Electric vehicle charging pile interface protection device

Abstract

The present invention relates to the technical field of automobile charging piles, and discloses an interface protection device for an electric vehicle charging pile, a supporting mechanism, and the supporting mechanism also includes an equipment shell. In order to prevent voltage mismatch from occurring, which may cause internal equipment to be damaged by resistance, the present invention, when the equipment is turned on for charging, current is transmitted from a transmission line to a power-on block, and from the power-on block to a transmission electric support. When voltage mismatch occurs in the equipment, a sliding square plate and a power-on block are affected by the voltage to generate high temperature, and the temperature generated will heat the liquid inside a liquid tank, causing the liquid to expand and contract due to heat and move upward through the liquid tank. When the temperature reaches a certain level, current will be transmitted to a transmission secondary line through the expanded liquid, and the transmission secondary line will drive an electric telescopic rod to contract, causing the power-on block to move backward to the resistance block, thereby physically cutting off the connection with the equipment and ensuring that the equipment will not be damaged due to high temperature.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile charging pile equipment, in particular to an interface protection device for an electric vehicle charging pile. Background Art

[0002] Electric vehicles refer to vehicles that use onboard power as power, use motors to drive wheels, and comply with various requirements of road traffic and safety regulations. Compared with gasoline-powered vehicles, electric vehicles have less impact on the environment and can replace the use of non-renewable energy gasoline. Therefore, the prospects of electric vehicles are widely optimistic and meet the requirements of new energy strategies. With the increasingly urgent task of energy conservation and emission reduction, electric vehicles have been widely promoted. However, in the consumption and use of electric vehicles, there is still a lot of room for improvement in the improvement of supporting charging facilities. Electric vehicle charging piles can provide car owners with convenient and fast charging functions in parking lots, communities, highway rest areas, etc., provide strong support for the long-term endurance of electric vehicles, and completely solve the problem of insufficient endurance of electric vehicles.

[0003] However, electric vehicle charging piles are mostly used in locations with large traffic flow, such as parking lots with multiple speed bumps. When vehicles pass by, the ground will vibrate. In addition, if an open flame occurs in the parking lot, it will cause great economic losses. How to avoid the occurrence of open flames? The following solutions are proposed. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides an electric vehicle charging pile interface protection device, including a supporting mechanism, the supporting mechanism also includes a device housing, an extrusion spring is fixedly connected to the inner wall of the device housing, a supporting rod is fixedly connected to the bottom of the device housing, and a base is fixedly connected to one end of the supporting rod away from the device housing. The mechanism provides an installation position for subsequent mechanisms, which plays a stabilizing effect during operation, ensures the normal operation of the device, and avoids problems such as bumps;

[0005] The fixing mechanism includes a sliding plate fixedly connected to the end of the extrusion spring away from the device housing, a sliding groove is provided on the outer wall of the sliding plate, and the outer wall of the sliding plate is fixedly connected to the electrical box housing;

[0006] The internal protection mechanism includes an electric telescopic rod fixedly connected to the outer wall of the electric box shell, an end of the electric telescopic rod away from the electric box shell is fixedly connected to a power block, and a plurality of transmission lines are fixedly connected to the outer wall of the electric telescopic rod.

[0007] Preferably, the support mechanism also includes a plurality of rotating grooves provided on the outer wall of the device casing, and a fixed rotating rod is rotatably connected to the inner wall of the plurality of rotating grooves. The present invention is internally provided with a device casing, a compression spring, a support rod, and a base. The close fit between the base and the support rod helps to reduce the influence of the external environment on the device.

[0008] Preferably, the supporting mechanism also includes a plurality of airbag boxes fixedly connected to the outer wall of the device housing, wherein one end of the airbag box away from the device housing is fixedly connected to the outer wall of the sliding plate, and an extrusion plate is fixedly connected to the outer wall of the device housing, wherein the extrusion plate has two layers of high and low shapes, and a push plate is slidably connected to the top of the airbag box, and the height of the fixed rotating rod is controlled by the push plate, thereby realizing the entry and removal of the plug-in plate.

