A 5G charging pile intelligent operation and maintenance system and method

Abstract

The present invention discloses a 5G charging pile intelligent operation and maintenance system and method, wherein the system includes a plurality of charging piles, the charging piles are electrically connected to a first power supply circuit and a second power supply circuit respectively through a charging branch and a standby charging branch, the first power supply circuit is externally connected to the mains, the second power supply circuit is electrically connected to an energy storage station, and the energy storage station is electrically connected to the mains and a solar power station respectively; a central control module, a charging module, a power supply adjustment module, a battery health analysis module, a fault detection module and a communication module are arranged in the charging pile, the central control module is electrically connected to the charging module, the power supply adjustment module, the battery health analysis module, the fault detection module and the communication module respectively, and the charging module is electrically connected to the power supply adjustment module. By comprehensively and dynamically adjusting the power supply / energy storage path according to the charging status of each charging pile, the quality of electricity use is improved, while ensuring the charging stability of each charging pile, and at the same time, the battery health of the charging process is evaluated in real time.

Description

Technical Field

[0001] The present invention relates to the technical field of charging piles, and in particular to a 5G charging pile intelligent operation and maintenance system and method. Background Art

[0002] With the advent of the 5G era, charging piles are also moving towards a more intelligent direction. The "5G+smart charging pile" model has been introduced in coastal areas. The application of smart charging piles has greatly alleviated the charging efficiency of electric vehicles and also served as a carrier for the construction of 5G micro stations, which also saved a lot of land resources. However, at present, charging piles cannot be repaired quickly when they fail, and the subsequent operation and maintenance capabilities are weak, resulting in a small number of available charging piles and low user willingness to charge. In particular, the current charging piles cannot collect diversified user data and perceive charging load characteristics when in use, and cannot meet the needs of different vehicles for simultaneous adaptive power supply adjustments, which can easily cause local power supply grid collapse. Summary of the invention

[0003] In view of the technical problems that current charging piles cannot realize diversified user data collection and charging load characteristic perception, and cannot meet the adaptive power supply adjustment for simultaneous charging of different vehicles, the present invention proposes a 5G charging pile intelligent operation and maintenance system and method.

[0004] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0005] A 5G charging pile intelligent operation and maintenance system comprises several charging piles, wherein the charging piles are electrically connected to a first power supply circuit and a second power supply circuit respectively through a charging branch and a standby charging branch, the first power supply circuit is externally connected to the mains, the second power supply circuit is electrically connected to an energy storage station, and the energy storage station is electrically connected to the mains and a solar power station respectively; a central control module, a charging module, a power supply adjustment module, a battery health analysis module, a fault detection module and a communication module are arranged in the charging pile, the central control module is electrically connected to the charging module, the power supply adjustment module, the battery health analysis module, the fault detection module and the communication module respectively, the charging module is electrically connected to the power supply adjustment module, the power supply adjustment module is electrically connected to the charging branch, the standby branch, the first power supply circuit and the second power supply circuit respectively, the communication module is communicatively connected to a vehicle-mounted battery monitoring system and a remote monitoring and management host respectively, and the remote monitoring and management host is communicatively connected to a server.

[0006] Preferably, the charging module includes a fast charging interface and a slow charging interface, the fast charging interface and the slow charging interface are electrically connected to the power supply adjustment module respectively, the fast charging interface is provided with a fast charging battery detection unit, the slow charging interface is provided with a slow charging battery detection unit, and the fast charging battery detection unit and the slow charging battery detection unit are electrically connected to the central control module respectively.

[0007] Preferably, the central control module includes an FPGA controller, the fast-charging battery detection unit includes a first voltage sensor and a first current sensor, the slow-charging battery detection unit includes a second voltage sensor and a second current sensor, and the first voltage sensor, the first current sensor, the second voltage sensor and the second current sensor are all electrically connected to the FPGA controller.

[0008] Preferably, the power supply regulation module includes a first power supply circuit regulation unit, a second power supply circuit regulation unit, a charging branch regulation unit and a standby branch regulation unit, the first power supply circuit regulation unit is connected in series in the first power supply circuit, the second power supply circuit regulation unit is connected in series in the second power supply circuit, the charging branch regulation unit is connected in series in the charging branch, and the standby branch regulation unit is connected in series in the standby branch; the charging branch and the standby branch are electrically connected to the fast charging interface and the slow charging interface respectively through a power conversion unit.

