An AC / DC dual-purpose charging pile orderly charging system and charging management method

Abstract

The present invention relates to an orderly charging system for a dual-purpose AC / DC charging pile, which belongs to the field of electric vehicle charging technology, and includes a cloud data platform, a side intelligent coordination gateway, and a two-in-one wireless power control terminal; wherein, one transformer area is correspondingly equipped with a side intelligent coordination gateway; the two-in-one wireless power control terminal and the side intelligent coordination gateway form a wireless communication local area network, and establish a public network communication connection with the cloud data platform; the side intelligent coordination gateway sends power adjustment instructions through the wireless communication local area network, establishes a communication connection with the cloud data platform, and formulates a scheduling strategy in combination with the real-time load of the transformer area and the cloud load forecast; wherein, the cloud data platform generates load forecast data and sends it to the side intelligent coordination gateway, and at the same time serves as an OTA upgrade platform for the two-in-one wireless power control terminal. By adopting the embodiment of the present invention, the orderly charging scheduling of both AC / DC charging piles can be completed in real time and intelligently.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric vehicle charging, and relates to an AC / DC dual-purpose charging pile orderly charging system and a charging management method. Background Art

[0002] As energy problems become increasingly serious, the number of electric vehicles has increased sharply, and charging piles are also being added. Under the charging mode of charging on demand, a large number of electric vehicles are connected to the power grid in an unordered manner, which has brought a huge impact on the smooth operation of the power grid. The problem of "peak on peak" load in the power grid is becoming increasingly serious. For the sake of safe operation of the power grid, there is an urgent need for an orderly charging scheduling strategy that uses the load status of the transformer area as the main reference indicator, adjusts the charging power of the charging pile under different load conditions, reduces the "peak" charging power, and weakens the load impact of the transformer.

[0003] The traditional orderly charging scheduling strategy is mainly a way for customized equipment to receive cloud scheduling instructions, that is, by upgrading the orderly charging function of the charging pile, introducing energy routers and energy controllers, and then the modified charging piles interact with the cloud to achieve scheduling. This method requires a lot of modifications to the original network equipment structure, and two types of modifications are required for DC charging piles and AC charging piles, which makes construction difficult and costly. At the same time, this method of scheduling relies on scheduling instructions issued by the cloud, which is restricted by public network communication conditions and has the defects of instability and high latency. In addition, in this method, the device software does not support remote upgrade functions, and it is difficult to update and maintain the device software. Summary of the invention

[0004] In view of this, the object of the present invention is to provide an orderly charging system and charging management method for AC and DC dual-purpose charging piles, which are used to improve the easy implementation, stability, intelligence and easy maintenance of orderly charging scheduling in multiple areas.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] On the one hand, the present invention provides an AC / DC dual-purpose charging pile orderly charging system, including a cloud data platform, a side intelligent coordination gateway, and a two-in-one wireless power control terminal; wherein one transformer area is correspondingly equipped with one side intelligent coordination gateway; one transformer area is provided with a measuring element and multiple AC or DC charging piles, and each charging pile is correspondingly connected to a two-in-one wireless power control terminal; the measuring element is used to collect real-time load information in the transformer area;

[0007] The two-in-one wireless power control terminal is used to report real-time charging information to the side intelligent coordination gateway; is used to receive power adjustment instructions issued by the side intelligent coordination gateway to adjust the charging power of the charging pile; and is also used to receive and execute upgrade maintenance data and instructions issued by the cloud data platform;

[0008] The side intelligent coordination gateway is used to receive the real-time charging and load information in the transformer area uploaded by the two-in-one wireless power control terminal and the measuring element, and upload it to the cloud data platform; it is used to receive the load forecast data of the corresponding transformer area sent by the cloud data platform; it is also used to formulate a real-time and orderly charging scheduling strategy for the transformer area in combination with the real-time charging and load information in the transformer area and the load forecast data of the transformer area in the future period, and send the power adjustment instruction to the two-in-one wireless power control terminal;

[0009] The cloud data platform is used to receive and store real-time charging and load information in the transformer area reported by the edge intelligent coordination gateway, and analyze the stored historical load data of the same period to generate load forecast data for each transformer area in the future period, and send it to the edge intelligent coordination gateway corresponding to each transformer area; it is also used to directly establish a communication connection with the two-in-one wireless power control terminal and send upgrade and maintenance data and instructions of the two-in-one wireless power control terminal.

