A direct current charging cable

Abstract

The utility model discloses a direct current charging cable belongs to cable field, include: two power line group, and power line group includes the cooling pipe, power conductor and power insulation layer that wrap in proper order, core non -shielded control line group, core shielded control line group, auxiliary power cord and ground wire, and the sheath that wraps in power line group's power insulation layer, core non -shielded control line group, core shielded control line group, auxiliary power cord and ground wire outside, core non -shielded control line group includes and wraps in proper order first control conductor group and winding layer, still includes the filling rope between first control conductor group and winding layer, and the sheath wraps in winding layer outside. First control conductor group includes and wraps in proper order first control conductor and first control insulation layer, and winding layer wraps in first control insulation layer outside. The utility model discloses technical effect lies in it not only quality is small, and the current -carrying capacity is high.

Description

Technical Field

[0001] This utility model relates to cables, and more particularly to a DC charging cable. Background Technology

[0002] DC charging cables are a key component in DC fast charging (DCFC) systems for electric vehicles, used to connect charging stations to vehicle batteries and directly transmit high-power DC power to achieve fast charging.

[0003] Because the DC charging cables consist of multiple wire groups, they tend to be heavy, resulting in poor ease of use. In addition, the DC charging cables have poor heat dissipation performance, which tends to result in low current carrying capacity. Utility Model Content

[0004] Purpose of the utility model: The purpose of this utility model is to provide a DC charging cable that is not only lightweight but also has a high current carrying capacity.

[0005] Technical solution:

[0006] A DC charging cable, comprising:

[0007] Two power line groups, each power line group comprising a cooling pipe, a power conductor, and a power insulation layer wrapped together in sequence;

[0008] Unshielded control wire assembly, shielded control wire assembly, auxiliary power supply wire, and ground wire;

[0009] The sheath covering the power insulation layer, unshielded control wire group, shielded control wire group, auxiliary power line, and ground wire of the power line group.

[0010] Optionally, the core unshielded control wire assembly includes a first control conductor assembly and a winding layer wrapped together in sequence, and also includes a filler rope located between the first control conductor assembly and the winding layer, with the sheath wrapped around the winding layer.

[0011] Optionally, the first control conductor group includes a first control conductor and a first control insulation layer wrapped together in sequence, with the winding layer wrapped around the first control insulation layer.

[0012] Optionally, the core shielded control line group includes a second control conductor group and a shielding layer wrapped in sequence, with the sheath wrapped around the shielding layer.

[0013] Optionally, the second control conductor group includes a second control conductor and a second control insulation layer wrapped together in sequence, with the shielding layer wrapped around the second control insulation layer.

[0014] Optionally, it may also include a spiral reinforcing tube fitted over the sheath.

[0015] Optionally, the spiral reinforcing tube includes:

[0016] A polyether-type polyurethane matrix fitted over the sheath;

[0017] Kevlar bulletproof rope located within the polyether-type polyurethane matrix.

[0018] Optionally, it also includes: a filling portion between the sheath and the power insulation layer of the power line group, the unshielded control line group, the shielded control line group, the auxiliary power line and the ground wire.

[0019] Beneficial effects:

[0020] (1) The cooling pipe is used to pass the coolant, specifically through the two cooling pipes of the two power line groups, to carry out "one in and one out interconnected" circulation cooling, which is conducive to improving the current carrying capacity of the DC charging cable in this scheme;

[0021] (2) The core unshielded control line group is used to transmit signals such as temperature monitoring, so the shielding requirement is not high. Using an unshielded method makes it easier to reduce the quality of the DC charging cable in this scheme and also to reduce costs.

