CN113232546A - Intelligent power distribution charging system and control method - Google Patents
Intelligent power distribution charging system and control method Download PDFInfo
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- CN113232546A CN113232546A CN202110480533.4A CN202110480533A CN113232546A CN 113232546 A CN113232546 A CN 113232546A CN 202110480533 A CN202110480533 A CN 202110480533A CN 113232546 A CN113232546 A CN 113232546A
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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
- B60L53/67—Controlling two or more charging stations
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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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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
- H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
- H02H3/34—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors of a three-phase system
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
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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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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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
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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
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
Abstract
The invention discloses a power intelligent distribution charging system and a method, comprising the following steps: the intelligent power distribution unit, the charging rectifier cabinet and the split charging pile are arranged on the power distribution cabinet; the intelligent power distribution unit issues a power distribution strategy to the charging rectifier cabinet in real time by acquiring power distribution information; the charging rectifier cabinet is combined with a power distribution strategy and a vehicle charging requirement to adjust output power in real time; the split charging pile sends the vehicle charging requirement to the charging rectifier cabinet and measures the consumed electric energy. The advantages are that: the internal devices and components are divided into different module areas according to functions, and unified connection specifications are established among the module areas, so that the integrated circuit has the advantages of flexible combination and convenience in expansion; based on the limited distribution capacity, the charging time and cost are optimized, and the adverse effect of disordered charging on the load peak-valley difference of the power grid is avoided.
Description
Technical Field
The invention relates to a power intelligent distribution charging system and a control method, and belongs to the technical field of electric vehicle charging and battery replacement.
Background
The electric automobile is one of strategic emerging industries which are being cultivated and developed in China, is the direction of automobile industry development in the future, governments of various countries in the world provide important support for the development of the electric automobile, and electric power companies of various countries actively participate in the research and construction of energy supply facilities of the electric automobile. In China, the conservation quantity of electric automobiles increases year by year, and the construction of electric automobile energy supply facilities such as electric automobile charging stations matched with the high-speed development of the electric automobiles is the foundation of electric automobile popularization and is about to develop rapidly. Electric automobile charging piles (including electric automobile alternating-current charging piles and off-board charging machines) are incorporated into one of seven fields of new capital construction, and the charging pile scale is remarkably increased.
The existing distribution network infrastructure generally has insufficient residual capacity, especially old cells and businesses, charging facilities cannot be coordinated and controlled, the contradiction between high-power charging and distribution capacity cannot be solved, and therefore the charging requirement of large-scale and high-power electric automobiles cannot be met.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an intelligent power distribution charging system and a control method.
In order to solve the above technical problem, the present invention provides a power intelligent distribution charging system, including: a charging rectifier cabinet and a plurality of split charging piles, which is characterized in that,
install in the rectifier cabinet that charges: the power distribution system comprises a power controller (1), a power switching module (2), a power intelligent distribution unit (3), a charging module (4) and a power distribution module (5);
the power intelligent distribution unit (3)
Communicating with the management platform for obtaining power distribution qualification information,
the split charging pile and the power controller (1) are respectively connected and used for respectively transmitting vehicle charging demand information and power dynamic regulation information;
the power controller (1)
Is connected with the power distribution module (5) and is used for acquiring the working state information of the power distribution module and transmitting the power output control information,
the charging module (4) is connected and used for transmitting power regulation information;
the power switching module (2) is connected with the power supply and used for transmitting information for adjusting the number of the charging modules;
the power distribution module (5) is used for providing a working power supply for the power intelligent distribution unit (3), the split charging pile, the charging module (4), the power switching module (2) and the power controller (1);
the charging module (4) is used for converting AC380V alternating current provided by the power distribution module (5) into direct current of 200-750V and outputting the direct current to the split charging pile;
the power switching module (2) is used for acquiring a dynamic adjusting instruction of the power intelligent distribution unit (3) and switching the output of each charging module (5) at the charging connection output end of the split charging pile optionally;
the split charging pile is used for receiving charging demand information and charging vehicles.
