Charging pile short circuit detection circuit and novel charging pile

Abstract

The invention belongs to the technical field of electric vehicle charging piles, and discloses a charging pile short circuit detection circuit and a novel charging pile. When the charging pile short circuit detection circuit carries out short circuit detection, an external resistor is connected with the charging pile in series, and a charging pile plug is powered on; the current value and the voltage value of a circuit formed by the external resistor and the charging pile are measured through a multifunctional electric power meter, and if the calculated resistance value is the same as the resistance value of the external resistor, it is indicated that the charging pile is short-circuited; and if the calculated resistance value is greater than the resistance value of the external resistor, the charging pile is not short-circuited. According to the invention, the mode of measurement through a test pencil in the prior art is changed, and the measurement efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicle charging piles, and in particular to a charging pile short-circuit detection circuit and a novel charging pile. Background Art

[0002] Electric vehicle charging piles are charging devices that provide electricity for electric vehicles. They are an important link in the electric vehicle industry chain, connecting the power grid and electric vehicles, providing convenient and efficient charging services for electric vehicles.

[0003] It is very important to regularly perform short-circuit detection on electric vehicle charging piles. As the infrastructure for electric vehicle charging, the safety and stability of electric vehicle charging piles are directly related to the charging experience and safety of electric vehicle users. Short-circuit detection is one of the key links to ensure the safe and reliable operation of charging piles. By performing short-circuit protection tests on electric vehicle charging piles, not only the safety of users and electric vehicles is protected, but also the normal operation of charging piles and charging stations is maintained.

[0004] In traditional technology, when performing short-circuit detection on electric vehicle charging piles, workers usually use a tester to measure section by section. Although it can achieve the purpose of measuring whether the electric vehicle charging pile is short-circuited, the measurement process is cumbersome and takes a lot of time. Therefore, it is necessary to improve the design of related technologies. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a charging pile short-circuit detection circuit and a novel charging pile.

[0006] The above technical purpose of the present invention is achieved through the following technical scheme: a charging pile short-circuit detection circuit, an external resistor is connected in series with the charging pile, the charging pile plug is energized, and a multi-function power meter is used to measure the current value and voltage value of the circuit formed by the external resistor and the charging pile. If the calculated resistance value is the same as the resistance value of the external resistor, it means that the charging pile has a short circuit; if the calculated resistance value is greater than the resistance value of the external resistor, it means that the charging pile has not a short circuit.

[0007] The present application also discloses a novel charging pile, which adopts a charging pile short-circuit detection circuit for short-circuit detection. The novel charging pile includes a base and a charging pile body arranged above the base, the base is provided with a connecting component for movably connecting to the charging pile body, one side of the charging pile body is provided with a connector for connecting an external resistor, the bottom of the charging pile body is provided with a power supply line electrically connected to the internal circuit of the charging pile body, the end of the power supply line away from the charging pile body is connected to a charging gun, one side of the charging pile body is fixed with a placement tube for plugging and mating with the charging gun, and the base is provided with a tightening mechanism for tightening the power supply line when the charging gun is not charging.

[0008] The top of the lifting board is connected with the up-down knob of the driving mechanism, and the lower gear is connected with the driving mechanism, and the lower gear is connected with the driving mechanism by the driving mechanism. The tightening mechanism also includes a driving assembly for driving the bidirectional threaded rod to rotate. When the charging gun is not charging, it is plugged into the placement tube. The driving assembly drives the bidirectional threaded rod to rotate and moves the upper movable plate and the lower movable plate away from each other until the power line is straightened. When the charging gun is used for charging, the driving assembly drives the bidirectional threaded rod to rotate and moves the upper movable plate and the lower movable plate closer to each other, and the power line gradually relaxes.

[0009] Furthermore, the driving assembly includes a motor fixed to the top of the base, a driving gear keyed to the output shaft of the motor, and a first driven gear fixedly sleeved on the bidirectional threaded rod and meshing with the driving gear.

[0010] Furthermore, the connecting components are provided with two groups and are symmetrically arranged, each group of the connecting components includes a lower fixed plate fixed to the top of the base, a lower connecting rod rotatably mounted on the lower fixed plate, an upper connecting rod hinged to the side of the upper end of the lower connecting rod close to the center of the base, and an upper fixed plate fixed to the bottom of the charging pile body and rotatably connected to the upper end of the upper connecting rod. A traction mechanism is provided on the base for driving the charging pile body to rise and fall when the driving gear rotates.

