An electric vehicle access pile power grid short circuit protection device

Abstract

The utility model relates to electric automobile access stake circuit safety technical field especially, and more particularly to a kind of electric automobile access stake power grid short-circuit protection device.The utility model provides a kind of electric automobile access stake power grid short-circuit protection device, which can eliminate the electric arc generated inside the circuit protector when power off, and can also speed up the heat dissipation efficiency inside the circuit protector.A kind of electric automobile access stake power grid short-circuit protection device, including circuit protector and installation frame etc., the right side of circuit protector is connected with installation frame.The utility model extrusion frame moves downward at the same time, extrusion sliding frame moves left, so that arc extinguishing grid moves left and enters inside circuit protector, the electric arc generated when power off is eliminated, and at the same time, the upper heat dissipation groove of circuit protector is opened, so that heat is dissipated outward, which achieves the effect of eliminating the electric arc generated inside the circuit protector when power off, and speeding up the heat dissipation efficiency inside the circuit protector.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle access pile circuit safety technology, and in particular to an electric vehicle access pile power grid short circuit protection device. Background Technology

[0002] With the rapid development of the electric vehicle market, the safety of charging stations, as a crucial infrastructure for electric vehicles, is of paramount importance. However, in practical applications, due to factors such as power grid fluctuations, equipment aging, or external environmental factors, short-circuit faults may occur between charging stations and the power grid, leading to serious safety accidents such as fires, equipment damage, and even personal injury. To prevent such accidents, short-circuit protection devices are necessary.

[0003] Existing electric vehicle charging pile grid short-circuit protection devices can automatically disconnect the circuit when there is a circuit abnormality, thereby avoiding serious safety accidents. However, because the circuit protector may generate an electric arc and heat at the moment of contact separation when disconnecting the circuit, it is easy to damage the circuit protector.

[0004] Therefore, a short-circuit protection device for electric vehicle charging piles has been developed that can eliminate the electric arc generated inside the circuit protector when power is lost, and at the same time accelerate the heat dissipation efficiency inside the circuit protector. Utility Model Content

[0005] To overcome the shortcomings of existing electric vehicle charging pile grid short-circuit protection devices, which may generate electric arcs and heat at the moment of contact separation when the circuit is cut off, easily damaging the circuit protector, this utility model provides an electric vehicle charging pile grid short-circuit protection device that can eliminate the electric arc generated inside the circuit protector when the power is cut off, and at the same time accelerate the heat dissipation efficiency inside the circuit protector.

[0006] The technical implementation scheme of this utility model is as follows: a short circuit protection device for electric vehicle access pile power grid, including a circuit protector, a mounting frame, a fan, a switch assembly and an arc extinguishing assembly. The right side of the circuit protector is connected to the mounting frame, and the upper and lower parts of the mounting frame are connected to the fan. The fan and the processor are electrically connected through a control module. The circuit protector is equipped with a switch assembly that can automatically open and close the gate, and the circuit protector is also equipped with an arc extinguishing assembly that can eliminate the electric arc.

[0007] In a preferred embodiment of this utility model, a heat dissipation groove is provided on the right side of the circuit protector.

[0008] In a preferred embodiment of this utility model, a dustproof net is also included. Dustproof nets are connected to both the upper and lower parts of the mounting frame, and the dustproof nets are located on the right side of the fan.

[0009] In a preferred embodiment of this utility model, a circulation pipe is also included. The lower right part of the mounting frame is connected to the circulation pipe, which passes through the circuit protector.

[0010] In a preferred embodiment of this utility model, the switch assembly includes a pressing frame, an iron block, a first telescopic spring, an electromagnet, a wire, a toggle block, and a torsion spring. The pressing frame is slidably connected to the right side of the circuit protector, and the pressing frame passes through the mounting frame. An iron block is connected to the rear of the pressing frame. The first telescopic spring is connected between the pressing frame and the circuit protector. Initially, the first telescopic spring is in a stretched state. An electromagnet is connected to the rear right side of the circuit protector. A wire is connected between the electromagnet and the circuit protector. The toggle block is rotatably connected to the front of the pressing frame. The toggle block contacts and engages with the gate of the circuit protector. Torsion springs are connected between the upper and lower parts of the toggle block and the pressing frame.

[0011] In a preferred embodiment of the present invention, the arc extinguishing assembly includes a sliding frame, an arc extinguishing grid, and a second telescopic spring. The upper right part of the circuit protector is slidably connected to the sliding frame, and the compression frame and the sliding frame are in compression fit. The arc extinguishing grid is connected to the sliding frame and contacts the circuit protector. The second telescopic spring is connected between the sliding frame and the circuit protector.

