An ordered charging management system and method for charging piles

Abstract

The present application provides an orderly charging management system and method for charging piles, including a grid power management controller and multiple charging piles; a charging protocol transfer controller is installed on each charging pile; the grid power management controller includes a first MCU module and an RS485 module; the RS485 module is used to collect the total power consumption data of the current grid; the first MCU module is used to determine whether power reduction is required, and if so, send a power reduction signal to the charging protocol transfer controller; the charging protocol transfer controller includes a second MCU module and a CAN transparent transmission module; the first MCU module and the second MCU module are communicatively connected through a controller communication module; the second MCU module is used to forward the power reduction signal to the CAN transparent transmission module; the CAN transparent transmission module is used to control the corresponding charging pile to reduce the output power according to the power reduction signal. The present application can orderly control each charging pile to reduce power for charging, thereby alleviating the power supply pressure of the current grid.

Description

Technical Field

[0001] This application relates to the technical field of charging pile charging management, and particularly relates to an ordered charging management system and method for charging piles. Background Art

[0002] With the shortage of energy and the need for environmental protection, electric vehicles have been widely promoted and applied to reduce the energy consumption of fuel vehicles and the impact of exhaust emissions on the environment. As the number of electric vehicles gradually increases, more and more charging piles are needed to meet the charging needs of electric vehicles. Although the increase in the number of charging piles can alleviate the tense charging demand. However, large-scale disordered charging of charging piles poses challenges to the safe and stable operation of power distribution, and at the same time, disordered charging of charging piles requires a large installed capacity of transformers and has a low utilization rate. For this reason, this application proposes an ordered charging management system and method for charging piles. Summary of the Invention

[0003] The purpose of this application is to provide an ordered charging management system and method for charging piles for the above problems.

[0004] In a first aspect, this application provides an ordered charging management system for charging piles, including a grid power management controller and multiple charging piles; a charging protocol transfer controller is installed on each of the charging piles;

[0005] The grid power management controller includes a first MCU module and an RS485 module; the RS485 module is connected to the electric meter and is configured to collect the total current grid power consumption data and send the total current grid power consumption data to the first MCU module; the first MCU module is configured to determine whether power reduction is required according to the received total current grid power consumption data, and if so, send a power reduction signal to the charging protocol transfer controller;

[0006] The charging protocol transfer controller includes a second MCU module and a CAN transparent transmission module; the first MCU module and the second MCU module are communicatively connected through a controller communication module; the second MCU module is configured to receive the power reduction signal sent by the first MCU module and send the power reduction signal to the CAN transparent transmission module; the CAN transparent transmission module is configured to transparently transmit the communication messages between the charging pile and the electric vehicle. When the CAN transparent transmission module receives the power reduction signal, it truncates the battery charging demand message sent by the electric vehicle to the charging pile, and modifies the battery charging demand message of the electric vehicle according to the power reduction value or power reduction percentage included in the received power reduction signal, and then sends the modified message to the charging pile to control the corresponding charging pile to reduce the output power.

[0007] Further, the controller communication module includes a CAN data communication module and / or a LORA communication module.

[0008] According to the technical solution provided by some embodiments of the present application, the power grid power management controller further includes a first RS232 communication module; the first MCU module is connected to the touch screen through the first RS232 communication module.

[0009] Further, the power grid power management controller further includes a first 4G / 5G communication module; the first MCU module is connected to the background server through the 4G / 5G communication module.

[0010] Further, the charging protocol transfer controller further includes a second 4G / 5G communication module; the second MCU module is connected to the background server through the second 4G / 5G communication module.

[0011] Further, the charging protocol transfer controller further includes a DCDC isolation module.

[0012] In a second aspect, the present application provides a method for orderly charging management of charging piles, the method includes:

[0013] Obtain the total power consumption data of the current power grid;

[0014] Judge whether power reduction is required according to the total power consumption data of the current power grid;

[0015] If so, send a power reduction signal to the charging protocol transfer controllers installed on each charging pile in sequence, and the CAN transparent transmission module of the charging protocol transfer controller controls the corresponding charging pile to reduce the output power according to the power reduction signal.

