A big data-based charging pile online detection system

Abstract

The utility model discloses a kind of charging pile online detection system based on big data, it is related to charging detection technical field, solve the technical problem that supervisory department is used for charging equipment charging electric energy measurement online detection equipment investment cost is too high.The utility model includes output voltage sensor, shunt resistance voltage sensor, shunt resistance temperature sensor, charging pile ammeter, controller, controller is connected with output voltage sensor, shunt resistance voltage sensor, shunt resistance temperature sensor and charging pile ammeter respectively.The utility model utilizes the resistance shunt mode of charging pile itself to detect the voltage on shunt resistance, in combination with temperature and power and other factors, again using big data algorithm calibration, both reduce cost, and can reach similar effect.

Description

Technical Field

[0001] This utility model belongs to the field of charging detection technology, and in particular relates to an online detection system for charging piles based on big data. Background Technology

[0002] With the increasing popularity of electric vehicles in China, there are more and more charging equipment such as charging stations and charging piles. During the charging process, the metering of charging energy is a key concern. If the billed amount of electricity is more than the actual amount of electricity charged, the charging vehicle owner will suffer losses. If the billed amount of electricity is less than the actual amount of electricity charged, the charging station operator will suffer losses. Therefore, the accuracy of charging energy metering is directly related to the vital interests of both charging vehicle owners and charging station operators.

[0003] In order to accurately monitor the metering of charging energy online, a charging energy detection system needs to be installed on the charging equipment to ensure the accuracy of charging energy metering and protect the legitimate rights and interests of charging vehicle owners and charging station operators.

[0004] Existing online detection methods for charging equipment generally include the following steps: First, install a detection device to acquire the voltage and current of the charging equipment in real time, and integrate the data to obtain the charging amount; second, acquire the voltage, current, and charging amount data of the charging pile meter; third, upload this data to a monitoring platform, which uses big data algorithms to detect in real time whether the charging pile meter reading is within the error range.

[0005] Existing online monitoring systems, embedded in charging equipment to acquire real-time voltage and current readings, include at least voltage and current sensors. While voltage sensors are relatively inexpensive, current sensors are significantly more expensive, typically accounting for up to 80% of the overall hardware cost. Departments responsible for monitoring the accuracy of charging energy metering must install such systems in every charging station to protect the legal rights of both the charging and receiving parties. With the increasing number of shared charging facilities such as electric vehicle charging stations and charging piles, the investment costs for online monitoring equipment for charging energy metering are rising.

[0006] Therefore, this utility model designs an online detection system and method for charging piles based on big data, in order to at least solve the technical problem of excessively high investment costs for online detection equipment for metering charging power of charging equipment by regulatory authorities. Summary of the Invention

[0007] The technical problem this utility model aims to solve is to provide an online detection system for charging piles based on big data, so as to at least solve the technical problem of excessively high investment costs for online detection equipment for metering charging power of charging equipment by regulatory authorities.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] A big data-based online charging pile detection system includes:

[0010] Output voltage sensor, shunt resistor voltage sensor, shunt resistor temperature sensor, charging pile meter, controller;

[0011] The output voltage sensor has its input terminal connected in parallel to the output port of the charging gun, and its output terminal connected to the controller.

[0012] The shunt resistor voltage sensor has its input terminal connected in parallel with the shunt resistor of the charging pile, and its output terminal connected to the controller.

[0013] The shunt resistor temperature sensor has its input terminal set on the surface of the shunt resistor and its output terminal connected to the controller.

[0014] The charging station's electricity meter is connected to the controller;

[0015] The controller's input terminals are connected to the output voltage sensor, shunt resistor voltage sensor, shunt resistor temperature sensor, and charging pile meter, while its output terminal is connected to the server.

[0016] Furthermore, the output voltage sensor circuit is as follows: the RX pin of IM1253E chip 1 is connected to one end of resistor R1, the other end of resistor R1 is connected to the OUTA pin of ISO7221CDR chip U9, the TX pin of voltage sensor A is connected to one end of resistor R3, the other end of resistor R3 is connected to the INB pin of U9, the PF pin of IM1253E chip 1 is connected to one end of resistor R5, the other end of resistor R5 is connected to the positive terminal of the LED in optocoupler U12, the negative terminal of the LED is connected to the digital ground line DGND1, and the NPN pin of U12... The emitter and collector of the phototransistor are connected to pin 1 and pin 2 of the header H1, respectively. The V+ pin of the IM1253E chip 1 is connected to the power supply module of the output voltage sensor. The V- / L pin of the IM1253E chip 1 is connected to the digital ground DGND1. The I- pin of the IM1253E chip 1 is connected to pin 1 of the terminal P2 for the current of gun 1. The I+ pin is connected to pin 2 of the terminal P2. The N pin of the IM1253E chip 1 is connected to pin 1 of the terminal P3 for the voltage of gun 1. The pin 2 of the terminal P3 is connected to the digital ground DGND1.

[0017] The VCC1 pin of U9 is connected to the power supply module of the output voltage sensor, the GND1 pin of U9 is connected to the digital ground DGND1, the VCC2 pin of U9 is connected to the controller, the INA pin of U9 is connected to the controller, the OUTB pin of U9 is connected to the controller, the GND2 pin of U9 is connected to the digital ground DGND4, one end of capacitor C23 is connected to the power supply module of the output voltage sensor, the other end of capacitor C23 is connected to the digital ground DGND1, one end of capacitor C24 is connected to the controller, and the other end of capacitor C24 is connected to the digital ground DGND4.

[0018] Furthermore, the circuit of the shunt resistor voltage sensor is as follows: the RX pin of IM1253E chip 2 is connected to one end of resistor R15, the other end of resistor R15 is connected to the OUTA pin of ISO7221CDR chip U14, the TX pin of IM1253E chip 2 is connected to one end of resistor R12, the other end of resistor R12 is connected to the INB pin of chip U14, the PF pin of IM1253E chip 2 is connected to one end of resistor R14, the other end of resistor R14 is connected to the positive terminal of the light-emitting diode in optocoupler U15, the negative terminal of the light-emitting diode is connected to the digital ground line DGND1, and the optocoupler U15... The emitter and collector of the phototransistor are connected to pin 1 and pin 2 of the header H2, respectively. The V+ pin of the IM1253E chip 2 is connected to the power supply circuit of the shunt resistor voltage sensor. The V- / L pin of the IM1253E chip 2 is connected to the digital ground DGND2. The I- pin of the IM1253E chip 2 is connected to pin 1 of the current terminal P4 of the gun 2. The I+ pin of the IM1253E chip 2 is connected to pin 2 of the current terminal P4 of the gun 2. The N pin of the IM1253E chip 2 is connected to pin 1 of the voltage terminal P5 of the gun 2. The pin 2 of the terminal P5 is connected to the digital ground DGND2.