[0009] Preferably, the first power supply circuit regulating unit, the second power supply circuit regulating unit, the charging branch regulating unit and the standby branch regulating unit all include intelligent circuit breakers, and the power conversion unit includes a power conversion switch.

[0010] Preferably, the communication module includes a Bluetooth communication module and a 5G communication module, the Bluetooth communication module is communicatively connected to the vehicle-mounted battery monitoring system, and the 5G communication module is communicatively connected to the remote monitoring host.

[0011] Preferably, the battery health analysis module includes a battery status acquisition unit, a charge amount calculation unit, a charging path planning unit, a charge status acquisition unit and a battery health evaluation unit; the battery status acquisition unit is used to obtain the current battery power, rated voltage, rated standard battery capacity and standard charging time parameters of the vehicle battery to be charged from the on-board battery monitoring system; the charge amount calculation unit is used to calculate the charge amount according to the current battery power and the rated standard battery capacity; the charging path planning unit is used to plan the optimal charging path according to the charge amount and the charging mode; the charging status acquisition unit is used to obtain the current charge amount, charging time and voltage parameters of the vehicle battery; the battery health evaluation unit is used to calculate the battery health value according to the current charge amount and the rated charge amount, the current charging time and the standard charging time. H , the specific calculation formula is:

[0012] Where Q tis the power supply when the current branch battery reaches the rated voltage, Q0 is the rated battery capacity, T1 is the charging time when the current branch battery reaches the rated voltage, T0 is the standard charging time, K is the correction factor.

[0013] Preferably, the power detection unit includes a power detector, which is arranged inside the charging pile and electrically connected to the charging interface; the leakage detection unit includes a leakage current sensor, the temperature detection unit includes an infrared temperature measurement camera, and the arc monitoring unit includes an arc sensor, and the power detector, the leakage current sensor, the infrared temperature measurement camera and the arc sensor are respectively electrically connected to the central control module through the UART communication interface.

[0014] The present invention also discloses a 5G charging pile intelligent operation and maintenance method, comprising the following steps:

[0015] S1. Obtain the battery information of the vehicle currently being charged at each charging pile;

[0016] S2. Calculate the required charging amount of each vehicle battery according to the vehicle battery information;

[0017] S3. Plan the power supply path according to the charging mode selected by the vehicle and the required charging amount of the vehicle battery;

[0018] S4, calculating the rated power supply of the power supply path according to the power supply path of each vehicle, and dynamically adjusting the power supply / energy storage path in combination with the real-time charging status of each vehicle;

[0019] S5. Calculate the battery health value of each vehicle based on the battery information and charging status of each vehicle.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention can calculate the required charging amount of each charging vehicle according to the charging status of each charging pile, and can flexibly adjust the power supply circuit according to the charging amount to ensure the charging stability of each charging pile, while realizing high-quality distribution of power grid electricity;

[0022] 2. The present invention can evaluate the battery health value of a charging vehicle based on its charging status, so that users can understand the battery status of the vehicle, which helps to improve the safety of vehicle use;

[0023] 3. The present invention can detect the charging status of the charging port in real time by arranging a fault detection module at the charging interface, thereby greatly improving the safety of vehicle charging. Once a charging abnormality occurs, an alarm can be quickly sent to the remote monitoring host, and the remote monitoring host can remotely control the charging pile to trip the gun and cut off the power;

[0024] 4. The present invention can realize the charging data collection of different vehicle models and different batteries, and monitor the changes of battery charging parameters in real time during the battery charging process. According to the charging status of each charging vehicle, the power supply circuit can be adjusted in time. When the rated power supply of the power supply circuit is greater than the charging amount required by each vehicle, the power supply circuit is adjusted in time to store energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0026] Figure 1 It is the overall architecture diagram of the present invention.

[0027] Figure 2 It is a working principle diagram of the present invention.

[0028] Figure 3 It is a working principle diagram of the battery health analysis module in the present invention.

[0029] Figure 4 It is a working principle diagram of the fault detection module in the present invention.

[0030] Figure 5 It is a working principle diagram of the power supply regulation module in the present invention.