[0016] Further, judging whether power reduction is required according to the total power consumption data of the current power grid specifically includes:

[0017] Calculate the product of the maximum power value and the critical percentage to obtain the power reduction critical value; where the maximum power value and the critical percentage are both preset in the power grid power management controller in advance;

[0018] Judge whether the total power consumption of the current power grid is greater than or equal to the power reduction critical value;

[0019] If so, power reduction is required; if not, power reduction is not required.

[0020] Further, the CAN transparent transmission module of the charging protocol transfer controller controls the corresponding charging pile to reduce the output power according to the power reduction signal, specifically including:

[0021] Truncate the battery charging demand message sent by the electric vehicle to the charging pile;

[0022] Modify the electric vehicle battery charging demand message according to the power reduction value or power reduction percentage included in the received power reduction signal;

[0023] Send the modified message to the charging pile.

[0024] Compared with the prior art, the beneficial effects of the present application: The orderly charging management system of this charging pile, by setting a grid power management controller and installing a charging protocol transfer controller on each charging pile, and connecting the grid power management controller to each charging protocol transfer controller through a controller communication module, when it is judged that the total power consumption of the current grid reaches or exceeds the preset power reduction critical value, it can orderly control each charging pile to charge with power reduction, thereby alleviating the current power supply pressure of the grid to a certain extent. Description of the Drawings

[0025] Figure 1 It is a schematic structural diagram of the orderly charging management system of the charging pile provided by the embodiment of the present application;

[0026] Figure 2 It is a schematic structural diagram of the charging protocol transfer controller of the orderly charging management system of the charging pile provided by the embodiment of the present application;

[0027] Figure 3 It is a flowchart of the orderly charging management method of the charging pile provided by the embodiment of the present application;

[0028] Figure 4 is Figure 3 The schematic flowchart of the specific implementation of step S2 in

[0029] Figure 5 is Figure 3 The schematic flowchart of the specific implementation of step S3 in Detailed Embodiment

[0030] In order to enable those skilled in the art to better understand the technical solution of the present application, the present application will be described in detail below with reference to the accompanying drawings. The description of this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present application.

[0031] Please refer to Figure 1 and Figure 2 , this embodiment provides an orderly charging management system for charging piles to prevent the main switch from powering off due to a large number of users charging simultaneously. The system includes a grid power management controller and a plurality of charging piles for charging electric vehicles; a charging protocol transfer controller is installed on each of the charging piles.

[0032] The grid power management controller includes a first MCU module and an RS485 module; a digital electric meter is installed on the main switch, and this meter is used to monitor the power consumption of the main transformer, that is, the total current grid power consumption; the RS485 module is connected to the electric meter, and is configured to collect the total current grid power consumption data from the electric meter and send the total current grid power consumption data to the first MCU module; the first MCU module is configured to determine whether power reduction is required according to the received total current grid power consumption data, and if so, send a power reduction signal to the charging protocol transfer controller.

[0033] Specifically, a maximum power value and a critical percentage are preset in the first MCU module. Generally, the maximum power value is set according to the power consumption of different application scenarios. The critical percentage is generally set to 70%; the first MCU module calculates the product of the maximum power value and the critical percentage to obtain a power reduction critical value, and compares this power reduction critical value with the obtained total current grid power consumption. If the total current grid power consumption is less than the power reduction critical value, it means that power reduction is not required, and each charging pile still charges the electric vehicle at the current power; if the total current grid power consumption is greater than or equal to the power reduction critical value, it means that power reduction is required, then the first MCU module sequentially sends a power reduction signal to the charging protocol transfer controller connected to each charging pile in the order of the start time of charging work of each charging pile. This power reduction signal includes a power reduction value or a power reduction percentage. Specifically, whether it is a power reduction value or a power reduction percentage depends on the setting of the staff. Generally, the power reduction value is set to 1kw, and the power reduction percentage is set to 5%. That is, when the power reduction signal contains a 1kw power reduction value, it means that the output power of each charging pile is reduced by 1kw on the current basis; when the power reduction signal contains a 5% power reduction percentage, it means that the output power of each charging pile is reduced to 95% of the current power value.

