CN113022360A - Energy distribution method and device for charging station - Google Patents

Energy distribution method and device for charging station Download PDF

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Publication number
CN113022360A
CN113022360A CN202110279723.XA CN202110279723A CN113022360A CN 113022360 A CN113022360 A CN 113022360A CN 202110279723 A CN202110279723 A CN 202110279723A CN 113022360 A CN113022360 A CN 113022360A
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Prior art keywords
power
vehicle
charged
charging
charging station
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CN202110279723.XA
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CN113022360B (en
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邵祥生
陈健
王方龙
张�浩
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Kemais New Energy Technology Co ltd
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Kemais New Energy Technology Co ltd
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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
    • B60L53/63—Monitoring or controlling charging stations in response to network capacity
    • 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
    • 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
    • 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
    • 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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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The embodiment of the invention provides an energy distribution method and device for a charging station, and the main scheme of the invention comprises the following steps: after receiving a charging instruction triggered by a battery management system of a vehicle to be charged, comparing the maximum allowable power of a charging station with the actual power of the charging station; if the actual power of the charging station is greater than the maximum allowable power, determining that a capacity gap exists; calculating whether the output power of the vehicle to be charged meets the capacity gap in real time; and if the output power of the vehicle to be charged does not meet the capacity gap, performing virtual capacity expansion according to a preset priority order, and distributing charging power for the vehicle to be charged. From this, through virtual dilatation technique, through supply side (charging station) dispatch, the mode of demand side (waiting to charge the vehicle) dispatch realizes the high-efficient utilization to current resource, and more reasonable distribution, under the prerequisite that does not increase place and power consumption capacity, can hold more waiting to charge the vehicle.

Description

Energy distribution method and device for charging station
Technical Field
The invention relates to the technical field of electric automobiles, in particular to an energy distribution method of a charging station, an energy distribution method device of the charging station, computer equipment and a non-transitory computer readable storage medium.
Background
At present, automobile pollution is a main approach of environmental pollution, and the prevention and treatment of automobile pollution for the sustainable development of human beings become an irreparable global problem, and pure electric vehicles for solving the problem are raised accordingly.
The sales volume of pure electric vehicles increases explosively, but the charging pile matched with the pure electric vehicles is limited by the limitation of sites and/or power utilization capacity, and because the electric resources belong to the national through management and distribution and the improvement of the site area and the power utilization capacity is very difficult, how to distribute the limited charging resources is a problem which needs to be solved urgently at present.
Disclosure of Invention
The invention provides an energy distribution method and device for a charging station to solve the technical problems, and the control circuit can adjust and correct the switching time of a switching tube during current conversion in real time according to the voltage, the current and the temperature of an auxiliary resonant current conversion pole converter, realize temperature compatibility, ensure the optimal switching time of the switching tube, and realize soft switching-on and working at the optimal efficiency point.
The technical scheme adopted by the invention is as follows:
an embodiment of a first aspect of the present invention provides an energy distribution method for a charging station, including:
after receiving a charging instruction triggered by a battery management system of a vehicle to be charged, comparing the maximum allowable power of a charging station with the actual power of the charging station;
if the actual power of the charging station is greater than the maximum allowable power, determining that a capacity gap exists;
calculating whether the output power of the vehicle to be charged meets the capacity gap in real time;
and if the output power of the vehicle to be charged does not meet the capacity gap, performing virtual capacity expansion according to a preset priority order, and distributing charging power for the vehicle to be charged.
According to an embodiment of the invention, the method further comprises:
and if the output power of the vehicle to be charged meets the capacity gap, responding to a charging instruction triggered by a battery management system of the vehicle to be charged so as to convert alternating current into direct current and transmit the direct current to the vehicle to be charged.
According to an embodiment of the present invention, when the preset priority order is the owner level of the vehicle to be charged, performing virtual capacity expansion according to the preset priority order, and allocating charging power to the vehicle to be charged includes:
distributing charging power to the vehicle to be charged with high priority by the following formula:
Pvipallow＝(1+Value％)*Pallow/((1+Value％)*Numvip+Numnonvip)；
distributing charging power to the vehicle to be charged with low priority by the following formula:
Pnonvipallow＝Pallow/((1+Value％)*Numvip+Numnonvip)
wherein, PvipallowMaximum allowable charging power, P, for high priority vehicles to be chargednonvipallowAn allowable maximum charging power for a vehicle to be charged having a low priority; prateStation rated power, P, of charging stationrealFor charging station actual power, PallowMaximum power allowed for charging station, NumvipNumber of vehicles to be charged, Num, of high prioritynonvipThe number of vehicles to be charged with low priority;
according to an embodiment of the present invention, when the preset priority order is a lifetime of a battery of the vehicle to be charged, performing virtual capacity expansion according to the preset priority order, and allocating charging power to the vehicle to be charged includes:
acquiring request power in a charging instruction triggered by a battery management system;
and if the requested power is larger than a preset threshold value, reducing the requested power to the power corresponding to the preset threshold value, wherein the preset threshold value is a threshold value set for each vehicle.
