CN220020705U - Liquid cooling cable and charging device - Google Patents

Abstract

The utility model provides a liquid cooling cable and a charging device, wherein the liquid cooling cable comprises a conductor, a first insulating part, a braiding part and an outer sheath, wherein a cooling channel for cooling liquid to flow is formed in the first insulating part, and the conductor is arranged in the cooling channel; the braiding part is sleeved on the periphery of the first insulating part; the outer sheath is sleeved on the periphery of the braiding part; or the braiding part is arranged in the first insulating part, and the outer sheath is sleeved on the periphery of the first insulating part; or, the outer sheath is sleeved on the periphery of the first insulating piece, and the braiding piece is arranged in the outer sheath. According to the utility model, the cooling channel is arranged to dissipate heat of the conductor so as to keep the stability of the liquid cooling cable during operation, the braiding piece is arranged to increase the integral strength of the liquid cooling cable, and the outer sheath is arranged to protect the first insulating piece and the braiding piece.

Description

Liquid cooling cable and charging device

Technical Field

The utility model relates to the technical field of charging cables, in particular to a liquid cooling cable and a charging device.

Background

With the rapid development of new energy technology, electric vehicles enter home and business fields in large numbers, and users have higher and higher requirements on battery capacity, driving mileage and charging speed, so that high-power charging technology is gradually developed. The high-power charging pile is high in voltage and high in current, and a large amount of heat can be generated in the using process, so that the cable is easy to heat.

Based on the above problems, new products such as liquid cooling cables, liquid cooling charging guns, liquid cooling sockets and the like are gradually produced in the market. In the related art, a channel through which cooling liquid can flow is arranged in the cable to cool the conductor, but when the conductor is electrified, the conductor is easily closely connected with the insulator, so that the temperature outside the liquid cooling cable is increased, the outer layer of the insulator can deform under the influence of high temperature and after long-time use, and the cable and the ground are rubbed, so that the liquid cooling cable is possibly broken, and safety accidents are generated.

Disclosure of Invention

The utility model aims to provide a liquid cooling cable, which aims to radiate heat of a conductor through a cooling channel so as to keep the stability of the liquid cooling cable in operation, the strength of the whole liquid cooling cable can be enhanced through arranging a braiding part, and the whole liquid cooling cable can be protected through arranging an outer sheath.

In order to achieve the above object, the present utility model provides a liquid cooling cable, including:

a conductor;

a first insulating member in which a cooling passage through which a cooling liquid flows is formed, the conductor being provided in the cooling passage; and

the braiding part is sleeved on the periphery of the first insulating part, and the outer sheath is sleeved on the periphery of the braiding part;

or the braiding part is arranged in the first insulating part, and the outer sheath is sleeved on the periphery of the first insulating part;

or, the outer sheath is sleeved on the periphery of the first insulating piece, and the braiding piece is arranged in the outer sheath.

In one embodiment of the present utility model, the cooling liquid comprises an insulating cooling liquid, the conductor comprises stranded wires and metal braided wires, and the metal braided wires are sleeved on the periphery of the stranded wires so as to keep the stranded wires stable;

alternatively, the cooling liquid comprises insulating cooling liquid, and the conductors are arranged in a net shape.

In one embodiment of the utility model, the outer circumference of the conductor is provided with a first insulating layer, which is in contact with the cooling liquid.

In one embodiment of the utility model, the cooling fluid comprises an electrically conductive cooling fluid.

In an embodiment of the present utility model, the material of the woven piece is nylon or plastic;

and/or the outer sheath is made of plastic.

In an embodiment of the present utility model, the cooling channels include a first cooling channel and a second cooling channel, where the first cooling channel and the second cooling channel are symmetrically disposed along a center line of the first insulating member, and at least one of the conductors is disposed in the first cooling channel and the second cooling channel respectively.

In an embodiment of the utility model, the conductor comprises a positive conductor and a negative conductor, one of the first cooling channel and the second cooling channel being provided with the positive conductor, the other of the first cooling channel and the second cooling channel being provided with the negative conductor.

In an embodiment of the utility model, the liquid cooled cable further comprises:

at least two accommodating cavities which are arranged in the first insulating piece and are spaced from the cooling channel; and

the auxiliary cable comprises a ground wire and a signal wire, and the ground wire and the signal wire are arranged in at least two accommodating cavities.

