Cable cooled by air cooling or liquid cooling

Abstract

The utility model discloses a cable using air cooling or liquid cooling for cooling, which relates to the technical field of new energy charging, and comprises a wire core and an insulating sleeve, and the insulating sleeve is sleeved on the outer side of the wire core; a plurality of conducting grooves are integrally formed in the inner side face of the insulating sleeve, the conducting grooves are arranged in a circular array mode, the conducting grooves are spirally arranged in the insulating sleeve, and conducting gaps are reserved between the outer side face of the wire core and the conducting grooves; compared with the prior art, the beneficial effects of the utility model are that the inner side of the insulation sleeve is provided with the conduction groove, the conduction groove is arranged in a spiral shape, air or insulation cooling liquid can be effectively conveyed, the conduction gap is arranged to realize stable conveying of the air or the insulation cooling liquid between the wire core and the insulation sleeve, the midway blockage is avoided, and the service life of the insulation sleeve is prolonged. Therefore, air or insulating cooling liquid can directly contact with the wire cores to effectively cool, and the heat dissipation effect is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy charging, in particular to a cable which is cooled by air cooling or liquid cooling. Background Art

[0002] New energy vehicles refer to vehicles that use unconventional vehicle fuels as a power source (or use conventional vehicle fuels and new vehicle power devices), and integrate advanced technologies in vehicle power control and drive to form vehicles with advanced technical principles, new technologies, and new structures. New energy vehicles include pure electric vehicles, extended-range electric vehicles, hybrid vehicles, fuel cell electric vehicles, hydrogen engine vehicles, etc.

[0003] Pure electric vehicles need to be connected to new energy cables when charging. In order to increase the charging speed of pure electric vehicles, charging piles are required for charging. The power during charging is very high, so a lot of heat will be generated during the charging process. When the cable is overheated, the insulation skin on the outside is prone to aging and cracking. Therefore, it is necessary to design a charging solution through liquid cooling. The prior art (Announcement No.: CN116018656A, Announcement Date: 2023.04.25) discloses a liquid-cooled charging cable for new energy vehicles. A cooling pipe and a return pipe are provided in the cable to realize liquid cooling of the power core. However, when the coolant in the cooling pipe cools the power core, it is equipped with an insulating layer to wrap the core conductor, resulting in poor heat dissipation effect. At present, the coolant itself has insulating properties (for example, pure water is not conductive), and the insulating coolant can be directly transported to the core conductor for heat dissipation, and there will be no leakage. Moreover, this method can further improve the cooling effect of the cable, and there is no need to equip the cooling pipe and the return pipe separately, thereby effectively reducing the preparation cost of the cable.

[0004] The cables on the market are generally composed of a core and an outer sheath. The core is used to transmit electricity, and the outer sheath is used for insulation protection. However, there is no ventilation or liquid structure between the core and the outer sheath, and the outer sheath generally needs to be tightly fitted on the outside of the core. There is no heat dissipation structure between the two, which makes it impossible to directly cool the core with air or liquid. Therefore, it is necessary to design a cable that can directly transport air or liquid flow, so that air or insulating coolant can directly contact the core, making it suitable for high-power pure electric vehicle charging. Utility Model Content

[0005] In order to overcome the above-mentioned shortcomings, the utility model provides a technical solution that can solve the above-mentioned problems.

[0006] A cable that uses air cooling or liquid cooling for cooling includes a wire core and an insulating sleeve, wherein the insulating sleeve is installed on the outside of the wire core; the inner side surface of the insulating sleeve is integrally formed with a plurality of conducting grooves, the plurality of conducting grooves are arranged in a circular array with each other, the plurality of conducting grooves are all spirally arranged in the insulating sleeve, and a conducting gap is left between the outer side surface of the wire core and the plurality of conducting grooves.

[0007] Furthermore: the wire core is composed of a plurality of conductive metal wires that are rotated and wound around each other, and the rotation angle of the plurality of conductive metal wires is different from the spiral angle of the plurality of conducting slots.

[0008] Furthermore: the inner side surfaces of the insulating sleeve and the plurality of conducting grooves are integrally formed with a plurality of vertical grooves, and the directions of the plurality of vertical grooves are parallel to the direction of the insulating sleeve.

[0009] Furthermore: the conductive metal wire is any one of silver wire, copper wire, aluminum wire and iron wire.