[0022] (3) The polyether-type polyurethane matrix combined with Kevlar bulletproof rope makes the spiral reinforcing tube of this solution have excellent properties such as low density, high strength, tear resistance, drag resistance, flame retardancy and weather resistance, thereby improving service life. Attached Figure Description

[0023] Figure 1 This is one of the structural diagrams of a DC charging cable according to Embodiment 1 of this utility model;

[0024] Figure 2 This is a structural diagram of the core unshielded control line assembly of Embodiment 1 of this utility model;

[0025] Figure 3 This is a structural diagram of the core shielding control line assembly of Embodiment 1 of this utility model;

[0026] Figure 4 This is a second structural diagram of a DC charging cable according to Embodiment 1 of this utility model;

[0027] In the diagram: 1. Power line assembly; 11. Cooling pipe; 12. Power conductor; 13. Power insulation layer; 2. Core unshielded control line assembly; 21. First control conductor assembly; 211. First control conductor; 212. First control insulation layer; 22. Filler rope; 23. Wrapping layer; 3. Core shielded control line assembly; 31. Second control conductor assembly; 311. Second control conductor; 312. Second control insulation layer; 32. Shielding layer; 4. Auxiliary power line; 5. Ground wire; 6. Sheath; 7. Spiral reinforcing tube; 8. Filler section. Detailed Implementation

[0028] To make the technical solution of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] The present application will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the utility model. Furthermore, it should be noted that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings. The terms "first," "second," etc., used in this utility model are provided for the convenience of describing the technical solution of this utility model and have no specific limiting effect; they are all general terms and do not constitute a limitation on the technical solution of this utility model. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Multiple technical solutions in the same embodiment, as well as multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions that do not contradict or conflict, all of which are within the scope of protection claimed by this utility model.

[0030] Example 1

[0031] like Figure 1 This embodiment provides a DC charging cable, including: two power line groups 1, each power line group 1 including a cooling pipe 11, a power conductor 12 and a power insulation layer 13 wrapped in sequence; a core unshielded control line group 2, a core shielded control line group 3, an auxiliary power line 4 and a ground wire 5; and a sheath 6 wrapped around the power insulation layer 13, the core unshielded control line group 2, the core shielded control line group 3, the auxiliary power line 4 and the ground wire 5 of the power line group 1.

[0032] Specifically, the power conductor 12 is used to transmit electrical energy. The number of power conductors 12 is preferably multiple, and they are evenly distributed along the outer periphery of the cooling pipe 11. The power conductor 12 is preferably made of soft copper wire composite stranding to increase flexibility. The cooling pipe 11 is used to pass coolant, specifically through the two cooling pipes 11 of the two power line groups 1, for "one-in-one-out interconnected" circulating cooling, which helps to increase the current carrying capacity of the DC charging cable in this solution. The material of the cooling pipe 11 is preferably nylon. The power insulation layer 13 is used for insulation, and the material of the power insulation layer 13 is preferably thermosetting polyolefin elastomer insulation material. The unshielded core control line group 2 is used to transmit signals such as temperature monitoring, so the shielding requirement is not high. Using an unshielded method helps to reduce the quality of the DC charging cable in this solution and also helps to reduce costs. The specific number of unshielded core control line groups 2 is not limited and can be two, three, etc. The shielded core control line group 3 is used to transmit main control signals. The auxiliary power line 4 is used for low-voltage power supply. The ground wire 5 is used for grounding to increase safety. The sheath 6 is used for protection, and the material of the sheath 6 is preferably polyurethane elastomer material.

[0033] Furthermore, such as Figure 2 The core unshielded control wire group 2 includes a first control conductor group 21 and a winding layer 23 wrapped in sequence, and also includes a filler rope 22 located between the first control conductor group 21 and the winding layer 23, and a sheath 6 wrapped around the winding layer 23.

[0034] Specifically, the first control conductor group 21 is used to transmit signals such as temperature monitoring; the winding layer 23 is used to prevent the first control conductor group 21 from loosening, and the material of the winding layer 23 is preferably non-woven fabric; the filling rope 22 is used for filling, and the material of the filling rope 22 is preferably fiber.

[0035] Furthermore, such as Figure 2 The first control conductor group 21 includes a first control conductor 211 and a first control insulation layer 212 wrapped in sequence, and a winding layer 23 wrapped around the first control insulation layer 212.

[0036] Specifically, the first control conductor 211 is used to transmit signals such as temperature monitoring, and the material of the first control conductor 211 can be copper, aluminum, etc.; the first control insulation layer 212 is used for insulation, and the material of the first control insulation layer 212 can be polyethylene, ethylene propylene rubber, etc.

[0037] Furthermore, such as Figure 3 The core shielded control line group 3 includes a second control conductor group 31 and a shielding layer 32 wrapped in sequence, and a sheath 6 is wrapped around the shielding layer 32.

