Charging and discharging control system, method and device for intelligent charging pile and medium

Abstract

The invention provides an intelligent charging pile charging and discharging control system, method and device and a medium, and belongs to the technical field of charging piles. The system comprises a charging pile, an EC800E networking module, a preset electricity price comparison module, a real-time billing module and a charging pile and automobile communication module. The method comprises the following steps: through a networking function of an EC800E module, obtaining a current charging and discharging price dynamic state of a power grid; presetting a discharging electricity price and a charging electricity price threshold, and deciding charging and discharging operation according to the real-time electricity price and a preset electricity price result; when the pre-electricity price is lower than the real-time electricity price, the energy storage battery is used for discharging to the power grid; monitoring and recording real-time voltage and current data, and calculating charging power and electric energy information; calculating the charging or discharging cost required to be paid by the user; and sending the cost information to a service platform in real time by using the EC800E module. The charging efficiency is improved, the charging time is shortened, and a more convenient charging service is provided for an electric vehicle user.

Description

Technical Field

[0001] The present invention relates to an intelligent charging pile charging and discharging control system, method, device and medium, belonging to the technical field of charging piles. Background Art

[0002] With the popularity of electric vehicles and the growing demand for electric vehicle charging, charging piles, as an important infrastructure for electric vehicle charging, have become key considerations for their performance and efficiency. Most of the charging piles on the market currently have basic charging functions, but there are still many deficiencies in charging and discharging control. Traditional charging piles often lack intelligent charging and discharging control strategies during the charging process. They can usually only charge according to preset charging parameters and cannot be flexibly adjusted according to the actual state of the battery, charging needs, and the load of the power grid. This rigid charging method may not only lead to low charging efficiency, but also damage the battery and shorten the battery life. In addition, traditional charging piles also lack effective interaction with the power grid during the charging and discharging process. During the peak load period of the power grid, if a large number of charging piles are charged at the same time, it may bring a heavy burden to the power grid and even cause power grid failure. During the low load period of the power grid, the charging piles cannot fully utilize the remaining capacity of the power grid for charging, resulting in energy waste.

[0003] Therefore, there is an urgent need for an intelligent charging pile charging and discharging control method that can monitor the battery status, charging demand and grid load in real time, and formulate an intelligent charging and discharging control strategy based on this information. Summary of the invention

[0004] The purpose of the present invention is to provide a smart charging pile charging and discharging control system, method, device and medium, which can improve charging efficiency, reduce the burden on the power grid and improve energy utilization.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions: An intelligent charging pile charging and discharging control system, comprising: Charging pile, used to provide a charging interface and built-in energy storage battery; EC800E networking module, used to connect to the business platform and send real-time status information of the current charging and discharging price dynamics of the power grid, including the precise time point of charging and discharging and the total amount of electric energy during the charging and discharging process; The preset electricity price comparison module is used to compare the preset electricity price with the real-time electricity price obtained by the EC800E networking module, and make intelligent decisions on charging and discharging operations based on the comparison results; The real-time billing module is used to obtain the real-time voltage and current to calculate the power during the charging or discharging process of the car, and calculate the discharge or charging fee based on the acquired power data and real-time electricity price information, and send the fee information to the business platform through the EC800E module; The charging pile and vehicle communication module is used for communication between the charging pile and the vehicle's battery management system during the charging process, including sending charging protocol version information, receiving the highest voltage threshold fed back by the BMS, confirming the validity of the connection status, granting charging permission, transmitting battery status information, sending current time information and maximum charging capacity for BMS evaluation, and recording and summarizing key data of the charging process after charging is completed.

[0006] Preferably, when the preset discharge electricity price is higher than the real-time grid discharge electricity price, the preset electricity price comparison module preferentially utilizes grid resources to discharge the car, and if there is no car connected, uses the grid to charge the energy storage battery; when the preset discharge electricity price is lower than the real-time grid discharge electricity price and the energy storage battery has sufficient power, uses the battery to charge the car; when the preset charging electricity price is lower than the real-time grid charging electricity price, uses the energy storage battery to discharge to the grid.