[0010] Furthermore, the two-in-one wireless power control terminal adopts a two-in-one switchable three-terminal communication model, and supports orderly secondary processing of charging control guidance signals for two charging modes of electric vehicles, AC or DC, in a serial form.

[0011] Furthermore, each two-in-one wireless power control terminal within a transformer substation forms a star-topology wireless local area network with the side intelligent coordination gateway corresponding to the transformer substation through Lora communication; the star-topology wireless local area network is used for the issuance of power adjustment instructions of the side intelligent coordination gateway and the reporting of charging information of the two-in-one wireless power control terminal.

[0012] Furthermore, the cloud data platform serves as the OTA upgrade platform for the two-in-one wireless power control terminal, and has a bin file issuing function. It uploads new bin files through the web and specifies the two-in-one wireless power control terminal registered on the network to receive the bin files; the two-in-one wireless power control terminal registers with the cloud data platform and establishes a bin file transmission channel, and receives the bin files issued by the cloud data platform in accordance with the custom OTA protocol to complete the remote wireless update and maintenance of the software system.

[0013] Further, the two-in-one wireless power control terminal includes a power management unit, a working mode management unit, a wireless communication unit, an orderly charging core control unit, an AC slow charging vehicle-side BMS simulation unit, an AC slow charging pile-side control guide signal simulation unit, a DC fast charging vehicle-side BMS simulation unit, and a DC fast charging pile-side control guide signal simulation unit;

[0014] The working mode management unit includes a working mode switching unit and an error mode warning unit; the working mode switching unit is used to manually switch the two-in-one wireless power control terminal to an AC mode or a DC mode according to the type of charging pile to which it is connected; the error mode warning unit is used to issue an alarm and stop working when the state detected after actual installation is different from the setting;

[0015] The wireless communication unit includes a Lora communication unit and an OTA function CAT 1 communication unit. The Lora communication unit is used to establish communication with the edge intelligent coordination gateway, report real-time charging information, and receive power adjustment instructions; the OTA function CAT 1 communication unit is used to access the public network to receive the bin file required for the OTA upgrade of the two-in-one wireless power control terminal issued by the cloud data platform;

[0016] The AC slow charging vehicle-side BMS simulation unit is used to simulate the electric vehicle-side BMS communication interface during AC charging and establish a communication connection with the AC charging pile;

[0017] The AC slow charging pile end control guide signal simulation unit is used to simulate the charging pile end during AC charging and establish a communication connection with the electric vehicle;

[0018] The DC fast charging vehicle-side BMS simulation unit is used to simulate the electric vehicle-side BMS communication interface during DC charging and establish a communication connection with the DC charging pile;

[0019] The DC fast charging pile end control guidance signal simulation unit is used to simulate the charging pile end during DC charging and establish a communication connection with the electric vehicle;

[0020] The ordered charging core control unit is used to connect and control the other units, receive the power adjustment instructions issued by the edge intelligent coordination gateway, and adjust the power of the charging pile; and receive and execute the upgrade maintenance data and instructions issued by the cloud data platform;

[0021] The power management unit is used to supply power to each unit.

[0022] Furthermore, the side intelligent coordination gateway includes a power management unit, an orderly charging scheduling central processing unit, a local area network communication unit, and a public network communication unit;

[0023] The orderly charging scheduling central processing unit receives the real-time charging and load information in the transformer area collected by the two-in-one wireless power control terminal and the measuring element through the local area network communication unit, receives the load forecast data of the corresponding transformer area sent by the cloud data platform through the public network communication unit, formulates the real-time orderly charging scheduling strategy for the transformer area, and sends it to the two-in-one wireless power control terminal through the local area network communication unit;

[0024] The power management unit is used to supply power to each unit.

[0025] Furthermore, the cloud data platform, based on the historical load information of each transformer substation stored, increases the weight of the historical load in the same period with a short time span from the current time point, and reduces the weight of the historical load in the same period with a long time span from the current time point in accordance with the time attenuation principle. Based on the historical load data in the same period, it generates future time period load forecast data with a time period of 10 minutes and a total duration of 2 hours, and periodically sends it to the side intelligent coordination gateway corresponding to each transformer substation to participate in orderly charging scheduling.

