A mobile intelligent charging pile system

Abstract

The present invention discloses a mobile intelligent charging pile system, comprising a charging vehicle, a charging pile provided on the charging vehicle, and a charge and discharge control management unit for an energy storage device in the mobile charging pile. The charge and discharge control management unit obtains the SOC of the energy storage device, and when the SOC is lower than a preset threshold, selects a corresponding strategy according to the operating state of the charging vehicle to recharge the energy storage device corresponding to the SOC lower than the preset threshold. By formulating different charging strategies for different states of the charging vehicle and coordinating with relevant data of the energy storage battery, the amount of discharged electric energy is intelligently managed to improve the life of the system, and according to technical requirements, the data is summarized to a display unit to provide customers or professional maintenance personnel with information about the operating state of the equipment, thereby ensuring the mobile power of the mobile charging pile in an unmanned situation, and intelligently realizing the linkage of vehicle, pile and person information according to the background database, thereby solving the contradiction between the number of charging piles and the amount of land used.

Description

Technical Field

[0001] The invention relates to the field of DC charging piles, specifically a mobile intelligent charging pile system. Background Art

[0002] In the future, the number of electric vehicles in operation will become increasingly large, making charging pile services increasingly important. However, the country's urbanization progress will inevitably lead to a shortage of urban land, so mobile charging pile equipment can solve the contradiction between the number of charging piles and the amount of land used. Summary of the Invention

[0003] The purpose of the invention is to provide a mobile intelligent charging pile system to solve the problems raised in the above background technology.

[0004] To achieve the above objectives, the invention provides the following technical solutions:

[0005] A mobile intelligent charging pile system includes a charging vehicle, which is equipped with at least one charging pile, and a charge and discharge control management unit for an energy storage device in the mobile charging pile. The charge and discharge control management unit obtains the state of charge (SOC) of the energy storage device and, when the SOC is lower than a preset threshold, selects a corresponding strategy based on the operating state of the charging vehicle to recharge the corresponding energy storage device whose SOC is lower than the preset threshold.

[0006] Among them, the strategies include:

[0007] When the charging vehicle is not in operation and the current generated by the energy storage device is lower than the preset current value and lasts for more than the preset time, the discharge circuit is automatically disconnected and the charging circuit is closed to enter the charging mode until it is fully charged and then enters the discharge mode;

[0008] When the charging circuit is closed and enters the charging mode, if the charging pile equipment needs to be moved, it is necessary to restart the charging car key, energy storage device, disconnect the charging circuit, and close the discharge circuit to enter the discharge mode;

[0009] When the charging vehicle is in driving state and the energy storage device reaches the over-discharge condition, the charging vehicle is powered off. After the charging vehicle is charged, the energy storage device automatically disconnects the discharge circuit and closes the charging circuit to enter the charging mode.

[0010] Furthermore, when the energy storage device is discharging, the voltage difference between the output voltage and the voltage of the battery to be charged is less than 2 volts, and the charging contactor is attracted;

[0011] When the energy storage device is discharged, the output current is limited to less than 5A, and the charging contactor is disconnected.

[0012] When the energy storage device is not charging, the output voltage is between 24 and 26 volts.

[0013] Furthermore, the preset current value is 5A, and the preset time is 5 minutes.

[0014] Furthermore, the smart charging pile system also includes a power conversion unit, which performs DC-AC conversion on the input and output voltages of the energy storage device.

[0015] Furthermore, the intelligent charging pile system also includes a terminal display unit, which obtains the SOC, total voltage, total current, single cell temperature, voltage extreme value, charging voltage, current, charging time and charging billing of the energy storage device and displays them in real time on the terminal display screen.

[0016] Furthermore, the smart charging pile system also includes a voice unit, which provides voice prompts for the content displayed on the terminal display screen in real time.

[0017] Furthermore, the smart charging pile system also includes a background service management unit, which integrates the data of the charging and discharging control management unit, the power conversion unit, the terminal display unit, and the voice unit through the transmission module, and pushes it to the background server or mobile phone APP through the background protocol, and at the same time receives remote control instructions from the background server or mobile phone APP.

[0018] Compared with the prior art, the beneficial effects of the invention are:

[0019] By formulating different charging strategies for different states of charging vehicles and coordinating with relevant data of energy storage batteries, the amount of discharged electrical energy can be intelligently managed to improve the life of the system. In addition, according to technical requirements, data is summarized and displayed to the display unit to provide customers or professional maintenance personnel with information about the operating status of the equipment. The mobile power of mobile charging piles is guaranteed in unattended situations. According to the background database, the information of vehicles, piles and people is intelligently linked, which solves the contradiction between the number of charging piles and the amount of land used. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a principle block diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the control panel of the present invention;

[0022] Figure 3 This is the electrical schematic diagram of the present invention. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0024] See also Figure 1-3 In an embodiment of the invention, a charging vehicle is provided with at least one charging pile, wherein an intelligent charging pile system is used to control the charging pile and the charging vehicle to charge and discharge. The intelligent charging pile system includes a charging and discharging control management unit, a power conversion unit, a terminal display unit, a voice unit, and a background service management unit.