[0012] Compared with the prior art, the present invention has the following advantages: 1. When the extrusion frame moves downward, the extrusion sliding frame moves to the left, so that the arc extinguishing grid moves to the left and enters the circuit protector to eliminate the electric arc generated when the power is cut off. At the same time, the heat dissipation groove on the upper part of the circuit protector is opened, so that the heat is dissipated outward. This achieves the effect of eliminating the electric arc generated inside the circuit protector when the power is cut off, and at the same time, it can accelerate the heat dissipation efficiency inside the circuit protector.

[0013] 2. When the circuit protector is de-energized, the power to the wires is cut off, which de-energizes the electromagnet. Subsequently, the iron block disengages from the electromagnet, and the first telescopic spring rebounds, causing the pressing frame to move downward, which in turn moves the actuating block downward. Under the action of the torsion spring, the actuating block moves downward to push the gate on the circuit protector, thus achieving the effect of pushing the gate to close when the power is off, avoiding safety hazards or operational failures caused by power failures. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a three-dimensional structural diagram of the circuit protector and fan of this utility model.

[0016] Figure 3 This is a three-dimensional structural diagram of the circulation pipeline of this utility model.

[0017] Figure 4This is a three-dimensional structural diagram of the extrusion frame and actuating block of this utility model.

[0018] Figure 5 This is a three-dimensional structural diagram of the electromagnet and iron block of this utility model.

[0019] Figure 6 This is a three-dimensional structural diagram of the sliding frame and arc-extinguishing grid of this utility model.

[0020] The components in the attached diagram are labeled as follows: 1. Circuit protector, 2. Mounting frame, 3. Fan, 4. Dustproof net, 5. Circulation pipe, 6. Extrusion frame, 7. Iron block, 8. First telescopic spring, 9. Electromagnet, 10. Wire, 11. Actuating block, 12. Torsion spring, 13. Sliding frame, 14. Arc extinguishing grid, 15. Second telescopic spring. Detailed Implementation

[0021] First, it should be noted that in different described embodiments, the same components are given the same reference numerals or the same component names. The disclosure contained throughout this specification can be applied semantically to the same components having the same reference numerals or the same component names. The location descriptions selected in the specification, such as upper, lower, lateral, etc., also refer to the directly described and illustrated figures and are semantically applied to the new location when the location changes.

[0022] A short-circuit protection device for electric vehicle charging pile power grid, such as Figures 1-6 As shown, the device includes a circuit protector 1, a mounting frame 2, a fan 3, a dust filter 4, a circulation pipe 5, a switch assembly, and an arc-extinguishing assembly. The right side of the circuit protector 1 is connected to the mounting frame 2, and a heat dissipation slot is provided on the right side of the circuit protector 1 for heat dissipation. The upper and lower parts of the mounting frame 2 are connected to the fan 3, and the fan 3 and the processor are electrically connected through a control module. The upper and lower parts of the mounting frame 2 are connected to the dust filter 4, which is located to the right of the fan 3. The lower right part of the mounting frame 2 is connected to the circulation pipe 5, which passes through the circuit protector 1. The circuit protector 1 is equipped with a switch assembly and an arc-extinguishing assembly.

[0023] like Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, the switch assembly includes a pressing frame 6, an iron block 7, a first telescopic spring 8, an electromagnet 9, a wire 10, a toggle block 11, and a torsion spring 12. The pressing frame 6 is slidably connected to the right side of the circuit protector 1. The pressing frame 6 passes through the mounting frame 2. The iron block 7 is connected to the rear of the pressing frame 6. The first telescopic spring 8 is connected between the pressing frame 6 and the circuit protector 1. Initially, the first telescopic spring 8 is in a stretched state. The electromagnet 9 is connected to the rear right side of the circuit protector 1. The wire 10 is connected between the electromagnet 9 and the circuit protector 1. The toggle block 11 is rotatably connected to the front of the pressing frame 6. The toggle block 11 contacts and engages with the gate of the circuit protector 1. The torsion spring 12 is connected to both the upper and lower parts of the toggle block 11 and the pressing frame 6.

[0024] like Figure 1 , Figure 4 and Figure 6 As shown, the arc extinguishing assembly includes a sliding frame 13, an arc extinguishing grid 14, and a second telescopic spring 15. The upper right part of the circuit protector 1 is slidably connected to the sliding frame 13. The compression frame 6 and the sliding frame 13 are in compression engagement. The arc extinguishing grid 14 is connected to the sliding frame 13 and contacts the circuit protector 1. The second telescopic spring 15 is connected between the sliding frame 13 and the circuit protector 1.

