Liquid-cooled cable for charging pile

Abstract

The utility model discloses a liquid-cooled cable for a charging pile, which belongs to the technical field of cables, and comprises a cable core, a ground wire core, a signal wire core and a conductor wire core, and an inner sheath is wrapped outside the cable core, the ground wire core, the signal wire core and the conductor wire core. A first cooling cavity is arranged at the joint of the cable core, the ground wire core, the signal wire core and the conductor wire core with the inner sheath, a second cooling cavity is arranged at the center of the joint of the cable core, the ground wire core, the signal wire core and the conductor wire core, and the outer side of the inner sheath is coated with an outer sheath. The inner space of the third cooling cavity can be divided into a spiral structure through the spiral partition in the third cooling cavity, so that the flowing path of a liquid refrigerant can be effectively prolonged at the axial position of the cable in the process that the liquid refrigerant passes through the third cooling cavity, the heat exchange time of a cable core, a ground wire core, a signal wire core and a conductor wire core is prolonged, and the service life of the cable core is prolonged. And the overall cooling effect of the cable is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, and more specifically to a liquid-cooled cable for charging piles. Background Technique

[0002] With the rapid development of the new energy vehicle industry, more and more manufacturers have started to develop liquid-cooled cables for charging. For example, Chinese Utility Model Patent No. CN209343814U discloses a highly flexible immersion type high-power liquid-cooled cable, in which a gap is provided between the conductor and the insulating layer of the cable for the coolant to flow, so that the conductor core is directly immersed in the coolant, and the heat is carried away by the flow of the coolant. However, the existing liquid-cooled cables often have a large diameter and are not easy to bend, especially more obvious when the ambient temperature is low. During the use of the charging pile, it will bring great inconvenience to the user, and it is also not conducive to the storage and storage of the cable.

[0003] In an existing patent for a liquid-cooled cable for charging piles, in Patent No. CN213877638U, by arranging the cable cores side by side and cooperating with a flat and long outer sheath, the width of the cable in the up and down direction is greatly reduced, so that the cable can be bent with a smaller radius in this direction, which is convenient for use and storage.

[0004] However, in Patent No. CN213877638U, there is a gap filled with insulating coolant between the cable cores at both ends and the filling layer. Since the gap is arranged in a straight-through structure, the flow path of the coolant is shortened, and the heat exchange time is reduced, resulting in a poor cooling effect on the cable. Therefore, we propose a liquid-cooled cable for charging piles to solve the above problems. Content of the Utility Model

[0005] 1. Technical Problem to be Solved

[0006] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a liquid-cooled cable for charging piles, which can divide the internal space of the third cooling cavity into a spiral configuration through the spiral partition in the third cooling cavity. Therefore, during the process of the liquid refrigerant passing through the third cooling cavity, the flow path of the liquid refrigerant can be effectively extended in the axial position of the cable, and the heat exchange time for the cable core, ground wire core, signal wire core and conductor core is increased, thereby improving the overall cooling effect of the cable.

[0007] 2. Technical Solution

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] A liquid-cooled cable for charging piles, including a cable core, a ground wire core, a signal wire core and a conductor core, and an inner sheath is coated on the outer sides of the cable core, ground wire core, signal wire core and conductor core;

[0010] A first cooling cavity is provided at the joint of the cable core, the ground wire core, the signal wire core and the conductor wire core and the inner sheath, and a second cooling cavity is provided at the central part where the cable core, the ground wire core, the signal wire core and the conductor wire core are combined;

[0011] The outer side of the inner sheath is covered with an outer sheath, a third cooling cavity is provided between the inner sheath and the outer sheath, and a spiral partition is provided inside the third cooling cavity.

[0012] Further, the radial cross-sections of the cable core, the ground wire core, the signal wire core and the conductor wire core are all arranged in a circular structure.

[0013] Further, the cable core, the ground wire core, the signal wire core and the conductor wire core are arranged symmetrically in pairs.

[0014] Further, a plurality of the first cooling cavities are symmetrically arranged.

