CN114822926A - Small-wire-diameter high-power charging cable structure and charging device - Google Patents
Small-wire-diameter high-power charging cable structure and charging device Download PDFInfo
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- CN114822926A CN114822926A CN202210445850.7A CN202210445850A CN114822926A CN 114822926 A CN114822926 A CN 114822926A CN 202210445850 A CN202210445850 A CN 202210445850A CN 114822926 A CN114822926 A CN 114822926A
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- 239000007788 liquid Substances 0.000 claims abstract description 120
- 239000004020 conductor Substances 0.000 claims abstract description 96
- 238000001816 cooling Methods 0.000 claims abstract description 45
- 239000000110 cooling liquid Substances 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims description 7
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 208000012260 Accidental injury Diseases 0.000 description 3
- 239000002826 coolant Substances 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 230000009172 bursting Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000006748 scratching Methods 0.000 description 2
- 230000002393 scratching effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
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- 238000007906 compression Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
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- 238000012986 modification 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
- H01B7/02—Disposition of insulation
-
- 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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- 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
- B60L53/30—Constructional details of charging stations
- B60L53/302—Cooling of charging equipment
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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
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Insulated Conductors (AREA)
Abstract
The invention discloses a small-wire-diameter high-power charging cable structure and a charging device, comprising a conductor; and the insulating sheath is internally provided with a cavity for accommodating the conductor, the insulating sheath is provided with an inner wall facing the cavity and an outer wall departing from the cavity, a liquid flow channel for cooling liquid to flow is formed between the inner wall and the outer wall by the insulating sheath, the extending directions of the conductor, the insulating sheath and the liquid flow channel are parallel, and the conductor is in contact with the inner wall of the insulating sheath so as to take away the heat on the surface of the conductor through the flow of the cooling liquid. The invention provides a small-wire-diameter high-power charging cable structure and a charging device, which solve the technical problem that the conventional liquid cooling cable is large in wire diameter.
Description
Technical Field
The invention relates to the field of charging cables, in particular to a small-wire-diameter high-power charging cable structure and a charging device.
Background
In recent years, with the rapid development of new energy technologies, electric vehicles enter the household and commercial fields in large quantities, users have higher and higher requirements on battery capacity, driving range and charging speed, and high-power charging technologies are gradually developed. High-power charging pile's voltage is high, the electric current is big, can produce a large amount of heats at the in-process of using, and power is big more moreover, and the cable generates heat more easily, and the cable after generating heat has the risk of causing the conflagration.
In order to solve the problem of temperature rise of the cable in the charging process, new products such as a liquid cooling cable, a liquid cooling charging gun, a liquid cooling socket and the like are gradually generated on the market, namely, a channel for cooling liquid to circulate is formed inside the cable so as to cool the conductor. But the line diameter of current liquid cooling cable is great, can't satisfy the demand of product smallness.
Disclosure of Invention
The invention mainly aims to provide a small-wire-diameter high-power charging cable structure and a charging device, and aims to solve the technical problem that the conventional liquid cooling cable is large in wire diameter.
In order to achieve the above object, an embodiment of the present invention provides a small-wire-diameter high-power charging cable structure, where the small-wire-diameter high-power charging cable structure includes:
a conductor; and
the insulating sheath is provided with an inner wall facing the cavity and an outer wall facing away from the cavity, a liquid flow channel for cooling liquid to flow is formed between the inner wall and the outer wall, the extending directions of the conductor, the insulating sheath and the liquid flow channel are parallel, and the conductor is in contact with the inner wall of the insulating sheath so as to take away heat on the surface of the conductor through the flow of the cooling liquid.
Optionally, in an embodiment of the present invention, the liquid flow channel includes a liquid inlet channel and a liquid outlet channel, the liquid inlet channel and the liquid outlet channel are respectively and independently disposed between the inner wall and the outer wall of the insulating sheath, and the liquid inlet channel and the liquid outlet channel are connected by an external pipeline to form a cooling loop, where at least one of the conductors is correspondingly disposed in the liquid inlet channel and the liquid outlet channel, respectively.
Optionally, in an embodiment of the present invention, the liquid inlet channel and the liquid outlet channel are symmetrically disposed about the cavity.
