CN114464363A - Liquid cooling cable, charging gun and charging equipment - Google Patents
Liquid cooling cable, charging gun and charging equipment Download PDFInfo
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- CN114464363A CN114464363A CN202111562971.1A CN202111562971A CN114464363A CN 114464363 A CN114464363 A CN 114464363A CN 202111562971 A CN202111562971 A CN 202111562971A CN 114464363 A CN114464363 A CN 114464363A
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- 239000007788 liquid Substances 0.000 title claims abstract description 517
- 238000001816 cooling Methods 0.000 title claims abstract description 467
- 239000000110 cooling liquid Substances 0.000 claims abstract description 94
- 239000002826 coolant Substances 0.000 claims abstract description 16
- 238000005253 cladding Methods 0.000 claims abstract description 5
- 230000001681 protective effect Effects 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 26
- 230000000694 effects Effects 0.000 abstract description 19
- 238000000034 method Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 238000002955 isolation Methods 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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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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- 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
- B60L53/16—Connectors, e.g. plugs or sockets, 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
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
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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
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
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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
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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
- 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)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The application provides a liquid cooling cable, rifle and battery charging outfit charge for improve the radiating effect of rifle that charges, guarantee the security of charging of rifle. This liquid cooling cable includes: the cable group, the outer protection tube and the liquid cooling tube group; the cable group comprises a cable and an insulating layer, and the insulating layer is coated outside the cable; the outer protection tube circumferentially surrounds the cable group; the liquid cooling nest of tubes sets up between outer protection tube and cable assembly, and the liquid cooling nest of tubes includes liquid cooling outer tube and liquid cooling inner tube, and outside the outer pipe of liquid cooling inner tube circumference cladding in insulating layer, liquid cooling outer tube circumference surrounded in the liquid cooling inner tube outside, forms the liquid cooling passageway that is used for the coolant liquid circulation between the inner wall of liquid cooling outer tube and the outer wall of liquid cooling inner tube. The liquid cooling cable can improve the heat dissipation effect of the charging gun; the structure protection is added on the basis that the insulating layer is arranged between the cooling liquid and the cable, and the use safety of the liquid cooling cable is improved.
Description
Technical Field
The application relates to the technical field of sensors, in particular to a liquid cooling cable, a charging gun and charging equipment.
Background
With the rapid development of the new energy automobile industry, the endurance mileage of the electric automobile is continuously improved, the capacity of the battery is also increased, and the problem of charging speed is solved by increasing the charging power and realizing rapid charging. Increasing the charging current is a common method for realizing high-power charging, but the inherent resistance of the cable material can increase the overall heat consumption of the charging gun. The original method for reducing heat consumption is to increase the wire diameter, but increasing the wire diameter leads to increase in size and weight of the charging gun, and with further increase in charging current, simply increasing the wire diameter of the cable is not feasible. Therefore, how to dissipate heat of the charging gun becomes a key problem for increasing charging power.
In recent years, the heat dissipation of a charging gun by using a liquid cooling technology has become a development direction of a high-power charging gun. According to the difference of cooling working media, the liquid cooling technology can be divided into two routes of oil cooling (the cooling working media are generally silicon oil, and the characteristic is that the working media are not conductive) and water cooling (generally mixed liquid of water and glycol, and the characteristic is that the working media are conductive). The oil cooling technology and the water cooling technology have advantages and disadvantages, wherein the water cooling technology cannot realize immersion type liquid cooling due to the requirement of water and electricity isolation, and the heat dissipation capability of the water cooling technology is relatively weak.
Disclosure of Invention
The application provides a liquid cooling cable, rifle and battery charging outfit charge for improve the radiating effect of rifle that charges, ensure the security simultaneously.
First aspect, this application provides a liquid cooling cable, and this liquid cooling cable can be used and fill electric pile and charge transmission current between the rifle, makes things convenient for the rifle that charges to charge for electric automobile. The liquid cooling cable specifically comprises a cable group, an outer protection tube and a liquid cooling tube group; the cable set comprises a cable and an insulating layer, wherein the cable is particularly used for conveying current, and the insulating layer circumferentially covers the cable to play a role in insulation protection; the outer protection tube surrounds the cable group, the liquid cooling tube group is arranged between the outer protection tube and the cable group, and the outer protection tube is equivalent to form an accommodating space for accommodating the cable group and the liquid cooling tube group; the liquid cooling pipe set is used for providing a liquid cooling scheme for the cable set, and specifically comprises a liquid cooling inner pipe and a liquid cooling outer pipe, wherein the liquid cooling outer pipe circumferentially surrounds the liquid cooling inner pipe, so that a liquid cooling channel for circulating cooling liquid can be formed between the inner wall of the liquid cooling outer pipe and the outer wall of the liquid cooling inner pipe; the liquid cooling inner pipe is coated outside the insulating layer of the cable in a close fit mode, which is equivalent to the liquid cooling channel formed by the liquid cooling pipe group is circumferentially coated outside the cable, and the cooling liquid in the liquid cooling channel and the cable can be circumferentially contacted through the liquid cooling inner pipe and the insulating layer, so that the liquid cooling inner pipe has a larger contact area, and the increase of the contact area can improve the heat dissipation effect; and the liquid cooling inner tube and the insulating layer are equivalent to the isolation of the cable and the cooling liquid, and the effect of two-layer insulation isolation is achieved.
Therefore, in the liquid-cooling cable, the cooling liquid in the liquid-cooling channel has a larger contact area with the cable, so that the cooling liquid can radiate the cable, and the radiating effect can be improved; and the inner liquid cooling pipe wraps outside the insulating layer of the cable, which is equivalent to adding a structure protection on the basis of having the insulating layer between the cooling liquid and the cable, so that the risk of short circuit of the cable can be reduced when the cooling liquid is conductive, and the use safety of the liquid cooling cable is improved.
In a possible implementation manner, the cable set may include a first cable, a second cable, a first insulating layer and a second insulating layer, the first insulating layer circumferentially covers the first cable, and the second insulating layer circumferentially covers the second cable; the liquid cooling pipe set comprises a first liquid cooling outer pipe, a first liquid cooling inner pipe, a second liquid cooling outer pipe and a second liquid cooling inner pipe; the first liquid cooling inner pipe is circumferentially coated outside the first insulating layer, the first liquid cooling outer pipe circumferentially surrounds the first liquid cooling inner pipe, and a first liquid cooling channel is formed between the inner wall of the first liquid cooling outer pipe and the outer wall of the first liquid cooling inner pipe; the second liquid cooling inner pipe circumferentially wraps outside the second insulating layer, and the second liquid cooling outer pipe circumferentially surrounds outside the second liquid cooling inner pipe, forms the second liquid cooling passageway between the inner wall of second liquid cooling outer pipe and the second liquid cooling inner pipe. In the liquid cooling cable with the structure, each cable is equivalent to a liquid cooling channel with a circumferential cladding, and independent liquid cooling heat dissipation can be carried out on each cable.
