Outer surface layer electric leakage monitoring device of charging pile

Abstract

The utility model discloses an electric leakage monitoring device for an outer surface layer of a charging pile. The electric leakage monitoring device comprises a cable extending from one side of the charging pile. The device further comprises a preassembled part, an electricity leading assembly and an installation assembly. The preassembled part is mounted on the side surface of the charging pile and located outside the cable; the electricity leading assembly comprises a plurality of conductive strips arranged on the inner side face of the electric contact ring. An electricity gathering ring is arranged in the electric contact ring; a current sensor is arranged on the outer side of the electric contact ring; the installation assembly comprises a limiting cover which is detachably installed on the front face of the preassembled part, and the cable penetrates out of the limiting cover. And a humidity sensor is arranged on the limiting cover. The device can be directly fixed at the end part of the cable on the side surface of the charging pile, and can monitor the leakage current at the end part in real time.

Description

Technical Field

[0001] This utility model relates to the field of charging pile technology, specifically to a leakage current monitoring device for the outer surface of a charging pile. Background Technology

[0002] Charging piles are exposed to the outdoors for long periods of time, and the cables are exposed to natural factors such as wind, rain and sun. The insulation layer of the cables is prone to aging and damage, which can lead to leakage. The semiconductor components, capacitors, filters and other components inside the charging pile may malfunction, generating leakage current and causing leakage at the cable ends. In addition, moisture in the charging pile lines can lead to a decrease in insulation performance, making them prone to short circuits and leakage at the cable ends.

[0003] Leakage at the cable ends of charging piles can cause electric shock to personnel and damage internal electronic components, affecting the normal operation of the equipment. Current technology primarily detects leakage in charging piles through insulation resistance and leakage current tests. However, in practical applications, leakage often occurs at the cable leads, where a suitable real-time detection device is lacking. Furthermore, because cables are frequently dragged during charging, external leakage detection devices are easily displaced, affecting the test results. Therefore, there is room for technological improvement. Utility Model Content

[0004] This invention aims to solve the aforementioned technical problem that, due to the frequent dragging and charging of cables, the external leakage detection device at the end is easily shaken and displaced, affecting the detection results. It provides an external leakage monitoring device for charging piles.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is: a leakage current monitoring device for the outer surface of a charging pile, including a cable extending from one side of the charging pile; and further including:

[0006] Pre-installed component; installed on the side of the charging pile and located outside the cable; the pre-installed component includes an electrical contact ring, and an installation ring that can be detachably connected to the charging pile is provided on the outer side of the electrical contact ring and near the rear end; a connecting flange is provided on the outer side of the electrical contact ring and near the front end;

[0007] A current-conducting assembly includes multiple conductive strips disposed on the inner side of an electrical contact ring; a current-collecting ring is disposed inside the electrical contact ring, through which the cable passes and contacts the current-collecting ring; a current sensor is disposed on the outer side of the electrical contact ring.

[0008] The mounting components include a limiting cover, which is detachably mounted on the front of the pre-assembled part, through which the cable passes; the limiting cover is equipped with a humidity sensor.

[0009] Furthermore, the mounting ring has a plurality of mounting holes along its circumferential direction.

[0010] Furthermore, a liner ring is provided on the rear side of the mounting ring.

[0011] Furthermore, the electrical contact ring is made of a conductive material.

[0012] Furthermore, the limiting cover is provided with a second connecting flange, which is connected to the connecting flange by bolts, and a second bushing is provided between the two; the inner side of the second connecting flange is provided with limiting serrations along the circumference, and the inner side of the connecting flange is provided with toothed grooves corresponding to the limiting serrations.

[0013] Furthermore, the limiting cover is funnel-shaped, made of composite rubber, and its front inner side is fixedly connected to the cable.

[0014] The advantages of this utility model compared with the prior art are as follows:

[0015] It can be directly fixed to the end of the cable on the side of the charging pile, and can monitor the leakage current at the end in real time. It has a compact structure and is easy to operate.

[0016] By using limiting serrations, toothed grooves, and connecting flanges, the structural strength of the installation is improved, making it less prone to loosening or displacement due to frequent cable dragging during long-term use, thus improving practicality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is an exploded view of this utility model.

[0019] Figure 3 This is a schematic diagram of the pre-assembled component structure of this utility model.

[0020] As shown in the figure: 1. Cable, 2. Pre-assembled parts, 3. Electrical contact ring, 4. Conductive strip, 5. Mounting ring, 6. Connecting flange, 7. Assembly hole, 8. Liner ring, 9. Polymer ring, 10. Current sensor, 11. Limiting cover, 12. Humidity sensor, 13. Limiting serration, 14. Toothed groove, 15. Liner ring II. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings.