Optionally, in an embodiment of the present invention, cross sections of the liquid inlet channel and the liquid outlet channel are respectively arc-shaped.
Optionally, in an embodiment of the present invention, the insulating sheath is made of an explosion-proof material.
Optionally, in an embodiment of the present invention, an outer surface of the conductor is coated with an insulating layer.
Optionally, in an embodiment of the present invention, the small-wire-diameter high-power charging cable structure further includes a ground wire disposed in the cavity, and the ground wire is in contact with an inner wall of the insulating sheath.
Optionally, in an embodiment of the present invention, the ground line includes a plurality of sub-lines independently disposed, and the plurality of sub-lines are respectively and independently disposed in the cavity.
Optionally, in an embodiment of the present invention, the small-wire-diameter high-power charging cable structure further includes other wire cores disposed in the cavity, the other wire cores are provided with a plurality of wire cores, at least one of the other wire cores is in contact with an inner wall of the insulating sheath, and the ground wire and the other wire cores are disposed on opposite sides of the conductor.
In order to achieve the above object, an embodiment of the present invention provides a charging device, including the small-wire-diameter high-power charging cable structure according to any one of the above embodiments.
Compared with the prior art, in one technical scheme provided by the invention, the conductor is used for being electrically connected with external charging equipment to conduct a circuit, and after the circuit is conducted, the conductor can generate a large amount of heat. The insulating sheath is arranged, so that on one hand, the conductor can be coated by utilizing the cavity of the insulating sheath, the conductor is effectively protected, the influence on normal use caused by conductor scratching is avoided, and meanwhile, the accidental injury of personnel caused by conductor leakage can be prevented; on the other hand, a liquid flow channel is arranged between the inner wall and the outer wall of the insulating sheath, the liquid flow channel is filled with cooling liquid, and the cooling liquid can flow in the liquid flow channel. And the surface of conductor is with the inner wall contact of insulating sheath, so when the liquid cooling cable is in the use, through the flow of coolant liquid in liquid flow channel, can take away the heat on conductor surface to in time dispel the heat to the conductor, make the temperature of conductor be in safety range, avoid the high temperature of conductor and the potential safety hazard appears, improve the radiating effect of liquid cooling cable. In addition, according to the technical scheme provided by the invention, the arrangement of the liquid cooling pipe is cancelled, the liquid outlet channel is designed by utilizing the structure of the insulating sheath between the inner wall and the outer wall, the full utilization of the insulating sheath structure is realized, the integral weight of the liquid cooling cable is reduced, the integral space effect is improved, the wire diameter of the liquid cooling cable is reduced, and the design requirements of product compactness and miniaturization are met.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of a small-wire-diameter high-power charging cable structure according to the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | |
200 | Insulating |
| 210 | |
220 | |
| 221 | |
222 | |
| 300 | |
400 | |
| 500 | Insulating layer |
The implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be obtained by a person skilled in the art based on the embodiments of the present invention without any inventive step belong to the scope of the embodiments of the present invention.
It should be noted that all directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, descriptions such as references to "first", "second", and the like in the embodiments of the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating a number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the embodiments of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "connected", "fixed", and the like are to be understood broadly, for example, "fixed" may be a fixed connection, a detachable connection, or an integral body; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of the technical solutions should not be considered to exist, and is not within the protection scope of the embodiments of the present invention.
In the use process of the electric automobile, the requirement of users for quick charging is higher and higher. In order to realize quick high-power charging and avoid overhigh temperature of a cable in the charging process, increasing the wire diameter of the cable is a common choice. However, increasing the wire diameter may cause higher cost, and also may cause an increase in the weight of the cable, which may increase the volume of the charging gun and other accessories, so that the entire charging device becomes more robust and heavier. Therefore, the adoption of a small-wire-diameter and light-weight liquid cooling cable to reduce the temperature of the cable becomes a hot proposal for solving the problem of high-power charging. However, the wire diameter of the existing liquid cooling cable is still larger, and a certain improvement space is provided to further meet the requirement of product miniaturization.