[0034] The charging protocol transfer controller is installed on the charging pile base and includes a second MCU module and a CAN transparent transmission module; the first MCU module and the second MCU module are communicatively connected through a controller communication module; the second MCU module is configured to receive the power reduction signal sent by the first MCU module and send the power reduction signal to the CAN transparent transmission module; the CAN transparent transmission module is configured to control the corresponding charging pile to reduce the output power according to the received power reduction signal.

[0035] Specifically, the CAN transparent transmission module is responsible for transparently transmitting the communication messages between the charging pile and the electric vehicle. When the CAN transparent transmission module receives the power reduction signal, it truncates the battery charging demand message (BCL) sent by the electric vehicle to the charging pile, modifies the battery charging demand message of the electric vehicle according to the power reduction value or power reduction percentage contained in the received power reduction signal, and then sends the modified message to the charging pile, so as to achieve the purpose of reducing the output power of the charging pile.

[0036] When installing the charging pile, each charging pile will be numbered. When an electric vehicle is connected to a certain charging pile, the charging protocol transfer controller installed on the charging pile base will send the number information of the charging pile to the first MCU module of the grid power management controller. The first MCU module stores the charging piles that start charging work in sequence according to the received number information. Therefore, when power reduction is required, the first MCU module will sequentially send power reduction signals to the charging protocol transfer controllers of the charging piles corresponding to each number information in order, that is, the charging pile that first connects the electric vehicle and starts charging work will reduce power first to ensure that each charging pile reduces power in an orderly manner, thereby alleviating the current power supply pressure of the grid to a certain extent.

[0037] Furthermore, the controller communication module includes a CAN data communication module and / or a LORA communication module. Which communication method is specifically adopted depends on the situation. For example, for the case where charging piles are relatively concentrated, the CAN data communication module can be used; for the case where charging piles are relatively dispersed, the LORA communication module can be used.

[0038] Furthermore, the grid power management controller further includes a first 4G / 5G communication module; the first MCU module is connected to the background server through the 4G / 5G communication module. Operators can remotely set parameters such as the maximum power value, critical percentage, power reduction value, and power reduction percentage on the background server.

[0039] Furthermore, the grid power management controller further includes a first RS232 communication module; the first MCU module is connected to the touch screen through the first RS232 communication module, which is convenient for operators to set parameters such as the maximum power value, critical percentage, power reduction value, and power reduction percentage on site.

[0040] Furthermore, the charging protocol transfer controller further includes a second 4G / 5G communication module; the second MCU module is connected to the background server through the second 4G / 5G communication module.

[0041] Furthermore, the charging protocol transfer controller further includes a DCDC isolation module to achieve power isolation.

[0042] The orderly charging management system for charging piles provided by the embodiments of the present application can orderly control the charging piles to reduce power when it is judged that the total power consumption of the current power grid reaches or exceeds a pre-set power reduction critical value by setting a power grid power management controller and installing a charging protocol transfer controller on each charging pile, and connecting the power grid power management controller to each charging protocol transfer controller through a controller communication module, thereby alleviating the current power supply pressure of the power grid to a certain extent.

[0043] This embodiment also provides a method for managing an orderly charging management system for charging piles using the above-mentioned orderly charging management system for charging piles, and its flowchart is as Figure 3 shown, and the method includes the following steps:

[0044] S1. Obtain the total power consumption data of the current power grid.

[0045] The RS485 module of the power grid power management controller of the orderly charging management system for charging piles is connected to the electric meter, and is used to collect the total power consumption data of the current power grid from the electric meter and send the total power consumption data of the current power grid to the first MCU module of the power grid power management controller.

[0046] S2. Judge whether power reduction is needed according to the total power consumption data of the current power grid.

