High-power cable
By using a cable design with a hollow main conductor and a spiral secondary conductor structure, combined with an internal circulating coolant, the problem of insufficient cable heat dissipation capacity is solved, achieving effective heat dissipation and increased current carrying capacity for short-distance, high-power power transmission.
Patent Information
- Application Number
- CN202422687135.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-05
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-11-05
AI Technical Summary
Existing cables have insufficient heat dissipation capacity when transmitting high-power electricity, resulting in limited current carrying capacity. In particular, there is a lack of effective solutions for short-distance power transmission facilities without step-up or step-down devices.
A high-power cable was designed, which adopts a hollow main conductor and a spiral secondary conductor structure with internal circulating coolant. The combination of spiral winding of the secondary conductor and the main conductor and the insulating sleeve enhances heat dissipation and improves conductor strength.
It achieves effective heat dissipation for short-distance, high-power power transmission, increases the current carrying capacity of the cable, and ensures conductor stability through an external circulating cooling device.
Smart Images
Figure CN223582738U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to wire and cable technical field especially a kind of high-power cable. BACKGROUND
[0002] In general, the ability of power cable to transmit power is affected by the heat dissipation capacity of the cable, and the carrying capacity of the cable is a certain value under certain conditions. Since superconductors do not have resistance, they do not have the possibility of heating, so their carrying capacity is very large. However, ordinary power cables will always remain in a state of heating due to the presence of resistance. The greater the current, the greater the heat generation. Increasing the heat dissipation capacity can increase the carrying capacity of the cable.
[0003] The heat dissipation capacity of existing cables is insufficient. When transmitting high power, it can be achieved by increasing the voltage. However, for some power transmission facilities with short distances and without voltage conversion devices, only cables with large conductor diameters can be selected, such as super-fast charging stations for electric vehicles, short-distance power transmission between devices in energy storage power stations, etc. SUMMARY
[0004] The technical problem to be solved by the utility model is to provide a high-power cable with good heat dissipation capacity and suitable for short-distance high-power power transmission.
[0005] The technical solution adopted by the utility model to solve its technical problem is: a high-power cable has at least one core wire, the core wire has a main conductor, a secondary conductor and an insulating sleeve, the main conductor is a hollow cylindrical conductor that can circulate cooling liquid inside, the left and right ends of the main conductor are respectively a first connection end and a second connection end, the secondary conductor has a winding section spirally wound around the outer wall of the main conductor and a third connection end and a fourth connection end respectively extending leftward and rightward from the left and right ends of the winding section, the first connection end and the third connection end are the input ends of the cable, the second connection end and the fourth connection end are the output ends of the cable, and the insulating sleeve is extruded around the outer part of the main conductor and the secondary conductor.
[0006] Specifically, the cross section of the secondary conductor is circular.
[0007] Specifically, the pitch of the spiral secondary conductor is equal to the diameter of the cross section of the secondary conductor.
[0008] Specifically, to increase the contact area of the secondary conductor and the main conductor and improve the heat dissipation of the secondary conductor, the cross section of the secondary conductor is rectangular.
[0009] The utility model discloses a beneficial effect is: the utility model discloses a hollow main conductor and spiral secondary conductor's form is set up, through the external circulation cooling device, makes the cable can solve the problem of short distance high -power power transmission, and spiral secondary conductor can improve the strength of hollow main conductor, prevents the pipe body deformation, and the coolant can play the cooling effect to main conductor and secondary conductor. BRIEF DESCRIPTION OF DRAWINGS
[0010] Figure 1 It is the front view of a core wire of the utility model;
[0011] Figure 2 It is Figure 1 A-A section view of it;
[0012] Figure 3 It is the schematic diagram of the core wire of the utility model connects circulation coolant;
[0013] Figure 4 It is the cross section schematic diagram of the utility model with three core wires.
[0014] In the drawing: 1, main conductor, 1-1, first wiring end, 1-2, second wiring end;
[0015] 2, secondary conductor, 2-1, winding section, 2-2, third wiring end, 2-3, fourth wiring end;
[0016] 3, insulating sleeve;
[0017] 4, outer sheath. DETAILED DESCRIPTION
[0018] The technical scheme in the embodiment of the utility model is described in detail below in combination with the drawings of the utility model specification.
[0019] As attached Figure 1 A kind of high-power cable, has a core wire, core wire has main conductor 1, secondary conductor 2 and insulating sleeve 3, in combination with attached Figure 2 , main conductor 1 is the hollow cylindrical conductor of circulating coolant that can flow in the inside, the left and right ends of main conductor 1 are first wiring end 1-1 and second wiring end 1-2 respectively, secondary conductor 2 has winding section 2-1 that is spirally wound in the outer wall of main conductor 1 and third wiring end 2-2 and fourth wiring end 2-3 that are respectively extended out to left and right from the left and right ends of winding section 2-1, first wiring end 1-1 and third wiring end 2-2 are the input end of cable, second wiring 1-2 end and fourth wiring end 2-3 are the output end of cable, insulating sleeve 3 is extruded and is wrapped in the outside of main conductor 1 and secondary conductor 2, and each wiring end is the insulating sleeve 3 that extends.
[0020] The cross section of the sub-conductor 2 is circular, the pitch of the helical sub-conductor 2 is greater than the diameter of the cross section of the sub-conductor 2, and the extruded insulation sleeve 3 is extruded into the adjacent turns of the sub-conductor 2; of course, the sub-conductor 2 can also be in another tightly wound structure, i.e., the pitch of the helical sub-conductor 2 is equal to the diameter of the cross section of the sub-conductor 2.
[0021] The cross section of the sub-conductor 2 can also be rectangular.
[0022] The cable of the utility model can also be Figure 4 As shown in the figure, the cable has three core wires, and when the cable has three core wires, the cable is provided with an outer sheath 4 wrapping the three core wires.
[0023] Taking one core wire as an example, the structure of the core wire connecting the cooling liquid circulating pump and the cooling liquid heat exchanger is as shown in the figure. Figure 3
[0024] The principles and implementation modes of the utility model are described by applying specific examples in this paper, and the above description of the examples is only used to help understand the method of the utility model and its core idea; meanwhile, for the general technical personnel in the field, according to the idea of the utility model, the specific implementation mode and the application range will be changed. In conclusion, the content of the specification should not be understood as the limitation of the utility model.
Claims
1. A high-power cable, characterized in that: The cable has at least one core wire, which has a main conductor (1), a secondary conductor (2) and an insulating sleeve (3). The main conductor (1) is a hollow cylindrical conductor through which circulating coolant can flow. The left and right ends of the main conductor (1) are a first terminal (1-1) and a second terminal (1-2), respectively. The secondary conductor (2) has a spiral section (2-1) that is spirally wound around the outer wall of the main conductor (1) and a third terminal (2-2) and a fourth terminal (2-3) that extend to the left and right from the left and right ends of the spiral section (2-1), respectively. The first terminal (1-1) and the third terminal (2-2) are the input ends of the cable, and the second terminal (1-2) and the fourth terminal (2-3) are the output ends of the cable. The insulating sleeve (3) is extruded around the main conductor (1) and the secondary conductor (2).
2. The high-power cable according to claim 1, characterized in that: The cross-section of the secondary conductor (2) is circular.
3. The high-power cable according to claim 2, characterized in that: The pitch of the helical secondary conductor (2) is equal to the diameter of the cross-section of the secondary conductor (2).
4. The high-power cable according to claim 1, characterized in that: The cross-section of the secondary conductor (2) is rectangular.