Multifunctional direct current charging pile cable

Abstract

The utility model relates to cable technical field discloses a kind of multifunctional direct current charging pile cable, including the outer sheath with the accommodating space being arranged inside, wire core group is arranged in the accommodating space, the wire core group includes main wire core, auxiliary power supply wire core, signal control wire core and protective ground wire core, the main wire core, the auxiliary power supply wire core, the signal control wire core and the protective ground wire core are all wrapped with insulating layer, the insulating layer is wrapped with shielding layer, filling layer is arranged in the accommodating space without wire core group, the outer sheath inner wall is provided with armored layer, part of the outer sheath outer wall is wrapped with split protective sheath.The utility model has the following advantages and effects: it can be targeted to add protective sheath outside cable outer sheath, prolong the service life of cable, reduce maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, and in particular to a multifunctional DC charging pile cable. Background Technology

[0002] With the rapid development of the new energy vehicle industry, DC fast charging technology has become an indispensable infrastructure due to its extremely high charging efficiency. As the "lifeline" connecting charging stations and electric vehicles, the performance and reliability of DC charging cables directly affect charging safety and user experience.

[0003] Currently, DC charging pile cables on the market typically consist of a conductor, an insulation layer, a shielding layer, and an outer sheath. To meet the demands of high current transmission, these cables often have a large outer diameter and weight, and are frequently dragged, bent, and wrapped in daily use, inevitably rubbing and scraping against rough surfaces such as the ground and curbs. Over time, the outermost sheath of the cable will experience severe wear, leading to cracking and peeling. This not only affects aesthetics but also exposes the internal shielding and insulation layers, causing them to lose their proper shielding effectiveness. Furthermore, the intrusion of moisture, dust, and oil can lead to decreased insulation performance, short circuits, or even breakdowns, resulting in serious safety accidents and significantly shortening the cable's lifespan.

[0004] In existing technologies, two methods are commonly used to solve the wear problem: one is to increase the overall thickness of the cable's outer sheath or use more wear-resistant materials (such as high-strength TPU), but this will significantly increase the cable's manufacturing cost, weight, and rigidity, sacrificing its flexibility and making the already heavy cable even more difficult to plug, unplug, and store; the other is to simply wrap the cable with insulating tape after local wear, but this repair method is unsightly, not secure, and has limited protective effect, and is a temporary measure. Utility Model Content

[0005] The purpose of this invention is to provide a multifunctional DC charging pile cable that can be designed to add a protective sleeve to the outer sheath of the cable, thereby extending the cable's service life and reducing maintenance costs.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a multifunctional DC charging pile cable, comprising an outer sheath with an internal accommodating space, wherein a core assembly is provided within the accommodating space, the core assembly comprising a main core, an auxiliary power core, a signal control core, and a protective grounding core, wherein the main core, the auxiliary power core, the signal control core, and the protective grounding core are all wrapped with an insulation layer, and a shielding layer is wrapped outside the insulation layer; a filling layer is provided in the accommodating space where no core assembly is provided; an armor layer is provided on the inner sidewall of the outer sheath, and a split protective sleeve is provided on part of the outer sidewall of the outer sheath.

[0007] By adopting the above technical solution, and by adding replaceable split-type protective sleeves to the parts of the cable that frequently come into contact with the ground or experience wear, the protective sleeves act as sacrificial layers, directly bearing mechanical wear and chemical corrosion. When the protective sleeves wear to their limit, they only need to be replaced, avoiding the huge economic loss of replacing the entire expensive cable due to external wear, thereby significantly reducing the total life-cycle use and maintenance costs of the cable.

[0008] A further feature of this invention is that the split protective sleeve includes a first protective shell and a second protective shell that are hinged to each other and are in a semi-circular shape, and the first protective shell and the second protective shell are connected by a detachable component.

[0009] By adopting the above technical solution, the first and second protective shells, which are hinged to each other, can be installed and fixed on the outer wall of the outer sheath or removed and replaced from the outer wall of the outer sheath through detachable components. Protective shells of different materials or thicknesses can be replaced as needed, which can improve the adaptability and durability of the cable.

[0010] A further feature of this invention is that the first protective shell and the second protective shell are hinged together by a hinge.

[0011] By adopting the above technical solution, it is easier to disassemble and assemble the split-type protective sleeve.

