Monitoring cable for charging pile electric cabinet

Abstract

The utility model relates to a monitoring cable for a charging pile electric cabinet, and belongs to the field of cables, the monitoring cable comprises a wire and an outer protective sleeve, the outer protective sleeve coaxially sleeves the wire, a shielding net sleeve made of a metal material is coaxially arranged between the wire and the outer protective sleeve, and an isolation layer is arranged between the shielding net sleeve and the wire. The shielding net sleeve isolates the internal and external electromagnetic environments, reduces the influence of the external magnetic field change on the internal wire, and achieves the purpose of reducing the electromagnetic induction current.

Description

Technical Field

[0001] The present application relates to the field of cables, and in particular to a monitoring cable for a charging pile electrical cabinet. Background Art

[0002] With growing global environmental awareness, new energy vehicles are becoming a mainstream market force. As crucial infrastructure supporting the new energy vehicle industry, charging piles are attracting increasing attention for their safety. Currently, most charging pile cabinets rely on manual inspections or simple temperature sensor monitoring for internal wiring. These traditional methods struggle to accurately and accurately reflect cable status in real time, preventing potential safety hazards from being detected promptly and limiting the overall safety of charging piles.

[0003] In order to improve the safety of charging piles, the industry has developed some solutions, including some simple current monitoring devices, which are used to indirectly judge the working status of the cable. However, due to the complex electromagnetic environment at the charging pile station, various factors can easily cause current fluctuations in the cable, so the accuracy is not high. Utility Model Content

[0004] In order to improve the above problems, the present application provides a monitoring cable for a charging pile electrical cabinet.

[0005] The present application provides a monitoring cable for a charging pile cabinet that adopts the following technical solution:

[0006] A monitoring cable for a charging pile electric cabinet comprises a conductor and an outer protective sleeve, wherein the outer protective sleeve is coaxially sleeved outside the conductor, a metal shielding mesh sleeve is coaxially arranged between the conductor and the outer protective sleeve, and an isolation layer is provided between the shielding mesh sleeve and the conductor.

[0007] By adopting the above technical solution, the shielding mesh isolates the internal and external electromagnetic environments, reduces the impact of external magnetic field changes on internal conductors, and achieves the purpose of reducing electromagnetic induced current.

[0008] Preferably, a drainage metal wire is provided between the shielding mesh and the isolation layer. The drainage metal wire is spirally wound outside the isolation layer, and the drainage metal wire is in contact with the inner side of the shielding mesh.

[0009] By adopting the above technical solution, the electromagnetic induction current generated on the shielding mesh can be discharged through the drainage metal wire.

[0010] Preferably, the isolation layer is formed by winding a waterproof tape, and the material of the waterproof tape is polytetrafluoroethylene.

[0011] By adopting the above technical solution, the isolation layer plays a role in waterproof protection for the wires.

[0012] Preferably, the thickness of the waterproof tape is 0.15-0.2 mm, and at the same position point of the isolation layer, the number of layers of the waterproof tape is 4-5.

[0013] Preferably, the shielding mesh is formed by winding metal ribbons, and at the same position point of the shielding mesh, the number of layers of the metal ribbons is 1.

[0014] Preferably, the conductor is a coaxial cable, comprising a central conductor, an insulating layer and a conductor barrel, wherein the insulating layer is located outside the central conductor and is coaxial with the central conductor, and the conductor barrel is coaxially sleeved outside the insulating layer.

[0015] Preferably, a positioning rib is provided between the shielding mesh and the isolation layer, the length direction of the positioning rib is consistent with the length direction of the wire, the positioning rib and the surface of the isolation layer are bonded, and the positioning rib is provided with a plurality of positioning grooves for the drainage wire to pass through on the side facing the isolation layer, and the plurality of positioning grooves are arranged in an array along the length direction of the positioning rib.

[0016] By adopting the above technical solution, the positioning ribs fix the winding spacing of the drainage wire through the positioning grooves, thereby improving the state stability of the drainage wire.

[0017] Preferably, the cross-sectional profile of the positioning rib includes a fitting arc, a transition arc and two connecting segments, the fitting arc is fitted with the isolation layer, the two connecting segments are respectively located on opposite sides of the fitting arc, the length direction of the connecting segment is tangent to the profile of the isolation layer, and the transition arc is located on the side of the fitting arc away from the wire.

[0018] By adopting the above technical solution, the surface of the positioning ribs and the surface of the isolation layer are smoothly connected, and there is almost no gap between the inner wall of the shielding mesh sleeve and the positioning ribs or the isolation layer.