According to an embodiment of the invention, the method further comprises:
receiving an ordered charging instruction sent by a national power grid platform through an ordered charging management cloud platform, wherein the ordered charging instruction comprises a power limiting value;
receiving the ordered charging instruction sent by the ordered charging management cloud platform through an energy management system so as to distribute and manage the electric energy;
outputting the electric energy to the charging pile group through a power transformation system to provide the electric energy;
the charging pile group is used for converting alternating current into direct current, and outputting direct current voltage and current according to the instruction of a vehicle-end battery management system so as to provide energy for the vehicle to be charged;
the charging pile group is connected with the power transformation system, receives electric energy, is connected with an energy management system and receives an energy management instruction;
and respectively acquiring voltage, current and temperature information through a sampling system, and transmitting acquired data to an energy management system through a communication bus.
In a second aspect of the present invention, an energy distribution apparatus for a charging station is provided, including:
the comparison unit is used for comparing the maximum allowable power of the charging station with the actual power of the charging station after receiving a charging instruction triggered by a battery management system of the vehicle to be charged;
the determining unit is used for determining that a capacity gap exists when the comparing unit determines that the actual power of the charging station is larger than the maximum allowable power;
the calculating unit is used for calculating whether the output power of the vehicle to be charged meets the capacity gap determined by the determining unit in real time;
and the processing unit is used for performing virtual capacity expansion according to a preset priority order and distributing charging power for the vehicle to be charged when the calculating unit determines that the output power of the vehicle to be charged does not meet the capacity gap.
According to an embodiment of the invention, the apparatus further comprises:
and the response unit is used for responding to a charging instruction triggered by a battery management system of the vehicle to be charged when the calculation unit determines that the output power of the vehicle to be charged meets the capacity gap, so as to convert the alternating current into the electric energy of the direct current and transmit the electric energy to the vehicle to be charged.
According to an embodiment of the present invention, when the preset priority order is the owner grade of the vehicle to be charged, the processing unit is further configured to:
distributing charging power to the vehicle to be charged with high priority by the following formula:
Pvipallow＝(1+Value％)*Pallow/((1+Value％)*Numvip+Numnonvip)；
distributing charging power to the vehicle to be charged with low priority by the following formula:
Pnonvipallow＝Pallow/((1+Value％)*Numvip+Numnonvip)
wherein, PvipallowMaximum allowable charging power, P, for high priority vehicles to be chargednonvipallowAn allowable maximum charging power for a vehicle to be charged having a low priority; prateStation rated power, P, of charging stationrealFor charging station actual power, PallowMaximum power allowed for charging station, NumvipNumber of vehicles to be charged, Num, of high prioritynonvipThe number of vehicles to be charged with low priority;
according to an embodiment of the present invention, when the preset priority order is a lifetime of a battery of the vehicle to be charged, the processing unit includes:
the acquisition module is used for acquiring the requested power in a charging instruction triggered by the battery management system;
and the processing module is used for reducing the requested power to the power corresponding to a preset threshold value when the requested power is determined to be larger than the preset threshold value, wherein the preset threshold value is a threshold value set for each vehicle.
According to an embodiment of the invention, the apparatus further comprises:
the system comprises a first receiving unit, a second receiving unit and a control unit, wherein the first receiving unit is used for receiving an ordered charging instruction sent by a national power grid platform through an ordered charging management cloud platform, and the ordered charging instruction comprises a power limiting value;
the second receiving unit is used for receiving the ordered charging instruction sent by the ordered charging management cloud platform through an energy management system so as to distribute and manage the electric energy;
the first output unit is used for outputting electric energy to the charging pile group through the power transformation system so as to provide the electric energy;
the conversion unit is used for converting alternating current into direct current through the charging pile group;
the second output unit is used for outputting direct-current voltage and current according to the instruction of the vehicle-end battery management system and providing energy for the vehicle to be charged;
the receiving and transmitting unit is connected with the power transformation system through the charging pile group, receives electric energy, is connected with an energy management system and receives an energy management instruction;
and the acquisition unit is used for acquiring voltage, current and temperature information through the sampling system respectively and transmitting the acquired data to the energy management system through a communication bus.
