CN117416229B - Ordered charging management device and method for alternating-current charging piles of electric automobile - Google Patents
Ordered charging management device and method for alternating-current charging piles of electric automobile Download PDFInfo
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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
- B60L53/30—Constructional details of charging stations
- B60L53/31—Charging columns specially adapted for electric vehicles
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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
- B60L53/62—Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
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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
- B60L53/68—Off-site monitoring or control, e.g. remote control
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Abstract
The invention relates to the technical field of charging management, in particular to an orderly charging management device and method for an electric vehicle alternating-current charging pile, comprising the following steps: the system comprises a front-end load acquisition device, a rear-end ordered charging control device and a cloud management scheduling platform, wherein the front-end load acquisition device acquires power supply load data of a power distribution network; the rear-end orderly charging control device orderly charges the vehicle-mounted charging end according to the cloud control instruction; the cloud management scheduling platform determines a controlled quantity according to the power supply load data and the target current control value, and generates a cloud control instruction of a vehicle to be charged or being charged according to the charging load data and the controlled quantity acquired by the rear-end ordered charging control device. The invention realizes the autonomous adjustment of the output power of the charging pile through different control strategies, solves the problem that the power output and the current output of each phase cannot be automatically adjusted in the charging process of the existing alternating current charging pile, realizes the three-phase balance adjustment of the load of the distribution network in a certain range, and has the characteristics of plug and play.
Description
Technical Field
The invention relates to the technical field of charging management, in particular to an orderly charging management device and method for an electric vehicle alternating-current charging pile.
Background
The electric automobile charging infrastructure construction is the basis of the strategic development of electric automobiles in China, along with the rapid development of the electric automobiles, the electric automobile charging facilities are connected into a public power grid in a large scale, strong impact is generated on a power distribution network, the conventional charging unordered management mode can cause huge waste on power supply resources if the power supply is required to be completely met in capacity, especially for old communities, the electric automobile load is not considered at the beginning of the design of a distribution transformer and a circuit cable, the ever-increasing electric automobile charging demand is difficult to completely meet, and heavy overload tripping and even electric safety accidents are very easy to be caused by the large-scale connection of the electric automobiles, so that the unordered charging is very necessary to be changed into ordered charging under the condition of the large-scale development and the market operation of the electric automobiles at present, the safe and stable operation of the electric power supply when the large-scale electric automobiles are connected into the power grid is ensured, and the unordered alternating-current charging pile cannot be directly upgraded into ordered control, and the corresponding technical improvement is required to be carried out for the function of ordered charging management.
At present, the internal mechanism of the conventional electric automobile alternating current charging pile disordered charging mechanism is limited in that the power output can not be regulated and controlled, so that the electric automobile alternating current charging pile can only run at full power or stop working under actual working conditions, and the output of each phase of current of a load can not be actively regulated, the actual power output of the charging pile is determined by the charging requirement sent by an automobile built-in vehicle-mounted charger, the working principle is that the allowable input current of the vehicle-mounted charger is determined by detecting the built-in identification resistance value and the PWM duty ratio of the charging pile, however, the built-in identification resistance value and the PWM duty ratio of the charging pile are generally solidified before the charging pile leaves a factory, and therefore, the disordered alternating current charging pile can not actively change the power output in the charging process.
Disclosure of Invention
The invention provides an orderly charging management device and method for an electric automobile alternating-current charging pile, which solve the technical problem that the existing alternating-current charging pile cannot automatically adjust power output and current output of each phase in the charging process.
In order to solve the technical problems, the invention provides an orderly charging management device and method for an electric vehicle alternating-current charging pile.
In a first aspect, the present invention provides an ordered charging management device for an ac charging pile of an electric vehicle, the device comprising: the cloud management scheduling platform is connected between the front-end load acquisition device and the rear-end ordered charging control device; the rear-end ordered charging control device is connected between the unordered charging pile and the vehicle-mounted charging end and comprises an MCU control module, and a power taking module, a cable capacity limiting module, a main loop control module, a power adjusting module, a metering module and a leakage protection module which are all connected with the MCU control module;
The front-end load acquisition device is used for acquiring power supply load data of the power distribution network and sending the power supply load data to the cloud management scheduling platform;
The back-end ordered charging control device is used for sending the collected charging load data of the vehicle-mounted charging end to the cloud management scheduling platform, receiving a cloud control instruction sent by the cloud management scheduling platform, and controlling the vehicle-mounted charging end to carry out ordered charging according to the cloud control instruction;
The cloud management scheduling platform is used for determining a controlled quantity according to the received power supply load data, charging load data and a preset target current control value, and generating a cloud control instruction of a vehicle to be charged or being charged according to the controlled quantity.
In a further embodiment, the power taking module is respectively connected with a vehicle charging control line of the charging gun and a protection ground line of the disordered charging pile, the power taking module comprises a first resistor and a first relay, wherein a public end of the first relay is connected with a power supply control device of the disordered charging pile through the vehicle charging control line of the charging gun, a first contact of the first relay is connected with the power regulating module through the vehicle charging control line of the charging gun, and a second contact of the first relay is connected with the protection ground line of the disordered charging pile through the first resistor; the second contact of the first relay is normally closed.
The power taking module is used for enabling the power supply control device to be deceived by the rear-end ordered charging control device and judging that the vehicle control device sends a charging start signal under the partial pressure effect of the first resistor when detecting that the charging plug of the disordered charging pile is connected with the input end socket of the rear-end ordered charging control device, so as to trigger the power supply control device of the disordered charging pile to be switched from a direct current connection state to a PWM connection state, and closing a first circuit breaker and a second circuit breaker of the disordered charging pile to provide working voltage for the device;
the power taking module is further used for controlling the first contact of the first relay to be closed according to the connection state when the input end and the output end of the rear-end ordered charging control device are respectively connected with the unordered charging pile and the vehicle charging end, so that the power supply control device controls the vehicle control device and the power supply control device to be in a communication handshake state when receiving handshake signals sent by the vehicle control device.