[0007] Preferably, the charging pile and the vehicle communication module include an emergency stop charging mechanism, the BMS sends a stop charging instruction message BST when a fault is detected, and the charging pile sends a charge termination message CST when an abnormal condition is detected.

[0008] Preferably, after charging is completed, the charging pile and the vehicle communication module respectively send a battery status summary message BSD and a charging statistical data message CSD to record the charging process data.

[0009] A method for controlling charging and discharging of an intelligent charging pile comprises the following steps: Through the networking function of the EC800E module, it can be connected to the business platform in real time to obtain the current charging and discharging price dynamics of the power grid. The real-time electricity price information includes the precise charging and discharging time points and the total amount of electricity; Preset the discharge price and charge price thresholds, compare the real-time grid charge and discharge prices with the preset prices, and make intelligent decisions on charge and discharge operations based on the comparison results: When the preset discharge electricity price is higher than the real-time grid discharge electricity price, grid resources are preferentially used to discharge the car or charge the energy storage battery; When the preset discharge electricity price is lower than the real-time grid discharge electricity price and the energy storage battery is sufficiently charged, the energy storage battery is used to charge the car; When the preset charging price is lower than the real-time grid charging price, the energy storage battery is used to discharge to the grid; During the charging process, monitor and record real-time voltage and current data, calculate charging power and electric energy information; combine the current real-time electricity price information to calculate the charging or discharging fees that users need to pay; Use the EC800E module to send expense information to the business platform in real time, enabling instant confirmation and payment of expenses.

[0010] Preferably, the charging pile and vehicle discharge process control method is as follows: The charging pile initiates handshake communication, exchanges messages with the vehicle's battery management system, and confirms the charging protocol version and the maximum voltage threshold; The charging pile performs internal self-test and insulation test to confirm the validity of the connection status; The charging pile analyzes the message returned by the BMS, and sends a charging permission message if the charging prerequisites are met; The charging pile and BMS continuously exchange messages to evaluate charging conditions until both parties confirm that charging is ready; During the charging process, both the charging pile and the BMS have a mechanism to stop charging in an emergency; After charging is completed, both parties send a battery status summary message and a charging statistics message respectively.

[0011] A smart charging pile charge and discharge control device comprises a processor and a memory storing program instructions, wherein the processor is configured to execute the smart charging pile charge and discharge control method when running the program instructions.

[0012] A computer-readable storage medium stores a computer program, which is executed by a processor to implement the intelligent charging pile charging and discharging control method.

[0013] The advantages of the present invention are: Improve charging efficiency. By real-time detection of the current state of the rechargeable battery, and intelligent matching and dynamic adjustment based on the remaining battery power, charging speed requirements, and available power of the charging facilities, this method can significantly improve charging efficiency, shorten charging time, and provide more convenient charging services for electric vehicle users. Reduce grid load. By intelligently dispatching according to grid load conditions and the power requirements of charging facilities, this method can reduce grid load fluctuations and improve grid stability. At the same time, using renewable energy such as photovoltaic power generation and wind power generation for charging can help reduce dependence on traditional energy and achieve sustainable energy development. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0015] Figure 1It is a schematic diagram of the process of the present invention.

[0016] Figure 2 It is a schematic diagram of the charging and discharging judgment logic flow of the charging pile of the present invention. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Example 1 An intelligent charging pile charging and discharging control system, comprising: Charging pile, used to provide a charging interface and built-in energy storage battery; EC800E networking module, used to connect to the business platform and send real-time status information of the current charging and discharging price dynamics of the power grid, including the precise time point of charging and discharging and the total amount of electric energy during the charging and discharging process; The preset electricity price comparison module is used to compare the preset electricity price with the real-time electricity price obtained by the EC800E networking module, and make intelligent decisions on charging and discharging operations based on the comparison results; The real-time billing module is used to obtain the real-time voltage and current to calculate the power during the charging or discharging process of the car, and calculate the discharge or charging fee based on the acquired power data and real-time electricity price information, and send the fee information to the business platform through the EC800E module; The charging pile and vehicle communication module is used for communication between the charging pile and the vehicle's battery management system during the charging process, including sending charging protocol version information, receiving the highest voltage threshold fed back by the BMS, confirming the validity of the connection status, granting charging permission, transmitting battery status information, sending current time information and maximum charging capacity for BMS evaluation, and recording and summarizing key data of the charging process after charging is completed.