[0026] On the other hand, the present invention provides an orderly charging management method for an AC / DC dual-purpose charging pile, comprising the following steps:

[0027] S1: The measuring component collects the real-time load information in the transformer area and uploads it to the side intelligent coordination gateway; the two-in-one wireless power control terminal uploads the real-time charging information in the transformer area to the side intelligent coordination gateway;

[0028] S2: The side intelligent coordination gateway uploads the real-time charging and load information in the transformer area to the cloud data platform;

[0029] S3: The cloud data platform receives and stores the real-time charging and load information in the transformer area reported by the edge intelligent coordination gateway, and analyzes the stored historical load data of the same period to generate load forecast data for each transformer area in the future period, and sends it to the edge intelligent coordination gateway corresponding to each transformer area;

[0030] S4: The side intelligent coordination gateway receives the load forecast data of the corresponding transformer area in the future period issued by the cloud data platform, and formulates a real-time orderly charging scheduling strategy for the transformer area based on the real-time charging and load information in the transformer area, and sends power adjustment instructions to each two-in-one wireless power control terminal in the transformer area according to the orderly charging scheduling strategy;

[0031] S5: The two-in-one wireless power control terminal performs secondary processing on the charging control guidance signal according to the power adjustment instruction, adjusts the charging power, and realizes real-time charging power adjustment.

[0032] Furthermore, the working process of the edge intelligent coordination gateway is as follows:

[0033] Initialize first;

[0034] Then, the networking is completed with each two-in-one wireless power control terminal in the transformer area;

[0035] Then, it is detected whether there is a new two-in-one wireless power control terminal connected to the network; if so, the two-in-one wireless power control terminal networking is completed again; if not, it is detected whether the preset upper and lower limit parameters of the load used to distinguish the three load states of the transformer area have changed;

[0036] If there is a change, update the parameters and then determine whether the orderly charging scheduling execution cycle has been reached; if there is no change, directly determine whether the orderly charging scheduling execution cycle has been reached;

[0037] If not, return to update the networking status of the two-in-one wireless power control terminal to determine whether there is a new two-in-one wireless power control terminal requesting to join the network; if it is, obtain the real-time load of the station area at this time, and formulate three scheduling strategies according to the upper and lower limits of the set load rate, and then according to the power adjustment rule table, modify the scheduling strategy based on the future time period load forecast data sent by the cloud to obtain the final orderly charging scheduling strategy;

[0038] Finally, the power adjustment command is sent to the two-in-one wireless power control terminal to adjust the charging power of each charging pile to achieve orderly charging scheduling;

[0039] After the scheduling is completed, the process jumps back to the step of determining whether there is a new two-in-one wireless power control terminal accessing the network, and performs a two-in-one wireless power control terminal networking update, and repeats this cycle to achieve orderly charging scheduling within the station area.

[0040] Furthermore, the working process of the two-in-one wireless power control terminal is as follows:

[0041] First enter the Bootloader program and initialize the Bootloader;

[0042] Then, determine whether there is a new bin file in the Back area of ​​the flash; if so, write the new bin file stored in the Back area into the program running area, and jump to the program running area to execute the program; if not, directly jump to the program running area to execute the program;

[0043] Determine whether the current working mode is DC charging mode or AC charging mode; then execute the corresponding mode orderly charging task;

[0044] During the execution of the Task, check whether a new bin file for OTA upgrade sent by the cloud data platform is received; if received, write the new bin file to the Back area of ​​the flash. After completing the charging task, reset and restart the Bootloader program to complete the software upgrade by relying on the Bootloader execution mechanism.

[0045] The beneficial effect of the present invention is that the present invention can complete the orderly charging scheduling of both AC and DC charging piles in real time and intelligently.

[0046] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0048] Figure 1 A schematic diagram of a structure of an AC / DC dual-purpose orderly charging networking architecture provided by an embodiment of the present invention;

[0049] Figure 2 A schematic diagram of the structure of the hardware system of the two-in-one wireless power control terminal provided by an example of the present invention;

[0050] Figure 3 A schematic diagram of the structure of the hardware system of the edge intelligent coordination gateway provided by the example of the present invention;

[0051] Figure 4 A functional schematic diagram of a cloud data platform provided by an example of the present invention;

[0052] Figure 5 A schematic diagram of the software workflow of a two-in-one wireless power control terminal provided by an example of the present invention;

[0053] Figure 6 A schematic diagram of the software workflow of the edge intelligent coordination gateway provided by the example of the present invention;

