CN115303107A - Centralized charging control system and method for electric automobile - Google Patents
Centralized charging control system and method for electric automobile Download PDFInfo
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- CN115303107A CN115303107A CN202211062988.5A CN202211062988A CN115303107A CN 115303107 A CN115303107 A CN 115303107A CN 202211062988 A CN202211062988 A CN 202211062988A CN 115303107 A CN115303107 A CN 115303107A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/66—Data transfer between charging stations and vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
Abstract
The application provides an electric automobile centralized charging control system and method, wherein the system comprises: the local terminal box is connected with the centralized control subsystem; the on-site terminal box is used for sending the charging information of the electric automobile input by a user to the centralized control subsystem; the centralized control subsystem comprises a centralized control device and is used for receiving charging information of the electric automobile, determining a queuing sequence and estimated charging time of the electric automobile, and then sending the queuing sequence and the estimated charging time of the electric automobile to the on-site terminal box. The technical scheme provided by the application solves the problems of too high investment and impact of large load fluctuation on the power grid of a conventional power supply and distribution system caused by overlarge charging power of a large number of electric automobiles, and has the advantages of flexible operation, high intelligent degree and high reliability.
Description
Technical Field
The application relates to the field of centralized charging control, in particular to a centralized charging control system and method for an electric automobile.
Background
The electric automobile refers to a new energy vehicle which accords with various national road traffic safety regulations, takes a vehicle-mounted power supply as a driving force and drives wheels to rotate through a motor. With the continuous improvement of environmental protection consciousness of people, the technical innovation and the product research and development of the electric automobile gradually become the concern of people. Compare in traditional energy car, electric automobile advantage mainly has: (1) The energy utilization rate is higher, the energy-saving effect is good, and the requirements on traditional energy sources such as petroleum and the like can be effectively reduced; (2) The environment-friendly effect is good, zero emission of waste gas is realized, and the noise pollution is low; (3) The intelligent degree is high, can realize multiple functions such as autopilot, intelligent control, audio-visual amusement.
In recent years, the popularity and the market share of electric vehicles have become higher and higher, and the electric vehicles have entered into thousands of households. In 2022, the production and sales of electric vehicles are rapidly increasing once a quarter, and the market share is 19.3% when two electric vehicles are more than one million. With the development of the technology, the endurance mileage of the electric vehicle is increased, the battery capacity is increased, the charging power is also increased, which generally reaches dozens to more than one hundred kilowatts, and most electric vehicles have two modes of fast charging and slow charging. The charging power in the fast charging mode is several times that in the slow charging mode.
The charging problem of the electric automobile is a key point for replacing a large number of traditional energy vehicles by the electric automobile. In an area with concentrated electric automobile parking, when a plurality of electric automobiles start to be charged simultaneously in a short time, the total current of a power supply and distribution system can reach thousands of amperes, according to a conventional power supply and distribution design method, the cost of newly adding a transformer, a low-voltage power distribution cabinet and a power cable is very high, and the impact of the sudden increase and reduction of the load with high power on a power grid is large, so that the operation safety of the power grid is influenced.
Disclosure of Invention
The application provides a centralized charging control system and method for an electric vehicle, which at least solve the technical problems that the impact of high-power load sudden increase and reduction on a power grid is large and the operation safety of the power grid is influenced.
The embodiment of the first aspect of this application provides a charge control system is concentrated to electric automobile, includes: the system comprises a local terminal box and a centralized control subsystem, wherein the local terminal box is connected with the centralized control subsystem;
the on-site terminal box is used for sending the charging information of the electric automobile input by a user to the centralized control subsystem;
the centralized control subsystem comprises a centralized control device, the centralized control device is used for receiving charging information of the electric automobile, determining a queuing sequence and estimated charging time of the electric automobile based on the charging information, and then sending the queuing sequence and the estimated charging time of the electric automobile to the on-site terminal box;
the on-site terminal box is also used for displaying the queuing sequence of the electric automobile and estimating the charging time.
Preferably, the centralized control subsystem further comprises: the system comprises a main power cabinet, N regional power boxes, N power main lines and N communication buses;
the main power cabinet is respectively connected with N regional power boxes and respectively supplies power to the on-site terminal box through N power main lines;
the centralized control device is connected with local terminal boxes corresponding to all areas through N communication buses respectively, and the communication buses are used for information transmission between the centralized control subsystem and the local terminal boxes;
each area is divided based on the position of the charging piles, the number of the charging piles and the total charging power;
the charging piles correspond to the on-site terminal boxes one by one.
