Liquid-cooled cable and charging gun

Abstract

The utility model relates to the field of electrical transmission, in particular to the field of high-power cables and new energy automobile charging. A liquid-cooled cable comprises a liquid-cooled pipeline with a built-in spring and a lead, and the spring can support the liquid-cooled pipeline, so that the liquid-cooled pipeline can be kept unblocked when the cable is bent. The spring can be separated from the pipe wall of the liquid cooling pipeline, on one hand, the liquid cooling pipeline is easier to process independently, on the other hand, the outer diameter of the spring can be smaller than the inner diameter of the liquid cooling pipeline, the liquid cooling pipeline can be extruded to deform and keep smooth, a gap between the liquid cooling pipeline and a wire is reduced, and the heat dissipation efficiency is improved; and the spring and the pipe wall of the liquid cooling pipeline can also be injection-molded together, so that the supporting force of the spring is stronger and more stable, and more serious cable bending conditions can be dealt with. The gaps between the liquid cooling pipelines and the wires are filled with heat conduction materials, magnesium oxide powder is preferably used, and when the number of the liquid cooling pipelines is more than one, the flow direction of the liquid can go back and forth, so that the temperature of the cable is more balanced. The charging gun uses the liquid-cooled cable.

Description

Technical Field

[0001] The utility model relates to the field of electrical transmission, in particular to the field of high-power cables and new energy vehicle charging. Background Art

[0002] At present, the power consumption of data centers is increasing with the surge in computing power, and the requirements for space utilization in data centers are also getting higher and higher, requiring the cable installation space to be as small as possible. Ordinary air-cooled cables are difficult to meet the needs, and ordinary hard copper tube flow channel cables require a larger bending radius, otherwise it is easy to affect the flow of liquid and the heat dissipation of the cable, affecting the safe operation of the data center.

[0003] With the rapid development of new energy vehicles, battery capacity continues to increase. While the driving range increases, it is also necessary to save charging time. High-power fast charging has become an inevitable trend. High-power fast charging will increase the heat of ordinary charging cables, accelerate cable aging, and even pose a safety hazard of spontaneous combustion caused by overheating. Although increasing the diameter of the cable can reduce the heat, a cable that is too thick will lead to problems such as increased cost, increased weight, difficulty in bending, and difficulty in use.

[0004] In order to solve the above problems, there are some flexible liquid-cooled cable solutions, which are made by winding the wire around the spring as the center. The liquid mainly flows through the spring, and the surface is an insulating layer and a sealing layer at the same time. Its shortcomings are that the conductor is immersed in the liquid, which is not convenient to use conductive liquids such as water to dissipate heat; the flow of the liquid is unidirectional, and the temperature of the liquid increases with the increase of the cable length, and the temperature of the cable is uneven; the sealing layer is exposed to the outside, and the risk of damage and leakage is high. There is also a liquid-cooled cable solution that uses springs as a flexible skeleton. The springs are arranged between the coaxial inner and outer conductive layers, and the spacing of the springs is used to form a spiral flow channel. In addition to the shortcomings of the aforementioned solutions, it also has problems such as large flow resistance and complex processing of the spiral flow channel. Utility Model Content

[0005] The utility model provides a liquid cooling cable and a charging gun, which alleviate the deficiencies of the prior art.

[0006] A liquid-cooled cable comprises a liquid-cooled pipeline with a built-in spring and a conductor, wherein the spring and the pipe wall of the liquid-cooled pipeline can be separated or injection-molded together. The liquid-cooled pipeline and the conductor are twisted to form a cable. The gap between the liquid-cooled pipeline and the conductor is filled with a heat-conducting material, preferably magnesium oxide powder. The number of liquid-cooled pipelines and conductors is set as required, and the diameters of different liquid-cooled pipelines can be different to suit the overall shape of the cable.

