Charging station power utilization safety monitoring device and monitoring method

Abstract

The invention relates to the technical field of charging stations, in particular to an electrical safety monitoring device and method for a charging station, and the device comprises a mounting box fixed at the top of a charging pile, and also comprises an isolation cover which is stored in the mounting box, and the top of the isolation cover is fixedly connected with the top of the interior of the mounting box; the bottom plate is fixed at the bottom of the charging pile; the rubber strip is connected with the bottom of the mounting box through a positioning mechanism, and the positioning mechanism is further used for connecting the rubber strip with the bottom plate after the rubber strip falls down; the protection device is used for controlling to remove potential safety hazards in the charging pile when the detection sensor detects the potential safety hazards in the charging pile so as to perform safety protection on the charging pile; according to the device, through the arrangement of the protection device, fire spreading can be restrained through rapid cooling, so that the effects of restraining and delaying the fire and even extinguishing the fire on the charging pile are achieved, and safety monitoring and protection on the charging pile are facilitated.

Description

Technical Field

[0001] The present invention relates to the field of charging stations, and in particular to a charging station electricity safety monitoring device and a monitoring method. Background Art

[0002] Charging stations are places that use the whole vehicle charging mode to provide electric energy for electric vehicles. Their sizes vary, from a small one with only a few charging piles to a large one with dozens or even hundreds of charging piles. The construction of charging stations needs to consider power supply, site planning, equipment configuration, safety protection and other aspects to meet the needs of different users and improve the convenience and popularity of electric vehicles.

[0003] Since the charging station includes multiple charging piles, when one of the charging piles is damaged and catches fire, it will interfere with the surrounding charging piles and even cause the fire to spread, causing multiple charging piles to catch fire and be damaged one after another. On the one hand, it will increase safety hazards and on the other hand, it will increase economic losses. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a charging station electricity safety monitoring device and monitoring method.

[0005] In a first aspect, the present invention provides a charging station power safety monitoring device, including a mounting box fixed on the top of a charging pile, and also including:

[0006] An isolation cover is stored inside the installation box, and the top of the isolation cover is fixedly connected to the inner top of the installation box;

[0007] A bottom plate, fixed to the bottom of the charging pile;

[0008] A rubber strip is fixed to the bottom of the isolation cover, the rubber strip is connected to the bottom of the installation box via a positioning mechanism, and the positioning mechanism is also used to connect the rubber strip to the bottom plate after the rubber strip falls;

[0009] A detection sensor is installed inside the charging pile to detect the inside of the charging pile to identify hidden dangers of electricity use inside the charging pile;

[0010] A protection device, used for controlling the removal of the potential safety hazard inside the charging pile when the detection sensor detects a potential safety hazard inside the charging pile, so as to provide safety protection for the charging pile;

[0011] The detection sensor detects the internal state of the charging pile. When a potential safety hazard is detected inside the charging pile, the positioning mechanism is controlled to start. After the positioning mechanism is started, the connection between the rubber strip and the installation box is first controlled to be released, so that the rubber strip falls under the action of gravity. During the falling process of the rubber strip, the isolation cover is driven to unfold. The isolation cover is a multi-layer structure with soft and fireproof and airtight characteristics. Specifically, the inner layer of the isolation cover is a fireproof canvas, and the outer layer is coated with a fireproof sealant to form a seal or the outer layer is fixed with a sealing film cloth to form a seal, so that after the isolation cover falls and unfolds, it seals and wraps the charging pile, and wraps the fire that may be generated inside the charging pile, so that the inside of the charging pile can be in an independent space when a fire occurs, which is conducive to avoiding the spread of fire. Then the positioning mechanism seals and connects the bottom of the rubber strip with the bottom plate, so that the inside of the isolation cover forms a closed space, and the rubber strip, the bottom plate and the installation box are all made of fireproof materials to avoid burning in a short time under the condition of fire, which is conducive to preventing the spread of fire.

[0012] Subsequently, the control protection device is started, and the protection device transports low-temperature inert gas, such as low-temperature nitrogen, to the interior of the isolation cover. On the one hand, after the nitrogen fills the interior of the isolation cover, the oxygen content of the air inside the isolation cover is diluted, and the original air can be discharged through the nitrogen, so that the oxygen content inside the isolation cover is insufficient, thereby achieving a flame retardant effect. On the other hand, the temperature of the low-temperature nitrogen is extremely low. When the low-temperature nitrogen enters the interior of the isolation cover, it quickly exchanges heat with the original air inside the isolation cover, so that the temperature inside the isolation cover is reduced, thereby making the temperature of the isolation cover lower than the combustion temperature. Therefore, when the high temperature inside the charging pile is about to cause a fire or when the fire has just started and there is no large-scale open flame, the spread of the fire can be suppressed by rapid cooling, which is beneficial to suppress and delay the fire or even extinguish the fire on the charging pile, thereby facilitating the safe monitoring and protection of the charging pile.