[0031] Figure 6 It is the overall workflow diagram of the present invention. DETAILED DESCRIPTION

[0032] Example 1

[0033] The following is combined with Figure 1-5 , the technical solution of the present invention is further explained:

[0034] like Figure 1-Figure 5As shown, the present invention discloses a 5G charging pile intelligent operation and maintenance system, including several charging piles, the charging piles are electrically connected to the first power supply circuit and the second power supply circuit respectively through the charging branch and the spare charging branch, the first power supply circuit is externally connected to the mains, the second power supply circuit is electrically connected to the energy storage station, and the energy storage station is electrically connected to the mains and the solar power station respectively. That is to say, each charging pile can realize multi-path power supply through the dual power supply circuit, and at the same time, the charging branch and / or the spare charging branch switching state can be adjusted according to the charging mode to complete the fast or slow charging power supply adjustment of the charging pile; and one of the dual power supply circuits is externally connected to the mains, and the other is connected to the energy storage station. When the power load of each charging pile is low during the peak period of power consumption or the power load of each charging pile is low, the energy storage station is selected to power each charging pile, and when it is during the trough period of power consumption, the mains is selected to power each charging pile, and at the same time, the mains power supply state is adjusted in real time according to the charging state of each charging pile. When the power supply required by each charging pile is low, the mains power is switched to the energy storage station at the same time to absorb energy and store it, so as to realize efficient use of electric energy.

[0035] Specifically, the charging pile is provided with a central control module, a charging module, a power supply adjustment module, a battery health analysis module, a fault detection module and a communication module. The central control module is electrically connected to the charging module, the power supply adjustment module, the battery health analysis module, the fault detection module and the communication module respectively. The charging module is electrically connected to the power supply adjustment module. The power supply adjustment module is electrically connected to the charging branch, the backup branch, the first power supply circuit and the second power supply circuit respectively. The communication module is communicatively connected to the vehicle-mounted battery monitoring system and the remote monitoring and management host respectively, and the remote monitoring and management host is communicatively connected to the server. That is to say, a communication module is arranged in the charging pile. When the charging pile is in use, the communication module is used to communicate with the on-board battery monitoring system and the remote monitoring and management host respectively, and then the on-board battery monitoring system transmits the on-board battery information, including the battery rated power, voltage, current and temperature parameters, and at the same time, the fault detection module monitors the charging pile operation status in real time during the charging process, and the charging pile operation status parameters are uploaded to the remote monitoring host in real time, so as to achieve real-time monitoring of the charging pile. Once an abnormality occurs during the use of the charging pile, an alarm message can be sent to the remote monitoring and management host in time. At the same time, the management personnel can remotely interrupt the charging pile through the remote monitoring and management host, so as to achieve the safe use of the charging pile; when the charging pile is in use, the battery health analysis module is used to analyze the battery status according to the changes in the charging battery power and voltage after reaching the rated voltage, and the battery status analysis information is uploaded to the remote monitoring and management host in real time, and the remote monitoring and management host sends the battery status analysis information to the user end in the form of SMS, so that the user can understand the health status of the on-board battery. It should be noted that the power required by each rechargeable battery is calculated based on the charging module status selected by the user and the change in the charging status of the charging module. At the same time, according to the current charging time period and whether the city power is at a peak period, the power supply adjustment module adjusts the power supply circuit to meet the charging requirements of different charging modes and different charging amounts. It should be noted that the communication module includes a Bluetooth communication module and a 5G communication module. The Bluetooth communication module is connected to the vehicle battery monitoring system, and the 5G communication module is connected to the remote monitoring host.

[0036] In some embodiments, the charging module includes a fast charging interface and a slow charging interface, the fast charging interface and the slow charging interface are electrically connected to the power supply adjustment module respectively, the fast charging interface is provided with a fast charging battery detection unit, the slow charging interface is provided with a slow charging battery detection unit, and the fast charging battery detection unit and the slow charging battery detection unit are electrically connected to the central control module respectively. That is to say, a fast charging interface and a slow charging interface are respectively provided in the charging pile, the fast charging interface and the slow charging interface are externally connected to a charging gun, and a fast charging battery detection unit and a slow charging battery detection unit are respectively provided in the fast charging interface and the slow charging interface, and the fast charging battery detection unit and the slow charging battery detection unit are respectively used to detect the fast charging state change and the slow charging state change, and then the acquired fast charging state change parameters or slow charging state change parameters can be transmitted to the central control module, and the central control module sends the received fast charging state change parameters or slow charging state change parameters to the battery health analysis unit, and analyzes the battery health value in combination with the battery parameters fed back by the vehicle battery monitoring system.