In another possible implementation manner, the cable set may include a first cable, a second cable, a first insulating layer and a second insulating layer, the first insulating layer circumferentially covers the first cable, and the second insulating layer circumferentially covers the second cable; the liquid cooling pipe set comprises a liquid cooling outer pipe, a first liquid cooling inner pipe and a second liquid cooling inner pipe; the first liquid cooling inner pipe is circumferentially wrapped outside the first insulating layer, the second liquid cooling inner pipe is circumferentially wrapped outside the second insulating layer, the liquid cooling outer pipe circumferentially surrounds the first liquid cooling inner pipe and the second liquid cooling inner pipe, and a liquid cooling channel is formed between the inner wall of the liquid cooling outer pipe and the outer wall of the first liquid cooling inner pipe and between the inner wall of the liquid cooling outer pipe and the outer wall of the second liquid cooling inner pipe. In the liquid cooling cable with the structure, the two cables share one liquid cooling channel which is circumferentially wrapped, and the liquid cooling channel can be used for liquid cooling heat dissipation of the two cables at the same time.
When the number of the cables is three or more than three, the liquid cooling channel can be formed by any one of the above schemes, or by the combination of the two schemes.
The liquid cooling cable can further comprise an auxiliary liquid cooling pipe, the auxiliary liquid cooling pipe is arranged between the cable set and the outer protection pipe, the auxiliary liquid cooling pipe forms an auxiliary channel communicated with the liquid cooling channel, and the auxiliary channel can also be used for circulating the cooling liquid. When the liquid cooling channel is used for feeding liquid, the auxiliary channel can be used for returning liquid, cooling liquid of the cold source firstly enters the liquid cooling channel to carry out liquid cooling heat dissipation on the cable, then the cooling liquid in the liquid feeding channel is collected into the auxiliary channel and conveyed back to the cold source, and circulation of the cooling liquid is realized; when the liquid cooling channel is used for returning liquid, the auxiliary channel can be used for feeding liquid, cooling liquid of the cold source firstly enters the auxiliary channel and then enters the liquid cooling channel to carry out liquid cooling heat dissipation on the cable and then returns to the cold source, and circulation of the cooling liquid is achieved.
When the number of the liquid cooling channels in the liquid cooling cables is at least two, at least one of the liquid cooling channels can be used for liquid inlet, and at least one of the liquid cooling channels is used for liquid return, the circulation of cooling liquid can be realized.
In order to strengthen the combination fastness of liquid cooling inner tube and insulating layer, the liquid cooling inner tube can select to be the pyrocondensation pipe, and when the cable generates heat, the shrink of liquid cooling inner tube can be wrapped up in on the insulating layer more firmly. Of course, the bonding strength between the liquid cooling inner pipe and the insulating layer can be enhanced by other methods such as gluing and thread fitting.
In order to maintain the gap between the liquid cooling inner pipe and the liquid cooling outer pipe (the gap is used for forming the liquid cooling channel), the condition that the interval between the liquid cooling inner pipe and the liquid cooling outer pipe is uneven in the circumferential range of the cable is prevented, a flexible supporting piece can be arranged in the liquid cooling channel, and the flexible supporting piece is provided with a hollow structure for the circulation of cooling liquid. It should be understood that the hollow-out structure herein may be formed on the surface of the flexible support member, or may be formed in the flexible support member, but the hollow-out structure must be conducted to allow the cooling liquid to flow through. Wherein, flexible support piece can fix the inner wall of liquid cooling outer tube, and flexible support piece also can be fixed in the outer wall of liquid cooling inner tube, perhaps, flexible support piece can be fixed in on the inner wall of liquid cooling outer tube and the inner wall of liquid cooling inner tube simultaneously.
In some possible implementations, the flexible supporting member includes a supporting body and a plurality of supporting portions formed on a surface of the supporting body, the supporting body surrounds the liquid-cooled inner tube, and the plurality of supporting portions form the hollow structure.
In some possible implementations, the flexible supporting member spirally surrounds the liquid-cooled inner tube to form a spiral hollow structure.
Of course, other embodiments of the flexible support are possible and will not be described in detail herein.
In a second aspect, the present application provides a charging gun, which has a charging gun head and any one of the liquid cooling cables provided by the above technical scheme, wherein the charging gun head is electrically connected with a cable in the liquid cooling cable. The rifle head that charges is used for with electric automobile butt joint in order to charge electric automobile. Because the liquid cooling cable has better radiating effect and higher security, can improve the radiating effect of rifle that charges, be favorable to the rifle that charges to promote charging power, improve the charging speed.
In a third aspect, the present application further provides a charging device, where the charging device includes a charging pile and the charging pile of the charging gun includes an electrical interface and a cold liquid tank, and a cooling liquid is stored in the cold liquid tank; the electric interface is connected to the cable one end of liquid cooling cable, and the rifle that charges is connected to the other end, and the cold liquid case is used for providing the coolant liquid and making the coolant liquid circulate in the liquid cooling passageway to the liquid cooling passageway. When the cooling liquid circulates in the liquid cooling channel, the cable in the liquid cooling cable can be subjected to good liquid cooling heat dissipation, and the charging safety of the liquid cooling cable is high. When the charging equipment is used for charging the electric automobile, a good heat dissipation effect can be kept when the charging requirement of large current is met, and the charging safety is high.
Drawings
Fig. 1a is a schematic structural diagram of a charging device according to an embodiment of the present disclosure;
fig. 1b is a schematic structural diagram of a charging gun according to an embodiment of the present disclosure;
fig. 2a and fig. 2b are schematic radial cross-sectional structural diagrams of a liquid-cooled cable according to an embodiment of the present application;
fig. 3a and 3b are schematic radial cross-sectional views of a liquid-cooled cable according to an embodiment of the present invention;
fig. 4 is a schematic radial cross-sectional structure view of a liquid-cooled cable according to an embodiment of the present disclosure;
fig. 5a is a schematic radial cross-sectional structure view of a liquid cooling cable according to an embodiment of the present invention, in which a flexible supporting member is disposed in a liquid cooling channel;
FIG. 5b is an enlarged view of portion A of FIG. 5 a;
FIG. 5c is a schematic structural view of the flexible support of FIG. 5 a;
fig. 5d is a schematic radial cross-sectional structure view of a liquid cooling cable according to an embodiment of the present invention, wherein a flexible supporting member is disposed in a liquid cooling channel;
fig. 6a to fig. 6d are schematic radial sectional structural diagrams of a liquid cooling cable according to an embodiment of the present invention, in which a flexible supporting member is disposed in a liquid cooling channel;
fig. 7 is a schematic radial cross-sectional structure view of a liquid cooling cable according to an embodiment of the present disclosure, in which a flexible supporting member is disposed in a liquid cooling channel;
FIG. 8 is a schematic structural diagram of a flexible support member in a liquid-cooled cable according to an embodiment of the present disclosure;
FIGS. 9a and 9b are schematic structural views of a flexible support member in a liquid-cooled cable according to an embodiment of the present application;
FIG. 10 is a schematic diagram of a radial cross-sectional configuration of another liquid-cooled cable according to an embodiment of the present application;
FIG. 11 is a schematic view of a radial cross-section of the liquid cooling cable of FIG. 10 with a flexible support disposed within the liquid cooling passage;
fig. 12a and 12b are schematic radial cross-sectional views of another liquid-cooled cable according to an embodiment of the present application.