[0054] Figure 7 An AC / DC dual-purpose charging pile orderly charging system and charging management method detection flow data and control flow data path schematic diagram provided in an example of the present invention, wherein (a) is a detection flow data path schematic diagram, and (b) is a control flow data path schematic diagram. DETAILED DESCRIPTION

[0055] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0056] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0057] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0058] See also Figure 1 , Figure 1 is a schematic diagram of a structure of an AC / DC dual-purpose orderly charging network architecture provided by an embodiment of the present invention, such as Figure 1 As shown, the cloud data platform of this networking architecture serves as the top layer of the communication architecture. It receives and stores real-time charging and load information in the transformer substation reported by the edge intelligent coordination gateway through 4G / 5G communication. The cloud data platform has powerful data storage and analysis capabilities. It generates load forecasts for future time periods based on the analysis of historical load data stored in the same period. It also sends the load forecast data for each transformer substation to each corresponding edge intelligent coordination gateway through 4G / 5G communication, which serves as one of the reference data for the edge intelligent coordination gateway to formulate an orderly charging scheduling strategy. The cloud data platform directly establishes a communication connection with a large number of two-in-one wireless power control terminals in each substation, and sends bin files to realize remote upgrade and maintenance of the software of each two-in-one wireless power control terminal.

[0059] The embodiment of the present invention realizes the joint scheduling of multiple transformer substations, wherein each transformer substation is equipped with a side intelligent coordination gateway (numbered 1 to n, corresponding to the substation number); the side intelligent coordination gateway obtains the real-time load of the substation measured by the measuring element in real time through HPLC communication as the main reference for the formulation of orderly charging scheduling strategy; the charging piles that have installed the two-in-one wireless power control terminal in each transformer substation accept the scheduling of the side intelligent coordination gateway corresponding to the substation, and each charging pile participating in the orderly charging scheduling needs to install a two-in-one wireless power control terminal (numbered 1 to n, corresponding to the number of the charging pile in the substation); each two-in-one wireless power control terminal in a single transformer substation forms a star-topology wireless local area network with the corresponding side intelligent coordination gateway in the substation through Lora communication, and the star-topology wireless local area network is used for the two-in-one wireless power control terminal in the substation to report charging related information to the corresponding side intelligent coordination gateway, and the side intelligent coordination gateway sends power adjustment instructions to the two-in-one wireless power control terminal in the substation to complete the specific implementation of orderly charging scheduling.

[0060] In the embodiment of the present invention, the two-in-one wireless power control terminal is connected in series between the charging pile and the electric vehicle, is easy to install, and supports both AC and DC charging piles; the two-in-one wireless power control terminal realizes data interaction with the intelligent coordination gateway on the side of the station based on Lora communication, receives power adjustment instructions issued by the intelligent coordination gateway on the side, and reports real-time charging information; the two-in-one wireless power control terminal accesses the public network through 4G CAT1 communication, establishes a communication connection with the cloud data platform, receives the OTA upgrade bin file issued by the cloud data platform, and realizes software upgrade optimization.

[0061] See also Figure 2 , Figure 2 is a schematic diagram of the structure of the hardware system of the two-in-one wireless power control terminal provided by an embodiment of the present invention, such as Figure 2 As shown, the two-in-one wireless power control terminal includes a power management unit, a working mode management unit, a wireless communication unit, an orderly charging core control unit, an AC slow charging vehicle-end BMS simulation unit, an AC slow charging pile-end control guidance signal simulation unit, a DC fast charging vehicle-end BMS simulation unit, and a DC fast charging pile-end control guidance signal simulation unit.

[0062] In the embodiment of the present invention, the power management unit of the two-in-one wireless power control terminal is taken from the 220V AC mains to provide power of various voltage levels required by the terminal;

[0063] In an embodiment of the present invention, the working mode management unit of the two-in-one wireless power control terminal includes a working mode switching unit and an error mode warning unit; wherein the working mode switching unit is used to manually switch the two-in-one wireless power control terminal to an AC charging pile version / DC charging pile version, and manual dialing settings are required before installation; wherein the error mode warning unit is used to issue an alarm and stop working when the state detected during actual use after installation is different from the setting (such as setting the AC charging pile mode but using the DC charging pile, or setting the DC charging pile mode but using the AC charging pile), prompting the administrator to dial the code to switch the working mode;

[0064] In an embodiment of the present invention, the wireless communication unit of the two-in-one wireless power control terminal includes a Lora communication unit and an OTA function CAT 1 communication unit; wherein the Lora communication unit is used to establish communication with the edge intelligent coordination gateway, report real-time charging information and receive power adjustment instructions; wherein the OTA function CAT 1 communication unit is used to access the public network to receive the bin file required for the OTA upgrade of the two-in-one wireless power control terminal issued by the cloud data platform.

