Electric vehicle charging pile metering performance on-line monitoring system

Abstract

The invention discloses an electric vehicle charging pile metering performance online monitoring system, which relates to the technical field of charging piles and comprises an acquisition monitoring device, a central control analysis device, an automatic alarm system, a fire extinguishing system, high-definition screen display equipment and broadcast sound equipment. The acquisition monitoring device is used for acquiring electric power data of the metering integrated charging pile terminal equipment, detecting current of a battery end to be charged and sending the data to the central control analysis device, and the central control analysis device is used for integrating the acquired data and sending an obtained analysis result to the automatic alarm system. In the process of charging the to-be-charged battery; the charging process is optimized, and the charging pile is monitored in real time, so that the use performance of the battery is protected, the phenomenon of battery overcurrent or charging equipment damage caused by overlarge initial charging current for the to-be-charged battery with overlarge discharging depth is avoided, and the use performance of the battery is protected.

Description

Technical Field

[0001] The present invention relates to the technical field of charging piles, and in particular to an online monitoring system for metering performance of an electric vehicle charging pile. Background Art

[0002] With the continuous development of social economy, environmental issues have gradually entered the public's field of vision. The use of new energy vehicles has positive significance for solving urban environmental pollution, adjusting energy consumption structure, and facilitating residents' travel. Electric vehicles have developed rapidly in recent years, and the number of supporting charging facilities has also increased exponentially. At present, the research on the reliability of charging pile data quality is still in its infancy. The factors and mechanisms affecting the quality of charging pile monitoring data are still unclear, and there are relatively few reliable evaluation methods for charging pile data quality. Charging piles are very important to cars, and therefore need to be regularly inspected. Now, an online monitoring system for the metering performance of electric vehicle charging piles is needed.

[0003] On this basis, after searching the patent website, Chinese patent announcement number CN211856842U discloses an AC charging pile power metering detection circuit;

[0004] It can be seen that there are shortcomings in the above patent application: the traditional AC charging pile energy metering and detection method lacks protection measures. During the use of new energy vehicles, there are many battery over-discharge phenomena. If the initial charging current of the discharged battery cannot be adjusted in time, the initial charging current is too large, which may cause battery overcurrent or charging equipment damage, thereby reducing the service life of the equipment.

[0005] Aiming at the above problems, an online monitoring system for the metering performance of electric vehicle charging piles is proposed. Summary of the invention

[0006] The purpose of the present invention is to provide an online monitoring system for the metering performance of an electric vehicle charging pile. The system is used to work, thereby solving the problem that the traditional AC charging pile energy metering detection method pointed out in the above background technology lacks protection measures. During the use of new energy vehicles, there are many battery over-discharge phenomena. If the initial charging current of the discharged battery cannot be adjusted in time, the battery overcurrent or charging equipment damage may occur due to the excessive initial charging current, thereby reducing the service life of the equipment.

[0007] To achieve the purpose of the present invention, the technical solution provided by the present invention is specifically as follows:

[0008] An online monitoring system for metering performance of an electric vehicle charging pile includes a data acquisition and monitoring device, a central control and analysis device, an automatic alarm system, and a fire extinguishing system, wherein the data acquisition and monitoring device, the automatic alarm system, and the fire extinguishing system are all connected to the central control and analysis device;

[0009] The collection and monitoring device is used to collect the power data of the charging pile terminal equipment with integrated metering, so as to detect the current at the end of the battery to be charged, and send the data to the central control analysis device. The central control analysis device comprehensively analyzes the collected data and sends the analysis results to the automatic alarm system; the collection and monitoring device includes a fire detector. The fire detector is a device in the fire automatic alarm system that can explore the scene and detect fire. Its function is to monitor whether there is a fire in the environment. Once there is a fire, the characteristic physical quantities of the fire, such as temperature, smoke, gas and radiation light intensity, are converted into electrical signals, and an alarm signal is immediately sent to the central control analysis device.