[0037] Optionally, the central control module includes an FPGA controller, the fast-charge battery detection unit includes a first voltage sensor and a first current sensor, the slow-charge battery detection unit includes a second voltage sensor and a second current sensor, and the first voltage sensor, the first current sensor, the second voltage sensor, and the second current sensor are all electrically connected to the FPGA controller. In other words, current sensors and voltage sensors are respectively set at the fast-charge interface and the slow-charge interface to detect fast-charge or slow-charge charging parameters in real time, thereby providing basic parameters for subsequent analysis of battery health values.

[0038] Specifically, the power supply regulation module includes a first power supply circuit regulation unit, a second power supply circuit regulation unit, a charging branch regulation unit and a standby branch regulation unit, the first power supply circuit regulation unit is connected in series in the first power supply circuit, the second power supply circuit regulation unit is connected in series in the second power supply circuit, the charging branch regulation unit is connected in series in the charging branch, and the standby branch regulation unit is connected in series in the standby branch; the charging branch and the standby branch are electrically connected to the fast charging interface and the slow charging interface respectively through the power conversion unit. That is to say, the first power supply circuit regulation unit, the second power supply circuit regulation unit, the charging branch regulation unit and the standby branch regulation unit are connected in series in the first power supply circuit, the second power supply circuit, the charging branch and the standby charging branch respectively, and by controlling the switching states of the first power supply circuit regulation unit, the second power supply circuit regulation unit, the charging branch regulation unit and the standby charging branch charging unit, a multi-source multi-path power supply circuit can be completed, which greatly improves the power supply reliability and satisfies the fast charging and slow charging states at the same time. In other words, when the user chooses the slow charging interface, the second power supply circuit can be selected for power supply, and the energy storage station can be used as the power supply to power the charging pile; when the user chooses the fast charging interface, the first power supply circuit is selected for power supply, and at the same time, according to the changes in the charging amount of each rechargeable battery during the charging process, when the charging amount required by each rechargeable battery is lower than the set ratio of the rated power supply of the first power supply circuit, the second power supply circuit can be selected as the power supply, or the redundant power of the first power supply circuit can be divided to the second power supply circuit for energy absorption and storage.

[0039] It should be noted that the first power supply circuit adjustment unit, the second power supply circuit adjustment unit, the charging branch adjustment unit and the standby branch adjustment unit all include intelligent circuit breakers, and the power conversion unit includes a power conversion switch. In other words, intelligent circuit breakers are arranged in each circuit and branch respectively, so as to complete the power supply status control of each circuit and branch. At the same time, the power supply circuit can be switched directly through the power conversion switch at the fast charging interface and the slow charging interface, which ensures the power supply reliability on the one hand and realizes the overall power supply flexibility on the other hand.