A third aspect embodiment of the present invention provides a computer device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the program, the computer device implements the energy distribution method for a charging station according to any one of the first aspect of the claims.
A fourth aspect of the present invention provides a non-transitory computer-readable storage medium, on which a computer program is stored, wherein the program, when executed by a processor, implements the energy distribution method for a charging station according to any one of the first aspect.
The invention has the beneficial effects that:
according to the energy distribution method and device for the charging station, provided by the embodiment of the invention, after a charging instruction triggered by a battery management system of a vehicle to be charged is received, the maximum allowable power of the charging station is compared with the actual power of the charging station; if the actual power of the charging station is greater than the maximum allowable power, determining that a capacity gap exists; calculating whether the output power of the vehicle to be charged meets the capacity gap in real time; and if the output power of the vehicle to be charged does not meet the capacity gap, performing virtual capacity expansion according to a preset priority order, and distributing charging power for the vehicle to be charged. From this, through virtual dilatation technique, through supply side (charging station) dispatch, the mode of demand side (waiting to charge the vehicle) dispatch realizes the high-efficient utilization to current resource, and more reasonable distribution, under the prerequisite that does not increase place and power consumption capacity, can hold more waiting to charge the vehicle.
Drawings
Fig. 1 is a block diagram illustrating an energy distribution system of a charging station according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating an energy distribution method for a charging station according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating an energy distribution method for a charging station according to another embodiment of the present invention;
fig. 4 is a block diagram illustrating an energy distribution apparatus of a charging station according to an embodiment of the present invention;
fig. 5 is a block diagram illustrating an energy distribution apparatus of another charging station according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments 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.
To better explain the content of the embodiment of the present invention, the main components of the system are described first, as shown in fig. 1, the system is mainly composed of an ordered charging management cloud platform, a power transformation and collection system, a charging pile group system, a vehicle and an energy management system, wherein,
the ordered charging management cloud platform is interconnected and intercommunicated with the national power grid platform and used for receiving ordered charging instructions sent by the national power grid platform, wherein the ordered charging instructions comprise power limiting values; in addition, the ordered charging optical disc platform also needs to be linked with an energy management system, and the execution actions processed by the ordered charging management platform are sent to the energy management system for distribution and execution;
the power transformation system outputs the electric energy to the charging pile group to provide the electric energy;
the charging pile group is used for converting alternating current into direct current, outputting direct current voltage and current according to an instruction of a vehicle-end battery management system and providing energy for a vehicle to be charged; the charging pile group is connected with the power transformation system, receives electric energy, is connected with an energy management system and receives an energy management instruction; the charging pile group provided by the embodiment of the invention also has a function of protecting people and equipment, so that the charging pile group can be used more safely;
the sampling system respectively collects voltage, current and temperature information and sends the collected data to the energy management system through the communication bus.
In the embodiment of the invention, the vehicle to be charged can be used as a service object of the charging pile to purchase electric energy, and can also be used as a power supply provider to sell electric energy to the charging pile.
On the basis of the system shown in fig. 1, an embodiment of the present invention provides an energy distribution method for a charging station, as shown in fig. 2, including:
101. after receiving a charging instruction triggered by a battery management system of a vehicle to be charged, comparing the maximum allowable power of a charging station with the actual power of the charging station;
shown in FIG. 2The method of (2) may also be referred to as "virtual capacity expansion" in the implementation process, i.e. the orderly charging of the power supply side. The virtual capacity expansion means that when the capacity of a charging station cannot be changed, the method provided by the embodiment of the invention can realize the function of charging more vehicles by accessing, and the algorithm needs to rely on the collection of big data in the station, and comprises the following steps: rated power P of charging stationrateActual power P of charging stationrealMaximum power P allowed by charging stationallowAnd so on.
Rated power P based on electric field stationrateCalculating the maximum allowable power P of the charging stationallow＝PrateDeRate, wherein DeRate is an ordered charging instruction.