[0012] A further feature of this invention is that the detachable component includes a fixing plate fixed to the side of the first protective shell away from the hinge, elastic elements sliding on both sides of the fixing plate, and a connecting plate fixed to the side of the second protective shell away from the hinge, the connecting plate being provided with a slot for the elastic elements to be engaged.

[0013] By adopting the above technical solution, during installation, the cable portion is placed inside the second protective shell, the first protective shell is rotated to cover the portion of the cable not placed inside the second protective shell, and the first protective shell and the fixing plate are pressed down to make the elastic element snap into the slot, thereby fixing the first and second protective shells relative to each other, so as to quickly install the split protective sleeve on the outer wall of the cable sheath to protect the cable.

[0014] A further feature of this invention is that: the fixed plate is provided with sliding grooves on both sides, and a spring is fixed between one end of the elastic element located in the sliding groove and the inner wall of the sliding groove, and the end of the elastic element away from the spring is provided with an arc-shaped head that can be inserted into the slot.

[0015] By adopting the above technical solution, when the first protective shell and the fixing plate are pressed down, the elastic element, under the push of the spring, has its arc-shaped end head inserted into the slot. When it is necessary to remove the protective sleeve, the first protective shell is pulled to rotate it away from the second protective shell, causing the arc-shaped end head of the elastic element to move out of the slot, the spring to compress, and then the cable to be removed.

[0016] A further feature of this invention is that the first protective shell is provided with a groove.

[0017] By adopting the above technical solution, the groove is used to provide support for the operator's hand to pull the first protective shell, improving the convenience of disassembly and assembly.

[0018] A further feature of this invention is that both the first protective shell and the second protective shell are provided with reflective strips.

[0019] By adopting the above technical solution, reflective strips are used to warn pedestrians or charging station staff to avoid tripping over the cables. They can also remind drivers of the location of the cables, reducing the risk of vehicles running over the cables and further reducing the possibility of cable damage.

[0020] A further feature of this invention is that the inner wall of the split protective sleeve is provided with a padding layer.

[0021] By adopting the above technical solution, the padding layer is used to improve the tightness of the connection between the protective sleeve and the cable, which can effectively eliminate looseness and gaps, and can also absorb external impacts and minor vibrations generated inside the cable, providing additional protection.

[0022] The beneficial effects of this utility model are:

[0023] 1. By adding replaceable split-type protective sleeves to the cable, the protective sleeves act as a sacrificial layer, directly bearing mechanical wear and chemical corrosion. When the protective sleeves wear to their limit, they only need to be replaced, avoiding the huge economic loss of replacing the entire expensive cable due to external wear, thereby significantly reducing the cable's total life-cycle usage and maintenance costs;

[0024] 2. Add reflective strips to the outside of the protective cover to warn pedestrians or charging station staff to avoid tripping over the cable. It can also remind drivers of the cable's location, reducing the risk of vehicles running over the cable and further reducing the possibility of cable damage.

[0025] 3. An additional padding layer is added inside the protective sleeve to improve the tightness of the connection between the protective sleeve and the cable. This can effectively eliminate looseness and gaps, and also absorb external impacts and minor vibrations generated inside the cable, providing extra protection. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the cross-sectional structure of this utility model.

[0028] Figure 2 This is an axial cross-sectional view showing the connection relationship between the outer sheath, the fixing plate, and the connecting plate in this utility model.

[0029] In the diagram, 1. Outer sheath; 2. Core assembly; 21. Main core; 22. Auxiliary power core; 23. Signal control core; 24. Protective grounding core; 25. Insulation layer; 26. Shielding layer; 3. Filling layer; 4. Armoring layer; 5. Split-type protective sleeve; 51. First protective shell; 52. Second protective shell; 53. Hinge; 54. Fixing plate; 55. Elastic element; 56. Connecting plate; 57. Slot; 58. Slide groove; 59. Spring; 6. Groove. Detailed Implementation

[0030] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0031] Example 1: A multifunctional DC charging pile cable, such as Figure 1 As shown, the device includes an outer sheath 1 with an internal accommodating space, and a core assembly 2 within the accommodating space. The core assembly 2 includes a main core 21, an auxiliary power core 22, a signal control core 23, and a protective grounding core 24. The main core 21, auxiliary power core 22, signal control core 23, and protective grounding core 24 are all wrapped with an insulation layer 25, and the insulation layer 25 is wrapped with a shielding layer 26. A filling layer 3 is provided in the accommodating space where the core assembly 2 is not located. An armor layer 4 is provided on the inner wall of the outer sheath 1, and a split protective sleeve 5 is wrapped on part of the outer wall of the outer sheath 1.