Preferably, the on-site terminal box comprises an embedded controller and an electrical device, wherein the embedded controller is connected with the electrical device;
the embedded controller is used for acquiring charging information of the electric charging automobile input by a user and sending the charging information to the centralized control device through the communication bus;
the embedded controller is also used for controlling the starting and stopping of the charging pile and acquiring the starting and stopping information of the charging pile;
the embedded controller is also used for sending information of disconnection with the power supply main line to the electrical device when the on-site terminal box has a fault, and acquiring the connection information of the electrical device and the power supply main line;
the electric device comprises a circuit breaker and a current transformer, wherein the circuit breaker is used for disconnecting the connection with the power main line based on the information sent by the embedded controller; the circuit breaker is provided with an electronic release;
the current transformer is used for monitoring the real-time charging power and the charging current value of the charging pile.
Further, the embedded controller includes: the device comprises a controller, a touch screen, a digital quantity input/output module, an analog quantity input/output module and a communication module; the controller is respectively connected with the touch screen, the digital quantity input/output module, the analog quantity input/output module and the communication module, and the communication module is connected with the communication bus;
the touch screen is used for receiving charging information of the electric automobile input by a user and sending the charging information to the controller;
the digital quantity input and output module is used for controlling the starting and stopping of the charging pile, acquiring the starting and stopping information of the charging pile and sending the starting and stopping information to the controller;
the digital quantity input and output module is also used for sending information of disconnection with the power main line to the circuit breaker when the on-site terminal box has a fault, acquiring the disconnection information of the circuit breaker and the power main line, and sending the disconnection information to the controller;
the analog input/output module is used for acquiring the real-time charging power and the charging current value of the charging pile acquired by the current transformer and transmitting the real-time charging power and the charging current value to the controller;
the controller is used for sending the charging information, the start-stop information, the cut-off information, the real-time charging power and the charging current value to the centralized control device through the communication module and sending the real-time charging power and the start-stop information to the touch screen;
the controller is also used for receiving the queuing sequence and the estimated charging time of the electric automobile sent by the centralized control device through the communication module, and sending the queuing sequence and the estimated charging time of the electric automobile to the touch screen;
the touch screen is also used for displaying the real-time charging power, the start-stop information, the queuing sequence and the estimated charging time of the charging pile.
Further, the controller is further configured to determine a charging condition of the battery car based on the magnitude of the charging current value.
Further, the embedded controller further includes: the storage module is connected with the controller;
the storage module is used for storing the charging information of the user and sending the charging information to the controller when the user is charged again;
the controller is further configured to receive the charging information sent by the storage module.
The embodiment of the second aspect of the present application provides a centralized charging control method for electric vehicles, where the method includes:
step 1: the method comprises the steps of obtaining charging information of the electric automobile to be charged, which is input by a user, and sending the charging information to a centralized control subsystem;
step 2: the centralized control subsystem determines a queuing sequence and estimated charging time information of the electric vehicle to be charged based on the charging information, the starting and stopping information, the switching-off information, the real-time charging power and the charging current value of each charging pile;
and step 3: sending the queuing sequence and the estimated charging time information of the electric automobile to be charged to a local terminal box, and if the user receives the queuing sequence and the estimated charging time information of the electric automobile to be charged, charging the queuing sequence, and entering the step 4; otherwise, the user inputs the charging information again and returns to the step 1, or abandons the charging;
and 4, step 4: and when the charging time is equal to the charging time set by the user or the real-time charging power is smaller than a preset charging power threshold, the current user finishes charging.
Preferably, the method further comprises:
before the electric automobile to be charged is charged, determining charging power corresponding to a region to which the electric automobile belongs when the electric automobile is charged based on charging information of the electric automobile to be charged input by a user and real-time power at the current moment;
and judging whether the charging power corresponding to the region is less than or equal to a preset maximum value of the charging power of the charging region, if so, charging, and otherwise, continuing to wait.
An embodiment of a third aspect of the present application provides an electronic device, including: memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method as described in the embodiments of the first aspect when executing the program.