[0065] In the embodiment of the present invention, the two-in-one wireless power control terminal is inserted in the middle of the two ends in the two-end communication model in which the charging pile and the electric vehicle are directly connected, so as to construct a new three-end communication model. With respect to the charging pile, the two-in-one wireless power control terminal is equivalent to the electric vehicle, and with respect to the electric vehicle, the two-in-one wireless power control terminal is equivalent to the charging pile; therefore, the basic function of the two-in-one wireless power control terminal as the middle end of the communication is not to hinder the communication between the charging pile and the electric vehicle under the original two-end communication model, which requires it to have a high response speed and a rich peripheral interface that supports AC / DC charging control guidance signal processing.

[0066] In an embodiment of the present invention, the two-in-one wireless power control terminal serves as the communication intermediate end of the three-terminal communication model, and needs to perform secondary processing on the AC / DC control guide signal; wherein the AC charging control guide signal is a PWM wave on the CP signal line, and the DC charging control guide signal is a CAN bus communication signal; wherein the AC slow charging vehicle-end BMS simulation unit is used to simulate the BMS communication interface of the electric vehicle end during AC charging, and establish a communication connection with the AC charging pile; the AC slow charging pile-end control guide signal simulation unit is used to simulate the charging pile end during AC charging, and establish a communication connection with the electric vehicle; wherein the DC fast charging vehicle-end BMS simulation unit is used to simulate the BMS communication interface of the electric vehicle end during DC charging, and establish a communication connection with the DC charging pile; the DC fast charging pile-end control guide signal simulation unit is used to simulate the charging pile end during DC charging, and establish a communication connection with the electric vehicle.

[0067] See also Figure 3 , Figure 3is a schematic diagram of the hardware system structure of the edge intelligent coordination gateway provided by an embodiment of the present invention, such as Figure 3 As shown, the edge intelligent coordination gateway includes a power management unit, an orderly charging scheduling central processing unit, a local area network communication unit, and a public network communication unit.

[0068] In the embodiment of the present invention, the power management unit of the edge intelligent coordination gateway is taken from the 220V AC mains power to provide power of various voltage levels required by the terminal;

[0069] In the embodiment of the present invention, the edge intelligent coordination gateway needs to combine the real-time load of the substation and the load forecast data of the substation in the future time period to formulate an orderly charging scheduling strategy and execute orderly charging scheduling in real time, which requires it to have powerful data processing capabilities; in addition, the edge intelligent coordination gateway needs to report a large amount of load information, charging information, etc. of the substation in real time, so it is necessary to establish a high-speed and reliable network communication connection with the public network, so the central processing unit needs to support the communication interface corresponding to the high-speed network.

[0070] See also Figure 4 , Figure 4 It is a functional diagram of the cloud data platform provided in an embodiment of the present invention. As the general platform for data management, the cloud data platform establishes communication connections with the edge intelligent coordination gateways and two-in-one wireless power control terminals of multiple substations. It mainly includes four functions: real-time load and charging information data acquisition of multiple transformer substations, storage of historical load and charging information of multiple transformer substations, load prediction of multiple transformer substations in the future period, and OTA upgrade of the two-in-one wireless power control terminal.

[0071] In the embodiment of the present invention, the cloud data platform receives real-time load and charging information data reported by multiple transformer area side intelligent coordination gateways.

[0072] In the embodiment of the present invention, the cloud data platform stores the real-time load and charging information data reported by multiple transformer substations as historical reference data for predicting the load of multiple transformer substations in future time periods.

[0073] In the embodiment of the present invention, the cloud data platform, based on the historical load information of each substation stored, increases the weight of the load in the historical same period with a short time span from the current time point, and reduces the weight of the load in the historical same period with a long time span from the current time point in accordance with the time attenuation principle. Based on the historical load data in the same period, the cloud data platform generates the load forecast data for the future time period with a time period of 10 minutes and a total duration of 2 hours, and periodically sends it to the side intelligent coordination gateway corresponding to each substation to participate in orderly charging scheduling.