[0013] Preferably, the positioning mechanism comprises:

[0014] A first magnetic strip, fixed to the bottom of the rubber strip;

[0015] A second magnetic strip is fixed on the top of the bottom plate, and after the first magnetic strip falls, the first magnetic strip and the second magnetic strip have opposite magnetic poles that are attracted to each other;

[0016] An electromagnet, fixed to the bottom of the installation box, for generating magnetism to magnetically adsorb the first magnetic strip when powered on;

[0017] When the electromagnet is powered on, it generates magnetic attraction with the first magnetic strip, so that the first magnetic strip is positioned and connected with the installation box. After the electromagnet is powered off, the first magnetic strip can fall under the action of gravity to drive the isolation cover to unfold. When the isolation cover is fully unfolded, the first magnetic strip at the bottom of the isolation cover is close to the second magnetic strip and is magnetically attracted to the second magnetic strip, thereby driving the second magnetic strip to face the first magnetic strip, so that the bottom of the isolation cover reaches the specified position after it falls.

[0018] Preferably, the positioning mechanism further comprises:

[0019] A first sealing strip, fixed to the top of the bottom plate;

[0020] a second sealing strip, fixed to the bottom of the first magnetic strip;

[0021] A bracket, mounted on the edge of the bottom plate through a driving member, the driving member is used to drive the bracket to move and give way;

[0022] A roller, rotatably mounted on the side wall of the bracket, and used to move along the track of the second sealing strip after squeezing the top of the second sealing strip;

[0023] The driving member can drive the bracket to move and drive the bracket to make way. When the isolation cover falls, the bracket makes way for the falling of the isolation cover. After the isolation cover has completely fallen, the bracket is reset. Then the driving member drives the bracket to move along the edge of the bottom plate, thereby driving the roller to roll along the edge of the bottom plate. The bottom of the roller squeezes the second sealing strip, so that at the position where the roller passes, the second sealing strip is squeezed and plugged with the first sealing strip to form a complete seal, so that the edge of the isolation cover is sealed after it falls, which is beneficial to avoid overflow during nitrogen filling and cause a decrease in oxygen content in the charging station environment.

[0024] Preferably, the driving member comprises:

[0025] A slide rail fixed to the edge of the bottom plate;

[0026] A base, slidably mounted on the slide rail, and used to drive the bracket to move;

[0027] A motor is fixed to one side of the base, and a gear is fixed to the output shaft of the motor;

[0028] A rack is fixed to the edge of the bottom plate, and the gear is meshed with the rack;

[0029] After the motor is started, the output shaft drives the gear connected to it to rotate. After the gear rotates, it rolls under the meshing action of the rack, thereby driving the motor and the base to roll synchronously, thereby driving the base to move. The base is slidably installed on the slide rail, thereby limiting the trajectory of the base, so that the base moves along the edge of the bottom plate under the drive action.

[0030] Preferably, the driving member further comprises:

[0031] An electric push rod is fixed inside the base and is arranged in an inclined manner;

[0032] The top of the base and the bottom of the bracket are both arranged as inclined surfaces, and the inclined surfaces are directly in contact with each other, and the electric push rod is used to push the bracket to move in a direction perpendicular to the inclined surface;

[0033] After the electric push rod is started, it can push the bracket diagonally upward, thereby driving the bracket and the roller to move diagonally upward. On the one hand, after the roller moves diagonally upward, it can make way for the falling of the isolation cover. On the other hand, the resetting process after the roller moves diagonally upward can press down the second sealing strip, so that the second sealing strip and the first sealing strip are squeezed and plugged at the initial position after the roller is reset.

[0034] Preferably, the detection sensor comprises:

[0035] A temperature sensor is installed inside the charging pile to detect the temperature inside the charging pile;

[0036] The smoke sensor is installed inside the charging pile and is used to warn when smoke is generated inside the charging pile;

[0037] The temperature sensor can detect the temperature inside the charging pile and issue an alarm when it detects that the temperature inside the charging pile exceeds the fire safety threshold. The smoke sensor can identify when smoke is generated inside the charging pile, and thus determine that there is a fire when there is smoke inside the charging pile, and issue an alarm, thereby identifying and judging the safety of electricity use inside the charging pile.