[0019] The VCC1 pin of chip U14 is connected to the shunt resistor voltage sensor power supply module, the GND1 pin of chip U14 is connected to the digital ground DGND2, the VCC2 pin of chip U14 is connected to the controller, the INA pin of chip U14 is connected to the controller, the OUTB pin of chip U14 is connected to the controller, the GND2 pin of chip U14 is connected to the digital ground DGND4, one end of capacitor C28 is connected to the shunt resistor voltage sensor power supply module, the other end of capacitor C28 is connected to the digital ground DGND2, one end of capacitor C29 is connected to the controller, and the other end of capacitor C29 is connected to the digital ground DGND4.

[0020] Furthermore, the charging pile meter is connected to the controller via an RS485 communication module. The RS485 communication module includes: an ISO3082DWR chip U17; the VCC2 pin of chip U17 is connected to the power supply circuit of the RS485 communication module; one end of capacitor C36 is connected to the VCC2 pin, and the other end of capacitor C36 is connected to the ground terminal G5VA; the GND2 pin of U17 is connected to the ground terminal G5VA; one end of resistors R17, R18, and R19, and one end of capacitor C37 are connected to pin B of U17; the other end of resistor R17 is connected to the power supply circuit of the RS485 communication module; the other end of resistor R19, one end of resistor R21, one end of resistor R20, and one end of capacitor C39 are connected to pin A of U17; the other end of resistor R21 is connected to the ground terminal G5VA; and capacitor C37… The other end of capacitor C39 is connected to ground terminal G5VA. The other end of resistor R20 is connected to pin 2 of ESD protection diode Q1 and pin 2 of terminal P6 respectively. The other end of resistor R18 is connected to pin 1 of ESD protection diode and pin 1 of terminal P6 respectively. Pin 3 of ESD protection diode is connected to ground terminal G5VA. Pin GND2 of U17 is connected to ground terminal G5VA. One end of capacitor C38 is connected to pin VCC1 of U17. The other end of capacitor C38 is connected to pin GND1 of U17. Pin VCC1 of U17 is connected to the controller. Pin GND1 of U17 is connected to digital ground DGND4. Pin R of U17 is connected to the controller. Pins RE and DE of U17 are connected to the controller. Pin D of U17 is connected to the controller.

[0021] Furthermore, the circuit of the output voltage sensor power supply module is as follows: the VIN pin of the B2412S-2WR2 chip U1 is connected to one end of inductor L1 and the positive terminal of polarized capacitor C2. The other end of inductor L1 is connected to the negative terminal of surface-mount Schottky diode D1 and the positive terminal of polarized capacitor C1, and connected to a 24V power supply. The positive terminal of surface-mount Schottky diode D1 and the negative terminal of transient suppression diode TVS1 are connected to pin 1 of terminal P1. The GND pin of U1 is connected to the negative terminals of polarized capacitor C2 and C1, the positive terminal of transient suppression diode TVS1, the ground terminal GND, and the pin of terminal P1. Pin 2 is connected. The negative terminal of polarized capacitor C9 is connected to digital ground DGND1 and the -Vo pin of U1, respectively. The positive terminal of polarized capacitor C9 is connected to the +Vo pin of U1. The +Vo pin of U1 is connected to the Vin pin of AMS1117-5.0 chip U4 and the positive terminal of polarized capacitor C14, respectively. The Vout pin of chip U4 is connected to the VCC1 pin of U9, the V+ pin of IM1253E chip 1, one end of capacitor C23, and the positive terminal of polarized capacitor C13, respectively. The I pin of U4, the negative terminals of polarized capacitor C14 and C13 are connected to digital ground DGND1, respectively.

[0022] Furthermore, the shunt resistor voltage sensor power supply module is specifically configured as follows: the VIN pin of chip U2 (B2412S-2WR2) is connected to one end of inductor L2 and one end of capacitor C4; the other end of inductor L2 is connected to the positive terminal of polarized capacitor C3 and the 24V power supply; the GND pin of U2 is connected to the negative terminals of polarized capacitors C4 and C3 respectively; the negative terminal of polarized capacitor C3 is connected to the ground terminal GND; and the negative terminal of polarized capacitor C10 is connected to the digital ground DGND2 and the -Vo pin of U2 respectively. The positive terminal of polarized capacitor C10 is connected to the +Vo pin of U2; the +Vo pin of U2 is connected to the Vin pin of AMS1117-5.0 chip U5 and the positive terminal of polarized capacitor C17; the Vout pin of U5 is connected to the V+ pin of IM1253E chip 2, the VCC1 pin of U14, one end of capacitor C28, and the positive terminal of polarized capacitor C15; the I pin of U5, the negative terminal of polarized capacitor C17, and the negative terminal of polarized capacitor C15 are connected to the digital ground line DGND2.

[0023] Furthermore, the power supply circuit of the RS485 communication module is as follows: the VIN pin of the B2412S-2WR2 chip U7 is connected to one end of the inductor L4 and the positive terminal of the polarized capacitor C8. The other end of the inductor L4 is connected to the positive terminal of the polarized capacitor C7 and the 24V power supply. The GND pin of U7 is connected to the negative terminals of the polarized capacitor C8, the negative terminals of the polarized capacitor C7, and the ground terminal GND. The negative terminal of the polarized capacitor C12 is connected to the ground G5VA and the -Vo pin of U7. The positive terminal of the polarized capacitor C12 is connected to the other end of R17, the VCC2 pin of U17, and the +Vo pin of U7.

[0024] Furthermore, the controller uses an STM32F103RCT6 chip.