In a further embodiment, the cable capacity limiting module comprises a resistor Rong Mokuai, one end of the resistor-capacitor module is connected with the MCU control module through a connection confirmation line of the charging gun, and the other end of the resistor-capacitor module is connected with a protection ground wire of the disordered charging pile through a first micro switch; the MCU control module is connected with the protection ground wire of the disordered charging pile sequentially through a connection confirmation wire of the charging gun, a third resistor and a fourth resistor, wherein the second micro switch is connected in parallel with the two ends of the fourth resistor;
The resistance-capacitance module comprises a first resistance-capacitance circuit, a second resistance-capacitance circuit and a third resistance-capacitance circuit which are connected in parallel, wherein the first resistance-capacitance circuit comprises a second relay and a first resistance-capacitance buffer which are connected in series, the second resistance-capacitance circuit comprises a third relay and a second resistance-capacitance Rong Huanchong which are connected in series, and the third resistance-capacitance circuit comprises a fourth relay and a third resistance-capacitance buffer which are connected in series;
The MCU control module is used for detecting pile end resistance values of detection points of the disordered charging pile alternating-current charging gun according to the charging start instruction forwarded by the cloud management scheduling platform, determining rated output power of the disordered charging pile according to the pile end resistance values, and generating a cable capacity switch control instruction according to the rated output power of the disordered charging pile, the resistance values of the first resistance-capacitance buffer, the second resistance-capacitance buffer and the third resistance-capacitance buffer;
The cable capacity limiting module is used for controlling the on-off of the first resistance-capacitance buffer, the second resistance-capacitance buffer or the third resistance-capacitance buffer according to the cable capacity switch control instruction transmitted by the MCU control module.
In a further embodiment, one end of the power regulating module is connected with a power supply control device positioned on the disordered charging pile through the power taking module, and the other end of the power regulating module is connected with the vehicle-mounted charging end through a vehicle charging control line of a charging gun;
the power adjusting module is used for inquiring and generating a duty ratio adjusting value instruction corresponding to a preset target current control value according to charging load data of the vehicle-mounted charging end and a pre-constructed duty ratio mapping relation after receiving the first PWM signal sent by the power supply control device, so as to adjust the duty ratio of the first PWM signal according to the duty ratio adjusting value instruction and the charging load data to obtain a second PWM signal, and sending the second PWM signal to a vehicle-mounted charger of the vehicle-mounted charging end, so that the vehicle-mounted charging end adjusts the maximum allowable input current during charging according to the second PWM signal.
In a further embodiment, the main loop control module, the metering module and the leakage protection module are sequentially arranged on a three-phase line and a zero line between an input socket end of the rear-end ordered charging control device and an output gun head end of the rear-end ordered charging control device;
The metering module is used for collecting three-phase line phase voltage or current signals output by the disordered charging pile and sending the three-phase line phase voltage or current signals to the cloud management scheduling platform through the MCU control module;
The cloud management scheduling platform is used for acquiring a three-phase unbalance rate according to the received three-phase current signal, generating a three-phase load adjustment instruction according to the three-phase unbalance rate and a three-phase balance principle, and sending the three-phase load adjustment instruction to the main loop control module through the MCU control module.
In a further embodiment, the earth leakage protection module comprises a third circuit breaker;
the main loop control module comprises a fourth circuit breaker, a fifth relay, a sixth relay and a seventh relay which are respectively connected with three phase lines of the disordered charging pile; the charging pile is used for charging a charging load, wherein the A phase line of the three phase line is connected with the B phase line and the C phase line of the three phase line through a fourth circuit breaker, and the fourth circuit breaker is used for controlling the power supply system to switch between a charging load three-phase balance adjustment mode and a charging load single-phase balance adjustment mode when the charging pile is in a three-phase mode;
The main loop control module is used for respectively controlling the on-off of the fifth relay, the sixth relay and the seventh relay according to the received three-phase load adjustment instruction under the charging load three-phase balance adjustment mode and the charging load single-phase balance adjustment mode.
In a further embodiment, a first detection point is arranged between the MCU control module and the cable capacity limiting module;
A second detection point is arranged at the third circuit breaker; the second detection point is used for collecting the switch position data of the third circuit breaker and transmitting the switch position data to the MCU control module so that the MCU control module can determine the opening and closing state of the third circuit breaker according to the switch position data of the third circuit breaker;
and a third detection point is arranged between the MCU control module and the power supply interface of the disordered charging pile.
In a further embodiment, the cloud management scheduling platform is further configured to: generating a waiting queue and a charging queue of a plurality of electric vehicles according to a preset queuing rule, generating a charging starting instruction after determining the vehicle to be charged according to the waiting queue, and sending the charging starting instruction to the MCU control module; under the condition that the abnormal charging condition is detected, a disconnection control instruction is sent to the MCU control module, so that the MCU control module can conduct operation of separating from a charging queue on a vehicle being charged;
The MCU control module is further used for controlling the rear-end ordered charging control device to perform state self-checking after receiving a charging starting instruction, and if the self-checking result of the rear-end ordered charging control device is detected to be normal, orderly charging is performed according to a cloud control instruction sent to the MCU control module by the cloud management scheduling platform;
The state self-checking process comprises the step of detecting temperature data, detection points and connection states of the back-end ordered charging control device.
In a further embodiment, the back-end in-order charge control device further comprises: the temperature sensor, the communication module and the display module are connected with the MCU control module;
The temperature sensor is used for acquiring temperature data inside the device and transmitting the temperature data to the MCU control module so that the MCU control module performs state self-checking according to the temperature data;
The communication module is used for transmitting data between the back-end ordered charging control device and the cloud management scheduling platform;
The display module is used for receiving and displaying the display information sent by the MCU control module.
In a second aspect, the present invention provides a method for managing ordered charging of ac charging piles of an electric vehicle, and the method includes the following steps:
Collecting power supply load data of a power distribution network and charging load data of a vehicle-mounted charging end;
Determining a controlled quantity according to the power supply load data, the charging load data and a preset target current control value, and generating a cloud control instruction of a vehicle to be charged or being charged according to the controlled quantity;
And controlling the vehicle-mounted charging end to carry out ordered charging according to the cloud control instruction.