[0074] In the embodiment of the present invention, the cloud data platform has a web-side human-computer interaction interface. The administrator uploads the bin file required for upgrading the two-in-one wireless power control terminal through the web-side, and specifies the two-in-one wireless power control terminal registered on the network to receive the bin file through the http protocol, thereby realizing OTA remote upgrade and maintenance of the two-in-one wireless power control terminal.

[0075] See also Figure 5 , Figure 5 It is a software workflow diagram of a two-in-one wireless power control terminal provided by an example of the present invention, and its software work execution process is: first enter the Bootloader program and initialize the Bootloader; then, determine whether there is a new bin file in the Back area of ​​the flash; if so, write the new bin file stored in the Back area into the APP program running area, and jump to the APP program running area to execute the APP program; if not, directly jump to the APP program running area to execute the APP program.

[0076] After entering the APP program, the APP is initialized; then, it is determined whether the current working mode is DC charging mode or AC charging mode; then the corresponding mode orderly charging Task is executed; during the Task execution, it is detected whether a new bin file for OTA upgrade sent by the cloud data center is received; if received, the new bin file is written to the Back area of ​​the flash. After completing this charging task, it is reset and restarted from the Bootloader program, relying on the Bootloader execution mechanism to complete the software upgrade.

[0077] See also Figure 6 , Figure 6It is a software workflow diagram of the edge intelligent coordination gateway provided by the example of the present invention, and its software work execution process is: first initialize; then, each two-in-one wireless power control terminal in the same area completes networking; then, detect whether there is a new two-in-one wireless power control terminal connected to the network; if so, re-complete the two-in-one wireless power control terminal networking; if not, detect whether the preset upper and lower limit parameters of the load used to distinguish the three load states of the transformer area have changed; if there is a change, update the parameters, and then judge whether it has reached the orderly charging scheduling execution cycle; if there is no change, directly judge whether it has reached the orderly charging scheduling execution cycle; if not, return to update the networking status of the two-in-one wireless power control terminal, and judge whether there is a new two-in-one wireless power control terminal requesting to join the network; if it has arrived, obtain the real-time load of the area at this time, and formulate three scheduling strategies according to the upper and lower limits of the set load rate, and then according to the power adjustment rule table, based on the future time period load forecast data issued by the cloud, the scheduling strategy is corrected to obtain the final orderly charging scheduling strategy; finally, send a power adjustment instruction to the two-in-one wireless power control terminal to adjust the charging power of each charging pile to achieve orderly charging scheduling. After the scheduling is completed, the process jumps back to the step of determining whether there is a new two-in-one wireless power control terminal accessing the network, and performs a two-in-one wireless power control terminal networking update. This cycle repeats to achieve orderly charging scheduling within the station area.

[0078] See also Figure 7 , Figure 7 A schematic diagram of detection flow data and control flow data paths for an AC / DC dual-purpose charging pile orderly charging system and a charging management method provided in an example of the present invention, wherein (a) is a schematic diagram of the detection flow data path, and (b) is a schematic diagram of the control flow data path; the detection flow data path includes: the measuring element detects and reports the real-time load of the substation to the edge intelligent coordination gateway, the two-in-one wireless power control terminal reports the real-time charging information to the edge intelligent coordination gateway, the edge intelligent coordination gateway reports the real-time charging information and load information of the substation to the cloud data platform, and the cloud data platform sends the load forecast data for the future time period to the edge intelligent coordination gateway; the control flow data path includes: the edge intelligent coordination gateway sends a power adjustment instruction to each two-in-one wireless power control terminal in the transformer substation, and the two-in-one wireless power control terminal performs secondary processing on the charging control guidance signal according to the received power adjustment instruction, adjusts the charging power, and realizes real-time charging power adjustment.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. An AC / DC dual-purpose charging pile orderly charging system, characterized in that: It includes a cloud data platform, a side intelligent coordination gateway, and a two-in-one wireless power control terminal; wherein one transformer area is equipped with one side intelligent coordination gateway; one transformer area is equipped with a measuring element and multiple AC or DC charging piles, and each charging pile is connected to a two-in-one wireless power control terminal; the measuring element is used to collect real-time load information in the transformer area; The two-in-one wireless power control terminal is used to report real-time charging information to the side intelligent coordination gateway; to receive power adjustment instructions issued by the side intelligent coordination gateway to adjust the power of the charging pile; and to receive and execute upgrade maintenance data and instructions issued by the cloud data platform; The side intelligent coordination gateway is used to receive the real-time charging and load information in the transformer area uploaded by the two-in-one wireless power control terminal and the measuring element, and upload it to the cloud data platform; it is used to receive the load forecast data of the corresponding transformer area sent by the cloud data platform; it is also used to formulate a real-time and orderly charging scheduling strategy for the transformer area in combination with the real-time charging and load information in the transformer area and the load forecast data of the transformer area in the future period, and send the power adjustment instruction to the two-in-one wireless power control terminal; The cloud data platform is used to receive and store real-time charging and load information in the transformer area reported by the edge intelligent coordination gateway, and analyze the stored historical load data of the same period to generate load forecast data for each transformer area in the future period, and send it to the edge intelligent coordination gateway corresponding to each transformer area; it is also used to directly establish a communication connection with the two-in-one wireless power control terminal and send upgrade and maintenance data and instructions of the two-in-one wireless power control terminal.