Detailed Description
The charging gun is a device for realizing electric energy transmission between the charging device and the electric automobile, and high-power charging can be realized by improving charging current, so that the requirement of the electric automobile on high-capacity quick charging can be met. The increase of charging current has led to the increase of the rifle heat consumption that charges, generally adopts the liquid cooling technique to dispel the heat in order to reach the purpose that reduces the heat consumption to the rifle that charges at present, specifically can be equipped with the liquid cooling circulation system for the rifle that charges for the cooling liquid in the liquid cooling circulation system carries out cold and hot exchange with the realization heat dissipation with the cable contact in the cable. But in the liquid cooling scheme that has now, the cooling liquid leads to the heat-sinking capability can't satisfy the heat dissipation demand of rifle that charges with cable area of contact is little, and accomplish reliable isolation between cable and the cooling liquid for the cable has the short circuit risk.
Based on this, this application embodiment provides a liquid cooling cable, rifle and battery charging outfit that charges to solve above-mentioned problem. In order to make the objects, technical solutions and advantages of the present application more clear, the present application will be further described in detail with reference to the accompanying drawings.
The terminology used in the following examples is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification of this application and the appended claims, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, such as "one or more", unless the context clearly indicates otherwise.
Reference throughout this specification to "one embodiment" or "some embodiments," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise.
The embodiment of the application provides a liquid cooling cable 10, a charging gun 100 comprising the liquid cooling cable 10 and charging equipment. Fig. 1a shows a schematic structural diagram of a charging device, fig. 1b shows a schematic structural diagram of a charging gun 100, and an application scenario of the liquid-cooled cable 10 can be described with reference to fig. 1a and 1 b. The charging equipment specifically can include the rifle 100 that charges and fill electric pile 200, fill electric pile 200 and generally set up in the place of charging station, fill electric pile 200 and include shell 201 and set up power storage device 202 and cold liquid case 203 in shell 201, and cold liquid is stored in cold liquid case 203 and is had the coolant liquid, is equivalent to the cold source. The electric storage device 202 in the charging pile 200 is used for providing electric energy for the charging gun 200, and the cooling liquid tank 203 is used for providing cooling liquid for the charging gun 200 to perform liquid cooling heat dissipation. The charging gun 100 specifically comprises a charging gun head 20 and a liquid cooling cable 10, the charging gun head 20 is electrically connected with the liquid cooling cable 10, a cable 11 is arranged in the liquid cooling cable 10, one end of the cable 11 is connected with the charging gun head 20, and the other end of the cable 11 is connected with an electric storage device 202 of a charging pile 200, so that the electric quantity of the electric storage device 202 in the charging pile 200 can be transmitted to the charging gun 20 through the cable 11 of the liquid cooling cable 10. The charging gun head 20 can be connected to a charging port of an electric automobile to store electric quantity in a storage battery of the electric automobile, so that the electric automobile is charged. Have liquid outlet a and liquid return b on the cold liquid case 203, the coolant liquid in the cold liquid case 203 is carried from liquid outlet a and is got into at liquid cooling cable 10, and the coolant liquid flows the in-process in liquid cooling cable 10 and takes place the heat exchange with cable 11, takes away the heat that cable 11 produced, realizes the liquid cooling heat dissipation to cable 11, and the coolant liquid of accomplishing the heat exchange can get back to the cold liquid case 203 again through liquid return b in, realizes the circulation of coolant liquid.
Referring to fig. 2a, a schematic radial cross-sectional structure (i.e., a cross-sectional structure perpendicular to the radial direction of the liquid-cooling cable 10) of a liquid-cooling cable 10 according to an embodiment of the present application is shown, in which the liquid-cooling cable 10 includes a cable group, an outer protection tube 2, and a liquid-cooling tube group 3, and fig. 2a is a schematic cross-sectional view of the liquid-cooling cable 10, the cable group and the liquid-cooling tube group 3 are both disposed in a pipe of the outer protection tube 2, and the outer protection tube 2 serves to accommodate and protect the cable group and the liquid-cooling tube group 3. The cable group comprises a cable 11 and an insulating layer 12, wherein the insulating layer 12 circumferentially covers the cable 11, and the insulating layer 12 plays an insulating protection role for the cable 11. When the cable 11 has current, the cable 11 can generate joule heat due to the resistance of the cable 11, so that the liquid cooling cable 10 generates larger heat consumption; and when the current transmitted by the cable 11 increases, the heat loss increases accordingly. In order to carry out the liquid cooling heat dissipation to cable 11, liquid cooling nest of tubes 3 includes liquid cooling inner tube 31 and liquid cooling outer tube 32, and liquid cooling outer tube 32 circumference is around outside liquid cooling inner tube 31 for form the liquid cooling passageway M that can supply the cooling liquid circulation between the inner wall of liquid cooling outer tube 32 and the outer wall of liquid cooling inner tube 31. Generally, the cable assembly may further include a ground wire 13, a signal wire 14, and other possible wires, wherein the ground wire 13 is covered with an insulating outer layer to provide insulation protection, and similarly, the signal wire 14 is covered with an insulating outer layer to provide insulation protection. The ground line 13, the signal line 14, and possibly other lines are disposed outside the tube assembly 3. The cable 11 is wrapped by the annular liquid cooling channel M in the circumferential direction (i.e., parallel to the length direction of the cable 11), and the cable 11 and the liquid cooling channel M have a large contact area. When cooling liquid (for example, mixed liquid of water and glycol, silicon oil and the like) is injected into the liquid cooling channel M and is driven to flow in the liquid cooling channel M, heat generated by the cable 11 is transferred into the cooling liquid through the contact between the insulating layer 12 and the liquid cooling pipe group 3, and along with the flow of the cooling liquid in the liquid cooling channel M, the heat is taken away, so that the cooling of the cable 11 is realized. Since each cable 11 is circumferentially wrapped by one liquid cooling passage M, a larger contact area can improve the heat dissipation effect. The outer liquid cooling pipe 32 circumferentially surrounds the inner liquid cooling pipe 31 (here, the length direction of the cable 11 is taken as an axial direction), and a gap exists between the inner wall of the outer liquid cooling pipe 32 and the outer wall of the inner liquid cooling pipe 31, and the gap can form the liquid cooling passage M. The liquid cooling inner tube 31 wraps the insulating layer 12 of the cable 11 in a tight fit mode, the cooling liquid in the liquid cooling channel M is equivalent to a liquid with electric conductivity, and the two layers of protection structures (namely the liquid cooling inner tube 31 and the insulating layer 12) exist between the liquid cooling channel M and the cable 11.
