Novel oil cooling cable structure

Abstract

The utility model discloses a novel oil cooling cable structure, comprising a conductive main body and a wire pipe used for wrapping the outer side of the circumference of the conductive main body, the conductive main body comprises two first composite wire cores, a hollow pipe, a first conductive wire core, two second conductive wire cores, a second composite wire core and two third conductive wire cores, the two first composite wire cores are arranged in the middle of the wire pipe, the hollow pipe and the second composite wire core are separated through the two first composite wire cores, the two second conductive wire cores are located on the two sides of the second composite wire core respectively, and a plurality of spiral flow channels are formed in the first composite wire cores. According to the utility model, an indirect cooling mode and an immersed cooling mode are used at the same time, so that the cooling effect of the cable is improved, the cooling temperature uniformity of the cable is better, the cable with the same sectional area can bear higher charging power and obtain higher charging power within a specified temperature rise range, and the service life of the cable is prolonged at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a novel oil-cooling cable structure. Background Art

[0002] At present, liquid-cooled cables are divided into indirect cooling and immersion cooling. Indirect cooling liquid-cooled cables generally bury the liquid cooling tube inside the cable. Due to the large thermal resistance of the liquid cooling tube, the heat exchange efficiency is low and the heat dissipation effect is poor, so the flow requirement of the system is relatively large. In addition, water is used as a cooling medium, and there is a risk of electric shock if there is a leak. Immersion cooling cables directly immerse the cable in the coolant for cooling. A gap is set between the conductor and the insulation layer of the cable or in the center of the conductor. The coolant flows in the gap to take away the heat. However, this cooling method does not specify the support method of the cable in the flow channel, which is difficult to implement. More importantly, once a bend occurs during use, the flow channel will be blocked, causing the liquid-cooled cable to be cut off, which will further seriously affect the service life of the cable. To this end, a new oil-cooled cable structure is now developed. Utility Model Content

[0003] The purpose of the utility model is to provide a novel oil-cooling cable structure to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a novel oil-cooled cable structure, comprising a conductive body and a wire tube for covering the outer side of the circumference of the conductive body, the conductive body comprising two first composite cores, an empty tube, a first conductive core, two second conductive cores, a second composite core and two third conductive cores, the two first composite cores are arranged in the middle of the wire tube, and the empty tube and the second composite core are separated by the two first composite cores, the two second conductive cores are respectively located on both sides of the second composite core, and a plurality of spiral flow channels are arranged in the first composite core.

[0005] Preferably, the first composite wire core includes an inner conductive layer, an elastic structural layer and an outer conductive layer arranged from the inside to the outside, the elastic structural layer includes a plurality of elastic metal wires spirally connected to the inner conductive layer, and a gap is left between any two adjacent elastic metal wires, and the gap forms a spiral flow channel.

[0006] Preferably, the empty tube is made of nylon material, and a coolant for cooling the cable flows through the empty tube, wherein the outer diameter of the empty tube is 8.0 mm, and the inner diameter of the empty tube is 6.0 mm.

[0007] Preferably, the first conductive core is formed by twisting a plurality of copper foil wires.

[0008] Preferably, the second conductor core is formed by twisting a bulletproof wire and three copper foil wires.

[0009] Preferably, the third wire core is a wire body formed by twisting a bulletproof wire and three copper foil wires, and a layer of tin-plated copper is coated on the outer circumference of the wire body.

[0010] Preferably, the second composite wire core layer includes an insulating layer and eight fourth conductive wire cores coated in the insulating layer, one of the fourth conductive wire cores being used as a center line, and the remaining seven fourth conductive wire cores being arranged on the circumference of the center line.

[0011] Preferably, the wire tube includes an isolation layer and an outer sheath for coating the conductive body, and the outer sheath is made of TPU material.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. By providing an empty tube and a first composite electric core in the present utility model, a plurality of spiral channels are provided in the first composite wire core, and the coolant can flow through the coolant through the spiral channels, so that the coolant has a larger contact area with the first composite electric core, improving the heat dissipation efficiency during the power supply of the liquid-cooled cable. The spiral channel design makes the cable cooling temperature uniformity better, enabling the cable with the same cross-sectional area to carry a larger charging power within the specified temperature rise range; at the same time, by providing an empty tube, the empty tube can also flow through the coolant to cool other wire cores inside the cable, further improving the cooling effect, while ensuring the conductive effect of other wire cores, obtaining a larger charging power, and at the same time increasing the service life of the cable.

[0014] 2. By providing an elastic structure in the present utility model, a plurality of elastic metal wires spirally wound around the inner conductive layer form a plurality of spiral channels, allowing the coolant to flow through the plurality of spiral channels, preventing the flow channel from being blocked due to one of the spiral channels being bent, resulting in the interruption of the liquid-cooled cable. By providing a plurality of spiral channels, the above situation is reduced, and a plurality of elastic metal wires are spirally wound around the inner conductive layer, and this structure has excellent support, reducing the possibility of cable bending and further increasing the service life of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a cross-sectional view of the present utility model;

[0016] Figure 2 is a cross-sectional view of the first composite wire core of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] Please refer to Figures 1 to 2 , an embodiment provided by the present invention: a new type of oil-cooled cable structure, including a conductive main body and a cable tube 10 for covering the outer circumference of the conductive main body. The conductive main body includes two first composite wire cores 11, an empty tube 12, a first conductive wire core 13, two second conductive wire cores 14, a second composite wire core 15, and two third conductive wire cores 16. The two first composite wire cores 11 are arranged in the middle of the cable tube, and the empty tube 12 and the second composite wire core 15 are separated by the two first composite wire cores 11. The two second conductive wire cores 14 are respectively located on both sides of the second composite wire core 15. A plurality of spiral channels 1 are provided in the first composite wire core 11. The coolant can flow through the spiral channels 1, so that the coolant has a larger contact area with the first composite wire core 11, improving the heat dissipation efficiency during the power supply of the liquid-cooled cable. At the same time, by providing the empty tube 12, the empty tube 12 can also flow through the coolant to cool other wire cores inside the cable, further improving the cooling effect, while ensuring the conductive effect of other wire cores, obtaining a larger charging power, and at the same time increasing the service life of the cable.

