectively solving the problems of insulation failure and insufficient tensile strength that traditional cables are prone to in cold regions.

[0029] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A cold-resistant cable, comprising multiple battery cores and multiple insulating sheaths, characterized in that, It also includes cold-proofing mechanisms and tensile-strength mechanisms; The cold-proof mechanism includes a rubber filling layer and a sheath. The rubber filling layer is wrapped around the outside of multiple insulating layers. Silica aerogel is fixedly connected to the inside of the sheath. Multiple gathering components are fixedly connected at equal intervals to the outside of the rubber filling layer. Mica tape is fixedly connected to the outside of the rubber filling layer.

2. The cold-resistant cable as described in claim 1, characterized in that, The tensile mechanism includes an aramid fiber tensile layer and a steel wire rope bearing core. The aramid fiber tensile layer is fixedly connected to the outside of the mica tape, and the steel wire rope bearing core is fixedly connected to the center of the inside of the rubber filling layer. A stress buffer rubber layer is provided on the outside of the aramid fiber tensile layer.

3. The cold-resistant cable as described in claim 1, characterized in that, The top-mounted gathering assembly includes a fiber braided tape, which is fixedly connected to the top outer side of the rubber filler layer. The fiber braided tape has an inner arc design, and a heat-shrinkable fluororubber collar is fitted over the outside of the fiber braided tape.

4. The cold-resistant cable as described in claim 2, characterized in that, The stress-relief adhesive layer includes silicone rubber, which is fixedly connected to the outside of the aramid fiber tensile layer. The outside of the silicone rubber is fixedly connected to the inside of the silica aerogel, and the inside of the silicone rubber is fixedly connected to a Kevlar fiber tape with a grid-like cross design.

5. The cold-resistant cable as described in claim 1, characterized in that, The multiple battery cells and insulation sheets all adopt a spiral winding design, and the multiple insulation sheets are all wound with equal-distance threads on the outside of the wire rope bearing core.

Images