[0025] Furthermore, the controller connects to the server via Ethernet or a 4G / 5G network.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] This invention utilizes the resistance shunt method of the charging pile itself to detect the voltage on the shunt resistor. Combined with factors such as temperature and power, and then using big data algorithms for calibration, it can reduce costs while achieving similar results. Attached Figure Description

[0028] Figure 1 This is a structural block diagram of the present utility model.

[0029] Figure 2 The circuit diagram is for the power supply module of the output voltage sensor of this utility model.

[0030] Figure 3The circuit diagram shows the power supply circuit for the shunt resistor voltage sensor of this utility model.

[0031] Figure 4 The circuit diagram is for the RS485 power supply module of this utility model.

[0032] Figure 5 This is the circuit diagram of the output voltage sensor of this utility model.

[0033] Figure 6 This is the circuit diagram of the shunt resistor voltage sensor of this utility model.

[0034] Figure 7 This is the circuit diagram of the controller of this utility model.

[0035] Figure 8 This is the circuit diagram of the RS485 communication module of this utility model. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0037] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; of course, they can also refer to a mechanical connection or an electrical connection; furthermore, they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] Example 1

[0040] like Figure 1-8 As shown, an online charging pile detection system based on big data includes:

[0041] Output voltage sensor, shunt resistor voltage sensor, shunt resistor temperature sensor, charging pile meter, controller;

[0042] The output voltage sensor has its input terminal connected in parallel to the output port of the charging gun, and its output terminal connected to the controller.

[0043] The shunt resistor voltage sensor has its input terminal connected in parallel with the shunt resistor of the charging pile, and its output terminal connected to the controller.

[0044] The shunt resistor temperature sensor has its input terminal set on the surface of the shunt resistor and its output terminal connected to the controller.

[0045] The charging station's electricity meter is connected to the controller;

[0046] The controller's input terminals are connected to the output voltage sensor, shunt resistor voltage sensor, shunt resistor temperature sensor, and charging pile meter, while its output terminal is connected to the server.

[0047] The output voltage sensor, shunt resistor voltage sensor, shunt resistor temperature sensor, and charging pile meter measure the actual charging voltage, shunt resistor voltage, shunt resistor temperature, and meter voltage, current, and power values ​​in real time, respectively, and upload the measured data to the controller for storage. Simultaneously, the controller uploads the received data to the server for storage. After data processing, the server sends the shunt resistor value back to the controller. Based on the shunt resistor value, shunt resistor voltage, and actual charging voltage, the controller calculates the actual charging current and actual charging power values ​​and transmits these values ​​to the server via Ethernet or 4G / 5G network. The server calculates whether the difference between the actual charging power value and the meter power value exceeds a preset threshold. If it does, the server alarms and notifies the inspection personnel to check; otherwise, the server continues processing the next set of data.

[0048] Example 2

[0049] like Figure 1-8 As shown, an online charging pile detection system based on big data includes:

[0050] Output voltage sensor, shunt resistor voltage sensor, shunt resistor temperature sensor, charging pile meter, controller;

[0051] The output voltage sensor has its input terminal connected in parallel to the output port of the charging gun, and its output terminal connected to the controller.

[0052] The shunt resistor voltage sensor has its input terminal connected in parallel with the shunt resistor of the charging pile, and its output terminal connected to the controller.

[0053] The shunt resistor temperature sensor has its input terminal set on the surface of the shunt resistor and its output terminal connected to the controller.

[0054] The charging station's electricity meter is connected to the controller;

[0055] The controller's input terminals are connected to the output voltage sensor, shunt resistor voltage sensor, shunt resistor temperature sensor, and charging pile meter, while its output terminal is connected to the server.

[0056] The output voltage sensor circuit is as follows: the RX pin of IM1253E chip 1 is connected to one end of resistor R1, and the other end of resistor R1 is connected to the OUTA pin of ISO7221CDR chip U9. The TX pin of voltage sensor A is connected to one end of resistor R3, and the other end of resistor R3 is connected to the INB pin of U9. The PF pin of IM1253E chip 1 is connected to one end of resistor R5, and the other end of resistor R5 is connected to the positive terminal of the LED in optocoupler U12. The negative terminal of the LED is connected to the digital ground line DGND1. The NPN photosensitive element in U12... The emitter and collector of the transistor are connected to pin 1 and pin 2 of the header H1, respectively. The V+ pin of the IM1253E chip 1 is connected to the power supply module of the output voltage sensor. The V- / L pin of the IM1253E chip 1 is connected to the digital ground DGND1. The I- pin of the IM1253E chip 1 is connected to pin 1 of the terminal P2 for the current of gun 1. The I+ pin is connected to pin 2 of the terminal P2. The N pin of the IM1253E chip 1 is connected to pin 1 of the terminal P3 for the voltage of gun 1. The pin 2 of the terminal P3 is connected to the digital ground DGND1.

[0057] The VCC1 pin of U9 is connected to the power supply module of the output voltage sensor, the GND1 pin of U9 is connected to the digital ground DGND1, the VCC2 pin of U9 is connected to the controller, the INA pin of U9 is connected to the controller, the OUTB pin of U9 is connected to the controller, the GND2 pin of U9 is connected to the digital ground DGND4, one end of capacitor C23 is connected to the power supply module of the output voltage sensor, the other end of capacitor C23 is connected to the digital ground DGND1, one end of capacitor C24 is connected to the controller, and the other end of capacitor C24 is connected to the digital ground DGND4.

[0058] This embodiment 2, based on embodiment 1, presents a more optimized structure for the output voltage sensor. The IM1253E chip is a single-phase AC / DC power metering module capable of measuring multiple power parameters such as voltage, current, active power, energy, and temperature, meeting various power monitoring needs. It also features power-loss protection for power data, ensuring data security and reliability. The ISO7221CDR chip is a digital isolator, primarily providing high-voltage isolation in the circuit while simultaneously enabling digital signal transmission. The combination of the IM1253E and ISO7221CDR chips allows the output voltage sensor to accurately and rapidly transmit the acquired actual charging voltage (output voltage) signal to the controller.

[0059] Example 3

[0060] like Figure 1-8 As shown, an online charging pile detection system based on big data includes:

[0061] Output voltage sensor, shunt resistor voltage sensor, shunt resistor temperature sensor, charging pile meter, controller;

[0062] The output voltage sensor has its input terminal connected in parallel to the output port of the charging gun, and its output terminal connected to the controller.