[0010] The central control analysis device is also used to determine whether the charging current needs to be adjusted according to the detection results of the collection and monitoring device, and determine the position of the opened adjustment resistor according to the adjusted charging current. During the charging process of the rechargeable battery, when the current at the end of the rechargeable battery detected by the collection and monitoring device does not change within a preset time, the central control analysis device determines that the charging is completed and automatically switches to the protection circuit to avoid overcharging of the rechargeable battery; the central control analysis device can be used to receive the signal of the fire detector to determine whether a fire is found around the electric vehicle charging pile. When the central control analysis device analyzes and determines that a fire has occurred in the environment, the fire signal is sent to the fire extinguishing system.

[0011] The automatic alarm system is used to determine whether the received signal exceeds the safety range, and issue a warning reminder when it is not zero, so as to alert the operator to deal with the fault of the charging pile in time;

[0012] The fire extinguishing system is used to control the fire extinguishing system to start according to the fire signal instruction sent by the central control analysis device. When a short circuit occurs in the charging pile and causes a fire hazard, fire extinguishing and emergency measures are taken in time.

[0013] It also includes a high-definition screen display device, which is used to display the relevant power data of the charging pile measured by the collection and monitoring device, so as to facilitate the operating workers to understand the situation of the charging pile.

[0014] Wherein, the acquisition and monitoring device includes a DC metering module, a temperature module, a leakage protector and a camera;

[0015] Among them, the DC metering module is used to monitor the charging current during the use of the charging pile; the temperature module includes a temperature sensor for detecting the temperature of the charging pile; the leakage protector is used to determine whether there is leakage in the charging pile and the charging pile electrical circuit by measuring the current difference. When the current difference exceeds the set threshold, it will automatically cut off the power supply to protect the safety of the human body and electrical equipment; the DC metering module has a pulse input interface.

[0016] The camera is used to record the surrounding images of the charging pile, so as to understand the real-time changing information around the car charging pile; the camera displays the comprehensive analysis results through the high-definition screen display device.

[0017] Among them, the central control analysis device includes a microcontroller, a wireless module and a control terminal; the microcontroller connection end is connected to a DC metering module, a temperature module, a leakage protector, a camera and a wireless module, and the wireless module connection end is connected to a control terminal. The wireless module is used to connect the microcontroller to the control terminal through a wireless network. The microcontroller is used to receive and analyze the information detected by the DC metering module, the temperature module, the leakage protector and the camera, convert the received information into a digital signal, and finally transmit the integrated information to the control terminal through the wireless module. The control terminal is connected to the automatic alarm system.

[0018] Wherein, the control terminal includes a computer host, the control terminal is electrically connected to the automatic alarm system, and the camera and the high-definition screen display device are electrically connected to the control terminal respectively.

[0019] Among them, the automatic alarm system includes an input module, an isolation module, a switching module, an output module and the broadcast audio equipment. The input module is connected to the control terminal, and the output module is connected to the broadcast audio equipment. The input module is used to receive signals, including receiving alarms and feedback signals from the DC metering module, the temperature module, the leakage protector and the camera equipment, and alarms according to the received signals.

[0020] The broadcast audio equipment warns the inspector of abnormalities in the metering performance of the charging pile by sounding an alarm.

[0021] Wherein, the fire extinguishing system includes a dry powder fire extinguishing system and a gas fire extinguishing system.

[0022] Among them, the gas fire extinguishing system has different fire extinguishing effects depending on the type of gas, and the actual needs of the charging pile need to be considered when selecting it.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The present invention presets a battery voltage preset value in the central control analysis device to determine whether the charging current needs to be adjusted at the initial stage of charging, thereby avoiding the phenomenon of battery overcurrent or charging equipment damage caused by excessive initial charging current for batteries to be charged with excessive discharge depth, optimizing the charging process, and thus protecting the battery performance.

[0025] 2. The present invention is provided with a collection and monitoring device, which can detect the current and temperature of the charging pile, and uses a controller to collect and analyze the detected data information, convert the information into a digital signal, and finally transmit the information to the control terminal through a wireless module, so that the control terminal can perform logical operations based on the data storage and analysis. When it is detected that the current and temperature exceed the set limit, the control alarm module will sound to remind the staff. At the same time, the staff can also observe the real-time picture around the power supply equipment at any time. The real-time data can be uploaded through the wireless module to complete the real-time identification and real-time monitoring of the car charging pile fault, thereby ensuring the safety of the charging pile operation.

[0026] 3. The present invention solves the problem of delay caused by errors in traditional manual operations, and supports online real-time monitoring. The staff can take timely countermeasures based on the abnormal warnings received to ensure the safe and normal operation of the charging pile.