In an embodiment of the utility model, the cooling channels comprise a first cooling channel and a second cooling channel, and at least one of the accommodation cavities is arranged between the first cooling channel and the second cooling channel.

The utility model also provides a charging device, which comprises the liquid cooling cable.

The liquid cooling cable comprises a conductor, a first insulating part, a braiding part and an outer sheath, wherein a cooling channel for cooling liquid to flow is formed in the first insulating part, the conductor is arranged in the cooling channel, and the conductor is soaked in the cooling liquid so as to dissipate heat in time during working. The strength of the whole liquid cooling cable can be enhanced by arranging the braiding parts; the arrangement of the outer sheath can protect the first insulating piece and the braiding piece, so that the stability of the liquid cooling cable in operation is maintained.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a liquid-cooled cable according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of an embodiment of a liquid cooled cable of the present utility model having an insulating coolant therein;

FIG. 3 is a cross-sectional view of an embodiment of a liquid cooled cable of the present utility model containing conductive cooling fluid;

FIG. 4 is a cross-sectional view of another embodiment of a liquid cooled cable of the present utility model;

fig. 5 is a cross-sectional view of a further embodiment of the liquid cooled cable of the present utility model.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				100	Liquid cooling cable	10	Conductor
11	Positive conductor	13	Negative conductor
				15	A first insulating layer	20	First insulating member
21	First cooling channel	23	Second cooling channel
				25	Insulating coolant	27	Conductive cooling liquid
29	Accommodating chamber	30	Braiding part
				40	Outer sheath	50	Auxiliary cable
51	Ground wire	53	Signal line

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The utility model provides a liquid cooling cable 100, wherein the liquid cooling cable 100 comprises a conductor 10, a first insulating member 20, a braiding member 30 and an outer sheath 40, wherein a cooling channel for cooling liquid to flow is formed in the first insulating member 20, and the conductor 10 is arranged in the cooling channel; the braiding part 30 is sleeved on the periphery of the first insulating part 20; the outer sheath 40 is sleeved on the periphery of the braiding part 30; alternatively, the braid 30 is disposed in the first insulating member 20, and the outer sheath 40 is sleeved on the outer periphery of the first insulating member 20; alternatively, the outer sheath 40 is sleeved on the outer periphery of the first insulating member 20, and the braid 30 is provided in the outer sheath 40.

In the present embodiment, a cooling channel through which cooling liquid flows is formed in the first insulating member 20, the conductor 10 is disposed in the cooling channel, and the conductor 10 is immersed in the cooling liquid, so that heat can be dissipated in time when the conductor 10 works, and the heat dissipation effect of the liquid-cooled cable 100 is improved. The braid 30 is sleeved on the outer periphery of the first insulating member 20, so that the strength of the whole liquid-cooled cable 100 can be increased; the outer sheath 40 is sleeved on the outer periphery of the braiding member 30, and can protect the first insulating member 20 and the braiding member 30, so that stability of the liquid cooling cable 100 during operation is maintained.

The braiding parts 30 can be arranged in a net shape, the connection with the first insulating parts 20 can be in a clamping connection, a sleeving connection and other connection modes, and clamping grooves can be formed in the first insulating parts 20 for clamping the braiding parts 30 with the first insulating parts 20, so that stable connection between the braiding parts 30 and the first insulating parts 20 can be maintained.

The outer sheath 40 is sleeved on the outer periphery of the braiding part 30, a large amount of heat can be generated when the liquid cooling cable 100 works, the cooling liquid in the first insulating part 20 flows to absorb the heat generated by the conductor 10, the temperature of the cooling liquid is increased, so that the temperature of the first insulating part 20 is increased, and the outer sheath 40 can play a role in heat insulation on the first insulating part 20 and the braiding layer; the liquid cooled cable 100 is often rubbed against the ground or a structure for securing it during operation, and the outer jacket 40 may protect it.