[0063] The shunt resistor voltage sensor has its input terminal connected in parallel with the shunt resistor of the charging pile, and its output terminal connected to the controller.

[0064] The shunt resistor temperature sensor has its input terminal set on the surface of the shunt resistor and its output terminal connected to the controller.

[0065] The charging station's electricity meter is connected to the controller;

[0066] The controller's input terminals are connected to the output voltage sensor, shunt resistor voltage sensor, shunt resistor temperature sensor, and charging pile meter, while its output terminal is connected to the server.

[0067] The circuit of the shunt resistor voltage sensor is as follows: the RX pin of IM1253E chip 2 is connected to one end of resistor R15, the other end of resistor R15 is connected to the OUTA pin of ISO7221CDR chip U14, the TX pin of IM1253E chip 2 is connected to one end of resistor R12, the other end of resistor R12 is connected to the INB pin of chip U14, the PF pin of IM1253E chip 2 is connected to one end of resistor R14, the other end of resistor R14 is connected to the positive terminal of the LED in optocoupler U15, the negative terminal of the LED is connected to the digital ground line DGND1, and the LED in optocoupler U15... The emitter and collector of the phototransistor are connected to pin 1 and pin 2 of the header H2, respectively. The V+ pin of the IM1253E chip 2 is connected to the power supply circuit of the shunt resistor voltage sensor. The V- / L pin of the IM1253E chip 2 is connected to the digital ground DGND2. The I- pin of the IM1253E chip 2 is connected to pin 1 of the current terminal P4 of the gun 2. The I+ pin of the IM1253E chip 2 is connected to pin 2 of the current terminal P4 of the gun 2. The N pin of the IM1253E chip 2 is connected to pin 1 of the voltage terminal P5 of the gun 2. Pin 2 of the terminal P5 is connected to the digital ground DGND2.

[0068] The VCC1 pin of chip U14 is connected to the shunt resistor voltage sensor power supply module, the GND1 pin of chip U14 is connected to the digital ground DGND2, the VCC2 pin of chip U14 is connected to the controller, the INA pin of chip U14 is connected to the controller, the OUTB pin of chip U14 is connected to the controller, the GND2 pin of chip U14 is connected to the digital ground DGND4, one end of capacitor C28 is connected to the shunt resistor voltage sensor power supply module, the other end of capacitor C28 is connected to the digital ground DGND2, one end of capacitor C29 is connected to the controller, and the other end of capacitor C29 is connected to the digital ground DGND4.

[0069] This embodiment 3, based on embodiment 1, presents a more optimized structure for the shunt resistor voltage sensor. The IM1253E chip is a single-phase AC / DC power metering module capable of measuring multiple power parameters such as voltage, current, active power, energy, and temperature, meeting various power monitoring needs. It also features power-loss protection for power data, ensuring data security and reliability. The ISO7221CDR chip is a digital isolator, primarily providing high-voltage isolation in the circuit while simultaneously enabling digital signal transmission. The combination of the IM1253E and ISO7221CDR chips allows the shunt resistor voltage sensor to accurately and rapidly transmit the acquired shunt resistor voltage signal to the controller.

[0070] Example 4

[0071] like Figure 1-8As shown, an online charging pile detection system based on big data includes:

[0072] Output voltage sensor, shunt resistor voltage sensor, shunt resistor temperature sensor, charging pile meter, controller;

[0073] The output voltage sensor has its input terminal connected in parallel to the output port of the charging gun, and its output terminal connected to the controller.

[0074] The shunt resistor voltage sensor has its input terminal connected in parallel with the shunt resistor of the charging pile, and its output terminal connected to the controller.

[0075] The shunt resistor temperature sensor has its input terminal set on the surface of the shunt resistor and its output terminal connected to the controller.

[0076] The charging station's electricity meter is connected to the controller;

[0077] The controller's input terminals are connected to the output voltage sensor, shunt resistor voltage sensor, shunt resistor temperature sensor, and charging pile meter, while its output terminal is connected to the server.

[0078] The charging pile meter is connected to the controller via an RS485 communication module. The RS485 communication module includes: an ISO3082DWR chip U17; the VCC2 pin of chip U17 is connected to the power supply circuit of the RS485 communication module; one end of capacitor C36 is connected to the VCC2 pin, and the other end of capacitor C36 is connected to the ground terminal G5VA; the GND2 pin of U17 is connected to the ground terminal G5VA; one end of resistors R17, R18, and R19, and one end of capacitor C37 are connected to pin B of U17; the other end of resistor R17 is connected to the power supply circuit of the RS485 communication module; the other end of resistor R19, one end of resistor R21, R20, and one end of capacitor C39 are connected to pin A of U17; the other end of resistor R21 is connected to the ground terminal G5VA; and the other end of capacitor C37... The other end of capacitor C39 is connected to ground terminal G5VA. The other end of resistor R20 is connected to pin 2 of ESD protection diode Q1 and pin 2 of terminal P6 respectively. The other end of resistor R18 is connected to pin 1 of ESD protection diode and pin 1 of terminal P6 respectively. Pin 3 of ESD protection diode is connected to ground terminal G5VA. Pin GND2 of U17 is connected to ground terminal G5VA. One end of capacitor C38 is connected to pin VCC1 of U17. The other end of capacitor C38 is connected to pin GND1 of U17. Pin VCC1 of U17 is connected to the controller. Pin GND1 of U17 is connected to digital ground DGND4. Pin R of U17 is connected to the controller. Pins RE and DE of U17 are connected to the controller. Pin D of U17 is connected to the controller.

[0079] Based on Example 1, Example 4 provides a more preferred communication structure between the charging pile meter and the controller. This communication structure is an RS485 communication module, which has the advantages of high speed, strong anti-interference ability, and long transmission distance.

[0080] Example 5

[0081] like Figure 1-8 As shown, an online charging pile detection system based on big data includes:

[0082] Output voltage sensor, shunt resistor voltage sensor, shunt resistor temperature sensor, charging pile meter, controller;

[0083] The output voltage sensor has its input terminal connected in parallel to the output port of the charging gun, and its output terminal connected to the controller.

[0084] The shunt resistor voltage sensor has its input terminal connected in parallel with the shunt resistor of the charging pile, and its output terminal connected to the controller.