[0011] Furthermore, the traction mechanism includes a transmission assembly and a traction assembly, the transmission assembly includes a transmission screw rotatably installed on the top of the base, a second driven gear fixedly sleeved on the transmission screw and meshing with the driving gear, and a U-shaped rod body sleeved on the transmission screw and threadedly connected to the transmission screw, the traction assembly is provided with two groups and is symmetrically arranged about the U-shaped rod body, and is respectively movably connected to the sides of the two upper connecting rods that are close to each other.

[0012] Furthermore, the traction assembly includes a fixed rod fixed to the end of the U-shaped rod body, a traction rod rotatably connected to the upper end of the fixed rod, a bending rod hinged to one end of the traction rod away from the fixed rod, and a U-shaped block fixed to the upper connecting rod and hinged to the bending rod.

[0013] Furthermore, a limiting block is fixed at the upper end of the transmission screw, and a rubber ring sleeved on the outside of the transmission screw is fixed on the top of the middle section of the U-shaped rod body; a ventilation groove is provided at the bottom of the charging pile body, and a plurality of lower ventilation holes connected to the interior of the charging pile body are provided on the top wall of the ventilation groove; a plurality of side ventilation holes connected to the interior of the charging pile body are provided on the side wall of the charging pile body, and the side ventilation holes are arranged obliquely, and the opening height of the side ventilation holes close to the interior of the charging pile body is greater than the opening height of the side ventilation holes away from the interior of the charging pile body.

[0014] Furthermore, a mounting tube coaxially arranged with the driving gear is fixed on the top of the driving gear, the upper end of the mounting tube is closed and the lower end is open, a fan blade is fixed on the upper end of the mounting tube, the output end of the motor passes through the driving gear and slidably cooperates with the driving gear, a limiting plate is fixed on the top of the output end of the motor, a connecting key is fixed on the side wall of the output end of the motor, a key groove cooperating with the connecting key is penetrated on the driving gear, a cylinder is fixed on the top of the base, a connecting block is fixed on the upper end of the piston rod of the cylinder, a circular groove and an annular groove are sequentially arranged on the bottom of the driving gear from bottom to top, the outer diameter of the circular groove is greater than or equal to the distance between the axis of the driving gear and the side of the piston rod of the cylinder away from the axis of the driving gear, the inner wall of the annular groove away from the side of the axis of the driving gear abuts against the side of the connecting block away from the axis of the driving gear, and the thickness of the connecting block is equal to the distance between the inner top wall of the annular groove and the inner bottom wall of the annular groove.

[0015] Furthermore, a mounting plate is fixed to one side of the charging gun, and a five-hole wire plug hole is arranged on the mounting plate. A cable core electrically connected to the charging gun and the five-hole wire plug hole is arranged in the power supply line.

[0016] In summary, the present invention has the following beneficial effects: 1. This application adopts an external resistor connected in series with the charging pile. After the charging pile plug is powered on, a multi-function power meter is directly used to measure the current value and voltage value of the circuit formed by the external resistor and the charging pile. The resistance value is obtained by calculating the ratio between the voltage value and the current value. If the resistance value is the same as the resistance value of the external resistor, it means that the charging pile is short-circuited. Otherwise, it means that the charging pile is not short-circuited. This changes the traditional method of measuring by using an electric tester and improves the measurement efficiency. 2. In this application, when the driving assembly is used to drive the bidirectional threaded rod to rotate, the staff only needs to turn on the motor. After the motor works, it drives the driving gear connected to its output shaft key, the first driven gear meshing with the driving gear, and the bidirectional threaded rod fixed to the first driven gear to rotate, so that the power supply line is tightened by the two lower rollers, two upper rollers and guide rollers when not in use. When charging the electric vehicle, the staff only needs to start the motor to run in reverse, so that the upper movable plate and the lower movable plate are close to each other, so that the two lower rollers and the two upper rollers are close to each other, the power supply line gradually loosens, and the staff can take out the charging gun to start charging; 3. In the present application, the ventilation grooves, the lower ventilation holes and the side ventilation holes cooperate with each other to facilitate the circulation of air inside the charging pile body to the outside, so that the charging pile body can dissipate heat during the charging process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a circuit diagram of embodiment 1 of the present invention; Figure 2 is a schematic diagram of the overall structure of Embodiment 1 of the present invention; Figure 3 yes Figure 1 The structural diagram after deleting the base and charging pile body; Figure 4 This is a schematic diagram of the structure of the embodiment 1 of the present invention for highlighting the power supply line when the charging pile charges the electric vehicle; Figure 5 yes Figure 4 The enlarged schematic diagram of point A in the middle; Figure 6 is a structural schematic diagram of a tensioning assembly for highlighting the embodiment 1 of the present invention; Figure 7 is a schematic diagram of the overall structure of Embodiment 2 of the present invention, which is used to highlight the state of the charging pile when it is not charging; Figure 8 This is a schematic diagram of the state of a charging pile when it is charging, which is used to highlight the state of a charging pile when it is charging; Fig. 9 It is a structural diagram of embodiment 3 of the present invention.