The insulating layer 12, the liquid-cooled inner tube 31, and the liquid-cooled outer tube 32 all extend in the axial direction of the cable 11 (i.e., in the longitudinal direction of the cable 11), and it corresponds to the cable 11 that can be entirely covered with the insulating layer 12, the liquid-cooled inner tube 31, and the liquid-cooled outer tube 32 in the axial direction. The insulating layer 12 and the liquid cooling inner tube 31 are used for performing an insulating protection function on the cable 11 along the axial direction of the cable 11, and the liquid cooling inner tube 31 and the liquid cooling outer tube 32 are used for forming a liquid cooling channel M along the axial direction of the cable 11.
In order to achieve circulation of the cooling liquid, as shown in fig. 2b, an auxiliary duct 15 may be provided between the outer protective tube 2 and the cable set, the auxiliary duct 15 forming an auxiliary passage N through which the cooling liquid can flow, the auxiliary passage N communicating with the liquid cooling passage M. When the liquid cooling channel M is used for liquid feeding and the auxiliary channel N is used for liquid returning, as shown in fig. 1a, an inlet of the liquid cooling channel M is communicated with a liquid outlet a of the liquid cooling tank 203, and the auxiliary channel N is communicated with a liquid returning port b of the liquid cooling tank 203. The cooling liquid cooling circulation path is: the cooling liquid flows out of a liquid outlet a of the cooling liquid tank 203 and then enters the liquid cooling channel M, and the cooling liquid and the cable 11 realize cold heat exchange to take away heat generated by the cable 11 in the process of flowing in the liquid cooling channel M, so that liquid cooling heat dissipation of the cable 11 is realized; then the cooling liquid enters the auxiliary channel N and finally returns to the cold liquid box 203 through the liquid return port b. When the liquid cooling channel M is used for returning liquid and the auxiliary channel N is used for feeding liquid, as shown in fig. 1a, an inlet of the auxiliary channel N is communicated with a liquid outlet a of the liquid cooling tank 203, and the liquid cooling channel M is communicated with a liquid returning port b of the liquid cooling tank 203. The cooling liquid cooling circulation path is: the cooling liquid flows out from the liquid outlet a of the liquid cooling tank 203, then enters the auxiliary channel N, then enters the liquid cooling channel M, and carries out heat exchange with the cable 11 to take away heat generated by the cable 11 in the process that the cooling liquid flows in the liquid cooling channel M, and finally returns to the inside of the liquid cooling tank 203 through the liquid return port b.
It can be seen that the liquid-cooled cable provided in the embodiment of the present application forms the circumferentially-coated liquid-cooled channel M outside the cable 11, so that a larger contact area is provided between the cooling liquid in the liquid-cooled channel M and the cable 11, which is beneficial for the cooling liquid to dissipate heat of each cable 11, and can improve the heat dissipation effect; and the liquid cooling inner tube 31 of liquid cooling nest of tubes 3 is with closely cooperating mode cladding outside the insulating layer 12 of cable 11, increases a structural protection between coolant liquid and cable 11 for liquid cooling inner tube 31 and insulating layer 12 can form two-layer protection architecture between coolant liquid and cable 11, can play good electric property isolation effect, and when the coolant liquid in the liquid cooling passageway M had electric conductivity, reduce cable 11 short circuit risk, can improve liquid cooling cable 10 safety in utilization. With this liquid cooling cable 10 applied to the rifle 100 that charges that fig. 1b shows, because liquid cooling cable 10 has better radiating effect and higher security, can improve the radiating effect of rifle 100 that charges, be favorable to rifle 100 that charges to promote charging power, improve the charging speed. When the charging gun 100 including the liquid cooling cable 10 is applied to the charging device shown in fig. 1a, the electric energy of the charging pile 200 can be transmitted to the charging automobile through the charging gun 100 at a higher speed, so that the charging requirement of the electric automobile on a larger current is met, and meanwhile, a good heat dissipation effect and higher charging safety can be considered.
In some embodiments, the liquid cooling inner tube 31 is a heat shrink tube, when the liquid cooling inner tube 31 is wrapped outside the insulating layer 12 in a close fit manner, the cable 11 is powered on to generate heat, and the liquid cooling inner tube 31 is heated to shrink so as to be more tightly attached to the outer surface of the insulating layer 12, so that the basic insulating protection effect is ensured, the combination tightness between the liquid cooling inner tube 31 and the insulating layer 12 is favorably increased, the structural firmness is provided, the liquid cooling channel M is favorably maintained in a stable state, and a good liquid cooling heat dissipation effect is ensured. Of course, other methods such as gluing, screwing, etc. can be used to improve the bonding tightness between the liquid-cooled inner tube 31 and the insulating layer 12, which will not be described herein.
Generally, as shown in fig. 3a, the cable set may include a first cable 11a, a second cable 11b, a first insulating layer 12a, and a second insulating layer 12b, the first cable 11a being used for connecting a positive pole, and the second cable 11b being used for connecting a negative pole. The first insulating layer 12a circumferentially covers the first cable 11a, and the second insulating layer 12b circumferentially covers the second cable 11 b. For the first cable 11a, the liquid cooling tube set 3 includes a first liquid cooling inner tube 31a and a first liquid cooling outer tube 32a, the first liquid cooling inner tube 31a is circumferentially wrapped outside the first insulating layer 12a, the first liquid cooling outer tube 32a circumferentially surrounds the first liquid cooling inner tube 31a, so that a first liquid cooling channel M2 for circulation of cooling liquid is formed between an inner wall of the first liquid cooling outer tube 32a and an outer wall of the first liquid cooling inner tube 31a, the first liquid cooling channel M2 is circumferentially wrapped outside the first cable 11a, and the first cable 11a and the first liquid cooling channel M2 have a large contact area. For the second cable 11b, the liquid cooling tube set 3 further includes a second liquid cooling inner tube 31b and a second liquid cooling outer tube 32b, the second liquid cooling inner tube 31b is circumferentially wrapped outside the second insulating layer 12b, the second liquid cooling outer tube 32b circumferentially surrounds the second liquid cooling inner tube 31b, so that a second liquid cooling channel M2 for cooling liquid to flow is formed between the inner wall of the second liquid cooling outer tube 32b and the outer wall of the second liquid cooling inner tube 31b, the second liquid cooling channel M2 is circumferentially wrapped outside the second cable 11b, and the second cable 11b and the second liquid cooling channel M2 have a large contact area.