[0032] The main conductor 21 is used for DC power transmission and consists of multiple strands of extremely fine copper wire. The auxiliary power conductor 22 provides low-voltage power to the battery management system (BMS) of the electric vehicle and uses a copper conductor with a smaller cross-sectional area than the main conductor 21. The signal control conductor 23 transmits communication data between the charging pile and the vehicle's BMS, controlling charging start / stop, power, and monitoring status; it uses a twisted pair structure of ultra-fine copper wire. The protective grounding conductor 24 prevents electric shock accidents and uses a copper conductor. The insulation layer 25 wraps around each conductor to prevent short circuits and leakage between different conductors or between a conductor and the outside environment; it uses cross-linked polyethylene, thermoplastic polyolefin, etc. The shielding layer 26 prevents the strong magnetic field generated by the high voltage and high current inside the cable from radiating outwards and also protects the internal control signal lines from interference from the external electromagnetic environment; it uses copper wire braided shielding or aluminum-plastic composite tape wrapping shielding. The filler layer 3 fills the gaps left after the cores are twisted together, maintaining the circular cross-section of the cable and enhancing its compressive and tensile strength. It is made of polypropylene (PP) rope, hemp rope, elastic fibers, or foam materials. The armor layer 4 provides mechanical protection and is made of steel wire or steel tape. The outer sheath 1 protects the cable and is made of thermoplastic polyurethane, etc.

[0033] By adding replaceable split-type protective sleeves 5 to the parts of the cable that frequently come into contact with the ground or experience wear, the protective sleeves act as sacrificial layers, directly bearing the mechanical wear and chemical corrosion. When the protective sleeves wear to their limit, they only need to be replaced, avoiding the huge economic loss of replacing the entire expensive cable due to external wear, thereby significantly reducing the overall life-cycle use and maintenance costs of the cable. Multiple sets of split-type protective sleeves 5 can be installed outside the outer sheath 1.

[0034] like Figure 1 As shown, the split-type protective sleeve 5 includes a first protective shell 51 and a second protective shell 52 that are hinged to each other in a semi-circular shape. The first protective shell 51 and the second protective shell 52 are connected by a detachable component. The hinged first protective shell 51 and the second protective shell 52 can be installed and fixed to the outer wall of the outer sheath 1 or removed and replaced from the outer wall of the outer sheath 1 through the detachable component. It is possible to replace the protective sleeve with one of different materials or thicknesses as needed, which can improve the adaptability and durability of the cable.

[0035] As a further feature of this invention, the sides of the first protective shell 51 and the second protective shell 52 are hinged together by a hinge 53, which facilitates the assembly and disassembly of the split protective sleeve 5.

[0036] like Figure 2As shown, the detachable assembly includes a fixing plate 54 fixed to the side of the first protective shell 51 away from the hinge 53, with elastic elements 55 sliding on both sides of the fixing plate 54. A connecting plate 56 is fixed to the side of the second protective shell 52 away from the hinge 53, and the connecting plate 56 has a slot 57 for the elastic elements 55 to be inserted. During installation, the cable portion is placed inside the second protective shell 52, the first protective shell 51 is rotated to cover the portion of the cable not placed inside the second protective shell 52, and the first protective shell 51 and the fixing plate 54 are pressed down to make the elastic elements 55 engage in the slot 57, thereby fixing the first protective shell 51 and the second protective shell 52 relative to each other, so as to quickly install the split protective sleeve 5 on the outer wall of the cable outer sheath 1 to protect the cable.

[0037] As a further feature of this invention, the detachable component can also be configured as a snap-fit ​​structure, such as a spring-loaded snap-fit ​​or a latch-type snap-fit. Specifically, the spring-loaded snap-fit ​​has a latch on one side of the first protective shell 51 and a corresponding groove 57 on the other side of the second protective shell 52. When the first protective shell 51 and the second protective shell 52 are closed, the beveled surface of the latch first contacts the edge of the groove 57, and the elastic arm bends under pressure. When the hook passes the edge of the groove 57, the elastic arm springs back, and the hook falls into the groove 6, achieving locking. To open, pinch the end of the elastic arm with your fingers to disengage the hook from the groove 6.