Further, the charging rectifier cabinet further comprises: a heat dissipation module (6) and a protection module (7);
the heat dissipation module (6) is used for dissipating heat for the module in the charging rectifier cabinet;
and the protection module (7) is used for lightning protection and electric leakage protection.
Further, the charging module (4) comprises: a 20kW intelligent high-frequency switch power supply (8) and an electric energy management module (9),
the 20kW intelligent high-frequency switching power supply (8) is used for converting AC380V alternating current provided by the power distribution module (5) into direct current of 200V-750V and outputting the direct current to the split charging pile;
the electric energy management module (9) is connected with the 20kW intelligent high-frequency switching power supply (8) and is used for managing harmonic waves generated in the working process of the intelligent high-frequency switching power supply (8) and transmitting the managed energy back to the power distribution module (5).
Further, the power distribution module (5) comprises: inlet wire circuit breaker (10), ac contactor (11) and protection module (7), protection module (7) include: a lightning arrester (12) and a leakage protection switch (13);
the incoming line breaker (10) is used for controlling the on-off of the input of the AC380V AC working power supply;
the lightning arrester (12) is connected with the incoming line breaker (10) and is used for protecting the whole charging system from being struck by lightning or being impacted by instantaneous large voltage;
the leakage protection switch (13) is connected with the incoming line breaker (10) and is used for preventing a human body from touching the cabinet body to get an electric shock;
the alternating current contactor (11) is connected with the incoming line breaker (10) and is used for controlling the alternating current input of AC 380V;
and the alternating current contactor (11) is also connected with the charging module (4) and is used for controlling the power input of the charging module.
Furthermore, a water immersion sensor (14) is installed in the charging rectifier cabinet and used for collecting water immersion information in the cabinet.
Furthermore, the split charging pile comprises a charging logic control module (a), a direct current metering device (b), a charging connection cable (c) with a vehicle plug, an auxiliary power supply (d), a card reader (e) and a man-machine interaction device (f);
the charging logic control module (a)
Is connected with the direct current metering device (b) and is used for acquiring charging metering information,
connected with the card reader (e) and used for transmitting the user authentication information,
is connected with the human-computer interaction equipment (f) and is used for acquiring the input information of the user and displaying the charging scheme to the user,
is connected with the auxiliary power supply (d) and is used for controlling the working state of the auxiliary power supply,
the charging cable is connected with a charging connection cable (c) with a vehicle plug and is used for acquiring the charging demand information of the vehicle;
the direct current metering equipment (b) is connected with a charging connection cable (c) with a vehicle plug and is used for metering output direct current electric energy;
and the auxiliary power supply (d) is connected with a charging connection cable (c) with a vehicle plug and used for outputting working power to the vehicle.
A control method of a power intelligent distribution charging system comprises the following steps:
the new car joins the distribution process, including:
acquiring the residual power of the charging station in the current period, and determining a charging scheme based on an excitation factor mu according to the residual power, wherein the excitation factor mu is used for determining the charging priority, and the larger the excitation factor mu is, the higher the charging priority is;
according to the selection of a user, determining a specific charging scheme of the excitation factor mu to charge the electric vehicle;
dynamic power distribution process (PN max not exceeding charging station rated power), comprising:
acquiring limited total power PN of a power distribution network distributed to a charging station in the current period and current used power PC of the charging station;
generating a new charging scheme based on the excitation factor mu according to the limited total power PN of the power distribution network distributed to the charging stations in the current period;
if the PN is more than or equal to the PC, the charging is executed according to the new charging scheme;
if PN is less than PC, acquiring the corresponding excitation factor mu of all the electric vehicles being charged in the charging station, preferentially reducing the charging power of the electric vehicle with the minimum excitation factor mu, if the reduced charging power reaches the preset minimum power, and the PN is still less than the PC, continuing to reduce the charging power of the electric vehicle with the second minimum excitation factor mu on the basis of the preset minimum power, and so on until the PN is more than or equal to the PC, and completing dynamic power distribution.
The invention achieves the following beneficial effects:
the system of the invention divides the internal devices and components into different module areas according to functions, establishes uniform connection specifications among the module areas, and has the advantages of flexible combination and convenient expansion. The overall appearance size of the equipment is reasonably designed by combining ergonomics, so that the operation of a user is facilitated, and the user experience is improved. The wiring realizes strong and weak current separation and is safe and reliable to operate.