An embodiment of a fourth aspect of the present application provides a computer-readable storage medium, on which a computer program is stored, which when executed by a processor implements the method according to the embodiment of the first aspect.
The technical scheme provided by the embodiment of the application at least has the following beneficial effects:
the application provides a centralized charging control system and method for an electric automobile, wherein the system comprises: the local terminal box is connected with the centralized control subsystem; the on-site terminal box is used for sending the charging information of the electric automobile input by a user to the centralized control subsystem; the centralized control subsystem comprises a centralized control device, the centralized control device is used for receiving charging information of the electric automobile, determining a queuing sequence and estimated charging time of the electric automobile based on the charging information, and then sending the queuing sequence and estimated charging time of the electric automobile to the on-site terminal box; the on-site terminal box is also used for displaying the queuing sequence of the electric automobile and estimating the charging time. The technical scheme provided by the application reduces the impact problem of heavy load fluctuation on the power grid, and has the advantages of flexible operation, high intelligent degree and high reliability.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a block diagram of an electric vehicle centralized charging control system according to an embodiment of the present application;
FIG. 2 is a block diagram of a centralized control subsystem provided in accordance with one embodiment of the present application;
FIG. 3 is a block diagram of an on-site terminal enclosure provided in accordance with one embodiment of the present application;
fig. 4 is an overall schematic diagram of an electric vehicle centralized charging control system according to an embodiment of the present application;
fig. 5 is a flowchart of a centralized charging control method for an electric vehicle according to an embodiment of the present application;
fig. 6 is a detailed flowchart of a centralized charging control method for an electric vehicle according to an embodiment of the present application;
description of the drawings:
the system comprises a local terminal box 1, a centralized control subsystem 2, a centralized control device 2-1, a main power cabinet 2-2, a regional power box 2-3, a power main 2-4, a communication bus 2-5, an embedded controller 1-1, an electrical device 1-2, a circuit breaker 1-2-1, a current transformer 1-2-2, a controller 1-1-1, a touch screen 1-1-2, a digital quantity input and output module 1-1-3, an analog quantity input and output module 1-1-4, a communication module 1-1-5 and a storage module 1-1-6.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.
The application provides an electric automobile concentrates charge control system and method, wherein the system includes: the local terminal box is connected with the centralized control subsystem; the on-site terminal box is used for sending the charging information of the electric automobile input by a user to the centralized control subsystem; the centralized control subsystem comprises a centralized control device, the centralized control device is used for receiving charging information of the electric automobile, determining a queuing sequence and estimated charging time of the electric automobile based on the charging information, and then sending the queuing sequence and the estimated charging time of the electric automobile to the on-site terminal box; the on-site terminal box is also used for displaying the queuing sequence of the electric automobile and estimating the charging time. The technical scheme provided by the application reduces the impact problem of heavy load fluctuation on the power grid, and has the advantages of flexible operation, high intelligent degree and high reliability.
The electric vehicle centralized charging control system and method according to the embodiments of the present application are described below with reference to the drawings.
Example one
Fig. 1 is a block diagram of a centralized charging control system for an electric vehicle according to an embodiment of the present application, as shown in fig. 1, including: the system comprises an on-site terminal box 1 and a centralized control subsystem 2, wherein the on-site terminal box 1 is connected with the centralized control subsystem 2;
the on-site terminal box 1 is used for sending the charging information of the electric automobile input by a user to the centralized control subsystem 2;
the centralized control subsystem 2 comprises a centralized control device 2-1, wherein the centralized control device 2-1 is used for receiving charging information of an electric automobile, determining a queuing sequence and estimated charging time of the electric automobile based on the charging information, and then sending the queuing sequence and estimated charging time of the electric automobile to the on-site terminal box 1;
the on-site terminal box 1 is also used for displaying the queuing sequence of the electric automobile and estimating the charging time.
In the embodiment of the present disclosure, as shown in fig. 2, the centralized control subsystem 2 further includes: the system comprises a main power cabinet 2-2, N regional power boxes 2-3, N power main lines 2-4 and N communication buses 2-5;
the main power cabinet 2-2 is respectively connected with N regional power boxes 2-3 and respectively supplies power to the on-site terminal box 1 through N power main lines 2-4;
the centralized control device 2-1 is respectively connected with local terminal boxes 1 corresponding to each region through N communication buses 2-5, and the communication buses 2-5 are used for information transmission between the centralized control subsystem 2 and the local terminal boxes 1;
each area is divided based on the position of the charging piles, the number of the charging piles and the total charging power;
the charging piles correspond to the on-site terminal boxes 1 one by one.
