Charging pile control system architecture

Abstract

The utility model discloses a charging pile control system architecture, which comprises a core control module, an HMI (Human Machine Interface) and a charging module, the charging module is connected with the input of alternating current through a pre-stage rectifying and filtering unit, the pre-stage rectifying and filtering unit is connected with an insulated gate bipolar transistor, the insulated gate bipolar transistor is connected with a high-frequency transformer, and the high-frequency transformer is connected with a power supply. The high-frequency transformer is connected with the electric vehicle through a post-stage rectifying and filtering unit; the sampling and transmitting module is responsible for completing voltage, current and temperature sampling and signal conversion through a sampling and transmitting unit connected to the output end of the rear-stage rectifying and filtering unit, converting sampled parameters into signals and transmitting the signals to the core control module for comparison and judgment; and the protection module comprises a protection circuit connected to the core control module. According to the system architecture, through the clear and simple design, efficient operation and comprehensive protection measures, the efficiency, safety and user experience of electric vehicle charging are remarkably improved, and the current requirements for charging pile technology development are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric automobile direct current charging control system especially, relates to a charging pile control system architecture. BACKGROUND

[0002] In prior art, the design of charging pile control system is usually more complex, needs to use a large number of hardware equipment and circuit, and the control process is more cumbersome, and lacks flexibility, cannot adapt to the development of charging pile technology. Also directly lead to the processing of current not enough refinement, lead to the current of electric automobile charging not enough stable, simultaneously, the protection circuit design of existing charging pile generally lacks effective detection protection mechanism to promote charging safety, cannot effectively protect charging pile from the influence of external environment. Therefore, lack a more clear, simple charging pile control system architecture, to realize the refinement of current, and provide detection protection mechanism in many aspects, to guarantee charging safety and stability. UTILITY MODEL CONTENT

[0003] In order to solve the above technical problems, the utility model provides a charging pile control system architecture.

[0004] In order to solve above technical problem, the utility model adopts the technical scheme of a charging pile control system architecture, comprising:

[0005] Core control module controls the coordination work between different modules on direct current charging pile;

[0006] HMI man-machine interface is connected to core control module through CAN bus, and the communication and data exchange of other modules are realized through man-machine interaction;

[0007] Charging module is connected to the input of alternating current through the front-stage rectification filter unit, the front-stage rectification filter unit is connected to the insulated gate bipolar transistor, the insulated gate bipolar transistor is connected to the high-frequency transformer, the high-frequency transformer is connected to the electric automobile through the rear-stage rectification filter unit, and the core control module controls the charging of the electric automobile by connecting the insulated gate bipolar transistor through the drive circuit according to the data signal input from the HMI man-machine interface;

[0008] Sampling and transmitting module is responsible for voltage, current, temperature sampling and signal conversion through the sampling and transmitting unit connected to the output end of the rear-stage rectification filter unit, and the parameters after sampling are converted into signals and transmitted to the core control module for comparison and judgment;

[0009] Protection module includes the protection circuit connected on core control module.

[0010] Further, the HMI human-machine interface includes a touch screen and buttons for inputting information to the core control module to control the DC charging pile to charge the electric vehicle, and the touch screen is connected to the core control module through a CAN bus to display the working state of the DC charging pile in real time.

[0011] Further, the protection circuit includes circuit units for output overvoltage, overcurrent, short circuit protection, input overvoltage, under-voltage protection, and over-temperature protection of the charging pile control system.

[0012] Further, the sampling and transmission module includes a digital-to-analog converter, a voltage sampling unit, a current sampling unit, and a temperature sampling unit.