[0040] Specifically, the battery health analysis module includes a battery status acquisition unit, a charging amount calculation unit, a charging path planning unit, a charging status acquisition unit and a battery health evaluation unit; the battery status acquisition unit is used to obtain the current battery power, rated voltage, rated standard battery capacity and standard charging time parameters of the vehicle battery to be charged from the on-board battery monitoring system; the charging amount calculation unit is used to calculate the charging amount according to the current battery power and the rated standard battery capacity; the charging path planning unit is used to plan the optimal charging path according to the charging amount and the charging mode; the charging status acquisition unit is used to obtain the current charging power, charging time and voltage parameters of the vehicle battery; the battery health evaluation unit is used to calculate the battery health value based on the current charging power and the rated charging power, the current charging time and the standard charging time. That is to say, the battery status acquisition unit is used to obtain the battery status parameters, and the battery status parameters include the current battery power, rated voltage, rated battery capacity and standard charging time parameters. The charging capacity calculation unit is then used to calculate the required charging capacity of the battery. According to the number of fast-charging or slow-charging of each charging pile, combined with the charging capacity required for charging the battery of each fast-charging charging pile and the charging capacity required for charging the battery of the slow-charging charging pile, the fast-charging charging capacity and the slow-charging charging capacity are calculated respectively. When the total amount of the fast-charging charging capacity and the slow-charging charging capacity is lower than the total power supply of the second power supply circuit, the fast-charging and slow-charging as a whole select the second power supply circuit for power supply; when the total amount of the fast-charging charging capacity and the slow-charging charging capacity is greater than the total power supply of the second power supply circuit In the slow charging mode, power is supplied through the second power supply circuit, and in the fast charging mode, power is supplied by the first power supply circuit. During the charging stage, according to the change of the required power supply, combined with the charging time period, when it is in the peak period of electricity consumption, and when the required charging amount is lower than the current power supply of the second power supply circuit, the fast charging mode is switched to the second power supply circuit. When it is in the valley period of electricity consumption, the first power supply circuit supplies power to the charging pile and the energy storage station respectively. At the same time, the charging status acquisition unit is used to obtain the current charging voltage, current and charging time of the rechargeable battery in real time. When the charging voltage reaches the rated charging voltage, it reaches the full state, and the charging time is calculated at this time. Finally, the battery health evaluation unit evaluates the battery health value H , the specific calculation formula is:

[0041] Where Q t is the power supply when the current branch battery reaches the rated voltage, Q0 is the rated battery capacity, T1 is the charging time when the current branch battery reaches the rated voltage, T0 is the standard charging time, K is the correction factor ( K The value is 0.7-0.9, refer to the charging temperature value, the higher the charging temperature, the smaller the correction coefficient).

[0042] Specifically, the fault detection module includes a power detection unit, a leakage detection unit, a temperature detection unit and an arc monitoring unit. The power detection unit is used to detect the charging power of the charging interface of the charging pile in real time. The leakage detection unit is used to monitor whether the charging interface has leakage. The temperature detection unit is used to detect the heating of the charging interface. The arc monitoring unit is used to monitor whether the charging interface has arc. The power detection unit, the leakage detection unit, the temperature detection unit and the arc monitoring unit are all electrically connected to the central control module. In other words, the power detection unit, the leakage detection unit, the temperature detection unit and the arc monitoring unit are respectively arranged in the fast charging interface and the slow charging interface, which greatly improves the charging safety of the charging pile.

[0043] Optionally, the power detection unit includes a power detector, the power detector is arranged inside the charging pile, and the power detector is electrically connected to the charging interface; the leakage detection unit includes a leakage current sensor, the temperature detection unit includes an infrared temperature measurement camera, the arc monitoring unit includes an arc sensor, and the power detector, the leakage current sensor, the infrared temperature measurement camera and the arc sensor are electrically connected to the central control module through the UART communication interface respectively. In other words, the power detector is used to detect the charging power parameters of the charging pile, the leakage current sensor is used to monitor the monitoring interface in real time to see if there is leakage, and the infrared temperature measurement camera is used to detect the charging temperature change of the charging interface in real time. The arc sensor detects in real time whether there is an arc in the charging interface, which greatly improves the charging safety of the charging pile charging interface.

[0044] Embodiment 2

[0045] like Figure 6 As shown, the present invention also discloses a 5G charging pile intelligent operation and maintenance method, comprising the following steps:

[0046] S1. Obtain the battery information of the vehicle currently being charged at each charging pile. That is, the battery status acquisition unit in each charging pile is used to obtain the current battery power, rated voltage, rated standard battery capacity and standard charging time parameters of the battery of the vehicle to be charged from the vehicle-mounted battery monitoring system.

[0047] S2. Calculate the required charge amount of each vehicle battery according to the vehicle battery information. That is, the charge amount calculation unit is used to calculate the charge amount according to the current battery power and the rated standard battery capacity, according to the number of fast charging or slow charging of each charging pile, combined with the required charge amount of each fast charging pile charging battery and the required charge amount of each slow charging pile charging battery.