[0085] The shunt resistor temperature sensor has its input terminal set on the surface of the shunt resistor and its output terminal connected to the controller.

[0086] The charging station's electricity meter is connected to the controller;

[0087] The controller's input terminals are connected to the output voltage sensor, shunt resistor voltage sensor, shunt resistor temperature sensor, and charging pile meter, while its output terminal is connected to the server.

[0088] The output voltage sensor circuit is as follows: the RX pin of IM1253E chip 1 is connected to one end of resistor R1, and the other end of resistor R1 is connected to the OUTA pin of ISO7221CDR chip U9. The TX pin of voltage sensor A is connected to one end of resistor R3, and the other end of resistor R3 is connected to the INB pin of U9. The PF pin of IM1253E chip 1 is connected to one end of resistor R5, and the other end of resistor R5 is connected to the positive terminal of the LED in optocoupler U12. The negative terminal of the LED is connected to the digital ground line DGND1. The NPN photosensitive element in U12... The emitter and collector of the transistor are connected to pin 1 and pin 2 of the header H1, respectively. The V+ pin of the IM1253E chip 1 is connected to the power supply module of the output voltage sensor. The V- / L pin of the IM1253E chip 1 is connected to the digital ground DGND1. The I- pin of the IM1253E chip 1 is connected to pin 1 of the terminal P2 for the current of gun 1. The I+ pin is connected to pin 2 of the terminal P2. The N pin of the IM1253E chip 1 is connected to pin 1 of the terminal P3 for the voltage of gun 1. The pin 2 of the terminal P3 is connected to the digital ground DGND1.

[0089] The VCC1 pin of U9 is connected to the power supply module of the output voltage sensor, the GND1 pin of U9 is connected to the digital ground DGND1, the VCC2 pin of U9 is connected to the controller, the INA pin of U9 is connected to the controller, the OUTB pin of U9 is connected to the controller, the GND2 pin of U9 is connected to the digital ground DGND4, one end of capacitor C23 is connected to the power supply module of the output voltage sensor, the other end of capacitor C23 is connected to the digital ground DGND1, one end of capacitor C24 is connected to the controller, and the other end of capacitor C24 is connected to the digital ground DGND4.

[0090] The specific circuit of the output voltage sensor power supply module is as follows: The VIN pin of the B2412S-2WR2 chip U1 is connected to one end of inductor L1 and the positive terminal of polarized capacitor C2. The other end of inductor L1 is connected to the negative terminal of surface-mount Schottky diode D1 and the positive terminal of polarized capacitor C1, and connected to a 24V power supply. The positive terminal of surface-mount Schottky diode D1 and the negative terminal of transient suppression diode TVS1 are connected to pin 1 of terminal P1. The GND pin of U1 is connected to the negative terminals of polarized capacitor C2 and C1, the positive terminal of transient suppression diode TVS1, ground GND, and pin 2 of terminal P1. The negative terminal of polarized capacitor C9 is connected to digital ground DGND1 and the -Vo pin of U1. The positive terminal of polarized capacitor C9 is connected to the +Vo pin of U1. The +Vo pin of U1 is connected to the Vin pin of AMS1117-5.0 chip U4 and the positive terminal of polarized capacitor C14.

[0091] The Vout pin of chip U4 is connected to the VCC1 pin of U9, the V+ pin of IM1253E chip 1, one end of capacitor C23, and the positive terminal of polarized capacitor C13. The I pin of U4, the negative terminal of polarized capacitor C14, and the negative terminal of polarized capacitor C13 are connected to the digital ground line DGND1.

[0092] Based on Example 2, Example 5 provides a more preferred structure for the output voltage sensor power supply module. The output voltage sensor power supply module consists of a B2412S-2WR2 chip U1 connected to its peripheral circuit and an AMS1117-5.0 chip U4 connected to its peripheral circuit. This design ensures that the output voltage sensor power supply module provides a stable and reliable power supply voltage.

[0093] Example 6

[0094] like Figure 1-8 As shown, an online charging pile detection system based on big data includes:

[0095] Output voltage sensor, shunt resistor voltage sensor, shunt resistor temperature sensor, charging pile meter, controller;

[0096] The output voltage sensor has its input terminal connected in parallel to the output port of the charging gun, and its output terminal connected to the controller.

[0097] The shunt resistor voltage sensor has its input terminal connected in parallel with the shunt resistor of the charging pile, and its output terminal connected to the controller.

[0098] The shunt resistor temperature sensor has its input terminal set on the surface of the shunt resistor and its output terminal connected to the controller.

[0099] The charging station's electricity meter is connected to the controller;

[0100] The controller's input terminals are connected to the output voltage sensor, shunt resistor voltage sensor, shunt resistor temperature sensor, and charging pile meter, while its output terminal is connected to the server.

[0101] The circuit of the shunt resistor voltage sensor is as follows: the RX pin of IM1253E chip 2 is connected to one end of resistor R15, the other end of resistor R15 is connected to the OUTA pin of ISO7221CDR chip U14, the TX pin of IM1253E chip 2 is connected to one end of resistor R12, the other end of resistor R12 is connected to the INB pin of chip U14, the PF pin of IM1253E chip 2 is connected to one end of resistor R14, the other end of resistor R14 is connected to the positive terminal of the LED in optocoupler U15, the negative terminal of the LED is connected to the digital ground line DGND1, and the LED in optocoupler U15... The emitter and collector of the phototransistor are connected to pin 1 and pin 2 of the header H2, respectively. The V+ pin of the IM1253E chip 2 is connected to the power supply circuit of the shunt resistor voltage sensor. The V- / L pin of the IM1253E chip 2 is connected to the digital ground DGND2. The I- pin of the IM1253E chip 2 is connected to pin 1 of the current terminal P4 of the gun 2. The I+ pin of the IM1253E chip 2 is connected to pin 2 of the current terminal P4 of the gun 2. The N pin of the IM1253E chip 2 is connected to pin 1 of the voltage terminal P5 of the gun 2. Pin 2 of the terminal P5 is connected to the digital ground DGND2.