In view of this, embodiments of the present invention provide a small-wire-diameter high-power charging cable structure and a charging device, in which a liquid cooling channel is formed by using a structure between an inner wall and an outer wall of an insulating sheath, a conductor is in contact with the inner wall of the insulating sheath, heat on the surface of the conductor is taken away by using a flow of a cooling liquid between the inner wall and the outer wall of the insulating sheath, so as to dissipate heat in time, and a separate liquid cooling pipe is omitted, thereby further reducing the wire diameter and weight of the liquid cooling cable.
In order to better understand the technical scheme, the technical scheme is described in detail below with reference to the accompanying drawings.
As shown in fig. 1, the small-wire-diameter high-power charging cable structure provided in the embodiment of the present invention includes:
a conductor 100; and
an insulating sheath 200, a cavity 210 for accommodating the conductor 100 is formed inside, the insulating sheath 200 is provided with an inner wall facing the cavity 210 and an outer wall facing away from the cavity 210, the insulating sheath 200 is provided with a flow channel 220 for flowing cooling liquid between the inner wall and the outer wall, the conductor 100, the insulating sheath 200 and the flow channel 220 extend in parallel, and the conductor 100 is in contact with the inner wall of the insulating sheath 200 to take away heat on the surface of the conductor 100 through the flow of the cooling liquid.
In the technical solution adopted in this embodiment, the conductor 100 is used to electrically connect with an external charging device to conduct a circuit, and after the circuit is conducted, the conductor 100 generates a large amount of heat. The insulating sheath 200 is arranged, so that on one hand, the conductor 100 can be coated by utilizing the cavity 210 of the insulating sheath 200, the conductor 100 is effectively protected, the influence on normal use caused by scratching the conductor 100 is avoided, and meanwhile, the accidental injury of personnel caused by electric leakage of the conductor 100 can be prevented; on the other hand, a flow channel 220 is provided between the inner wall and the outer wall of the insulating sheath 200, and the flow channel 220 is filled with a cooling liquid, which can flow in the flow channel 220. And the surface of conductor 100 is with the inner wall contact of insulating sheath 200, so when the liquid cooling cable is in use, through the flow of coolant liquid in flow channel 220, can take away the heat on conductor 100 surface to in time dispel the heat to conductor 100, make the temperature of conductor 100 be in the safety range, avoid the high temperature of conductor 100 and appear the potential safety hazard, improve the radiating effect of liquid cooling cable. In addition, according to the technical scheme provided by the invention, the arrangement of the liquid cooling pipe is omitted, the liquid outlet channel 220 is designed by utilizing the structure of the insulating sheath 200 between the inner wall and the outer wall, the full utilization of the structure of the insulating sheath 200 is realized, the whole weight of the liquid cooling cable is reduced, the whole space effect is improved, the wire diameter of the liquid cooling cable is reduced, and the design requirements of product compactness and miniaturization are met.
Specifically, the small-wire-diameter high-power charging cable structure provided in this embodiment may be applied to a high-power charging device, such as a charging gun or a charging socket, and the small-wire-diameter high-power charging cable structure may include the insulating sheath 200 and the conductor 100.
The conductor 100 is a main line of the small-diameter high-power charging cable structure, and the material thereof may be a conductive material, such as copper, which can be electrically connected to an external charging device to conduct a circuit. The conductor 100 may be a single wire or a plurality of wire bundles, and preferably, a plurality of wire bundles are grouped to form one power conductor 100, so as to ensure that the power conductor 100 has a strong current-carrying capacity. In order to avoid the plurality of conducting wires from being loose when being gathered, the conducting wires can be fixed by the braided layer.
The insulating sheath 200 is coated outside the conductor 100, and it can be understood that the insulating sheath 200 is a hollow structure, i.e. a cavity 210 for accommodating the conductor 100 is formed, and the conductor 100 is arranged in the cavity 210, so that the conductor 100 is conveniently coated by using the cavity 210, and the influence of other parts on normal use due to the scratch of the conductor 100 can be avoided, the protection of the insulating sheath 200 on the conductor 100 is realized, and meanwhile, the accidental injury of personnel caused by the electric leakage of the conductor 100 can be prevented. In order to further reduce the line footpath of liquid cooling cable, the setting of liquid cooling pipe has been eliminated in this embodiment, utilize self structure between the inner wall of insulating sheath 200 and the outer wall to form the liquid cooling passageway, that is to say, set up the liquid cooling passageway between the inner wall and the outer wall of insulating sheath 200, do not additionally occupy other spaces, make full use of the structural part between the inside and outside wall of insulating sheath 200, thereby can reduce the whole weight of liquid cooling cable, improve whole space effect, reduce the line footpath of liquid cooling cable, accord with the product compactness, the design demand of small and exquisite. Moreover, the outer surface of the conductor 100 is in contact with the inner wall of the insulating sheath 200, so that when the cooling liquid flows in the liquid cooling channel, the heat on the surface of the conductor 100 can be effectively taken away, the conductor 100 is timely cooled, and the cooling effect of the liquid cooling cable is improved.
