CN215527327U - Liquid cooling type large-current charging cable for new energy storage - Google Patents
Liquid cooling type large-current charging cable for new energy storage Download PDFInfo
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- CN215527327U CN215527327U CN202122219519.7U CN202122219519U CN215527327U CN 215527327 U CN215527327 U CN 215527327U CN 202122219519 U CN202122219519 U CN 202122219519U CN 215527327 U CN215527327 U CN 215527327U
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Abstract
The utility model provides a liquid-cooled large-current charging cable for new energy storage, which is characterized in that: the cable comprises a control cable core and a liquid-cooled coaxial cable core, wherein the plurality of control cable cores and the liquid-cooled coaxial cable core are twisted into the cable core, a polypropylene-based halogen-free low-smoke filler is filled in the gap of the cable core, a halogen-free low-smoke environment-friendly polyolefin inner sheath is extruded outside the cable core, a soft copper-clad aluminum alloy wire braided shielding layer is wound outside the halogen-free low-smoke environment-friendly polyolefin inner sheath, and an irradiation cross-linked high-temperature-resistant corrosion-resistant environment-friendly polyolefin outer sheath is extruded outside the outermost layer; the utility model solves the problems that the existing new energy storage charging cable is easy to cause safety accidents such as fire and the like due to the fact that the temperature of the cable is increased and even overheated when the cable is charged by heavy current; the weight of the cable is reduced while the charging cable is guaranteed to resist high temperature, corrosion and vibration and continuously and stably work, and the cost is saved; has good economical efficiency and practicability.
Description
Technical Field
The utility model relates to the field of wires and cables, in particular to a liquid-cooled high-current charging cable for new energy storage.
Background
With the vigorous development of new energy fields in China, matched energy storage facilities become more and more important; the charging cable is used as a basic component of the current carrying capacity of the whole system, and a high-voltage and high-current working mode is generally adopted, so that high requirements are provided for the safety performance of the charging cable;
at present, a charging cable for storing new energy does not have a unified standard, and a common electric equipment cable or power cable is mostly adopted; the new energy system is in a severe environment, has high energy density and narrow and small space, and environmental factors such as high temperature, vibration and strong corrosion affect the heat transfer effect between the charging cable and the outside, so that the temperature of the cable rises even is overheated when the cable is charged by heavy current, continuous use is affected, and safety accidents such as fire disasters are easily caused.
The above problems are to be improved.
SUMMERY OF THE UTILITY MODEL
The utility model provides a liquid-cooling type high-current charging cable for new energy storage, aiming at solving the existing problems, the heat transfer of the charging cable is cut in, and the problems that the existing new energy storage charging cable is easy to cause safety accidents such as fire disasters and the like due to the fact that the temperature of the cable is increased and even overheated when the high current is charged are solved; the weight of the cable is reduced while the charging cable is guaranteed to be high-temperature resistant, corrosion resistant, vibration resistant and continuously and stably operated, the cost is saved, and the charging cable has good economical efficiency and practicability.
The utility model relates to a liquid-cooled large-current charging cable for new energy storage, which comprises a control wire cable core and a liquid-cooled coaxial cable core, wherein a plurality of control wire cable cores and the liquid-cooled coaxial cable core are twisted into the cable core, a polypropylene-based halogen-free low-smoke filler is filled in the gap of the cable core, a halogen-free low-smoke environment-friendly polyolefin inner sheath is extruded outside the cable core, a soft copper-clad aluminum alloy wire braided shielding layer is wound outside the halogen-free low-smoke environment-friendly polyolefin inner sheath, and an irradiation cross-linked high-temperature-resistant corrosion-resistant environment-friendly polyolefin outer sheath is extruded on the outermost layer; the control cable core is formed by twisting a plurality of insulated wire cores and then extruding and wrapping an environment-friendly polyvinyl chloride protective layer; the insulated wire core is composed of a copper-clad aluminum alloy conductor and a first crosslinked polyethylene insulating layer extruded outside the copper-clad aluminum alloy conductor; the liquid-cooled coaxial cable core is composed of a liquid-cooled hollow silica gel tube, a soft copper-clad aluminum alloy woven coaxial conductor wound outside the liquid-cooled hollow silica gel tube, and a second crosslinked polyethylene insulating layer extruded outside the soft copper-clad aluminum alloy woven coaxial conductor.