[0009] Preferably, the fixing mechanism also includes an oil tank plate fixedly connected to the top of the electrical box housing, a main oil tank is fixedly connected to the inner wall of the oil tank plate, a side oil tank is fixedly connected to the outer wall of the main oil tank, the top of the side oil tank is slidably connected to an extrusion side plate, and the top of the main oil tank is slidably connected to a pressing slide plate. When the user plugs in the power supply, an inward pushing force is generated, and this force pushes the sliding plate inward. At this time, the sliding plate squeezes the airbag box inward to force the pushing plate to move upward, and squeezes the fixed rotating rod, so that the end of the fixed rotating rod is tilted upward, and at this time the front end of the extrusion plate will squeeze the pressing slide plate to put the extrusion side plate in an upward stage. After the user inserts the device, the device will lose the source of force, the end of the fixed rotating rod will fall and be restricted by the extrusion side plate, hooking the external charger, effectively avoiding the phenomenon of charger loosening in venues with large traffic flow, and ensuring the efficiency of equipment charging.

[0010] Preferably, the fixing mechanism also includes an equipment side panel fixedly connected to the outer wall of the electric box shell, and a limiting frame is fixedly connected to the outer wall of the equipment side panel. After charging is completed, the charger is pushed again to move the sliding plate backward. At this time, the airbag box controls the fixed rotating rod to tilt up, and makes the rear part of the extrusion plate squeeze and press the slide plate, so that more liquid in the side oil tank flows into the inside of the extrusion side panel, so that the extrusion side panel is in a higher position, and controls the end of the fixed rotating rod to go out of the upward stage. At this time, the user can unplug the charger and complete the charging process.

[0011] Preferably, the internal protection mechanism also includes a sliding rod fixedly connected to the outer wall of the electrical box shell, the outer wall of the power-on block is slidably connected to a sliding square plate, the inner wall of the sliding square plate is fixedly connected to a power-on block, and the outer wall of the power-on block is fixedly connected to a resistance block. In order to prevent voltage mismatch, which causes internal equipment to be damaged by resistance, when the equipment is turned on for charging, current is transmitted from the transmission line to the power-on block, and from the power-on block to the transmission power bracket. When voltage mismatch occurs in the equipment, the sliding square plate and the power-on block are affected by the voltage to generate high temperature, and the generated temperature will heat the liquid inside the liquid tank, causing the liquid to expand and contract due to heat and move upward through the liquid tank. When the temperature reaches a certain level, the current will drive the electric telescopic rod to contract through the internal circuit, causing the power-on block to move backward to the resistance block, thereby physically cutting off the connection with the equipment to ensure that the equipment will not be damaged due to high temperature.

[0012] Preferably, the internal protection mechanism also includes a fixed bracket fixedly connected to the outer wall of the sliding square plate, the end of the sliding rod away from the electrical box casing is fixedly connected to the outer wall of the fixed bracket, a liquid groove is opened on the inner wall of the fixed bracket, a transmission secondary line is fixedly connected to the outer wall of the liquid groove, and the end of the transmission secondary line away from the liquid groove is fixedly connected to the outer wall of the electric telescopic rod.

[0013] Preferably, the internal protection mechanism also includes a transmission power support fixedly connected to the end of the fixed support away from the sliding square plate, a pressing mainboard fixedly connected to the outer wall of the transmission power support, a small telescopic rod fixedly connected to the outer wall of the pressing mainboard, and a reset control block fixedly connected to the outer wall of the pressing mainboard. When the current is interrupted and cooling is completed, the staff can drive the small telescopic rod through the reset control block. At this time, the small telescopic rod pushes the power-on block to move toward the inside of the sliding square plate, so that the power-on block contacts the power-on square block, and the equipment can be restored to use through the above linkage.

[0014] The present invention has the following beneficial effects:

[0015] (1) The present invention utilizes the fact that when the user plugs in the power supply, an inward pushing force will be generated, and this force will push the sliding plate inward. At this time, the sliding plate squeezes the airbag box inward to force the push plate to move upward, and squeezes the fixed rotating rod, so that the end of the fixed rotating rod is tilted upward. At this time, the front end of the squeezing plate will squeeze and press the sliding plate to put the squeezing side plate in the upward movement stage. After the user inserts the device, the device will lose the source of force, and the end of the fixed rotating rod will fall and be restricted by the squeezing side plate to hook the external charger, effectively avoiding the phenomenon of the charger loosening in places with large traffic flow, thereby ensuring the efficiency of device charging.