[0019] As a refinement of the above embodiment, through the EC800E module, it is possible to connect to the business platform and accurately capture the current charging and discharging price dynamics of the power grid. In this process, the networking module of EC800E plays a core role. It can not only send status information in real time, but also ensure the comprehensiveness and immediacy of the information. Specifically, the status information covers the precise time points of charging and discharging and the total amount of electric energy involved in the charging and discharging process, providing users with detailed data support, which is convenient for subsequent decision-making analysis and optimization adjustments.

[0020] As a refinement of the above embodiment, after obtaining the real-time charging and discharging price of the power grid, the concept of preset electricity price is introduced. By comparing the two, intelligent decision-making of charging and discharging operations is realized. The core of this strategy is to maximize economic benefits and energy utilization efficiency: when the preset discharge electricity price is higher than the real-time power grid discharge electricity price, the system will give priority to using power grid resources to discharge the car. If there is no car connected at this time, the power grid will be used to charge the energy storage battery to effectively store excess electricity for emergency use; if the preset discharge electricity price is lower than the real-time power grid discharge electricity price, and the energy storage battery has sufficient power, the system will intelligently dispatch and use the battery to charge the car, thereby using the price difference to create additional revenue; when the preset charging electricity price is lower than the real-time power grid charging electricity price, a reverse strategy is adopted, that is, using the energy storage battery to discharge to the power grid, which not only balances the power grid load, but also brings considerable income to users.

[0021] As a refinement of the above embodiment, the real-time billing module obtains real-time voltage and current during the charging operation of the car, which is used to calculate power, so as to accurately capture and obtain detailed power information during the discharge process. Based on the accurate power data obtained and combined with the current real-time electricity price information, the discharge fee that the user needs to pay is calculated. The EC800E module is used to send fee information to the business platform to realize the timed transmission and settlement of fees. With its powerful network connection capabilities and data transmission stability, it can quickly send the real-time discharge fee information to the relevant system or platform, thereby realizing the instant confirmation and payment of fees.

[0022] In the process of car charging, the real-time voltage and current data are accurately monitored and recorded, and the charging power is calculated based on this, so as to fully capture and record the electric energy information during the discharge process. Relying on the collected high-precision electric energy data and combining the current real-time electricity price information, the discharge cost that the user needs to bear is calculated. In order to achieve efficient transmission and settlement of costs, the EC800E module is used, and its excellent network connection capabilities and data transmission stability are used to send the cost information to the business platform in real time. With its powerful performance, the EC800E module can ensure the instant transmission of discharge cost information to the relevant system or platform, thereby realizing instant confirmation and convenient payment of costs.

[0023] As a refinement of the above embodiment, the charging pile and the car communication module are equipped with an emergency stop charging mechanism to ensure the safety and flexibility of the charging process: the BMS and the charging pile will immediately send a stop charging command message BST when any fault is detected; and the charging pile will respond to any abnormal conditions detected by itself by sending a charging termination message CST. After the charging process is completed, both parties will send a battery status summary message BSD and a charging statistics message CSD respectively to comprehensively record and summarize the key data of the charging process.