[0038] Preferably, the protection device comprises:

[0039] An air filling box, fixed to the bottom of the base plate;

[0040] An inner cavity is opened inside the bottom plate, and the inner cavity is connected to the inflation box;

[0041] A first porous plate is embedded through the top of the bottom plate;

[0042] A second porous plate is embedded through the bottom of the bottom plate;

[0043] Intelligent mobile vehicle, which moves automatically through the control of the controller;

[0044] A liquid nitrogen cylinder is fixed on the top of the intelligent mobile vehicle;

[0045] A first plug interface is fixedly mounted on the end of the gas filling box, and the liquid nitrogen cylinder is used to transport nitrogen to the gas filling box through the first plug interface;

[0046] The smart mobile vehicle is an existing mobile vehicle that can be moved by automatic control. The detection sensor issues an alarm when detecting a fire hazard inside the charging pile, and sends the location information of the charging pile where the fire hazard occurs to the smart mobile vehicle. The smart mobile vehicle can move according to the received location information, thereby moving to the charging pile, and inputting low-temperature nitrogen into the interior of the inflation box through the first plug interface. The low-temperature nitrogen flows along the inflation box to the inner cavity, the first porous plate, and the second porous plate in sequence, thereby filling the isolation cover and the interior of the charging pile, thereby suppressing the existing fire hazard through the low-temperature nitrogen.

[0047] Preferably, the protection device further comprises:

[0048] A second plug interface is fixedly connected to the side wall of the liquid nitrogen cylinder and is plugged and adapted to the first plug interface;

[0049] A flow control valve installed inside the second plug interface, used to control the nitrogen filling flow;

[0050] A flow rate detector, installed inside the second plug interface, for detecting the nitrogen flow rate;

[0051] After the second plug interface is plugged into the first plug interface, the liquid nitrogen cylinder and the liquid nitrogen cylinder are connected, and then the flow control valve is controlled to open to control the injection speed of the low-temperature nitrogen, which is beneficial to avoid the situation where the internal equipment of the charging pile is damaged due to excessive injection speed. The flow rate detector can detect the flow of the low-temperature nitrogen, and thus control the flow control valve to increase the opening amount when the flow decreases to speed up the injection of nitrogen, thereby controlling the injection of nitrogen and protecting the charging pile safely through nitrogen within a safe range.

[0052] Preferably, the protection device further comprises:

[0053] An exhaust pipe, fixedly connected to the top of the installation box;

[0054] A horizontal pipe, fixedly connected to the top of the exhaust pipe;

[0055] A solenoid valve is fixed inside the exhaust pipe;

[0056] A driving fan is fixed inside the transverse tube;

[0057] During the nitrogen filling process, the solenoid valve is opened so that the air inside the isolation cover can be gradually pushed upward and discharged during the nitrogen filling process. Moreover, after suppressing the fire, after detecting that the charging pile is in a safe state, or when the rescue personnel arrive and need to inspect the charging pile, the solenoid valve is opened so that the nitrogen can be discharged from the exhaust pipe, so that the nitrogen is discharged continuously in a small amount. The discharged nitrogen flows rapidly under the airflow driving action of the driving fan, which is conducive to avoiding the situation where the nitrogen accumulates inside the local space, causing the oxygen content in the local space to decrease and causing safety hazards.

[0058] When exhausting nitrogen, air can be filled in through the first plug port, so that the nitrogen can flow upward through the flow of air and be fully exhausted from the exhaust pipe.

[0059] In a second aspect, the present invention provides a method for monitoring the safety of electricity use in a charging station, wherein a control unit is installed inside the installation box, and the monitoring method comprises the following steps:

[0060] Step 1, the control unit obtains warning information generated by the detection sensor when a safety hazard is detected inside the charging pile;

[0061] Step 2, the control unit generates protection information according to the warning information, the protection information includes sealing control information and inflation control information, the sealing control information is used to control the positioning mechanism to release the positioning of the rubber strip and the installation box, and to seal the rubber strip and the bottom plate, and the inflation control information is used to control the activation of the protection device;

[0062] Step three: the control unit sends the sealing control information to the positioning mechanism, and the control unit sends the inflation control information to the protection device.

[0063] Compared with the prior art, the present invention has the following beneficial effects:

[0064] The present invention can suppress the spread of fire by quickly cooling down the temperature through the provision of a protective device, thereby facilitating the suppression and delay of fire or even extinguishing fire on the charging pile, thereby facilitating safety monitoring and protection of the charging pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0066] Figure 2 The structure of the present invention after the overall section is schematically shown. Figure 1 .