[0027] 4. In the present invention, when a fire is caused by a fault in the charging pile equipment, the controller will start the fire extinguishing system. The function of the fire extinguishing system is to detect the fire in time, extinguish the fire quickly, protect the charging pile and personnel safety, reduce the incidence of fire accidents, and improve the safety of the use of electric vehicle charging pile equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The overall structure diagram of the system provided by the embodiment of the present invention;

[0029] Figure 2 It is a structural framework diagram of a data acquisition and monitoring device in an embodiment of the present invention;

[0030] Figure 3 It is a structural framework diagram of the central control analysis device in an embodiment of the present invention;

[0031] Figure 4 A structural framework diagram of a connection between a camera and a high-definition screen display device in an embodiment of the present invention;

[0032] Figure 5A structural framework diagram of a connection between a broadcast audio device and a control terminal in an embodiment of the present invention;

[0033] Figure 6 It is a structural framework diagram of the fire extinguishing system of the present invention.

[0034] In the figure: 1. Data collection and monitoring device; 11. DC metering module; 12. Temperature module; 13. Leakage protector; 14. Camera; 2. Central control analysis device; 21. Microcontroller; 22. Wireless module; 23. Control terminal; 3. Automatic alarm system; 4. Fire extinguishing system; 41. Dry powder fire extinguishing; 42. Gas fire extinguishing; 5. High-definition screen display equipment; 6. Broadcasting and audio equipment. DETAILED DESCRIPTION

[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0036] like Figure 1-6 As shown, the present embodiment provides an online monitoring system for the metering performance of an electric vehicle charging pile, including a collection and monitoring device 1, a central control and analysis device 2, an automatic alarm system 3, and a fire extinguishing system 4;