The method effectively utilizes the existing distribution network infrastructure, avoids potential harm of disordered electric vehicle charging behaviors to a power grid, and achieves the purposes of ensuring the operation economy, reducing the investment cost of charging facility operators and meeting the requirements of charging customers to the greatest extent. And (4) formulating a new vehicle adding distribution algorithm and a power intelligent distribution algorithm by combining the self demand of the user and the limited power of the power grid. Charging power and charging time of a charging station are used as research objects, a dynamic mathematical model is applied, exciting factors are increased, and diversified charging requirements of users can be met under limited conditions.
Drawings
Fig. 1 is a structural view of a charging rectifier cabinet;
fig. 2 is a structure view of a split charging pile;
FIG. 3 is a block diagram of a group control charging unit system;
FIG. 4 is a block diagram of a new vehicle join assignment algorithm flow;
fig. 5 is a block diagram of a dynamic power allocation algorithm flow.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
(1) The hardware description is as follows:
an intelligent power distribution charging system comprises a plurality of group control charging units, wherein the typical configuration of the group control charging units comprises 1 intelligent power distribution unit, 1 charging rectifier cabinet and 2 split charging piles, as shown in figures 1-3,
a power intelligent distribution charging system comprising: a charging rectifier cabinet and a plurality of split charging piles, which is characterized in that,
install in the rectifier cabinet that charges: the intelligent power distribution system comprises a power controller 1, a power switching module 2, a power intelligent distribution unit 3, a charging module 4 and a power distribution module 5;
the power intelligent distribution unit 3
Communicating with the management platform for obtaining power distribution qualification information,
the split charging pile and the power controller 1 are respectively connected and used for respectively transmitting vehicle charging demand information and power dynamic regulation information;
the power controller 1
Is connected with the power distribution module 5 and is used for acquiring the working state information of the power distribution module and transmitting the power output control information,
the charging module 4 is connected with the power supply and used for transmitting power regulation information;
the power switching module 2 is connected with the power supply module and is used for transmitting information for adjusting the number of the charging modules;
the power distribution module 5 is used for providing working power supply for the power intelligent distribution unit 3, the split charging pile, the charging module 4, the power switching module 2 and the power controller 1;
the charging module 4 is used for converting AC380V alternating current provided by the power distribution module 5 into direct current of 200V-750V and outputting the direct current to the split charging pile;
the power switching module 2 is used for acquiring a dynamic adjusting instruction of the power intelligent distribution unit 3 and switching the output of each charging module 5 at the charging connection output end of the split charging pile optionally;
the split charging pile is used for receiving charging demand information and charging vehicles.
Further, the charging rectifier cabinet further comprises: a heat dissipation module 6 and a protection module 7;
the heat dissipation module 6 is used for dissipating heat for the modules in the charging rectifier cabinet;
and the protection module 7 is used for lightning protection and electric leakage protection.
Further, the charging module 4 includes: a 20kW intelligent high-frequency switching power supply 8 and an electric energy management module 9,
the 20kW intelligent high-frequency switching power supply 8 is used for converting AC380V alternating current provided by the power distribution module 5 into direct current of 200V-750V and outputting the direct current to the split charging pile;
the electric energy management module 9 is connected with the 20kW intelligent high-frequency switching power supply 8 and is used for managing harmonic waves generated in the working process of the intelligent high-frequency switching power supply 8 and transmitting the managed energy back to the power distribution module 5.
Further, the power distribution module 5 includes: inlet wire circuit breaker 10, ac contactor 11 and protection module 7, protection module 7 includes: an arrester 12 and a leakage protection switch 13;
the incoming line breaker 10 is used for controlling the on-off of the input of an AC380V alternating current working power supply;
the lightning arrester 12 is connected with the incoming line breaker 10 and is used for protecting the whole charging system from being struck by lightning or being impacted by instantaneous large voltage;
the leakage protection switch 13 is connected with the incoming line breaker 10 and used for preventing a human body from touching the cabinet body to get an electric shock;
the alternating current contactor 11 is connected with the incoming line breaker 10 and is used for controlling the alternating current input of AC 380V;
the alternating current contactor 11 is also connected with the charging module 4 and is used for controlling the power input of the charging module.