As shown in fig. 3a, when the two cables 11 (the first cable 11a and the second cable 11b) are cooled and radiated by circulating liquid. The first liquid cooling passage M1 may be set for liquid inlet and the second liquid cooling passage M2 for liquid return, and of course, the first liquid cooling passage M1 communicates with the second liquid cooling passage M2. As shown in fig. 1a, the inlet of the first liquid cooling passage M1 is communicated with the liquid outlet a of the liquid cooling tank 203, and the second liquid cooling passage M2 is communicated with the liquid return port b of the liquid cooling tank 203. The cooling liquid cooling circulation path is: the cooling liquid flows out of a liquid outlet a of the cooling liquid tank 203 and then firstly enters the first liquid cooling channel M1, and the cooling liquid and the first cable 11a realize cold heat exchange in the flowing process of the cooling liquid in the first liquid cooling channel M1 to take away heat generated by the first cable 11a, so that liquid cooling heat dissipation of the first cable 11a is realized; then the cooling liquid enters the second liquid cooling channel M2, the cooling liquid and the second cable 11b realize cold heat exchange in the process of flowing in the second liquid cooling channel M2 to take away heat generated by the second cable 11b, the second cable 11b is realized, and finally the cooling liquid returns to the cooling liquid tank 203 through the liquid return port b. The first liquid cooling passage M1 may be set for returning liquid and the second liquid cooling passage M2 for feeding liquid, and of course, the first liquid cooling passage M1 communicates with the second liquid cooling passage M2. As shown in fig. 1a, the inlet of the first liquid cooling passage M1 is communicated with the liquid return port b of the liquid cooling tank 203, and the second liquid cooling passage M2 is communicated with the liquid outlet port a of the liquid cooling tank 203. The cooling liquid cooling circulation path is: the cooling liquid flows out of the liquid outlet a of the cooling liquid tank 203 and then enters the second cooling liquid channel M2, and the cooling liquid and the second cable 11b realize cold heat exchange in the process of flowing in the second cooling liquid channel M2 to take away heat generated by the second cable 11b, so that liquid cooling heat dissipation of the second cable 11b is realized; then the cooling liquid enters the first liquid cooling channel M1, and the cooling liquid and the first cable 11a realize cold heat exchange in the process of flowing in the first liquid cooling channel M1 to take away the heat generated by the first cable 11a, so as to realize the first cable 11a, and finally the cooling liquid returns to the inside of the cooling liquid tank 203 through the liquid return port b.
It should be understood that, when the cable assembly includes three or more cables 11 and the insulating layers 12 respectively covering the three cables 11, taking the first cable 11a, the second cable 11b and the third cable 11c shown in fig. 3b as an example, the first cable 11a is correspondingly covered by the first insulating layer 12a on the outer periphery, and the second cable 11b is correspondingly covered by the second insulating layer 12b on the outer periphery. For the first cable 11a, the liquid cooling tube set 3 includes a first liquid cooling inner tube 31a and a first liquid cooling outer tube 32a, the first liquid cooling inner tube 31a is circumferentially wrapped outside the first insulating layer 12a, the first liquid cooling outer tube 32a circumferentially surrounds the first liquid cooling inner tube 31a, so that a first liquid cooling channel M2 for circulation of cooling liquid is formed between an inner wall of the first liquid cooling outer tube 32a and an outer wall of the first liquid cooling inner tube 31a, the first liquid cooling channel M2 is circumferentially wrapped outside the first cable 11a, and the first cable 11a and the first liquid cooling channel M2 have a large contact area. For the second cable 11b, the liquid cooling tube set 3 further includes a second liquid cooling inner tube 31b and a second liquid cooling outer tube 32b, the second liquid cooling inner tube 31b is circumferentially wrapped outside the second insulating layer 12b, the second liquid cooling outer tube 32b circumferentially surrounds the second liquid cooling inner tube 31b, so that a second liquid cooling channel M2 for cooling liquid to flow is formed between the inner wall of the second liquid cooling outer tube 32b and the outer wall of the second liquid cooling inner tube 31b, the second liquid cooling channel M2 is circumferentially wrapped outside the second cable 11b, and the second cable 11b and the second liquid cooling channel M2 have a large contact area. For the third cable 11c, the liquid cooling tube set 3 further includes a third liquid cooling inner tube 31c and a second liquid cooling outer tube 32c, the third liquid cooling inner tube 31c is circumferentially wrapped outside the third insulating layer 12c, and the third liquid cooling outer tube 32c circumferentially surrounds the third liquid cooling inner tube 31c, so that a third liquid cooling channel M3 for the circulation of cooling liquid is formed between the inner wall of the third liquid cooling outer tube 32c and the outer wall of the third liquid cooling inner tube 31c, the third liquid cooling channel M3 is circumferentially wrapped outside the third cable 11c, and the third cable 11c and the third liquid cooling channel M3 have a large contact area.
When the liquid-cooling cable 10 shown in fig. 3b is used to circulate liquid-cooling, two liquid-cooling passages M of two cables 11 can be set for liquid-feeding (for example, a first liquid-cooling passage M1 and a second liquid-cooling passage M2), and the other liquid-cooling passage M corresponding to the cable 11 can be set for liquid-returning (for example, a third liquid-cooling passage M3). Alternatively, two liquid-cooling passages M of two of the cables 11 may be set for returning liquid (for example, the first liquid-cooling passage M1 and the second liquid-cooling passage M2), and the liquid-cooling passage M of the other cable 11 may be set for entering liquid (for example, the third liquid-cooling passage M3). It should be understood that the number of the cables 11 may also be four, five or more, and when each cable 11 corresponds to one liquid cooling channel M, the liquid cooling channel M for returning liquid and the liquid cooling channel M for feeding liquid can be used for circulating the cooling liquid.
Alternatively, as shown in fig. 4, in the case where the cable assembly includes two cables 11, if the coolant in all the liquid cooling passages M flows in the same direction, an auxiliary passage 15 may be provided between the outer protection pipe 2 and the cable assembly in order to circulate the coolant, and the auxiliary passage 15 may form an auxiliary passage N through which the coolant can flow, and the auxiliary passage N communicates with all the liquid inlet passages M.
