A charging pile safety protection device

Abstract

The present invention relates to a charging pile safety protection device, comprising a pulling detection mechanism, a control device, a circuit breaker and an alarm; the pulling mechanism comprises a floating block, a through hole is provided in the middle of the floating block, a cable passes through the through hole, and a distance sensor is installed, the distance sensor is used to detect the height position of the floating block and feed back the height position of the floating block to the control device; the circuit breaker is arranged inside the charging pile body and the circuit breaker is connected to the output circuit of the charging pile; the control device is preset with a first height position and a second height position, wherein the second height position is lower than the first height position; during the charging process or after the charging is completed, when the floating block reaches the first height position, the control device controls the alarm to emit an alarm sound, and when the position of the floating block reaches the second height position, the control device controls the circuit breaker to change from the on state to the off state. The safety protection device can play the role of pulling alarm and emergency protection, and effectively prevent the charging pile from being damaged.

Description

Technical Field

[0001] The invention relates to an emergency protection circuit device, and in particular to a charging pile safety protection device. Background Art

[0002] With the development of economy, cars have entered more and more families. Traditional fuel vehicles will cause serious air pollution and noise pollution. As an alternative to fuel vehicles, new energy vehicles are not only energy efficient, low cost, but also pollution-free.

[0003] In recent years, the production and sales of new energy vehicles in China have grown by leaps and bounds. At present, China has become the world's largest new energy vehicle production and sales market. As supporting facilities for new energy vehicles, charging piles are becoming more and more popular, bringing great convenience to the majority of new energy vehicle owners.

[0004] At present, it often happens that car owners forget to unplug the gun after charging and start driving the car, causing the vehicle to pull the charging pile and damage the charging pile, causing huge economic losses to the charging pile operator. Summary of the invention

[0005] Based on the above description, the present invention provides a charging pile safety protection device, which can play the role of pulling alarm and emergency protection, and effectively prevent the charging pile from being damaged.

[0006] The technical solution of the present invention to solve the above technical problems is as follows:

[0007] A charging pile safety protection device comprises a pulling detection mechanism, a control device, a circuit breaker and an alarm; the pulling detection mechanism is arranged on one side of the charging pile body where the cable is led out, the pulling detection mechanism comprises an upper support plate and a lower support plate connected and fixed to the outer shell of the charging pile body, a pair of vertical guide rods are symmetrically arranged between the upper support plate and the lower support plate, the upper end and the lower end of the guide rod are respectively connected to the upper support plate and the lower support plate, a floating block is arranged between the two groups of guide rods, a first through hole is arranged in the middle of the floating block, the cable passes through the first through hole, sliders are symmetrically fixed on both sides of the floating block, the sliders are movably sleeved on the guide rods, a spring is also sleeved on the guide rods, the upper end and the lower end of the spring are respectively in contact with the slider and the lower support plate; the upper support plate A distance sensor is also installed on the charging pile, which is connected to the control device. The distance sensor is used to detect the height position of the floating block and feed back the height position of the floating block to the control device; the circuit breaker is arranged inside the charging pile body and the circuit breaker is connected to the output circuit of the charging pile, and the circuit breaker is connected to the control device and controlled by the control device; the alarm is connected to the control device and controlled by the alarm device; the control device is preset with a first height position and a second height position, wherein the second height position is lower than the first height position; during the charging process or after charging is completed, when the floating block reaches the first height position, the control device controls the alarm to emit an alarm sound, and when the position of the floating block reaches the second height position, the control device controls the circuit breaker to change from an on state to an off state.

[0008] As a preferred solution: the control device is also connected to the charging control host of the charging pile body. When the position of the floating block reaches the first position, the control device sends a feedback signal to the charging control host; after receiving the feedback signal, the charging control host sends a control instruction to the charging power adjustment module, thereby reducing the output power of the charging pile.