[0047] The first MCU module of the power grid power management controller judges whether power reduction is needed according to the received total power consumption data of the current power grid. Please refer to Figure 4 , and specifically, the judgment method is as follows:

[0048] S21. Calculate the product of the maximum power value and the critical percentage to obtain the power reduction critical value; both the maximum power value and the critical percentage are preset by the staff in advance and stored in the first MCU module of the power grid power management controller. The maximum power value is set according to the power consumption of different application scenarios, and the critical percentage is generally set to 70%.

[0049] S22. Judge whether the total power consumption of the current power grid is greater than or equal to the power reduction critical value; the judgment process is completed by the first MCU module of the power grid power management controller.

[0050] S23. If so, power reduction is needed.

[0051] S24. If not, power reduction is not needed.

[0052] S3. If power reduction is needed, send a power reduction signal to the charging protocol transfer controllers installed on each charging pile in sequence. The CAN transparent transmission module of the charging protocol transfer controller controls the corresponding charging pile to reduce the output power according to the power reduction signal.

[0053] When it is determined that power reduction is required, the first MCU module of the grid power management controller sequentially sends power reduction signals to the charging protocol conversion controllers connected to each charging pile in the order of the start of charging work of each charging pile.

[0054] It should be noted that when installing the charging piles, each charging pile will be numbered. When an electric vehicle is connected to a certain charging pile, the charging protocol conversion controller installed on the charging pile base sends the number information of the charging pile to the first MCU module of the grid power management controller. The first MCU module sequentially stores the charging piles that start charging work according to the received number information. Thus, when power reduction is required, the first MCU module sequentially sends power reduction signals to the charging protocol conversion controllers of the charging piles corresponding to each number information in the storage order, that is, the charging pile that first connects an electric vehicle and starts charging work reduces its charging power first, ensuring that each charging pile reduces its power in an orderly manner.

[0055] The charging protocol conversion controller is installed on the charging pile base and includes a second MCU module and a CAN transparent transmission module; the first MCU module and the second MCU module are communicatively connected through a controller communication module; when the first MCU module sends a power reduction signal to the current charging protocol conversion controller, the second MCU module receives and forwards the power reduction signal to the CAN transparent transmission module; the CAN transparent transmission module controls the corresponding charging pile to reduce its output power according to the power reduction signal. Please refer to Figure 5 , specifically including:

[0056] S31. Truncate the battery charging demand message sent by the electric vehicle to the charging pile;

[0057] The CAN transparent transmission module of the charging protocol conversion controller is responsible for transparently transmitting the communication messages between the charging pile and the electric vehicle. When the CAN transparent transmission module receives a power reduction signal, it first truncates the battery charging demand message (BCL) sent by the electric vehicle to the charging pile.

[0058] S32. Modify the battery charging demand message of the electric vehicle according to the power reduction value or power reduction percentage included in the received power reduction signal.

[0059] The power reduction signal includes a power reduction value or a power reduction percentage. Specifically, whether it is a power reduction value or a power reduction percentage depends on the setting of the staff. Generally, the power reduction value is set to 1 kw, and the power reduction percentage is set to 5%. That is, when the power reduction signal includes a power reduction value of 1 kw, it means that the output power of each charging pile is reduced by 1 kw on the current basis; when the power reduction signal includes a power reduction percentage of 5%, it means that the output power of each charging pile is reduced to 95% of the current power value.

[0060] S33. Send the modified message to the charging pile, so as to achieve the purpose of reducing the output power of the charging pile.

[0061] S4. If power reduction is not required, each charging pile charges the electric vehicle at the current power.

[0062] In this article, specific examples are used to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application. The above is only the preferred implementation manner of the present application. It should be noted that due to the limited nature of text expression, and objectively there are infinite specific structures. For those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements, refinements or changes can also be made, or the above technical features can be combined in an appropriate manner; these improvements, refinements, changes or combinations, or directly applying the concept and technical solution of the invention to other occasions without improvement, shall all be regarded as the protection scope of the present application.

