CN113299428A - Electric automobile heat conduction cable and preparation method thereof - Google Patents
Electric automobile heat conduction cable and preparation method thereof Download PDFInfo
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- CN113299428A CN113299428A CN202110549710.XA CN202110549710A CN113299428A CN 113299428 A CN113299428 A CN 113299428A CN 202110549710 A CN202110549710 A CN 202110549710A CN 113299428 A CN113299428 A CN 113299428A
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- 238000002360 preparation method Methods 0.000 title claims description 6
- 239000004020 conductor Substances 0.000 claims abstract description 86
- 239000007788 liquid Substances 0.000 claims abstract description 28
- 238000009413 insulation Methods 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 17
- 230000017525 heat dissipation Effects 0.000 claims description 69
- 239000000463 material Substances 0.000 claims description 15
- 239000000110 cooling liquid Substances 0.000 claims description 9
- 239000004033 plastic Substances 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 239000003292 glue Substances 0.000 claims description 6
- 238000004806 packaging method and process Methods 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 4
- 239000002826 coolant Substances 0.000 claims description 3
- 238000005538 encapsulation Methods 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 238000001816 cooling Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 7
- 238000012545 processing Methods 0.000 abstract description 6
- 239000000446 fuel Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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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
- H01B7/0009—Details relating to the conductive cores
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/14—Conductive energy transfer
- B60L53/18—Cables specially adapted for charging electric vehicles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
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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
- H01B7/42—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction
- H01B7/421—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction for heat dissipation
- H01B7/423—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction for heat dissipation using a cooling fluid
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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
- H01B7/42—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction
- H01B7/428—Heat conduction
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/006—Constructional features relating to the conductors
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Insulated Conductors (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
Abstract
The embodiment of the invention provides a heat-conducting cable for an electric automobile, wherein a liquid cooling pipeline is embedded in the cable, and a heat-conducting material is filled between the liquid cooling pipeline and a wire core, so that heat emitted by a conductor is transferred to liquid in the pipeline through the heat-conducting material, and then the heat is taken away through liquid flowing; the power line conductor is designed to be stranded on the inner layer and woven on the outer layer, so that the conductor cannot be loosened in the processing and using processes; the pipe wall is provided with a proper amount of small holes, so that liquid can be in direct contact with the conductor, the heat conduction efficiency is increased, and the liquid loop is connected with the terminal and the pile seat by virtue of the insulation or the sheath layer.
Description
Technical Field
The invention relates to the technical field of electric automobile high-power charging liquid cooling systems, in particular to an electric automobile heat conducting cable and a preparation method thereof.
Background
The new energy automobile is an automobile which adopts a novel power system and is completely or mainly driven by novel energy, and the new energy automobile mainly comprises a pure electric automobile, a plug-in hybrid electric automobile and a fuel cell automobile. The energy-saving automobile is an automobile with an internal combustion engine as a main power system and the fuel consumption of the comprehensive working condition superior to the target value of the next stage. The development of energy-saving and new energy automobiles is an important measure for reducing the fuel consumption of automobiles, relieving the contradiction between fuel supply and demand, reducing exhaust emission, improving atmospheric environment, promoting the technical progress of automobile industry and optimizing and upgrading.
With the increasing of the number and the demand of new energy vehicles, the number of peripheral devices of the new energy vehicles is also increased, such as charging piles, charging cables and the like.
At present, when electric automobile charges at the heavy current, the big problem of calorific capacity can appear in the charging cable, though there is certain alleviating through the line footpath that increases the wire, but the cable problem of generating heat of solution that can not be fine to the electricity passes through cable outward appearance heat dissipation when charging, and the speed is heated for a long time slowly and is ageing easily to the cable top layer.
Disclosure of Invention
In view of the above problems, embodiments of the present invention are provided to provide an electric vehicle thermal conductive cable and a corresponding method for preparing an electric vehicle thermal conductive cable, which overcome or at least partially solve the above problems.