The invention provides an ordered charging management device and method for an electric automobile alternating-current charging pile, wherein the device comprises a front-end load acquisition device, a rear-end ordered charging control device and a cloud management scheduling platform connected between the front-end load acquisition device and the rear-end ordered charging control device, the rear-end ordered charging control device comprises an MCU control module, a power taking module, a cable capacity limiting module, a main loop control module, a power regulating module, a metering module and a leakage protection module, wherein the power taking module, the cable capacity limiting module, the main loop control module, the power regulating module, the metering module and the leakage protection module are all connected with the MCU control module, and the rear-end ordered charging control device is used for controlling the electric automobile alternating-current charging pile to carry out ordered charging according to a remote control instruction of the cloud management scheduling platform. Compared with the prior art, the device monitors and dynamically and autonomously adjusts the charging power in real time in the charging process, realizes the ordered charging function of the alternating current pile, meets the ordered charging requirement of increment under the condition of ordered charging of the storage quantity, and simultaneously realizes the load three-phase balance adjustment and the plug-and-play charging technology of the power supply system within a certain control range.
Drawings
Fig. 1 is a schematic structural diagram of an orderly charging management device for an electric vehicle ac charging pile according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of an orderly charging management device for an ac charging pile of an electric vehicle according to an embodiment of the present invention;
Fig. 3 is a block diagram of a back-end ordered charge control device according to an embodiment of the present invention;
Fig. 4 is a schematic diagram of a relationship between resistance and capacity in a cable capacity limiting module according to an embodiment of the present invention;
Fig. 5 is a schematic diagram of a charging workflow of an orderly charging management device according to an embodiment of the present invention;
Fig. 6 is a schematic diagram of a group control management flow of a cloud management scheduling platform according to an embodiment of the present invention;
Fig. 7 is a flowchart of an orderly charging management method for an electric vehicle ac charging pile according to an embodiment of the present invention.
Detailed Description
The following examples are given for the purpose of illustration only and are not to be construed as limiting the invention, including the drawings for reference and description only, and are not to be construed as limiting the scope of the invention as many variations thereof are possible without departing from the spirit and scope of the invention.
Referring to fig. 1, an embodiment of the present invention provides an orderly charging management device for an ac charging pile of an electric vehicle, as shown in fig. 1, the device includes: front-end load collection device 10, back-end ordered charge control device 11 and cloud management dispatch platform 12 connected between front-end load collection device 10 and back-end ordered charge control device 11.
In this embodiment, the front-end load acquisition device 10 is connected to a power distribution network, where the front-end load acquisition device 10 is configured to acquire power supply load data of the power distribution network, and send the power supply load data to the cloud management scheduling platform; in this embodiment, the front load collecting device 10 includes a sampling transformer, a multifunctional instrument, a communication module, and a power module.
The back-end ordered charging control device 11 is configured to send the collected charging load data of the vehicle-mounted charging end to the cloud management scheduling platform, receive a cloud control instruction sent by the cloud management scheduling platform, and control the vehicle-mounted charging end to perform ordered charging according to the cloud control instruction.
The cloud management scheduling platform 12 is configured to generate a waiting queue and a charging queue of a plurality of electric vehicles according to a preset queuing rule, generate a charging start instruction after determining a vehicle to be charged according to the waiting queue, and send the charging start instruction to the back-end ordered charging control device; and the cloud control instruction is used for determining a controlled quantity according to the received power supply load data, the charging load data and a preset target current control value in the ordered charging process, and generating a cloud control instruction of a vehicle to be charged or being charged according to the controlled quantity.
As shown in fig. 2, the rear-end ordered charging control device 11 is connected between a disordered charging pile (charging pile) 13 and a vehicle-mounted charging end (electric automobile) 14, the disordered charging pile comprises a first breaker K1, a second breaker K2, a power supply control device and a power supply ground, the vehicle-mounted charging end comprises a vehicle-mounted charger (OBC), a vehicle-mounted ground and a vehicle control device, wherein the power supply control device of the disordered charging pile is connected with a first switch S1 for selecting between an output voltage end of the power supply control device and a PWM wave transmitting end, so that the power supply control device is triggered to switch from a direct current connection state to a PWM connection state; the first breaker K1 and the second breaker K2 are connected with the vehicle-mounted charger (OBC) through an A phase line L1, a B phase line L2, a C phase line L3 and a zero line N of three phase lines; the power supply ground is connected with the vehicle-mounted ground through a protection ground line PE, and the power supply control device is connected with the vehicle control device through a vehicle charging control line CP.
In one embodiment, as shown in fig. 3, the back-end ordered charging control device 11 includes an MCU control module 110, and a power take-off module 111, a cable capacity limiting module 112, a main loop control module 113, a power adjustment module 114, a metering module 115, a leakage protection module 116, a temperature sensor 117, a communication module 118, and a display module 119 all connected to the MCU control module 110.
As shown in fig. 2, in this embodiment, a fourth detection point E4 is disposed between the resistor R1 and the power taking module; a fifth detection point E5 is provided between the diode D1 and the vehicle control device; a sixth detection point E6 is provided at the same node position as the fifth detection point E5 at one end of the vehicle control device.
The MCU control module 110 is configured to perform a status self-check on the back-end ordered charging control device after receiving a charging start instruction sent by the cloud management scheduling platform 12, and if it is detected that the self-check result of the back-end ordered charging control device is normal, perform ordered charging according to a cloud control instruction sent by the cloud management scheduling platform to the MCU control module; the state self-checking process comprises the step of detecting temperature data, detection points and connection states of the back-end ordered charging control device.
The MCU control module 110 in this embodiment preferably adopts a stm32 series cpu or a 32-bit microprocessor with the same performance level, which is configured to identify and determine status signals of the first to third detection points E1 to E3, provide corresponding control signals for the first to seventh relays J1 to J7 according to the identified signals, and further is configured to capture PWM signals sent from the pile tip in real time, and modulate and output the PWM signals according to system requirements, so that a person skilled in the art may set a model of the MCU control module according to specific implementation conditions, not limited to the embodiment of the present invention.