[0067] Figure 3 For the present invention Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0068] Figure 4 For the present invention Figure 2 Schematic diagram of the enlarged structure at point B in the middle.

[0069] Figure 5 For the present invention Figure 2 Schematic diagram of the enlarged structure at point C in the middle.

[0070] Figure 6 The structure of the present invention after full section is schematically shown Figure 2 .

[0071] Figure 7 It is a structural schematic diagram of the base plate of the present invention.

[0072] Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure at D in the middle.

[0073] Fig. 9 It is a schematic diagram of the method flow structure of the present invention.

[0074] In the figure: 1. Charging pile; 2. Installation box; 201. Isolation cover; 202. Bottom plate; 203. Rubber strip; 301. First magnetic strip; 302. Second magnetic strip; 4. First sealing strip; 401. Second sealing strip; 402. Roller; 403. Bracket; 5. Base; 501. Electric push rod; 6. Motor; 601. Gear; 602. Rack; 603. Slide rail; 7. Inflatable box; 701. Inner cavity; 702. First porous plate; 703. Second porous plate; 704. Smart mobile vehicle; 705. Liquid nitrogen cylinder; 706. First plug interface; 707. Second plug interface; 8. Exhaust pipe; 801. Cross pipe; 802. Solenoid valve; 803. Drive fan. DETAILED DESCRIPTION

[0075] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0076] like Figures 1 to 8 The charging station power safety monitoring device shown includes a mounting box 2 fixed on the top of the charging pile 1, and also includes:

[0077] The isolation cover 201 is stored inside the installation box 2, and the top of the isolation cover 201 is fixedly connected to the top of the inside of the installation box 2;

[0078] The bottom plate 202 is fixed to the bottom of the charging pile 1;

[0079] The rubber strip 203 is fixed to the bottom of the isolation cover 201. The rubber strip 203 is connected to the bottom of the installation box 2 through a positioning mechanism. The positioning mechanism is also used to connect the rubber strip 203 to the bottom plate 202 after it falls.

[0080] A detection sensor is installed inside the charging pile 1 and is used to detect the inside of the charging pile 1 to identify hidden dangers of electricity use inside the charging pile 1;

[0081] A protection device, used for controlling the removal of the potential safety hazard inside the charging pile 1 when the detection sensor detects a potential safety hazard inside the charging pile 1, so as to provide safety protection for the charging pile 1;

[0082] Since a charging station includes multiple charging piles, when one of the charging piles is damaged and catches fire, it will interfere with the surrounding charging piles, and even cause the fire to spread, causing multiple charging piles to catch fire and be damaged one after another, which will increase safety hazards on the one hand and economic losses on the other.

[0083] This embodiment of the present invention can solve the above problems. The specific implementation method is as follows: the detection sensor detects the internal state of the charging pile 1. When a safety hazard is detected inside the charging pile 1, the positioning mechanism is controlled to start. After the positioning mechanism is started, the connection between the rubber strip 203 and the installation box 2 is first controlled to be released, so that the rubber strip 203 falls under the action of gravity. During the falling process of the rubber strip 203, the isolation cover 201 is driven to unfold. The isolation cover 201 is a multi-layer structure with soft and fireproof and airtight characteristics. Specifically, the inner layer of the isolation cover 201 is a fireproof canvas, and the outer layer is coated with a fireproof sealant to form a seal or The outer layer is fixed with a sealing film cloth to form a seal, so that after the isolation cover 201 falls and unfolds, it can seal and wrap the charging pile 1, and wrap the fire that may be generated inside the charging pile 1, so that the inside of the charging pile 1 can be in an independent space when a fire occurs, which is conducive to preventing the spread of fire. Then, the positioning mechanism seals and connects the bottom of the rubber strip 203 with the bottom plate 202, so that the inside of the isolation cover 201 forms a closed space, and the rubber strip 203, the bottom plate 202, and the installation box 2 are all made of fireproof materials to avoid burning in a short time in the case of fire, which is conducive to preventing the spread of fire;

[0084] Then the protection device is controlled to start, and the protection device transports low-temperature inert gas, such as low-temperature nitrogen, to the interior of the isolation cover 201. On the one hand, after the nitrogen fills the interior of the isolation cover 201, the oxygen content of the air inside the isolation cover 201 is diluted, and the original air can be discharged through the nitrogen, so that the oxygen content inside the isolation cover 201 is insufficient, thereby achieving a flame retardant effect. On the other hand, the temperature of the low-temperature nitrogen is extremely low. When the low-temperature nitrogen enters the interior of the isolation cover 201, it quickly exchanges heat with the original air inside the isolation cover 201, so that the temperature inside the isolation cover 201 is reduced, so that the temperature of the isolation cover 201 is lower than the combustion temperature, so that when the high temperature inside the charging pile 1 is about to cause a fire or when the fire has just started and there is no large-scale open flame, the spread of the fire can be suppressed by rapid cooling, which is beneficial to suppress and delay the fire or even extinguish the fire on the charging pile 1, so as to facilitate safety monitoring and protection of the charging pile 1;

[0085] The power supply inside the device can be battery powered or power line powered, and the selection is made according to actual practical needs.