[0024] Example 2 A method for controlling charging and discharging of an intelligent charging pile comprises the following steps: S1: Through the networking function of the EC800E module, it is connected to the business platform in real time to obtain the current charging and discharging price dynamics of the power grid. The real-time electricity price information includes the precise charging and discharging time points and the total amount of electricity; S2: preset the discharge price and charging price threshold, compare the real-time grid charging and discharging price with the preset price, and make intelligent decisions on charging and discharging operations based on the comparison results: When the preset discharge electricity price is higher than the real-time grid discharge electricity price, grid resources are preferentially used to discharge the car or charge the energy storage battery; When the preset discharge electricity price is lower than the real-time grid discharge electricity price and the energy storage battery is sufficiently charged, the energy storage battery is used to charge the car; S3: When the preset charging price is lower than the real-time grid charging price, the energy storage battery is used to discharge to the grid; S4: During the charging process, monitor and record real-time voltage and current data, calculate charging power and electric energy information; combine the current real-time electricity price information to calculate the charging or discharging fee that the user needs to pay; S5: Use the EC800E module to send expense information to the business platform in real time to achieve instant confirmation and payment of expenses.

[0025] As a refinement of the above embodiment, the charging pile and the vehicle discharge process control method are as follows: At the beginning of the charging process, the charging pile actively initiates handshake communication and sends a CHM message to the vehicle's battery management system (BMS), clearly conveying the charging protocol version information used. The BMS then feeds back a BHM message to accurately define the maximum voltage threshold that the power extraction device can withstand. After receiving the BHM message, the charging pile immediately performs internal self-test and insulation testing, and confirms the validity of the connection status to the BMS through a CRM message. After receiving the CRM message, the BMS will reply with a BRM message containing key parameters such as the core communication protocol number. The charging pile analyzes the content of the BRM message, and once all charging prerequisites are met, it immediately sends a CRM message to grant charging permission.

[0026] Subsequently, the BMS uses the battery parameter message BCP to transmit detailed battery status information to the charging pile, and the charging pile continuously sends the current time information message CTS and the maximum charging capacity message CML for the BMS to comprehensively evaluate the charging conditions. If the capacity shown in the CML message meets the charging requirements of the BMS, the BMS will send a ready confirmation message BRO with the content AA, indicating that the charging preparation is fully ready. After receiving the BRO message, the charging pile immediately replies with the same content AA to the charging ready message CRO, officially announcing the start of the charging process.

[0027] Example 3 The embodiment of the present disclosure also provides a smart charging pile charge and discharge control device, including a processor and a memory. Optionally, the device may also include a communication interface and a bus. The processor, the communication interface, and the memory may communicate with each other through the bus. The communication interface may be used for information transmission. The processor may call the logic instructions in the memory to execute the smart charging pile charge and discharge control method of the above embodiment.

[0028] In addition, the logic instructions in the above-mentioned memory can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product.

[0029] The memory, as a computer-readable storage medium, can be used to store software programs and computer executable programs, such as program instructions / modules corresponding to the method in the embodiment of the present disclosure. The processor executes the functional application and data processing by running the program instructions / modules stored in the memory, that is, the intelligent charging pile charging and discharging control method in the above embodiment is implemented.

[0030] The memory may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application required for at least one function; the data storage area may store data created according to the use of the terminal device, etc. In addition, the memory may include a high-speed random access memory and may also include a non-volatile memory.

[0031] An embodiment of the present disclosure provides a computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are configured to execute the above-mentioned intelligent charging pile charging and discharging control method.

[0032] The computer-readable storage medium mentioned above may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0033] The technical solution of the embodiment of the present disclosure can be embodied in the form of a software product, which is stored in a storage medium and includes one or more instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in the embodiment of the present disclosure. The aforementioned storage medium may be a non-transient storage medium, including: a USB flash drive, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a disk or an optical disk, and other media that can store program codes, or a transient storage medium.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An intelligent charging pile charging and discharging control system, characterized in that: include: Charging pile, used to provide a charging interface and built-in energy storage battery; EC800E networking module, used to connect to the business platform and send real-time status information of the current charging and discharging price dynamics of the power grid, including the precise time point of charging and discharging and the total amount of electric energy during the charging and discharging process; The preset electricity price comparison module is used to compare the preset electricity price with the real-time electricity price obtained by the EC800E networking module, and make intelligent decisions on charging and discharging operations based on the comparison results; The real-time billing module is used to obtain the real-time voltage and current to calculate the power during the charging or discharging process of the car, and calculate the discharge or charging fee based on the acquired power data and real-time electricity price information, and send the fee information to the business platform through the EC800E module; The charging pile and vehicle communication module is used for communication between the charging pile and the vehicle's battery management system during the charging process, including sending charging protocol version information, receiving the highest voltage threshold fed back by the BMS, confirming the validity of the connection status, granting charging permission, transmitting battery status information, sending current time information and maximum charging capacity for BMS evaluation, and recording and summarizing key data of the charging process after charging is completed.