In this embodiment, the power taking module 111 is connected with the vehicle charging control line CP of the charging gun and the protection ground line PE of the disordered charging pile, the power taking module 111 includes a first resistor R2 'and a first relay J1, where a public end of the first relay is connected with the power supply control device of the disordered charging pile through the vehicle charging control line CP of the charging gun, a first contact 1 of the first relay is connected with the power regulating module 114 through the vehicle charging control line CP of the charging gun, a second contact 2 of the first relay is connected with the protection ground line PE of the disordered charging pile through the first resistor R2', and a second contact of the first relay J1 is in a normally closed state.
The power taking module 111 is configured to, when it is detected that a charging plug of the disordered charging pile is connected to an input socket of the rear-end ordered charging control device, at this time, due to a voltage division effect of the first resistor R2', cause a voltage detected at a fourth detection point E4 of the power supply control device to become 9V, so that the power supply control device is spoofed by the rear-end ordered charging control device and determines that the vehicle control device sends a charging start signal, trigger the power supply control device of the disordered charging pile to switch from a dc connection state to a PWM connection state (i.e., a first switch S1 connected with the power supply control device points to the PWM end), thereby trigger and close a first breaker K1 and a second breaker K2 of the disordered charging pile to provide an operating voltage for the device and provide an AC220V operating power supply for the device; when the input end and the output end of the rear-end ordered charging control device are connected at the same time, the connection state of the first detection point E1 and the third detection point E3 is judged according to the MCU control module at the same time, so that the first relay J1 is controlled to be combined to the first contact 1 according to the connection state of the first detection point E1 and the third detection point E3, so that the CP line is completely communicated, at the moment, the device is in a communication handshake state of the vehicle control device and the power supply control device, and the first switch S1 is indirectly controlled by the vehicle control device.
The cable capacity limiting module 112 comprises a resistor Rong Mokuai, one end of the resistor-capacitor module is connected with the MCU control module 110 through a connection confirmation line CC of the charging gun, and the other end of the resistor-capacitor module is connected with a protection ground line PE of the disordered charging pile through a first micro switch S3'; the two ends of the first micro switch S3' are connected with a second resistor R4' in parallel, the MCU control module 110 is connected with the protection ground wire PE of the disordered charging pile sequentially through a connection confirmation line CC, a third resistor RC and a fourth resistor R4 of the charging gun, the two ends of the fourth resistor R4 are connected with a second micro switch S3 in parallel, and the first micro switch S3' and the second micro switch S3 are in a normally closed state.
The resistance-capacitance module comprises a first resistance-capacitance circuit, a second resistance-capacitance circuit and a third resistance-capacitance circuit which are connected in parallel, the first resistance-capacitance circuit comprises a second relay J2 and a first resistance-capacitance buffer RC1 which are connected in series, the second resistance-capacitance circuit comprises a third relay J3 and a second resistance-capacitance Rong Huanchong RC2 which are connected in series, and the third resistance-capacitance circuit comprises a fourth relay J4 and a third resistance-capacitance buffer RC3 which are connected in series.
The MCU control module 110 is configured to detect a pile end resistance value of the detecting point E3 of the disordered charging pile ac charging gun according to the charging start command forwarded by the cloud management scheduling platform 12, and determine a rated output power of the disordered charging pile according to the pile end resistance value, so as to generate a cable capacity switch control command according to the rated output power of the disordered charging pile, the resistance value of the first resistance-capacitance buffer RC1, the resistance value of the second resistance-capacitance buffer RC Rong Huanchong, and the resistance value of the third resistance-capacitance buffer RC3, where the cable capacity limiting module controls on-off of the first resistance-capacitance buffer, the second resistance-capacitance buffer, or the third resistance-capacitance buffer according to the cable capacity switch control command transmitted by the MCU control module.
In the embodiment, a first detection point E1 is disposed between the MCU control module 110 and the cable capacity limiting module 112, a third detection point E3 is disposed between the MCU control module 110 and a power supply interface of the disordered charging pile, the resistance value of the disordered charging pile RC is determined by detecting the pile end resistance value of the disordered charging pile ac charging gun detection point (third detection point) E3, the rated capacity of the disordered charging pile is identified, so as to control the closing of the relay J2/J3/J4 according to the rated capacity of the disordered charging pile, so that the RC1/RC2/RC3 loop is respectively selected by controlling the closing of the relay J2/J3/J4, and the power output value of the device is adjusted, and in the embodiment, the resistance value of the resistor Rong Huanchong RC1/RC2/RC3 is preferentially selected to represent 220 Ω/680/1.5 k Ω of a typical input cable capacity 32A/16A/10A, and the relationship is based on a standard electric capacity table of GB/T18487.1-electric car, wherein the current capacity table is further defined according to the current standard state of the current capacity table, and the current capacity table of the current capacity table is further defined according to the standard state of the current state of the system, and the current state of the current state table is further defined, as in the embodiment, wherein: when the rated capacity of the charging pile is 16A, the MCU control module 110 can measure that the resistance value of the resistor RC of the charging pile end resistor Rong Huanchong is 680 Ω through the third detection point E3, so that the MCU control module controls the third relay J3 (corresponding to the resistance value of 680 Ω) to be closed toward the contact 1, thereby defining the rated output of the device as 16A, in this embodiment, the MCU control module 110 can also detect the actual amount of the resistance value of RC2 through the first detection point E1, so as to prevent the resistance value failure from affecting the setting effect, and it should be noted that, when the relays J2/J3/J4 are separated at the same time, the MCU control module can be used as a measure for separating the system in a runaway state (network breaking, overheating, overcurrent, etc.).
It should be noted that, if protection or emergency measures are needed during the charging process, a person skilled in the art may also change the charging requirement by changing the equivalent resistance values of the first RC1, the second RC Rong Huanchong, and the third RC3 in the loop of the cable capacity limiting module 112, which is not limited to the embodiment of the present invention.
