High-low voltage composite cable

Abstract

The utility model discloses a high and low voltage composite cable, comprising a high voltage conductor, a low voltage lead and an insulating layer, the high voltage conductor is a flat copper bar or aluminum bar, the insulating layer wraps the outer side of the high voltage conductor, at least one hole is arranged in the high voltage conductor, and the low voltage lead is arranged in the hole. The holes extending in the length direction of the high-voltage conductor penetrate through the end faces of the two ends of the high-voltage conductor, and the multiple low-voltage wires penetrate into the holes respectively. According to the utility model, organic combination of the high-voltage cable and the low-voltage cable is realized, installation and laying are facilitated, the required laying space is reduced, the production efficiency can be improved, good protection can be provided for the low-voltage cable on the basis of a simplified structure and a lightweight design, and the overall transmission stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy vehicle cables, and in particular to a high and low voltage composite cable. Background Art

[0002] New energy vehicles (NEVs) use unconventional fuels as their power source, or utilize conventional fuels and new onboard power systems. These vehicles feature advanced technical principles, new technologies, and new structures. Currently, the high-voltage and low-voltage wiring used in new energy vehicles are separate systems, requiring separate production and installation processes. This takes up considerable space and reduces production efficiency. Utility Model Content

[0003] The purpose of the utility model is to provide a high-low voltage composite cable, which realizes the organic combination of high and low voltage cables, is easy to install and lay, reduces the required laying space, improves production efficiency, and can also provide good protection for low voltage cables on the basis of streamlined structure and lightweight design, thereby improving the stability of overall transmission.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a high-low voltage composite cable, comprising: a high-voltage conductor, a low-voltage wire and an insulation layer, the high-voltage conductor is a flat copper busbar or aluminum busbar, the insulation layer is coated on the outside of the high-voltage conductor, at least one hole is opened inside the high-voltage conductor, the hole extending along the length direction of the high-voltage conductor passes through the end faces of both ends of the high-voltage conductor, and several low-voltage wires are each inserted into the hole.

[0005] The further improved scheme in the above technical scheme is as follows:

[0006] 1. In the above solution, each of the low-voltage wires includes: a central conductor and a low-voltage insulation layer covering the outside of the central conductor.

[0007] 2. In the above solution, the central conductor is formed by twisting a plurality of strand conductors.

[0008] 3. In the above solution, the central conductor is formed by twisting a plurality of copper wires or tinned copper wires.

[0009] 4. In the above solution, the holes are circular holes or square holes.

[0010] 5. In the above solution, one of the holes is provided at one end of the end surface of the central conductor, and the 2 to 6 low-voltage wires are all inserted into the hole.

[0011] 6. In the above solution, the two holes are respectively provided at both ends of the end surface of the central conductor, and 2 to 6 low-voltage wires are passed through each hole.

[0012] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0013] The utility model discloses a high-low voltage composite cable, in which the high-voltage conductor is a flat copper busbar or aluminum busbar, an insulating layer is coated on the outside of the high-voltage conductor, at least one hole is opened inside the high-voltage conductor, and the hole extending along the length direction of the high-voltage conductor passes through the end faces of both ends of the high-voltage conductor, and a plurality of low-voltage wires are respectively inserted into the hole, thereby realizing the organic combination of high and low voltage cables, facilitating installation and laying, reducing the required laying space, and improving production efficiency. It can also provide good protection for the low-voltage cable on the basis of a streamlined structure and lightweight design, thereby improving the stability of the overall transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Attachment Figure 1 This is a structural diagram of Example 1 of the high-low voltage composite cable of the utility model;

[0015] Attachment Figure 2 This is a structural diagram of a second embodiment of the high-low voltage composite cable of the present utility model;

[0016] Attachment Figure 3 For this utility model Figure 2 Enlarged schematic diagram of point A in the middle.

[0017] In the above figures: 1, high-voltage conductor; 2, insulation layer; 3, hole; 4, low-voltage wire; 41, center conductor; 42, low-voltage insulation layer. DETAILED DESCRIPTION

[0018] The present invention can be further understood through the specific embodiments given below, but they are not intended to limit the present invention.

[0019] Example 1: A high-low voltage composite cable, comprising: a high-voltage conductor 1, a low-voltage conductor 4, and an insulating layer 2. The high-voltage conductor 1 is a flat copper busbar. The insulating layer 2 is wrapped around the outside of the high-voltage conductor 1. The high-voltage conductor 1 has at least one hole 3 formed therein. The hole 3 extends along the length of the high-voltage conductor 1 and penetrates the end surfaces of both ends of the high-voltage conductor 1. A plurality of low-voltage conductors 4 are each inserted into the hole 3.

[0020] The central conductor of this patent adopts a flat copper busbar, which can be bent according to the actual laying scenario, thus facilitating installation and reducing the required laying space;

[0021] After the bending is completed, the low-voltage wire is inserted through the hole on the center conductor. Then, during processing, the hole side is stamped and shaped, and subsequent screw connection or ultrasonic welding is carried out, thus achieving an organic combination of high and low voltage cables. The holes also provide good protection for the low-voltage cable, thereby improving the stability of the overall transmission.

[0022] Each of the low-voltage wires 4 includes a central conductor 41 and a low-voltage insulating layer 42 covering the outer side of the central conductor 41 .

[0023] The central conductor 41 is formed by twisting a plurality of strand conductors.

[0024] The holes 3 are square holes.

[0025] One of the holes 3 is provided at one end of the end surface of the central conductor 41 , and the three low-voltage wires 4 are all inserted into the hole 3 .