It should be noted that, in the division of the region, the charging piles close to each other are preferentially divided into the same region, which is beneficial to the convenience of wiring and the reduction of the line cost. The number of the charging piles in a single area and the total charging power are selected according to the current-carrying capacity of the power cable of the main power distribution line, the current-carrying capacity of the power cable of the main power distribution line is preferably 150-300A, too small current causes more area division, more complex equipment of the system and large investment, too large current causes too large cable diameter, cable connection is difficult, and the cable utilization rate is low. The maximum charging power for a single zone is:
wherein P is the maximum charging power of the region, i.e. the total charging power, U is the system voltage, I is the maximum current carrying capacity of the system, i.e. the maximum current carrying capacity of the cable, P i Charging power t of the electric vehicle charged by the ith charging pile in the area i Charging time of the electric vehicle charged by the ith charging pile, I is the total number of the charging piles in the area, and T is a period of centralized charging, such as the time from work to work of an enterprise parking lot and the time from work to work next day of a community parking lot.
In the embodiment of the present disclosure, the centralized control subsystem 2 is further used for man-machine interaction, that is, daily management and monitoring of the centralized charging control system of the electric vehicle by operation maintenance personnel.
It should be noted that the centralized control subsystem 2 is a brain of the whole system, hardware of the centralized control subsystem is a high-performance industrial personal computer, a software system is developed by high-level programming languages such as C + +, java, python and the like, and functions such as database management, logic calculation and control, man-machine interaction and the like are realized, wherein the database function mainly manages basic information of all electric vehicles, including charging power, charging mode, charging time, charging priority and the like, the logic calculation and control function mainly distributes charging sequence and charging time according to charging requirements and equipment parameters of all electric vehicles, and the man-machine interaction function is used for daily management and monitoring of operation and maintenance personnel on the system.
The main power cabinet 2-2 and the regional power box 2-3 are conventional low-voltage power distribution devices and have the functions of electric energy distribution, power supply disconnection, short-circuit protection, overload protection, overvoltage protection, low-voltage protection and the like; the power supply and distribution adopt a three-phase four-wire system for power supply; the main power cabinet 2-2 is connected to each regional power box 2-3 by using power cables in a radiation manner; the power trunk 2-4 is a power cable, the head end of the power cable is connected with the regional power box 2-3, the other end of the power cable is connected in series with each local terminal box 1 in the region in sequence in a hand-pulling mode, and the mode can effectively reduce the using amount of the power cable.
In the embodiment of the present disclosure, as shown in fig. 3, the on-site terminal box 1 includes an embedded controller 1-1 and an electrical device 1-2, wherein the embedded controller 1-1 is connected to the electrical device 1-2;
the embedded controller 1-1 is used for acquiring charging information of the electric charging automobile input by a user and sending the charging information to the centralized control device 2-1 through the communication bus;
the embedded controller 1-1 is further configured to control the charging pile to start and stop and acquire start and stop information of the charging pile;
the embedded controller 1-1 is further configured to send information of disconnection from the power supply trunk line 2-4 to the electrical device when the local terminal box fails, and acquire connection information of the electrical device 1-2 and the power supply trunk line 2-4;
the electric device 1-2 comprises a circuit breaker 1-2-1 and a current transformer 1-2-2, wherein the circuit breaker 1-2-1 is used for disconnecting the connection with the power main 2-4 based on the information sent by the embedded controller 1-1; the circuit breaker 1-2-1 is a circuit breaker with an electronic release;
the current transformer 1-2-2 is used for monitoring the real-time charging power and the charging current value of the charging pile.