In other embodiments of the present utility model, the braid 30 may be disposed inside the first insulating member 20 by means of attachment, clamping, sleeving, etc., and the outer sheath 40 is sleeved on the outer periphery of the first insulating member 20, so that the strength of the liquid-cooled cable 100 is increased and the first insulating member 20 is protected; alternatively, the braid 30 may be disposed inside the outer sheath 40 by means of attachment, clamping, sleeving, etc., and the outer sheath 40 is sleeved on the outer periphery of the first insulating member 20, so that the strength of the liquid cooling cable 100 is increased and the first insulating member 20 is protected; the liquid-cooled cable 100 of the present utility model includes, but is not limited to, the three arrangements described above.

It can be appreciated that the liquid cooling cable 100 according to the present embodiment can be applied to a high-power charging device, such as a charging gun or a charging stand.

Referring to fig. 1 and 2, in one embodiment of the present utility model, the coolant includes an insulating coolant 25, and the conductor 10 includes a stranded wire and a metal braid wire that is sleeved around the outer circumference of the stranded wire to keep the stranded wire stable.

The conductor 10 is a main line of the liquid-cooled cable 100, and may be made of a conductive material, such as copper or other materials that can be electrically connected to an external charging device to conduct a circuit.

In this embodiment, the conductor 10 is a dc line, and the dc line may be a single stranded wire or a plurality of stranded wire bundles; when the conductor 10 includes a plurality of strands, a metal braid is provided to form a braid around the outer circumference of the strands to prevent them from unraveling so that the plurality of strands can remain stable to allow the circuit to be in a stable state; the cooling liquid may be insulating cooling liquid 25, for example, transformer oil, fluorinated liquid, or cable oil, but is not limited thereto, and when insulating cooling liquid 25 is circulated in the cooling channel, conductor 10 may be a bare conductor, i.e., an outer layer is not provided with an insulating layer, so that conductor 10 is in direct contact with insulating cooling liquid 25, and the heat dissipation effect is better.

It will be appreciated that in other embodiments, the conductor 10 may be woven from copper wire and arranged in a net shape, which may increase the contact area between the conductor 10 and the insulating coolant 25, thereby providing better heat dissipation.

Referring to fig. 1 to 3, in an embodiment of the present utility model, the outer circumference of the conductor 10 is provided with a first insulating layer 15, and the first insulating layer 15 is in contact with the cooling liquid.

In this embodiment, the first insulating layer 15 is disposed on the outer periphery of the conductor 10, so that the conductor 10 stably transmits current, maintains the stability of the circuit, and prevents leakage; while the coolant may absorb heat generated by the conductor 10 to bring the temperature of the conductor 10 within a safe range. The coolant in this embodiment may be the insulating coolant 25 or the conductive coolant 27, and is not limited herein.

Referring to fig. 1 and 3, in an embodiment of the present utility model, the cooling liquid includes a conductive cooling liquid 27, the conductive cooling liquid 27 may be water, and the conductive cooling liquid 27 contacts the first insulating layer 15 so as to dissipate heat in time when the conductor 10 is operated, so that the temperature of the conductor 10 may be within a safe range, and thus the conductor 10 may maintain a good electrical connection with an external device, i.e., keep a circuit open.

Referring to fig. 1 to 5, in an embodiment of the present utility model, the material of the braid 30 is nylon.

Nylon has better toughness strength, and is stretch-proof, wear-resistant and heat-resistant.

In this embodiment, the material of the braid 30 is nylon, which may be configured in a cylindrical shape, so as to be sleeved on the outer periphery of the first insulating member 20 to form a braid, so that stable connection between the braid and the first insulating member 20 can be maintained, and the strength of the whole liquid-cooled cable 100 is increased.

In other embodiments, the material of the braid 30 may be plastic.

Referring to fig. 1 to 5, in an embodiment of the present utility model, the outer sheath 40 is made of plastic.

In the present embodiment, the outer sheath 40 is made of PVC, which is lightweight, low in manufacturing cost, and heat-resistant, and can withstand the heat emitted from the first insulating member 20, and isolate the heat from the outside, so as to prevent the first insulating member 20 from being deformed due to excessively high temperature.

Referring to fig. 1 to 5, in an embodiment of the present utility model, the cooling channels may be provided as follows:

the cooling channels include a first cooling channel 21 and a second cooling channel 23, the first cooling channel 21 and the second cooling channel 23 are symmetrically disposed along a center line of the first insulating member 20, and the first cooling channel 21 and the second cooling channel 23 respectively correspond to the at least one conductor 10.

