Liquid nitrogen cooling charging cable

Abstract

The utility model relates to the field of cables, in particular to a liquid nitrogen cooling charging cable, which is characterized by comprising a wire core body and an insulating sheath, and is characterized by further comprising at least one flat cooling pipe used for being filled with a liquid cooling agent, the flat cooling pipe is wound on the wire core body in a spiral shape, and the insulating sheath is arranged on the flat cooling pipe. The outer wall of the flat cooling pipe is spirally wound to form an arc-shaped contact surface matched with the outer wall of the wire core body, the arc-shaped contact surface is tightly attached to the outer wall of the wire core body, and the wire core body and the flat cooling pipe are sleeved in the insulating sheath. According to the liquid nitrogen cooling charging cable, a more comprehensive and rapid cooling effect can be achieved, so that the cooling efficiency can be improved, the advantages of improving the charging efficiency, reducing potential safety hazards, prolonging the service life of the cable and the like can be further achieved, and the liquid nitrogen cooling charging cable has very high reliability and applicability.

Description

TECHNICAL FIELD

[0001] The utility model relates to the cable field especially a liquid nitrogen cooling charging cable. BACKGROUND

[0002] The application publication with Chinese patent application publication number CN110473661A discloses a technical scheme named "a high-power charging pile cable and its production process", in which, liquid coolant is filled in the composite cooling pipe, and the cable core filler is filled in the gap between the power line core, the grounding line core, the auxiliary line core, the control line core and the composite cooling pipe, and the cable core filler adopts heat-conducting elastic material. In the high-power charging pile cable, the cooling pipe is in contact with the insulation layer line wrapped on the line core conductor, so the contact amount of the cooling pipe and the corresponding insulation layer is very small, which easily leads to that the heat generated by the line core conductor cannot be quickly conducted to the cooling pipe, and the heat needs to be conducted by the cable core filler, thereby easily leading to low cooling efficiency, and further easily leading to adverse conditions such as affecting charging efficiency, causing safety hazards and affecting cable service life. Therefore, it is necessary to design a charging cable that can solve the above technical problems. SUMMARY

[0003] The utility model discloses a liquid nitrogen cooling charging cable, which can achieve more comprehensive and rapid cooling effect, thereby improving the cooling efficiency, and further improving the charging efficiency, reducing the safety hazards and prolonging the service life of the cable, and has high reliability and applicability.

[0004] The technical scheme of the utility model is implemented as follows:

[0005] A liquid nitrogen cooling charging cable comprises a line core body and an insulation sheath, characterized in that at least one flat body cooling pipe for filling liquid coolant is further included, the flat body cooling pipe is spirally wound on the line core body, an arc contact surface matched with the outer wall of the line core body is formed on the outer wall of the flat body cooling pipe by the spiral winding, and the arc contact surface is tightly attached to the outer wall of the line core body, and the line core body and the flat body cooling pipe are sleeved in the insulation sheath.

[0006] Preferably, a plurality of convex strip parts are integrally formed on the inner wall of the flat body cooling pipe.

[0007] Preferably, each convex strip part is located on the inner wall of the flat body cooling pipe close to the line core body.

[0008] Preferably, all the outer edge angles of the flat body cooling pipe are outer arc transition edge angles, and all the inner edge angles of the flat body cooling pipe are inner arc transition edge angles.

[0009] Preferably, the wire core includes a conductor and an insulating layer, the insulating layer covering the conductor, and the flat cooling tube is spirally wound around the insulating layer.

[0010] Preferably, the width K of the flat cooling tube is greater than one-eighth of the outer circumference of the wire core and less than one-quarter of the outer circumference of the wire core.

[0011] The beneficial effects of this invention are as follows: The liquid nitrogen-cooled charging cable employs a flat cooling tube, which is spirally wound around the wire core. The outer wall of the flat cooling tube, also spirally wound, forms an arc-shaped contact surface that matches the outer wall of the wire core, ensuring the arc-shaped contact surface is tightly against the outer wall of the wire core. This not only significantly increases the contact area between the flat cooling tube and the wire core but also absorbs heat in multiple directions, resulting in a more comprehensive and rapid cooling effect. This improves cooling efficiency, leading to increased charging efficiency, reduced safety hazards, and extended cable lifespan. Therefore, this liquid nitrogen-cooled charging cable possesses extremely high reliability and applicability. Attached Figure Description

[0012] Figure 1 A schematic diagram of the structure of this utility model with a single flat cooling pipe.

[0013] Figure 2 A schematic diagram of the structure of this utility model with double flat cooling pipes.

[0014] Figure 3 A schematic diagram of the structure of this utility model with four flat cooling pipes.

[0015] Figure 4 This is a schematic diagram of the flat cooling pipe spirally wound in this utility model.

[0016] Figure 5 This is a schematic diagram of the cross-section of the flat cooling pipe in this utility model. Detailed Implementation

[0017] like Figures 1 to 5 As shown, the liquid nitrogen-cooled charging cable of this utility model includes a core body 1 and an insulating sheath 2. To achieve the purpose of this utility model, it also includes at least one flat cooling tube 3 for filling liquid coolant. The flat cooling tube 3 is spirally wound on the core body 1. The outer wall of the flat cooling tube 3 is spirally wound to form an arc-shaped contact surface 31 that matches the outer wall of the core body 1, and the arc-shaped contact surface 31 is tightly attached to the outer wall of the core body 1. The core body 1 and the flat cooling tube 3 are sleeved in the insulating sheath 2.