[0018] In the figure: 1, base; 2, charging pile body; 21, connector; 22, placement tube; 23, ventilation slot; 24, lower ventilation hole; 25, side ventilation hole; 3, power supply line; 31, charging gun; 4, tensioning mechanism; 41, tensioning assembly; 411, vertical plate; 412, guide roller; 413, two-way threaded rod; 414, guide rod; 415, upper movable plate; 416, upper mounting plate; 417, upper roller; 418, lower movable plate; 419, lower mounting plate; 410, lower roller; 42, driving assembly; 421, motor; 4211, limit plate; 4212, connecting key; 422, driving gear; 4221, keyway; 4222, circular groove; 4223, annular groove; 423, the first A driven gear; 5. Connecting assembly; 51. Lower fixed plate; 52. Lower connecting rod; 53. Upper connecting rod; 54. Upper fixed plate; 6. Traction mechanism; 61. Transmission assembly; 611. Transmission screw; 6111. Limit block; 612. Second driven gear; 613. U-shaped rod; 6131. ​​Rubber ring; 62. Traction assembly; 621. Fixed rod; 622. Traction rod; 623. Bending rod; 624. U-shaped block; 7. Mounting tube; 71. Fan blade; 8. Cylinder; 81. Connecting block; 9. Lower cover; 91. Lower movable groove; 92. First button; 93. Second button; 10. Upper cover; 101. Upper movable groove; 11. Mounting plate; 111. Five-hole plug hole; 12. Cable core. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0020] like Figure 1-6 As shown, the embodiment of the present application discloses a charging pile short-circuit detection circuit, in which an external resistor is connected in series with the charging pile, the charging pile plug is powered on, and a multifunctional power meter is used to measure the current value and voltage value of the circuit formed by the external resistor and the charging pile. If the calculated resistance value is the same as the resistance value of the external resistor, it means that the charging pile is short-circuited; if the calculated resistance value is greater than the resistance value of the external resistor, it means that the charging pile is not short-circuited. The present application uses an external resistor in series with the charging pile. After the charging pile plug is powered on, a multifunctional power meter is directly used to measure the current value and voltage value of the circuit formed by the external resistor and the charging pile. The resistance value is obtained by calculating the ratio between the voltage value and the current value. If it is the same as the resistance value of the external resistor, it means that the charging pile is short-circuited. Otherwise, it means that the charging pile is not short-circuited. This changes the traditional method of measuring with an electric tester and improves the measurement efficiency.

[0021] The embodiment of the present application also discloses a new charging pile, which uses the above-mentioned charging pile short-circuit detection circuit to perform short-circuit detection. The new charging pile includes a base 1 and a charging pile body 2 arranged above the base 1 (that is, the charging pile mentioned above. In the figure, the charging pile body 2 is only a simple diagram. In order to facilitate the installation or maintenance of the parts inside the charging pile body 2, an openable side door needs to be provided on one side of the charging pile body 2. The charging pile plug and the side door are not shown in the figure. The current output by the charging pile body 2 is a direct current). The internal structure and the use principle of the charging pile body 2 belong to the prior art and there is no need to elaborate on them here.