In this embodiment, the cooling channels may include a first cooling channel 21 and a second cooling channel 23, the first cooling channel 21 may be provided with a positive conductor 11, the second cooling channel 23 may be provided with a negative conductor 13, and by providing the first cooling channel 21 and the second cooling channel 23, the respective heat dissipation of the positive conductor 11 and the negative conductor 13 may be realized, so that the local high temperature of the liquid cooling cable 100 caused by the heat dissipation of all the conductors 10 through the same cooling channel is avoided, thereby improving the uniformity of heat dissipation.

The first cooling channel 21 and the second cooling channel 23 are symmetrically arranged along the center line of the first insulating member 20, that is, the areas and the shapes of the first cooling channel 21 and the second cooling channel 23 are the same, so that the same cooling effect provided by the cooling liquid can be obtained at each position inside the liquid cooling cable 100, the uniformity of heat dissipation of the outer surface of the conductor 10 can be ensured, and the influence of local high temperature on normal use is avoided.

Referring to fig. 1 to 5, in an embodiment of the present utility model, further, the conductor 10 includes a positive conductor 11 and a negative conductor 13, one of the first cooling passage 21 and the second cooling passage 23 is provided with the positive conductor 11, and the other of the first cooling passage 21 and the second cooling passage 23 is provided with the negative conductor 13.

In this embodiment, one or more negative conductors 13 may be disposed in the first cooling channel 21, one or more positive conductors 11 may be disposed in the second cooling channel 23, one of the first cooling channel 21 and the second cooling channel 23 is a liquid inlet channel, and the other is a liquid outlet channel, and the two channels may be communicated outside the first insulating member 20 through a connection device, thereby forming a circulation circuit in which the cooling liquid flows. Namely, the cooling system adopts a mode of one inlet and one outlet, so that the circulating flow of the cooling liquid is realized, the cooling liquid can be reused, and the use cost is reduced.

It will be appreciated that the conductor 10 includes a positive conductor 11 for connection with the positive pole of the external device and a negative conductor 13 for connection with the negative pole of the external device, such that a conductive circuit is formed between the liquid cooled cable 100 and the external device.

The positive conductor 11 and the negative conductor 13 may be disposed in the first cooling passage 21 and the second cooling passage 23, respectively, to prevent shorting thereof; when the positive conductors 11 and the negative conductors 13 are respectively provided with a plurality of positive conductors 11 and a plurality of negative conductors 13, the positive conductors 11 are arranged in one cooling channel, the negative conductors 13 are arranged in the other cooling channel, and cooling liquid flows in the cooling channels so as to timely cool the positive conductors 11 and the negative conductors 13; providing the plurality of positive conductors 11 and the plurality of negative conductors 13 can increase the contact area of the conductors 10 with the coolant, so that the heat dissipation effect is better.

Referring to fig. 1 to 5, in an embodiment of the present utility model, the liquid-cooled cable 100 may further be configured as follows:

the liquid cooling cable 100 further comprises at least two accommodating cavities 29 and an auxiliary cable 50, wherein the at least two accommodating cavities 29 are arranged in the first insulating member 20 and are spaced from the cooling channel; the auxiliary cable 50 includes a ground wire 51 and a signal wire 53, and the ground wire 51 and the signal wire 53 are provided in at least two accommodation chambers 29.

The auxiliary cable 50 refers to a non-high power cable, the high power cable refers to a cable that can maintain the charging device to operate by the electric power transmitted, and the auxiliary cable 50 may be a ground wire 51, a communication cable, a low power cable, etc., which is not limited herein.

In the present embodiment, the auxiliary cable 50 includes a plurality of ground wires 51 and signal wires 53, the number of the ground wires 51 and the signal wires 53 includes a plurality of ground wires 51 and a plurality of signal wires 53 are respectively disposed in at least two accommodating chambers 29, and the accommodating chambers 29 and the cooling flow paths are disposed in the first insulating member 20 and are not communicated with each other, so as to fully utilize the space in the first insulating member 20.