[0026] The above-mentioned insulating layer 2 and low-voltage insulating layer 42 are both polyolefin XLPO insulating layers;

[0027] It adopts a new type of low-smoke halogen-free cross-linked polyolefin material with a temperature resistance grade of 150℃. Its hardness is 80±2A, the elongation at break is greater than 400%, and the tensile strength is greater than 12MPa. It has the properties of resistance to paint and solvent, high temperature bending and cracking resistance, good high temperature pressure performance, and improves the product's breakdown voltage.

[0028] The thickness of the insulating layer 2 and the low-voltage insulating layer 42 is 10 mm.

[0029] Example 2: A high-low voltage composite cable, comprising: a high-voltage conductor 1, a low-voltage conductor 4, and an insulation layer 2. The high-voltage conductor 1 is a flat aluminum bar. The insulation layer 2 is wrapped around the outside of the high-voltage conductor 1. The high-voltage conductor 1 has at least one hole 3 formed therein. The hole 3 extends along the length of the high-voltage conductor 1 and penetrates the end surfaces of both ends of the high-voltage conductor 1. A plurality of low-voltage conductors 4 are each inserted into the hole 3.

[0030] The central conductor of this patent adopts a flat aluminum bar, which can be bent according to the actual laying scenario, thereby facilitating installation and laying and reducing the required laying space, while also meeting the requirements of streamlined structure and lightweight design.

[0031] Each of the low-voltage wires 4 includes a central conductor 41 and a low-voltage insulating layer 42 covering the outer side of the central conductor 41 .

[0032] The central conductor 41 is formed by twisting a plurality of copper wires.

[0033] The hole 3 is a circular hole.

[0034] The two holes 3 are respectively provided at both ends of the end surface of the central conductor 41 , and five low-voltage wires 4 are passed through each of the holes 3 .

[0035] The above-mentioned insulation layer 2 and low-voltage insulation layer 42 are both nylon PA12 insulation layers;

[0036] Nylon PA12 material or polyolefin XLPO material is used. Among them, the nylon PA12 material used has the advantages of being resistant to alkali, oil, enzymes, inorganic dilute acids, aromatic hydrocarbons, etc., has good impact resistance and chemical stability, and is also a good electrical insulator. Like other polyamides, its insulation performance will not be affected by moisture.

[0037] The thickness of the insulating layer 2 and the low-voltage insulating layer 42 is 7 mm.

[0038] Further explanation of the embodiment:

[0039] The central conductor of this patented high- and low-voltage composite cable is a flat copper or aluminum busbar that can be bent according to the actual installation scenario, making it easier to install and reduce the required installation space, while also meeting the requirements of a streamlined structure and lightweight design.

[0040] After the bending is completed, the low-voltage wire is inserted through the hole on the center conductor. Then, during processing, the hole side is stamped and shaped, and subsequent screw connection or ultrasonic welding is carried out, thus achieving an organic combination of high and low voltage cables. The holes also provide good protection for the low-voltage cable and improve the overall transmission stability.

[0041] The insulation layer adopts nylon PA12 material or polyolefin XLPO material. Among them, the nylon PA12 material adopted has the advantages of being resistant to alkali, oil, enzyme, inorganic dilute acid, aromatic hydrocarbon, etc., has good impact resistance and chemical stability, is also a good electrical insulator, and like other polyamides, will not be affected by moisture in insulation performance. The new low-smoke halogen-free cross-linked polyolefin material with a temperature resistance grade of 150°C is adopted. Its hardness is 80±2A, elongation at break is greater than 400%, and tensile strength is greater than 12MPa. It has resistance to paint and solvent, high temperature bending cracking resistance, good high temperature pressure performance, and improves the product's breakdown voltage.

[0042] When the above-mentioned high- and low-voltage composite cable is used, it realizes the organic combination of high and low-voltage cables, facilitates installation and laying, reduces the required laying space, improves production efficiency, and can also provide good protection for low-voltage cables on the basis of streamlined structure and lightweight design, thereby improving the overall transmission stability.

[0043] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those familiar with the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications based on the spirit of the present invention are intended to be included in the scope of protection of the present invention.

Claims

1. A high-low voltage composite cable, comprising: A high-voltage conductor (1), a low-voltage wire (4) and an insulating layer (2), characterized in that: the high-voltage conductor (1) is a flat copper busbar or aluminum busbar, the insulating layer (2) is wrapped around the outside of the high-voltage conductor (1), at least one hole (3) is provided inside the high-voltage conductor (1), the hole (3) extending along the length direction of the high-voltage conductor (1) passes through the end faces of both ends of the high-voltage conductor (1), and a plurality of the low-voltage wires (4) are each inserted into the hole (3).

2. The high-low voltage composite cable according to claim 1, characterized in that: Each of the low-voltage wires (4) comprises a central conductor (41) and a low-voltage insulating layer (42) covering the outside of the central conductor (41).

3. The high-low voltage composite cable according to claim 2, characterized in that: The central conductor (41) is formed by twisting a plurality of strand conductors.

4. The high-low voltage composite cable according to claim 2, characterized in that: The central conductor (41) is formed by twisting a plurality of copper wires or tinned copper wires.

5. The high-low voltage composite cable according to claim 1, characterized in that: The hole (3) is a circular hole or a square hole.

6. The high-low voltage composite cable according to claim 1, characterized in that: One of the holes (3) is provided at one end of the end surface of the central conductor (41), and the two to six low-voltage wires (4) are all inserted into the hole (3).

7. The high-low voltage composite cable according to claim 1, characterized in that: The two holes (3) are respectively arranged at two ends of the end surface of the central conductor (41), and 2 to 6 low-voltage wires (4) are inserted into each hole (3).

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