In order to solve the above problems, an embodiment of the present invention discloses a heat conducting cable for an electric vehicle, including:
the protective sleeve is attached to the heat insulation layer, and the protective sleeve is wrapped on the heat insulation layer in a closed manner;
the heat insulation layer is coated with at least two power cables which are not in contact with each other;
the power cable comprises a heat dissipation pipeline and a conductor wire which are packaged into a whole, specifically, the pipeline cavity of the heat dissipation pipeline is not completely filled with the conductor wire and/or the outer wall of the heat dissipation pipeline is coated with the conductor wire, and the outer layer of the conductor wire is further coated with an insulating heat conduction layer;
a pipeline cavity in the heat dissipation pipeline is filled with heat dissipation cooling liquid;
the heat-conducting material and the auxiliary cable are arranged in the gap part of the inner cavity of the heat-insulating layer;
one end of the electric automobile heat conduction cable is provided with a terminal connected with the charging pile base, the other end of the electric automobile heat conduction cable is provided with a charging gun, and the charging gun is electrically connected with a conductor wire of the power cable;
the terminal is connected with the heat dissipation pipeline and used for forming a liquid loop.
Furthermore, the pipe wall of the heat dissipation pipeline is provided with small holes.
Further, the heat dissipation cooling liquid in the heat dissipation pipeline is non-conductive or conductive liquid.
Further, the conductor wire includes an inner layer and an outer layer;
the inner layer is a stranded conductor wire layer;
the outer layer is a braided conductor wire layer.
Further, the conductor wire is packaged in the insulating heat conduction layer to serve as a power cable and the heat dissipation pipeline for split packaging, wherein the number of the power cable and the number of the heat dissipation pipeline are at least two.
Further, the heat conduction material is heat conduction glue or heat conduction mud or AB glue with the heat conduction coefficient larger than 1W/mK.
Further, the sheath is an insulating rubber plastic layer.
Furthermore, a reinforcing structure is arranged in the insulating rubber-plastic layer;
the reinforcing structure is spiral or linear.
The embodiment of the invention discloses a preparation method of a heat conducting cable of an electric automobile, which comprises the following steps:
implanting conductor wires which are not completely filled in the pipeline cavities of the heat dissipation pipelines into the pipeline cavities of at least two preset heat dissipation pipelines to form a power cable; or laying the conductor lines on the outer walls of at least two preset heat dissipation pipelines to form a power cable; or at least two conductor wires and at least two heat dissipation pipelines are packaged in the heat conduction material together, and the conductor wires are used as power cables;
performing outer layer treatment on the power cables, specifically, injecting a heat conduction material into the outer layer space of the power cables, and performing insulation treatment on the outer layer of each power cable;
carrying out heat insulation packaging on the processed power cable to obtain a power cable containing a heat insulation layer;
and (4) carrying out sheath encapsulation on the power cable containing the heat insulation layer to obtain the heat conduction cable of the electric automobile.
Further, the outer-layer processing of the power cable further includes: the pipeline wall of the heat dissipation pipeline is provided with a plurality of small holes for communicating the pipeline cavity and the outer layer of the heat dissipation pipeline;
and laying an auxiliary cable in the outer space of the power cable.
The embodiment of the invention has the following advantages:
the conductor of the power cable is designed to be a stranded conductor wire layer on the inner layer and a braided conductor wire layer on the outer layer, and the braided layer can prevent the conductor wire from loosening in the processing and using processes; the heat dissipation pipeline is filled with the heat conduction material between the liquid cooling pipeline and the wire core in a liquid cooling mode, so that heat emitted by the conductor is quickly transferred to liquid in the pipeline longitudinally through the heat conduction material, and then is taken away through liquid flowing, and the longitudinal heat conduction efficiency is improved; the cable sheath layer is coated with a layer of heat insulation material, so that heat emitted by the conductor is prevented from being transversely transferred to the cable sheath layer, and the transverse heat conduction efficiency is reduced; the cable has fast longitudinal heat conduction and slow transverse heat conduction, thereby improving the charging efficiency and ensuring the safety of a user; the pipe wall is provided with a proper amount of small holes, so that liquid can be directly contacted with the conductor, and the heat conduction efficiency is improved.
Drawings
FIG. 1 is a schematic cross-sectional view of an embodiment of a heat-conducting cable for an electric vehicle according to the present invention;
FIG. 2 is a schematic piping diagram of a heat conducting cable for an electric vehicle according to the present invention;
FIG. 3 is a schematic view of a conductor line structure of a heat conducting cable for an electric vehicle according to the present invention;
FIG. 4 is a schematic view illustrating a usage state of a heat conducting cable of an electric vehicle according to the present invention;
fig. 5 is a flowchart illustrating steps of an embodiment of a method for manufacturing a heat conducting cable for an electric vehicle according to the present invention.