[0022] The base 1 is provided with a connection assembly 5 for active connection with the charging pile body 2, and a connector 21 for connecting an external resistor is provided on one side of the charging pile body 2. When connecting the circuit, the staff can electrically connect two wires at both ends of the external resistor, and then electrically connect the two wires to the two connectors 21 respectively, and finally use a multifunctional power meter to measure the current value and voltage value of the circuit respectively. The bottom of the charging pile body 2 is provided with a power supply line 3 electrically connected to the internal circuit of the charging pile body 2, and the end of the power supply line 3 away from the charging pile body 2 is connected to a charging gun 31, and a placement tube 22 for plugging and matching the charging gun 31 is fixed on one side of the charging pile body 2. The base 1 is provided with a tightening mechanism 4 for tightening the power supply line 3 when the charging gun 31 is not charging. When the charging gun 31 is not charging, the charging gun 31 is plugged into the placement tube 22, and the staff can tighten the power supply line 3 through the tightening mechanism 4, thereby avoiding the situation where the power supply line 3 is easily pulled by external force due to looseness, and the charging gun 31 is separated from the placement tube 22.

[0023] The tensioning mechanism 4 includes a tensioning assembly 41, which includes a vertical plate 411 fixed to the top of the base 1, a guide roller 412 rotatably mounted on the vertical plate 411, a bidirectional threaded rod 413 rotatably mounted on the top of the base 1, and a guide rod 414 fixed to the top of the base 1, the bidirectional threaded rod 413 is provided with two sections of threads with equal pitches and opposite rotation directions, the tensioning assembly 41 also includes an upper movable plate 415 sleeved on and threadedly connected to the upper thread of the bidirectional threaded rod 413, an upper mounting plate 416 fixed to the bottom of the upper movable plate 415, an upper roller 417 rotatably mounted on the upper mounting plate 416, a lower movable plate 418 sleeved on and threadedly connected to the lower thread of the bidirectional threaded rod 413, a lower mounting plate 419 fixed to the top of the lower movable plate 418, and a lower roller 410 rotatably mounted on the lower mounting plate 419, The guide rod 414 passes through the upper movable plate 415 and the lower movable plate 418 and is slidably matched with the upper movable plate 415 and the lower movable plate 418. There are two upper rollers 417 and two lower rollers 410. The power line 3 passes through the two lower rollers 410 and the two upper rollers 417 in sequence, and then bypasses the guide roller 412; the tensioning mechanism 4 also includes a driving component 42 for driving the bidirectional threaded rod 413 to rotate. When the charging gun 31 is not charging, it is plugged into the placement tube 22. The driving component 42 drives the bidirectional threaded rod 413 to rotate and makes the upper movable plate 415 and the lower movable plate 418 move away from each other until the power line 3 is straightened; when the charging gun 31 is used to charge, the driving component 42 drives the bidirectional threaded rod 413 to rotate and makes the upper movable plate 415 and the lower movable plate 418 move closer to each other, and the power line 3 gradually relaxes.

[0024] When assembling the equipment, the power supply line 3 passes through the two lower rollers 410 and the two upper rollers 417 in sequence, and then passes around the guide roller 412. After the charging gun 31 is plugged into the placement tube 22, when the tightening mechanism 4 is used to tighten the power supply line 3, the staff drives the bidirectional threaded rod 413 to rotate through the driving assembly 42. Since the bidirectional threaded rod 413 is threadedly connected with the upper movable plate 415 and the lower movable plate 418, the guide rod 414 is slidably matched with the upper movable plate 415 and the lower movable plate 418, so that the upper movable plate 415 and the lower movable plate 418 are separated from each other, and the two lower rollers 410, the two upper rollers 417 and the guide roller 412 cooperate to gradually tighten the power supply line 3.