[0048] S3. Plan the power supply path according to the charging mode selected by the vehicle and the required charge amount of the vehicle battery. That is to say, according to the number of fast-charge or slow-charge of each charging pile, combined with the required charge amount of each fast-charge charging pile battery and the required charge amount of the slow-charge charging pile battery, calculate the fast-charge charge amount and the slow-charge charge amount respectively. When the total amount of the fast-charge charge amount and the slow-charge charge amount is lower than the total power supply of the second power supply circuit, the fast-charge and slow-charge as a whole select the second power supply circuit for power supply; when the total amount of the fast-charge charge amount and the slow-charge charge amount is greater than the total power supply of the second power supply circuit, the slow-charge mode supplies power through the second power supply circuit, and the fast-charge mode selects the first power supply circuit for power supply.

[0049] S4, calculate the rated power supply of the power supply path according to each vehicle power supply path, and dynamically adjust the power supply / energy storage path in combination with the real-time charging status of each vehicle. That is to say, in the charging stage, according to the change of the required power supply, combined with the charging time period, when it is in the peak period of electricity consumption, and when the required charging amount is lower than the current power supply of the second power supply circuit, the fast charging mode is switched to the second power supply circuit, and when it is in the valley period of electricity consumption, the first power supply circuit supplies power to the charging pile and the energy storage station respectively.

[0050] S5. Calculate the battery health value of each vehicle based on the battery information and charging status of each vehicle. That is, use the charging status acquisition unit to obtain the current charging voltage, current and charging time of the rechargeable battery in real time. When the charging voltage reaches the rated charging voltage, it reaches the full state, and the charging time is calculated at this time; finally, the battery health evaluation unit evaluates the battery health value. H , the specific calculation formula is:

[0051] Where Q t is the power supply when the current branch battery reaches the rated voltage, Q0 is the rated battery capacity, T1 is the charging time when the current branch battery reaches the rated voltage, T0 is the standard charging time, K is the correction factor ( K The value is 0.7-0.9, refer to the charging temperature value, the higher the charging temperature, the smaller the correction coefficient).

[0052] 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 are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A 5G charging pile intelligent operation and maintenance system, including a plurality of charging piles, characterized in that: The charging pile is electrically connected to the first power supply circuit and the second power supply circuit respectively through the charging branch and the backup branch, the first power supply circuit is externally connected to the mains, the second power supply circuit is electrically connected to the energy storage station, and the energy storage station is electrically connected to the mains and the solar power station respectively; the charging pile is provided with a central control module, a charging module, a power supply adjustment module, a battery health analysis module, a fault detection module and a communication module, the central control module is electrically connected to the charging module, the power supply adjustment module, the battery health analysis module, the fault detection module and the communication module respectively, the charging module is electrically connected to the power supply adjustment module, the power supply adjustment module is electrically connected to the charging branch, the backup branch, the first power supply circuit and the second power supply circuit respectively, the communication module is communicatively connected to the vehicle battery monitoring system and the remote monitoring and management host respectively, and the remote monitoring and management host is communicatively connected to the server; The charging module includes a fast charging interface and a slow charging interface, the fast charging interface and the slow charging interface are electrically connected to the power supply adjustment module respectively, the fast charging interface is provided with a fast charging battery detection unit, the slow charging interface is provided with a slow charging battery detection unit, and the fast charging battery detection unit and the slow charging battery detection unit are electrically connected to the central control module respectively; The battery health analysis module includes a battery status acquisition unit, a charge capacity calculation unit, a charging path planning unit, a charging status acquisition unit and a battery health evaluation unit; the battery status acquisition unit is used to obtain the current battery capacity, rated voltage, rated standard battery capacity and standard charging time parameters of the battery to be charged from the vehicle battery monitoring system; The charging capacity calculation unit is used to calculate the charging capacity according to the current battery power and the rated standard battery capacity; The charging path planning unit is used to plan the optimal charging path according to the charging amount and the charging mode, and calculate the fast charging amount and the slow charging amount respectively according to the number of fast charging or slow charging of each charging pile, combined with the charging amount required for the charging battery of each fast charging charging pile and the charging amount required for the charging battery of the slow charging charging pile. When the total amount of the fast charging amount and the slow charging amount is lower than the total power supply of the second power supply circuit, the fast charging and slow charging as a whole select the second power supply circuit for power supply; when the total amount of the fast charging amount and the slow charging amount is greater than the total power supply of the second power supply circuit, the slow charging mode is powered by the second power supply circuit, and the fast charging mode selects the first power supply circuit for power supply. During the charging stage, according to the change in the required power supply amount and combined with the charging time period, when it is in the peak period of electricity consumption, and when the required charging amount is lower than the current power supply of the second power supply circuit, the fast charging mode is switched to the second power supply circuit. When it is in the valley period of electricity consumption, the first power supply circuit supplies power to the charging pile and the energy storage station respectively. The charging state acquisition unit is used to obtain the current charging power, charging time and voltage parameters of the vehicle battery; the battery health evaluation unit is used to calculate the battery health value H according to the current charging power and the rated charging power, the current charging time and the standard charging time. The specific calculation formula is: Where Qt is the power supply when the current branch battery reaches the rated voltage, Q0 is the rated battery capacity of the battery, T1 is the charging time when the current branch battery reaches the rated voltage, T0 is the standard charging time, and K is the correction factor.