[0086] As an optional embodiment, the positioning mechanism includes:

[0087] The first magnetic strip 301 is fixed to the bottom of the rubber strip 203;

[0088] The second magnetic strip 302 is fixed on the top of the bottom plate 202. After the first magnetic strip 301 falls, the first magnetic strip 301 and the second magnetic strip 302 have opposite magnetic poles that attract each other.

[0089] The electromagnet is fixed to the bottom of the installation box 2 and is used to generate magnetism to magnetically attract the first magnetic strip 301 when powered on;

[0090] When the electromagnet is powered on, it generates magnetic attraction with the first magnetic strip 301, so that the first magnetic strip 301 is positioned and connected with the installation box 2. After the electromagnet is powered off, the first magnetic strip 301 can fall under the action of gravity to drive the isolation cover 201 to unfold. When the isolation cover 201 is fully unfolded, the first magnetic strip 301 at the bottom of the isolation cover 201 is close to the second magnetic strip 302, and is magnetically attracted to the second magnetic strip 302, thereby driving the second magnetic strip 302 to face the first magnetic strip 301, so that the bottom of the isolation cover 201 reaches the specified position after it falls.

[0091] As an optional embodiment, the positioning mechanism further includes:

[0092] A first sealing strip 4 is fixed to the top of the bottom plate 202;

[0093] The second sealing strip 401 is fixed to the bottom of the first magnetic strip 301;

[0094] The bracket 403 is mounted on the edge of the bottom plate 202 through a driving member, and the driving member is used to drive the bracket 403 to move and give way;

[0095] The roller 402 is rotatably mounted on the side wall of the bracket 403 and is used to move along the track of the second sealing strip 401 after squeezing the top of the second sealing strip 401;

[0096] The driving member can drive the bracket 403 to move and drive the bracket 403 to make way. When the isolation cover 201 falls, the bracket 403 makes way for the falling of the isolation cover 201. After the isolation cover 201 has completely fallen, the bracket 403 is reset, and then the driving member drives the bracket 403 to move along the edge of the bottom plate 202, thereby driving the roller 402 to roll along the edge of the bottom plate 202. The bottom of the roller 402 squeezes the second sealing strip 401, so that at the position where the roller 402 passes, the second sealing strip 401 is squeezed and plugged with the first sealing strip 4 to form a complete seal, so that the edge of the isolation cover 201 is sealed after it falls, which is beneficial to avoid overflow during nitrogen filling and cause a decrease in oxygen content in the charging station environment.

[0097] As an optional embodiment, the driving member includes:

[0098] The slide rail 603 is fixed to the edge of the bottom plate 202;

[0099] The base 5 is slidably mounted on the slide rail 603 and is used to drive the bracket 403 to move;

[0100] The motor 6 is fixed to one side of the base 5, and the output shaft of the motor 6 is fixed with a gear 601;

[0101] The rack 602 is fixed to the edge of the bottom plate 202, and the gear 601 is meshed with the rack 602;

[0102] After the motor 6 is started, the output shaft drives the gear 601 connected to it to rotate. After the gear 601 rotates, it rolls under the meshing action of the rack 602, thereby driving the motor 6 and the base 5 to roll synchronously, thereby driving the base 5 to move. The base 5 is slidably installed on the slide rail 603, thereby limiting the trajectory of the base 5, so that the base 5 moves along the edge of the bottom plate 202 under the driving action.

[0103] As an optional embodiment, the driving member further includes:

[0104] The electric push rod 501 is fixed inside the base 5 and is arranged in an inclined manner;

[0105] The top of the base 5 and the bottom of the bracket 403 are both set as inclined surfaces, and the inclined surfaces are directly in contact with each other. The electric push rod 501 is used to push the bracket 403 to move in a direction perpendicular to the inclined surface;

[0106] After the electric push rod 501 is started, it can push the bracket 403 diagonally upward, thereby driving the bracket 403 and the roller 402 to move diagonally upward. On the one hand, after the roller 402 moves diagonally upward, it can make way for the isolation cover 201 to fall. On the other hand, the resetting process after the roller 402 moves diagonally upward can press down the second sealing strip 401, so that the second sealing strip 401 and the first sealing strip 4 are squeezed and plugged at the initial position after the roller 402 is reset.