[0019] Preferably, a plurality of friction slits are provided on the transition arc of the positioning rib, the length direction of the friction slits is perpendicular to the length direction of the positioning rib, and the arrangement direction of the plurality of friction slits is consistent with the length direction of the positioning rib.

[0020] By adopting the above technical solution, the angular structure of the friction seam contacts and abuts the metal ribbon of the shielding mesh, generating friction force on the metal ribbon along the length direction of the conductor, thereby improving the state stability of the shielding mesh.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. Through the setting of the shielding mesh, the shielding mesh isolates the internal and external electromagnetic environments, reduces the impact of external magnetic field changes on the internal wires, and achieves the purpose of reducing electromagnetic induced current;

[0023] 2. By setting the drainage wire, the electromagnetic induction current generated on the shielding mesh can be discharged through the drainage wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a cross-sectional view of the structure of the monitoring cable for the charging pile cabinet in Example 1 of the present application.

[0025] Figure 2 This is a cross-sectional view of the structure of the monitoring cable for the charging pile cabinet in the second embodiment of the present application.

[0026] Figure 3 This is a schematic diagram of the coordination structure of the drainage wire relative to the positioning ribs in the second embodiment of the present application.

[0027] Explanation of the accompanying reference numerals: 1. Center conductor; 11. Insulation layer; 12. Conductor barrel; 2. Isolation layer; 21. Drainage wire; 22. Shielding mesh; 23. Outer protective cover; 3. Positioning rib; 31. Positioning groove; 32. Friction seam; 33. Fitting arc; 34. Transition arc; 35. Connecting section. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-3 This application is described in further detail.

[0029] Example 1:

[0030] The embodiment of the present application discloses a monitoring cable for a charging pile cabinet, such as Figure 1 As shown, the cable includes, from inside to outside, the conductor, the isolation layer 2, the shielding mesh 22, and the protective outer jacket. The shielding mesh 22 is used to isolate the magnetic field environment inside and outside the cable. The outer protective jacket 23 is made of TPV and is used to protect the rest of the cable's internal structure.

[0031] like Figure 1 As shown, the conductor is a coaxial cable. Its structure, from the inside out, includes a center conductor 1, an insulating layer 11, and a conductor barrel 12. The insulating layer 11 is located outside the center conductor 1 and is coaxial with the center conductor 1. The conductor barrel 12 is coaxially sleeved outside the insulating layer 11 and adheres to the outer wall of the insulating layer 11. In this embodiment, the insulating layer 11 is a silicone sleeve, and the conductor barrel 12 is formed by tightly wrapping copper wire around the outer side of the insulating layer 11.

[0032] like Figure 1 As shown, isolation layer 2 is formed by spirally wrapping waterproof tape around the outside of the conductor. The waterproof tape is made of polytetrafluoroethylene and has a thickness of 0.15-0.2 mm. At the same location on isolation layer 2, there are four to five layers of waterproof tape. Isolation layer 2 has both insulating and waterproof properties, isolating the conductor from the shielding mesh 22 while also improving the conductor's waterproof performance.

[0033] like Figure 1 As shown, the shielding mesh 22 is formed by spirally winding metal ribbons. At the same point on the shielding mesh 22, the number of layers of metal ribbon is one. A drainage wire 21 is provided between the shielding mesh 22 and the isolation layer 2. The drainage wire 21 is spirally wound around the isolation layer 2 and is in close contact with the inner side of the shielding mesh 22. The drainage wire 21 is made of copper-nickel alloy, and the end of the drainage wire 21 is grounded. The electromagnetic induction current generated in the shielding mesh 22 can be discharged through the drainage wire 21.

[0034] Example 2:

[0035] like Figure 2 and 3 As shown, a positioning rib 3 is provided between the shielding mesh 22 and the isolation layer 2. The length of the positioning rib 3 is aligned with the length of the conductor, and the positioning rib 3 abuts the surface of the isolation layer 2. The material of the positioning rib 3 can be PVC or PE. The side of the positioning rib 3 facing the isolation layer 2 is provided with a plurality of positioning grooves 31, which are arranged in an array along the length of the positioning rib 3. The drainage wire 21 passes through the positioning rib 3 once with each winding, and passes through the positioning rib 3 through the positioning grooves 31. The positioning rib 3 is bonded to the outside of the isolation layer 2, thereby fixing the two relative to each other. The positioning rib 3 then fixes the winding spacing of the drainage wire 21 through the positioning grooves 31, thereby improving the state stability of the drainage wire 21.