[0010] Further: a hollow tube is arranged in the middle of the wire core, and the plurality of conductive metal wires are rotationally wound and installed on the outer side of the hollow tube.

[0011] Furthermore: a positioning convex edge is integrally formed on the side edge inside the insulating sleeve, and the positioning convex edge is spirally arranged inside the insulating sleeve, and the positioning convex edge presses the wire core into the multiple conducting grooves.

[0012] Furthermore: the inner side surface of the positioning convex edge is integrally formed with a plurality of retention grooves, and the plurality of retention grooves are all located in the conduction gap.

[0013] Furthermore: the plurality of retention slots are arranged in an array with equal distances from each other.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. A conducting groove is arranged on the inner side of the insulating sleeve. The conducting groove is arranged in a spiral shape, which can effectively transport air or insulating coolant. At the same time, a conducting gap is set to achieve stable transportation of air or insulating coolant between the wire core and the insulating sleeve, without blockage in the middle. The air or insulating coolant can directly contact the wire core to effectively cool it down, thereby improving the heat dissipation effect;

[0016] 2. The utility model can be applied to charging of new energy vehicles with higher power. The setting of multiple conduction grooves can evenly distribute air or insulating coolant to the outside of the wire core, realize stable heat transfer and better heat dissipation effect;

[0017] 3. The utility model sets an infusion structure in the cable, and the positive and negative electrodes of the cable can be used as cooling pipes and return pipes respectively, without the need to equip cooling pipes and return pipes separately, thereby accelerating the heat dissipation effect and effectively reducing the preparation cost of air-cooled and liquid-cooled cables.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. 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 these drawings without paying creative labor.

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 It is an enlarged structural schematic diagram of the cross section of the utility model;

[0022] Figure 3 yes Figure 2 Schematic diagram of the structure after the wire core is hidden;

[0023] Figure 4 It is a schematic diagram of the structure of the wire core;

[0024] Figure 5 yes Figure 3 A schematic diagram of the structure from another perspective;

[0025] Figure 6 This is a schematic diagram of the structure of another wire core.

[0026] As shown in the figure: 1. wire core; 2. insulating sleeve; 3. multiple conduction grooves; 4. conduction gap; 5. multiple vertical grooves; 6. hollow tube; 7. positioning convex edge; 8. multiple stay grooves; 9. conductive metal wire. DETAILED DESCRIPTION

[0027] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0028] The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0029] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0030] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] like Figure 1-6 As shown, the cable of the utility model that uses air cooling or liquid cooling for cooling comprises a wire core 1 and an insulating sleeve 2, wherein the insulating sleeve 2 is sleeved and installed on the outside of the wire core 1; the inner side surface of the insulating sleeve 2 is integrally formed with a plurality of conducting grooves 3, wherein the plurality of conducting grooves 3 are mutually arranged in a circular array, and the plurality of conducting grooves 3 are all spirally arranged in the insulating sleeve 2, and a conducting gap 4 is left between the outer side surface of the wire core 1 and the plurality of conducting grooves 3;

[0033] The principle is: a conducting groove 3 is set on the inner side of the insulating sleeve 2, and the conducting groove 3 is arranged in a spiral shape, which can effectively transport air or insulating coolant. At the same time, a conducting gap 4 is set to realize the stable transportation of air or insulating coolant between the wire core 1 and the insulating sleeve 2, and there will be no blockage in the middle. The air or insulating coolant can directly contact the wire core 1 for effective cooling, thereby improving the heat dissipation effect. It can be used for charging higher-power new energy vehicles. The setting of multiple conducting grooves 3 can allow the air or insulating coolant to be evenly distributed to the outside of the wire core 1, realizing stable heat transfer and better heat dissipation effect.

[0034] The utility model arranges an infusion structure in the cable, and the positive and negative electrodes of the cable can be used as a cooling pipe and a return pipe respectively, without the need to equip additional cooling pipes and return pipes, thereby accelerating the heat dissipation effect and effectively reducing the preparation cost of air-cooled and liquid-cooled cables.

[0035] Furthermore: the wire core 1 is composed of multiple conductive metal wires 9 that are rotated and wound around each other, and the rotation and winding angles of the multiple conductive metal wires 9 are different from the spiral angles of the multiple conductive grooves 3; the conductive metal wires 9 will not directly fall into the conductive grooves 3, thereby ensuring the effective width of the conductive gap 4, so that the cable will not be blocked when squeezed, ensuring the effect of air cooling or liquid cooling of the cable.