[0037] Among them, the collection and monitoring device 1 is used to collect power data of the charging pile terminal device with integrated metering, so as to detect the current at the end of the battery to be charged, and send the data to the central control analysis device 2. The central control analysis device 2 comprehensively analyzes the collected data and sends the obtained analysis results to the automatic alarm system 3. The central control analysis device 2 is connected to the collection and monitoring device 1, and determines whether it is necessary to adjust the charging current according to the detection result of the collection and monitoring device 1, and determines the position of the opened adjustment resistor according to the adjusted charging current. In the process of charging the battery to be charged, when the current at the end of the battery to be charged detected by the collection and monitoring device 1 does not change within a preset time, the central control analysis device 2 determines that the charging is completed and the automatic alarm system 3 is turned on. Switch to the protection circuit to avoid overcharging of the rechargeable battery; the automatic alarm system 3 is used to determine whether the received signal exceeds the safety range, and issue an early warning reminder when it is not zero, so as to alert the operator to deal with the fault of the charging pile in time; the acquisition monitoring device 1 includes a fire detector. The fire detector is a device in the fire automatic alarm system that can explore the scene and find fire. Its function is to monitor whether there is a fire in the environment. Once there is a fire, the characteristic physical quantities of the fire, such as temperature, smoke, gas and radiation light intensity, are converted into electrical signals, and the alarm signal is immediately sent to the central control analysis device; the central control analysis device 2 can be used to receive the signal of the fire detector to determine The central control analysis device 2 analyzes and determines whether a fire is found around the electric vehicle charging pile. When a fire occurs in the environment, the fire signal is sent to the fire extinguishing system 4. The fire extinguishing system 4 is used when a short circuit occurs in the charging pile and causes a fire hazard. According to the fire signal instruction sent by the central control analysis device 2, the central control analysis device 2 will control the fire extinguishing system 4 to start, take fire extinguishing and emergency measures in time, and reduce the damage to the power supply equipment; the acquisition and monitoring device 1 includes a DC metering module 11, a temperature module 12, a leakage protector 13 and a camera 14. The acquisition and monitoring device 1 includes a DC metering module 11, a temperature module 12, a leakage protector 13 and a camera 14. The DC metering module Block 11 is used to monitor the charging current during the use of the charging pile; the temperature module 12 includes a temperature sensor for detecting the temperature of the charging pile; the leakage protector 13 determines whether there is leakage in the charging pile and the charging pile circuit by measuring the difference in current. When the current difference exceeds the set threshold, it will automatically cut off the power supply to protect the safety of the human body and electrical equipment. The DC detection meter adopts a shunt and meter integrated structure design, which is provided with an energy register; the DC metering module 11 has a pulse input interface; the DC metering module 11 can adopt a DC energy meter with a shunt and meter separated or a shunt and meter integrated, and the meter used can be installed on the DC outlet side of the charger;The high-definition screen display device 5 is used to display the relevant power data of the charging pile collected and measured by the collection monitoring device 1, so as to facilitate the operating workers to understand the situation of the charging pile. The camera 14 is mainly used to record the surrounding images of the charging pile in order to better understand the real-time changing information around the car charging pile. The camera 14 will display the comprehensive analysis results through the high-definition screen display device 5. The central control analysis device 2 includes a microcontroller 21, a wireless module 22 and a control terminal 23; the connection end of the microcontroller 21 is connected to the DC metering module 11, the temperature module 12, the leakage protector 13, the camera 14 and the wireless module 22, the connection end of the wireless module 22 is connected to the control terminal 23, the wireless module 22 is used to connect the microcontroller 21 to the control terminal 23 through a wireless network, the control terminal 23 includes a computer host, the control terminal 23 is electrically connected to the automatic alarm system 3, the camera 14 and the high-definition screen display device 5 are electrically connected to the control terminal 23 respectively, the microcontroller 21 is used to receive and analyze the information detected by the DC metering module 11, the temperature module 12, the leakage protector 13 and the camera 14, convert the received information into a digital signal, and finally transmit the integrated information to the control terminal 23 through the wireless module 22, and the control terminal 23 is electrically connected to the automatic alarm system 3 The automatic alarm system 3 includes an input module, an isolation module, a switching module, an output module and a broadcast audio device 6. The input module is connected to the control terminal 23, and the output module is connected to the broadcast audio device 6. The input module is used to receive signals, such as receiving alarms and feedback signals from the DC metering module 11, the temperature module 12, the leakage protector 13 and the camera 14. In short, the signal is transmitted to the automatic alarm system 3. Whether the broadcast audio device 6 sends an alarm is used to remind the detection personnel that the metering performance of the charging pile has been abnormal. The fire extinguishing system 4 includes a dry powder fire extinguishing system 41 and a gas fire extinguishing system 42. It will not cause any damage to equipment and personnel during the fire extinguishing process. It is suitable for items that are easily damaged by water, such as power supply equipment. The gas fire extinguishing system 42 has different fire extinguishing effects depending on the type of gas, so it is necessary to consider the actual needs of the charging pile when selecting. ;

[0038] The optional implementation modes of the embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details in the above implementation modes. Within the technical concept of the embodiments of the present invention, various simple modifications can be made to the technical scheme of the embodiments of the present invention, and these simple modifications all belong to the protection scope of the embodiments of the present invention.

Claims

1. An online monitoring system for the metering performance of electric vehicle charging piles, It is characterized in that It comprises a data collection and monitoring device (1), a central control and analysis device (2), an automatic alarm system (3), and a fire extinguishing system (4), wherein the data collection and monitoring device (1), the automatic alarm system (3), and the fire extinguishing system (4) are all connected to the central control and analysis device (2); The acquisition and monitoring device (1) is used to collect power data of the charging pile terminal device with integrated metering, so as to detect the current at the end of the battery to be charged, and send the data to the central control and analysis device (2). The central control and analysis device (2) conducts a comprehensive analysis on the collected data and sends the obtained analysis results to the automatic alarm system (3); the acquisition and monitoring device (1) includes a fire detector, which is a device in the fire automatic alarm system that can detect the scene and detect fire. Its function is to monitor whether there is a fire in the environment. Once there is a fire, the characteristic physical quantity of the fire is converted into an electrical signal, and an alarm signal is immediately sent to the central control and analysis device (2); The central control analysis device (2) is also used to determine whether the charging current needs to be adjusted according to the detection result of the acquisition monitoring device (1), and determine the position of the adjustment resistor to be turned on according to the adjusted charging current. During the charging process of the rechargeable battery, when the current at the end of the rechargeable battery detected by the acquisition monitoring device (1) does not change within a preset time, the central control analysis device (2) determines that the charging is completed and automatically switches to the protection circuit to avoid overcharging of the rechargeable battery. The central control analysis device (2) can be used to receive the signal of the fire detector to determine whether a fire is found around the electric vehicle charging pile. When the central control analysis device (2) analyzes and determines that a fire has occurred in the environment, the fire signal is sent to the fire extinguishing system (4); The automatic alarm system (3) is used to determine whether the received signal exceeds the safety range, and to issue a warning reminder when it is not zero, so as to alert the operator to deal with the fault of the charging pile in time; The fire extinguishing system (4) is used to control the fire extinguishing system (4) to start according to the fire signal instruction sent by the central control analysis device (2). When a short circuit occurs in the charging pile and causes a fire hazard, fire extinguishing and emergency measures are taken in time.

