Charging cable

Abstract

The utility model discloses a charging cable which comprises a center line group, a power line, an auxiliary line group and an outer sheath. The center line set is arranged along the axis of the charging cable, and the center line set at least comprises a first line and a second line which are twisted with each other. The power line comprises a positive electrode cable and a negative electrode cable. The power line and the auxiliary line group are twisted around the center line group; a cavity is formed in the outer sheath, and the center line group, the power line and the auxiliary line group are all arranged in the cavity. According to the technical scheme of the utility model, the strength of the whole center line group is improved, so that the charging cable is not easy to break even if being bent for multiple times.

Description

Technical Field

[0001] The utility model relates to the technical field of charging systems, and in particular to a charging cable. Background Art

[0002] With the rapid development of new energy vehicles, the technical requirements for the charging systems of new energy vehicles are becoming higher and higher. How to charge new energy vehicles quickly, safely and effectively has become an urgent problem to be solved. In the process of using a charging gun to charge new energy vehicles, the charging cable often needs to be dragged and bent. Existing cables are formed by twisting multiple other cores around a central core. The central core of the cable formed in this way is shorter than the other cores twisted around it. The central core is easy to break when bent, which brings great safety hazards to the entire charging system. Utility Model Content

[0003] The main purpose of the utility model is to provide a charging cable, aiming to ensure that the charging cable is not easily broken when being dragged or bent, thereby ensuring the stability and safety of the entire charging system.

[0004] To achieve the above-mentioned purpose, the utility model proposes a charging cable, comprising a center line group, a power line, an auxiliary line group and an outer sheath: the center line group is arranged along the axis of the charging cable, and the center line group at least includes a first line and a second line twisted with each other; the power line includes a positive cable and a negative cable; the power line and the auxiliary line group are twisted around the center line group; a cavity is formed in the outer sheath, and the center line group, the power line and the auxiliary line group are all arranged in the cavity.

[0005] Optionally, the first line (11) is a ground line, and the second line (12) is a ground line.

[0006] Optionally, the wire diameter of the first wire (11) is equal to the wire diameter of the second wire (12).

[0007] Optionally, the wire diameter of the first wire (11) is greater than the wire diameter of the second wire (12).

[0008] Optionally, the first line (11) is a ground line, and the second line (12) is a filling line.

[0009] Optionally, the wire diameter of the first wire (11) is greater than the wire diameter of the second wire (12).

[0010] Optionally, the positive cable (21) includes at least two conductors (20), and / or the negative cable (22) includes at least two conductors (20).

[0011] Optionally, the wire (20) comprises a bare conductor (201) and an insulating layer (202) covering the bare conductor (201).

[0012] Optionally, the first wire (11) and the second wire (12) rotate around the axis of the charging cable (100) while advancing in the axial direction.

[0013] Optionally, the auxiliary line group (3) includes at least two signal lines, and a signal line is provided between adjacent conductors (20).

[0014] Optionally, the charging cable (100) further comprises a non-woven fabric layer (5), and the non-woven fabric layer (5) is arranged on the inner side of the outer sheath (4).

[0015] Optionally, the charging cable (100) further comprises a polyester tape layer, wherein the polyester tape layer is arranged between the non-woven fabric layer (5) and the outer sheath (4).

[0016] Optionally, the central wire group (1) further comprises a third wire, and the third wire and the first wire (11) and the second wire (12) are twisted together.

[0017] A charging cable in a technical solution of the present invention is provided with a center wire group arranged along the axis of the charging cable, and the center wire group includes at least a first wire and a second wire twisted together. Such an arrangement enables the center wire group located on the axis of the charging cable to be formed by twisting a plurality of wires, thereby increasing the length of each wire in the center wire group, thereby improving the strength of the entire center wire group, so that the charging cable is not easily broken even if it is bent multiple times. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of an embodiment of a charging cable of the utility model.

[0020] Figure 2 It is a structural schematic diagram of another embodiment of the charging cable of the utility model.

[0021] Figure 3 It is a structural schematic diagram of another embodiment of the charging cable of the utility model.

[0022] Description of Figure Numbers:

[0023] 100. Charging cable; 1. Center line group; 11. First line; 12. Second line; 2. Power line; 20. Wire; 201. Bare conductor; 202. Insulation layer; 21. Positive cable; 22. Negative cable; 3. Auxiliary line group; 4. Outer sheath; 5. Non-woven fabric layer.

[0024] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0027] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, "and / or" in the full text includes three solutions. Taking A and / or B as an example, it includes technical solution A, technical solution B, and technical solution that satisfies both A and B; in addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0028] With the rapid development of new energy vehicles, the technical requirements for the charging systems of new energy vehicles are becoming higher and higher. How to charge new energy vehicles quickly, safely and effectively has become an urgent problem to be solved. In the process of using a charging gun to charge new energy vehicles, the charging cable often needs to be dragged and bent. Existing cables are formed by twisting multiple other cores around a central core. The central core of the cable formed in this way is shorter than the other cores twisted around it. The central core is easy to break when bent, which brings great safety hazards to the entire charging system.