[0022] Example 1, in conjunction with Appendix Figure 1 A leakage current monitoring device for the outer surface of a charging pile, comprising a cable 1 extending from one side of the charging pile;

[0023] Combined with appendix Figure 1 , 23. It also includes a pre-installed component 2; installed on the side of the charging pile and located outside the cable 1; the pre-installed component 2 includes an electrical contact ring 3, and an installation ring 5 that can be detachably connected to the charging pile is provided on the outer side of the electrical contact ring 3 and near the rear end; the installation ring 5 has several assembly holes 7 along the circumference, and a liner ring 8 is provided on the rear side of the installation ring 5; a connecting flange 6 is provided on the outer side of the electrical contact ring 3 and near the front end; the pre-installed component 2 can be installed on the charging pile through the installation ring 5, which protects the end of the cable 1 and detects leakage that is prone to occur at this point;

[0024] Combined with appendix Figure 2 , 3 It also includes a current-conducting component; including multiple conductive strips 4 provided on the inner side of the electrical contact ring 3, the conductive strips 4 are preferably made of copper and have good conductivity; a current-collecting ring 9 is provided inside the electrical contact ring 3, the cable 1 passes through the current-collecting ring 9 and contacts the current-collecting ring 9; the electrical contact ring 3 is made of conductive material; a current sensor 10 is provided on the outer side of the electrical contact ring 3; in the above structure, when leakage occurs at the end of the cable 1, the current is conducted through the conductive strips 4, the current-collecting ring 9, and the electrical contact ring 3 to the current sensor 10. If the terminal equipment detects a current signal at this location, it indicates that the cable is leaking current, and measures can be taken in time;

[0025] Combined with appendix Figure 1 , 2 It also includes installation components; including a limiting cover 11, which is detachably installed on the front of the pre-assembled part 2. The cable 1 passes through the limiting cover 11, which can form protection for the power supply component and the cable 1; the limiting cover 11 is provided with a second connecting flange, which is connected to the connecting flange 6 by bolts. A second bushing 15 is provided between the two to provide cushioning and avoid damage caused by hard compression connection; the inner side of the second connecting flange is provided with limiting serrations 13 along the circumference, and the inner side of the connecting flange 6 is provided with toothed grooves 14 corresponding to the limiting serrations 13; the insertion of the limiting serrations 13 and the toothed grooves 14 can avoid the torsion between the power supply component and the installation component, improve the connection strength, and prevent the installation component from loosening during repeated dragging and use;

[0026] The limiting cover 11 is funnel-shaped and made of composite rubber. Its front inner side is fixed to the cable 1. The composite rubber material itself is deformable, which provides good protection for the cable 1.

[0027] In addition, a humidity sensor 12 is installed on the limit cover 11; the air humidity at the charging pile is monitored by the terminal equipment. When the humidity is high, the probability of leakage is greater, which can be prevented in advance or corresponding measures can be taken.

[0028] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A leakage current monitoring device for the outer surface of a charging pile, comprising a cable (1) extending from one side of the charging pile; characterized in that: Also includes: Pre-assembled parts (2); Installed on the side of the charging pile and located outside the cable (1); the pre-installed component (2) includes an electrical contact ring (3), and an installation ring (5) that can be detachably connected to the charging pile is provided on the outside of the electrical contact ring (3) and near the rear end; a connecting flange (6) is provided on the outside of the electrical contact ring (3) and near the front end. Power supply components; The device includes multiple conductive strips (4) on the inner side of an electrical contact ring (3); an electric shock ring (9) is provided inside the electrical contact ring (3), through which the cable (1) passes and contacts the electric shock ring (9); and a current sensor (10) is provided on the outer side of the electrical contact ring (3). The mounting assembly includes a limiting cover (11) which is detachably mounted on the front of the pre-assembled part (2), through which the cable (1) passes; and a humidity sensor (12) is provided on the limiting cover (11).

2. The external leakage current monitoring device for a charging pile according to claim 1, characterized in that: The mounting ring (5) has several mounting holes (7) along its circumferential direction.

3. The external leakage current monitoring device for a charging pile according to claim 1, characterized in that: A bushing (8) is provided on the rear side of the mounting ring (5).

4. The external leakage current monitoring device for a charging pile according to claim 1, characterized in that: The electrical contact ring (3) is made of conductive material.

5. The external leakage current monitoring device for a charging pile according to claim 1, characterized in that: The limiting cover (11) is provided with a second connecting flange, which is connected to the connecting flange (6) by bolts, and a second bushing (15) is provided between them; the inner side of the second connecting flange is provided with a limiting sawtooth (13) along the circumferential direction, and the inner side of the connecting flange (6) is provided with a toothed groove (14) corresponding to the limiting sawtooth (13).

6. The external leakage current monitoring device for a charging pile according to claim 5, characterized in that: The limiting cover (11) is funnel-shaped and made of composite rubber. Its front inner side is fixed to the cable (1).

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