Further, as shown in fig. 3, the embedded controller 1-1 includes: the system comprises a controller 1-1-1, a touch screen 1-1-2, a digital input/output module 1-1-3, an analog input/output module 1-1-4 and a communication module 1-1-5; the controller 1-1-1 is respectively connected with the touch screen 1-1-2, the digital quantity input and output module 1-1-3, the analog quantity input and output module 1-1-4 and the communication module 1-1-5, and the communication module 1-1-5 is connected with the communication bus 2-5;
the touch screen 1-1-2 is used for receiving charging information of the electric automobile input by a user and sending the charging information to the controller 1-1-1;
the digital quantity input and output module 1-1-3 is used for controlling the starting and stopping of the charging pile, acquiring the starting and stopping information of the charging pile and sending the starting and stopping information to the controller 1-1-1;
the digital quantity input and output module 1-1-3 is further configured to send information of disconnection from the power main 2-4 to the circuit breaker 1-2-1 when the local terminal box 1 has a fault, acquire disconnection information of the circuit breaker 1-2-1 and the power main 2-4, and send the disconnection information to the controller 1-1-1;
the analog input/output module 1-1-4 is used for acquiring the real-time charging power and the charging current value of the charging pile acquired by the current transformer 1-2-2 and sending the real-time charging power and the charging current value to the controller 1-1-1;
the controller 1-1-1 is configured to send the charging information, the start-stop information, the cut-off information, the real-time charging power and the charging current value to the centralized control device 2-1 through the communication module 1-1-5, and send the real-time charging power and the start-stop information to the touch screen 1-1-2;
the controller 1-1-1 is further configured to receive the queuing sequence and the estimated charging time of the electric vehicle, which are sent by the centralized control device 2-1 through the communication module 1-1-5, and send the queuing sequence and the estimated charging time of the electric vehicle to the touch screen 1-1-2;
the touch screen 1-1-2 is further used for displaying real-time charging power, start-stop information, a queuing sequence and estimated charging time of the charging pile.
In the embodiment of the present disclosure, the controller 1-1-1 is further configured to determine a charging condition of the battery car based on the magnitude of the charging current value.
The embedded controller 1-1 further includes: the storage module 1-1-6, the storage module 1-1-6 is connected with the controller 1-1-1;
the storage module 1-1-6 is used for storing the charging information of the user and sending the charging information to the controller 1-1-1 when the user is charged again;
the controller 1-1-1 is further configured to receive charging information sent by the storage module 1-1-6.
It should be noted that the embedded controller 1-1 takes an STM32 microcontroller, i.e., the controller 1-1-1, or other commonly used ARM processors as a core, and expands the communication module 1-1-5, the digital input/output module 1-1-3, the analog input/output module 1-1-4, the touch screen 1-1-2, and the EEPROM (electrically erasable and programmable read only memory), i.e., the storage module 1-1-6. A user inputs information such as charging power, charging time, charging priority and the like through the touch screen 1-1-2, and state information such as real-time charging power, charged time and the like can be acquired from the touch screen 1-1-2. The storage module 1-1-6 is used for storing the charging information of the user, and the trouble of inputting every time is avoided under the condition that the user is relatively fixed. The digital quantity input and output module 1-1-3 is used for controlling the on-off of the circuit breaker 1-2-1 and the on-off of the charging pile, and acquiring the on-off state and the on-off information of the circuit breaker. The analog input and output module 1-1-4 is used for collecting signals of the current transformer 1-2-2 to obtain a value of charging current, the communication module 1-1-5 is communicated with the centralized control device 2-1 through the communication bus 2-5 to transmit state information of equipment and requests of users and obtain instructions of the centralized control device 2-1, the communication bus 2-5 adopts an RS485 bus with high reliability and low cost, and a common modbus-rtu protocol is adopted as a communication protocol. The electric device 1-2 in the on-site terminal box 1 is mainly a circuit breaker 1-2-1 with an electronic release and a current transformer 1-2-2, the circuit breaker 1-2-1 with the electronic release provides a remote control on-off function of a circuit and fault protection of short circuit, overload, overvoltage, undervoltage, grounding and the like, the equipment is cut off when the on-site equipment fails, normal operation of other equipment on a bus is guaranteed, reliability of the system is improved, the current transformer 1-2-2 is used for monitoring real-time charging power of a charging pile and calculating power consumption, and the charging condition of an electric automobile can be judged according to the magnitude of charging current.