[0107] As an optional embodiment, the detection sensor includes:

[0108] A temperature sensor is installed inside the charging pile 1 and is used to detect the temperature inside the charging pile 1;

[0109] A smoke sensor is installed inside the charging pile 1 and is used to warn when smoke is generated inside the charging pile 1;

[0110] The temperature sensor can detect the temperature inside the charging pile 1 and issue a warning when it detects that the temperature inside the charging pile 1 exceeds the fire safety threshold. The smoke sensor can identify when smoke is generated inside the charging pile 1, and thus determine that there is a fire when there is smoke inside the charging pile 1, and issue a warning, thereby identifying and judging the safety of electricity consumption inside the charging pile 1.

[0111] As an optional embodiment, the protection device includes:

[0112] The air filling box 7 is fixed to the bottom of the bottom plate 202;

[0113] The inner cavity 701 is opened inside the bottom plate 202, and the inner cavity 701 is connected to the inflation box 7;

[0114] A first porous plate 702 is embedded through the top of the bottom plate 202;

[0115] The second porous plate 703 is embedded through the bottom of the bottom plate 202;

[0116] The intelligent mobile vehicle 704 is controlled by a controller to move automatically;

[0117] Liquid nitrogen cylinder 705, fixed on the top of intelligent mobile vehicle 704;

[0118] The first plug port 706 is fixedly mounted on the end of the gas filling box 7, and the liquid nitrogen cylinder 705 is used to deliver nitrogen to the gas filling box 7 through the first plug port 706;

[0119] The smart mobile vehicle 704 is an existing mobile vehicle that can be moved by automatic control. The detection sensor issues an alarm when detecting a fire hazard inside the charging pile 1, and sends the location information of the charging pile 1 where the fire hazard occurs to the smart mobile vehicle 704. The smart mobile vehicle 704 can move according to the received location information, thereby moving to the charging pile 1, and inputting low-temperature nitrogen into the interior of the inflation box 7 through the first plug interface 706. The low-temperature nitrogen flows along the inflation box 7 to the inner cavity 701, the first porous plate 702, and the second porous plate 703 in sequence, thereby filling the isolation cover 201 and the interior of the charging pile 1, thereby suppressing the existing fire hazard through the low-temperature nitrogen.

[0120] As an optional embodiment, the protection device further includes:

[0121] The second plug interface 707 is fixedly connected to the side wall of the liquid nitrogen cylinder 705 and is plugged and adapted to the first plug interface 706;

[0122] A flow control valve, installed inside the second plug port 707, for controlling the nitrogen filling flow;

[0123] A flow rate detector, installed inside the second plug interface 707, for detecting the nitrogen flow rate;

[0124] After the second plug interface 707 is plugged into the first plug interface 706, the liquid nitrogen cylinder 705 and the liquid nitrogen cylinder 705 are connected. Then, the flow control valve is controlled to open to control the injection speed of the low-temperature nitrogen, which helps to avoid the situation where the internal equipment of the charging pile 1 is damaged due to the injection speed being too fast. The flow rate detector can detect the flow of the low-temperature nitrogen, and thus control the flow control valve to increase the opening amount when the flow decreases to speed up the injection of nitrogen, thereby controlling the injection of nitrogen and protecting the charging pile 1 safely through nitrogen within a safe range.

[0125] As an optional embodiment, the protection device further includes:

[0126] An exhaust pipe 8 is fixedly connected to the top of the installation box 2;

[0127] The horizontal pipe 801 is fixedly connected to the top of the exhaust pipe 8;

[0128] The solenoid valve 802 is fixed inside the exhaust pipe 8;

[0129] The driving fan 803 is fixed inside the horizontal pipe 801;

[0130] During the nitrogen filling process, the solenoid valve 802 is opened so that the air inside the isolation cover 201 can be gradually pushed upward and discharged during the nitrogen filling process. Moreover, after suppressing the fire, after detecting that the charging pile 1 is in a safe state, or when the rescue personnel arrive and need to inspect the charging pile 1, the solenoid valve 802 is opened so that the nitrogen can be discharged from the exhaust pipe 8, so that the nitrogen is continuously discharged in small amounts, and the discharged nitrogen flows rapidly under the airflow driving action of the driving fan 803, thereby helping to avoid the accumulation of nitrogen in the local space, causing the oxygen content in the local space to decrease and causing safety hazards;

[0131] When exhausting nitrogen, air can be filled in through the first plug port 706 , so that the nitrogen can flow upward through the flow of air and be fully exhausted from the exhaust pipe 8 .