In this embodiment, the main loop control module 113, the metering module 115 and the leakage protection module 116 are sequentially disposed on three-phase lines L1, L2, L3 and a neutral line N between the input socket end of the back-end ordered charging control device and the output gun head end of the back-end ordered charging control device, namely: the first breaker K1 of unordered charging stake, second breaker K2 loops through measurement module, main loop control module and earth leakage protection module with on-vehicle charger (OBC) is connected, wherein measurement module and main loop control module all set up on three-phase line's A phase line L1, B phase line L2 and C phase line L3, earth leakage protection module sets up on three-phase line's A phase line L1, B phase line L2, C phase line L3 and zero line N.
The metering module 115 is configured to collect a phase voltage or current signal of an a phase line, a phase voltage or current signal of a B phase line, and a phase voltage or current signal of a C phase line of three phase lines output by an input socket end of the disordered charging pile, and send the three phase line phase voltage or current signal to the cloud management scheduling platform through an interface such as 485 or TTL, etc., where the cloud management scheduling platform calculates a three-phase imbalance rate according to the received three phase line voltage or current signal, and then generates a three-phase load adjustment instruction (transferring or reducing an excessive phase load) according to the three-phase imbalance rate and a three-phase balancing principle zero line current=0, and sends the three-phase load adjustment instruction to the main loop control module 113 through the MCU control module, so that the main loop control module 113 controls a relay inside the main loop control module correspondingly, and controls each phase load within a certain limit, where in this embodiment, a calculation formula of the three-phase imbalance rate is:
Wherein f represents a three-phase imbalance ratio; l 1、L2、L3 represents the phase currents of the A phase line, the B phase line and the C phase line of the three phase lines; l avg represents the three-phase current average.
In this embodiment, the leakage protection module 116 includes a third circuit breaker K3, and in this embodiment, by setting a second detection point E2 at the third circuit breaker K3, the collection of the switch position data of the third circuit breaker K3 is achieved, and the switch position data is transmitted to the MCU control module, so that the MCU control module determines the open-close state of the third circuit breaker according to the switch position data of the third circuit breaker K3, where K3 is a manual circuit breaker with leakage protection.
The main loop control module 113 includes a fourth circuit breaker K4, and a fifth relay J5, a sixth relay J6, and a seventh relay J7 respectively connected to three-phase lines L1, L2, and L3 of the disordered charging pile, wherein an a-phase line L1 of the three-phase line is connected to B-phase line L2 and C-phase line L3 of the three-phase line through the fourth circuit breaker K4; the fourth circuit breaker K4 is configured to control the power supply system to switch between a charging load three-phase balance adjustment mode and a charging load single-phase balance adjustment mode when the charging pile is in a three-phase mode, and it is noted that the fourth circuit breaker K4 is a manual change-over switch and is closed when the charging pile is in the three-phase balance adjustment mode, and is separated when the charging pile is in the three-phase balance adjustment mode; in the charging load single phase mode (K4 closed), J5/J6/J7 allows only one set of relays to be closed at a time.
The main loop control module is used for respectively controlling the on-off of the fifth relay J5, the sixth relay J6 and the seventh relay J7 according to the received three-phase load adjustment instruction under the charging load three-phase balance adjustment mode and the charging load single-phase balance adjustment mode.
In this embodiment, the fifth relay J5, the sixth relay J6, and the seventh relay J7 may be independently switched according to an instruction, so as to achieve switching control of three-phase output, and in this embodiment, by collecting an imbalance rate of a current phase current, analyzing a change trend in a certain period, according to a three-phase balance principle, a zero line current=0, a control amount is obtained (an excessive phase load is transferred or reduced), and then corresponding switching control is performed on the fifth relay J5, the sixth relay J6, and the seventh relay J7, for convenience of understanding, the following example is used to make a simple description:
when detecting that the three-phase line A phase current is 40A, B and the three-phase line A phase current is 10A, C and the three-phase current is 100A, calculating the three-phase current average value to be 50A, judging that the calculated three-phase unbalance rate is higher than the qualification level of 5% according to the formula of three-phase unbalance rate = MAX (phase current-three-phase average current)/three-phase average current= (40-50)/50 = 20%, therefore, cutting the C-phase load to A, B phases according to the three-phase load balancing principle of a distribution network, wherein the specific cutting conditions are as follows:
When the charging pile power supply and the charging pile are three-phase and the charging load is three-phase, the cloud management platform can control the switching of J5/J6/J7 through the MCU control module to supply power to partial phase sequences, in this case, the J5/J6/J7 is allowed to be closed at any time, the phase load with high distribution network load is cut into the phase with low load, and the average load value of each phase is taken as the upper limit.
When the charging pile power supply and the charging pile are three-phase and the charging load is single-phase, the cloud management platform can control the switching of J5/J6/J7 through the MCU control module to supply partial phase sequence power, in this case, any two of J5/J6/J7 are not allowed to be closed at the same time, the phase load with high distribution network load is cut into the phase with low load, and the average load value of each phase is taken as the upper limit.
When the charging pile power supply and the charging pile are both single-phase and the charging load is single-phase, the cloud management platform can control the power adjusting module 114 through the MCU control module to adjust the PWM duty ratio so as to reduce the pile power output and reduce the phase load level with high distribution network load to a three-phase average state.
In this embodiment, one end of the power adjustment module 114 is connected to the power supply control device of the disordered charging pile sequentially through the vehicle charging control line CP of the charging gun, the power taking module and the resistor R1, and the other end is connected to the vehicle charging end through the vehicle charging control line of the charging gun;
the power adjusting module is used for inquiring and generating a duty ratio adjusting value instruction corresponding to a preset target current control value according to charging load data of the vehicle-mounted charging end and a pre-constructed duty ratio mapping relation after receiving the first PWM signal sent by the power supply control device, so as to adjust the duty ratio of the first PWM signal according to the duty ratio adjusting value instruction and the charging load data to obtain a second PWM signal, and sending the second PWM signal to a vehicle-mounted charger of the vehicle-mounted charging end, so that the vehicle-mounted charging end adjusts the maximum allowable input current during charging according to the second PWM signal.