[0016] (2) In order to prevent voltage mismatch from causing damage to internal equipment due to resistance, the present invention prevents the occurrence of voltage mismatch, which causes the internal equipment to be affected by resistance and cause equipment damage. When the equipment is turned on for charging, the current is transmitted from the transmission line to the power block, and then from the power block to the transmission power bracket. When the equipment has voltage mismatch, the sliding square plate and the power block are affected by the voltage to generate high temperature. The generated temperature will heat the liquid inside the liquid tank, causing the liquid to expand and contract, and move upward through the liquid tank. When the temperature reaches a certain level, the current will be transmitted to the transmission secondary line through the expanded liquid, and the electric telescopic rod will be driven to shrink through the transmission secondary line, causing the power block to move backward to the resistance block, thereby physically cutting off the connection with the equipment and ensuring that the equipment will not be damaged due to high temperature.

[0017] (3) In the present invention, when the current is interrupted and the cooling is completed, the staff can drive the small telescopic rod through the reset control block. At this time, the small telescopic rod pushes the power-on block to move inside the sliding square plate, so that the power-on block contacts the power-on square block. Through the above linkage, the equipment can be restored to use.

[0018] (4) After the charging is completed, the present invention pushes the charger again to move the sliding plate backward. At this time, the airbag box controls the fixed rotating rod to tilt up, and makes the rear part of the extrusion plate squeeze and press the sliding plate, so that more liquid in the side oil tank flows into the inside of the extrusion side plate, so that the extrusion side plate is in a higher position, and controls the end of the fixed rotating rod to go out and tilt upward. At this time, the user can unplug the charger and complete the charging process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the support mechanism of the present invention;

[0022] Figure 3 For the present invention Figure 2 A magnified view of middle;

[0023] Figure 4 It is a cross-sectional schematic diagram of the support mechanism of the present invention;

[0024] Figure 5 It is a schematic diagram of the fixing mechanism of the present invention;

[0025] Figure 6 It is an exploded schematic diagram of the fixing mechanism of the present invention;

[0026] Figure 7 This is a schematic diagram of the explosion of the internal protection mechanism of the present invention;

[0027] Figure 8 For the present invention Figure 7 Enlarged view of middle B;

[0028] Fig. 9 It is a schematic cross-sectional view of the internal protection mechanism of the present invention.

[0029] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0030] In the figure: 1. Support mechanism; 101. Equipment housing; 102. Extrusion spring; 103. Support rod; 104. Base; 105. Rotation slot; 106. Fixed rotation rod; 107. Airbag box; 108. Extrusion plate; 109. Push plate; 2. Fixing mechanism; 201. Sliding plate; 202. Sliding slot; 203. Electric box housing; 204. Oil tank plate; 205. Main oil tank; 206. Side oil tank; 207. Extrusion side plate; 208. Press Pressing plate; 209, equipment side panel; 210, restriction box; 3, internal protection mechanism; 301, electric telescopic rod; 302, power block; 303, transmission line; 304, sliding rod; 305, sliding square plate; 306, power block; 307, resistance block; 308, fixed bracket; 309, liquid tank; 310, transmission electric bracket; 311, pressing main board; 312, small telescopic rod; 313, reset control block; 314, transmission secondary line. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] For example, see Figure 1 - Figure 3 The present invention is an interface protection device for an electric vehicle charging pile, including a supporting mechanism 1, the supporting mechanism 1 also includes a device housing 101, an extrusion spring 102 is fixedly connected to the inner wall of the device housing 101, a supporting rod 103 is fixedly connected to the bottom of the device housing 101, and a base 104 is fixedly connected to one end of the supporting rod 103 away from the device housing 101. The mechanism provides an installation position for subsequent mechanisms, which plays a stabilizing effect during operation, ensures the normal operation of the equipment, and avoids problems such as bumps.