[0132] like Fig. 9 A charging station power safety monitoring method is shown, a control unit is installed inside the installation box 2, and the monitoring method includes the following steps:

[0133] Step 1: The control unit obtains warning information generated by the detection sensor when a potential safety hazard is detected inside the charging pile 1;

[0134] Step 2: The control unit generates protection information according to the warning information, and the protection information includes sealing control information and inflation control information. The sealing control information is used to control the positioning mechanism to release the positioning of the rubber strip 203 and the installation box 2, and to seal the rubber strip 203 and the bottom plate 202. The inflation control information is used to control the activation of the protection device;

[0135] Step 3: The control unit sends the sealing control information to the positioning mechanism, and the control unit sends the inflation control information to the protection device.

[0136] Working principle of the present invention: The detection sensor detects the internal state of the charging pile 1. When a potential safety hazard is detected inside the charging pile 1, the positioning mechanism is controlled to start. After the positioning mechanism is started, the connection between the rubber strip 203 and the installation box 2 is first controlled to be released, so that the rubber strip 203 falls under the action of gravity. During the falling process of the rubber strip 203, the isolation cover 201 is driven to unfold. The isolation cover 201 is a multi-layer structure with soft, fireproof and airtight characteristics. Specifically, the inner layer of the isolation cover 201 is a fireproof canvas, and the outer layer is coated with a fireproof sealant to form a seal or the outer layer is fixed with a sealing film cloth A seal is formed, so that after the isolation cover 201 falls and unfolds, it seals and wraps the charging pile 1, and wraps the fire that may be generated inside the charging pile 1, so that the inside of the charging pile 1 can be in an independent space when a fire occurs, which is conducive to preventing the spread of the fire. Then, the positioning mechanism seals and connects the bottom of the rubber strip 203 with the bottom plate 202, so that a closed space is formed inside the isolation cover 201, and the rubber strip 203, the bottom plate 202, and the installation box 2 are all made of fireproof materials to avoid burning in a short time in the event of a fire, which is conducive to preventing the spread of the fire;

[0137] Subsequently, the protection device is controlled to start, and the protection device transports a low-temperature inert gas, such as low-temperature nitrogen, to the interior of the isolation cover 201. On the one hand, after the nitrogen fills the interior of the isolation cover 201, the oxygen content of the air inside the isolation cover 201 is diluted, and the original air can be discharged through the nitrogen, so that the oxygen content inside the isolation cover 201 is insufficient, thereby achieving a flame retardant effect. On the other hand, the temperature of the low-temperature nitrogen is extremely low. When the low-temperature nitrogen enters the interior of the isolation cover 201, it quickly exchanges heat with the original air inside the isolation cover 201, so that the temperature inside the isolation cover 201 is reduced, thereby making the temperature of the isolation cover 201 lower than the combustion temperature, so that when the high temperature inside the charging pile 1 is about to cause a fire or when the fire has just started and there is no large-scale open flame, the spread of the fire can be suppressed by rapid cooling, which is beneficial to suppress and delay the fire or even extinguish the fire on the charging pile 1, thereby facilitating the safety monitoring and protection of the charging pile 1.

[0138] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A charging station electricity safety monitoring device, comprising a mounting box (2) fixed on the top of a charging pile (1), characterized in that: Also includes: An isolation cover (201) is stored inside the installation box (2), and the top of the isolation cover (201) is fixedly connected to the top of the interior of the installation box (2); A bottom plate (202) fixed to the bottom of the charging pile (1); A rubber strip (203) is fixed to the bottom of the isolation cover (201), the rubber strip (203) and the bottom of the installation box (2) are connected via a positioning mechanism, and the positioning mechanism is also used to connect the rubber strip (203) to the bottom plate (202) after the rubber strip (203) falls down; A detection sensor is installed inside the charging pile (1) and is used to detect the inside of the charging pile (1) to identify hidden dangers of electricity use inside the charging pile (1); The protection device is used to control the removal of the potential safety hazard inside the charging pile (1) when the detection sensor detects a potential safety hazard inside the charging pile (1), so as to provide safety protection for the charging pile (1).