The copper-clad aluminum alloy conductor is further improved, and is formed by stranding a plurality of soft copper-clad aluminum alloy monofilaments with the diameter not more than 0.21mm, the thinnest point of the copper layer in each soft copper-clad aluminum alloy monofilament is not less than 4% of the wire diameter of each monofilament, and the volume ratio of the copper layer is not less than 19% and not more than 22%; the direct current resistivity of the soft copper-clad aluminum alloy monofilament at 20 ℃ is not more than 0.25416 omega mm2And/m, thereby forming a high-efficiency protective layer and electric conductivity and ensuring the flexibility and shock resistance of the conductor.
Further improved, the wall thickness of the liquid cooling hollow silicone tube is 0.6 mm-1.2 mm, and the withstand voltage is not lower than 12 kpa; the temperature of the refrigerant in the liquid cooling silica gel tube is not more than 20 ℃, a refrigerant passage is formed between two or more liquid cooling hollow silica gel tubes, the heat in the cable is taken away along with the flowing of the refrigerant, the efficient heat transfer is continuously carried out, and the cable is enabled to keep running at a reasonable temperature.
The further improvement is that the soft copper-clad aluminum alloy wire braided coaxial conductor is formed by braiding a plurality of soft copper-clad aluminum alloy wires with the diameter of 0.3mm around the outer wall of the liquid cooling hollow silica gel tube, thereby ensuring good heat transfer connectionContacting the channel, wherein the number of weaving layers is not less than 6; the thinnest point of the copper layer in the soft copper-clad aluminum alloy wire is not less than 0.012mm, and the volume ratio of the copper layer is not less than 19% and not more than 22%; the direct current resistivity of the soft copper-clad aluminum alloy monofilament at 20 ℃ is not more than 0.25416 omega mm2And the flexibility and the shock resistance of the whole cable are ensured while the whole structure size of the cable is reduced.
In a further improvement, the thickness of the first crosslinked polyethylene insulating layer and the thickness of the second crosslinked polyethylene insulating layer are not less than 1.4 mm.
Further improved, the thickness of the inner sheath is 0.7mm-1.5 mm.
The further improvement is that the soft copper-clad aluminum alloy wire braided type shielding layer is formed by braiding a plurality of copper-clad aluminum alloy wires with the diameter not more than 0.21mm in one layer; the thinnest point of the copper layer in the copper-clad aluminum alloy wire is not less than 4% of the wire diameter of the monofilament, and the volume ratio of the copper layer is not less than 19% and not more than 22%; the direct current resistivity of the soft copper-clad aluminum alloy monofilament at 20 ℃ is not more than 0.25416 omega, mm 2/m; the whole soft cable has guaranteed the whole interference immunity and the shock resistance of cable simultaneously.
The radiation crosslinking type high-temperature-resistant corrosion-resistant environment-friendly polyolefin outer sheath is further improved, the thickness of the radiation crosslinking type high-temperature-resistant corrosion-resistant environment-friendly polyolefin outer sheath is 1.6-2.4 mm, and the heat dissipation effect of the surface of the charging cable is considered while the high-temperature-resistant corrosion-resistant environment-friendly performance of the charging cable is ensured.
The utility model has the beneficial effects that:
according to the cable, heat generated when the copper clad aluminum alloy coaxial conductor tightly woven on the surface of the liquid cooling silicone tube works is taken away in time through a refrigerant flowing loop with the temperature not higher than 20 ℃ in the liquid cooling silicone tube, and the problems that the cable is overheated due to poor heat transfer during heavy current charging of the existing new energy storage charging cable, the continuous use is influenced, and safety accidents such as fire disasters are easily caused are solved; the cable disclosed by the utility model uses the copper-clad aluminum alloy wires as the conductor and the shielding material, so that the new energy storage charging cable is light in weight, low in cost, excellent in performance and good in economical efficiency and practicability while ensuring high performance.
Drawings
Fig. 1 is a schematic view of the present invention.
Detailed Description
The utility model is further described with reference to the following figures and detailed description.
As shown in fig. 1, the utility model relates to a liquid-cooled large-current charging cable for new energy storage, which comprises a control cable core 1 and a liquid-cooled coaxial cable core 2, wherein the control cable core 1 is formed by twisting a plurality of insulating cable cores and then extruding and wrapping environment-friendly polyvinyl chloride protective layers 1-3; the insulated wire core is composed of a copper-clad aluminum alloy conductor 1-1 and a first crosslinked polyethylene insulating layer 1-2 extruded outside the copper-clad aluminum alloy conductor;
the liquid-cooled coaxial cable core 2 is composed of a liquid-cooled hollow silicone tube 2-1, a soft copper-clad aluminum alloy braided coaxial conductor 2-2 wrapped outside the liquid-cooled hollow silicone tube, and a second crosslinked polyethylene insulating layer 2-3 extruded outside the soft copper-clad aluminum alloy braided coaxial conductor;
a plurality of control cable cores and a liquid cooling coaxial cable core are twisted into a cable core, a polypropylene-based halogen-free low-smoke filling body 3 is filled in the gap of the cable core, a halogen-free low-smoke environment-friendly polyolefin inner sheath 4 is extruded and wrapped outside the cable core, a soft copper-clad aluminum alloy wire braided shielding layer 5 is wrapped outside the halogen-free low-smoke environment-friendly polyolefin inner sheath, and an irradiation cross-linked high-temperature-resistant corrosion-resistant environment-friendly polyolefin outer sheath 6 is extruded and wrapped on the outermost layer.
