CN114023497A - DC charging pile cable - Google Patents

DC charging pile cable Download PDF

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Publication number
CN114023497A
CN114023497A CN202111224761.1A CN202111224761A CN114023497A CN 114023497 A CN114023497 A CN 114023497A CN 202111224761 A CN202111224761 A CN 202111224761A CN 114023497 A CN114023497 A CN 114023497A
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parts
core conductors
auxiliary
control line
control wire
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CN202111224761.1A
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CN114023497B (en
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崔久德
卜晓华
魏三土
任金玲
安夏天
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Wuxi Xinhongye Cable Technology Co ltd
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Wuxi Xinhongye Cable Technology Co ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/0045—Cable-harnesses
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
    • C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
    • C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2227—Oxides; Hydroxides of metals of aluminium
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/20—Applications use in electrical or conductive gadgets
    • C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables

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  • Chemical & Material Sciences (AREA)
  • Insulated Conductors (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)

Abstract

The invention discloses a direct current charging pile cable, which comprises: the power cable comprises 3 power cable core conductors, two auxiliary power cable core conductors, an auxiliary control line and a main control line, wherein the auxiliary control line and the main control line are formed by stranding 2 control cable core conductors respectively, a sheath layer is coated on the outer surface of the belting layer, and the sheath layer consists of the following components in parts by weight: polyolefin elastomer, polypropylene resin, silane-coated modified aluminum hydroxide, aluminum diethylphosphinate, calcined kaolin, polyethylene wax, an antioxidant, a crosslinking agent, a styrene-butadiene copolymer and polyethylene glycol distearate; the polyolefin consists of 50 to 80 parts by weight of an ethylene-octene copolymer and 20 to 50 parts by weight of a linear low density polyethylene. According to the direct current charging pile cable, under the condition that the temperature of IRM902 test oil is 168h/100 +/-2 ℃, the retention rate of the tensile strength of the sheath layer reaches 75%, and the retention rate of the elongation at break reaches 80%.