Referring to fig. 1a and 4 together, when all the liquid cooling channels M are set for liquid feeding and the auxiliary channel N can be used for liquid returning, the liquid cooling cable 10 is applied to a charging device; the inlets of all the liquid inlet channels M are communicated with the liquid outlet a of the cold liquid box 203, and the outlets of the auxiliary channels N are communicated with the liquid return port b of the cold liquid box 203. The cooling liquid cooling circulation path is: the cooling liquid flows out of the liquid outlet a of the cooling liquid tank 203 and simultaneously enters the liquid inlet channels M of the cables 11, and the cables 11 corresponding to the liquid inlet channels M realize cold heat exchange to take away heat generated by the cables 11 in the process that the cooling liquid flows in the liquid inlet channels M, so that the liquid cooling heat dissipation of the cables 11 is realized; then the cooling liquid in each liquid inlet channel M enters the auxiliary channel N together and returns to the cold liquid box 203 through the liquid return port b. When all the liquid cooling channels M are set for returning liquid, the auxiliary channel N can be used for feeding liquid. The inlets of all the liquid inlet channels M are communicated with the liquid return port b of the cold liquid tank 203, and the outlets of the auxiliary channels N are communicated with the liquid outlet port a of the cold liquid tank 203. The cooling liquid cooling circulation path is: the cooling liquid flows out of the liquid outlet a of the cooling liquid tank 203 and then enters the auxiliary channel N, then enters the liquid inlet channels M of the cables 11, the cooling liquid flows in the liquid inlet channels M, the cables 11 corresponding to the liquid inlet channels M realize cold heat exchange to take away heat generated by the cables 11, the liquid cooling heat dissipation of the cables 11 is realized, and finally the cooling liquid returns to the cooling liquid tank 203 through the liquid return port b.
In order to maintain the gap between the liquid cooling inner tube 31 and the liquid cooling outer tube 32 (the gap is used for forming the liquid cooling passage M), and prevent the interval between the liquid cooling inner tube 31 and the liquid cooling outer tube 32 from being uneven in the circumferential range of the cable 11 (which may cause uneven distribution of the cooling liquid in the circumferential range of the cable 11 and affect the heat dissipation effect), as shown in fig. 5a, a flexible supporting member 16 is further disposed between the liquid cooling inner tube 31 and the liquid cooling outer tube 32, and the flexible supporting member 16 has a hollow structure, which can allow the cooling liquid to circulate. The structure shown in fig. 5b is enlarged from a part a in fig. 5a, and in combination with the three-dimensional structure of the flexible supporting member 16 shown in fig. 5c, the flexible supporting member 16 may specifically include a supporting body 161 and a plurality of supporting portions 162 formed on the inner surface and the outer surface of the supporting body 161, and a gap is formed between any two adjacent supporting portions 162, and the gap can communicate with the hollow structure. Wherein, support body 161 and liquid cooling inner tube 31 between have partly hollow out construction, support body 161 and liquid cooling outer tube 32 between have partly hollow out construction, these two parts hollow out construction can supply the cooling liquid circulation, such structural distribution also is favorable to the interval between liquid cooling inner tube 31 and the liquid cooling outer tube 32 to remain stable, the relative liquid cooling outer tube 32 skew of liquid cooling inner tube 31 can not appear and leads to the uneven condition of cooling liquid distribution. Fig. 5d shows a structure in which a plurality of supporting portions 162 are formed only on the surface of the supporting body 161 facing the liquid-cooling inner tube 31, and this structure can also keep the cooling liquid to form a uniformly distributed hollow structure on the circumferential surface of the cable 11 for the cooling liquid to flow.
Referring to fig. 6 a-6 b, the flexible supporting member 16 may be formed in other manners.
As shown in fig. 6a, the flexible supporting member 16 may be disposed on the outer wall of the liquid-cooled inner tube 31 facing the liquid-cooled outer tube 32, and the number of the flexible supporting members 16 is plural, and the liquid-cooled inner tube 31 is a circular array. The flexible supporting member 16 may be formed by providing protrusions on the outer wall of the liquid-cooling inner tube 31 facing the liquid-cooling outer tube 32, and the distance between any two protrusions is equivalent to the above hollow structure; or, a groove may be formed on the inner wall of the liquid cooling inner tube 31 facing the liquid cooling outer tube 32, and the flexible supporting member 16 is formed between any two grooves, where the groove is equivalent to the above hollow structure. Here, the flexible support 16 and the liquid-cooled inner tube 31 may be an integral structure.
As shown in fig. 6b, the flexible supporting members 16 may be disposed on the inner wall of the liquid-cooled outer tube 32 facing the liquid-cooled inner tube 31, and the number of the flexible supporting members 16 is plural, and the liquid-cooled inner tube 31 is a circular array. The flexible supporting member 16 may be formed by providing protrusions on the inner wall of the liquid-cooling outer tube 32 facing the liquid-cooling inner tube 31, and the distance between any two protrusions is equivalent to the above hollow structure; or, a groove may be formed on the inner wall of the liquid cooling outer tube 32 facing the liquid cooling inner tube 31, and the flexible supporting member 16 is formed between any two grooves, where the groove is equivalent to the above hollow structure. Here, the flexible support 16 and the liquid-cooled outer tube 32 may be of an integral structure.
As shown in fig. 6c, the flexible supporting members 16 may be disposed on the outer wall of the liquid-cooling inner tube 31 facing the liquid-cooling outer tube 32 and the inner wall of the liquid-cooling outer tube 32 facing the liquid-cooling inner tube 31, where the number of the flexible supporting members 16 on the outer wall of the liquid-cooling inner tube 31 facing the liquid-cooling outer tube 32 is plural, and the liquid-cooling inner tube 31 is used as a circular array; the number of the flexible supporting members 16 on the inner wall of the liquid cooling outer tube 32 facing the liquid cooling inner tube 31 is also plural, and the liquid cooling inner tube 31 is used as a circular array. In this structure, the number of the flexible supporting members 16 on the liquid cooling inner tube 31 is the same as that of the flexible supporting members 16 on the liquid cooling outer tube 32, and the two flexible supporting members 16 corresponding to each other are radially distributed along the liquid cooling inner tube 31.
As shown in fig. 6d, the flexible supporting member 16 is also disposed on the outer wall of the liquid-cooled inner tube 31 facing the liquid-cooled outer tube 32 and the inner wall of the liquid-cooled outer tube 32 facing the liquid-cooled inner tube 31; the number of the flexible supporting pieces 16 facing the outer wall of the liquid cooling outer pipe 32 of the liquid cooling inner pipe 31 is multiple, and the liquid cooling inner pipe 31 is used as a circular array; the number of the flexible supporting members 16 on the inner wall of the liquid cooling outer tube 32 facing the liquid cooling inner tube 31 is also plural, and the liquid cooling inner tube 31 is used as a circular array. In this configuration, the number of flexible supports 16 on the inner liquid-cooled tube 31 is the same as the number of flexible supports 16 on the outer liquid-cooled tube 32. The difference from the structure shown in fig. 6c is that the flexible support member 16 on the liquid-cooled inner tube 31 and the flexible support member 16 on the liquid-cooled outer tube 32 are angularly displaced in the circumferential direction of the liquid-cooled inner tube 31.
It should be understood that the structure of the flexible support 16 in fig. 6c and 6d is equivalent to the combination of the solutions shown in fig. 6a and 6b, and specific description of the structure of the flexible support 16 can refer to fig. 6a and 6b, which are not described herein again.