[0018] On the liquid nitrogen cooling charging cable, the flat body cooling pipe 3 is spirally wound on the wire core body 1, and the outer wall of the flat body cooling pipe 3 is spirally wound to form an arc contact surface 31 matched with the outer wall of the wire core body 1, and the arc contact surface 31 is tightly attached to the outer wall of the wire core body 1. This not only greatly increases the contact area of the flat body cooling pipe 3 and the wire core body 1, but also absorbs heat in multiple directions, so as to achieve a more comprehensive and rapid cooling effect, thereby improving the cooling efficiency, and further improving the charging efficiency, reducing the safety hidden danger and prolonging the service life of the cable. Therefore, the liquid nitrogen cooling charging cable has very high reliability and applicability.

[0019] As shown in Figure 5 The inner wall of the flat body cooling pipe 3 is integrally formed with a plurality of convex strip portions 32. This not only facilitates the making of the convex strip portions 32, but also enhances the structural strength of the flat body cooling pipe 3, and facilitates the increase of the contact area of the liquid coolant, thereby facilitating better cooling effect, which helps to further improve the reliability and applicability of the liquid nitrogen cooling charging cable.

[0020] As shown in Figures 1 to 5 Each convex strip portion 32 is located on the inner wall of the flat body cooling pipe 3 close to the wire core body 1. This not only controls the manufacturing difficulty of the flat body cooling pipe 3, but also ensures that the flat body cooling pipe 3 has very good heat conduction effect, which can further improve the applicability.

[0021] As shown in Figure 5 All outer edge angles of the flat body cooling pipe 3 are outer arc transition edge angles 33, and all inner edge angles of the flat body cooling pipe 3 are inner arc transition edge angles 34. This not only makes the flat body cooling pipe 3 have a stable and reliable structure, but also avoids unnecessary damage to the wire core body 1 and the insulating sheath 2 caused by the flat body cooling pipe 3, thereby helping to improve the durability of the liquid nitrogen cooling charging cable.

[0022] As shown in Figure 1 The wire core body 1 includes a wire 11 and an insulating isolation layer 12, the insulating isolation layer 12 is wrapped on the wire 11, and the flat body cooling pipe 3 is spirally wound on the insulating isolation layer 12. This can make the liquid nitrogen cooling charging cable have a more safe and reliable structure, thereby helping to further improve the safety and applicability of the liquid nitrogen cooling charging cable.

[0023] As shown in Figure 1 The width K of the flat body cooling pipe 3 is greater than one-eighth of the outer circumference length of the wire core body 1 and less than one-fourth of the outer circumference length of the wire core body 1. This not only facilitates the manufacturing and winding of the flat body cooling pipe 3, but also ensures that the heat conduction is very sufficient and effective, thereby further improving the applicability of the liquid nitrogen cooling charging cable.

[0024] The material of the related components on the liquid nitrogen cooling charging cable can be the material of the existing liquid nitrogen cooling charging cable, so that the manufacturing and liquid nitrogen cooling requirements can be met. The size ratio between the related components of the liquid nitrogen cooling charging cable can be adjusted according to the actual situation, and is not limited to the size ratio in the schematic diagram shown in the accompanying drawings.

[0025] In actual use, the following method can be used to form the cooling structure. The two ends of the flat body cooling pipe 3 are connected to the liquid storage tank (not shown in the figure) for storing liquid coolant, and the liquid coolant in the flat body cooling pipe 3 is circulated with the liquid coolant in the liquid storage tank by using the circulating pump (not shown in the figure). The liquid coolant can be liquid nitrogen, ice water, etc. In this way, the circulating cooling effect can be achieved, thereby effectively improving the cooling quality.

[0026] In the actual manufacturing process, the plurality of cables shown in the accompanying drawings can be arranged side by side and wrapped with an insulating outer layer to form a cable that can achieve charging, thereby meeting the actual charging requirements. Figures 1 to 3

[0027] As shown in the accompanying drawings, when there are gaps between the outer walls of the flat body cooling pipe 3 wound in a spiral shape, the heat-conducting elastic material 10 can be used to fill the gaps. This not only can obtain better cooling performance, but also can facilitate the use of the liquid nitrogen cooling charging cable. Figure 1

[0028] The above embodiments are preferred embodiments of the present application, and any similar structure and equivalent changes made shall belong to the protection scope of the present application.​​

Claims

1. A liquid nitrogen cooled charging cable comprising a core (1), an insulating sheath (2), characterized in that: The application further comprises at least one flat body cooling pipe (3) for filling liquid coolant, which is spirally wound around the wire core (1), and the outer wall of the flat body cooling pipe (3) is formed with an arc contact surface (31) matching the outer wall of the wire core (1) by the spiral winding, and the arc contact surface (31) is tightly attached to the outer wall of the wire core (1), and the wire core (1) and the flat body cooling pipe (3) are sleeved in the insulation sheath (2).

2. The liquid nitrogen cooled charging cable of claim 1, wherein: The inner wall of the flat body cooling pipe (3) is integrally formed with a plurality of convex strip parts (32).

3. The liquid nitrogen cooled charging cable of claim 2, wherein: Each convex strip part (32) is located on the inner wall of the flat body cooling pipe (3) close to the wire core (1).

4. The liquid nitrogen cooled charging cable of claim 1, wherein: All outer edge angles of the flat body cooling pipe (3) are outer arc transition edge angles (33), and all inner edge angles of the flat body cooling pipe (3) are inner arc transition edge angles (34).

5. The liquid nitrogen cooled charging cable of claim 1, wherein: The wire core (1) comprises a wire (11) and an insulation isolation layer (12), the insulation isolation layer (12) is wrapped on the wire (11), and the flat body cooling pipe (3) is spirally wound on the insulation isolation layer (12).

6. The liquid nitrogen cooled charging cable of claim 1, wherein: The width K of the flat body cooling pipe (3) is greater than one-eighth of the outer circumference length of the wire core (1) and less than one-fourth of the outer circumference length of the wire core (1).

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