[0025] When using this utility model, the circuit protector 1 is first installed in the short-circuit protection area of ​​the electric vehicle access pile power grid. When a short circuit occurs in the electric vehicle access pile power grid, the circuit protector 1 automatically trips and shuts down the circuit. When the circuit protector 1 is running, the processor starts the fan 3 through the control module to accelerate the heat dissipation efficiency of the circuit protector 1. The dustproof net 4 intercepts dust and other impurities in the air, and can also pass coolant into the circulation pipe 5 to cool the air inside the mounting frame 2, accelerating the heat dissipation efficiency of the circuit protector 1. When the circuit protector 1 is de-energized, the wire 10 is de-energized, causing the electromagnet 9 to be de-energized. Subsequently, the iron block 7 disengages from the electromagnet 9, the first telescopic spring 8 rebounds, causing the pressing frame 6 to move downward, driving the toggle block 11 to move downward. Under the action of the torsion spring 12, the toggle block 11 moves the circuit protector 1 downward. The gate on the upper part closes the gate, thus enabling it to close during power outages and preventing safety hazards or operational failures caused by power failures. When manual operation of the gate is required, the actuating block 11 can be rotated forward to open it. Simultaneously, the squeezing frame 6 moves downward, squeezing the sliding frame 13 to move to the left. The second telescopic spring 15 is stretched, causing the arc-extinguishing grid 14 to move to the left and enter the circuit protector 1, eliminating the electric arc generated during power outages. At the same time, the heat dissipation groove on the upper part of the circuit protector 1 is opened, allowing heat to dissipate outwards. After the circuit is restored to normal, the wire 10 is energized, causing the electromagnet 9 to be energized and attract the iron block 7, driving the squeezing frame 6 to move upwards. This causes the actuating block 11 to push the gate upwards. After the squeezing frame 6 moves upwards, it disengages from the sliding frame 13. The second telescopic spring 15 rebounds, causing the arc-extinguishing grid 14 to reset and close the circuit protector 1.

[0026] Although this disclosure has been shown and described with reference to specific exemplary embodiments thereof, those skilled in the art will understand that various changes in form and detail may be made to this disclosure without departing from the spirit and scope of the disclosure as defined by the appended claims and their equivalents. Therefore, the scope of this disclosure should not be limited to the above embodiments, but should be defined not only by the appended claims, but also by their equivalents.

Claims

1. A short-circuit protection device for electric vehicle charging pile power grid, characterized in that: The circuit includes a circuit protector (1), a mounting frame (2), a fan (3), a switch assembly, and an arc extinguishing assembly. The right side of the circuit protector (1) is connected to the mounting frame (2). The upper and lower parts of the mounting frame (2) are connected to the fan (3). The fan (3) and the processor are electrically connected through a control module. The circuit protector (1) is equipped with a switch assembly that can automatically open and close the gate. The circuit protector (1) is also equipped with an arc extinguishing assembly that can eliminate the electric arc. The switch assembly includes a pressing frame (6), an iron block (7), a first telescopic spring (8), an electromagnet (9), an electric wire (10), a toggle block (11), and a torsion spring (12). The right side of the circuit protector (1) is slidably connected to the pressing frame (6). The pressing frame (6) passes through the mounting frame (2). The rear part of the pressing frame (6) is connected to the iron block (7). The pressing frame (6) and the circuit protector (1) are connected by the first telescopic spring (8). Initially, the first telescopic spring (8) is in a stretched state. An electromagnet (9) is connected to the rear right side of the circuit protector (1). A wire (10) is connected between the electromagnet (9) and the circuit protector (1). A toggle block (11) is rotatably connected to the front of the squeezing frame (6). The toggle block (11) is in contact with the gate of the circuit protector (1). Torque springs (12) are connected between the upper and lower parts of the toggle block (11) and the squeezing frame (6). The arc extinguishing assembly includes a sliding frame (13), an arc extinguishing grid (14), and a second telescopic spring (15). The sliding frame (13) is slidably connected to the upper right side of the circuit protector (1). The squeezing frame (6) and the sliding frame (13) are in a squeezing fit. An arc extinguishing grid (14) is connected to the sliding frame (13). The arc extinguishing grid (14) is in contact with the circuit protector (1). A second telescopic spring (15) is connected between the sliding frame (13) and the circuit protector (1).

2. The electric vehicle charging pile grid short-circuit protection device according to claim 1, characterized in that: The circuit protector (1) has a heat dissipation slot on its right side.

3. The electric vehicle charging pile grid short-circuit protection device according to claim 1, characterized in that: It also includes a dustproof net (4), and the upper and lower parts of the mounting frame (2) are connected with dustproof nets (4), which are located on the right side of the fan (3).

4. A short-circuit protection device for electric vehicle charging pile power grid according to claim 1, characterized in that: Also includes There is a circulation pipe (5), and the lower right part of the mounting frame (2) is connected to the circulation pipe (5), which passes through the circuit protector (1).

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