[0015] Further, the spiral partition and the inner sheath and the outer sheath are of an integrally formed structure.

[0016] Further, the third cooling cavity is arranged in a spiral structure in the axial position of the inner sheath.

[0017] Further, the inner sides of the first cooling cavity, the second cooling cavity and the third cooling cavity are all filled with a liquid refrigerant, and the liquid refrigerant is a fluorinated liquid coolant.

[0018] 3. Beneficial effects

[0019] Compared with the prior art, the advantages of the present utility model are as follows:

[0020] (1) In this solution, the internal space of the third cooling cavity is separated into a spiral configuration by the spiral partition in the third cooling cavity. Therefore, during the process of the liquid refrigerant passing through the third cooling cavity, the flow path of the liquid refrigerant can be effectively extended in the axial position of the cable, and the heat exchange time of the cable core, the ground wire core, the signal wire core and the conductor wire core is increased, thereby improving the overall cooling effect of the cable.

[0021] (2) In this solution, through the flow of the refrigerant in the first cooling cavity and the second cooling cavity, the outer sides and the joint parts of the cable core, the ground wire core, the signal wire core and the conductor wire core can be cooled simultaneously, further improving the cooling effect of the cable. Brief description of the drawings

[0022] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0023] Figure 2 is a side view schematic diagram of the present utility model;

[0024] Figure 3 It is a schematic cross-sectional view of part A-A of the present utility model;

[0025] Figure 4 It is a schematic structural view of the inner sheath of the present utility model.

[0026] Explanation of the reference numerals in the figure:

[0027] 1. Cable core; 2. Ground wire core; 3. Signal wire core; 4. Conductor wire core; 5. Inner sheath; 6. First cooling cavity; 7. Second cooling cavity; 8. Outer sheath; 9. Spiral partition; 10. Third cooling cavity. Specific implementation manner

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model; obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0029] Embodiment:

[0030] Please refer to Figures 1-4 , the liquid-cooled cable for charging pile, includes a cable core 1, a ground wire core 2, a signal wire core 3 and a conductor wire core 4, and an inner sheath 5 is coated on the outer sides of the cable core 1, the ground wire core 2, the signal wire core 3 and the conductor wire core 4;

[0031] A first cooling cavity 6 is provided at the joint of the cable core 1, the ground wire core 2, the signal wire core 3 and the conductor wire core 4 and the inner sheath 5, and a second cooling cavity 7 is provided at the central part where the cable core 1, the ground wire core 2, the signal wire core 3 and the conductor wire core 4 are combined;

[0032] An outer sheath 8 is coated on the outer side of the inner sheath 5, a third cooling cavity 10 is provided between the inner sheath 5 and the outer sheath 8, and a spiral partition 9 is provided on the inner side of the third cooling cavity 10;

[0033] It should be noted that when the liquid-cooled cable for charging pile is in use, the spiral partition 9 in the third cooling cavity 10 divides the internal space of the third cooling cavity 10 into a spiral configuration. Therefore, during the process of the liquid refrigerant passing through the third cooling cavity 10, the flow path of the liquid refrigerant can be effectively extended in the axial position of the cable, and the heat exchange time with the cable core 1, the ground wire core 2, the signal wire core 3 and the conductor wire core 4 is increased, thereby improving the overall cooling effect of the cable;

[0034] Through the flow of the refrigerant in the first cooling cavity 6 and the second cooling cavity 7, the outer sides and the joint parts of the cable core 1, the ground wire core 2, the signal wire core 3 and the conductor wire core 4 can be cooled simultaneously, which can further improve the cooling effect of the cable.

[0035] As Figure 2 shown, the radial cross-sections of the cable core 1, the ground wire core 2, the signal wire core 3 and the conductor wire core 4 are all arranged in a circular structure, and the cable core 1, the ground wire core 2, the signal wire core 3 and the conductor wire core 4 are arranged symmetrically in pairs, and a plurality of first cooling cavities 6 are symmetrically arranged;

[0036] It should be noted that through the flow of the refrigerant in the first cooling cavity 6 and the second cooling cavity 7, the outer sides and the joint parts of the cable core 1, the ground wire core 2, the signal wire core 3 and the conductor wire core 4 can be cooled simultaneously.