Based on the above description, fig. 4 is an overall schematic diagram of the centralized charging control system for an electric vehicle; the charging process of the electric automobile based on the electric automobile centralized charging control system comprises the following steps:
when a user enters a centralized parking area and has a charging demand, a charging wire of a charging pile is inserted into a charging socket of an electric automobile, and then charging request information including charging power, charging demand time and charging priority is input through a touch screen 1-1-2 of a local terminal box 1. The charging power is the charging power of the automobile in different charging modes, and the user obtains the data from an automobile manufacturer. The charging demand time is the charging time estimated by the user according to the current electric quantity of the electric automobile, the final required electric quantity and the daily charging condition. The charging priority is the priority of a charging queuing sequence requested by a user to the system according to the vehicle demand condition of the user, and the higher the priority is, the earlier the queuing sequence is, the earlier the charging is started. The priority can be divided into a plurality of levels, the charging sequence of the same priority is sorted according to the time of the request, the charging rates of different priorities are different, and the higher the priority is, the higher the charging rate is. The principle of charging with high priority and high rate priority can meet the requirement of completing charging as early as possible under special conditions of partial users.
The local terminal box 1 submits the application of the user to the centralized control subsystem 2, the centralized control subsystem 2 calculates the current queuing sequence information of the user and the estimated starting time and ending time according to the current queuing sequence data and the user request information, and outputs the current queuing sequence information and the estimated starting time and ending time to the local terminal box 1, and after receiving the information, the user can choose to accept and then enter the queuing sequence, or not accept, modify the data and reapply or abandon the charging.
When the system queuing sequence is not empty, the electric vehicles at the front end of the queuing sequence start charging after the centralized control subsystem 2 issues a charging starting instruction to the local terminal box 1, and the total charging power at the same moment is smaller than the maximum charging power of the system. Ending charging when a certain electric vehicle meets one of the following two conditions: (1) the user requested charging time has arrived; (2) The charging power of the electric automobile is far smaller than the charging power input by a user, and the system judges that the electric automobile is fully charged. When each electric automobile starts to be charged, the system calculates whether the maximum charging power of the system is exceeded or not according to the charging power of the electric automobile input by a user and the current real-time power, if not, the charging is started, and if so, the system continues to wait for the next end. If the charging power data input by the user has a large error, the charging is finished when the maximum charging power is detected to be exceeded at the beginning of charging, the data is modified, and the next charging is continuously waited to be finished. The power supply and distribution system typically has a short-term overload capability so that the process does not cause damage to the power supply and distribution system.
In conclusion, the centralized charging control system for the electric automobile provided by the embodiment reduces the impact problem of large load fluctuation on the power grid, and has the advantages of flexible operation, high intelligent degree and high reliability.
Example two
Fig. 5 is a flowchart of a centralized charging control method for an electric vehicle according to an embodiment of the present application, and as shown in fig. 5, the method includes:
step 1: the method comprises the steps of obtaining charging information of the electric automobile to be charged, which is input by a user, and sending the charging information to a centralized control subsystem;
step 2: the centralized control subsystem determines a queuing sequence and estimated charging time information of the electric vehicle to be charged based on the charging information and start-stop information, on-off information, real-time charging power and charging current value of each charging pile;
and 3, step 3: sending the queuing sequence and the estimated charging time information of the electric automobile to be charged to a local terminal box, and if the user receives the queuing sequence and the estimated charging time information of the electric automobile to be charged, charging the queuing sequence, and entering the step 4; otherwise, the user inputs the charging information again and returns to the step 1, or abandons the charging;
and 4, step 4: and when the charging time is equal to the charging time set by the user or the real-time charging power is smaller than a preset charging power threshold, the current user finishes charging.
In an embodiment of the disclosure, the method further comprises:
before the electric automobile to be charged is charged, determining charging power corresponding to a region to which the electric automobile belongs when the electric automobile is charged based on charging information of the electric automobile to be charged input by a user and real-time power at the current moment;
and judging whether the charging power corresponding to the region is less than or equal to a preset maximum value of the charging power of the charging region, if so, charging, and otherwise, continuing to wait.
For example, as shown in fig. 6, when a user enters a centralized parking area and needs to charge, a charging wire of a charging pile is first inserted into a charging socket of an electric vehicle, and then charging request information including charging power, charging demand time, and charging priority is input through a touch screen of an on-site terminal box. The charging power is the charging power of the automobile in different charging modes, and a user obtains the data from an automobile manufacturer. The charging demand time is the charging time estimated by the user according to the current electric quantity of the electric automobile, the final required electric quantity and the daily charging condition. The charging priority is the priority of a charging queuing sequence requested by a user to the system according to the vehicle demand condition of the user, and the higher the priority is, the earlier the queuing sequence is, the earlier the charging is started. The priority can be divided into a plurality of levels, the charging sequence of the same priority is sorted according to the time of the request, the charging rates of different priorities are different, and the higher the priority is, the higher the charging rate is. The principle of high-priority high-rate priority charging can meet the requirement of completing charging as early as possible under special conditions of part of users.