Fig. 7 shows another possible embodiment of the flexible supporting members 16, wherein a plurality of flexible supporting members 16 are disposed between the inner liquid-cooling pipe 31 and the outer liquid-cooling pipe 32, one end of each flexible supporting member 16 is fixed to the outer wall of the inner liquid-cooling pipe 31 facing the outer liquid-cooling pipe 32, and the other end is fixed to the inner wall of the outer liquid-cooling pipe 32 facing the inner liquid-cooling pipe 31, meaning that a gap corresponding to the above-mentioned hollowed-out structure is formed between two adjacent flexible supporting members 16. Of course, the liquid-cooling inner tube 31, the liquid-cooling outer tube 32 and the plurality of flexible supporting members 16 may be formed integrally, and the liquid-cooling tube set 3 and the plurality of flexible supporting members 16 are equivalent to a pipe having an axial hollow structure on a pipe wall.
It should be noted that, the flexible supporting members 16 illustrated in fig. 5a and 6a to 7 all extend along the axial direction of the cable 11, and along the radial direction of the liquid-cooled inner tube 31, the cross-sectional shape of the flexible supporting member 16 is not limited, and may also be a trapezoid, a cone, or other polygonal structure, which is not described herein again.
On the basis of the flexible support 16 shown in fig. 5c, fig. 8 shows a flexible support 16 in which the support 162 is cylindrical. It should be understood that the flexible support 16 illustrated in fig. 8 may also be transformed into the structure of the flexible support 16 illustrated in fig. 6a to 7 similarly to fig. 5c, except for the shape of the support portion 162, and therefore, a detailed description thereof will not be provided herein.
Fig. 9a shows another flexible supporting member 16, the flexible supporting member 16 is spiral and is disposed around the outer wall of the liquid-cooling inner tube 31 facing the liquid-cooling outer tube 32, and the flexible supporting member 16 is formed with a spiral hollow structure for allowing the cooling liquid to spirally circulate between the liquid-cooling outer tube 32 and the liquid-cooling inner tube 31. The structure after removing part of the outer liquid-cooled tube 32 can be as shown in fig. 9b, and the outer periphery of the flexible support 16 can contact the inner wall of the outer liquid-cooled tube 32. Of course, the flexible support member 16 of this structure may be formed integrally with the liquid-cooled outer tube 32 and the liquid-cooled inner tube 31.
It should be understood that the flexible supporting member 16 may have other various implementations besides the above-mentioned examples, and it is not illustrated here, as long as the flexible supporting member 16 can maintain a sufficient gap between the outer wall of the liquid-cooled inner tube 31 and the inner wall of the liquid-cooled outer tube 32 for the cooling liquid to flow through, and ensure that the cooling liquid can be uniformly distributed on the outer wall of the liquid-cooled inner tube 31 along the circumferential direction of the cable 11.
In some embodiments, the cable assembly includes a first cable 11a, a second cable 11b, a first insulating layer 12a, and a second insulating layer 12b, wherein the first insulating layer 12a circumferentially covers the first cable 11a, and the second insulating layer 12b circumferentially covers the second cable 11 b. For the first cable 11a, the liquid cooling tube set 3 includes a first liquid cooling inner tube 31a, and the first liquid cooling inner tube 31a is circumferentially wrapped outside the first insulating layer 12 a. For the second cable 11b, the liquid cooling tube set 3 further includes a second liquid cooling inner tube 31b, and the second liquid cooling inner tube 31b is circumferentially wrapped outside the second insulating layer 12 b. The liquid cooling tube set 3 further includes an outer liquid cooling tube 32 circumferentially surrounding the first inner liquid cooling tube 31a and the second inner liquid cooling tube 31b, and a liquid cooling passage is formed between an inner wall of the outer liquid cooling tube 32 and an outer wall of the first inner liquid cooling tube 31a and an outer wall of the second inner liquid cooling tube 31 b. The two cables 11 share a common liquid-cooled outer tube 32, and the liquid-cooled passage is equivalent to being able to enclose the first cable 11a and the second cable 11 b. In the liquid-cooled cable 10 of the configuration of fig. 10, the auxiliary pipe 15 needs to be separately provided, and the auxiliary pipe 15 forms the auxiliary passage N. So as to realize the circulation flow of the cooling liquid. When the liquid cooling channel M is used for liquid inlet, the auxiliary channel N can be used for liquid return; when the liquid cooling channel M is used for returning liquid, the auxiliary channel N can be used for feeding liquid. The circulation of the cooling liquid between the liquid cooling channel M, the auxiliary channel N and the liquid cooling box 203 can refer to the liquid cooling cable 10 shown in fig. 2b, and will not be described herein. Further, other structures such as the ground line 13 and the signal line 14 need to be provided outside the liquid-cooled outer tube 32.
The flexible support 16 in the liquid-cooled cable 10 shown in fig. 10 can be as shown in fig. 11 (two cables 11 are illustrated), the flexible support 16 being similar in construction to the flexible support in fig. 5a, except that the flexible support 16 is shared by two liquid-cooled inner tubes 31, the flexible support 16 conforming to the inner wall of the liquid-cooled outer tube 32. Of course, the flexible support member 16 may have other configurations as described in the above embodiments, and only needs to be adapted to the liquid-cooled cable 10 shown in fig. 10, so as to satisfy the cooling liquid circulation and channel support effects.
Taking the liquid cooling cable 10 shown in fig. 10 as an example, when the number of the cables 11 is greater than or equal to three, taking three cables 11 as an example, as shown in fig. 12a, two of the cables 11 may correspondingly share one liquid cooling channel M, and the liquid cooling channel M is equivalent to be simultaneously wrapped around the two cables 11 to cool and dissipate heat for the two cables 11; the other cable 11 is subjected to independent liquid cooling heat dissipation through the corresponding liquid cooling channel M'. Wherein an auxiliary conduit 15 may be provided between the outer protective tube 2 and the cable 11, the auxiliary conduit 15 being adapted to form an auxiliary channel N (not shown here) when the flow direction of the cooling liquid in the liquid cooling channels M and M' is identical. If the liquid cooling channel M and the liquid cooling channel M' are set to be used for liquid inlet, the auxiliary channel N is set to be used for liquid return; if the liquid cooling passages M and M' are set for returning liquid, the auxiliary passage N is set for feeding liquid.