[0033] The fixing mechanism 2 includes a sliding plate 201 fixedly connected to the end of the extrusion spring 102 away from the device housing 101, a sliding groove 202 is opened on the outer wall of the sliding plate 201, and an electrical box housing 203 is fixedly connected to the outer wall of the sliding plate 201.

[0034] The internal protection mechanism 3 includes an electric telescopic rod 301 fixedly connected to the outer wall of the electrical box housing 203, an end of the electric telescopic rod 301 away from the electrical box housing 203 is fixedly connected to a power block 302, and a plurality of transmission lines 303 are fixedly connected to the outer wall of the electric telescopic rod 301.

[0035] The support mechanism 1 also includes a plurality of rotating grooves 105 provided on the outer wall of the device housing 101, and a fixed rotating rod 106 is rotatably connected to the inner wall of the plurality of rotating grooves 105. The device housing 101, the extrusion spring 102, the support rod 103, and the base 104 are arranged inside the present invention. The close fit between the base 104 and the support rod 103 helps to reduce the influence of the external environment on the device.

[0036] The support mechanism 1 also includes a plurality of airbag boxes 107 fixedly connected to the outer wall of the device housing 101. The end of the airbag box 107 away from the device housing 101 is fixedly connected to the outer wall of the sliding plate 201. An extrusion plate 108 is fixedly connected to the outer wall of the device housing 101, wherein the extrusion plate 108 has two layers of high and low. A push plate 109 is slidably connected to the top of the airbag box 107. The height of the fixed rotating rod 106 is controlled by the push plate 109, thereby realizing the entry and removal of the plug-in board.

[0037] For example 2, please refer to Figure 4 - Figure 8 The present invention is an interface protection device for an electric vehicle charging pile. On the basis of Example 1, the fixing mechanism 2 also includes an oil tank plate 204 fixedly connected to the top of the electric box housing 203, a main oil tank 205 fixedly connected to the inner wall of the oil tank plate 204, a side oil tank 206 fixedly connected to the outer wall of the main oil tank 205, an extrusion side plate 207 slidably connected to the top of the side oil tank 206, and a pressing slide plate 208 slidably connected to the top of the main oil tank 205. When the user inserts the power supply, an inward pushing force will be generated, and this force will push the sliding plate 201 inward. Move, at this time, the sliding plate 201 squeezes the airbag box 107 inwardly to force the pushing plate 109 to move upward, and squeezes the fixed rotating rod 106, so that the end of the fixed rotating rod 106 is tilted upward, and at this time, the front end of the squeezing plate 108 will squeeze and press the sliding plate 208 to make the squeezing side plate 207 in the upward stage. After the user inserts the device, the device will lose the source of force, and the end of the fixed rotating rod 106 will fall and be restricted by the squeezing side plate 207 to hook the external charger, effectively avoiding the loosening of the charger in places with large traffic flow, thereby ensuring the efficiency of device charging.

[0038] The fixing mechanism 2 also includes an equipment side panel 209 fixedly connected to the outer wall of the electric box housing 203, and a limiting frame 210 is fixedly connected to the outer wall of the equipment side panel 209. After charging is completed, the charger is pushed again to move the sliding plate 201 backward. At this time, the airbag box 107 controls the fixed rotating rod 106 to tilt up, and makes the rear part of the squeezing plate 108 squeeze and press the slide plate 208, so that more liquid in the side oil tank 206 flows into the squeezing side panel 207, so that the squeezing side panel 207 is in a higher position, and controls the end of the fixed rotating rod 106 to go out of the upward tilting stage. At this time, the user can unplug the charger and complete the charging process.

[0039] The internal protection mechanism 3 also includes a sliding rod 304 fixedly connected to the outer wall of the electrical box housing 203, a sliding square plate 305 is slidably connected to the outer wall of the power block 302, a power block 306 is fixedly connected to the inner wall of the sliding square plate 305, and a resistance block 307 is fixedly connected to the outer wall of the power block 306. In order to prevent voltage mismatch, which may cause the internal equipment to be damaged by the resistance, when the equipment is turned on for charging, the current is transmitted from the transmission line 303 to the power block 302, and from the power block 306 through the transmission bracket 3 10, when the voltage mismatch occurs in the device, the sliding square plate 305 and the power-on block 306 will generate high temperature under the influence of the voltage, and the generated temperature will heat the liquid inside the liquid tank 309, causing the liquid to expand and contract due to heat and move upward through the liquid tank 309. When the temperature reaches a certain level, the current will drive the electric telescopic rod 301 to contract through the internal circuit, causing the power-on block 302 to move backward to the resistance block 307, thereby physically cutting off the connection with the device to ensure that the device will not be damaged due to high temperature.

