Liquid-cooled cable and charging device

Abstract

The utility model discloses a liquid cooling cable and a charging device, the liquid cooling cable comprises a sheath layer and a cable group, and the sheath layer forms a cavity along the axial direction; the cable group is arranged in the cavity, the cable group comprises a bare conductor and an insulating layer sleeved on the outer side of the bare conductor, a cooling channel arranged along the axial direction is formed in the bare conductor, and a cooling medium is arranged in the cooling channel, so that the bare conductor is in direct contact with the cooling medium. According to the technical scheme of the utility model, the current-carrying capability and the cooling efficiency of the liquid-cooled cable are improved while the wire diameter is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, and in particular to a liquid cooling cable and a charging device. Background Art

[0002] With the rapid development of new energy vehicles, people's requirements for high-power charging technology are getting higher and higher. The existing car charging cables have large wire diameters, low current carrying capacity and cooling efficiency, making daily charging of new energy vehicles very inconvenient. Utility Model Content

[0003] The main purpose of the utility model is to provide a liquid cooling cable, aiming to reduce the wire diameter while improving the current carrying capacity and cooling efficiency of the liquid cooling cable.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a liquid cooling cable, comprising:

[0005] A sheath layer having a cavity formed along the axial direction;

[0006] A cable group is arranged in the cavity, and the cable group includes a bare conductor and an insulating layer sleeved on the outside of the bare conductor. A cooling channel arranged along the axial direction is formed in the bare conductor, and a cooling medium is arranged in the cooling channel so that the bare conductor and the cooling medium are in direct contact.

[0007] Optionally, the bare conductor includes a first conductive layer and a second conductive layer, wherein the first conductive layer is arranged on the inner side of the insulating layer, the second conductive layer is arranged on the inner side of the first conductive layer, and a cooling channel is arranged on the inner side of the second conductive layer.

[0008] Optionally, the insulating layer comprises a first side, a second side, a third side and a fourth side connected end to end in sequence, and a tail portion of the fourth side is connected to a head portion of the first side;

[0009] The third side is arranged close to the jacket layer, the first side is arranged close to the center of the liquid cooling cable, and the length of the first side is smaller than the length of the third side.

[0010] Optionally, the third side is parallel to the jacket layer.

[0011] Optionally, a filler is provided in the cavity, and the filler fills the gap in the sheath layer.

[0012] Optionally, there is a first gap between the third edge and the sheath layer.

[0013] Optionally, there are two cable groups, the two cable groups are axially symmetrically arranged, the first sides of the two cable groups are adjacent to each other and parallel to each other, and there is a second gap between the first sides of the two cable groups.

[0014] Optionally, other cores are provided between the fourth sides of the two cable groups and the sheath layer;

[0015] And / or other cores are arranged between the second sides of the two cable groups and the sheath layer.

[0016] Optionally, the other wire cores include a sheath layer and a ground wire and a signal wire arranged inside the sheath layer.

[0017] The utility model also provides a charging device, comprising the liquid cooling cable.

[0018] A technical solution of the utility model is to form an axially arranged cooling channel in the bare conductor so that the bare conductor is in direct contact with the cooling medium in the cooling channel. With this arrangement, the cooling medium is in direct contact with the bare conductor, thereby improving the heat dissipation efficiency. On the other hand, the arrangement of the insulating liquid cooling pipe is omitted, thereby increasing the cross-sectional area of ​​the conductor under the same cable diameter, thereby improving the current carrying capacity of the liquid-cooled cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0020] Figure 1 It is a structural schematic diagram of an embodiment of the liquid cooling cable of the utility model.

[0021] Description of Figure Numbers:

[0022]

[0023]

[0024] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0027] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, "and / or" in the full text includes three solutions. Taking A and / or B as an example, it includes technical solution A, technical solution B, and technical solution that satisfies both A and B; in addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0028] With the rapid development of new energy technologies, new energy vehicles are becoming more and more popular. Users have higher and higher requirements for car charging, among which charging speed has become a more important indicator of concern.

[0029] However, in the car's charging system, the greater the car's charging power, the higher the demand for the cable diameter of the charging cable, which often makes the cable diameter become very large, which is very inconvenient for daily use.

[0030] In view of this, the present invention proposes a liquid cooling cable 100 .

[0031] Please refer to Figure 1 In an embodiment of the utility model, a liquid-cooled cable 100 comprises a sheath layer 1 and a cable group 3, wherein the sheath layer 1 is provided with a cavity 2 along the axial direction; the cable group 3 is arranged in the cavity 2, and the cable group 3 comprises a bare conductor 32 and an insulating layer 31 sleeved on the outside of the bare conductor 32, and a cooling channel arranged along the axial direction is formed in the bare conductor 32, and a cooling medium 33 is provided in the cooling channel so that the bare conductor 32 and the cooling medium 33 are in direct contact with each other.

