CN218038677U

CN218038677U - High-power charging cable

Info

Publication number: CN218038677U
Application number: CN202221619638.XU
Authority: CN
Inventors: 崔久德
Original assignee: Wuxi Xinhongye Cable Technology Co ltd
Current assignee: Wuxi Xinhongye Cable Technology Co ltd
Priority date: 2022-06-25
Filing date: 2022-06-25
Publication date: 2022-12-13
Anticipated expiration: 2032-06-25

Abstract

The utility model discloses a high-power charging cable, include: the charging cable comprises a first conductor layer formed by stranding a plurality of first copper conductors, a first insulating layer coated on the outer side of the first conductor layer, and a first cooling pipe positioned in the center of the charging cable, wherein the plurality of first copper conductors are tightly stranded on the outer side of the first cooling pipe, a second cooling pipe is sleeved on the outer side of the first insulating layer, a gap layer is formed between the inner wall of the second cooling pipe and the outer surface of the first insulating layer, and cooling media are filled in the first cooling pipe and the gap layer. The utility model discloses can improve the carrying capacity of cable and reduce cable surface temperature, the carrying capacity is 2 to 3 times of equal cross-section high tension cable.

Description

High-power charging cable

Technical Field

The utility model relates to a high-power charging cable belongs to wire and cable and application technique field.

Background

With the rapid development of new energy electric vehicles, the overlong charging time and the heavier product quality become one of the key factors limiting the development of new energy electric vehicles. In order to reduce the charging time, the rapid charging is usually realized by increasing the charging current, wherein the charging current is increased from the original 250A to 500A, and the charging current is increased to 700A for individual vehicle types. The high-voltage cable with the traditional structure adopts a copper stranded conductor, the whole weight is heavier, and the current-carrying temperature of the conductor exceeds 200 ℃ under such a large current, so that the safety of the electric automobile is seriously influenced. Therefore, there is an urgent need in the market to develop a high voltage cable having light weight and high current carrying capacity.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a high-power charging cable, this high-power charging cable can improve the current-carrying capacity of cable and reduce cable surface temperature, and the current-carrying capacity is equal cross-section high tension cable 2 to 3 times.

In order to solve the technical problem, the utility model discloses a technical scheme is: a high power charging cable comprising: the charging cable comprises a first conductor layer formed by twisting a plurality of first copper conductors, a first insulating layer coated on the outer side of the first conductor layer, and a first cooling pipe positioned in the center of the charging cable, wherein the plurality of first copper conductors are tightly twisted on the outer side of the first cooling pipe, a second cooling pipe is sleeved on the outer side of the first insulating layer, a gap layer is formed between the inner wall of the second cooling pipe and the outer surface of the first insulating layer, and cooling media are filled in the first cooling pipe and the gap layer.

The further improved scheme in the technical scheme is as follows:

1. in the above scheme, the cooling medium is one of engine coolant, glycol solution, silicone oil and transformer oil.

2. In the above scheme, a sheath layer is arranged outside the second cooling pipe.

3. In the above scheme, the material of restrictive coating is in TPU, TPE, PVC elastomer.

4. In the above scheme, the first cooling pipe and the second cooling pipe are both round pipes.

5. In the scheme, the inner diameter of the first cooling pipe is 3 mm-5 mm.

6. In the scheme, the thickness of the tube wall of the first cooling tube and the second cooling tube is 0.5 mm-2.0 mm.

7. In the above scheme, the first cooling tube and the second cooling tube are made of one of TPEE, nylon, FEP, PFA, ETFE, silicone rubber, and XLPE.

8. In the scheme, the length of the gap layer in the radial direction is 1 mm-3 mm.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:

the utility model discloses high-power charging cable, it all covers with the cooling tube in inboard, the outside of conductor, and inside and outside cooling tube forms the return circuit, and the flow of inside cooling medium is realized to plus circulating pump, takes away the heat behind the cable current-carrying rapidly to improve the current-carrying capacity of cable and reduce cable surface temperature, the current-carrying capacity is equal cross-section high tension cable 2 to 3 times.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the high-power charging cable of the present invention;

fig. 2 is a schematic structural diagram of embodiment 2 of the high-power charging cable of the present invention;

figure 3 is the utility model discloses copper conductor's structure enlargements among high-power charging cable.

In the above drawings: 1. a first cooling pipe; 2. a first copper conductor; 3. a first insulating layer; 4. a second copper conductor; 5. a gap layer; 6. a second insulating layer; 7. a second cooling pipe; 8. a sheath layer; 9. copper monofilament.

Detailed Description

In the description of this patent, it is noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly and encompass, for example, both fixed and removable coupling as well as integral coupling; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The meaning of the above terms in this patent may be understood in a concrete sense to those of ordinary skill in the art.

Example 1: the utility model provides a high-power charging cable for connect fill electric pile and the rifle that charges in the high-power charging system of new energy automobile, include: the charging cable comprises a first conductor layer formed by twisting a plurality of first copper conductors 2, a first insulating layer 3 coated on the outer side of the first conductor layer, and a first cooling pipe 1 positioned in the center of the charging cable, wherein the plurality of first copper conductors 2 are tightly twisted on the outer side of the first cooling pipe 1, a second cooling pipe 7 is sleeved on the outer side of the first insulating layer 3, a gap layer 5 is formed between the inner wall of the second cooling pipe 7 and the outer surface of the first insulating layer 3, and cooling media capable of flowing circularly are filled in the first cooling pipe 1 and the gap layer 5.