Example (b):
firstly, the thinnest point of a monofilament copper layer is not less than 4% of the diameter of the monofilament, the volume ratio of the copper layer is not less than 19% and not more than 22%, and the direct current resistivity at 20 ℃ is not more than 0.25416 omega mm248 soft copper-clad aluminum alloy wires with the diameter of not more than 0.21mm required by the per meter are stranded by an S-400 bundle stranding machine to prepare 1.5mm2The control cable core conductor is extruded by an SJ-70 extruder to form crosslinked polyethylene insulation with the thickness of not less than 1.4mm, and the control cable core is prepared by three-core cabling and extrusion coating of an environment-friendly polyvinyl chloride protective layer after steam crosslinking;
selecting a silicone tube with the wall thickness of 0.6-1.2 mm, the pressure resistance of 12kpa and the outer diameter of 60mm, and using HGSB-24B
The coaxial conductor is woven and braided on the surface of the silicone tube by the high-speed braiding machineThe weaving monofilament adopts a soft copper-clad aluminum alloy wire with the diameter of 0.3mm, the thinnest point of the copper layer in the soft copper-clad aluminum alloy wire is not less than 0.012mm, and the volume ratio of the copper layer is not less than 19% and not more than 22%; the DC resistivity at 20 ℃ is 0.25415 omega mm2M, weaving 7 pieces per spindle, weaving 6 layers, extruding and wrapping crosslinked polyethylene with the thickness of not less than 1.4mm, and insulating to obtain the liquid-cooled coaxial cable core;
filling two control cable cores, two liquid cooling coaxial cable cores and halogen-free low-smoke filled polypropylene into a cable, and then extruding and coating a halogen-free low-smoke environment-friendly polyolefin inner sheath with the thickness of 0.7-1.5 mm by using an SJ-90 extruder; the thinnest point of the copper layer is 0.008mm, the volume ratio of the copper layer is not less than 19% and not more than 22%, and the direct current resistivity at 20 ℃ is 0.25414 omega mm2The soft copper-clad aluminum alloy monofilament with the diameter of 0.3mm is braided into a shielding layer by using an HGSB-24B high-speed braiding machine with 6 pieces per spindle, and finally, an SJ-90 extruder is used for extruding a high-temperature-resistant corrosion-resistant environment-friendly polyolefin outer sheath with the thickness of 1.6mm-2.4mm, and the cable is prepared after irradiation crosslinking.
For the resistance of the copper clad aluminum alloy conductor of the cable control cable core and the soft copper clad aluminum alloy woven coaxial conductor of the liquid cooling coaxial cable core, according to the 4 th part of GB/T3048.4-2007 electric property test method of electric wires and cables: testing a conductor direct current resistance test, wherein the test result meets the requirements of GB/T3956-2008 conductor of cable;
insulation resistance was measured according to GB/T3048.5-2007 test method for Electrical Properties of electric wire and Cable, part 5: testing by an insulation resistance test, wherein the detection result shows that the insulation resistance is 150 MOmega at the ambient temperature and 15 MOmega at the working temperature; meets the requirements.
The AC voltage test is carried out according to GB/T3048.8 electric property test method of wires and cables part 8: and an alternating voltage test is carried out, and the detection result is that the breakdown is not generated at 3.5kV/5min, thereby meeting the requirements.
Other performances of the cable are detected according to related national standards and all meet the requirements.
The problem that safety accidents such as fire disasters and the like are easily caused due to the fact that the temperature of the existing new energy storage charging cable is increased and even overheated when the cable is charged by large current is solved; the weight of the cable is reduced while the charging cable is guaranteed to resist high temperature, corrosion and vibration and continuously and stably work, and the cost is saved; the cable has good economical efficiency and practicability, and meets the market demand.
While the utility model has been described in terms of its preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model.