Further, a water immersion sensor 14 is installed in the charging rectifier cabinet and used for collecting water immersion information in the cabinet.
Furthermore, the split charging pile comprises a charging logic control module a, a direct current metering device b, a charging connecting cable c with a vehicle plug, an auxiliary power supply d, a card reader e and a man-machine interaction device f;
the charging logic control module a
Is connected with the direct current metering device b and is used for acquiring charging metering information,
connected with the card reader e and used for transmitting the user authentication information,
is connected with the human-computer interaction device f and is used for acquiring the input information of the user and displaying the charging scheme to the user,
is connected with the auxiliary power supply d and is used for controlling the working state of the auxiliary power supply,
the charging cable is connected with a charging connection cable c containing a vehicle plug and is used for acquiring the charging demand information of the vehicle;
the direct current metering device b is connected with a charging connecting cable c containing a vehicle plug and is used for metering output direct current energy;
the auxiliary power supply d is connected with a charging connecting cable c containing a vehicle plug and used for outputting a working power supply to a vehicle;
the power intelligent distribution unit is communicated with the management platform through a network cable or wirelessly and used for acquiring power distribution limiting information. And simultaneously, interacting vehicle charging demand and power dynamic regulation information with the power controller.
The charging rectifier cabinet comprises a power controller, a power switching module, a power intelligent distribution unit, a charging module, a power distribution system, a heat dissipation system, a protection module and an integrated electric energy management module.
The power distribution system adopts 1 way 380V power access, is provided with inlet wire circuit breaker, ac contactor and arrester, and earth leakage protection switch provides working power supply for equipment such as module, power intelligent distribution unit, split type electric pile that fills respectively charge.
The charging module adopts a 20kW intelligent high-frequency switching power supply with a wide voltage output range (200V-750V) and a wide temperature working range (minus 30-65 ℃), can meet the charging requirements of various passenger vehicles and commercial vehicles at the same time, and adapts to the high-low temperature change working environments in different regions. The charging module is integrated with the electric energy management module, so that the quality of electric energy is ensured.
The power switching module is composed of a high-voltage direct-current contactor, and outputs of all charging modules are switched at the output ends of the 4 charging connection paths respectively according to dynamic adjusting instructions of the power intelligent distribution unit, so that dynamic power adjusting distribution of the 4 charging connection outputs is realized.
The power controller is controlled by a single chip microcomputer and is simultaneously communicated with the charging module, the power switching module and the power intelligent distribution unit. Executing a system control strategy: and controlling the charging power output in real time, and uploading the state of the charging module and alarm information.
Install cooling system in the rectifier cabinet that charges, prevent that the high temperature from taking place danger, install the water sensor simultaneously, prevent to take place ponding harm.
(2) The software description is as follows:
in order to effectively utilize the existing distribution network infrastructure and avoid the adverse effect of disordered charging on the load peak valley difference of a power grid and the defects of long charging time and high cost of a user, the patent designs a charging dynamic power distribution strategy. Firstly, the user selects variable charging power according to the self demand, and secondly, the change of the limited power of the power grid can cause the charging pile to output the charging power. The distribution strategy is based on time-of-use electricity price, a new vehicle joining distribution algorithm and a dynamic power distribution algorithm are introduced according to the structural layout of the cluster charging pile, the charging power and the charging time of the whole cluster charging station are used as research objects, a dynamic mathematical model is applied, and the factors such as the dynamic change of the vehicle SOC and the limited power of the charging station are comprehensively considered. Meanwhile, according to the difference of the charging requirements of the users, the concept of an exciting factor is introduced, wherein the exciting factor means that the users select the charging priority by themselves in the charging process, different charging powers can be generated by utilizing different factor setting values, and further dynamic charging cost can be generated. The dynamic distribution strategy can fully utilize the power distribution capacity supplied by the power grid to the charging station, has minimum power grid loss, meets the diversified charging requirements of different users, reduces the charging cost of the users, relieves the pressure of the charging station during the power consumption peak and improves the charging efficiency of the charging station.