[0013] The utility model discloses a kind of charging pile control system of charging pile control system architecture, by using simple core control module, intuitive human-computer interaction interface, efficient charging module, real-time sampling and transmission module and comprehensive protection module, solve the current charging pile control system complex, lack of flexibility and the current processing problem of fine current. At the same time, by providing a variety of detection protection mechanisms, the charging safety is improved. By using the control board with ARM as the core, the system architecture is simplified, the use of hardware devices and circuits is reduced, and the complexity of the system is reduced; The introduction of HMI human-machine interface enables users to more intuitively operate and monitor the charging pile, improving the operation convenience and user experience; The optimization of the charging module ensures the efficiency of electric vehicle charging, and the core control module can finely adjust the charging current to ensure the smoothness of the charging process; The protection module provides comprehensive protection measures, including output overvoltage, overcurrent, short circuit, input overvoltage, under-voltage protection and over-temperature protection, to ensure the safety of the charging pile and the user; The sampling and transmission module monitors the key parameters in the charging process in real time, and the core control module processes and judges according to these data to ensure the safety and reliability of the charging process; Each component of the system is carefully designed to work stably under various operating conditions, improving the reliability and stability of the system; The use of CAN bus communication improves the real-time performance and reliability between each module of the system, making the exchange of information more efficient. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The system structure diagram of the utility model. DETAILED DESCRIPTION

[0015] The utility model will be further explained in detail in combination with the drawings and specific embodiments.

[0016] The present application relates to a kind of charging pile control system architecture, which is designed for DC charging pile to realize efficient, safe and user-friendly electric vehicle charging, such as Figure 1 As shown, comprising:

[0017] Core control module: This module serves as the core of the control system, mainly composed of a control board with ARM as the core, and the core control chip is STM32F103ZET6. The main function of the core control module is to coordinate the work of different modules in the DC charging pile and realize the information transmission of human-computer interaction. It receives and transmits the instructions input by the HMI human-computer interface, controls the charging pile to charge the electric vehicle, and ensures the smooth progress of the whole charging process.

[0018] HMI human-computer interface: This interface includes touch screen and buttons, users can input charging information through touch screen and monitor the working status of charging pile. HMI human-computer interface is connected with core control module through CAN bus interface, realizing real-time data exchange and instruction transmission. This design improves the convenience of operation and allows users to intuitively understand the running status of charging pile. HMI human-computer interface includes touch screen, buttons, which input information to core control module to make it issue instructions to control DC charging pile to charge electric vehicle. Touch screen is connected with core control module through CAN bus to display the working status of DC charging pile in real time.

[0019] Charging module: This module is responsible for converting AC power into DC power suitable for charging electric vehicles. It includes a front-stage rectification filter unit, an insulated gate bipolar transistor (IGBT), a high-frequency transformer, and a rear-stage rectification filter unit. The core control module controls the IGBT through the drive circuit, and then adjusts the charging current for the electric vehicle.

[0020] Sampling and transmission module: This module is responsible for real-time monitoring of the voltage, current and temperature of the output of the charging pile, and converting these physical quantities into electrical signals for transmission to the core control module for processing and judgment. This ensures that the system continuously monitors key parameters during the charging process to ensure the safety and reliability of the charging process. The sampling and transmission module includes a digital-to-analog converter, a voltage sampling unit, a current sampling unit, and a temperature sampling unit. The digital-to-analog converter (DAC) is a device that converts digital signals into analog signals. The voltage sampling unit is responsible for collecting the working voltage of the charging pile and converting it into an electrical signal for transmission to the core control module for processing and judgment. The voltage sampling unit includes a voltage sensor and a signal conditioning circuit, which is used to monitor the input and output voltage of the charging pile in real time. The current sampling unit is responsible for collecting the working current of the charging pile and converting it into an electrical signal for transmission to the core control module for processing and judgment. Current sampling is usually achieved through current transformers or Hall effect sensors to ensure accurate measurement of charging current. The temperature sampling unit is responsible for collecting the temperature of the key components of the charging pile (such as IGBT, transformer, etc.) and converting it into an electrical signal for transmission to the core control module for processing and judgment. The temperature sampling unit usually includes a temperature sensor and a signal conditioning circuit, which is used to monitor the working temperature of the charging pile in real time.