Specifically, when the rated capacity of the accessed charging pile is 32A, the duty ratio of the first PWM signal (with the amplitude of +6v) sent by the power supply control device is 53.3%, and the aim of this embodiment is to adjust the first PWM signal to 16A output (with the corresponding duty ratio mapping value of 26.6%), so that the PWM duty ratio adjusting unit is utilized to generate a signal with the same-frequency reverse constant-amplitude (-6V) duty ratio of 26.6% on the basis of 53.3%, and after the signals are superimposed, a second PWM signal, that is, a signal with the equivalent duty ratio of 26.6% (with the amplitude of +6v), is sent to the vehicle-mounted charger, and it is to be noted that the duty ratio mapping relationship adopted in this embodiment is the PWM duty ratio and the charging current limit mapping relationship generated by the existing charging facility, which is not described herein.
The temperature sensor 117 is configured to collect temperature data inside the device, and transmit the temperature data to the MCU control module, so that the MCU control module performs a status self-test on the back-end ordered charging control device according to the temperature data.
The communication module 118 is configured to transmit data between the back-end ordered charging control device and a cloud management scheduling platform; in this embodiment, the communication module preferentially selects the DTU unit having the wireless communication technology such as 4G/5G.
The display module 119 is configured to receive and display information sent by the MCU control module.
Fig. 5 is a schematic diagram of a charging workflow of the ordered charging management device according to the embodiment of the present invention, in fig. 5, when the ordered charging management device performs self-checking on the back-end ordered charging control device and determines that the self-checking result is normal, the MCU control module 110 performs ordered charging control according to the cloud control instruction and the monitored data, and controls individuals (electric vehicles) participating in ordered charging to perform disconnection according to a disconnection control instruction of the cloud management scheduling platform.
In fig. 6, the cloud management scheduling platform forms a waiting queue and a charging queue according to a charging sequence of each charging unit (electric vehicle) based on a preset queuing rule (for example, a first waiting first charging rule), and in the charging process, the cloud management scheduling platform receives load data of a front-end load acquisition device and a rear-end ordered charging control device (namely, a controlled body), and adjusts charging power of each phase of the charging electric vehicle in combination with load control, three-phase balance, control interval and a first post-charging adjustment rule, when an emergency (for example, abnormal conditions such as network disconnection and overheating) occurs, the cloud management scheduling platform sends a disconnection control instruction to the MCU control module for safety protection, so that the MCU control module performs a disconnection operation on the abnormal units in the charging queue and then waits for the disconnection.
Compared with the prior art, the orderly charging management device for the alternating-current charging piles of the electric automobile has the following beneficial effects:
(1) The problem that the automatic power adjustment cannot be carried out on the stock disordered alternating-current charging pile can be solved, the traditional ordered charging technical scheme is mainly used for redesigning and distributing an alternating-current charging system according to the incremental ordered charging requirement, and belongs to the crossing type reform, the traditional ordered charging technical scheme is not directly compatible with the stock disordered charging pile, and the traditional ordered charging technical scheme is mainly used for carrying out concentrated local control before the pile in an energy router mode, the original disordered charging pile cannot be utilized, the control line length is uncontrollable, the whole manufacturing cost is uncontrollable, asynchronous implementation of each terminal is not facilitated, the device provided by the application is simple in structure, the control path can be controlled within a short distance, the cost is remarkably reduced compared with the traditional technical scheme, and the stepwise implementation of ordered power utilization management is facilitated;
(2) Adding a three-phase independent regulation output function to the three-phase disordered alternating-current charging pile;
(3) The application has the characteristics of plug and play and strong compatibility, the input and output ports of the ordered charging management device provided by the application are all national standard interfaces, the national standard is in seamless connection, the plug and play can be realized by matching the charging pile with the working flow of an automobile, the original pile end and the hardware of the automobile end are not required to be changed, and the traditional ordered charging technical scheme is required to re-anchor the installation position of central management equipment, so that the mode or the condition that the implementation cannot be realized due to insufficient field implementation conditions exists;
(4) The rated output power of the original charging pile is automatically identified, misoperation phenomenon caused by manual matching is avoided, and the capacity of the original charging pile is protected from exceeding the rated value;
(5) The ordered charging management device provided by the application can establish communication connection with the cloud management platform in a wireless mode such as 4G/5G, can get rid of wired constraint, realizes flexible group control management of a plurality of charging terminals, is randomly adapted to topological relations under different combinations, can realize total amount control of a power supply side and total amount control of a charging side, can realize load aggregation control application of a virtual power plant and the like, and participates in marketized demand side response (valley filling);
(6) When abnormal charging or unstable charging occurs, the charging equipment is ensured to be separated from the load in time, and the occurrence of systematic overload phenomenon is prevented.
The embodiment of the invention provides an ordered charging management device for an alternating-current charging pile of an electric automobile, which comprises a front-end load acquisition device, a rear-end ordered charging control device and a cloud management scheduling platform, wherein the front-end load acquisition device acquires power supply load data of a power distribution network and sends the power supply load data to the cloud management scheduling platform; the back-end ordered charging control device sends the collected charging load data of the vehicle-mounted charging end to the cloud management scheduling platform, receives a cloud control instruction sent by the cloud management scheduling platform, and controls the vehicle-mounted charging end to carry out ordered charging according to the cloud control instruction; the cloud management scheduling platform determines a controlled quantity according to the received power supply load data, charging load data and a preset target current control value, and generates a cloud control instruction of a vehicle to be charged according to the controlled quantity, so that automatic, orderly and flexible power supply scheduling of the charging pile is realized, the situation that the power distribution network is impacted greatly by the increasing charging demands of the electric vehicle is avoided, and the stability and safety of the power distribution network are ensured.
In one embodiment, as shown in fig. 7, the embodiment of the invention provides an ordered charging management method for an electric vehicle ac charging pile, and the ordered charging management device for the electric vehicle ac charging pile is applied, and the method comprises the following steps:
s1, collecting power supply load data of a power distribution network and charging load data of a vehicle-mounted charging end;
S2, determining a controlled quantity according to the power supply load data, the charging load data and a preset target current control value, and generating a cloud control instruction of a vehicle to be charged or being charged according to the controlled quantity;
S3, controlling the vehicle-mounted charging end to carry out ordered charging according to the cloud control instruction.
