Liquid-cooled charging cables for new energy vehicles

Abstract

The utility model discloses a liquid-cooled charging cable for new energy vehicles, comprising: a cable core formed by twisting a plurality of power cores, a plurality of control core groups and a ground wire, and a sheath layer coated on the outside of the cable core, a cooling tube is sleeved at intervals on the outside of the central conductor of the power core, so that a cooling channel for passing a cooling medium is formed between the inner wall of the cooling tube and the outer surface of the central conductor, a first wrapping layer and a second wrapping layer are sequentially arranged on the outside of the control core group formed by twisting at least two control cores, a braided layer is arranged between the first wrapping layer and the second wrapping layer, and the braided layer is cross-woven by a plurality of bare copper wires and a plurality of tinned copper wires. The utility model can improve the anti-interference ability of the control core group, effectively avoid the interference of external high and low frequency electromagnetic changes on the control core signal transmission, and improve the stability of signal transmission.

Description

Technical Field

[0001] The utility model relates to a liquid-cooled charging cable for a new energy vehicle, belonging to the technical field of new energy and energy saving. Background Art

[0002] With the continuous increase in the production and sales of new energy vehicles, charging piles have become an important infrastructure, and also the biggest shortcoming that restricts the rapid advancement of new energy vehicles. In the past two years, the development of charging piles, the basic supporting facilities for charging new energy vehicles, has become increasingly lagging, and most charging piles at this stage have a long charging time. Therefore, high-power fast charging technology has emerged. Charging cables are the carriers of electric energy for charging piles, and the safety performance of the cables plays an important role in the safety of basic charging facilities and charging stations.

[0003] The existing cables for charging new energy vehicles usually use high-power and high-current cables to overcome the defect of long charging time, which leads to large heat and electromagnetic interference during use, especially interference with signal transmission inside the cable. However, the heat dissipation of existing cables for charging new energy vehicles usually adopts natural heat dissipation, which causes heat and aging damage to the cable body, posing a major safety hazard. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a liquid-cooled charging cable for new energy vehicles. The liquid-cooled charging cable for new energy vehicles can improve the anti-interference ability of the control wire core group, effectively avoid the interference of external high and low frequency electromagnetic changes on the control wire core signal transmission, and improve the stability of signal transmission.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a liquid-cooled charging cable for new energy vehicles, comprising: a cable core formed by twisting a plurality of power cores, a plurality of control core groups and a ground wire, and a sheath layer coated on the outside of the cable core, a cooling tube is sleeved on the outside of the central conductor of the power core, so that a cooling channel for passing a cooling medium is formed between the inner wall of the cooling tube and the outer surface of the central conductor, a first wrapping layer and a second wrapping layer are sequentially arranged on the outside of the control core group formed by twisting at least two control cores, a braided layer is arranged between the first wrapping layer and the second wrapping layer, and the braided layer is cross-woven by a plurality of bare copper wires and a plurality of tinned copper wires.

[0006] The further improved scheme in the above technical scheme is as follows:

[0007] 1. In the above scheme, a plurality of the bare copper wires are parallel to each other and are arranged at intervals, and a plurality of the tinned copper wires are parallel to each other and are arranged at intervals.

[0008] 2. In the above scheme, the bare copper wires and the tinned copper wires are staggered and arranged at intervals.

[0009] 3. In the above solution, one of the first wrapping layer and the second wrapping layer is formed by wrapping an aluminum alloy tape, and the other is formed by wrapping a non-woven fabric tape.

[0010] 4. In the above solution, the gaps between the power wire core, the control wire core group and the ground wire are filled with thermal conductive glue.

[0011] 5. In the above solution, the four power line cores are arranged in sequence along the circumferential direction in the sheath layer, and the cooling tubes of adjacent power line cores are pressed against each other.

[0012] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0013] The utility model discloses a liquid-cooled charging cable for new energy vehicles, in which a cooling tube is sleeved at intervals on the outer side of the central conductor of the power core, so that a cooling channel for passing a cooling medium is formed between the inner wall of the cooling tube and the outer surface of the central conductor, and a first winding layer and a second winding layer are sequentially arranged on the outer side of a control core group formed by twisting at least two control cores, and a braided layer is arranged between the first winding layer and the second winding layer, and the braided layer is cross-woven by a plurality of bare copper wires and a plurality of tinned copper wires, which can improve the anti-interference ability of the control core group while realizing stable transmission of high-power electric energy and effective heat dissipation, effectively avoid interference of external high- and low-frequency electromagnetic changes on control core signal transmission, and improve the stability of signal transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Attached Figure 1 This is a schematic diagram of the structure of the liquid-cooled charging cable for new energy vehicles of the utility model;

[0015] Attached Figure 2 This is a schematic diagram of the structure of the signal control cable group in the liquid-cooled charging cable of the utility model;

[0016] Attached Figure 3 It is a schematic diagram of the local structure of the braided layer in the liquid-cooled charging cable of the utility model.

[0017] In the above figures: 1, power core; 11, center conductor; 111, bare copper conductor; 112, conductor braided layer; 12, cooling tube; 2, control core group; 21, control core; 3, ground wire; 4, sheath layer; 5, cooling channel; 61, first winding layer; 62, second winding layer; 7, braided layer; 71, bare copper wire; 72, tinned copper wire; 8, conductor; 9, insulation layer. DETAILED DESCRIPTION

[0018] The present invention can be further understood through the specific embodiments given below, but they are not intended to limit the present invention.

