CN223815661U - Energy storage cable - Google Patents

Abstract

The utility model provides an energy storage cable, which comprises a 5 th soft copper conductor, wherein the conductor adopts a bundle twisting structure, a bundle wire and a double twisting of the conductor are twisted in the same direction, the outer side of the conductor is sequentially coated with an inner insulation layer and a covering layer from inside to outside, the flexibility of the inner insulation layer is larger than that of the outer insulation layer, and the inner insulation layer is a polyester film adopting a tape wrapping process. The energy storage cable adopts the 5 th soft copper conductor, which is formed by combining and twisting soft round copper wires, further limits the twisting direction of the conductor wire and the twisted wire, can ensure the bending performance and the softness performance of the cable, and is coated with the inner insulation of a polyester film outside the conductor, and the inner insulation can resist high temperature, so as to ensure that the inner insulation is not melted in the extrusion process of a covering layer.

Description

Energy storage cable

Technical Field

The utility model relates to the technical field of cables, in particular to an energy storage cable capable of being used for cleaning new energy.

Background

The development of the wind-electricity photovoltaic industry promotes the development of the large-capacity energy storage industry, wherein an energy storage technology is the core of the new energy industry revolution, the energy storage technology solves the problems of randomness and fluctuation of new energy power generation to a great extent, smooth output of the new energy power generation can be realized, the change of power grid voltage, frequency and phase caused by the new energy power generation can be effectively regulated, and large-scale wind electricity and photovoltaic power generation can be conveniently and reliably integrated into a conventional power grid, wherein an energy storage cable is one of necessary hardware required by the energy storage technology.

However, the existing energy storage cable has the problems that the bending performance and the softness performance of the energy storage cable are poor, the energy storage cable is inconvenient to bend and install, the energy storage cable cannot be suitable for different use scenes, in addition, the conductors are easy to expose after the outer layer of the energy storage cable is damaged, and the safety of the cable is reduced.

In order to solve the problems, the utility model provides an energy storage cable which is convenient to bend and has high safety.

Disclosure of utility model

In order to solve the problems of the existing energy storage cables, the utility model provides the energy storage cable.

According to one object of the utility model, the energy storage cable comprises a 5 th soft copper conductor, wherein the conductor adopts a stranding structure, the wire harness and the compound stranding of the conductor are both stranded in the same direction, the outer side of the conductor is sequentially coated with an inner insulation layer and a covering layer from inside to outside, the flexibility of the inner insulation layer is larger than that of the outer insulation layer, the inner insulation layer is a polyester film adopting a taping process, the covering layer is formed by extrusion, and the melting temperature of the inner insulation layer is higher than that of the covering layer.

Preferably, the wire harness and the compound stranding of the conductor adopt the left-direction same-direction stranding.

Preferably, the covering layer comprises an outer insulator and a sheath which are sequentially coated on the outer side of the inner insulator, and the outer insulator and the sheath are formed by extrusion.

Preferably, the outer insulation and the sheath are made of radiation crosslinked low-smoke halogen-free flame retardant polyolefin materials.

Preferably, the outer insulation and the sheath are made of low-smoke halogen-free flame-retardant heat-resistant 125 ℃ irradiation crosslinked polyolefin materials.

Preferably, the heat resistant temperature of the sheath and the heat resistant temperature of the outer insulation are both not less than 125 °.

Preferably, the inner insulation is a mylar insulation tape wrapped around the outside of the conductor.

Preferably, a waterproof layer is further arranged between the outer insulation and the sheath.

Preferably, the aluminum-plastic composite belt is longitudinally wrapped on the outer side of the outer insulation to form the waterproof layer.

Preferably, the longitudinally-wrapped aluminum-plastic composite belt and the extruded sheath are molded at the same time.

Compared with the prior art, the utility model has the beneficial effects that:

The energy storage cable adopts the 5 th soft copper conductor, which is formed by combining and twisting soft round copper wires, further limits the twisting direction of the conductor wire and the twisted wire, can ensure the bending performance and the softness performance of the cable, and is coated with the inner insulation of a polyester film outside the conductor, and the inner insulation can resist high temperature, so as to ensure that the inner insulation is not melted in the extrusion process of a covering layer.

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings.

Drawings

Fig. 1 is a schematic radial cross-section of an energy storage cable according to the present utility model.

Detailed Description

The following description is presented to enable one of ordinary skill in the art to practice the utility model. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the utility model defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model.