Because the models of the charging vehicles are numerous, the charging requirements of users are different, the charging pile adopts the time-of-use electricity price, and the charging standard is formulated. In order to realize the charging requirement of a user efficiently and plan reasonable charging time and optimal charging cost, the patent proposes that an incentive factor mu is set, the charging priority is set according to the size of the incentive factor mu, and a quantized value can better show the relation of the incentive factor to the charging time and the charging cost. And setting mu to be 1 to 4 according to the number of actual charging guns of the cluster charging station, and respectively corresponding to four-level unique charging schemes of the human-computer interaction terminals I to IV for a user to check and select. The larger the excitation factor, the higher the charging priority, and the more the distributed charging power.
Assuming four time periods divided into one day, the corresponding charging electric charge is four gears of peak and valley: ct、Ch、Cn、Cl。
Wherein t1 is zero, t5 is 24, and t2, t3 and t4 are time points sequentially increasing between t1 and t 5.
Then the total charge rate CchargThe calculation is as follows:
Ccharg＝Cu*(1-SOC)*Q*(k*μ+b)
where Q is the total vehicle battery capacity. k is the exciting factor increasing rate and is taken as 0.25. b is a charging cost correction parameter, the size of b is determined according to the actual situation, and 0.5 is selected. The number of charging piles of a single cluster charging station is 4, the charging powers are respectively P1, P2, P3 and P4, and the total power of the charging stations at a certain moment is P1, P2, P3 and P4
Suppose PchargCharging power allocated to the charging post, PmaxThe maximum power required by an electric vehicle can be expressed as:
when mu is 4, obtaining the maximum charging power; when mu takes 1, the minimum charging power, i.e. P, is obtainedcharg＝0.1*Pmax。
The total charging time T is:
if the user needs to meet the charging requirement in the shortest time, the value of the charging time T set by the user is not less than
The charging station dynamic power distribution strategy comprises three parts; the new vehicle adds a distribution algorithm, a dynamic power distribution algorithm and a single-gun lowest power algorithm. The single gun minimum power algorithm refers to the minimum power that the algorithm sets (which is less than the minimum power required by most vehicles) that can be output per gun regardless of the power distribution. The new vehicle adding distribution algorithm means how a vehicle to be charged quickly enters a charging parking space, and the dynamic power distribution algorithm represents how the charging pile updates the charging power in real time in the charging process.
The single gun minimum power algorithm refers to the minimum power that the algorithm sets (which is less than the minimum power required by most vehicles) that can be output per gun regardless of the power distribution.
The new vehicle joining distribution algorithm mainly solves the problem how charging vehicles with different requirements can be rapidly joined into a charging sequence, and charging facilities are utilized to the maximum extent. Before charging is started, acquiring the residual power of a charging station in the current period, and determining a charging scheme based on an excitation factor mu according to the residual power, wherein the excitation factor mu is used for determining the charging priority, and the larger the excitation factor mu is, the higher the charging priority is; and determining a specific charging scheme of the incentive factor mu according to the selection of the user to charge the electric vehicle. The flow chart is shown in figure 4.