[0036] Furthermore: the inner sides of the insulating sleeve 2 and the multiple conducting grooves 3 are integrally formed with multiple vertical grooves 5, and the directions of the multiple vertical grooves 5 are arranged parallel to the direction of the insulating sleeve 2; the arrangement of the vertical grooves 5 can further increase the effective space of the conducting gap 4 so that it will not be blocked. At the same time, the direction of the vertical grooves 5 is the same as the direction of the cable, which can realize the rapid flow of air or insulating coolant in the insulating sleeve 2 and achieve rapid cooling.

[0037] Furthermore: the conductive metal wire 9 is any one of silver wire, copper wire, aluminum wire and iron wire.

[0038] Furthermore: a hollow tube 6 is provided in the middle of the wire core 1, and the multiple conductive metal wires 9 are rotated and wound and installed on the outer side of the hollow tube 6; the stability of the installation of the wire core 1 can be further increased, and at the same time, the effective space of the conductive gap 4 can be further increased to achieve rapid air cooling and liquid cooling.

[0039] Furthermore: a positioning convex edge 7 is integrally formed on the side edge of the insulating sleeve 2, and the positioning convex edge 7 is spirally arranged in the insulating sleeve 2, and the positioning convex edge 7 presses the wire core 1 into the multiple conducting grooves 3; the setting of the positioning convex edge 7 can ensure the effective space of the conducting gap 4, while ensuring the stable installation of the wire core 1.

[0040] Furthermore: the inner side surface of the positioning convex edge 7 is integrally formed with a plurality of retention grooves 8, and the plurality of retention grooves 8 are all located in the conductive gap 4; when using insulating coolant for heat dissipation, more insulating coolant can be allowed to remain on the outside of the wire core 1, thereby accelerating the speed of heat transfer and achieving a better heat dissipation effect.

[0041] Furthermore, the plurality of retention slots 8 are arranged in an array with equal distances from each other, so that uniform heat dissipation on the cable can be achieved.

[0042] This embodiment does not impose any formal restrictions on the shape, material, structure, etc. of the utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model are within the protection scope of the technical solution of the utility model.

Claims

1. A cable that uses air cooling or liquid cooling for cooling, comprising a wire core and an insulating sleeve, wherein the insulating sleeve is installed on the outside of the wire core; characterized in that: The inner side surface of the insulating sleeve is integrally formed with a plurality of conducting grooves, the plurality of conducting grooves are arranged in a circular array with each other, and a conducting gap is left between the outer side surface of the wire core and the plurality of conducting grooves; A positioning convex edge is integrally formed on the side edge of the insulating sleeve, and the positioning convex edge is spirally arranged in the insulating sleeve, and the positioning convex edge presses the wire core into the multiple conducting grooves.

2. The cable cooled by air cooling or liquid cooling according to claim 1, characterized in that: The plurality of conducting grooves are all spirally arranged in the insulating sleeve.

3. The cable cooled by air cooling or liquid cooling according to claim 1, characterized in that: The wire core is composed of a plurality of conductive metal wires that are rotated and wound around each other, and the rotation angle of the plurality of conductive metal wires is different from the spiral angle of the plurality of conducting slots.

4. The cable cooled by air cooling or liquid cooling according to any one of claims 1, 2 or 3, characterized in that: The inner side surfaces of the insulating sleeve and the plurality of conducting grooves are integrally formed with a plurality of vertical grooves, and the directions of the plurality of vertical grooves are parallel to the direction of the insulating sleeve.

5. The cable cooled by air cooling or liquid cooling according to claim 3, characterized in that: The conductive metal wire is any one of silver wire, copper wire, aluminum wire and iron wire.

6. The cable cooled by air cooling or liquid cooling according to claim 3, characterized in that: A hollow tube is arranged in the middle of the wire core, and the plurality of conductive metal wires are rotationally wound and installed on the outer side surface of the hollow tube.

7. According to any one of claims 1, 2 or 3, the inner side surface of the positioning protrusion is integrally formed with a plurality of retention grooves, and the plurality of retention grooves are all located in the conduction gap.

8. The cable cooled by air cooling or liquid cooling according to claim 7, characterized in that: The plurality of retention slots are arranged in an array with equal distances from each other.

Images