[0025] Specifically: the driving assembly 42 includes a motor 421 fixed to the top of the base 1, a driving gear 422 connected to the output shaft key of the motor 421, and a first driven gear 423 fixedly sleeved on the bidirectional threaded rod 413 and meshed with the driving gear 422. When the driving assembly 42 is used to drive the bidirectional threaded rod 413 to rotate, the staff only needs to turn on the motor 421. After the motor 421 works, the driving gear 422 connected to the output shaft key, the first driven gear 423 meshed with the driving gear 422, and the bidirectional threaded rod 413 fixed to the first driven gear 423 are all rotated, so that the power supply line 3 is tightened by the two lower rollers 410, the two upper rollers 417 and the guide roller 412 when not in use. When charging the electric vehicle, the staff only needs to start the motor 421 to run in reverse, so that the upper movable plate 415 and the lower movable plate 418 are close to each other, so that the two lower rollers 410 and the two upper rollers 417 are close to each other, and the power supply line 3 gradually relaxes. The staff can take out the charging gun 31 to perform the charging action.

[0026] The connection assembly 5 is provided with two groups and is symmetrically arranged. Each group of the connection assembly 5 includes a lower fixed plate 51 fixed to the top of the base 1, a lower connecting rod 52 rotatably mounted on the lower fixed plate 51, an upper connecting rod 53 hinged to the side of the upper end of the lower connecting rod 52 close to the center of the base 1, and an upper fixed plate 54 fixed to the bottom of the charging pile body 2 and rotatably connected to the upper end of the upper connecting rod 53. The base 1 is provided with a traction mechanism 6 for driving the charging pile body 2 to rise and fall when the driving gear 422 rotates. The traction mechanism 6 includes a transmission assembly 61 and a traction assembly 62. The transmission assembly 61 includes a transmission screw 611 rotatably mounted on the top of the base 1, a second driven gear 612 fixedly sleeved on the transmission screw 611 and meshed with the driving gear 422, and a U-shaped rod body 613 sleeved on the transmission screw 611 and threadedly connected to the transmission screw 611. The traction assembly 62 is provided with two groups and is symmetrically arranged about the U-shaped rod body 613, and is respectively movably connected to the sides of the two upper connecting rods 53 close to each other.

[0027] After the motor 421 works and drives the driving gear 422 to rotate, the driving gear 422 drives the second driven gear 612 meshing with it to rotate, thereby causing the transmission screw 611 to rotate. Since the transmission screw 611 is threadedly connected to the U-shaped rod body 613, and the two ends of the U-shaped rod body 613 are movably connected to the upper connecting rods 53 on both sides through two sets of traction components 62, the angle between the upper connecting rod 53 and the lower connecting rod 52 is gradually reduced, so that the charging pile body 2 gradually descends, so that the upper end of the power supply line 3 gradually descends to a position close to the lower movable plate 418, which is beneficial to increase the stretchable distance of the power supply line 3, and is beneficial to charging electric vehicles that are far away from the charging pile body 2. In addition, the height of the charging pile body 2 is reduced, which is convenient for users of different heights to perform charging operations.

[0028] In this embodiment, the traction assembly 62 includes a fixed rod 621 fixed to the end of the U-shaped rod body 613, a traction rod 622 rotatably connected to the upper end of the fixed rod 621, a bending rod 623 hinged to one end of the traction rod 622 away from the fixed rod 621, and a U-shaped block 624 fixed to the upper connecting rod 53 and hinged to the bending rod 623. When the motor 421 works and causes the transmission screw 611 to rotate, the U-shaped rod body 613 is lifted and lowered, and under the action of the traction rod 622 and the bending rod 623, the side of the upper connecting rod 53 close to the U-shaped block 624 is stressed, so that the angle between the upper connecting rod 53 and the lower connecting rod 52 is gradually reduced or increased.

[0029] A limit block 6111 is fixed to the upper end of the transmission screw 611, and a rubber ring 6131 is fixed to the top of the middle section of the U-shaped rod 613 and is sleeved on the outside of the transmission screw 611. The setting of the limit block 6111 prevents the U-shaped rod 613 from being separated from the upper end of the transmission screw 611, and the setting of the rubber ring 6131 enables flexible contact between the bottom of the limit block 6111 and the top of the middle section of the U-shaped rod 613, thereby reducing the probability of extrusion damage between the U-shaped rod 613 and the limit block 6111.