[0040] The internal protection mechanism 3 also includes a fixed bracket 308 fixedly connected to the outer wall of the sliding square plate 305, and the end of the sliding rod 304 away from the electrical box housing 203 is fixedly connected to the outer wall of the fixed bracket 308. A liquid groove 309 is opened on the inner wall of the fixed bracket 308, and a transmission secondary line 314 is fixedly connected to the outer wall of the liquid groove 309. The end of the transmission secondary line 314 away from the liquid groove 309 is fixedly connected to the outer wall of the electric telescopic rod 301.

[0041] The internal protection mechanism 3 also includes a transmission power support 310 fixedly connected to the fixed support 308 away from the sliding square plate 305, and a pressing mainboard 311 is fixedly connected to the outer wall of the transmission power support 310, and a small telescopic rod 312 is fixedly connected to the outer wall of the pressing mainboard 311, and a reset control block 313 is fixedly connected to the outer wall of the pressing mainboard 311. When the current is interrupted and the cooling is completed, the staff can drive the small telescopic rod 312 through the reset control block 313. At this time, the small telescopic rod 312 pushes the power block 302 to move toward the inside of the sliding square plate 305, so that the power block 302 contacts the power block 306, and the equipment can be restored to use through the above linkage.

[0042] A specific application of this embodiment is: the device utilizes a user to generate an inward pushing force when plugging in a power source, and this force pushes the sliding plate 201 inward. At this time, the sliding plate 201 squeezes the airbag box 107 inward to force the pushing plate 109 to move upward, and squeezes the fixed rotating rod 106, so that the end of the fixed rotating rod 106 is tilted upward, and at this time, the front end of the squeezing plate 108 squeezes and presses the sliding plate 208 to make the squeezing side plate 207 in the upward movement stage. After the user inserts the device, the device will lose the source of force, and the end of the fixed rotating rod 106 will fall and be restricted by the squeezing side plate 207 to hook the external charger, effectively avoiding the phenomenon of the charger loosening in places with large traffic. When the device is turned on for charging, the current is transmitted from the transmission line 303 to the power-on block 302, and from the power-on block 306 through the transmission power bracket 310. When the device is charged, the current is transmitted from the transmission line 303 to the power-on block 302, and from the power-on block 306 to the transmission power bracket 310. When voltage mismatch occurs in the equipment, the sliding square plate 305 and the power-on square block 306 generate high temperature under the influence of voltage, and the generated temperature will heat the liquid inside the liquid tank 309, causing the liquid to expand and contract due to heat and cold, and move upward through the liquid tank 309. When the temperature reaches a certain level, the current will be transmitted to the transmission secondary line 314 through the expanded liquid, and the electric telescopic rod 301 will be driven to contract through the transmission secondary line 314, so that the power-on block 302 moves backward to the resistance block 307, thereby physically cutting off the connection with the equipment. When the current is interrupted and cooling is completed, the staff can drive the small telescopic rod 312 through the reset control block 313. At this time, the small telescopic rod 312 pushes the power-on block 302 to move toward the inside of the sliding square plate 305, so that the power-on block 302 contacts the power-on square block 306. The equipment can be restored to use through the above linkage.

[0043] After charging is completed, push the charger again to move the sliding plate 201 backward. At this time, the airbag box 107 controls the fixed rotating rod 106 to tilt up, and makes the rear part of the squeezing plate 108 squeeze and press the sliding plate 208, so that more liquid in the side oil tank 206 flows into the squeezing side plate 207, so that the squeezing side plate 207 is in a higher position, and controls the end of the fixed rotating rod 106 to go out and tilt up. At this time, the user can unplug the charger and complete the charging process.