Description

DC charging pile cable
Technical Field
The invention relates to the field of charging cables, in particular to a direct-current charging pile cable.
Background
At present new forms of energy electric automobile charges generally and charges on specific electric pile that fills, fills and adopt the connector and fill electric pile cable junction between electric pile and the new forms of energy electric automobile, and when the cable passed through certain load current, the conductor can produce the heat and lead to the cable to generate heat, can endanger safe in utilization when the load current of cable surpassed rated load. At present most public charging stake all sets up outdoors, for example: the service area of gas station side or highway etc. some even set up in open parking area, consequently require to fill electric pile cable and have ultraviolet resistance, resistant greasy dirt.
Disclosure of Invention
The invention aims to provide a direct current charging pile cable, which has the advantages that under the condition that IRM902 test oil is 168h/100 +/-2 ℃, the retention rate of tensile strength of a sheath layer reaches 75%, the retention rate of elongation at break reaches 80%, and the oil stain resistance of the sheath layer of the charging cable is enhanced.
In order to achieve the purpose, the invention adopts the technical scheme that: a dc charging post cable, comprising: the power cable comprises 3 power cable core conductors, two auxiliary power cable core conductors, an auxiliary control line and a main control line, wherein the auxiliary control line and the main control line are formed by twisting 2 control cable core conductors respectively;
the outer surfaces of the control wire core conductor of the auxiliary control wire and the first control wire core conductor and the second control wire core conductor of the main control wire are respectively coated with a second insulating layer, a wrapping layer is wrapped on the outer surfaces of the 3 power wire core conductors, the two auxiliary power wire core conductors, the auxiliary control wire and the main control wire, and a sheath layer is wrapped on the outer surface of the wrapping layer;
the sheath layer comprises the following components in parts by weight: 100 parts of polyolefin elastomer, 9 parts of polypropylene resin, 35 parts of silane-coated modified aluminum hydroxide, 1.2 parts of diethyl aluminum phosphinate, 15 parts of calcined kaolin, 4 parts of polyethylene wax, 2 parts of crosslinking agent, 2.5 parts of antioxidant, 10 parts of styrene-butadiene copolymer and 3 parts of polyethylene glycol distearate;
the polyolefin consists of 50 to 80 parts by weight of an ethylene-octene copolymer and 20 to 50 parts by weight of a linear low density polyethylene.
The technical scheme of further improvement in the technical scheme is as follows:
1. in the above scheme, a braided layer is arranged between the 2 control core conductors of the auxiliary control line and an inner insulating layer.
2. In the above scheme, the braid is woven by tin-plated conductor wires.
3. In the scheme, the stranding pitch of the 2 control wire core conductors of the auxiliary control wire is 10-15 mm.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
according to the direct-current charging pile cable, the sheath layer formula is based on the polyolefin elastomer and the polypropylene resin, the styrene-butadiene copolymer and the polyethylene glycol distearate are added, under the condition that the temperature of IRM902 test oil is 168h/100 +/-2 ℃, the tensile strength retention rate of the sheath layer reaches 75%, the elongation at break retention rate reaches 80%, and the oil stain resistance of the sheath layer of the charging cable is enhanced.
Drawings
Fig. 1 is a schematic diagram of a cable structure of the direct current charging pile.
In the above drawings: 1. a power core conductor; 2. an auxiliary power core conductor; 3. a control wire core conductor; 4. an auxiliary control line; 5. a main control line; 51. a first control line core conductor; 52. a second control line core conductor; 6. a first insulating layer; 7. a second insulating layer; 10. an inner insulating layer; 11. and (4) weaving the layer.
Detailed Description
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The invention is further described below with reference to the following examples:
example (b): a dc charging post cable, comprising: the power cable comprises 3 power cable core conductors 1, two auxiliary power cable core conductors 2, an auxiliary control line 4 and a main control line 5, wherein the auxiliary control line 4 and the main control line 5 are formed by twisting 2 control cable core conductors 3 respectively, the outer surfaces of the power cable core conductors 1 and the auxiliary power cable core conductors 2 are coated with a first insulating layer 6, and the main control line 5 consists of a first control cable core conductor 51 positioned in the center and 6 second control cable core conductors 52 twisted on the outer surface of the first control cable core conductor 51;
the outer surfaces of the control wire core conductor 3 of the auxiliary control wire 4 and the first control wire core conductor 51 and the second control wire core conductor 52 of the main control wire 5 are respectively coated with a second insulating layer 7, a wrapping layer is wound on the outer surfaces of the 3 power wire core conductors 1, the two auxiliary power wire core conductors 2, the auxiliary control wire 4 and the main control wire 5, and a sheath layer is coated on the outer surface of the wrapping layer;
the sheath layer comprises the following components in parts by weight: 100 parts of polyolefin elastomer, 9 parts of polypropylene resin, 35 parts of silane-coated modified aluminum hydroxide, 1.2 parts of diethyl aluminum phosphinate, 15 parts of calcined kaolin, 4 parts of polyethylene wax, 2 parts of crosslinking agent, 2.5 parts of antioxidant, 10 parts of styrene-butadiene copolymer and 3 parts of polyethylene glycol distearate. .
The antioxidant is antioxidant 1010, the polyolefin consists of 60 parts by weight of ethylene-octene copolymer and 30 parts by weight of linear low-density polyethylene, and the crosslinking agent is TAC;
a manufacturing method for the direct current charging pile cable comprises the following steps: the power cable comprises 3 power cable core conductors 1, two auxiliary power cable core conductors 2, an auxiliary control line 4 and a main control line 5, wherein the auxiliary control line 4 and the main control line 5 are formed by twisting 2 control cable core conductors 3 respectively, the outer surfaces of the power cable core conductors 1 and the auxiliary power cable core conductors 2 are coated with a first insulating layer 6, and the main control line 5 consists of a first control cable core conductor 51 positioned in the center and 6 second control cable core conductors 52 twisted on the outer surface of the first control cable core conductor 51;
the outer surfaces of the control wire core conductor 3 of the auxiliary control wire 4 and the first control wire core conductor 51 and the second control wire core conductor 52 of the main control wire 5 are respectively coated with a second insulating layer 7, a wrapping layer is wound on the outer surfaces of the 3 power wire core conductors 1, the two auxiliary power wire core conductors 2, the auxiliary control wire 4 and the main control wire 5, and a sheath layer is coated on the outer surface of the wrapping layer;
the sheath layer is obtained by the following steps:
step one, mixing silane-coated modified aluminum hydroxide, aluminum diethylphosphinate, calcined kaolin, polyethylene wax, an antioxidant and a crosslinking agent in a high-speed mixer for 6-10 min to obtain a mixed first mixture;
step two, mixing the polyolefin elastomer, the polypropylene resin, the styrene-butadiene copolymer, the polyethylene glycol distearate and the first mixture in the step one in a high-speed mixer for 10min to obtain a second mixture;
step three, putting the second mixture into a kneading machine, and kneading for 20 minutes at the temperature of 130 ℃ to obtain a kneaded material;
and step four, putting the mixed materials into a reciprocating single-screw extruder for mixing, and then extruding and granulating by a single screw.
The temperature of each section of the screw is 96 ℃ at the feeding section, 112 ℃ at the conveying section, 116 ℃ at the melting section and 105 ℃ at the machine head.
Comparative examples 1 to 2: the direct current charging pile cable comprises a sheath layer and a sheath layer, wherein the sheath layer comprises the following components in parts by weight as shown in table 1:
TABLE 1
Figure 951931DEST_PATH_IMAGE002
The antioxidant of comparative examples 1 and 2 was antioxidant 1010, the polyolefin was composed of 60 parts by weight of ethylene-octene copolymer and 30 parts by weight of linear low density polyethylene, and the crosslinking agent was TAC.
The manufacturing method is the same as the embodiment.
The properties of the jacket layers prepared in the above examples and comparative examples 1 to 2 are shown in table 2:
TABLE 2
Test items Examples Comparative example 2 Comparative example 3
Tensile Strength Retention (mineral oil resistant IRM 902168 h/100. + -. 2 ℃ C.) 77 66 61
Retention of elongation at break (mineral oil resistant IRM 902168 h/100. + -. 2 ℃ C.) 81 64 69
As shown in the evaluation results of Table 2, the sheath layer of the charging cable in the embodiment of the invention has better retention rate of tensile strength and retention rate of elongation at break than those of comparative example 1 and comparative example 2 under the condition of 168h/100 +/-2 ℃ of IRM902 test oil, and the invention enhances the oil stain resistance of the sheath layer of the charging cable.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims (4)