2. The AC / DC dual-purpose charging pile orderly charging system according to claim 1 is characterized in that: The two-in-one wireless power control terminal adopts a two-in-one switchable three-terminal communication model, and supports orderly secondary processing of charging control guidance signals for electric vehicles in AC or DC charging modes in a serial form.

3. The AC / DC dual-purpose charging pile orderly charging system according to claim 1 is characterized in that: Each two-in-one wireless power control terminal in a transformer substation forms a star-topology wireless local area network with the side intelligent coordination gateway corresponding to the transformer substation through Lora communication; the star-topology wireless local area network is used for the issuance of power adjustment instructions of the side intelligent coordination gateway and the reporting of charging information of the two-in-one wireless power control terminal.

4. The AC / DC dual-purpose charging pile orderly charging system according to claim 1 is characterized in that: The cloud data platform serves as the OTA upgrade platform for the two-in-one wireless power control terminal, and has a bin file issuing function. It uploads new bin files through the web and specifies the two-in-one wireless power control terminal registered on the network to receive the bin files. The two-in-one wireless power control terminal registers with the cloud data platform and establishes a bin file transmission channel. It receives the bin files issued by the cloud data platform according to the custom OTA protocol to complete the remote wireless update and maintenance of the software system.

5. The AC / DC dual-purpose charging pile orderly charging system according to claim 1 is characterized in that: The two-in-one wireless power control terminal includes a power management unit, a working mode management unit, a wireless communication unit, an orderly charging core control unit, an AC slow charging vehicle-side BMS simulation unit, an AC slow charging pile-side control guide signal simulation unit, a DC fast charging vehicle-side BMS simulation unit, and a DC fast charging pile-side control guide signal simulation unit; The working mode management unit includes a working mode switching unit and an error mode warning unit; the working mode switching unit is used to manually switch the two-in-one wireless power control terminal to an AC mode or a DC mode according to the type of charging pile to which it is connected; the error mode warning unit is used to issue an alarm and stop working when the state detected after actual installation is different from the setting; The wireless communication unit includes a Lora communication unit and an OTA function CAT 1 communication unit. The Lora communication unit is used to establish communication with the edge intelligent coordination gateway, report real-time charging information, and receive power adjustment instructions; the OTA function CAT1 communication unit is used to access the public network to receive the bin file required for OTA upgrade of the two-in-one wireless power control terminal issued by the cloud data platform; The AC slow charging vehicle-side BMS simulation unit is used to simulate the electric vehicle-side BMS communication interface during AC charging and establish a communication connection with the AC charging pile; The AC slow charging pile end control guide signal simulation unit is used to simulate the charging pile end during AC charging and establish a communication connection with the electric vehicle; The DC fast charging vehicle-side BMS simulation unit is used to simulate the electric vehicle-side BMS communication interface during DC charging and establish a communication connection with the DC charging pile; The DC fast charging pile end control guidance signal simulation unit is used to simulate the charging pile end during DC charging and establish a communication connection with the electric vehicle; The ordered charging core control unit is used to connect and control the other units, receive the power adjustment instructions issued by the edge intelligent coordination gateway, and adjust the power of the charging pile; and receive and execute the upgrade maintenance data and instructions issued by the cloud data platform; The power management unit is used to supply power to each unit.