2. The charging station power safety monitoring device according to claim 1, characterized in that: The positioning mechanism comprises: A first magnetic strip (301) fixed to the bottom of the rubber strip (203); The second magnetic strip (302) is fixed on the top of the bottom plate (202), and after the first magnetic strip (301) falls, the first magnetic strip (301) and the second magnetic strip (302) have opposite magnetic poles that attract each other; The electromagnet is fixed to the bottom of the installation box (2) and is used to generate magnetism to magnetically attract the first magnetic strip (301) when power is turned on.

3. The charging station power safety monitoring device according to claim 2, characterized in that: The positioning mechanism also includes: A first sealing strip (4) fixed to the top of the bottom plate (202); A second sealing strip (401), fixed to the bottom of the first magnetic strip (301); A bracket (403) is mounted on the edge of the bottom plate (202) via a driving member, wherein the driving member is used to drive the bracket (403) to move and give way; The roller (402) is rotatably mounted on the side wall of the bracket (403) and is used to move along the track of the second sealing strip (401) after squeezing the top of the second sealing strip (401).

4. The charging station power safety monitoring device according to claim 3, characterized in that: The driving member comprises: A slide rail (603) fixed to the edge of the bottom plate (202); A base (5) is slidably mounted on the slide rail (603) and is used to drive the bracket (403) to move; A motor (6) is fixed to one side of the base (5), and a gear (601) is fixed to an output shaft of the motor (6); The rack (602) is fixed to the edge of the bottom plate (202), and the gear (601) is meshed with the rack (602).

5. The device for monitoring the safety of electricity use in a charging station according to claim 4, characterized in that: The driving member also includes: An electric push rod (501) is fixed inside the base (5) and is arranged in an inclined manner; The top of the base (5) and the bottom of the bracket (403) are both arranged as inclined surfaces, and the inclined surfaces are directly in contact with each other, and the electric push rod (501) is used to push the bracket (403) to move in a direction perpendicular to the inclined surface.

6. The device for monitoring the power safety of a charging station according to claim 1, characterized in that: The detection sensor comprises: A temperature sensor is installed inside the charging pile (1) and is used to detect the temperature inside the charging pile (1); A smoke sensor is installed inside the charging pile (1) and is used to issue an alarm when smoke is generated inside the charging pile (1).

7. The charging station power safety monitoring device according to claim 1, characterized in that: The protection device comprises: An air filling box (7) fixed to the bottom of the bottom plate (202); An inner cavity (701) is provided inside the bottom plate (202), and the inner cavity (701) is connected to the inflation box (7); A first porous plate (702) is embedded through the top of the bottom plate (202); A second porous plate (703) is embedded through the bottom of the bottom plate (202); An intelligent mobile vehicle (704) is controlled by a controller to move automatically; A liquid nitrogen cylinder (705) is fixed on the top of the intelligent mobile vehicle (704); The first plug interface (706) is fixedly mounted on the end of the gas filling box (7), and the liquid nitrogen cylinder (705) is used to transport nitrogen to the gas filling box (7) through the first plug interface (706).

8. The device for monitoring the safety of electricity use in a charging station according to claim 7, characterized in that: The protection device also includes: A second plug interface (707) is fixedly connected to the side wall of the liquid nitrogen cylinder (705) and is plugged and adapted to the first plug interface (706); A flow control valve installed inside the second plug port (707) to control the nitrogen filling flow rate; A flow rate detector is installed inside the second plug interface (707) and is used to detect the nitrogen flow rate.

9. The device for monitoring the power safety of a charging station according to claim 8, characterized in that: The protection device also includes: An exhaust pipe (8) fixedly connected to the top of the installation box (2); A transverse pipe (801) fixedly connected to the top of the exhaust pipe (8); A solenoid valve (802) is fixed inside the exhaust pipe (8); The driving fan (803) is fixed inside the transverse tube (801).

10. A method for monitoring the safety of electricity use in a charging station, applicable to a device for monitoring the safety of electricity use in a charging station as claimed in any one of claims 1 to 9, characterized in that: A control unit is installed inside the installation box (2), and the monitoring method comprises the following steps: Step 1: the control unit obtains warning information generated by the detection sensor when the detection sensor detects that there is a safety hazard inside the charging pile (1); Step 2: the control unit generates protection information according to the warning information, the protection information comprising sealing control information and inflation control information, the sealing control information is used to control the positioning mechanism to release the positioning of the rubber strip (203) and the installation box (2), and to seal the rubber strip (203) and the bottom plate (202), and the inflation control information is used to control the activation of the protection device; Step three: the control unit sends the sealing control information to the positioning mechanism, and the control unit sends the inflation control information to the protection device.

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