[0030] The bottom of the charging pile body 2 is provided with a ventilation groove 23, the top wall of the ventilation groove 23 is provided with a plurality of lower ventilation holes 24 connected with the inside of the charging pile body 2, and the side wall of the charging pile body 2 is provided with a plurality of side ventilation holes 25 connected with the inside of the charging pile body 2, the side ventilation holes 25 are arranged obliquely, and the opening height of the side ventilation holes 25 close to the inside of the charging pile body 2 is greater than the opening height of the side ventilation holes 25 away from the inside of the charging pile body 2. The ventilation groove 23, the lower ventilation holes 24 and the side ventilation holes 25 cooperate to facilitate the air inside the charging pile body 2 to circulate with the outside, so that the charging pile body 2 can dissipate heat during the charging process.

[0031] A mounting tube 7 coaxially arranged with the driving gear 422 is fixed on the top of the driving gear 422. The upper end of the mounting tube 7 is closed and the lower end is open. A fan blade 71 is fixed on the upper end of the mounting tube 7. The output end of the motor 421 passes through the driving gear 422 and slides with the driving gear 422. A limiting plate 4211 is fixed on the top of the output end of the motor 421. A connecting key 4212 is fixed on the side wall of the output end of the motor 421. A key slot 4221 cooperating with the connecting key 4212 is penetrated on the driving gear 422. A cylinder 8 is fixed on the top of the base 1. A connecting block 81 is fixed to the upper end of the piston rod of the cylinder 8, and a circular groove 4222 and an annular groove 4223 are sequentially arranged at the bottom of the driving gear 422 from bottom to top. The outer diameter of the circular groove 4222 is greater than or equal to the distance between the axis of the driving gear 422 and the side of the piston rod of the cylinder 8 away from the axis of the driving gear 422. The inner wall of the annular groove 4223 away from the axis of the driving gear 422 abuts against the side of the connecting block 81 away from the axis of the driving gear 422. The thickness of the connecting block 81 is equal to the distance between the inner top wall of the annular groove 4223 and the inner bottom wall of the annular groove 4223.

[0032] In order to facilitate the heat dissipation of the charging pile during the charging process of the electric vehicle, the staff only needs to adjust the cylinder 8 so that the piston rod of the cylinder 8 drives the driving gear 422 to disengage from the first driven gear 423 and the second driven gear 612. Then, the staff turns on the motor 421. After the motor 421 works, it drives the installation cylinder 7 and the fan blade 71 fixed to the upper end of the installation cylinder 7 to rotate. The wind blown by the fan blade 71 enters the interior of the charging pile body 2 from the ventilation slot 23 and the lower ventilation hole 24, and then flows out from the upper ventilation hole, reducing the probability of affecting the service life of the charging pile body 2 due to the excessive temperature inside the charging pile body 2. After charging is completed, the staff only needs to turn off the motor 421, and then adjust the position of the first driven gear 423 and the second driven gear 612 until the first driven gear 423 and the second driven gear 612 can stop adjusting when the driving gear 422 can remain in meshing after the reset, and finally adjust the cylinder 8 to reset the driving gear 422.

[0033] like Figure 7-8As shown, the difference between this embodiment and embodiment 1 is only that: in order to enhance the aesthetics of the charging pile, a lower cover body 9 is fixed on the top of the base 1, and an upper cover body 10 is fixed on the bottom of the charging pile body 2, the outer wall of the upper cover body 10 is in contact with the inner wall of the lower cover body 9, and an upper movable groove 101 for the upper connecting rod 53, the lower connecting rod 52 and the power supply line 3 to move is provided at the intersection between the side wall of the upper cover body 10 and the bottom of the upper cover body 10, and a lower movable groove 91 for the upper connecting rod 53, the lower connecting rod 52 and the power supply line 3 to move is provided at the intersection between the side wall of the lower cover body 9 and the top of the lower cover body 9 (the staff can adjust the positions of the first driven gear 423 and the second driven gear 612 through the lower movable groove 91, so that the first driven gear 423 and the second driven gear 612 can remain in meshing state after the driving gear 422 is reset). In order to facilitate the staff to control the motor 421 and the cylinder 8, the outer wall of the lower cover body 9 is provided with a first button 92 electrically connected to the motor 421 and a second button 93 electrically connected to the cylinder 8.