It should be noted that, the sequence number of each process does not mean that the execution sequence of each process is determined by the function and the internal logic, and should not limit the implementation process of the embodiment of the present application.
The specific limitation of the method for managing the ordered charging of the ac charging piles of the electric vehicle can be referred to the limitation of the device for managing the ordered charging of the ac charging piles of the electric vehicle, and the description thereof is omitted herein. Those of ordinary skill in the art will appreciate that the various modules and steps described in connection with the disclosed embodiments of the application may be implemented in hardware, software, or a combination of both. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
The embodiment of the application provides an ordered charging management method for an electric vehicle alternating-current charging pile, which comprises the steps of determining a controlled quantity through power supply load data, charging load data and a preset target current control value, and generating a cloud control finger of a vehicle to be charged according to the controlled quantity, so that an on-vehicle charging end is controlled to carry out ordered charging according to the cloud control command. Compared with the prior art, the application realizes ordered charging regulation management of the charging piles of the electric vehicles and load three-phase balance regulation of the power supply system through different control strategies such as a load fixed value control strategy, a three-phase load balance control strategy and the like, ensures efficient, safe and reliable ordered charging of a large number of electric vehicles, reduces impact of disordered charging on a power grid, and can be timely separated from a charging queue under abnormal charging conditions to prevent systematic overload phenomenon.
The foregoing examples represent only a few preferred embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the application. It should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present application, and such modifications and substitutions should also be considered to be within the scope of the present application. Therefore, the protection scope of the patent of the application is subject to the protection scope of the claims. Meanwhile, the application is only suitable for control guidance under the connection mode B and the connection mode C of the charging mode 3 in the technical specification of national standard alternating current charging pile of GB/T18487.1-2015, part 1 of electric automobile conduction charging system: general requirement.
Claims (10)
1. An orderly charging management device for an electric automobile alternating-current charging pile, which is characterized by comprising: the cloud management scheduling platform is connected between the front-end load acquisition device and the rear-end ordered charging control device; the rear-end ordered charging control device is connected between the unordered charging pile and the vehicle-mounted charging end and comprises an MCU control module, and a power taking module, a cable capacity limiting module, a main loop control module, a power adjusting module, a metering module and a leakage protection module which are all connected with the MCU control module;
The front-end load acquisition device is used for acquiring power supply load data of the power distribution network and sending the power supply load data to the cloud management scheduling platform;
The back-end ordered charging control device is used for sending the collected charging load data of the vehicle-mounted charging end to the cloud management scheduling platform, receiving a cloud control instruction sent by the cloud management scheduling platform, and controlling the vehicle-mounted charging end to carry out ordered charging according to the cloud control instruction;
The cloud management scheduling platform is used for determining a controlled quantity according to the received power supply load data, charging load data and a preset target current control value, and generating a cloud control instruction of a vehicle to be charged or being charged according to the controlled quantity;
The power taking module is used for cheating the power supply control device of the disordered charging pile through partial pressure to trigger a PWM connection state and controlling a communication handshake state between the vehicle control device of the vehicle-mounted charging end and the power supply control device when the disordered charging pile is connected with the rear-end ordered charging control device;
the cable capacity limiting module is used for responding to a cable capacity switch control instruction generated according to the resistance value of the contained resistance-capacitance buffer and the rated output power of the charging pile, and controlling the on-off of the corresponding resistance-capacitance buffer;
the main loop control module is used for controlling the charging load to switch between a charging load three-phase balance adjustment mode and a charging load single-phase balance adjustment mode;
The power regulation module is used for receiving a first PWM signal of the power supply control device, and regulating the duty ratio of the first PWM signal according to the charging load data of the vehicle-mounted charging end and a preset duty ratio mapping relation so as to control the maximum allowable input current when the vehicle-mounted charging end is charged;
The cloud management scheduling platform is used for calculating three-phase unbalance rate according to three-phase voltage or current signals output by the disordered charging pile and collected by the metering module and generating a three-phase load adjustment instruction.
2. The electric vehicle alternating-current charging stake ordered charging management device as defined in claim 1, wherein: the power taking module is respectively connected with a vehicle charging control line of the charging gun and a protection ground wire of the disordered charging pile, and comprises a first resistor and a first relay, wherein a public end of the first relay is connected with a power supply control device of the disordered charging pile through the vehicle charging control line of the charging gun, a first contact of the first relay is connected with the power regulating module through the vehicle charging control line of the charging gun, and a second contact of the first relay is connected with the protection ground wire of the disordered charging pile through the first resistor;
The power taking module is used for enabling the power supply control device to be deceived by the rear-end ordered charging control device and judging that the vehicle control device sends a charging start signal under the partial pressure effect of the first resistor when detecting that the charging plug of the disordered charging pile is connected with the input end socket of the rear-end ordered charging control device, so as to trigger the power supply control device of the disordered charging pile to be switched from a direct current connection state to a PWM connection state, and closing a first circuit breaker and a second circuit breaker of the disordered charging pile to provide working voltage for the device;
the power taking module is further used for controlling the first contact of the first relay to be closed according to the connection state when the input end and the output end of the rear-end ordered charging control device are respectively connected with the unordered charging pile and the vehicle charging end, so that the power supply control device controls the vehicle control device and the power supply control device to be in a communication handshake state when receiving handshake signals sent by the vehicle control device.