2. According to claim 1, an online monitoring system for metering performance of electric vehicle charging piles, Features: It also includes a high-definition screen display device (5), which is used to display the relevant power data of the charging pile for measurement collected by the collection and monitoring device (1), so as to facilitate the operator to understand the situation of the charging pile.

3. According to claim 2, an online monitoring system for metering performance of electric vehicle charging piles, It is characterized in that The data collection and monitoring device (1) further comprises a DC metering module (11), a temperature module (12), a leakage protector (13) and a camera (14); The DC metering module (11) is used to monitor the charging current during the use of the charging pile; the temperature module (12) includes a temperature sensor for detecting the temperature of the charging pile; the leakage protector (13) is used to determine whether the charging pile and the charging pile circuit have leakage by measuring the current difference; when the current difference exceeds a set threshold, it will automatically cut off the power supply to protect the safety of the human body and electrical equipment; the DC metering module (11) has a pulse input interface.

4. According to claim 3, an online monitoring system for metering performance of electric vehicle charging piles, Features: The camera (14) is used to record the surrounding images of the charging pile, so as to understand the real-time changing information around the vehicle charging pile; the camera (14) displays the comprehensive analysis results through the high-definition screen display device (5).

5. According to claim 1, an online monitoring system for metering performance of electric vehicle charging piles, Features: The central control analysis device (2) comprises a microcontroller (21), a wireless module (22) and a control terminal (23); the connection end of the microcontroller (21) is connected to a DC metering module (11), a temperature module (12), a leakage protector (13), a camera (14) and a wireless module (22); the connection end of the wireless module (22) is connected to a control terminal (23); the wireless module (22) is used to connect the microcontroller (21) to the control terminal (23) via a wireless network; the microcontroller (21) is used to receive and analyze information detected by the DC metering module (11), the temperature module (12), the leakage protector (13) and the camera (14); the received information is converted into a digital signal; and finally the integrated information is transmitted to the control terminal (23) via the wireless module (22); the control terminal (23) is connected to the automatic alarm system (3).

6. An online monitoring system for metering performance of electric vehicle charging piles according to claim 5, Features: The control terminal (23) comprises a computer host, the control terminal (23) is electrically connected to the automatic alarm system (3), and the camera (14) and the high-definition screen display device (5) are electrically connected to the control terminal (23) respectively.

7. An online monitoring system for metering performance of electric vehicle charging piles according to claim 6, Features: The automatic alarm system (3) comprises an input module, an isolation module, a switching module, an output module and the broadcast audio equipment (6), wherein the input module is connected to the control terminal (23), the output module is connected to the broadcast audio equipment (6), and the input module is used to receive signals, including receiving alarms and feedback signals from the DC metering module (11), the temperature module (12), the leakage protector (13) and the camera (14), and to generate an alarm based on the received signals.

8. An online monitoring system for metering performance of electric vehicle charging piles according to claim 7, Features: The broadcast audio device (6) alerts the inspector that an abnormality has occurred in the metering performance of the charging pile by emitting an alarm.

9. An online monitoring system for metering performance of electric vehicle charging piles according to claim 8, Features: The fire extinguishing system (4) comprises a dry powder fire extinguishing system (41) and a gas fire extinguishing system (42).

10. An online monitoring system for metering performance of electric vehicle charging piles according to claim 9, Features: The gas fire extinguishing system (42) has different fire extinguishing effects depending on the type of gas, and the actual needs of the charging pile need to be considered when selecting it.

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