The drawings illustrate the following:
1. a heat dissipation pipe; 2. a lead body; 3. a thermal insulation layer; 4. a sheath; 5. a thermally conductive material; 6. an auxiliary cable; 7. an insulating heat-conducting layer; 8. a charging gun; 11. a conduit cavity; 12. a small hole; 21. a layer of stranded conductor wires; 22. the conductor wire layer is woven.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description thereof.
One of the core ideas of the embodiment of the invention is that a liquid cooling pipeline is embedded in the cable, and a heat conducting material is filled between the liquid cooling pipeline and the wire core, so that heat emitted by the conductor is transferred to liquid in the pipeline through the heat conducting material, and then the heat is taken away through liquid flowing; the power line conductor is designed to be stranded on the inner layer and woven on the outer layer, so that the conductor cannot be loosened in the processing and using processes; the pipe wall is provided with a proper amount of small holes, so that liquid can be in direct contact with the conductor, the heat conduction efficiency is increased, and the liquid loop is connected with the terminal and the pile seat by virtue of the insulation or the sheath layer.
Referring to fig. 1, a schematic cross-sectional structure diagram of an embodiment of a thermal conductive cable for an electric vehicle according to the present invention is shown, and specifically, the thermal conductive cable may include:
the heat insulation layer 3 is coated with the sheath 4 in a closed manner; the heat insulation layer 3 is wrapped with at least two power cables which are not in contact with each other; the power cable comprises a heat dissipation pipeline 1 and a conductor wire 2 which are packaged into a whole, specifically, as shown in fig. 1, a pipeline cavity 11 of the heat dissipation pipeline 1 is not completely filled with the conductor wire, as shown in fig. 1a, or the outer wall of the heat dissipation pipeline 1 is coated with the conductor wire 2, and the outer layer of the conductor wire is further coated with an insulating heat conduction layer 7, as shown in fig. 1 b; the pipeline cavity 11 in the heat dissipation pipeline 1 is filled with heat dissipation cooling liquid, wherein when the conductor wire 2 is arranged in the heat dissipation pipeline, heat dissipated by the conductor can be directly taken away through the heat dissipation cooling liquid, and the heat dissipation efficiency is improved; the heat-conducting material 5 and the auxiliary cable 6 are arranged in the gap part of the inner cavity of the heat-insulating layer 3; one end of the electric automobile heat conducting cable is provided with a terminal connected with the charging pile base, the other end of the electric automobile heat conducting cable is provided with a charging gun 8, and as shown in fig. 4, the charging gun 8 is electrically connected with the conductor wire 2 of the power cable; the terminal is connected with the heat dissipation pipe 1 of the power cable and used for forming a liquid loop.
The heat conducting material 5 is filled between the heat dissipation pipeline 1 in the inner cavity of the heat insulation layer 3 and the power cable, so that when the heat conducting cable works, heat emitted by the conductor wire 2 is longitudinally and quickly transferred to liquid in the heat dissipation pipeline 1 through the heat conducting material 5, and then the heat is taken away through the flowing of heat dissipation cooling liquid, and the longitudinal heat conducting efficiency is improved; a heat insulation layer 3 made of heat insulation materials is coated in a sheath 4 of the cable, so that heat emitted by the conductor wire 2 is prevented from being transversely transmitted to the cable sheath 4, and transverse heat conduction efficiency is reduced.
In the above embodiments, since the charging of the automobile may require the use of a large current for charging; the conductor wire 2 is formed to have a resistance value which is fixed according to the resistance characteristic of the conductor according to the heat power calculation formula I2R shows that when a large current passes through the conductor wire 2, a large amount of heat is generated, the heat is transferred to the heat dissipation pipeline 1 through the heat conduction material 5, and the heat is longitudinally conducted and output by the heat dissipation cooling liquid in the heat dissipation pipeline 1; meanwhile, the heat insulation layer 3 arranged in the cable sheath 4 of the heat conduction cable prevents heat from being dissipated from the cable sheath 4, and the temperature of the outside of the whole heat conduction cable is not too high when the heat conduction cable is used, so that the problem of cable overheating can not occur when the heat conduction cable is used for a long time.