It should be noted that the insulating sheath 200 may be made of an insulating material, may be made of any one of PVC, TPE, TPU and rubber materials, and may be shaped like a cylinder, so as to conveniently form the cavity 210 for accommodating the conductor 100, thereby simplifying the production process, improving the production efficiency, and reducing the production cost. The cooling liquid in this embodiment may be an insulating liquid having a good heat conduction property, and for example, any one of transformer oil, capacitor oil, cable oil, silicone oil, and mineral oil may be used.
Further, referring to fig. 1, in an embodiment of the present invention, the liquid flow channel 220 includes a liquid inlet channel 221 and a liquid outlet channel 222, the liquid inlet channel 221 and the liquid outlet channel 222 are respectively and independently disposed between an inner wall and an outer wall of the insulating sheath 200, the liquid inlet channel 221 and the liquid outlet channel 222 are connected by an external pipeline to form a cooling circuit, wherein the liquid inlet channel 221 and the liquid outlet channel 222 are respectively and correspondingly provided with at least one conductor 100.
In the technical solution adopted in this embodiment, the liquid flow channel 220 may be divided into a liquid inlet channel 221 and a liquid outlet channel 222, the liquid inlet channel 221 and the liquid outlet channel 222 are arranged in parallel, and may be communicated with each other through a connecting device outside the insulating sheath 200, so as to form a circulation loop, and the cooling liquid flows in the circulation loop. The liquid inlet channel 221 and the liquid outlet channel 222 are arranged, so that different conductors 100 can be respectively radiated, local high temperature of the liquid cooling cable caused by the fact that all the conductors 100 are radiated through the liquid inlet channel 221 or the liquid outlet channel 222 is avoided, and radiating uniformity is improved. It should be noted that the number of the conductors 100 may be odd or even, when odd number of the conductors 100 are provided, the number of the conductors 100 which need to be cooled and are correspondingly provided by the liquid inlet channel 221 is a, the number of the conductors 100 which need to be cooled and are correspondingly provided by the liquid outlet channel 222 is B, and at this time, a is one more than B, or a is one less than B; when an even number of conductors 100 are provided, the conductors 100 are evenly distributed between the liquid inlet channel 221 and the liquid outlet channel 222.
It should be noted that, if a plurality of conductors 100 are correspondingly disposed in the liquid inlet channel 221 or the liquid outlet channel 222, the plurality of conductors 100 may respectively contact with the inner wall of the insulating sheath 200; one of the conductors 100 may be in contact with the inner wall of the insulating sheath 200, and the other conductors 100 may be in contact with the conductor 100. That is, the specific contact manner of the plurality of conductors 100 with the inner wall of the insulating sheath 200 is not limited in this embodiment.
Further, in an embodiment of the present invention, the liquid inlet channel 221 and the liquid outlet channel 222 are symmetrically disposed about the cavity 210.
In the technical scheme adopted in this embodiment, in order to further improve the heat dissipation uniformity of the liquid cooling cable, the liquid inlet channel 221 and the liquid outlet channel 222 are symmetrically arranged with respect to the cavity 210, that is, the area size, the position and the shape of the liquid inlet channel 221 and the liquid outlet channel 222 are the same, so that each position inside the liquid cooling cable can obtain the same cooling effect provided by the cooling liquid, thereby ensuring the heat dissipation uniformity of the outer surface of the conductor 100 and avoiding the influence of local high temperature on normal use.
Further, in an embodiment of the present invention, the cross-sections of the liquid inlet channel 221 and the liquid outlet channel 222 are arc-shaped.