Alternatively, as shown in fig. 12b, the liquid cooling channel M may be set for liquid inlet, and the liquid cooling channel M' may be set for liquid return; alternatively, the liquid cooling passage M is set for returning liquid, and the liquid cooling passage M' is set for returning liquid, and the flow manner of the cooling liquid may refer to the description of the above embodiments, and will not be described here again. In addition, the flexible support 16 in the liquid-cooled cable 10 shown in fig. 12a and 12b can refer to the embodiments of the previous embodiments, and will not be described herein.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (12)
1. A liquid cooled cable, comprising: the cable group, the outer protection tube and the liquid cooling tube group;
the cable group comprises a cable and an insulating layer, and the insulating layer is coated outside the cable; the outer protection pipe circumferentially surrounds the cable group; the liquid cooling pipe set is arranged between the outer protection pipe and the cable set and comprises a liquid cooling outer pipe and a liquid cooling inner pipe, and the liquid cooling inner pipe is circumferentially coated outside the insulating layer; the liquid cooling outer tube circumferentially surrounds the liquid cooling inner tube, and a liquid cooling channel for circulating cooling liquid is formed between the inner wall of the liquid cooling outer tube and the outer wall of the liquid cooling inner tube.
2. The liquid-cooled cable of claim 1, wherein the cable assembly includes a first cable, a second cable, a first insulating layer, and a second insulating layer, the first insulating layer being coated over the first cable, the second insulating layer being coated over the second cable;
the liquid cooling pipe set comprises a first liquid cooling outer pipe, a first liquid cooling inner pipe and a second liquid cooling inner pipe; the first liquid cooling inner pipe is circumferentially coated outside the first insulating layer, the first liquid cooling outer pipe circumferentially surrounds the first liquid cooling inner pipe, and a first liquid cooling channel is formed between the inner wall of the first liquid cooling outer pipe and the outer wall of the first liquid cooling inner pipe;
the second liquid cooling inner pipe circumferentially wraps the second insulating layer, the second liquid cooling outer pipe circumferentially surrounds the second liquid cooling inner pipe, and a second liquid cooling channel is formed between the inner wall of the second liquid cooling outer pipe and the second liquid cooling inner pipe.
3. The liquid-cooled cable of claim 1, wherein the cable assembly includes a first cable, a second cable, a first insulating layer, and a second insulating layer, the first insulating layer being coated over the first cable, the second insulating layer being coated over the second cable;
the liquid cooling pipe set comprises a liquid cooling outer pipe, a first liquid cooling inner pipe and a second liquid cooling inner pipe;
first liquid cooling inner tube circumference cladding in outside the first insulating layer, second liquid cooling inner tube circumference cladding in outside the second insulating layer, liquid cooling outer tube circumference around in first liquid cooling inner tube with outside the second liquid cooling inner tube, the inner wall of liquid cooling outer tube with the outer wall of first liquid cooling inner tube form the liquid cooling passageway between the outer wall of second liquid cooling inner tube.
4. The liquid-cooled cable of any of claims 1-3, further comprising an auxiliary liquid-cooled tube disposed between the cable set and the outer protective tube, the auxiliary liquid-cooled tube forming an auxiliary channel in communication with the liquid-cooled channel.
5. The liquid cooling cable of any one of claims 1-4, wherein the number of the liquid cooling channels is at least two, at least one of the liquid cooling channels is used for liquid inlet, and at least one of the liquid cooling channels is used for liquid return.
6. The liquid-cooled cable of any one of claims 1-5, wherein the liquid-cooled inner tube is a heat shrink tube.
7. The liquid-cooled cable of any one of claims 1-6, further comprising a flexible support member disposed within the liquid-cooled channel, the flexible support member having a hollowed-out structure for circulation of the cooling liquid.
8. The liquid-cooled cable of claim 7, wherein the flexible support is secured to an inner wall of the outer liquid-cooled tube; and/or the flexible supporting piece is fixed on the outer wall of the liquid cooling inner pipe.
9. The liquid-cooled cable of claim 7 or 8, wherein the flexible support comprises a support body and a plurality of supports formed on a surface of the support body;
the supporting body surrounds the liquid cooling inner pipe, and the plurality of supporting parts form the hollow structure.
10. The liquid-cooled cable of claim 7 or 8, wherein the flexible support member is helically wrapped around the liquid-cooled inner tube to form a helically hollowed-out structure.
11. A charging gun comprising a charging gun head and a liquid-cooled cable according to any one of claims 1 to 10, the charging gun head being electrically connected to the cable in the liquid-cooled cable.
12. A charging device comprising a charging post and the charging gun of claim 11, wherein the charging post comprises an electrical interface and a cold liquid tank, and the cold liquid tank stores a cooling liquid;
the liquid cooling cable is kept away from the one end of rifle that charges is connected the electrical interface, the cold liquid case be used for to the liquid cooling passageway provides the coolant liquid and makes the coolant liquid is in the circulation in the liquid cooling passageway.
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| CN202111562971.1A CN114464363A (en) | 2021-12-20 | 2021-12-20 | Liquid cooling cable, charging gun and charging equipment |
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| CN202111562971.1A CN114464363A (en) | 2021-12-20 | 2021-12-20 | Liquid cooling cable, charging gun and charging equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117238570A (en) * | 2023-09-18 | 2023-12-15 | 安徽远征电缆科技有限公司 | High-temperature-resistant high-voltage cable for new energy automobile |
| WO2024032773A1 (en) * | 2022-08-12 | 2024-02-15 | 长春捷翼汽车科技股份有限公司 | Liquid-cooled cable |
| CN117238570B (en) * | 2023-09-18 | 2024-06-07 | 安徽远征传导科技股份有限公司 | High-temperature-resistant high-voltage cable for new energy automobile |
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| CN213988373U (en) * | 2020-09-21 | 2021-08-17 | 江苏春草高温线缆有限公司 | High-temperature-resistant control cable |
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2021
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| JPH07211156A (en) * | 1994-01-19 | 1995-08-11 | Furukawa Electric Co Ltd:The | Power cable line |
| CN208385068U (en) * | 2018-08-09 | 2019-01-15 | 洛阳一缆电器有限公司 | A kind of adjacent layer reversed cable |
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| EP3770925A1 (en) * | 2019-07-25 | 2021-01-27 | ABB Schweiz AG | Heavy-current charging cable for charging an electric vehicle |
| CN213988373U (en) * | 2020-09-21 | 2021-08-17 | 江苏春草高温线缆有限公司 | High-temperature-resistant control cable |
| CN112201397A (en) * | 2020-10-30 | 2021-01-08 | 远东电缆有限公司 | Liquid-cooled high-power charging cable for smart energy new energy automobile and production process |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024032773A1 (en) * | 2022-08-12 | 2024-02-15 | 长春捷翼汽车科技股份有限公司 | Liquid-cooled cable |
| CN117238570A (en) * | 2023-09-18 | 2023-12-15 | 安徽远征电缆科技有限公司 | High-temperature-resistant high-voltage cable for new energy automobile |
| CN117238570B (en) * | 2023-09-18 | 2024-06-07 | 安徽远征传导科技股份有限公司 | High-temperature-resistant high-voltage cable for new energy automobile |
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