[0019] Embodiment 1: A liquid-cooled charging cable for new energy vehicles, comprising: a cable core formed by twisting a plurality of power cores 1, a plurality of control core groups 2 and a ground wire 3, and a sheath layer 4 wrapped around the outside of the cable core, a cooling tube 12 is sleeved on the outside of the central conductor 11 of the power core 1, so that a cooling channel 5 for passing a cooling medium is formed between the inner wall of the cooling tube 12 and the outer surface of the central conductor 11, a first wrapping layer 61 and a second wrapping layer 62 are sequentially arranged on the outside of the control core group 2 formed by twisting at least two control cores 21, a braided layer 7 is arranged between the first wrapping layer 61 and the second wrapping layer 62, and the braided layer 7 is cross-woven by a plurality of bare copper wires 71 and a plurality of tinned copper wires 72.

[0020] The plurality of bare copper wires 71 are parallel to each other and spaced apart, and the plurality of tinned copper wires 72 are parallel to each other and spaced apart;

[0021] The bare copper wires 71 and the tinned copper wires 72 are staggered and arranged at intervals;

[0022] One of the first wrapping layer 61 and the second wrapping layer 62 is formed by wrapping an aluminum alloy tape, and the other is formed by wrapping a non-woven fabric tape;

[0023] A plurality of control core groups 2 and ground wires 3 are arranged at intervals along the inner wall of the sheath layer 4 and are located between two adjacent power cores 1;

[0024] The cooling tube 12 of the power core 1 is coaxially arranged with the central conductor 11 .

[0025] Embodiment 2: A liquid-cooled charging cable for new energy vehicles, comprising: a cable core formed by twisting a plurality of power cores 1, a plurality of control core groups 2 and a ground wire 3, and a sheath layer 4 wrapped around the outside of the cable core, a cooling tube 12 is sleeved on the outside of the central conductor 11 of the power core 1, so that a cooling channel 5 for passing a cooling medium is formed between the inner wall of the cooling tube 12 and the outer surface of the central conductor 11, a first wrapping layer 61 and a second wrapping layer 62 are sequentially arranged on the outside of the control core group 2 formed by twisting at least two control cores 21, a braided layer 7 is arranged between the first wrapping layer 61 and the second wrapping layer 62, and the braided layer 7 is cross-woven by a plurality of bare copper wires 71 and a plurality of tinned copper wires 72.

[0026] The plurality of bare copper wires 71 are parallel to each other and spaced apart, and the plurality of tinned copper wires 72 are parallel to each other and spaced apart;

[0027] The gaps between the power wire core 1, the control wire core group 2 and the ground wire 3 are filled with thermal conductive glue;

[0028] The four power line cores 1 are arranged in sequence along the circumferential direction in the sheath layer 4, and the cooling tubes 12 of adjacent power line cores 1 are pressed against each other;

[0029] The central conductor 11 of the power core 1 comprises a bare copper conductor 111 and a conductor braided layer 112 wrapped around the bare copper conductor 111;

[0030] The control wire core 21 and the ground wire 3 both include a conductor 8 and an insulating layer 9 arranged outside the conductor 8 .

[0031] The liquid-cooled charging cable used in the new energy vehicle can improve the anti-interference ability of the control core group while achieving stable transmission of high-power electric energy and effective heat dissipation, effectively avoid interference of external high and low-frequency electromagnetic changes on the control core signal transmission, and improve the stability of signal transmission.

[0032] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A liquid-cooled charging cable for a new energy vehicle, comprising: A cable core formed by twisting a plurality of power cores (1), a plurality of control core groups (2) and a ground wire (3) and a sheath layer (4) coated on the outside of the cable core, characterized in that: a cooling tube (12) is sleeved on the outside of the central conductor (11) of the power core (1), so that a cooling channel (5) for passing a cooling medium is formed between the inner wall of the cooling tube (12) and the outer surface of the central conductor (11), and a first wrapping layer (61) and a second wrapping layer (62) are sequentially arranged on the outside of the control core group (2) formed by twisting at least two control cores (21), and a braided layer (7) is arranged between the first wrapping layer (61) and the second wrapping layer (62), and the braided layer (7) is cross-woven from a plurality of bare copper wires (71) and a plurality of tinned copper wires (72).

2. The liquid-cooled charging cable for new energy vehicles according to claim 1, characterized in that: The plurality of bare copper wires (71) are arranged parallel to each other and at intervals, and the plurality of tinned copper wires (72) are arranged parallel to each other and at intervals.

3. The liquid-cooled charging cable for new energy vehicles according to claim 1, characterized in that: The bare copper wires (71) and the tinned copper wires (72) are staggered and arranged at intervals.

4. The liquid-cooled charging cable for new energy vehicles according to claim 1, characterized in that: One of the first wrapping layer (61) and the second wrapping layer (62) is formed by wrapping an aluminum alloy tape, and the other is formed by wrapping a non-woven fabric tape.

5. The liquid-cooled charging cable for new energy vehicles according to claim 1, characterized in that: The gaps between the power wire core (1), the control wire core group (2) and the ground wire (3) are filled with heat-conducting glue.

6. The liquid-cooled charging cable for new energy vehicles according to claim 1, characterized in that: The four power line cores (1) are arranged in sequence along the circumferential direction in the sheath layer (4), and the cooling pipes (12) of adjacent power line cores (1) are in contact with each other in a pressing manner.

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