In the technical scheme adopted in this embodiment, the cross sections of the liquid inlet channel 221 and the liquid outlet channel 222 are respectively arc-shaped, so that the structure between the inner wall and the outer wall of the insulating sheath 200 can be fully utilized, the cross sections of the liquid inlet channel 221 and the liquid outlet channel 222 are larger, more cooling liquid can be filled, the cooling capacity of the cooling liquid is more, more heat on the surface of the conductor 100 can be taken away in the flowing process, and the heat dissipation effect is improved.
Further, in an embodiment of the present invention, the insulating sheath 200 is made of an explosion-proof material.
In the technical scheme adopted by the embodiment, when the liquid cooling cable is electrified for use, the insulating sheath 200 made of the explosion-proof material can improve the compression resistance of the insulating sheath 200, so that the insulating sheath 200 can bear the pressure of the internal cooling liquid generated due to high temperature, the insulating sheath 200 is prevented from bursting under the conditions of high temperature and high pressure, the use safety is improved, and the service life of the liquid cooling cable is prolonged. In this embodiment, the explosion-proof material may be cross-linked PE (polyethylene), which has good insulating, heat-resistant, and chemical-resistant properties, and in addition, the hardness, rigidity, wear-resistant, and impact-resistant properties are all excellent, and can effectively bear the pressure of the cooling fluid in the insulating sheath 200 due to high temperature, and prevent the insulating sheath 200 from bursting.
Further, in an embodiment of the present invention, the outer surface of the conductor 100 is coated with an insulating layer 500.
In the technical scheme adopted in this embodiment, through the insulating layer 500 that sets up at the surface of conductor 100, can prevent that unexpected short circuit from taking place when conductor 100 switches on with external charging equipment, can also prevent simultaneously that conductor 100 and other conductors, the wire in the cavity 210 from taking place unexpected short circuit, can realize the stable transmission of high-power electric energy, ensure charging equipment's normal use.
Further, in an embodiment of the present invention, the small-wire-diameter high-power charging cable structure further includes a ground wire 400 disposed in the cavity 210, and the ground wire 400 is in contact with an inner wall of the insulating sheath 200.
In the technical solution adopted in this embodiment, the grounding wire 400 is also called a safety return line, and when in danger, high voltage can be directly transferred to the ground, thereby avoiding electric shock of a user. It can be understood that, when the liquid cooling cable works normally, the grounding wire 400 is not electrified, the grounding wire 400 is in a transient state, and in abnormal conditions such as danger, the grounding wire 400 is electrified, and meanwhile, the power switch trips to cut off the power supply, and the cooling system formed by the cooling liquid and the liquid flow channel stops working. In this embodiment, the ground wire 400 may include a ground wire conductor and a ground wire insulating layer, the ground wire insulating layer is wrapped around the ground wire conductor, wherein the ground wire conductor is used for transferring the high-voltage current to the ground, and the ground wire insulating layer may prevent the ground wire conductor and other conductors from being accidentally shorted.
Further, in an embodiment of the present invention, the grounding wire 400 includes a plurality of sub wires independently disposed, and the plurality of sub wires are respectively and independently disposed in the cavity 210.
In the technical scheme that this embodiment adopted, earth connection 400 includes the sub-line of many independent settings, that is to say, with earth connection 400 split many sub-lines, so, make the footpath of each sub-line all less, when arranging, the shared space of each sub-line in the liquid cooling cable is less, can make full use of the space in the cavity 210, can set up in a flexible way in the liquid cooling cable, improve the convenience of sub-line and other cables when arranging, make the space utilization in the cavity 210 more reasonable, the integral connection is compacter.
Further, in an embodiment of the present invention, the small-wire-diameter high-power charging cable structure further includes other wire cores 300 disposed in the cavity 210, the other wire cores 300 are provided with a plurality of wire cores, at least one of the plurality of wire cores 300 is in contact with an inner wall of the insulating sheath 200, and the ground wire 400 and the other wire cores 300 are disposed on opposite sides of the conductor 100.