[0025] The charge and discharge control management unit is used to convert and control the charging and discharging of the charging pile in accordance with the national standard software and hardware requirements and preset strategies. At the same time, it manages related power equipment according to the working status of the charging pile, including thermal management, magnetic management, etc., so that the charging pile can operate safely and reliably. Through relevant information and data, it intelligently manages the output of the power unit energy. At the same time, it cooperates with the relevant data of the energy storage battery to intelligently manage the amount of discharged electrical energy to improve the life of the system. In accordance with technical requirements, it summarizes data to the display unit to provide customers or professional maintenance personnel with information about the operating status of the equipment, and ensures the mobile power of the mobile charging pile in unattended situations. According to the background database, the information linkage of the vehicle, pile, and person is intelligently realized. In the specific implementation, the automotive-grade management chip is used to control and manage the discharge, and multi-channel high-voltage acquisition and insulation acquisition are used for the discharge management control unit to perform safety strategy control. According to the national standard protocol and the characteristics of the energy storage battery, the discharge power management is performed, thereby improving the safety and life of the system. In the discharge management process, the charging function is automatically guided, and the system is always in efficient energy management at the mobile charging pile. During the movement, the energy of the power battery pack is managed. The capacity of the combined energy storage equipment, real-time monitoring of the energy efficiency of the power battery pack, intelligent management and control of charging and mobile energy distribution, and realization of unmanned basic energy standards. Specifically, the charge and discharge control management unit includes a charging intelligent control management unit and a discharging intelligent control management unit. Among them, in the charging working state (the external device replenishes the energy storage device in the mobile charging pile device), the charging intelligent control management unit controls the charging contactor to be attracted through the BMS, and at the same time, through the CAN line and according to the preset strategy and the national standard charging protocol, the AC is converted into the DC output required by the energy storage battery. At the same time, the operating parameters of the system in the charging working state, such as temperature, current, voltage and other parameters, are obtained, and the temperature is intelligently adjusted during the system charging process in combination with the ambient temperature. During the external charging process, the discharge intelligent control management unit converts the DC of the energy storage battery into the DC output required by the device to be charged through the CAN line according to the preset strategy and the national standard charging protocol, and meets the charging requirements. In this process, the operating parameters of the system in the charging working state, such as temperature, current, voltage and other parameters, are obtained, and the temperature is intelligently adjusted during the system charging process in combination with the ambient temperature.

[0026] In one embodiment, the preset strategy is that when the charging pile device is turned on, it will determine whether the SOC of the energy storage device is less than 30%. If it is less than 30% and the electric vehicle is not in a driving state, the charging vehicle status is managed by VBOX. When the BMS detects that the current generated by the energy storage device is less than 10A and lasts for 5 minutes, it will automatically disconnect the discharge circuit and attract the charging circuit to enter the charging mode until it is fully charged and then enter the discharge mode.

[0027] If the charging pile equipment needs to be moved when the battery is half charged, the charging car key needs to be restarted to attract the discharge circuit and enter the discharge mode.

[0028] If the charging vehicle is in driving state and the current of the energy storage device is always greater than 10A, when the energy storage device over-discharge condition is reached, the BMS cuts off the energy storage device discharge circuit and reports a serious low-voltage fault of the energy storage device. At this time, the key switch needs to be restarted and the BMS directly enters the charging mode to start charging.

[0029] In both the above-mentioned discharge mode and charging mode, the key needs to be in the on condition. If the key signal is turned off, the BMS directly enters the sleep mode, the BMS exits all processes, and the charging and discharging actions of the energy storage device must be mutually exclusive and cannot be performed at the same time. The charging contactor is only energized when the voltage difference between the output voltage of the energy storage device and the voltage of the battery to be charged is below 2 volts during discharge. After the discharge is completed, the output current is limited to below 5A, and the charging contactor is disconnected. When the energy storage device is not charging, the output voltage is between 24 and 26 volts. When the energy storage device is charging, the vehicle has obvious light display to remind customers that the charging vehicle is in charging status and it is forbidden to move the charging vehicle.