[0009] As a preferred embodiment: it also includes a disconnection mechanism, which includes a base, a fixing cylinder and an electromagnet; the base is fixed to the outer shell of the charging pile body, and a receiving cavity is provided on the base, and the receiving cavity is used for the fixing cylinder to enter; an electrode is led out from the tail end of the cable, and the electrode is connected to the wire in the cable, and the fixing cylinder is sleeved on the tail end of the cable and fixed to the tail end of the cable; a conductive docking sleeve is provided in the receiving cavity, and the electrode is inserted into the docking sleeve, and the docking sleeve is connected to the power output end of the charging pile through a conductive connector; an installation cylinder is provided on the base and above the receiving cavity, and the installation cylinder is connected and fixed to the base, and the The fixing tube passes through the mounting tube and enters into the accommodating cavity; a second through hole is opened on the side of the mounting tube, and a positioning hole is set on the side wall of the fixing tube at a position corresponding to the second through hole; the electromagnet is fixed on the side of the mounting tube, and the locking shaft of the electromagnet passes through the second through hole and enters into the positioning hole; the electromagnet is connected to the control device and controlled by the control device; the control device is also preset with a third height position, and the third height position is lower than the second height position. When the distance sensor detects that the floating block reaches the third height position, the control device controls the electromagnet to disengage its locking shaft from the positioning hole, thereby unlocking the fixing tube, and the tail end of the cable will be disconnected from the base at this time.

[0010] As a preferred solution: it also includes a communication module, which is connected to the control device; when the floating block reaches the first height position, the control module controls the communication module to send an alarm message to the operator's management personnel.

[0011] As a preferred solution: it also includes a camera module installed on the outer shell of the charging pile body, and the camera module is connected to the control device; when the floating block reaches the first height position, the control device controls the camera module to start shooting the video image in front of the charging pile body, and at the same time the control device controls the communication module to send the video data to the operator.

[0012] As a preferred solution: the communication module is a WIFI module or an IoT card communication module.

[0013] Compared with the prior art, the technical solution of the present application has the following beneficial technical effects: the safety protection device detects the degree of cable pulling by setting a pulling detection mechanism. When the floating block of the pulling detection mechanism reaches the first height position, the alarm sounds an alarm to remind the user that the gun is not drawn; if the user does not notice the alarm or the starting speed is too fast to brake the car immediately, when the position of the floating block reaches the second height position, the circuit breaker changes from the on state to the off state, thereby cutting off the power supply of the cable and playing a safety protection role. At this time, even if the cable is torn off, there will be no leakage or electric shock accidents. The safety protection device can play the role of pulling alarm and emergency protection, effectively preventing the damage of the charging pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the structure of the charging pile protection device in this embodiment;

[0015] Figure 2 for Figure 1 A magnified view of part A in FIG.

[0016] Figure 3 for Figure 1 A magnified view of part B in FIG.

[0017] Figure 4 for Figure 3 The enlarged view of the C part in FIG.

[0018] Figure 5 Schematic diagram of the circuit of the protection device in this embodiment.

[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0020] 1. Charging pile body; 2. Display screen; 3. Camera; 4. Alarm; 5. Cable; 6. Charging gun; 7. Lower support plate; 8. Upper support plate; 9. Guide rod; 10. Floating block; 11. First through hole; 12. Slider; 13. Spring; 14. Distance sensor; 15. Base; 16. Fixing cylinder; 17. Accommodating cavity; 18. Docking sleeve; 19. Connector; 20. Electrode; 21. Electromagnet; 22. Second through hole; 23. Positioning hole; 24. Locking shaft; 25. Installation cylinder. DETAILED DESCRIPTION

[0021] A charging pile safety protection device comprises a pulling detection mechanism, a disconnection mechanism, a control device, a circuit breaker and an alarm 4.

[0022] The charging pile body 1 comprises a shell, a display screen 2 arranged on the shell, and a charging control host and a charging power adjustment module arranged in the shell.