In the technical solution adopted in this embodiment, the other wire cores 300 are used for electrically connecting a low-power device, and may be cables with insulating layers or bare cables, and the insulating layers may be filled with fillers to fix the other wire cores 300 in the insulating layers. Many other sinle silks 300 can produce the heat when using, and at least one other sinle silk 300 and the inner wall contact of insulating sheath 200 can utilize the coolant liquid to cool down, improves the heat-sinking capability of liquid cooling cable. In addition, the grounding wire 400 and the other wire cores 300 are arranged on two opposite sides of the conductor 100, so that the idle space in the cavity 210 can be fully utilized, and the space in the cavity 210 can be more reasonably utilized.
An embodiment of the present invention further provides a charging device, where the charging device includes the above small-wire-diameter high-power charging cable structure, and specifically, the specific structure of the small-wire-diameter high-power charging cable structure refers to the above embodiment.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the embodiments of the present invention, and all modifications and equivalents that can be made by using the contents of the description and drawings of the embodiments of the present invention or directly/indirectly applied to other related technical fields are included in the scope of the embodiments of the present invention.
Claims (10)
1. The utility model provides a big power charging cable structure of small line footpath which characterized in that, big power charging cable structure of small line footpath includes:
a conductor; and
the insulating sheath is provided with an inner wall facing the cavity and an outer wall facing away from the cavity, a liquid flow channel for cooling liquid to flow is formed between the inner wall and the outer wall, the extending directions of the conductor, the insulating sheath and the liquid flow channel are parallel, and the conductor is in contact with the inner wall of the insulating sheath so as to take away heat on the surface of the conductor through the flow of the cooling liquid.
2. The small-wire-diameter high-power charging cable structure according to claim 1, wherein the liquid flow channel comprises a liquid inlet channel and a liquid outlet channel, the liquid inlet channel and the liquid outlet channel are respectively and independently arranged between the inner wall and the outer wall of the insulating sheath, the liquid inlet channel and the liquid outlet channel are connected through an external pipeline to form a cooling loop, and at least one conductor is correspondingly arranged on each of the liquid inlet channel and the liquid outlet channel.
3. The small-wire-diameter high-power charging cable structure as claimed in claim 2, wherein the liquid inlet channel and the liquid outlet channel are symmetrically arranged about the cavity.
4. The small-wire-diameter high-power charging cable structure as claimed in claim 3, wherein the cross sections of the liquid inlet channel and the liquid outlet channel are respectively arc-shaped.
5. The small-wire-diameter high-power charging cable structure according to any one of claims 1 to 4, wherein the insulating sheath is made of an explosion-proof material.
6. The small wire diameter high power charging cable structure of claim 5, wherein the outer surface of the conductor is coated with an insulating layer.
7. The small-wire-diameter high-power charging cable structure according to claim 5, further comprising a ground wire disposed in the cavity, wherein the ground wire is in contact with an inner wall of the insulating sheath.
8. The small-wire-diameter high-power charging cable structure according to claim 7, wherein the grounding wire comprises a plurality of independently arranged sub-wires, and the plurality of sub-wires are respectively and independently arranged in the cavity.
9. The small-wire-diameter high-power charging cable structure according to claim 7, wherein the small-wire-diameter high-power charging cable structure further comprises a plurality of other wire cores disposed in the cavity, at least one of the plurality of other wire cores is in contact with the inner wall of the insulating sheath, and the grounding wire and the other wire cores are disposed on opposite sides of the conductor.
10. A charging device comprising a small-wire-diameter high-power charging cable structure according to any one of claims 1 to 9.
Priority Applications (1)
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| CN202210445850.7A CN114822926A (en) | 2022-04-26 | 2022-04-26 | Small-wire-diameter high-power charging cable structure and charging device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115295239A (en) * | 2022-10-09 | 2022-11-04 | 广州万城万充新能源科技有限公司 | Small-diameter pipeline turbulence device and super charging cable liquid cooling circulation system |
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2022
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115295239A (en) * | 2022-10-09 | 2022-11-04 | 广州万城万充新能源科技有限公司 | Small-diameter pipeline turbulence device and super charging cable liquid cooling circulation system |
| CN115295239B (en) * | 2022-10-09 | 2023-01-17 | 广州万城万充新能源科技有限公司 | Small-diameter pipeline turbulence device and super charging cable liquid cooling circulation system |
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