When the number of the accommodating chambers 29 is two, the two accommodating chambers 29 are also symmetrically arranged along the center line of the first insulating member 20, the outer circumference of the ground wire 51 is not required to be provided with an insulating layer, and the outer circumference of the signal wire 53 is required to be provided with an insulating layer to maintain stable signal transmission. Compared with embedding the auxiliary cable in the first insulating member 20, the accommodating cavity 29 is arranged to accommodate the auxiliary cable 50, so that the processing is easier, the difficulty of production is reduced, and the production efficiency is improved.

Referring to fig. 1 to 5, in an embodiment of the present utility model, further, the cooling channels include a first cooling channel 21 and a second cooling channel 23, and at least one receiving cavity 29 is provided between the first cooling channel 21 and the second cooling channel 23.

In the present embodiment, at least one accommodating cavity 29 is located between the first cooling channel 21 and the second cooling channel 23, and the accommodating cavity 29 and the cooling channel do not interfere with each other, thereby improving the space utilization of the first insulating member 20.

In one embodiment of the present utility model, the conductor 10, the auxiliary cable 50 and the first insulating member 20 may be integrally formed. Specifically, in the production and processing process of the liquid cooling cable 100, the conductor 10, the auxiliary cable 50 and the first insulating member 20 are integrally formed on the extrusion die, so that the whole processing and manufacturing of the liquid cooling cable 100 are facilitated, and the processing and assembling efficiency of the liquid cooling cable 100 is improved.

In other embodiments of the present utility model, the cooling channel and the accommodating cavity 29 in the first insulating member 20 may be extruded first, and then the conductor 10 may be inserted into the cooling channel, and the auxiliary cable 50 may be inserted into the accommodating cavity 29.

The utility model also provides a charging device, the charging device comprises the liquid cooling cable 100, and the specific structure of the liquid cooling cable 100 refers to the above embodiment, and since the charging device adopts all the technical solutions of all the embodiments, at least has all the beneficial effects brought by the technical solutions of the embodiments, and the detailed description is omitted herein.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (9)

1. A liquid cooled cable, the liquid cooled cable comprising:

a conductor;

the cooling device comprises a first insulating piece, a second insulating piece and a conductor, wherein a cooling channel for cooling liquid to flow and at least two accommodating cavities are formed in the first insulating piece, the at least two accommodating cavities are arranged at intervals with the cooling channel, and the conductor is arranged in the cooling channel;

the auxiliary cable comprises a ground wire and a signal wire, and the ground wire and the signal wire are arranged in at least two accommodating cavities; and

the braiding part is sleeved on the periphery of the first insulating part, and the outer sheath is sleeved on the periphery of the braiding part;

or the braiding part is arranged in the first insulating part, and the outer sheath is sleeved on the periphery of the first insulating part;

or, the outer sheath is sleeved on the periphery of the first insulating piece, and the braiding piece is arranged in the outer sheath.

2. The liquid cooled cable of claim 1, wherein the cooling fluid comprises an insulating cooling fluid, the conductor comprises stranded wires and a metal braided wire, and the metal braided wire is sleeved on the periphery of the stranded wires so as to keep the stranded wires stable;

alternatively, the cooling liquid comprises insulating cooling liquid, and the conductors are arranged in a net shape.

3. The liquid cooled cable of claim 1, wherein a first insulating layer is provided on an outer circumference of the conductor, the first insulating layer being in contact with the cooling liquid.

4. The liquid cooled cable of claim 3, wherein the cooling fluid comprises an electrically conductive cooling fluid.

5. The liquid cooled cable of claim 1, wherein the braid is nylon or plastic;

and/or the outer sheath is made of plastic.

6. The liquid cooled cable of claim 1, wherein the cooling channel comprises a first cooling channel and a second cooling channel, the first cooling channel and the second cooling channel being symmetrically disposed along a centerline of the first insulating member, the first cooling channel and the second cooling channel respectively corresponding to at least one of the conductors.

7. The liquid cooled cable of claim 6, wherein the conductors comprise a positive conductor and a negative conductor, one of the first cooling channel and the second cooling channel being provided with the positive conductor, the other of the first cooling channel and the second cooling channel being provided with the negative conductor.

8. The liquid cooled cable of claim 1, wherein the cooling channel comprises a first cooling channel and a second cooling channel, at least one of the receiving cavities being disposed between the first cooling channel and the second cooling channel.

9. A charging device comprising a liquid cooled cable according to any one of claims 1 to 8.