[0036] like Figure 2 and 3 As shown, the metal ribbon of the shielding mesh 22 simultaneously passes around the surface of the isolation layer 2 and the surface of the positioning rib 3. The cross-sectional profile of the positioning rib 3 includes a fitting arc 33, a transition arc 34 and two connecting segments 35. The fitting arc 33 is fitted with the surface of the isolation layer 2. The two connecting segments 35 are respectively located on opposite sides of the fitting arc 33. The length direction of the connecting segment 35 is tangent to the profile of the isolation layer 2. The transition arc 34 is located on the side of the fitting arc 33 away from the conductor, so that the process from the surface of the isolation layer 2 to the surface of the positioning rib 3 is smoother, and the shielding mesh 22 wraps the interior more tightly. A number of friction slits 32 are provided on the transition arc 34 of the positioning rib 3. The length direction of the friction slits 32 is perpendicular to the length direction of the positioning rib 3. The arrangement direction of the friction slits 32 is consistent with the length direction of the positioning rib 3. When the shielding mesh 22 wraps the isolation layer 2 and the positioning rib 3, the angular structure of the friction slit 32 contacts and abuts the metal ribbon of the shielding mesh 22, generating friction force on the metal ribbon along the length direction of the conductor, thereby improving the state stability of the shielding mesh 22.

[0037] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A monitoring cable for a charging pile electric cabinet, comprising a conductor and an outer protective sleeve (23), wherein the outer protective sleeve (23) is coaxially sleeved outside the conductor, and is characterized in that: A shielding mesh sleeve (22) made of a metal material is coaxially arranged between the conductive wire and the outer protective sleeve (23), and an isolation layer (2) is arranged between the shielding mesh sleeve (22) and the conductive wire.

2. A monitoring cable for a charging pile cabinet according to claim 1, characterized in that: A drainage metal wire (21) is provided between the shielding mesh sleeve (22) and the isolation layer (2). The drainage metal wire (21) is spirally wound outside the isolation layer (2), and the drainage metal wire (21) is in contact with the inner side of the shielding mesh sleeve (22).

3. A monitoring cable for a charging pile cabinet according to claim 2, characterized in that: The isolation layer (2) is formed by winding a waterproof tape, and the material of the waterproof tape is polytetrafluoroethylene.

4. A monitoring cable for a charging pile cabinet according to claim 3, characterized in that: The thickness of the waterproof tape is 0.15-0.2 mm, and at the same position point of the isolation layer (2), the number of layers of the waterproof tape is 4-5.

5. A monitoring cable for a charging pile cabinet according to any one of claims 1 to 4, characterized in that: The shielding mesh sleeve (22) is formed by winding metal ribbons, and at the same position point of the shielding mesh sleeve (22), the number of layers of the metal ribbons is one.

6. A monitoring cable for a charging pile cabinet according to any one of claims 1 to 4, characterized in that: The conductor is a coaxial cable, comprising a central conductor (1), an insulating layer (11) and a conductor barrel (12); the insulating layer (11) is located outside the central conductor (1) and is coaxial with the central conductor (1); and the conductor barrel (12) is coaxially sleeved outside the insulating layer (11).

7. The monitoring cable for a charging pile cabinet according to claim 5, characterized in that: A positioning rib (3) is provided between the shielding mesh sleeve (22) and the isolation layer (2); the length direction of the positioning rib (3) is consistent with the length direction of the conductor; the positioning rib (3) and the surface of the isolation layer (2) are bonded; a plurality of positioning grooves (31) for the drainage metal wire (21) to pass through are provided on the side of the positioning rib (3) facing the isolation layer (2); and the plurality of positioning grooves (31) are arranged in an array along the length direction of the positioning rib (3).

8. The monitoring cable for a charging pile cabinet according to claim 7, characterized in that: The cross-sectional profile of the positioning rib (3) comprises a fitting arc (33), a transition arc (34) and two connecting segments (35); the fitting arc (33) is fitted to the isolation layer (2); the two connecting segments (35) are respectively located on opposite sides of the fitting arc (33); the length direction of the connecting segment (35) is tangent to the profile of the isolation layer (2); and the transition arc (34) is located on the side of the fitting arc (33) facing away from the conductor.

9. The monitoring cable for a charging pile cabinet according to claim 8, characterized in that: A plurality of friction slits (32) are provided on the transition arc (34) of the positioning rib (3), the length direction of the friction slits (32) is perpendicular to the length direction of the positioning rib (3), and the arrangement direction of the plurality of friction slits (32) is consistent with the length direction of the positioning rib (3).

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