[0102] The VCC1 pin of chip U14 is connected to the shunt resistor voltage sensor power supply module, the GND1 pin of chip U14 is connected to the digital ground DGND2, the VCC2 pin of chip U14 is connected to the controller, the INA pin of chip U14 is connected to the controller, the OUTB pin of chip U14 is connected to the controller, the GND2 pin of chip U14 is connected to the digital ground DGND4, one end of capacitor C28 is connected to the shunt resistor voltage sensor power supply module, the other end of capacitor C28 is connected to the digital ground DGND2, one end of capacitor C29 is connected to the controller, and the other end of capacitor C29 is connected to the digital ground DGND4.

[0103] The shunt resistor voltage sensor power supply module is specifically configured as follows: The VIN pin of the B2412S-2WR2 chip U2 is connected to one end of inductor L2 and one end of capacitor C4. The other end of inductor L2 is connected to the positive terminal of polarized capacitor C3 and the 24V power supply. The GND pin of U2 is connected to the negative terminals of polarized capacitors C4 and C3 respectively. The negative terminal of polarized capacitor C3 is connected to the ground terminal GND. The negative terminal of polarized capacitor C10 is connected to the digital ground DGND2 and the -Vo pin of U2 respectively. The positive terminal of capacitor C10 is connected to the +Vo pin of U2; the +Vo pin of U2 is connected to the Vin pin of AMS1117-5.0 chip U5 and the positive terminal of polarized capacitor C17; the Vout pin of U5 is connected to the V+ pin of IM1253E chip 2, the VCC1 pin of U14, one end of capacitor C28, and the positive terminal of polarized capacitor C15; the I pin of U5, the negative terminal of polarized capacitor C17, and the negative terminal of polarized capacitor C15 are connected to the digital ground line DGND2.

[0104] Based on Example 3, this embodiment 6 provides a more preferred structure for the shunt resistor voltage sensor power supply module. The shunt resistor voltage sensor power supply module is composed of a B2412S-2WR2 chip U2 and its peripheral circuits, and an AMS1117-5.0 chip U5 and its peripheral circuits connected together. This design can ensure that the shunt resistor voltage sensor power supply module provides a stable and reliable power supply voltage.

[0105] Example 7

[0106] like Figure 1-8 As shown, an online charging pile detection system based on big data includes:

[0107] Output voltage sensor, shunt resistor voltage sensor, shunt resistor temperature sensor, charging pile meter, controller;

[0108] The output voltage sensor has its input terminal connected in parallel to the output port of the charging gun, and its output terminal connected to the controller.

[0109] The shunt resistor voltage sensor has its input terminal connected in parallel with the shunt resistor of the charging pile, and its output terminal connected to the controller.

[0110] The shunt resistor temperature sensor has its input terminal set on the surface of the shunt resistor and its output terminal connected to the controller.

[0111] The charging station's electricity meter is connected to the controller;

[0112] The controller's input terminals are connected to the output voltage sensor, shunt resistor voltage sensor, shunt resistor temperature sensor, and charging pile meter, while its output terminal is connected to the server.

[0113] The charging pile meter is connected to the controller via an RS485 communication module. The RS485 communication module includes: an ISO3082DWR chip U17; the VCC2 pin of chip U17 is connected to the power supply circuit of the RS485 communication module; one end of capacitor C36 is connected to the VCC2 pin, and the other end of capacitor C36 is connected to the ground terminal G5VA; the GND2 pin of U17 is connected to the ground terminal G5VA; one end of resistors R17, R18, and R19, and one end of capacitor C37 are connected to pin B of U17; the other end of resistor R17 is connected to the power supply circuit of the RS485 communication module; the other end of resistor R19, one end of resistor R21, R20, and one end of capacitor C39 are connected to pin A of U17; the other end of resistor R21 is connected to the ground terminal G5VA; and the other end of capacitor C37... The other end of capacitor C39 is connected to ground terminal G5VA. The other end of resistor R20 is connected to pin 2 of ESD protection diode Q1 and pin 2 of terminal P6 respectively. The other end of resistor R18 is connected to pin 1 of ESD protection diode and pin 1 of terminal P6 respectively. Pin 3 of ESD protection diode is connected to ground terminal G5VA. Pin GND2 of U17 is connected to ground terminal G5VA. One end of capacitor C38 is connected to pin VCC1 of U17. The other end of capacitor C38 is connected to pin GND1 of U17. Pin VCC1 of U17 is connected to the controller. Pin GND1 of U17 is connected to digital ground DGND4. Pin R of U17 is connected to the controller. Pins RE and DE of U17 are connected to the controller. Pin D of U17 is connected to the controller.

[0114] The power supply circuit for the RS485 communication module is as follows: The VIN pin of the B2412S-2WR2 chip U7 is connected to one end of the inductor L4 and the positive terminal of the polarized capacitor C8. The other end of the inductor L4 is connected to the positive terminal of the polarized capacitor C7 and the 24V power supply. The GND pin of U7 is connected to the negative terminals of the polarized capacitors C8 and C7, as well as the ground terminal GND. The negative terminal of the polarized capacitor C12 is connected to the ground G5VA and the -Vo pin of U7. The positive terminal of the polarized capacitor C12 is connected to the other end of R17, the VCC2 pin of U17, and the +Vo pin of U7.

[0115] Based on Example 4, Example 7 presents a more preferred structure for the power supply circuit of the RS485 communication module. The power supply circuit of the RS485 communication module consists of the B2412S-2WR2 chip U7 and its peripheral circuit. The B2412S-2WR2 chip has excellent performance and stability, which enables the power supply circuit of the RS485 communication module to provide a stable and reliable power supply voltage.

[0116] Example 8

[0117] like Figure 1-8As shown, an online charging pile detection system based on big data includes:

[0118] Output voltage sensor, shunt resistor voltage sensor, shunt resistor temperature sensor, charging pile meter, controller;

[0119] The output voltage sensor has its input terminal connected in parallel to the output port of the charging gun, and its output terminal connected to the controller.

[0120] The shunt resistor voltage sensor has its input terminal connected in parallel with the shunt resistor of the charging pile, and its output terminal connected to the controller.

[0121] The shunt resistor temperature sensor has its input terminal set on the surface of the shunt resistor and its output terminal connected to the controller.