[0030] The power conversion unit mainly realizes the DC-AC conversion function of energy, matches the DC constant voltage with the DC programmable voltage, and stores energy to realize the function of a mobile charging pile;

[0031] The terminal display unit and voice unit are mainly used for human-machine operation, showing the real-time data of the system to customers, and providing voice prompts for key data (such as the SOC, total voltage, total current, single-cell temperature and voltage extremes of energy storage equipment, etc., charging pile charging voltage, current, charging time, charging billing, etc.) and operations, and providing indicator lights and screen interface displays, so that the relevant information of the equipment can be presented to customers in three dimensions through sound, light, and screen, especially in the diagnosis of related equipment and dynamic prompts of faults. In specific implementation, the data related to the interaction between the charging and discharging control management unit and the power conversion unit, as well as electric vehicles and ground charging pile equipment, are displayed in real time on the terminal display screen, and relevant security card swiping devices are provided. In particular, key operations or safety prompts are prompted by voice or indicator lights. Relevant system diagnostic information can be displayed to professional operators through special operations, so that the cause of the system failure can be quickly located. The terminal display unit can save or view several recent transaction data to grasp the operation status of the equipment in real time. In accordance with the unmanned requirements, the unmanned related parameters are displayed at the same time, and voice and indicator lights are displayed;

[0032] The backend service management unit primarily handles remote data transmission for mobile charging piles, enabling remote charging, remote control, and telemetry. This device incorporates backend service functionality, enabling IoT-specific functionality and easy integration into the Internet of Things (IoT). This enables remote device status monitoring, management, and operation, giving the mobile charging pile specific cloud management features. In specific implementation, a transmission module integrates data from the charge and discharge control management unit, power conversion unit, terminal display unit, and voice unit. This data is then pushed to a backend server or mobile app via a backend protocol. This server or mobile app can then remotely control the device, performing charging, active data query, and other telemetry and remote control functions. The backend service management unit also manages the charging pile's IoT, including related billing, GIS, and intelligent charging guidance. By linking the charging pile with the backend, payment functionality is enabled, ensuring the entire system meets standard IoT functionality. The integration of a backend server associated with the mobile app allows customers to intelligently manage and control mobile charging piles, enabling unattended charging.

[0033] In summary, through relevant information and data, the output of power unit energy is intelligently managed. At the same time, in conjunction with the relevant data of the energy storage battery, the amount of discharged electrical energy is intelligently managed to improve the life of the system. In addition, according to technical requirements, the data is summarized and sent to the display unit to provide customers or professional maintenance personnel with information about the operating status of the equipment. The mobile power of the mobile charging pile is guaranteed in unattended situations. According to the background database, the information linkage of vehicles, piles and people is intelligently realized, which solves the contradiction between the number of charging piles and the amount of land used.

[0034] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations that come within the meaning and range of equivalents of the claims are intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0035] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A mobile intelligent charging pile system, comprising a charging vehicle, wherein the charging vehicle is provided with at least one charging pile, characterized in that: The system also includes a charge and discharge control management unit for the energy storage device in the mobile charging pile, which obtains the SOC of the energy storage device. When the SOC is lower than a preset threshold, the system selects a corresponding strategy based on the operating status of the charging vehicle to recharge the energy storage device corresponding to the SOC lower than the preset threshold. Among them, the strategies include: When the charging vehicle is not in operation and the current generated by the energy storage device is lower than the preset current value and lasts for more than the preset time, the discharge circuit is automatically disconnected and the charging circuit is closed to enter the charging mode until it is fully charged and then enters the discharge mode; When the charging circuit is closed and enters the charging mode, if the charging pile needs to be moved, it is necessary to restart the charging car key, energy storage device, disconnect the charging circuit, and close the discharge circuit to enter the discharge mode; When the charging vehicle is in motion and the energy storage device reaches the over-discharge condition, the charging vehicle is powered off. After the charging vehicle is finished, the energy storage device automatically disconnects the discharge circuit and closes the charging circuit to enter the charging mode. The mobile intelligent charging pile system further includes a power conversion unit, which performs DC-AC conversion on the input and output voltages of the energy storage device.

2. A mobile intelligent charging pile system according to claim 1, characterized in that: When the energy storage device is discharging, the voltage difference between the output voltage and the voltage of the battery to be charged is less than 2 volts, and the charging contactor is attracted; When the energy storage device is discharged, the output current is limited to less than 5A, and the charging contactor is disconnected. When the energy storage device is not charging, the output voltage is between 24 and 26 volts.

3. A mobile intelligent charging pile system according to claim 1, characterized in that: The preset current value is 5A, and the preset time is 5 minutes.

4. The mobile intelligent charging pile system according to claim 1, characterized in that: The mobile intelligent charging pile system also includes a terminal display unit, which obtains the SOC, total voltage, total current, single cell temperature, voltage extreme value, charging voltage, current, charging time and charging billing of the energy storage device and displays them in real time on the terminal display screen.

5. The mobile intelligent charging pile system according to claim 1, characterized in that: The mobile intelligent charging pile system also includes a voice unit, which provides voice prompts for the content displayed on the terminal display screen in real time.

6. The mobile intelligent charging pile system according to claim 1, characterized in that: The mobile intelligent charging pile system also includes a background service management unit, which integrates the data of the charging and discharging control management unit, the power conversion unit, the terminal display unit, and the voice unit through a transmission module, and pushes it to the background server or mobile phone APP through a background protocol, and at the same time receives remote control instructions from the background server or mobile phone APP.

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