The dynamic power distribution algorithm mainly solves the problem that how to dynamically adjust the output power distribution of each charging gun in real time under the condition that the rated total power of the charging station and the SOC of the vehicle are dynamically changed, and reasonably distributes the power distributed by power distribution to the charging pile to the maximum extent. The whole cluster charging station dynamically detects the distribution power and the SOC information of all the charging vehicles in a certain refreshing period T. The distributed power may vary due to peak power usage of the power distribution system. Acquiring limited total power PN of a power distribution network distributed to a charging station in the current period and current used power PC of the charging station; generating a new charging scheme based on the excitation factor mu according to the limited total power PN of the power distribution network distributed to the charging stations in the current period; if the PN is more than or equal to the PC, the charging is executed according to the new charging scheme; if PN is less than PC, acquiring the corresponding excitation factor mu of all the electric vehicles being charged in the charging station, preferentially reducing the charging power of the electric vehicle with the minimum excitation factor mu, if the reduced charging power reaches the preset minimum power, if PN is less than PC, continuing to reduce the charging power of the electric vehicle with the second minimum excitation factor mu on the basis of the preset minimum power, and so on until PN is more than or equal to PC, and completing dynamic power distribution. The flow chart is shown in figure 5.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. A power intelligent distribution charging system comprising: a charging rectifier cabinet and a plurality of split charging piles, which is characterized in that,
install in the rectifier cabinet that charges: the power distribution system comprises a power controller (1), a power switching module (2), a power intelligent distribution unit (3), a charging module (4) and a power distribution module (5);
the power intelligent distribution unit (3)
Communicating with the management platform for obtaining power distribution qualification information,
the split charging pile and the power controller (1) are respectively connected and used for respectively transmitting vehicle charging demand information and power dynamic regulation information;
the power controller (1)
Is connected with the power distribution module (5) and is used for acquiring the working state information of the power distribution module and transmitting the power output control information,
the charging module (4) is connected and used for transmitting power regulation information;
the power switching module (2) is connected with the power supply and used for transmitting information for adjusting the number of the charging modules;
the power distribution module (5) is used for providing a working power supply for the power intelligent distribution unit (3), the split charging pile, the charging module (4), the power switching module (2) and the power controller (1);
the charging module (4) is used for converting AC380V alternating current provided by the power distribution module (5) into direct current of 200-750V and outputting the direct current to the split charging pile;
the power switching module (2) is used for acquiring a dynamic adjusting instruction of the power intelligent distribution unit (3) and switching the output of each charging module (5) at the charging connection output end of the split charging pile optionally;
the split charging pile is used for receiving charging demand information and charging vehicles.
2. The system of claim 1, wherein the rectifier charging cabinet further comprises: a heat dissipation module (6) and a protection module (7);
the heat dissipation module (6) is used for dissipating heat for the module in the charging rectifier cabinet;
and the protection module (7) is used for lightning protection and electric leakage protection.
3. The power intelligent distribution charging system according to claim 1, characterized in that the charging module (4) comprises: a 20kW intelligent high-frequency switch power supply (8) and an electric energy management module (9),
the 20kW intelligent high-frequency switching power supply (8) is used for converting AC380V alternating current provided by the power distribution module (5) into direct current of 200V-750V and outputting the direct current to the split charging pile;
the electric energy management module (9) is connected with the 20kW intelligent high-frequency switching power supply (8) and is used for managing harmonic waves generated in the working process of the intelligent high-frequency switching power supply (8) and transmitting the managed energy back to the power distribution module (5).
4. The power intelligent distribution charging system according to claim 2, characterized in that the power distribution module (5) comprises: inlet wire circuit breaker (10), ac contactor (11) and protection module (7), protection module (7) include: a lightning arrester (12) and a leakage protection switch (13);
the incoming line breaker (10) is used for controlling the on-off of the input of the AC380V AC working power supply;
the lightning arrester (12) is connected with the incoming line breaker (10);
the leakage protection switch (13) is connected with the incoming line breaker (10);
the alternating current contactor (11) is connected with the incoming line breaker (10) and is used for controlling the alternating current input of AC 380V;
and the alternating current contactor (11) is also connected with the charging module (4) and is used for controlling the power input of the charging module.
5. The intelligent power distribution and charging system according to claim 1, wherein a water immersion sensor (14) is installed in the charging rectifier cabinet and used for collecting water immersion information in the cabinet.
6. The system for intelligently distributing and charging power according to claim 1, wherein the split charging pile comprises a charging logic control module (a), a direct current metering device (b), a charging connection cable (c) with a vehicle plug, an auxiliary power supply (d), a card reader (e) and a human-computer interaction device (f);
the charging logic control module (a)
Is connected with the direct current metering device (b) and is used for acquiring charging metering information,
connected with the card reader (e) and used for transmitting the user authentication information,
is connected with the human-computer interaction equipment (f) and is used for acquiring the input information of the user and displaying the charging scheme to the user,
is connected with the auxiliary power supply (d) and is used for controlling the working state of the auxiliary power supply,
the charging cable is connected with a charging connection cable (c) with a vehicle plug and is used for acquiring the charging demand information of the vehicle;
the direct current metering equipment (b) is connected with a charging connection cable (c) with a vehicle plug and is used for metering output direct current electric energy;
and the auxiliary power supply (d) is connected with a charging connection cable (c) with a vehicle plug and used for outputting working power to the vehicle.