6. The AC / DC dual-purpose charging pile orderly charging system according to claim 1 is characterized in that: The side intelligent coordination gateway includes a power management unit, an orderly charging scheduling central processing unit, a local area network communication unit, and a public network communication unit; The orderly charging scheduling central processing unit receives the real-time charging and load information in the transformer area collected by the two-in-one wireless power control terminal and the measuring element through the local area network communication unit, receives the load forecast data of the corresponding transformer area sent by the cloud data platform through the public network communication unit, formulates the real-time orderly charging scheduling strategy for the transformer area, and sends it to the two-in-one wireless power control terminal through the local area network communication unit; The power management unit is used to supply power to each unit.

7. The AC / DC dual-purpose charging pile orderly charging system according to claim 1 is characterized in that: Based on the historical load information of each transformer substation stored in the cloud data platform, according to the time attenuation principle, the weight of the historical load in the same period with a short time span from the current time point is increased, and the weight of the historical load in the same period with a long time span from the current time point is reduced. Based on the historical load data in the same period, future time period load forecast data with a time period of 10 minutes and a total duration of 2 hours is generated, and periodically sent to the side intelligent coordination gateway corresponding to each transformer substation to participate in orderly charging scheduling.

8. A method for orderly charging management of AC and DC dual-purpose charging piles, characterized in that: The following steps are involved: S1: The measuring component collects the real-time load information in the transformer area and uploads it to the side intelligent coordination gateway; the two-in-one wireless power control terminal uploads the real-time charging information in the transformer area to the side intelligent coordination gateway; S2: The side intelligent coordination gateway uploads the real-time charging and load information in the transformer area to the cloud data platform; S3: The cloud data platform receives and stores the real-time charging and load information in the transformer area reported by the edge intelligent coordination gateway, and analyzes the stored historical load data of the same period to generate load forecast data for each transformer area in the future period, and sends it to the edge intelligent coordination gateway corresponding to each transformer area; S4: The side intelligent coordination gateway receives the load forecast data of the corresponding transformer area in the future period issued by the cloud data platform, and formulates a real-time orderly charging scheduling strategy for the transformer area based on the real-time charging and load information in the transformer area, and sends power adjustment instructions to each two-in-one wireless power control terminal in the transformer area according to the orderly charging scheduling strategy; S5: The two-in-one wireless power control terminal performs secondary processing on the charging control guidance signal according to the power adjustment instruction, adjusts the charging power, and realizes real-time charging power adjustment.

9. The method for orderly charging management of AC / DC dual-purpose charging piles according to claim 8, characterized in that: The working process of the edge intelligent coordination gateway is as follows: Initialize first; Then, the networking is completed with each two-in-one wireless power control terminal in the transformer area; Then, it is detected whether there is a new two-in-one wireless power control terminal connected to the network; if so, the two-in-one wireless power control terminal networking is completed again; if not, it is detected whether the preset upper and lower limit parameters of the load used to distinguish the three load states of the transformer area have changed; If there is a change, update the parameters and then determine whether the orderly charging scheduling execution cycle has been reached; If there is no change, it is directly determined whether the orderly charging scheduling execution cycle has been reached; If not, return to update the networking status of the two-in-one wireless power control terminal to determine whether there is a new two-in-one wireless power control terminal requesting to join the network; If it arrives, obtain the real-time load of the area at this time, formulate three scheduling strategies according to the upper and lower limits of the set load rate, and then modify the scheduling strategy according to the power adjustment rule table based on the future time period load forecast data sent by the cloud to obtain the final orderly charging scheduling strategy; Finally, the power adjustment command is sent to the two-in-one wireless power control terminal to adjust the charging power of each charging pile to achieve orderly charging scheduling; After the scheduling is completed, the process jumps back to the step of determining whether there is a new two-in-one wireless power control terminal accessing the network, and performs a two-in-one wireless power control terminal networking update, and repeats this cycle to achieve orderly charging scheduling within the station area.

10. The method for orderly charging management of AC / DC dual-purpose charging piles according to claim 8, characterized in that: The working process of the two-in-one wireless power control terminal is as follows: First enter the Bootloader program and initialize the Bootloader; Then, determine whether there is a new bin file in the Back area of ​​the flash; if so, write the new bin file stored in the Back area into the program running area, and jump to the program running area to execute the program; if not, directly jump to the program running area to execute the program; Determine whether the current working mode is DC charging mode or AC charging mode; then execute the corresponding mode orderly charging task; During the execution of the Task, check whether a new bin file for OTA upgrade sent by the cloud data platform is received; if received, write the new bin file to the Back area of ​​the flash. After completing the charging task, reset and restart the Bootloader program to complete the software upgrade by relying on the Bootloader execution mechanism.

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