Claims

1. An orderly charging management system for a charging pile, characterized in that, It includes a power grid power management controller and multiple charging piles; a charging protocol transfer controller is installed on each of the charging piles; The power grid power management controller includes a first MCU module and an RS485 module; the RS485 module is connected to the electricity meter and is configured to collect the total current power consumption data of the power grid and send the total current power consumption data of the power grid to the first MCU module; The first MCU module is configured to determine whether power reduction is required according to the received total current power consumption data of the power grid. If so, it sends a power reduction signal to the charging protocol transfer controller; The charging protocol transfer controller includes a second MCU module and a CAN transparent transmission module; the first MCU module and the second MCU module are communicatively connected through a controller communication module; the second MCU module is configured to receive the power reduction signal sent by the first MCU module and send the power reduction signal to the CAN transparent transmission module; the CAN transparent transmission module is configured to transparently transmit the communication messages between the charging pile and the electric vehicle. When the CAN transparent transmission module receives the power reduction signal, it truncates the battery charging demand message sent by the electric vehicle to the charging pile, and modifies the battery charging demand message of the electric vehicle according to the power reduction value or power reduction percentage included in the received power reduction signal, and then sends the modified message to the charging pile to control the corresponding charging pile to reduce the output power; A maximum power value and a critical percentage are preset in the first MCU module. The first MCU module calculates the product of the maximum power value and the critical percentage to obtain a power reduction critical value, and compares the power reduction critical value with the obtained total current power consumption data of the power grid. If the total current power consumption data of the power grid is greater than or equal to the power reduction critical value, it means that power reduction is required. Then, the first MCU module sequentially and orderly sends power reduction signals to the charging protocol transfer controllers connected to the respective charging piles according to the order in which the respective charging piles start charging. The power reduction signal includes a power reduction value or a power reduction percentage.

2. The orderly charging management system for charging piles according to claim 1, wherein The controller communication module includes a CAN data communication module and / or a LORA communication module.

3. The orderly charging management system for charging piles according to claim 1, characterized in that The power grid power management controller further includes a first RS232 communication module; the first MCU module is connected to the touch screen through the first RS232 communication module.

4. The orderly charging management system for charging piles according to claim 1, characterized in that The power grid power management controller further includes a first 4G / 5G communication module; the first MCU module is connected to the background server through the 4G / 5G communication module.

5. The orderly charging management system for charging piles according to claim 1, characterized in that The charging protocol transfer controller further includes a second 4G / 5G communication module; the second MCU module is connected to the background server through the second 4G / 5G communication module.

6. The orderly charging management system for charging piles according to claim 1, characterized in that The charging protocol transfer controller further includes a DCDC isolation module.

7. An orderly charging management method for a charging pile, characterized in that, The method adopts the charging pile orderly charging management system according to any one of claims 1-6. The method includes: Obtaining the total current power consumption data of the power grid; Judging whether power reduction is required according to the total current power consumption data of the power grid; If so, successively send a power reduction signal to the charging protocol transfer controllers installed on each charging pile, and the CAN transparent transmission module of the charging protocol transfer controller controls the corresponding charging pile to reduce the output power according to the power reduction signal.

8. The method for orderly charging management of a charging pile according to claim 7, wherein Judging whether power reduction is required according to the current total grid power consumption data specifically includes: Calculating the product of the maximum power value and the critical percentage to obtain the power reduction critical value; wherein both the maximum power value and the critical percentage are preset in advance in the grid power management controller; Judging whether the current total grid power consumption is greater than or equal to the power reduction critical value; If so, power reduction is required; if not, power reduction is not required.

9. The method for orderly charging management of a charging pile according to claim 7, characterized in that, The CAN transparent transmission module of the charging protocol transfer controller controls the corresponding charging pile to reduce the output power according to the power reduction signal, specifically including: Truncating the battery charging demand message sent by the electric vehicle to the charging pile; Modifying the battery charging demand message of the electric vehicle according to the power reduction value or power reduction percentage included in the received power reduction signal; Sending the modified message to the charging pile.

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