[0034] like Fig. 9 As shown, the only difference between this embodiment and embodiment 2 is that: a mounting plate 11 is fixed on one side of the charging gun 31, and a five-hole plug hole 111 is provided on the mounting plate 11, and a cable core 12 electrically connected to the charging gun 31 and the five-hole plug hole 111 is provided in the power supply line 3. When the vehicle to be charged is a vehicle with a plug, the owner needs to adjust the position of the mounting plate 11 and expose the five-hole plug hole 111, and then directly take out the plug and insert it into the five-hole plug hole 111 to charge (there is no need to extend the power supply line 3 of the charging gun 31 in the above manner, and the operation is simpler). When the vehicle to be charged is a vehicle without a plug, the owner needs to take out the charging gun 31 and extend the power supply line 3 of the electric gun in the above manner to charge.

[0035] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A charging pile short circuit detection circuit, Its characteristics are: Connect an external resistor in series with the charging pile, power on the charging pile plug, and use a multi-function power meter to measure the current and voltage of the circuit formed by the external resistor and the charging pile. If the calculated resistance value is the same as the resistance value of the external resistor, it means that the charging pile has a short circuit; if the calculated resistance value is greater than the resistance value of the external resistor, it means that the charging pile has not a short circuit.

2. A new type of charging pile, Its characteristics are: A short-circuit detection is performed using the charging pile short-circuit detection circuit described in claim 1. The new charging pile comprises a base (1) and a charging pile body (2) arranged above the base (1). The base (1) is provided with a connecting component (5) for movably connecting to the charging pile body (2). A connector (21) for connecting an external resistor is provided on one side of the charging pile body (2). A power supply line (3) electrically connected to the internal circuit of the charging pile body (2) is provided at the bottom of the charging pile body (2). A charging gun (31) is connected to one end of the power supply line (3) away from the charging pile body (2). A placement tube (22) for plugging and mating with the charging gun (31) is fixed on one side of the charging pile body (2). A tightening mechanism (4) for tightening the power supply line (3) when the charging gun (31) is not charging is provided on the base (1).

3. A new type of charging pile according to claim 2, Its characteristics are: The tensioning mechanism (4) comprises a tensioning assembly (41), the tensioning assembly (41) comprising a vertical plate (411) fixed to the top of the base (1), a guide roller (412) rotatably mounted on the vertical plate (411), a bidirectional threaded rod (413) rotatably mounted on the top of the base (1), and a guide rod (414) fixed to the top of the base (1), the bidirectional threaded rod (413) being provided with two sections of threads with equal pitch and opposite rotation directions, the tensioning assembly (41) further comprising an upper movable plate (415) sleeved on the upper section of the thread of the bidirectional threaded rod (413) and threadedly connected, an upper mounting plate (416) fixed to the bottom of the upper movable plate (415), and a guide roller (416) rotatably mounted on the upper mounting plate (416). (416), an upper roller (417) on the upper movable plate (415), a lower movable plate (418) sleeved on the lower thread of the bidirectional threaded rod (413) and threadedly connected, a lower mounting plate (419) fixed to the top of the lower movable plate (418), and a lower roller (410) rotatably mounted on the lower mounting plate (419), the guide rod (414) passes through the upper movable plate (415) and the lower movable plate (418) and is slidably matched with the upper movable plate (415) and the lower movable plate (418), two upper rollers (417) and two lower rollers (410) are provided, and the power supply line (3) passes through the two lower rollers (410) and the two upper rollers (417) in sequence, and then bypasses the guide roller (412); The tightening mechanism (4) also includes a driving assembly (42) for driving the bidirectional threaded rod (413) to rotate. When the charging gun (31) is not charging, it is plugged into the placement tube (22). The driving assembly (42) drives the bidirectional threaded rod (413) to rotate and causes the upper movable plate (415) and the lower movable plate (418) to move away from each other until the power supply line (3) is straightened. When the charging gun (31) is used for charging, the driving assembly (42) drives the bidirectional threaded rod (413) to rotate and causes the upper movable plate (415) and the lower movable plate (418) to move closer to each other, and the power supply line (3) is gradually relaxed.

4. A new type of charging pile according to claim 3, Its characteristics are: The driving assembly (42) comprises a motor (421) fixed to the top of the base (1), a driving gear (422) keyed to the output shaft of the motor (421), and a first driven gear (423) fixedly sleeved on the bidirectional threaded rod (413) and meshing with the driving gear (422).