The cooling medium is engine coolant; a sheath layer 8 is arranged outside the second cooling pipe 7; the material of the sheath layer 8 is a PVC elastomer;

the first cooling pipe 1 and the second cooling pipe 7 are both round pipes; the inner diameter of the first cooling pipe 1 is 4mm; the wall thickness of the first cooling pipe 1 and the second cooling pipe 7 is 1.0mm;

the first cooling pipe 1 and the second cooling pipe 7 are made of TPEE; the length of the gap layer 5 in the radial direction is 2mm.

Example 2: the utility model provides a high-power charging cable for connect fill electric pile and the rifle that charges in the high-power charging system of new energy automobile, include: the charging cable comprises a first conductor layer formed by twisting a plurality of first copper conductors 2, a first insulating layer 3 coated on the outer side of the first conductor layer, and a first cooling pipe 1 positioned in the center of the charging cable, wherein the plurality of first copper conductors 2 are tightly twisted on the outer side of the first cooling pipe 1, a second conductor layer formed by twisting a plurality of second copper conductors 4 is formed on the outer side of the first insulating layer 3, a second insulating layer 6 is coated on the outer side of the second conductor layer, a second cooling pipe 7 is sleeved on the outer side of the second insulating layer 6, a gap layer 5 is formed between the inner wall of the second cooling pipe 7 and the outer surface of the second insulating layer 6, and cooling media capable of flowing circularly are filled in the first cooling pipe 1 and the gap layer 5.

The first copper conductor 1 and the second copper conductor 4 are formed by twisting a plurality of strands in a certain twisting distance and a certain twisting direction, and each strand consists of a plurality of copper monofilaments 9; the diameter of the copper monofilament 9 is 0.15 to 0.25mm; the thickness of each of the first insulating layer 3 and the second insulating layer 6 is 0.5 mm to 2.0mm; the first insulating layer 3 and the second insulating layer 6 are made of one of XLPE, XLPO, FEP, and PFA;

the cooling medium is glycol solution; a sheath layer 8 is arranged outside the second cooling pipe 7; the material of the sheath layer 8 is TPU; the first cooling pipe 1 and the second cooling pipe 7 are both round pipes; the inner diameter of the first cooling pipe 1 is 5mm; the wall thicknesses of the first cooling pipe 1 and the second cooling pipe 7 are 2.0mm; the first cooling pipe 1 and the second cooling pipe 7 are made of silicon rubber; the length of the gap layer 5 in the radial direction is 3mm;

the first cooling pipe, the first conductor layer, the first insulating layer, the second conductor layer, the second insulating layer and the second cooling pipe form a coaxial structure to form a DC +/DC-current-carrying loop of the direct-current charging cable, the space of the cable is fully utilized, the size of the cable is reduced, electromagnetic interference resistance is better, cooling media such as cooling liquid are introduced into the space of the gap layer formed by the inner-layer cooling pipe and the outer-layer cooling pipe, the inner-layer cooling pipe and the outer-layer cooling pipe form loops, an external circulating pump realizes the flow of the internal cooling media, the heat generated by current carrying of the cable is taken away, the temperature is reduced, and therefore the current-carrying capacity of the cable is improved.

By adopting the high-power charging cable, the inner side and the outer side of the conductor are covered by the cooling pipes, the inner cooling pipe and the outer cooling pipe form a loop, the circulation pump is additionally arranged to realize the flow of an internal cooling medium, and the heat after the cable carries current is rapidly taken away, so that the current-carrying capacity of the cable is improved and the surface temperature of the cable is reduced, and the current-carrying capacity is 2 to 3 times of that of a high-voltage cable with the same section.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.

Claims

1. A high power charging cable comprising: the copper-clad multilayer printed circuit board comprises a first conductor layer formed by twisting a plurality of first copper conductors (2) and a first insulating layer (3) wrapping the outer side of the first conductor layer, and is characterized in that: the charging cable is characterized by further comprising a first cooling pipe (1) located in the center of the charging cable, a plurality of first copper conductors (2) are tightly twisted outside the first cooling pipe (1), a second cooling pipe (7) is sleeved outside the first insulating layer (3), a gap layer (5) is formed between the inner wall of the second cooling pipe (7) and the outer surface of the first insulating layer (3), and cooling media are filled in the first cooling pipe (1) and the gap layer (5).

2. The high power charging cable according to claim 1, wherein: the cooling medium is one of engine coolant, glycol solution, silicone oil and transformer oil.

3. The high power charging cable according to claim 1, wherein: and a sheath layer (8) is arranged on the outer side of the second cooling pipe (7).

4. The high power charging cable according to claim 3, wherein: the material of the sheath layer (8) is one of TPU, TPE and PVC elastomer.

5. The high power charging cable according to claim 1, wherein: the first cooling pipe (1) and the second cooling pipe (7) are round pipes.

6. The high power charging cable according to claim 5, wherein: the inner diameter of the first cooling pipe (1) is 3 mm-5 mm.

7. The high power charging cable according to claim 5, wherein: the thickness of the tube wall of the first cooling tube (1) and the second cooling tube (7) is 0.5 mm-2.0 mm.

8. The high power charging cable according to claim 1, wherein: the first cooling pipe (1) and the second cooling pipe (7) are made of one of TPEE, nylon, FEP, PFA, ETFE, silicon rubber and XLPE.

9. The high power charging cable according to claim 1, wherein: the length of the gap layer (5) in the radial direction is 1 mm-3 mm.