[0019] In this embodiment, both the indirect cooling method and the immersion cooling method are used at the same time, improving the cooling effect of the cable, making the temperature uniformity of the cable cooling better, enabling the cable with the same cross-sectional area to carry a larger charging power within the specified temperature rise range, obtaining a larger charging power, and at the same time increasing the service life of the cable.

[0020] The first composite wire core 11 includes an inner conductive layer 2, an elastic structure layer 3, and an outer conductive layer 4 arranged from the inside to the outside. The elastic structure layer 3 includes a plurality of elastic metal wires 5 spirally wound around the inner conductive layer 2.

[0021] In this embodiment, twelve elastic metal wires 5 are spirally wound around the circumference of the inner conductive layer 2. A gap is left between any two adjacent elastic metal wires 4. This gap forms a spiral channel 1, which allows the coolant to flow through a plurality of spiral channels, preventing the flow channel from being blocked due to the bending of one of the spiral channels, resulting in the interruption of the liquid-cooled cable. By providing a plurality of spiral channels, the above situation is reduced. Moreover, a plurality of elastic metal wires are spirally wound around the inner conductive layer. This structure has excellent support, reducing the possibility of cable bending and further increasing the service life of the cable.

[0022] In this embodiment, the hollow tube 12 is made of nylon material, and a coolant for cooling the cable flows through the hollow tube 12. Among them, the outer diameter of the hollow tube 12 is 8.0 mm, and the inner diameter of the hollow tube is 6.0 mm.

[0023] In this embodiment, the coolant is a non-conductive oily coolant.

[0024] In this embodiment, the first conductive wire core 13 is formed by stranding multiple copper foil wires, which further improves the conductive effect of the cable.

[0025] In this embodiment, the second conductive wire core 14 is formed by stranding bulletproof silk and three copper foil wires, which further improves the conductive effect of the cable.

[0026] In this embodiment, the third conductive wire core 16 is a wire body formed by stranding bulletproof silk and three copper foil wires, and a layer of tin-plated copper layer is coated on the outer circumference of the wire body, which further improves the conductive effect of the cable.

[0027] The second composite wire core layer 15 includes an insulating layer 18 and eight fourth conductive wire cores 17 coated in the insulating layer 18. One of the fourth conductive wire cores 17 serves as the center line, and the remaining seven fourth conductive wire cores 17 are arranged on the periphery of the center line, which further improves the conductive effect of the cable.

[0028] The wire tube 10 includes an isolation layer and an outer sheath for coating the conductive body. The outer sheath is made of TPU material, and the TUP material has excellent wear resistance, tensile properties, flexural properties, hydrolysis resistance, and high temperature and oxidation resistance, which can further improve the service life of the cable.

[0029] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A novel oil-cooling cable structure, comprising a conductive body and a wire tube for covering the outer circumference of the conductive body, characterized in that: The conductive body includes two first composite cores, an empty tube, a first conductive core, two second conductive cores, a second composite core and two third conductive cores. The two first composite cores are arranged in the middle of the tube, and the empty tube and the second composite core are separated by the two first composite cores. The two second conductive cores are respectively located on both sides of the second composite core. A plurality of spiral flow channels are arranged in the first composite core.

2. According to claim 1, a novel oil-cooling cable structure is characterized in that: The first composite wire core includes an inner conductive layer, an elastic structure layer and an outer conductive layer arranged from inside to outside. The elastic structure layer includes a plurality of elastic metal wires spirally connected to the inner conductive layer. A gap is left between any two adjacent elastic metal wires, and the gap forms a spiral flow channel.

3. According to claim 1, the novel oil-cooling cable structure is characterized in that: The empty tube is made of nylon material, and a coolant for cooling the cable flows through the empty tube, wherein the outer diameter of the empty tube is 8.0 mm, and the inner diameter of the empty tube is 6.0 mm.

4. According to claim 1, the novel oil-cooling cable structure is characterized in that: The first conductive core is formed by twisting a plurality of copper foil wires.

5. According to claim 1, the novel oil-cooling cable structure is characterized in that: The second conductor core is formed by twisting a bulletproof wire and three copper foil wires.

6. According to claim 1, the novel oil-cooling cable structure is characterized in that: The third conductive wire core is a wire body formed by twisting a bulletproof wire and three copper foil wires, and a tinned copper layer is coated on the outer side of the wire body.

7. The novel oil-cooling cable structure according to claim 1 is characterized in that: The second composite core layer includes an insulating layer and eight fourth conductive cores wrapped in the insulating layer, wherein one fourth conductive core serves as a center line, and the remaining seven fourth conductive cores are arranged around the center line.

8. The novel oil-cooling cable structure according to claim 1 is characterized in that: The wire tube includes an isolation layer and an outer layer for covering the conductive body, and the outer layer is made of TPU material.

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