In one embodiment, the heat dissipation coolant of the pipe cavity 11 is a non-conductive or conductive liquid.
Further, the pipe wall of the heat dissipation pipe 1 is provided with small holes 12, as shown in fig. 2; the heat dissipation cooling liquid can be directly contacted with the conductor wire 2 and the heat conduction material 5 through the small holes 12 in the heat dissipation pipeline 1, so that the heat dissipation can be well performed on the conductor wire 2 of the power cable and the auxiliary cable 6, and the heat dissipation efficiency is further improved; in the present embodiment, the heat dissipation cooling liquid in the conduit cavity 11 is preferably a non-conductive liquid, such as an electronic fluorinated liquid, to prevent short-circuit between the conductor cables.
In one embodiment, the conductor wire 2 includes an inner layer and an outer layer; the inner layer is a stranded conductor wire layer 21; the outer layer is a braided conductor wire layer 22, as shown in fig. 3, the wire conductor 2 of the power cable is designed to have an inner layer which is a stranded conductor layer 21, and the outer layer which is the braided conductor wire layer 22 weaves the conductor wire layer, so that the conductor wire 2 can not be loosened in the processing and using processes through the weaved conductor wire.
In one embodiment, as shown in fig. 1c, the conductor wires 1 are packaged in the insulating and heat conducting layer 7 as power cables and heat dissipation pipes 1 which are packaged separately, wherein the number of the power cables and the number of the heat dissipation pipes 1 are at least two; the power cable and the heat dissipation pipeline 1 are respectively and independently packaged, wherein the outer layer of the power cable is an insulating heat conduction layer 7; many power cables of setting, through its insulating heat-conducting layer 7, conduct the heat to heat conduction material 5, conduct to heat dissipation pipeline 1 by heat conduction material 5 again, because heat dissipation pipeline 1 is equipped with aperture 12 and can makes, heat conduction material 5 directly conducts the heat to the heat dissipation coolant liquid, wherein, many power cables make the calorific capacity that the electric current can shunt reduction branch root power line when charging, cooperate the high-efficient heat dissipation of heat dissipation pipeline 1, make the heat conduction cable keep at relative low temperature state at the during operation, do not make inside and outside overheated, it is safer when using.
In one embodiment, the heat conductive material 5 is heat conductive glue or heat conductive mud or AB glue with a heat conductivity greater than 1W/mK; the use of a heat conducting material 5 with a good heat conductivity coefficient makes the heat conduction more efficient.
In one embodiment, the sheath 4 is an insulating rubber-plastic layer.
Further, a reinforcing structure (not shown in the figure) is arranged in the insulating rubber-plastic layer; the reinforcing structure is spiral or linear.
In the above embodiment, the sheath 4 is made of an insulating rubber-plastic material, wherein a reinforcing structure is used to increase the toughness and strength of the heat conducting cable.
It should be noted that, for simplicity of description, the method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the illustrated order of acts, as some steps may occur in other orders or concurrently in accordance with the embodiments of the present invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the invention.
Referring to fig. 5, a flowchart illustrating steps of an embodiment of a method for manufacturing a heat conducting cable for an electric vehicle of the present invention is shown, which may specifically include the following steps:
s100, implanting conductor wires which are not completely filled in the pipeline cavities of the heat dissipation pipelines into the pipeline cavities 11 of at least two preset heat dissipation pipelines 1 to form a power cable; or laying the conductor lines on the outer walls of at least two preset heat dissipation pipelines to form a power cable; or at least two conductor wires and at least two heat dissipation pipelines are packaged in the heat conduction material together, and the conductor wires are used as power cables;
step S200, performing outer layer treatment on the power cables, specifically, injecting a heat conduction material into the outer layer space of the power cables, and performing insulation treatment on the outer layer of each power cable;
step S300, performing heat insulation packaging on the processed power cable to obtain the power cable containing a heat insulation layer;
and S400, sheathing and packaging the power cable containing the heat insulation layer to obtain the heat conduction cable of the electric automobile.