[0038] like Figure 2 As shown, the fixing plate 54 has grooves 58 on both sides. One end of the elastic element 55 is located within the groove 58, and a spring 59 is fixed between it and the inner wall of the groove 58. The end of the elastic element 55 away from the spring 59 is configured with an arc-shaped head that can be inserted into a slot 57. When the first protective shell 51 and the fixing plate 54 are pressed down, the arc-shaped head of the elastic element 55 is pushed by the spring 59 and inserted into the slot 57. When it is necessary to remove the protective sleeve, the first protective shell 51 is pulled to rotate it away from the second protective shell 52, causing the arc-shaped head of the elastic element 55 to move out of the slot 57, compressing the spring 59, and then removing the cable.

[0039] As a further feature of this invention, a groove 6 is provided on the first protective shell 51. The groove 6 is used to provide support for the operator's hand to pull the first protective shell 51, thereby improving the ease of disassembly and assembly.

[0040] As a further feature of this invention, anti-slip textures are provided on the first protective shell 51, which also facilitates the operator in pulling the first protective shell 51.

[0041] As a further feature of this invention, reflective strips are provided on both the first protective shell 51 and the second protective shell 52. The reflective strips are used to warn pedestrians or charging station staff to avoid tripping over the cable, and can also remind drivers of the cable's location, reducing the risk of vehicles running over the cable and further reducing the possibility of cable damage.

[0042] As a further feature of this invention, a padding layer is provided on the inner wall of the split protective sleeve 5. The padding layer is used to improve the tightness of the connection between the protective sleeve and the cable, effectively eliminating looseness and gaps, and also absorbing external impacts and minor vibrations generated inside the cable, providing additional protection. The padding layer can be made of closed-cell foam material or thermoplastic elastomer, etc.

Claims

1. A multifunctional DC charging pile cable, comprising an outer sheath (1) with an internal accommodating space, characterized in that: The accommodating space is provided with a core assembly (2), which includes a main core (21), an auxiliary power core (22), a signal control core (23), and a protective grounding core (24). The main core (21), the auxiliary power core (22), the signal control core (23), and the protective grounding core (24) are all wrapped with an insulation layer (25). The insulation layer (25) is wrapped with a shielding layer (26). The accommodating space is provided with a filling layer (3) where the core assembly (2) is not provided. The inner wall of the outer sheath (1) is provided with an armor layer (4), and part of the outer wall of the outer sheath (1) is wrapped with a split protective sleeve (5).

2. The multifunctional DC charging pile cable according to claim 1, characterized in that: The split protective sleeve (5) includes a first protective shell (51) and a second protective shell (52) that are hinged to each other and are in a semi-circular shape. The first protective shell (51) and the second protective shell (52) are connected by a detachable component.

3. The multifunctional DC charging pile cable according to claim 2, characterized in that: The first protective shell (51) and the second protective shell (52) are hinged together by a hinge (53) on their sides.

4. The multifunctional DC charging pile cable according to claim 3, characterized in that: The detachable component includes a fixing plate (54) fixed to the side of the first protective shell (51) away from the hinge (53), elastic elements (55) sliding on both sides of the fixing plate (54), and a connecting plate (56) fixed to the side of the second protective shell (52) away from the hinge (53), and the connecting plate (56) is provided with a slot (57) for the elastic elements (55) to be inserted.

5. A multifunctional DC charging pile cable according to claim 4, characterized in that: The fixed plate (54) is provided with sliding grooves (58) on both sides. The elastic element (55) is located in the sliding groove (58) with one end fixed to the inner wall of the sliding groove (58) with a spring (59). The end of the elastic element (55) away from the spring (59) is set as an arc-shaped head that can be inserted into the slot (57).

6. A multifunctional DC charging pile cable according to claim 4, characterized in that: The first protective shell (51) is provided with a groove (6).

7. A multifunctional DC charging pile cable according to claim 2, characterized in that: Reflective strips are provided on both the first protective shell (51) and the second protective shell (52).

8. The multifunctional DC charging pile cable according to claim 1, characterized in that: The inner wall of the split protective sleeve (5) is provided with a padding layer.

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