2. The intelligent charging pile charging and discharging control system according to claim 1 is characterized in that: When the preset discharge electricity price is higher than the real-time grid discharge electricity price, the preset electricity price comparison module preferentially utilizes grid resources to discharge the car. If there is no car connected, the grid is used to charge the energy storage battery. When the preset discharge electricity price is lower than the real-time grid discharge electricity price and the energy storage battery has sufficient power, the battery is used to charge the car. When the preset charging electricity price is lower than the real-time grid charging electricity price, the energy storage battery is used to discharge to the grid.

3. The intelligent charging pile charging and discharging control system according to claim 1 is characterized in that: The charging pile and vehicle communication module includes an emergency stop charging mechanism. The BMS sends a stop charging instruction message BST when a fault is detected, and the charging pile sends a charging termination message CST when an abnormal condition is detected.

4. The intelligent charging pile charging and discharging control system according to claim 1 is characterized in that: After charging is completed, the charging pile and the vehicle communication module respectively send a battery status summary message BSD and a charging statistical data message CSD to record the charging process data.

5. A method for controlling charging and discharging of an intelligent charging pile using the system described in any one of claims 1 to 4, characterized in that: The following steps are involved: Through the networking function of the EC800E module, it can be connected to the business platform in real time to obtain the current charging and discharging price dynamics of the power grid. The real-time electricity price information includes the precise charging and discharging time points and the total amount of electricity; Preset the discharge price and charge price thresholds, compare the real-time grid charge and discharge prices with the preset prices, and make intelligent decisions on charge and discharge operations based on the comparison results: When the preset discharge electricity price is higher than the real-time grid discharge electricity price, grid resources are preferentially used to discharge the car or charge the energy storage battery; When the preset discharge electricity price is lower than the real-time grid discharge electricity price and the energy storage battery is sufficiently charged, the energy storage battery is used to charge the car; When the preset charging price is lower than the real-time grid charging price, the energy storage battery is used to discharge to the grid; During the charging process, monitor and record real-time voltage and current data, and calculate charging power and energy information; Combined with the current real-time electricity price information, calculate the charging or discharging fees that users need to pay; Use the EC800E module to send expense information to the business platform in real time.

6. The intelligent charging pile charging and discharging control method according to claim 5, characterized in that: The control method of charging pile and vehicle discharge process is as follows: The charging pile initiates handshake communication, exchanges messages with the vehicle's battery management system, and confirms the charging protocol version and the maximum voltage threshold; The charging pile performs internal self-test and insulation test to confirm the validity of the connection status; The charging pile analyzes the message returned by the BMS, and sends a charging permission message if the charging prerequisites are met; The charging pile and BMS continuously exchange messages to evaluate charging conditions until both parties confirm that charging is ready; During the charging process, both the charging pile and the BMS have a mechanism to stop charging in an emergency; After charging is completed, both parties send a battery status summary message and a charging statistics message respectively.

7. An intelligent charging pile charging and discharging control device, comprising a processor and a memory storing program instructions, characterized in that: The processor is configured to execute the intelligent charging pile charging and discharging control method as described in any one of claims 5-6 when running the program instructions.

8. A computer-readable storage medium, characterized in that: A computer program is stored thereon, and when the program is executed by a processor, the method described in any one of claims 5-6 is implemented.

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