The local terminal box submits the application of the user to the centralized control subsystem, the centralized control subsystem calculates the current user queuing sequence information and the estimated starting time and ending time according to the current queuing sequence data and the user request information, and outputs the current user queuing sequence information and the estimated starting time and ending time to the local terminal box, and after receiving the information, the user can choose to accept and then enter the queuing sequence, or not accept, modify the data and reapply or abandon the charging.
When the system queuing sequence is not empty, the electric vehicles at the front end of the queuing sequence start charging after the centralized control subsystem issues a charging starting instruction to the local terminal box, and the total charging power at the same time is smaller than the maximum charging power of the system. Ending charging when a certain electric vehicle meets one of the following two conditions: (1) the user requested charging time has arrived; (2) The charging power of the electric automobile is far smaller than the charging power input by a user, and the system judges that the electric automobile is fully charged. When each electric automobile starts to be charged, the system calculates whether the maximum charging power of the system is exceeded or not according to the charging power of the electric automobile input by a user and the current real-time power, if not, the charging is started, and if so, the system continues to wait for the next end. If the charging power data input by the user has a large error, the charging is finished when the maximum charging power is detected to be exceeded at the beginning of charging, the data is modified, and the next charging is continuously waited to be finished. The power supply and distribution system typically has a short-term overload capability so that the process does not cause damage to the power supply and distribution system.
In conclusion, the centralized charging control method for the electric vehicle provided by the embodiment reduces the impact problem of large load fluctuation on the power grid, and has the advantages of flexible operation, high intelligent degree and high reliability.
EXAMPLE III
In order to implement the above embodiments, the present disclosure also provides an electronic device, including: the system comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor executes the program to realize the method according to the first embodiment.
Example four
In order to implement the above-mentioned embodiments, the present disclosure also proposes a computer-readable storage medium on which a computer program is stored, which when executed by a processor implements the method according to the first embodiment.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present application in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (10)
1. The utility model provides an electric automobile concentrates charge control system which characterized in that includes: the local terminal box is connected with the centralized control subsystem;
the on-site terminal box is used for sending the charging information of the electric automobile input by a user to the centralized control subsystem;
the centralized control subsystem comprises a centralized control device, the centralized control device is used for receiving charging information of the electric automobile, determining a queuing sequence and estimated charging time of the electric automobile based on the charging information, and then sending the queuing sequence and the estimated charging time of the electric automobile to the on-site terminal box;
the on-site terminal box is also used for displaying the queuing sequence of the electric automobile and estimating the charging time.
2. The centralized electric vehicle charging control system of claim 1, wherein the centralized control subsystem further comprises: the system comprises a main power cabinet, N regional power boxes, N power main lines and N communication buses;
the main power cabinet is respectively connected with N regional power boxes and respectively supplies power to the on-site terminal box through N power main lines;
the centralized control device is connected with local terminal boxes corresponding to all areas through N communication buses respectively, and the communication buses are used for information transmission between the centralized control subsystem and the local terminal boxes;
each area is divided based on the position of the charging piles, the number of the charging piles and the total charging power;
the charging piles correspond to the on-site terminal boxes one by one.
3. The centralized charging control system for electric vehicles according to claim 2, wherein the on-site terminal box comprises an embedded controller and an electrical device, wherein the embedded controller is connected with the electrical device;
the embedded controller is used for acquiring charging information of the electric charging automobile input by a user and sending the charging information to the centralized control device through the communication bus;
the embedded controller is also used for controlling the starting and stopping of the charging pile and acquiring the starting and stopping information of the charging pile;
the embedded controller is also used for sending information of disconnection with the power supply main line to the electrical device when the local terminal box has a fault, and acquiring the connection information of the electrical device and the power supply main line;
the electric device comprises a circuit breaker and a current transformer, wherein the circuit breaker is used for disconnecting the connection with the power main line based on the information sent by the embedded controller; the circuit breaker is provided with an electronic release;
the current transformer is used for monitoring the real-time charging power and the charging current value of the charging pile.