[0032] According to this embodiment, a cable group 3 is provided in the sheath layer 1 of the liquid-cooled cable 100. The cable group 3 includes an insulating layer 31, a bare conductor 32, and a cooling channel in the bare conductor 32 from the outside to the inside. A cooling medium 33 is passed through the cooling channel. This arrangement allows the cooling medium to directly contact the bare conductor 32, thereby improving the heat dissipation efficiency. On the other hand, by directly arranging the cooling channel in the bare conductor 32, the arrangement of the insulating liquid cooling pipe is omitted. Under the same cable diameter, the cross-sectional area of ​​the conductor is increased, thereby improving the current carrying capacity of the liquid-cooled cable 100. The insulating layer 31 is tightly wrapped around the outer wall of the bare conductor 32 to provide insulation protection for the bare conductor 32. The cooling medium 33 is an insulating cooling medium 33, which can be in a gaseous state or a liquid state, for example, it can be an inert gas, such as nitrogen, or an insulating cooling oil.

[0033] The utility model proposes an embodiment, the bare conductor 32 includes a first conductive layer 321 and a second conductive layer 322, the first conductive layer 321 is arranged inside the insulating layer 31, the second conductive layer 322 is arranged inside the first conductive layer 321, and a cooling channel is arranged inside the second conductive layer 322.

[0034] According to this embodiment, a cooling channel is provided inside the second conductive layer 322 so that the cooling medium 33 can pass through, and a first conductive layer 321 is provided outside the second conductive layer 322. By setting the bare conductor 32 as a double-layer conductive layer, it is not only convenient to transmit the cooling medium 33, but also increases the cross-sectional area of ​​the bare conductor 32. When the liquid-cooled cable 100 is in a conductive state, the first conductive layer 321 and the second conductive layer 322 are conductive at the same time, thereby increasing the current carrying capacity of the bare conductor 32. The second conductive layer 322 can be a metal tube, such as a copper tube, an aluminum tube, etc. Optionally, the second conductive layer 322 is a corrugated tube. Setting the second conductive layer 322 as a metal tube can prevent the cooling medium 33 from passing through the second conductive layer 322 and entering the first conductive layer 321. The first conductive layer 321 can be a plurality of metal wires twisted to the outside of the second conductive layer 322. By setting the first conductive layer 321 as a metal bellows and the second conductive layer 322 as a plurality of metal strands, such a setting not only facilitates the bending of the liquid-cooled cable 100, but also confines the cooling medium 33 inside the bellows, thereby preventing the first conductive layer 321 from being immersed in the cooling medium 33 and causing damage to the first conductive layer 321.

[0035] The utility model proposes an embodiment, the insulating layer 31 includes a first side 311, a second side 312, a third side 313 and a fourth side 314 which are connected end to end in sequence, and the tail of the fourth side 314 is connected to the head of the first side 311; the third side 313 is arranged close to the sheath layer 1, the first side 311 is arranged close to the center of the liquid-cooled cable 100, and the length of the first side 311 is less than the length of the third side 313.

[0036] Through this embodiment, the insulating layer 31 includes a first side 311, a second side 312, a third side 313 and a fourth side 314 which are connected end to end in sequence, and the tail of the fourth side 314 is connected to the head of the first side 311; the third side 313 is arranged close to the sheath layer 1, and the first side 311 is arranged close to the center of the liquid-cooled cable 100. The length of the first side 311 is less than the length of the third side 313. In this way, the insulating layer 31 has a longer side at one end close to the sheath layer 1 and a shorter side at the other end away from the sheath layer 1, thereby facilitating the layout of various components inside the liquid-cooled cable 100 and making full use of the internal space of the liquid-cooled cable 100.

[0037] Optionally, the third side 313 is parallel to the jacket layer 1. Since the third side 313 is parallel to the jacket layer 1 and the third side 313 is close to the outer jacket, the internal space of the liquid cooling cable 100 is further utilized, which is conducive to further reducing the wire diameter.