[0023] Reference Figure 1 and Figure 2, the pulling detection mechanism in this embodiment is arranged on the side of the charging pile body 1 where the cable 5 is led out. The pulling detection mechanism includes an upper support plate 8 and a lower support plate 7 connected and fixed to the outer shell of the charging pile body 1, and a pair of vertical guide rods 9 are symmetrically arranged between the upper support plate 8 and the lower support plate 7, and the upper end and the lower end of the guide rod 9 are respectively connected to the upper support plate 8 and the lower support plate 7. A floating block 10 is arranged between the two groups of guide rods 9, and a first through hole 11 is arranged in the middle of the floating block 10, and the cable 5 passes through the first through hole 11. Slide blocks 12 are symmetrically fixed on both sides of the floating block 10, and the slide blocks 12 are movably sleeved on the guide rods 9, so that the slide blocks 12 can slide up and down along the guide rods 9. A spring 13 is also sleeved on the guide rod 9, and the upper end and the lower end of the spring 13 are in contact with the slide block 12 and the lower support plate 7 respectively. A distance sensor 14 is also mounted on the upper support plate 8 . The distance sensor 14 is located above the floating block 10 and faces the floating block 10 . The distance sensor 14 is used to detect the height position of the floating block 10 .

[0024] The circuit breaker (not shown in the figure) in this embodiment is arranged inside the charging pile body 1, and the circuit breaker is connected to the output circuit of the charging pile. When the circuit breaker is disconnected, the path between the charging pile body 1 and the cable 5 is cut off, so that the charging gun 6 can be powered off in an emergency. When the circuit breaker is turned on, the path between the charging pile body 1 and the line is reopened.

[0025] Reference Figure 5 , the control device in this embodiment includes a control module, a power module and a storage module.

[0026] like Figure 1 As shown, the alarm 4 is arranged on the outer shell of the charging pile body 1.

[0027] The signal output end of the distance sensor 14 is connected to the sampling signal input end of the control module; the control signal output end of the control module is connected to the control end of the circuit breaker, and the control module can control the on and off of the circuit breaker by outputting a control signal to the circuit breaker; the control signal output end of the control module is connected to the control end of the alarm 4; the storage module is connected to the read-write end of the control module; the power supply module is used to supply power to the control device, the distance sensor 14 and the circuit breaker.

[0028] The working principle of the safety protection device is:

[0029] The control module is preset with a first height position and a second height position, wherein the second height position is lower than the first height position.

[0030] Initially, the circuit breaker is in the on state, and the floating block 10 is at its highest position.

[0031] After the user removes the charging gun 6 from the charging pile body 1 and plugs it into the car charging port, the cable 5 will exert downward pressure on the floating block 10 to move the floating block 10 downward for a distance. During the charging process, as long as the cable is not pulled, the position of the floating block 10 remains unchanged.

[0032] During the charging process or after charging, if the user forgets to draw the gun and drives the car directly, the cable 5 is pulled forward, and the cable 5 applies a greater downward pressure on the floating block 10 to lower the position of the floating block 10, and the spring 13 is further compressed as the floating block 10 descends.

[0033] The distance sensor 14 detects the height position of the floating block 10 in real time and feeds back the detected height position to the control module. The control module compares the detected height position with the first height position. When the floating block 10 reaches the first height position, the control module sends an "alarm" control signal to the alarm 4. At this time, the alarm 4 sends an alarm sound to remind the user that the gun is not drawn.

[0034] If the user does not notice the alarm or the vehicle starts too fast to brake immediately, the cable 5 will continue to be pulled forward by the vehicle. The floating block 10 will continue to descend. When the floating block 10 reaches the second height position, the control module sends a "disconnect" signal to the circuit breaker. At this time, the circuit breaker changes from the on state to the off state, thereby cutting off the power supply of the cable 5, which plays a role in safety protection. At this time, even if the cable 5 is torn, no leakage or electric shock accident will occur.