[0122] The charging station's electricity meter is connected to the controller;

[0123] The controller's input terminals are connected to the output voltage sensor, shunt resistor voltage sensor, shunt resistor temperature sensor, and charging pile meter, while its output terminal is connected to the server.

[0124] The controller uses an STM32F103RCT6 chip.

[0125] This embodiment 8 provides a more preferred chip for the controller based on embodiment 1. The STM32F103RCT6 chip has a high-performance ARM core, abundant peripheral resources, flexible power management functions and a complete development support system.

[0126] Example 9

[0127] like Figure 1-8 As shown, an online charging pile detection system based on big data includes:

[0128] Output voltage sensor, shunt resistor voltage sensor, shunt resistor temperature sensor, charging pile meter, controller;

[0129] The output voltage sensor has its input terminal connected in parallel to the output port of the charging gun, and its output terminal connected to the controller.

[0130] The shunt resistor voltage sensor has its input terminal connected in parallel with the shunt resistor of the charging pile, and its output terminal connected to the controller.

[0131] The shunt resistor temperature sensor has its input terminal set on the surface of the shunt resistor and its output terminal connected to the controller.

[0132] The charging station's electricity meter is connected to the controller;

[0133] The controller's input terminals are connected to the output voltage sensor, shunt resistor voltage sensor, shunt resistor temperature sensor, and charging pile meter, while its output terminal is connected to the server.

[0134] The controller connects to the server via Ethernet or a 4G / 5G network.

[0135] This embodiment 9, based on embodiment 1, provides a connection method between the controller and the server, which is through Ethernet or 4G / 5G network to facilitate data interaction between the controller and the server.

[0136] The charging pile meter, shunt resistor temperature sensor, IM1253E chip, ISO7221CDR chip, ISO3082DWR chip, B2412S-2WR2 chip, AMS1117-5.0 chip, and STM32F103RCT6 chip used in this utility model are all existing known electrical devices, and all can be directly purchased and used on the market. Their structure, circuit, and control principle are all existing known technologies. Therefore, the structure, circuit, and control principle of the charging pile meter, shunt resistor temperature sensor, IM1253E chip, ISO7221CDR chip, ISO3082DWR chip, B2412S-2WR2 chip, AMS1117-5.0 chip, and STM32F103RCT6 chip will not be described in detail here.

[0137] Finally, it should be noted that the above embodiments are merely preferred embodiments of this utility model used to illustrate the technical solutions of this utility model, and are not intended to limit it, nor are they intended to limit the patent scope of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model. That is to say, any changes or refinements made to the main design concept and spirit of this utility model that are not of substantial significance, but whose technical problems are still consistent with those of this utility model, should be included within the protection scope of this utility model. In addition, the direct or indirect application of the technical solutions of this utility model to other related technical fields are similarly included within the patent protection scope of this utility model.

Claims

1. A charging pile online detection system based on big data, characterized in that, include: Output voltage sensor, shunt resistor voltage sensor, shunt resistor temperature sensor, charging pile meter, controller; The output voltage sensor has its input terminal connected in parallel to the output port of the charging gun, and its output terminal connected to the controller. The shunt resistor voltage sensor has its input terminal connected in parallel with the shunt resistor of the charging pile, and its output terminal connected to the controller. The shunt resistor temperature sensor has its input terminal set on the surface of the shunt resistor and its output terminal connected to the controller. The charging station's electricity meter is connected to the controller; The controller's input terminals are connected to the output voltage sensor, shunt resistor voltage sensor, shunt resistor temperature sensor, and charging pile meter, while its output terminal is connected to the server.

2. The online charging pile detection system based on big data according to claim 1, characterized in that, The output voltage sensor circuit is as follows: the RX pin of IM1253E chip 1 is connected to one end of resistor R1, and the other end of resistor R1 is connected to the OUTA pin of ISO7221CDR chip U9. The TX pin of voltage sensor A is connected to one end of resistor R3, and the other end of resistor R3 is connected to the INB pin of U9. The PF pin of IM1253E chip 1 is connected to one end of resistor R5, and the other end of resistor R5 is connected to the positive terminal of the LED in optocoupler U12. The negative terminal of the LED is connected to the digital ground line DGND1. The NPN photosensitive element in U12... The emitter and collector of the transistor are connected to pin 1 and pin 2 of the header H1, respectively. The V+ pin of the IM1253E chip 1 is connected to the power supply module of the output voltage sensor. The V- / L pin of the IM1253E chip 1 is connected to the digital ground DGND1. The I- pin of the IM1253E chip 1 is connected to pin 1 of the terminal P2 for the current of gun 1. The I+ pin is connected to pin 2 of the terminal P2. The N pin of the IM1253E chip 1 is connected to pin 1 of the terminal P3 for the voltage of gun 1. The pin 2 of the terminal P3 is connected to the digital ground DGND1. The VCC1 pin of U9 is connected to the power supply module of the output voltage sensor, the GND1 pin of U9 is connected to the digital ground DGND1, the VCC2 pin of U9 is connected to the controller, the INA pin of U9 is connected to the controller, the OUTB pin of U9 is connected to the controller, the GND2 pin of U9 is connected to the digital ground DGND4, one end of capacitor C23 is connected to the power supply module of the output voltage sensor, the other end of capacitor C23 is connected to the digital ground DGND1, one end of capacitor C24 is connected to the controller, and the other end of capacitor C24 is connected to the digital ground DGND4.