3. The electric vehicle alternating-current charging stake ordered charging management device as defined in claim 1, wherein: the cable capacity limiting module comprises a resistor Rong Mokuai, one end of the resistor-capacitor module is connected with the MCU control module through a connection confirmation line of the charging gun, and the other end of the resistor-capacitor module is connected with a protection ground wire of the disordered charging pile through a first micro switch; the MCU control module is connected with the protection ground wire of the disordered charging pile sequentially through a connection confirmation wire of the charging gun, a third resistor and a fourth resistor, wherein the second micro switch is connected in parallel with the two ends of the fourth resistor;
The resistance-capacitance module comprises a first resistance-capacitance circuit, a second resistance-capacitance circuit and a third resistance-capacitance circuit which are connected in parallel, wherein the first resistance-capacitance circuit comprises a second relay and a first resistance-capacitance buffer which are connected in series, the second resistance-capacitance circuit comprises a third relay and a second resistance-capacitance Rong Huanchong which are connected in series, and the third resistance-capacitance circuit comprises a fourth relay and a third resistance-capacitance buffer which are connected in series;
The MCU control module is used for detecting pile end resistance values of detection points of the disordered charging pile alternating-current charging gun according to the charging start instruction forwarded by the cloud management scheduling platform, determining rated output power of the disordered charging pile according to the pile end resistance values, and generating a cable capacity switch control instruction according to the rated output power of the disordered charging pile, the resistance values of the first resistance-capacitance buffer, the second resistance-capacitance buffer and the third resistance-capacitance buffer;
The cable capacity limiting module is used for controlling the on-off of the first resistance-capacitance buffer, the second resistance-capacitance buffer or the third resistance-capacitance buffer according to the cable capacity switch control instruction transmitted by the MCU control module.
4. The electric vehicle alternating-current charging stake ordered charging management device as defined in claim 1, wherein: one end of the power regulating module is connected with a power supply control device positioned on the disordered charging pile through the power taking module, and the other end of the power regulating module is connected with the vehicle-mounted charging end through a vehicle charging control line of a charging gun;
the power adjusting module is used for inquiring and generating a duty ratio adjusting value instruction corresponding to a preset target current control value according to charging load data of the vehicle-mounted charging end and a pre-constructed duty ratio mapping relation after receiving the first PWM signal sent by the power supply control device, so as to adjust the duty ratio of the first PWM signal according to the duty ratio adjusting value instruction and the charging load data to obtain a second PWM signal, and sending the second PWM signal to a vehicle-mounted charger of the vehicle-mounted charging end, so that the vehicle-mounted charging end adjusts the maximum allowable input current during charging according to the second PWM signal.
5. The electric vehicle alternating-current charging stake ordered charging management device as defined in claim 1, wherein: the main loop control module, the metering module and the leakage protection module are sequentially arranged on a three-phase line and a zero line between an input socket end of the rear-end ordered charging control device and an output gun head end of the rear-end ordered charging control device;
The metering module is used for collecting three-phase line phase voltage or current signals output by the disordered charging pile and sending the three-phase line phase voltage or current signals to the cloud management scheduling platform through the MCU control module;
The cloud management scheduling platform is used for acquiring a three-phase unbalance rate according to the received three-phase current signal, generating a three-phase load adjustment instruction according to the three-phase unbalance rate and a three-phase balance principle, and sending the three-phase load adjustment instruction to the main loop control module through the MCU control module.
6. The electric vehicle alternating-current charging stake ordered charging management device as defined in claim 5, wherein: the leakage protection module comprises a third circuit breaker;
the main loop control module comprises a fourth circuit breaker, a fifth relay, a sixth relay and a seventh relay which are respectively connected with three phase lines of the disordered charging pile; the charging pile is used for charging a charging load, wherein the A phase line of the three phase line is connected with the B phase line and the C phase line of the three phase line through a fourth circuit breaker, and the fourth circuit breaker is used for controlling the power supply system to switch between a charging load three-phase balance adjustment mode and a charging load single-phase balance adjustment mode when the charging pile is in a three-phase mode;
The main loop control module is used for respectively controlling the on-off of the fifth relay, the sixth relay and the seventh relay according to the received three-phase load adjustment instruction under the charging load three-phase balance adjustment mode and the charging load single-phase balance adjustment mode.
7. The electric vehicle alternating-current charging stake ordered charging management device as defined in claim 6, wherein:
a first detection point is arranged between the MCU control module and the cable capacity limiting module;
A second detection point is arranged at the third circuit breaker; the second detection point is used for collecting the switch position data of the third circuit breaker and transmitting the switch position data to the MCU control module so that the MCU control module can determine the opening and closing state of the third circuit breaker according to the switch position data of the third circuit breaker;
and a third detection point is arranged between the MCU control module and the power supply interface of the disordered charging pile.
8. The electric vehicle alternating-current charging stake ordered charging management device of claim 7, wherein the cloud management scheduling platform is further configured to: generating a waiting queue and a charging queue of a plurality of electric vehicles according to a preset queuing rule, generating a charging starting instruction after determining the vehicle to be charged according to the waiting queue, and sending the charging starting instruction to the MCU control module; under the condition that the abnormal charging condition is detected, a disconnection control instruction is sent to the MCU control module, so that the MCU control module can conduct operation of separating from a charging queue on a vehicle being charged;
The MCU control module is further used for controlling the rear-end ordered charging control device to perform state self-checking after receiving a charging starting instruction, and if the self-checking result of the rear-end ordered charging control device is detected to be normal, orderly charging is performed according to a cloud control instruction sent to the MCU control module by the cloud management scheduling platform;
The state self-checking process comprises the step of detecting temperature data, detection points and connection states of the back-end ordered charging control device.
9. The electric car alternating current charging stake of claim 1, wherein the back end ordered charging control device further comprises: the temperature sensor, the communication module and the display module are connected with the MCU control module;
The temperature sensor is used for acquiring temperature data inside the device and transmitting the temperature data to the MCU control module so that the MCU control module performs state self-checking according to the temperature data;
The communication module is used for transmitting data between the back-end ordered charging control device and the cloud management scheduling platform;
The display module is used for receiving and displaying the display information sent by the MCU control module.
10. An electric vehicle alternating-current charging pile ordered charging management method, characterized in that an electric vehicle alternating-current charging pile ordered charging management device according to any one of claims 1 to 9 is applied, the method comprising the steps of:
Collecting power supply load data of a power distribution network and charging load data of a vehicle-mounted charging end;
Determining a controlled quantity according to the power supply load data, the charging load data and a preset target current control value, and generating a cloud control instruction of a vehicle to be charged or being charged according to the controlled quantity;
And controlling the vehicle-mounted charging end to carry out ordered charging according to the cloud control instruction.
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| US10549645B2 (en) * | 2017-02-06 | 2020-02-04 | GM Global Technology Operations LLC | Smart-charging apparatus for use with electric-vehicle-sharing stations |
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