Claims (8)
1. The utility model provides a liquid cooling type heavy current charging cable for new forms of energy storage which characterized in that: the cable comprises a control cable core and a liquid-cooled coaxial cable core, wherein a plurality of control cable cores and the liquid-cooled coaxial cable core are twisted into the cable core, a polypropylene-based halogen-free low-smoke filler is filled in the gap of the cable core, a halogen-free low-smoke environment-friendly polyolefin inner sheath is extruded outside the cable core, a soft copper-clad aluminum alloy wire braided shielding layer is wound outside the halogen-free low-smoke environment-friendly polyolefin inner sheath, and an irradiation cross-linked high-temperature-resistant corrosion-resistant environment-friendly polyolefin outer sheath is extruded outside the outermost layer; the control cable core is formed by twisting a plurality of insulated wire cores and then extruding and wrapping an environment-friendly polyvinyl chloride protective layer; the insulated wire core is composed of a copper-clad aluminum alloy conductor and a first crosslinked polyethylene insulating layer extruded outside the copper-clad aluminum alloy conductor; the liquid-cooled coaxial cable core is composed of a liquid-cooled hollow silica gel tube, a soft copper-clad aluminum alloy woven coaxial conductor wound outside the liquid-cooled hollow silica gel tube, and a second crosslinked polyethylene insulating layer extruded outside the soft copper-clad aluminum alloy woven coaxial conductor.
2. The liquid-cooled large-current charging cable for new energy storage according to claim 1, characterized in that: the copper-clad aluminum alloy conductor is formed by stranding a plurality of soft copper-clad aluminum alloy monofilaments with the diameter not more than 0.21mm, the thinnest point of the copper layer in each soft copper-clad aluminum alloy monofilament is not less than 4% of the wire diameter of each monofilament, and the volume ratio of the copper layer is not less than 19% and not more than 22%; the soft copperThe DC resistivity of the aluminum-coated alloy monofilament at 20 ℃ is not more than 0.25416 omega mm2/m。
3. The liquid-cooled large-current charging cable for new energy storage according to claim 1, characterized in that: the wall thickness of the liquid cooling hollow silicone tube is 0.6 mm-1.2 mm, and the withstand voltage is not lower than 12 kpa; the temperature of the refrigerant in the liquid cooling hollow silica gel tube is not more than 20 ℃.
4. The liquid-cooled large-current charging cable for new energy storage according to claim 1, characterized in that: the soft copper-clad aluminum alloy wire braided coaxial conductor is formed by braiding a plurality of soft copper-clad aluminum alloy wires with the diameter of 0.3mm around the outer wall of the liquid-cooled hollow silica gel tube, and the number of braided layers is not less than 6; the thinnest point of the copper layer in the soft copper-clad aluminum alloy wire is not less than 0.012mm, and the volume ratio of the copper layer is not less than 19% and not more than 22%; the direct current resistivity of the soft copper-clad aluminum alloy monofilament at 20 ℃ is not more than 0.25416 omega mm2/m。
5. The liquid-cooled large-current charging cable for new energy storage according to claim 1, characterized in that: the thickness of the first crosslinked polyethylene insulating layer and the thickness of the second crosslinked polyethylene insulating layer are not less than 1.4 mm.
6. The liquid-cooled large-current charging cable for new energy storage according to claim 1, characterized in that: the thickness of the inner sheath is 0.7mm-1.5 mm.
7. The liquid-cooled large-current charging cable for new energy storage according to claim 1, characterized in that: the soft copper-clad aluminum alloy wire braided type shielding layer is formed by braiding a plurality of copper-clad aluminum alloy wires with the diameter not more than 0.21mm in one layer; the thinnest point of the copper layer in the copper-clad aluminum alloy wire is not less than 4% of the wire diameter of the monofilament, and the volume ratio of the copper layer is not less than 19% and not more than 22%; the direct current resistivity of the soft copper-clad aluminum alloy monofilament at 20 ℃ is not more than 0.25416 omega mm2/m。
8. The liquid-cooled large-current charging cable for new energy storage according to claim 1, characterized in that: the thickness of the irradiation crosslinking type high temperature resistant corrosion resistant environment-friendly polyolefin outer sheath is 1.6mm-2.4 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122219519.7U CN215527327U (en) | 2021-09-14 | 2021-09-14 | Liquid cooling type large-current charging cable for new energy storage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122219519.7U CN215527327U (en) | 2021-09-14 | 2021-09-14 | Liquid cooling type large-current charging cable for new energy storage |
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| Publication Number | Publication Date |
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| CN215527327U true CN215527327U (en) | 2022-01-14 |
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| CN202122219519.7U Active CN215527327U (en) | 2021-09-14 | 2021-09-14 | Liquid cooling type large-current charging cable for new energy storage |
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