1. The utility model provides a direct current fills electric pile cable which characterized in that: the method comprises the following steps: the power cable comprises 3 power cable core conductors (1), two auxiliary power cable core conductors (2), an auxiliary control line (4) and a main control line (5), wherein the auxiliary control line (4) and the main control line (5) are formed by twisting 2 control cable core conductors (3) respectively, the outer surfaces of the power cable core conductors (1) and the auxiliary power cable core conductors (2) are coated with first insulating layers (6), and the main control line (5) consists of a first control cable core conductor (51) positioned at the center and 6 second control cable core conductors (52) twisted on the outer surface of the first control cable core conductor (51);
the outer surfaces of a control wire core conductor (3) of the auxiliary control wire (4) and a first control wire core conductor (51) and a second control wire core conductor (52) of the main control wire (5) are respectively coated with a second insulating layer (7), a wrapping belt layer is wrapped on the outer surfaces of the 3 power wire core conductors (1), the two auxiliary power wire core conductors (2), the auxiliary control wire (4) and the main control wire (5), and a sheath layer is wrapped on the outer surface of the wrapping belt layer;
the sheath layer comprises the following components in parts by weight: 100 parts of polyolefin elastomer, 9 parts of polypropylene resin, 35 parts of silane-coated modified aluminum hydroxide, 1.2 parts of diethyl aluminum phosphinate, 15 parts of calcined kaolin, 4 parts of polyethylene wax, 2 parts of crosslinking agent, 2.5 parts of antioxidant, 10 parts of styrene-butadiene copolymer and 3 parts of polyethylene glycol distearate;
the polyolefin consists of 50 to 80 parts by weight of an ethylene-octene copolymer and 20 to 50 parts by weight of a linear low density polyethylene.
2. Claim 1 the direct current fills electric pile cable, its characterized in that: a braided layer (11) is arranged between the 2 control wire core conductors (3) of the auxiliary control wire (4) and an inner insulating layer (10).
3. The dc charging pile cable according to claim 2, wherein: the braided layer (11) is formed by braiding tinned conductor wires.
4. The dc charging pile cable according to claim 1, wherein: the stranding pitch of 2 control wire core conductors of the auxiliary control wire (4) is 10-15 mm.
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CN114023498B (en) * 2020-03-17 2024-06-25 无锡鑫宏业线缆科技股份有限公司 Charging cable for electric automobile

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CN111370161A (en) 2020-07-03
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CN114023498B (en) 2024-06-25

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