Referring to fig. 1, the utility model provides a technical scheme that an energy storage cable comprises a 5 th soft copper conductor 100, wherein the conductor 100 adopts a bundle twisting structure, a bundle wire and a bundle twisting of the conductor 100 adopt the same-direction twisting, an inner insulation 200 and a covering layer 300 are sequentially coated on the outer side of the conductor 100 from inside to outside, the flexibility of the inner insulation 200 is larger than that of an outer insulation 301, the inner insulation 200 is a polyester film adopting a taping process, the covering layer 300 is an extrusion-molded covering layer 300, and the melting temperature of the inner insulation 200 is higher than that of the covering layer 300.

The energy storage cable adopts the 5 th soft copper conductor 100, which is formed by combining and twisting soft round copper wires, further limits the twisting direction of the conductor 100 wires and the twisted wires, can ensure the bending performance and the softness of the cable, and the inner insulation 200 of the polyester film is coated outside the conductor 100, and the inner insulation 200 can resist high temperature, so as to ensure that the inner insulation 200 is not melted in the extrusion process of the covering layer 300.

The 5 th soft copper conductor is a conductor material widely used in wire and cable manufacture, the 5 th soft copper conductor is a conductor formed by combining and twisting soft round copper wires, and is mainly used in the fields of electric conductors, wires, cables and the like, the 5 th soft copper conductor has soft and flexible characteristics, the whole structure is soft and easy to bend, the complex and changeable wiring requirements can be met, the purity of soft copper is higher, few impurities are contained, the crystal grains are smaller, and therefore the soft copper conductor has good conductivity, and the stability and the efficiency of current transmission are ensured.

Further, both the wire harness and the twisted pair of the conductor 100 are twisted in the same direction in the left direction.

Further, the covering layer 300 includes an outer insulation 301 and a sheath 302 sequentially coated on the outer side of the inner insulation 200, wherein the outer insulation 301 and the sheath 302 are both formed by extrusion, and the extrusion is made by uniformly extruding molten materials on the wires through an extruder, so that a continuous and uniform layered member can be formed, and good electrical and mechanical properties are achieved.

Further, the outer insulation 301 and the sheath 302 are made of radiation crosslinked low-smoke halogen-free flame retardant polyolefin materials. By limiting the materials and the treatment process of the external insulation 301 and the sheath 302, the cable has excellent ultraviolet resistance, cold resistance, heat resistance, chemical corrosion resistance and humidity resistance, high and low temperature resistance and the like, ensures that the cable can stably run for a long time in various environments, and prolongs the service life. Preferably, the outer insulation 301 and the sheath 302 are made of a low smoke halogen-free flame retardant heat resistant 125 ℃ irradiation crosslinked polyolefin material, and further, the heat resistant temperature of the sheath 302 and the heat resistant temperature of the outer insulation 301 are not less than 125 °. Preferably, the heat-resistant temperature of the sheath 302 and the heat-resistant temperature of the outer insulation 301 are both 125 °, that is, the outer insulation 301 and the sheath 302 adopting the irradiation technology have excellent electrical performance and high temperature resistance, and the temperature can reach 125 ℃ in normal operation. It should be noted that irradiation crosslinking is a technique of crosslinking a cable material. The technology utilizes high-energy electron beams or gamma rays to radiate the cable material, so that the molecular structure of the cable material is changed, and the material performance is enhanced. The cable material after radiation treatment has the performances of high temperature resistance, heat aging resistance, chemical corrosion resistance, ultraviolet resistance and the like, and has stronger durability, safety and reliability.

The irradiation crosslinking flame-retardant polyolefin has excellent mechanical and physical properties, good environmental stress cracking resistance, excellent wear resistance and various chemical solvents resistance, and is stable in various surrounding corrosive media. The highest rated temperature of the irradiation crosslinking flame-retardant polyolefin can reach 125 ℃ in long-term working, corrosive gas and toxic gas are not released in combustion, secondary hazard is not generated, the irradiation crosslinking flame-retardant polyolefin meets the modern fire safety requirements, is a novel environment-friendly product, and is beneficial to the use of energy storage cables.

Further, the inner insulation 200 is a mylar insulation tape, which is wrapped around the outside of the conductor 100, and the mylar is resistant to high temperatures, so as to ensure that the mylar is not melted during the extrusion of the cover 300.

Further, a waterproof layer 400 is further disposed between the outer insulation 301 and the sheath 302, and further, an aluminum-plastic composite belt is longitudinally wrapped on the outer side of the outer insulation 301 to form the waterproof layer 400. By additionally arranging the waterproof layer 400, the cable has excellent waterproof performance, moisture can be effectively prevented from penetrating into the cable, the insulating performance and reliability of the cable are improved, and the service life is prolonged. Further, the waterproof layer 400 and the extruded sheath 302 are formed at the same time. Waterproof layer 400 can prevent effectively that moisture from penetrating into the cable inside, improve insulating properties and reliability of cable, can withstand the extreme weather influence that natural environment such as sunshine, rainwater, snow water brought, keep stable electric properties, increase of service life, fashioned waterproof layer 400 and sheath 302 can ensure the close combination between waterproof layer 400 and the sheath 302 simultaneously, reduce gap and the leak that cause because of the mishandling or material difference, thereby improve the waterproof performance of cable, in addition waterproof layer 400 and sheath 302's close combination can also strengthen the whole pliability of cable, improve performances such as stretch-proofing, the anti extrusion of cable.