3. The online charging pile detection system based on big data according to claim 1, characterized in that, The circuit of the shunt resistor voltage sensor is as follows: the RX pin of IM1253E chip 2 is connected to one end of resistor R15, the other end of resistor R15 is connected to the OUTA pin of ISO7221CDR chip U14, the TX pin of IM1253E chip 2 is connected to one end of resistor R12, the other end of resistor R12 is connected to the INB pin of chip U14, the PF pin of IM1253E chip 2 is connected to one end of resistor R14, the other end of resistor R14 is connected to the positive terminal of the LED in optocoupler U15, the negative terminal of the LED is connected to the digital ground line DGND1, and the LED in optocoupler U15... The emitter and collector of the phototransistor are connected to pin 1 and pin 2 of the header H2, respectively. The V+ pin of the IM1253E chip 2 is connected to the power supply circuit of the shunt resistor voltage sensor. The V- / L pin of the IM1253E chip 2 is connected to the digital ground DGND2. The I- pin of the IM1253E chip 2 is connected to pin 1 of the current terminal P4 of the gun 2. The I+ pin of the IM1253E chip 2 is connected to pin 2 of the current terminal P4 of the gun 2. The N pin of the IM1253E chip 2 is connected to pin 1 of the voltage terminal P5 of the gun 2. Pin 2 of the terminal P5 is connected to the digital ground DGND2. The VCC1 pin of chip U14 is connected to the shunt resistor voltage sensor power supply module, the GND1 pin of chip U14 is connected to the digital ground DGND2, the VCC2 pin of chip U14 is connected to the controller, the INA pin of chip U14 is connected to the controller, the OUTB pin of chip U14 is connected to the controller, the GND2 pin of chip U14 is connected to the digital ground DGND4, one end of capacitor C28 is connected to the shunt resistor voltage sensor power supply module, the other end of capacitor C28 is connected to the digital ground DGND2, one end of capacitor C29 is connected to the controller, and the other end of capacitor C29 is connected to the digital ground DGND4.

4. The online charging pile detection system based on big data according to claim 1, characterized in that, The charging pile meter is connected to the controller via an RS485 communication module. The RS485 communication module includes: an ISO3082DWR chip U17; the VCC2 pin of chip U17 is connected to the power supply circuit of the RS485 communication module; one end of capacitor C36 is connected to the VCC2 pin, and the other end of capacitor C36 is connected to the ground terminal G5VA; the GND2 pin of U17 is connected to the ground terminal G5VA; one end of resistors R17, R18, and R19, and one end of capacitor C37 are connected to pin B of U17; the other end of resistor R17 is connected to the power supply circuit of the RS485 communication module; the other end of resistor R19, one end of resistor R21, R20, and one end of capacitor C39 are connected to pin A of U17; the other end of resistor R21 is connected to the ground terminal G5VA; and the other end of capacitor C37... The other end of capacitor C39 is connected to ground terminal G5VA. The other end of resistor R20 is connected to pin 2 of ESD protection diode Q1 and pin 2 of terminal P6 respectively. The other end of resistor R18 is connected to pin 1 of ESD protection diode and pin 1 of terminal P6 respectively. Pin 3 of ESD protection diode is connected to ground terminal G5VA. Pin GND2 of U17 is connected to ground terminal G5VA. One end of capacitor C38 is connected to pin VCC1 of U17. The other end of capacitor C38 is connected to pin GND1 of U17. Pin VCC1 of U17 is connected to the controller. Pin GND1 of U17 is connected to digital ground DGND4. Pin R of U17 is connected to the controller. Pins RE and DE of U17 are connected to the controller. Pin D of U17 is connected to the controller.

5. The online charging pile detection system based on big data according to claim 2, characterized in that, The specific circuit of the output voltage sensor power supply module is as follows: The VIN pin of the B2412S-2WR2 chip U1 is connected to one end of inductor L1 and the positive terminal of polarized capacitor C2. The other end of inductor L1 is connected to the negative terminal of surface-mount Schottky diode D1 and the positive terminal of polarized capacitor C1, and connected to a 24V power supply. The positive terminal of surface-mount Schottky diode D1 and the negative terminal of transient voltage suppressor diode TVS1 are connected to pin 1 of terminal P1. The GND pin of U1 is connected to the negative terminals of polarized capacitor C2 and C1, the positive terminal of transient voltage suppressor diode TVS1, the ground terminal GND, and pin 2 of terminal P1. The negative terminal of polarized capacitor C9 is connected to digital ground DGND1 and the -Vo pin of U1, respectively. The positive terminal of polarized capacitor C9 is connected to the +Vo pin of U1. The +Vo pin of U1 is connected to the Vin pin of AMS1117-5.0 chip U4 and the positive terminal of polarized capacitor C14, respectively. The Vout pin of chip U4 is connected to the VCC1 pin of U9, the V+ pin of IM1253E chip 1, one end of capacitor C23, and the positive terminal of polarized capacitor C13, respectively. The I pin of U4, the negative terminals of polarized capacitor C14 and C13 are connected to digital ground DGND1, respectively.

6. The online charging pile detection system based on big data according to claim 3, characterized in that, The shunt resistor voltage sensor power supply module is specifically configured as follows: The VIN pin of the B2412S-2WR2 chip U2 is connected to one end of inductor L2 and one end of capacitor C4. The other end of inductor L2 is connected to the positive terminal of polarized capacitor C3 and the 24V power supply. The GND pin of U2 is connected to the negative terminals of polarized capacitors C4 and C3 respectively. The negative terminal of polarized capacitor C3 is connected to the ground terminal GND. The negative terminal of polarized capacitor C10 is connected to the digital ground DGND2 and the -Vo pin of U2 respectively. The positive terminal of capacitor C10 is connected to the +Vo pin of U2; the +Vo pin of U2 is connected to the Vin pin of AMS1117-5.0 chip U5 and the positive terminal of polarized capacitor C17; the Vout pin of U5 is connected to the V+ pin of IM1253E chip 2, the VCC1 pin of U14, one end of capacitor C28, and the positive terminal of polarized capacitor C15; the I pin of U5, the negative terminal of polarized capacitor C17, and the negative terminal of polarized capacitor C15 are connected to the digital ground line DGND2.

7. The online charging pile detection system based on big data according to claim 4, characterized in that, The power supply circuit for the RS485 communication module is as follows: The VIN pin of the B2412S-2WR2 chip U7 is connected to one end of the inductor L4 and the positive terminal of the polarized capacitor C8. The other end of the inductor L4 is connected to the positive terminal of the polarized capacitor C7 and the 24V power supply. The GND pin of U7 is connected to the negative terminals of the polarized capacitors C8 and C7, as well as the ground terminal GND. The negative terminal of the polarized capacitor C12 is connected to the ground G5VA and the -Vo pin of U7. The positive terminal of the polarized capacitor C12 is connected to the other end of R17, the VCC2 pin of U17, and the +Vo pin of U7.

8. The online detection system for charging piles based on big data according to claim 1, characterized in that, The controller uses an STM32F103RCT6 chip.

9. The online detection system for charging piles based on big data according to claim 1, characterized in that, The controller connects to the server via Ethernet or a 4G / 5G network.

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