[0035] In this embodiment, the communication port of the control module is also connected to the communication port of the charging control host of the charging pile body 1. When the position of the floating block 10 reaches the first position, the control module sends a feedback signal to the charging control host; after receiving the feedback signal, the charging control host sends a control instruction to the charging power adjustment module, thereby reducing the output power of the charging pile; the subsequent circuit breaker is subjected to a smaller current impact when disconnected, which plays a role in protecting the circuit breaker.

[0036] The control device in this embodiment further includes a communication module, which is connected to the communication port of the control module. When the floating block 10 reaches the first height position, the control module controls the communication module to send an alarm message to the operator's management personnel to remind the management personnel immediately.

[0037] The communication module in this embodiment is a WIFI module or an IoT card communication module.

[0038] Reference Figure 1 The safety protection device in this embodiment also includes a camera 3 module installed on the outer shell of the charging pile body 1, and the camera 3 module is connected to the control module.

[0039] When the floating block 10 reaches the first height position, the control module controls the camera 3 module to start shooting the video image in front of the charging pile body 1, and the video image data is stored in the storage module. At the same time, the control module controls the communication module to send the video data to the operator. The captured video image data can facilitate the charging pile operator to investigate and collect evidence on the behavior of damaging the charging pile.

[0040] Reference Figure 1 , Figure 3 and Figure 4 The disconnection mechanism in this embodiment includes a base 15, a fixing cylinder 16 and an electromagnet 21. The base 15 is fixed to the outer shell of the charging pile body 1, and a receiving cavity 17 is provided on the base 15, and the receiving cavity 17 is used for the fixing cylinder 16 to enter; an electrode 20 is led out from the tail end of the cable 5, and the electrode 20 is connected to the wire in the cable 5, and the fixing cylinder 16 is sleeved on the tail end of the cable 5 and fixed to the tail end of the cable 5; a conductive docking sleeve 18 is provided in the receiving cavity 17, and the electrode 20 is inserted into the docking sleeve 18, and the docking sleeve 18 is connected to the power output end of the charging pile through a conductive connector 19.

[0041] A mounting tube 25 is provided on the base 15 and above the accommodating chamber 17. The mounting tube 25 is connected and fixed to the base 15. The fixing tube 16 passes through the mounting tube 25 and enters the accommodating chamber 17. A second through hole 22 is provided on the side of the mounting tube 25. A positioning hole 23 is provided on the side wall of the fixing tube 16 at a position corresponding to the second through hole 22. The electromagnet 21 is fixed on the side of the mounting tube 25. The locking shaft 24 of the electromagnet 21 passes through the second through hole 22 and enters the positioning hole 23. The control signal output end of the control module is connected to the driving end of the electromagnet 21.

[0042] A third height position is also preset in the control module, and the third height position is lower than the second height position.

[0043] In the initial state, the locking shaft 24 of the electromagnet 21 extends into the positioning hole 23 , and the fixing cylinder 16 is locked by the electromagnet 21 .

[0044] After the charging pile is put into use, when the distance sensor 14 detects that the floating block 10 reaches the third height position, the control module sends an "unlock" signal to the electromagnet 21. After the electromagnet 21 receives the "unlock" signal, its locking shaft 24 retreats, and the locking shaft 24 is separated from the positioning hole 23, thereby unlocking the fixing cylinder 16; when the fixing cylinder 16 is unlocked, if the cable 5 continues to be pulled, the electrode 20 will be separated from the docking sleeve 18, and the fixing cylinder 16 will be separated from the installation cylinder 25. At this time, the tail end of the cable 5 will be disconnected from the base 15, which plays the role of actively cutting off the cable 5; after the cable 5 is cut off, the pulling force of the car cannot be transmitted to the charging pile body 1, which plays the role of protecting the charging pile body 1. This structure can also facilitate the maintenance of the charging pile after the cable 5 is "torn off".