[0029] In view of this, the present invention provides a charging cable 100 .

[0030] Please refer to Figure 1 , Figure 2 and Figure 3 In an embodiment of the utility model, a charging cable 100 includes a center line group 1, a power line 2, an auxiliary cable and an outer sheath 4. The center line group 1 is arranged along the axis of the charging cable 100, and the center line group 1 includes at least a first line 11 and a second line 12 twisted with each other; the power line 2 includes a positive cable 21 and a negative cable 22; the power line 2 and the auxiliary line group 3 are twisted around the center line group 1; a cavity is formed in the outer sheath 4, and the center line group 1, the power line 2, and the auxiliary line group 3 are all arranged in the cavity.

[0031] Through this embodiment, the charging cable 100 has an outer sheath 4, and a cavity is formed in the outer sheath 4, and the center line group 1, the power line 2, and the auxiliary line group 3 are all arranged in the cavity. At the same time, the charging cable 100 also has a center line group 1 arranged along the axis, and the center line group 1 at least includes a first line 11 and a second line 12 twisted together. At the same time, the charging cable 100 also has a power line 2, which provides power for the charging cable 100, and the power line 2 includes a positive cable 21 and a negative cable 22. The auxiliary line group 3 and the power line 2 are twisted around the center line group 1. By arranging the center line group 1 at the axis of the charging cable 100, and the center line group 1 includes a first line 11 and a second line 12 twisted together, the length of each line in the center line group 1 is increased, thereby improving the strength of the entire center line group 1, so that the charging cable 100 is not easy to break even if it is bent many times.

[0032] It can be understood that the center line group can be formed by twisting two lines, namely the first line 11 and the second line 12. Optionally, the center line group can also be formed by twisting more than two lines, which is not limited here.

[0033] Please refer to Figure 2 and Figure 3 The present invention proposes an embodiment, wherein the first line 11 is a ground line, and the second line 12 is a ground line.

[0034] Through this embodiment, the ground wire is split into the first wire 11 and the second wire 12. By twisting the first wire 11 and the second wire 12 together, the lengths of the first wire 11 and the second wire 12 are increased at the same time. When the charging cable 100 is bent, the twisted ground wires are not easily broken. In this way, the strength of the entire ground wire is improved, the cross-sectional area of ​​the ground wire is increased, and the current carrying capacity of the ground wire is increased.

[0035] Alternatively, if Figure 2As shown, the diameter of the first wire 11 is equal to the diameter of the second wire 12; or Figure 3 As shown, the wire diameter of the first wire 11 is greater than the wire diameter of the second wire 12 .

[0036] Please refer to Figure 1 The present invention proposes an embodiment, wherein the first line 11 is a ground line, and the second line 12 is a filling line.

[0037] Through this embodiment, the second wire 12 can be a filling wire. By twisting the ground wire and the filling wire, it can prevent the ground wire from being easily broken when the charging cable 100 is bent due to being too short, thereby affecting the safety and stability of the entire charging system.

[0038] The present invention proposes an embodiment in which the diameter of the first wire 11 is greater than the diameter of the second wire 12 .

[0039] It can be understood that when the second wire 12 is a filling wire, the wire diameter of the first wire 11 is set to be larger than the wire diameter of the second wire 12, so that the wire diameter of the ground wire is larger than the wire diameter of the filling wire, which is beneficial to increase the cross-sectional area of ​​the ground wire and improve the current carrying capacity of the ground wire.

[0040] The present invention proposes an embodiment in which the positive cable 21 includes at least two conductors 20 , and / or the negative cable 22 includes at least two conductors 20 .

[0041] Through this embodiment, the positive cable 21 and / or the negative cable 22 are split into at least two conductors 20, and the multiple conductors 20 and the auxiliary wire group 3 are twisted together around the central wire group 1. Such a configuration is conducive to reducing the wire diameter and improving the structural stability of the entire charging cable 100.

[0042] The present invention proposes an embodiment in which the wire 20 includes a bare conductor 201 and an insulating layer 202 covering the bare conductor 201 .

[0043] It can be understood that in order to ensure the electrical stability of the entire charging cable 100 and prevent short circuit and leakage, the wire 20 includes a bare conductor 201 and an insulating layer 202 covering the bare conductor 201 .

[0044] The present invention proposes an embodiment in which the first wire 11 and the second wire 12 rotate around the axis of the charging cable 100 and move forward along the axis direction at the same time.