[0021] The protection module includes various protection circuits for implementing output overvoltage, overcurrent, short circuit, input overvoltage, undervoltage and over-temperature protection. The protection circuit monitors the system state in real time and compares it with the set safety threshold. Once an anomaly is detected, the protection action is triggered to protect the charging pile and its users. The protection circuit includes circuit units for output overvoltage, overcurrent protection, short circuit protection, input overvoltage, undervoltage protection and over-temperature protection of the charging pile control system. The output overvoltage and overcurrent protection circuit includes an overvoltage protector and an overcurrent protector. When the output voltage or current of the charging pile exceeds the set threshold, the overvoltage protector triggers the protection action and transmits an abnormal signal to the core control module, thereby shutting down the charging module. The overcurrent protector triggers the protection action when the current exceeds the set threshold to avoid damaging the components in the charging module.

[0022] The short circuit protection circuit monitors the short circuit condition by detecting the resistance of the input and output circuits of the charging pile. When a short circuit is detected, the short circuit protector triggers the protection action and transmits an abnormal signal to the core control module, thereby shutting down the charging module. The input overvoltage and undervoltage protection circuit is used to monitor whether the input voltage of the charging pile is within the safe range. When the input voltage exceeds or is lower than the set threshold, the protection circuit triggers the protection action, shuts down the charging module and prompts the user to repair. The over-temperature protection circuit detects the working temperature of the key components of the charging pile, such as IGBT, transformer, etc. When the temperature exceeds the set threshold, the protection action is triggered, the charging module is shut down and the user is prompted to repair. The over-temperature protection circuit usually includes a temperature sensor, a signal conditioning circuit and a driving circuit.

[0023] In summary, the charging pile control system of the present application, through the close cooperation of the above-mentioned modules, not only realizes the efficiency and safety of the charging process, but also improves the user experience. By using CAN bus communication, the real-time performance and reliability of the system are improved. The core control module is the control center of the entire system, responsible for coordinating the work of each module. The sampling and transmission module is responsible for collecting and processing related parameters. The communication and display operation module is responsible for user interaction and information transmission. The charging module is responsible for specific charging operations, and the protection module is responsible for protecting the charging process. At the same time, each component of the system is carefully designed to ensure stable operation under various operating conditions.

[0024] The above embodiments are not a limitation of the present application, and the present application is not limited to the above examples. Changes, modifications, additions or replacements made by those skilled in the art within the technical solution of the present application also belong to the protection scope of the present application.

Claims

1. A charging pile control system architecture, characterized in that, The application relates to a direct-current charging pile control system. The core control module controls the coordination work among different modules of the direct-current charging pile. The HMI man-machine interface is connected to the core control module through a CAN bus, and realizes the communication and data exchange of other modules through man-machine interaction. The charging module is connected to the input of alternating current through a pre-stage rectification filter unit, the pre-stage rectification filter unit is connected to an insulated gate bipolar transistor, the insulated gate bipolar transistor is connected to a high-frequency transformer, the high-frequency transformer is connected to an electric vehicle through a post-stage rectification filter unit, and the core control module controls the charging of the electric vehicle through a driving circuit connected to the insulated gate bipolar transistor according to the data signal input from the HMI man-machine interface. The sampling and transmitting module is responsible for voltage, current and temperature sampling and signal conversion through a sampling and transmitting unit connected to the output end of the post-stage rectification filter unit, converts the sampled parameters into signals and transmits the signals to the core control module for comparison and judgment. The protection module comprises a protection circuit connected to the core control module.

2. The charging station control system architecture of claim 1, wherein: The HMI man-machine interface comprises a touch screen and buttons for inputting information to the core control module to make the core control module issue instructions to control the direct-current charging pile to charge the electric vehicle, and the touch screen is connected to the core control module through a CAN bus to display the working state of the direct-current charging pile in real time.

3. The charging station control system architecture of claim 1, wherein: The protection circuit comprises a circuit unit for output overvoltage, overcurrent, short-circuit, input overvoltage, under-voltage and over-temperature protection of the charging pile control system.

4. The charging station control system architecture of claim 1, wherein: The sampling and transmitting module comprises a digital-to-analog converter, a voltage sampling unit, a current sampling unit and a temperature sampling unit.

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