2. The 5G charging pile intelligent operation and maintenance system according to claim 1, characterized in that: The central control module includes an FPGA controller, the fast-charging battery detection unit includes a first voltage sensor and a first current sensor, the slow-charging battery detection unit includes a second voltage sensor and a second current sensor, and the first voltage sensor, the first current sensor, the second voltage sensor and the second current sensor are all electrically connected to the FPGA controller.

3. The 5G charging pile intelligent operation and maintenance system according to claim 1, characterized in that: The power supply regulation module includes a first power supply circuit regulation unit, a second power supply circuit regulation unit, a charging branch regulation unit and a standby branch regulation unit. The first power supply circuit regulation unit is connected in series in the first power supply circuit, the second power supply circuit regulation unit is connected in series in the second power supply circuit, the charging branch regulation unit is connected in series in the charging branch, and the standby branch regulation unit is connected in series in the standby branch; the charging branch and the standby branch are electrically connected to the fast charging interface and the slow charging interface respectively through a power conversion unit.

4. The 5G charging pile intelligent operation and maintenance system according to claim 3, characterized in that: The first power supply circuit regulating unit, the second power supply circuit regulating unit, the charging branch regulating unit and the standby branch regulating unit all include intelligent circuit breakers, and the power conversion unit includes a power conversion switch.

5. The 5G charging pile intelligent operation and maintenance system according to claim 1, characterized in that: The communication module includes a Bluetooth communication module and a 5G communication module. The Bluetooth communication module is communicatively connected to the vehicle-mounted battery monitoring system, and the 5G communication module is communicatively connected to the remote monitoring host.

6. The 5G charging pile intelligent operation and maintenance system according to claim 1, characterized in that: The fault detection module includes a power detection unit, a leakage detection unit, a temperature detection unit and an arc monitoring unit. The power detection unit is used to detect the charging power of the charging pile charging interface in real time. The leakage detection unit is used to monitor whether the charging interface has leakage. The temperature detection unit is used to detect the heating of the charging interface. The arc monitoring unit is used to monitor whether an arc occurs in the charging interface. The power detection unit, the leakage detection unit, the temperature detection unit and the arc monitoring unit are all electrically connected to the central control module.

7. The 5G charging pile intelligent operation and maintenance system according to claim 6, characterized in that: The power detection unit includes a power detector, which is arranged inside the charging pile and is electrically connected to the charging interface; the leakage detection unit includes a leakage current sensor, the temperature detection unit includes an infrared temperature measurement camera, and the arc monitoring unit includes an arc sensor. The power detector, the leakage current sensor, the infrared temperature measurement camera and the arc sensor are respectively electrically connected to the central control module through a UART communication interface.

8. The operation and maintenance method of the 5G charging pile intelligent operation and maintenance system as claimed in claim 1, characterized in that: The following steps are involved: S1. Obtain the battery information of the vehicles currently being charged at each charging pile; S2. Calculate the required charge amount of each vehicle battery based on the vehicle battery information; S3. Plan the power supply path based on the vehicle selected charging mode and the required charge amount of the vehicle battery; S4, calculate the rated power supply of the power supply path according to the power supply path of each vehicle, and dynamically adjust the power supply / energy storage path in combination with the real-time charging status of each vehicle; S5, calculate the battery health value of each vehicle according to the battery information and charging status of each vehicle.

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