[0037] As Figure 2 shown, the spiral partition 9, the inner sheath 5 and the outer sheath 8 are of an integrally formed structure, and the third cooling cavity 10 is arranged in a spiral structure at the axial position of the inner sheath 5;

[0038] It should be noted that the internal space of the third cooling cavity 10 is separated into a spiral configuration by the spiral partition 9 in the third cooling cavity 10. Therefore, during the process of the liquid refrigerant passing through the third cooling cavity 10, the flow path of the liquid refrigerant can be effectively extended in the axial position of the cable, and the heat exchange time with the cable core 1, the ground wire core 2, the signal wire core 3 and the conductor wire core 4 is increased.

[0039] The inner sides of the first cooling cavity 6, the second cooling cavity 7 and the third cooling cavity 10 are all filled with a liquid refrigerant, and the liquid refrigerant is a fluorinated liquid coolant.

[0040] In use: the internal space of the third cooling cavity 10 is separated into a spiral configuration by the spiral partition 9 in the third cooling cavity 10. Therefore, during the process of the liquid refrigerant passing through the third cooling cavity 10, the flow path of the liquid refrigerant can be effectively extended in the axial position of the cable, and the heat exchange time with the cable core 1, the ground wire core 2, the signal wire core 3 and the conductor wire core 4 is increased;

[0041] Through the flow of the refrigerant in the first cooling cavity 6 and the second cooling cavity 7, the outer sides and the joint parts of the cable core 1, the ground wire core 2, the signal wire core 3 and the conductor wire core 4 can be cooled simultaneously.

[0042] The above is only the preferred specific embodiment of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and its improvement concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A liquid-cooled cable for a charging pile, comprising a cable core (1), a ground wire core (2), a signal wire core (3) and a conductor wire core (4), characterized in that: The outer sides of the cable core (1), the ground wire core (2), the signal wire core (3) and the conductor wire core (4) are covered with an inner sheath (5); A first cooling cavity (6) is provided at the junction of the cable core (1), the ground wire core (2), the signal wire core (3) and the conductor wire core (4) with the inner sheath (5); and a second cooling cavity (7) is provided at the central portion where the cable core (1), the ground wire core (2), the signal wire core (3) and the conductor wire core (4) are joined; The outer side of the inner sheath (5) is covered with an outer sheath (8), a third cooling cavity (10) is provided between the inner sheath (5) and the outer sheath (8), and a spiral partition (9) is provided on the inner side of the third cooling cavity (10).

2. The liquid-cooled cable for a charging pile according to claim 1, characterized in that: The radial cross-sections of the cable core (1), the ground wire core (2), the signal wire core (3) and the conductor wire core (4) are all arranged in a circular structure.

3. The liquid-cooled cable for a charging pile according to claim 1, characterized in that: The cable cores (1), ground wire cores (2), signal wire cores (3) and conductor wire cores (4) are symmetrically arranged in pairs.

4. The liquid-cooled cable for a charging pile according to claim 1, characterized in that: A plurality of the first cooling chambers (6) are symmetrically arranged.

5. The liquid-cooled cable for a charging pile according to claim 1, characterized in that: The spiral partition (9), the inner sheath (5) and the outer sheath (8) are an integrally formed structure.

6. The liquid-cooled cable for a charging pile according to claim 1, characterized in that: The third cooling cavity (10) is arranged in a spiral structure at an axial position of the inner sleeve (5).

7. The liquid-cooled cable for a charging pile according to claim 1, characterized in that: The insides of the first cooling chamber (6), the second cooling chamber (7) and the third cooling chamber (10) are all filled with liquid refrigerant, and the liquid refrigerant is a fluorinated liquid coolant.

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