7. A control method of a power intelligent distribution charging system is characterized by comprising the following steps:
the new car joins the distribution process, including:
acquiring the residual power of the charging station in the current period, and determining a charging scheme based on an excitation factor mu according to the residual power, wherein the excitation factor mu is used for determining the charging priority, and the larger the excitation factor mu is, the higher the charging priority is;
according to the selection of a user, determining a specific charging scheme of the excitation factor mu to charge the electric vehicle;
a dynamic power allocation procedure comprising:
acquiring limited total power PN of a power distribution network distributed to a charging station in the current period and current used power PC of the charging station;
generating a new charging scheme based on the excitation factor mu according to the limited total power PN of the power distribution network distributed to the charging stations in the current period;
if the PN is more than or equal to the PC, the charging is executed according to the new charging scheme;
if PN is less than PC, acquiring the corresponding excitation factor mu of all the electric vehicles being charged in the charging station, preferentially reducing the charging power of the electric vehicle with the minimum excitation factor mu, if the reduced charging power reaches the preset minimum power, and the PN is still less than the PC, continuing to reduce the charging power of the electric vehicle with the second minimum excitation factor mu on the basis of the preset minimum power, and so on until the PN is more than or equal to the PC, and completing dynamic power distribution.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114290937A (en) * | 2021-11-24 | 2022-04-08 | 国网北京市电力公司 | Electric vehicle charging processing method and device and electronic equipment |
| CN114312429A (en) * | 2022-01-26 | 2022-04-12 | 国网福建省电力有限公司 | Electric automobile charging pile control method based on intelligent fusion terminal and internet of things switch |
| CN114312431A (en) * | 2021-12-27 | 2022-04-12 | 绿能慧充数字技术有限公司 | Charging power intelligent distribution method for charging pile |
| CN114683906A (en) * | 2022-03-30 | 2022-07-01 | 国网电力科学研究院有限公司 | Charging system based on ChaoJi charging interface |
| CN117353190A (en) * | 2023-12-04 | 2024-01-05 | 浙江本色电力设备有限公司 | Intelligent power distribution method and system for inflatable cabinet |
| CN114290937B (en) * | 2021-11-24 | 2024-04-26 | 国网北京市电力公司 | Electric automobile charging processing method and device and electronic equipment |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114290937A (en) * | 2021-11-24 | 2022-04-08 | 国网北京市电力公司 | Electric vehicle charging processing method and device and electronic equipment |
| CN114290937B (en) * | 2021-11-24 | 2024-04-26 | 国网北京市电力公司 | Electric automobile charging processing method and device and electronic equipment |
| CN114312431A (en) * | 2021-12-27 | 2022-04-12 | 绿能慧充数字技术有限公司 | Charging power intelligent distribution method for charging pile |
| CN114312429A (en) * | 2022-01-26 | 2022-04-12 | 国网福建省电力有限公司 | Electric automobile charging pile control method based on intelligent fusion terminal and internet of things switch |
| CN114683906A (en) * | 2022-03-30 | 2022-07-01 | 国网电力科学研究院有限公司 | Charging system based on ChaoJi charging interface |
| CN114683906B (en) * | 2022-03-30 | 2024-01-30 | 国网电力科学研究院有限公司 | Charging system based on ChaoJi charging interface |
| CN117353190A (en) * | 2023-12-04 | 2024-01-05 | 浙江本色电力设备有限公司 | Intelligent power distribution method and system for inflatable cabinet |
| CN117353190B (en) * | 2023-12-04 | 2024-02-13 | 浙江本色电力设备有限公司 | Intelligent power distribution method and system for inflatable cabinet |
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