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A charging pile safety protection device, characterized in that: The utility model comprises a pulling detection mechanism, a control device, a circuit breaker and an alarm; the pulling detection mechanism is arranged on a side where the cable is led out of the charging pile body, the pulling detection mechanism comprises an upper support plate and a lower support plate connected and fixed to the outer shell of the charging pile body, a pair of vertical guide rods are symmetrically arranged between the upper support plate and the lower support plate, the upper end and the lower end of the guide rod are respectively connected to the upper support plate and the lower support plate, a floating block is arranged between the two groups of guide rods, a first through hole is arranged in the middle of the floating block, the cable passes through the first through hole, sliders are symmetrically fixed on both sides of the floating block, the sliders are movably sleeved on the guide rods, a spring is also sleeved on the guide rods, the upper end and the lower end of the spring are respectively in contact with the slider and the lower support plate; a distance The distance sensor is connected to the control device, and the distance sensor is used to detect the height position of the floating block and feed back the height position of the floating block to the control device; the circuit breaker is arranged inside the charging pile body and the circuit breaker is connected to the output circuit of the charging pile, and the circuit breaker is connected to the control device and controlled by the control device; the alarm is connected to the control device and controlled by the alarm device; the control device is preset with a first height position and a second height position, wherein the second height position is lower than the first height position; during the charging process or after the charging is completed, when the floating block reaches the first height position, the control device controls the alarm to emit an alarm sound, and when the position of the floating block reaches the second height position, the control device controls the circuit breaker to change from an on state to an off state.

2. The charging pile safety protection device according to claim 1 is characterized in that: The control device is also connected to the charging control host of the charging pile body. When the position of the floating block reaches the first position, the control device sends a feedback signal to the charging control host. After receiving the feedback signal, the charging control host sends a control instruction to the charging power adjustment module, thereby reducing the output power of the charging pile.

3. The charging pile safety protection device according to claim 2 is characterized in that: It also includes a disconnection mechanism, which includes a base, a fixing cylinder and an electromagnet; the base is fixed to the outer shell of the charging pile body, and a receiving cavity is provided on the base, and the receiving cavity is used for the fixing cylinder to enter; an electrode is led out from the tail end of the cable, and the electrode is connected to the wire in the cable, and the fixing cylinder is sleeved on the tail end of the cable and fixed to the tail end of the cable; a conductive docking sleeve is provided in the receiving cavity, and the electrode is inserted into the docking sleeve, and the docking sleeve is connected to the power output end of the charging pile through a conductive connector; an installation cylinder is provided on the base and above the receiving cavity, and the installation cylinder is connected and fixed to the base, and the fixing cylinder Passing through the installation tube and entering into the accommodating cavity; a second through hole is opened on the side of the installation tube, and a positioning hole is set on the side wall of the fixing tube at a position corresponding to the second through hole, the electromagnet is fixed on the side of the installation tube, and the locking shaft of the electromagnet passes through the second through hole and enters into the positioning hole, the electromagnet is connected to the control device and controlled by the control device; the control device is also preset with a third height position, the third height position is lower than the second height position, when the distance sensor detects that the floating block reaches the third height position, the control device controls the electromagnet to disengage its locking shaft from the positioning hole, thereby unlocking the fixing tube, and at this time the tail end of the cable will be disconnected from the base.

4. The charging pile safety protection device according to claim 1 is characterized in that: It also includes a communication module, which is connected to the control device; when the floating block reaches the first height position, the control module controls the communication module to send an alarm message to the operator's management personnel.

5. The charging pile safety protection device according to claim 4 is characterized in that: It also includes a camera module installed on the outer shell of the charging pile body, and the camera module is connected to the control device; when the floating block reaches the first height position, the control device controls the camera module to start shooting the video image in front of the charging pile body, and at the same time the control device controls the communication module to send the video data to the operator.

6. The charging pile safety protection device according to claim 4 is characterized in that: The communication module is a WIFI module or an IoT card communication module.

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