In conclusion, the energy storage cable has excellent ultraviolet resistance, cold resistance, heat resistance, chemical corrosion resistance and the like, has good moisture resistance, high temperature resistance, low temperature resistance and the like, can effectively prevent moisture from penetrating into the cable, improves the insulation performance and reliability of the cable, is particularly important for the cable used in humid, rainy and high-humidity environments, can withstand extreme weather influences caused by natural environments such as sunlight, rainwater, snow water and the like, maintains stable electrical performance, and prolongs the service life.

The energy storage cable has the following advantages:

1. The 5 th annealed soft copper conductor 100 is adopted as the conductor 100, and meanwhile, the wire harness and the double twisting are stranded in the same direction in the left direction, so that the bending property and the softness of the cable can be ensured, a layer of polyester film insulating tape is wrapped outside the wire, the polyester film is required to be resistant to high temperature, and the melting is prevented in the process of extruding the covering layer 300;

2. The internal insulation 200 adopts a low-smoke halogen-free flame-retardant heat-resistant 125 ℃ irradiation crosslinking polyolefin material, so that the material has excellent electrical property and high temperature resistance, and the temperature can reach 125 ℃ in normal operation;

3. when the sheath 302 is extruded, a layer of aluminum-plastic composite belt is longitudinally coated, so that the cable has excellent waterproof performance, moisture can be effectively prevented from penetrating into the cable, the insulating performance and reliability of the cable are improved, and the service life is prolonged;

4. The sheath 302 adopts a low-smoke halogen-free flame-retardant heat-resistant 125 ℃ irradiation cross-linked polyolefin material, so that the cable has excellent ultraviolet ray resistance, cold resistance, heat resistance, chemical corrosion resistance and humidity resistance, high and low temperature resistance and the like.

The above-described embodiments are only for illustrating the technical spirit and features of the present utility model, and it is intended to enable those skilled in the art to understand the content of the present utility model and to implement it accordingly, and the scope of the present utility model as defined by the present embodiments should not be limited only by the present embodiments, i.e. equivalent changes or modifications made in accordance with the spirit of the present utility model will still fall within the scope of the present utility model.

Claims (10)

1. The utility model provides an energy storage cable, its characterized in that includes 5 th kind soft copper conductor (100), conductor (100) adopt bundle hank structure, the bundle line of conductor (100) and compound hank all adopt the syntropy transposition, the outside of conductor (100) is from interior to cladding in proper order has internal insulation (200) and overburden (300), the pliability of internal insulation (200) is greater than the pliability of external insulation (301), internal insulation (200) are the polyester film that adopts the band technology, overburden (300) are extrusion molding, the fusing temperature of internal insulation (200) is higher than the extrusion temperature of overburden (300).

2. An energy storage cable according to claim 1, wherein the wire harness and the twisted pair of conductors (100) are twisted in the same direction in the left direction.

3. Energy storage cable according to claim 1, characterized in that the cover layer (300) comprises an outer insulation (301) and a sheath (302) which are sequentially coated on the outer side of the inner insulation (200), wherein the outer insulation (301) and the sheath (302) are both extrusion molded.

4. An energy storage cable according to claim 3, characterized in that the outer insulation (301) and the sheath (302) are made of radiation cross-linked low smoke halogen free flame retardant polyolefin material.

5. An energy storage cable according to claim 4, wherein the outer insulation (301) and the sheath (302) are made of a low smoke halogen free flame retardant heat resistant 125 ℃ irradiation cross-linked polyolefin material.

6. An energy storage cable according to claim 4, wherein the sheath (302) has a heat resistant temperature and the outer insulation (301) has a heat resistant temperature of not less than 125 °.

7. Energy storage cable according to claim 1, characterized in that the inner insulation (200) is a mylar insulation tape wrapped around the outside of the conductor (100).

8. An energy storage cable according to claim 3, characterized in that a waterproof layer (400) is further provided between the outer insulation (301) and the sheath (302).

9. An energy storage cable according to claim 8, wherein an aluminium-plastic composite tape is longitudinally wrapped around the outside of the outer insulation (301) to form the waterproof layer (400).

10. An energy storage cable according to claim 9, wherein the longitudinally wrapped aluminium-plastic composite tape and the extruded sheath (302) are molded simultaneously.