4. The centralized charging control system for electric vehicles according to claim 3, wherein the embedded controller comprises: the device comprises a controller, a touch screen, a digital input/output module, an analog input/output module and a communication module; the controller is respectively connected with the touch screen, the digital quantity input/output module, the analog quantity input/output module and the communication module, and the communication module is connected with the communication bus;
the touch screen is used for receiving charging information of the electric automobile input by a user and sending the charging information to the controller;
the digital quantity input and output module is used for controlling the starting and stopping of a charging pile, acquiring the starting and stopping information of the charging pile and sending the starting and stopping information to the controller;
the digital quantity input and output module is also used for sending information of disconnection with the power main line to the circuit breaker when the on-site terminal box has a fault, acquiring the disconnection information of the circuit breaker and the power main line, and sending the disconnection information to the controller;
the analog input/output module is used for acquiring the real-time charging power and the charging current value of the charging pile acquired by the current transformer and transmitting the real-time charging power and the charging current value to the controller;
the controller is used for sending the charging information, the start-stop information, the cut-off information, the real-time charging power and the charging current value to the centralized control device through the communication module and sending the real-time charging power and the start-stop information to the touch screen;
the controller is also used for receiving the queuing sequence and the estimated charging time of the electric automobile sent by the centralized control device through the communication module, and sending the queuing sequence and the estimated charging time of the electric automobile to the touch screen;
the touch screen is also used for displaying the real-time charging power, the start-stop information, the queuing sequence and the estimated charging time of the charging pile.
5. The centralized charging control system of claim 4, wherein the controller is further configured to determine the charging status of the battery car based on the magnitude of the charging current value.
6. The centralized charging control system for electric vehicles according to claim 4, wherein the embedded controller further comprises: the storage module is connected with the controller;
the storage module is used for storing the charging information of the user and sending the charging information to the controller when the user is charged again;
the controller is further configured to receive the charging information sent by the storage module.
7. The electric vehicle centralized charging control method according to any one of claims 1 to 6, characterized by comprising:
step 1: the method comprises the steps of obtaining charging information of the electric automobile to be charged, which is input by a user, and sending the charging information to a centralized control subsystem;
step 2: the centralized control subsystem determines a queuing sequence and estimated charging time information of the electric vehicle to be charged based on the charging information and start-stop information, on-off information, real-time charging power and charging current value of each charging pile;
and step 3: sending the queuing sequence and the estimated charging time information of the electric automobile to be charged to a local terminal box, and if the user receives the queuing sequence and the estimated charging time information of the electric automobile to be charged, charging the queuing sequence, and entering the step 4; otherwise, the user inputs the charging information again and returns to the step 1, or abandons the charging;
and 4, step 4: and when the charging time is equal to the charging time set by the user or the real-time charging power is smaller than a preset charging power threshold, the current user finishes charging.
8. The method of claim 7, wherein the method further comprises:
before the electric automobile to be charged is charged, determining charging power corresponding to a region to which the electric automobile belongs when the electric automobile is charged based on charging information of the electric automobile to be charged input by a user and real-time power at the current moment;
and judging whether the charging power corresponding to the region is less than or equal to a preset maximum value of the charging power of the charging region, if so, charging, and otherwise, continuing to wait.
9. An electronic device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which when executed by the processor implements the method of any one of claims 7 to 8.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 7 to 8.
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| CN202211062988.5A CN115303107A (en) | 2022-09-01 | 2022-09-01 | Centralized charging control system and method for electric automobile |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115991113A (en) * | 2023-03-23 | 2023-04-21 | 深圳市永联科技股份有限公司 | Charging planning method and related device |
| CN116605086A (en) * | 2023-05-18 | 2023-08-18 | 国网江苏省电力有限公司南通供电分公司 | Charging system device and control method |
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2022
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115991113A (en) * | 2023-03-23 | 2023-04-21 | 深圳市永联科技股份有限公司 | Charging planning method and related device |
| CN115991113B (en) * | 2023-03-23 | 2023-05-26 | 深圳市永联科技股份有限公司 | Charging planning method and related device |
| CN116605086A (en) * | 2023-05-18 | 2023-08-18 | 国网江苏省电力有限公司南通供电分公司 | Charging system device and control method |
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