[0045] It can be understood that by rotating the first wire 11 and the second wire 12 around the axis of the charging cable 100 while advancing along the axis direction, the lengths of the first wire 11 and the second wire 12 are increased compared to a solution in which the first wire 11 and the second wire 12 are directly extended parallel to the axis of the charging cable 100, so that the first wire 11 and the second wire 12 are not easily broken during the bending process of the charging cable 100.

[0046] The present invention proposes an embodiment in which the auxiliary wire set 3 includes at least two signal wires, and a signal wire is disposed between adjacent wires 20 .

[0047] It is understandable that signal lines can take many forms, such as Figure 1 As shown, the signal line can be a single metal conductor coated with insulating material, or a shielding material can be wrapped around the outside of multiple conductive cores, or multiple conductive cores can be directly wrapped with insulating material. In order to ensure the roundness of the entire charging cable 100, the auxiliary cable can include at least two signal lines, and a signal line is provided between adjacent wires 20. By providing a signal line with a smaller wire diameter between the wires 20 with a larger wire diameter, the signal line is located exactly in the gap between the two adjacent wires 20 and the outer sheath 4, which not only reduces the wire diameter, but also improves the roundness of the entire charging cable 100.

[0048] The present invention proposes an embodiment in which the charging cable 100 further includes a non-woven fabric layer 5 , and the non-woven fabric layer 5 is disposed inside the outer sheath 4 .

[0049] It can be understood that by providing the non-woven fabric layer 5 on the inner side of the outer sheath 4 , the entire charging cable 100 is more compact in structure and the wire diameter can be further reduced.

[0050] The present invention proposes an embodiment in which the charging cable 100 further includes a polyester tape layer (not shown), and the polyester tape layer is disposed between the non-woven fabric layer 5 and the outer sheath 4 .

[0051] It can be understood that by providing a polyester tape layer between the non-woven fabric layer 5 and the outer sheath 4 , the strength of the charging cable 100 is further improved, while the wire diameter is also further reduced.

[0052] The present invention proposes an embodiment in which the central wire group 1 further includes a third wire, and the third wire is twisted with the first wire 11 and the second wire 12 .

[0053] It is understandable that the center line group 1 may also include a third line. The third line and the first line 11 and the second line 12 are twisted together to form the center line group 1; it is understandable that the third line and the first line 11 and the second line 12 rotate around the axis of the charging cable 100 while advancing along the axis direction, thereby twisting together. Optionally, the third line may be a ground line or a filler line.

[0054] The above description is only an optional embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A charging cable (100), characterized in that: The charging cable (100) comprises: A center line group (1), the center line group (1) being arranged along the axis of the charging cable (100), the center line group (1) comprising at least a first line (11) and a second line (12) twisted together; A power line (2), the power line (2) comprising a positive cable (21) and a negative cable (22); An auxiliary line group (3), wherein the power line (2) and the auxiliary line group (3) are twisted around the central line group (1); An outer sheath (4), wherein a cavity is formed in the outer sheath (4), and the center line group (1), the power line (2), and the auxiliary line group (3) are all arranged in the cavity.

2. The charging cable (100) according to claim 1, characterized in that: The first line (11) is a ground line, and the second line (12) is a ground line.

3. The charging cable (100) according to claim 2, characterized in that: The wire diameter of the first wire (11) is equal to the wire diameter of the second wire (12).

4. The charging cable (100) according to claim 2, characterized in that: The wire diameter of the first wire (11) is greater than the wire diameter of the second wire (12).

5. The charging cable (100) according to claim 1, characterized in that: The first line (11) is a ground line, and the second line (12) is a fill line.

6. The charging cable (100) according to claim 5, characterized in that: The wire diameter of the first wire (11) is greater than the wire diameter of the second wire (12).

7. The charging cable (100) according to claim 1, characterized in that: The positive cable (21) includes at least two conductors (20), and / or the negative cable (22) includes at least two conductors (20).

8. The charging cable (100) according to claim 7, characterized in that: The wire (20) comprises a bare conductor (201) and an insulating layer (202) covering the bare conductor (201).

9. The charging cable (100) according to claim 1, characterized in that: The first wire (11) and the second wire (12) rotate around the axis of the charging cable (100) and advance along the axis direction.

10. The charging cable (100) according to claim 1, characterized in that: The auxiliary wire group (3) comprises at least two signal wires, and a signal wire is provided between adjacent wires (20).

11. The charging cable (100) according to claim 1, characterized in that: The charging cable (100) further comprises a non-woven fabric layer (5), wherein the non-woven fabric layer (5) is arranged on the inner side of the outer sheath (4).

12. The charging cable (100) according to claim 11, characterized in that: The charging cable (100) further comprises a polyester tape layer, wherein the polyester tape layer is arranged between the non-woven fabric layer (5) and the outer sheath (4).

13. The charging cable (100) according to claim 1, characterized in that: The central wire group (1) further comprises a third wire, and the third wire is twisted with the first wire (11) and the second wire (12).

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