5. A new type of charging pile according to claim 4, Its characteristics are: The connection assembly (5) is provided with two groups and is symmetrically arranged, each group of the connection assembly (5) comprises a lower fixing plate (51) fixed to the top of the base (1), a lower connecting rod (52) rotatably mounted on the lower fixing plate (51), an upper connecting rod (53) hinged to the upper end of the lower connecting rod (52) close to the center of the base (1), and an upper fixing plate (54) fixed to the bottom of the charging pile body (2) and rotatably connected to the upper end of the upper connecting rod (53), and a traction mechanism (6) is provided on the base (1) for driving the charging pile body (2) to rise and fall when the driving gear (422) rotates.

6. A new type of charging pile according to claim 5, Its characteristics are: The traction mechanism (6) comprises a transmission assembly (61) and a traction assembly (62); the transmission assembly (61) comprises a transmission screw (611) rotatably mounted on the top of the base (1), a second driven gear (612) fixedly sleeved on the transmission screw (611) and meshing with the driving gear (422), and a U-shaped rod body (613) sleeved on the transmission screw (611) and threadedly connected to the transmission screw (611); the traction assembly (62) comprises two groups of U-shaped rod bodies (613) symmetrically arranged about the U-shaped rod bodies (613), and are respectively movably connected to the mutually adjacent sides of the two upper connecting rods (53).

7. A new type of charging pile according to claim 6, Its characteristics are: The traction assembly (62) comprises a fixed rod (621) fixed to the end of a U-shaped rod body (613), a traction rod (622) rotatably connected to the upper end of the fixed rod (621), a bending rod (623) hinged to one end of the traction rod (622) away from the fixed rod (621), and a U-shaped block (624) fixed to the upper connecting rod (53) and hinged to the bending rod (623).

8. A new type of charging pile according to claim 7, Its characteristics are: A limit block (6111) is fixed at the upper end of the transmission screw (611), and a rubber ring (6131) sleeved on the outside of the transmission screw (611) is fixed at the top of the middle section of the U-shaped rod body (613); a ventilation groove (23) is provided at the bottom of the charging pile body (2), and a plurality of lower ventilation holes (24) connected to the inside of the charging pile body (2) are provided on the top wall of the ventilation groove (23); a plurality of side ventilation holes (25) connected to the inside of the charging pile body (2) are provided on the side wall of the charging pile body (2), and the side ventilation holes (25) are arranged obliquely, and the opening height of the side ventilation holes (25) close to the inside of the charging pile body (2) is greater than the opening height of the side ventilation holes (25) away from the inside of the charging pile body (2).

9. A new type of charging pile according to claim 8, Its characteristics are: A mounting tube (7) coaxially arranged with the driving gear (422) is fixed on the top of the driving gear (422); the mounting tube (7) is closed at the upper end and open at the lower end; a fan blade (71) is fixed on the upper end of the mounting tube (7); the output end of the motor (421) passes through the driving gear (422) and is slidably matched with the driving gear (422); a limiting plate (4211) is fixed on the top of the output end of the motor (421); a connecting key (4212) is fixed on the side wall of the output end of the motor (421); a key slot (4221) matched with the connecting key (4212) is penetrated on the driving gear (422); a cylinder (8) is fixed on the top of the base (1); A connecting block (81) is fixed to the upper end of the piston rod of the cylinder (8); a circular groove (4222) and an annular groove (4223) are sequentially arranged at the bottom of the driving gear (422) from bottom to top; the outer diameter of the circular groove (4222) is greater than or equal to the distance between the axis of the driving gear (422) and the side of the piston rod of the cylinder (8) away from the axis of the driving gear (422); the inner wall of the annular groove (4223) away from the axis of the driving gear (422) abuts against the side of the connecting block (81) away from the axis of the driving gear (422); and the thickness of the connecting block (81) is equal to the distance between the inner top wall of the annular groove (4223) and the inner bottom wall of the annular groove (4223).

10. A new type of charging pile according to claim 9, Its characteristics are: A mounting plate (11) is fixed to one side of the charging gun (31), a five-hole wire insertion hole (111) is provided on the mounting plate (11), and a cable core (12) is provided in the power supply line (3) and is electrically connected to the charging gun (31) and the five-hole wire insertion hole (111) respectively.

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