[0007] The beneficial effects of the utility model are: a liquid-cooled cable, comprising a liquid-cooled pipeline and a conductor with a built-in spring, the spring can support the liquid-cooled pipeline so that the liquid-cooled pipeline can be kept unobstructed when the cable is bent. The spring and the pipe wall of the liquid-cooled pipeline can be separated. On the one hand, it is easier to process the liquid-cooled pipeline separately, and on the other hand, the outer diameter of the spring can be smaller than the inner diameter of the liquid-cooled pipeline. The liquid-cooled pipeline can be squeezed and deformed while remaining unobstructed, which is beneficial to reducing the gap between it and the conductor and improving the heat dissipation efficiency; the spring and the pipe wall of the liquid-cooled pipeline can also be injection molded together, and the supporting force of the spring is stronger and more stable, and can cope with more serious cable bending situations. The liquid-cooled pipeline and the conductor are twisted to form a cable, which can increase the strength of the cable. The gap between the liquid-cooled pipeline and the conductor is filled with a thermal conductive material, preferably magnesium oxide powder. Filling with a thermal conductive material can improve the heat dissipation efficiency, and magnesium oxide powder has good thermal conductivity. The number of liquid cooling pipelines and wires is set according to needs. When the number of liquid cooling pipelines exceeds one, the liquid can flow back and forth to make the temperature of the cable more balanced; the diameter of the liquid cooling pipeline can be different to suit the overall shape of the cable, and the coordination of large and small liquid cooling pipelines can reduce the gap between the liquid cooling pipeline and the wire, thereby improving the heat dissipation efficiency.

[0008] A charging gun using the above-mentioned liquid-cooled cable.

[0009] The beneficial effects of the utility model are:

[0010] This charging gun has all the advantages of the above-mentioned liquid-cooled cable, which will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of a liquid-cooled cable according to the utility model.

[0012] In the figure, 1. liquid cooling pipeline, 1-1. spring, 1-2. pipe wall, 2. wire, 2-1. insulation layer, 3. thermal conductive material, 4. protective layer. DETAILED DESCRIPTION

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0014] Embodiment 1

[0015] An embodiment of the utility model is a liquid-cooled cable;

[0016] like Figure 1As shown: A liquid-cooled cable comprises a liquid-cooled pipeline 1 with a built-in spring 1-1 and a conductor 2, the liquid-cooled pipeline 1 and the conductor 2 are twisted to form a cable and wrapped in a protective layer 4. The surface of the conductor 2 has an insulating layer 2-1. The number of liquid-cooled pipelines 1 is set as needed, and the diameters of the liquid-cooled pipelines 1 are not completely the same to fit the overall shape of the cable. The spring 1-1 is separated from the pipe wall 1-2 of the liquid-cooled pipeline, and the liquid-cooled pipeline 1 is squeezed and deformed but remains unobstructed. The gap between the liquid-cooled pipeline 1 and the conductor 2 is filled with magnesium oxide powder as a thermal conductive material 3.

[0017] Embodiment 2

[0018] An embodiment of the utility model is a charging gun using the above-mentioned liquid cooling cable.

Claims

1. A liquid-cooled cable, characterized in that: The invention comprises a liquid cooling pipeline with a built-in spring and a wire, wherein the spring is separated from the pipe wall of the liquid cooling pipeline.

2. A liquid-cooled cable, characterized in that: The invention comprises a liquid cooling pipeline with a built-in spring and a wire, wherein the spring and the pipe wall of the liquid cooling pipeline are injection molded together.

3. The liquid-cooled cable according to claim 1 or 2, characterized in that: A plurality of the liquid cooling pipelines and the conductive wires are provided, and the diameters of the liquid cooling pipelines are not completely the same.

4. The liquid-cooled cable according to claim 1 or 2, characterized in that: The gap between the liquid cooling pipeline and the conductive wire is filled with heat conductive material.

5. A charging gun, characterized by: The invention comprises a liquid-cooled cable according to any one of claims 1 to 4.

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