[0038] Specifically, the second control conductor group 31 is used to transmit the main control signal; the shielding layer 32 is used for electromagnetic shielding, and the shielding layer 32 can be in the form of braided shielding.

[0039] Furthermore, such as Figure 3 The second control conductor group 31 includes a second control conductor 311 and a second control insulation layer 312 wrapped in sequence, and a shielding layer 32 wrapped around the second control insulation layer 312.

[0040] Specifically, the second control conductor 311 is used to transmit the main control signal, and the material of the second control conductor 311 can be copper, aluminum, etc.; the second control insulation layer 312 is used for insulation, and the material of the second control insulation layer 312 can be polyethylene, ethylene propylene rubber, etc.

[0041] Furthermore, such as Figure 1 and Figure 4 It also includes a spiral reinforcing tube 7 that is sleeved on the outside of the sheath 6.

[0042] Specifically, the spiral reinforcing tube 7 is used to increase the strength of the DC charging cable in this design, thereby facilitating an increase in service life.

[0043] Furthermore, such as Figure 1 and Figure 4 The spiral reinforcing tube 7 includes: a polyether-type polyurethane matrix sleeved outside the sheath 6; and a Kevlar bulletproof rope located within the polyether-type polyurethane matrix.

[0044] Specifically, the polyether-type polyurethane matrix combined with Kevlar bulletproof rope enables the spiral reinforcing tube 7 of this solution to have excellent properties such as low density, high strength, tear resistance, abrasion resistance, flame retardancy, and weather resistance, thereby improving its service life.

[0045] Furthermore, such as Figure 1 It also includes: a filling portion 8 between the sheath 6 and the power insulation layer 13, the unshielded control wire group 2, the shielded control wire group 3, the auxiliary power line 4 and the ground wire 5.

[0046] Specifically, the filling part 8 is used for filling, and the material of the filling part 8 can be polyester fiber, aramid fiber, etc.

[0047] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A DC charging cable, characterized in that, include: Two power line groups (1), each power line group (1) comprising a cooling pipe (11), a power conductor (12), and a power insulation layer (13) wrapped in sequence; The unshielded control wire group (2), the shielded control wire group (3), the auxiliary power supply line (4), and the ground wire (5); The sheath (6) covering the power insulation layer (13), the unshielded control wire group (2), the shielded control wire group (3), the auxiliary power line (4), and the ground wire (5) of the power wire group (1).

2. A direct current charging cable according to claim 1, characterized in that, The core unshielded control wire group (2) includes a first control conductor group (21) and a winding layer (23) wrapped in sequence, and also includes a filler rope (22) located between the first control conductor group (21) and the winding layer (23), and the sheath (6) is wrapped around the winding layer (23).

3. A DC charging cable according to claim 2, characterized in that, The first control conductor group (21) includes a first control conductor (211) and a first control insulation layer (212) wrapped in sequence, and the winding layer (23) is wrapped around the first control insulation layer (212).

4. A direct current charging cable according to any one of claims 1-3, characterized in that, The core shielded control line group (3) includes a second control conductor group (31) and a shielding layer (32) wrapped in sequence, and the sheath (6) is wrapped around the shielding layer (32).

5. A direct current charging cable according to claim 4, characterized in that, The second control conductor group (31) includes a second control conductor (311) and a second control insulation layer (312) wrapped in sequence, and the shielding layer (32) is wrapped around the second control insulation layer (312).

6. A direct current charging cable according to any one of claims 1-3, characterized in that, It also includes a spiral reinforcing tube (7) that is sleeved outside the sheath (6).

7. A DC charging cable according to claim 6, characterized in that, The spiral reinforcing tube (7) includes: A polyether-type polyurethane matrix fitted over the sheath (6); Kevlar bulletproof rope located within the polyether-type polyurethane matrix.

8. A direct current charging cable according to any one of claims 1-3, characterized in that, Also includes: The filling portion (8) is filled between the sheath (6) and the power insulation layer (13), the unshielded control wire group (2), the shielded control wire group (3), the auxiliary power line (4), and the ground wire (5) of the power line group (1).

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