[0044] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An electric vehicle charging pile interface protection device, comprising a support mechanism (1), the support mechanism (1) further comprising a device housing (101), a compression spring (102) fixedly connected to the inner wall of the device housing (101), a support rod (103) fixedly connected to the bottom of the device housing (101), and a base (104) fixedly connected to one end of the support rod (103) away from the device housing (101), characterized in that: Also includes: A fixing mechanism (2), the fixing mechanism (2) comprising a sliding plate (201) fixedly connected to an end of the extrusion spring (102) away from the device housing (101), a sliding groove (202) being provided on an outer wall of the sliding plate (201), and an electrical box housing (203) being fixedly connected to the outer wall of the sliding plate (201); An internal protection mechanism (3), the internal protection mechanism (3) comprising an electric telescopic rod (301) fixedly connected to the outer wall of the electrical box housing (203), an end of the electric telescopic rod (301) away from the electrical box housing (203) being fixedly connected to a power supply block (302), and a plurality of transmission lines (303) being fixedly connected to the outer wall of the electric telescopic rod (301); The support mechanism (1) further comprises a plurality of rotation grooves (105) provided on the outer wall of the device housing (101), and a plurality of fixed rotation rods (106) are rotationally connected to the inner walls of the plurality of rotation grooves (105); The support mechanism (1) further comprises a plurality of airbag boxes (107) fixedly connected to the outer wall of the device housing (101), a pressing plate (108) being fixedly connected to the outer wall of the device housing (101), and a pushing plate (109) being slidably connected to the top of the airbag box (107).

2. The electric vehicle charging pile interface protection device according to claim 1, characterized in that: One end of the airbag box (107) away from the device housing (101) is fixedly connected to the outer wall of the sliding plate (201), wherein the extrusion plate (108) has an outer shape of two layers, one high and one low.

3. The electric vehicle charging pile interface protection device according to claim 2, characterized in that: The fixing mechanism (2) further comprises an oil tank plate (204) fixedly connected to the top of the electrical box housing (203); a main oil tank (205) is fixedly connected to the inner wall of the oil tank plate (204); a side oil tank (206) is fixedly connected to the outer wall of the main oil tank (205); an extrusion side plate (207) is slidably connected to the top of the side oil tank (206); and a pressing slide plate (208) is slidably connected to the top of the main oil tank (205).

4. The electric vehicle charging pile interface protection device according to claim 3, characterized in that: The fixing mechanism (2) further comprises a device side plate (209) fixedly connected to the outer wall of the electrical box housing (203), and a limiting frame (210) is fixedly connected to the outer wall of the device side plate (209).

5. The electric vehicle charging pile interface protection device according to claim 4, characterized in that: The internal protection mechanism (3) further comprises a sliding rod (304) fixedly connected to the outer wall of the electrical box housing (203); the outer wall of the power-carrying block (302) is slidably connected to a sliding square plate (305); the inner wall of the sliding square plate (305) is fixedly connected to a power-carrying block (306); and the outer wall of the power-carrying block (306) is fixedly connected to a resistance block (307).

6. The electric vehicle charging pile interface protection device according to claim 5, characterized in that: The internal protection mechanism (3) further comprises a fixed bracket (308) fixedly connected to the outer wall of the sliding square plate (305); one end of the sliding rod (304) away from the electrical box housing (203) is fixedly connected to the outer wall of the fixed bracket (308); a liquid groove (309) is provided on the inner wall of the fixed bracket (308); a transmission secondary line (314) is fixedly connected to the outer wall of the liquid groove (309); and one end of the transmission secondary line (314) away from the liquid groove (309) is fixedly connected to the outer wall of the electric telescopic rod (301).

7. The electric vehicle charging pile interface protection device according to claim 6, characterized in that: The internal protection mechanism (3) further comprises a transmission power support (310) fixedly connected to an end of the fixed support (308) away from the sliding square plate (305), a pressing mainboard (311) fixedly connected to the outer wall of the transmission power support (310), a small telescopic rod (312) fixedly connected to the outer wall of the pressing mainboard (311), and a reset control block (313) fixedly connected to the outer wall of the pressing mainboard (311).

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