[0038] The utility model proposes an embodiment, in which a filler is provided in the cavity 2, and the filler fills the gap in the sheath layer 1. It can be understood that in order to make the entire liquid-cooled cable 100 circular, the filler is filled in the gap in the outer sheath. Optionally, there is a first gap 21 between the third side 313 and the sheath layer 1. Optionally, there are two cable groups 3, and the two cable groups 3 are arranged axially symmetrically. The first sides 311 of the two cable groups 3 are adjacent and parallel to each other, and there is a second gap 22 between the first sides 311 of the two cable groups 3. By setting a second gap 22 between adjacent sides of the insulation layers 31 of the two cable groups 3, there is a first gap 21 between the insulation layer 31 and the sheath layer 1, so that the filler is filled between adjacent cable groups 3, and between the cable group 3 and the sheath layer 1. Such a setting can, on the one hand, be more conducive to the circular cross-section of the entire liquid-cooled cable 100, and on the other hand, it can buffer between the various components and improve the anti-seismic and anti-compression capabilities of the cable.

[0039] The utility model proposes an embodiment, in which other cores are arranged between the fourth sides 314 of the two cable groups 3 and the sheath layer 1; and / or other cores are arranged between the second sides 312 of the two cable groups 3 and the sheath layer 1. Since the length of the third side 313 of the insulating layer 31 is greater than the length of the first side 311, an installation space is formed between the fourth sides 314 of the two adjacent cable groups 3 and the sheath layer 1, and similarly, an installation space is formed between the second sides 312 of the two adjacent cable groups 3 and the sheath layer 1. By installing other cores 4 in the installation space, the space in the liquid cooling cable 100 can be effectively utilized, so that the space utilization rate of the entire liquid cooling cable 100 is higher.

[0040] The utility model proposes an embodiment, the other wire core 4 includes a jacket layer 43 and a ground wire 41 and a signal wire 42 arranged inside the jacket layer 43. It can be understood that the jacket layer 43 wraps the ground wire 41 and the signal wire 42 to ensure the tightness of the structure of the entire other wire core 4.

[0041] The utility model further proposes a charging device, which includes a liquid cooling cable 100. The specific structure of the liquid cooling cable 100 refers to the above embodiment. Since the charging device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0042] The above description is only an optional embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A liquid cooling cable (100), characterized in that: include: A sheath layer (1) having a cavity (2) formed along the axial direction; A cable group (3) is arranged in the cavity (2), the cable group (3) comprising a bare conductor (32) and an insulating layer (31) sleeved on the outside of the bare conductor (32), a cooling channel arranged along the axial direction is formed in the bare conductor (32), and a cooling medium (33) is provided in the cooling channel so that the bare conductor (32) and the cooling medium (33) are in direct contact.

2. The liquid-cooled cable (100) according to claim 1, characterized in that: The bare conductor (32) comprises a first conductive layer (321) and a second conductive layer (322), wherein the first conductive layer (321) is arranged on the inner side of the insulating layer (31), and the second conductive layer (322) is arranged on the inner side of the first conductive layer (321), and a cooling channel is arranged on the inner side of the second conductive layer (322).

3. The liquid cooling cable (100) according to claim 1, characterized in that: The insulating layer (31) comprises a first side (311), a second side (312), a third side (313), and a fourth side (314) which are connected end to end in sequence, and the tail of the fourth side (314) is connected to the head of the first side (311); The third side (313) is arranged close to the jacket layer (1), the first side (311) is arranged close to the center of the liquid cooling cable (100), and the length of the first side (311) is smaller than the length of the third side (313).

4. The liquid cooling cable (100) according to claim 3, characterized in that: The third side (313) is parallel to the jacket layer (1).

5. The liquid-cooled cable (100) according to claim 4, characterized in that: A filler is arranged in the cavity (2), and the filler fills the gap in the sheath layer (1).

6. The liquid cooling cable according to claim 5, characterized in that: A first gap (21) is provided between the third edge (313) and the jacket layer (1).

7. The liquid-cooled cable (100) according to claim 6, characterized in that: There are two cable groups (3), the two cable groups (3) are arranged axially symmetrically, the first sides (311) of the two cable groups (3) are adjacent to each other and parallel to each other, and a second gap (22) is provided between the first sides (311) of the two cable groups (3).

8. The liquid-cooled cable (100) according to claim 7, characterized in that: Other wire cores are provided between the fourth sides (314) of the two cable groups (3) and the sheath layer (1); And / or other wire cores are provided between the second sides (312) of the two cable groups (3) and the sheath layer (1).

9. The liquid-cooled cable (100) according to claim 8, characterized in that: The other wire core (4) comprises a jacket layer (43) and a ground wire (41) and a signal wire (42) arranged inside the jacket layer (43).

10. A charging device, characterized in that: Comprising the liquid-cooling cable (100) according to any one of claims 1 to 9.

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