Further, the outer-layer processing is performed on the power cable, and the method further comprises the following steps: the pipeline wall of the heat dissipation pipeline is provided with a plurality of small holes for communicating the pipeline cavity and the outer layer of the heat dissipation pipeline;
and laying an auxiliary cable in the outer space of the power cable.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The electric vehicle heat conducting cable and the preparation method thereof provided by the invention are described in detail, and the principle and the implementation mode of the invention are explained by applying specific examples, and the description of the examples is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. An electric vehicle thermal conductive cable, comprising:
the protective sleeve is attached to the heat insulation layer, and the protective sleeve is wrapped on the heat insulation layer in a closed manner;
the heat insulation layer is coated with at least two power cables which are not in contact with each other;
the power cable comprises a heat dissipation pipeline and a conductor wire which are packaged into a whole, wherein specifically, the conductor wire is not completely filled in a pipeline cavity of the heat dissipation pipeline, or the conductor wire is coated on the outer wall of the heat dissipation pipeline, and an insulating heat conduction layer is further coated on the outer layer of the conductor wire;
a pipeline cavity in the heat dissipation pipeline is filled with heat dissipation cooling liquid;
the heat-conducting material and the auxiliary cable are arranged in the gap part of the inner cavity of the heat-insulating layer;
one end of the electric automobile heat conduction cable is provided with a terminal connected with the charging pile base, the other end of the electric automobile heat conduction cable is provided with a charging gun, and the charging gun is electrically connected with a conductor wire of the power cable;
the terminal is connected with the heat dissipation pipeline and used for forming a liquid loop.
2. The electric vehicle thermal cable of claim 1, wherein the heat dissipating coolant of the conduit cavity is a non-electrically conductive or electrically conductive liquid.
3. The electric vehicle heat conduction cable of claim 2, wherein the wall of the heat dissipation pipe is provided with small holes.
4. The electric vehicle thermal conductive cable of claim 1, wherein the conductor wire comprises an inner layer and an outer layer;
the inner layer is a stranded conductor wire layer;
the outer layer is a braided conductor wire layer.
5. The heat-conducting cable for the electric automobile according to claim 1, further comprising a step of encapsulating the conductor wire in the insulating heat-conducting layer as a power cable and a heat-radiating pipeline which are separately encapsulated, wherein the number of the power cable and the number of the heat-radiating pipeline are at least two respectively.
6. The heat-conducting cable for the electric automobile as claimed in claim 1, wherein the heat-conducting material is heat-conducting glue or heat-conducting mud or AB glue with a heat conductivity coefficient greater than 1W/mK.
7. The heat-conducting cable for the electric automobile as claimed in claim 1, wherein the sheath is an insulating rubber-plastic layer.
8. The heat-conducting cable for the electric automobile as claimed in claim 7, wherein a reinforcing structure is arranged in the insulating rubber-plastic layer;
the reinforcing structure is spiral or linear.
9. A preparation method of a heat conducting cable of an electric automobile is characterized by comprising the following steps:
implanting conductor wires which are not completely filled in the pipeline cavities of the heat dissipation pipelines into the pipeline cavities of at least two preset heat dissipation pipelines to form a power cable; or laying the conductor lines on the outer walls of at least two preset heat dissipation pipelines to form a power cable; or at least two conductor wires and at least two heat dissipation pipelines are packaged in the heat conduction material together, and the conductor wires are used as power cables;
performing outer layer treatment on the power cables, specifically, injecting a heat conduction material into the outer layer space of the power cables, and performing insulation treatment on the outer layer of each power cable;
carrying out heat insulation packaging on the processed power cable to obtain a power cable containing a heat insulation layer;
and (4) carrying out sheath encapsulation on the power cable containing the heat insulation layer to obtain the heat conduction cable of the electric automobile.
10. The method of claim 9, wherein the over-coating the power cable further comprises: the pipeline wall of the heat dissipation pipeline is provided with a plurality of small holes for communicating the pipeline cavity and the outer layer of the heat dissipation pipeline;
and laying an auxiliary cable in the outer space of the power cable.
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| CN202110549710.XA CN113299428A (en) | 2021-05-20 | 2021-05-20 | Electric automobile heat conduction cable and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110549710.XA CN113299428A (en) | 2021-05-20 | 2021-05-20 | Electric automobile heat conduction cable and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114242327A (en) * | 2021-12-31 | 2022-03-25 | 深圳市沃尔新能源电气科技股份有限公司 | Liquid cooling cable and charging device |
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