102. If the actual power of the charging station is greater than the maximum allowable power, determining that a capacity gap exists;
in practical application, the actual power P of the charging station can be directly usedrealMaximum power P allowed by charging stationallowBy subtraction, i.e. calculating the capacity gap P in real timereal-PallowWhen the result is positive, it indicates that there is a capacity gap, and when the result is negative, it indicates that the capacity is sufficient.
103. Calculating whether the output power of the vehicle to be charged meets the capacity gap in real time;
minimum SOC satisfying power-on and power-selling functionminOn the premise of the capacity gap, whether the output power of the vehicle to be charged meets the capacity gap or not is calculated in real time, namely the output power is compared with the capacity gap, and the purpose is to determine whether the fixed electric energy source in the station can meet the charging supply of the vehicle to be charged at present.
104. And if the output power of the vehicle to be charged does not meet the capacity gap, performing virtual capacity expansion according to a preset priority order, and distributing charging power for the vehicle to be charged.
The preset priority order in the embodiment of the invention comprises two levels, wherein the first level is whether the vehicle owner is a VIP account, namely the VIP account has higher priority than a non-VIP account; the second level is to limit the life of the battery, i.e., for each vehicle. The first level of priority is for the electric energy supply side (charging pile), and the second level of priority is set for the vehicle side to be charged.
According to the energy distribution method of the charging station, after a charging instruction triggered by a battery management system of a vehicle to be charged is received, the maximum allowable power of the charging station is compared with the actual power of the charging station; if the actual power of the charging station is greater than the maximum allowable power, determining that a capacity gap exists; calculating whether the output power of the vehicle to be charged meets the capacity gap in real time; if the output power of the vehicle to be charged does not meet the capacity gap, performing virtual capacity expansion according to a preset priority order, and distributing charging power to the vehicle to be charged.
As a refinement and an extension of step 104, when the preset priority order is the owner rank of the vehicle to be charged, performing virtual capacity expansion according to the preset priority order, and allocating charging power to the vehicle to be charged includes:
distributing charging power to the vehicle to be charged with high priority by the following formula:
Pvipallow＝(1+Value％)*Pallow/((1+Value％)*Numvip+Numnonvip)；
distributing charging power to the vehicle to be charged with low priority by the following formula:
Pnonvipallow＝Pallow/((1+Value％)*Numvip+Numnonvip)
wherein, PvipallowMaximum allowable charging power, P, for high priority vehicles to be chargednonvipallowAn allowable maximum charging power for a vehicle to be charged having a low priority; prateStation rated power, P, of charging stationrealFor charging station actual power, PallowMaximum power allowed for charging station, NumvipNumber of vehicles to be charged, Num, of high prioritynonvipThe number of vehicles to be charged with low priority;
further, the second-level processing with preset priority is more prone to automatically adjusting power distribution by the system, namely when the preset priority order is the service life of the battery of the vehicle to be charged, limit processing is performed on each vehicle, when the power requested by the battery management system BMS is larger than the limit, limit processing is performed, and when the power of the BMS is smaller than or equal to the limit, self-adaptive adjustment is performed by means of the characteristics of the system, so that very high adjustment resolution and very high efficient utilization rate can be achieved. Performing virtual capacity expansion according to a preset priority order, and distributing charging power to the vehicle to be charged comprises: acquiring request power in a charging instruction triggered by a battery management system; and if the requested power is larger than a preset threshold value, reducing the requested power to the power corresponding to the preset threshold value, wherein the preset threshold value is a threshold value set for each vehicle.
For a summary of the above embodiments, please refer to
An embodiment of the present invention further provides an energy distribution method for a charging station, as shown in fig. 3, including:
201. and calculating the maximum allowable power of the charging station.
202. Calculating the actual power of the charging station, and comparing the maximum allowable power of the charging station with the actual power of the charging station;
203. calculating the output power P of the vehicle to be charged in real timedischarge。
If the output power of the vehicle to be charged does not meet the capacity gap, step 204 is executed, and if the output power of the vehicle to be charged meets the capacity gap, step 205 is executed.
204. And performing virtual capacity expansion according to whether the user is a VIP user or not.
If yes, go to step 206; if not, go to step 207.
205. And sending a power output instruction to the BMS to the charging station for actual capacity expansion.
206. A VIP user limit is calculated.
207. non-VIP user limits are calculated.
For detailed descriptions of step 201 to step 207, please refer to the above description, and the embodiments of the present invention are not repeated herein.
Corresponding to the energy distribution method of the charging station, the invention also provides an energy distribution device of the charging station. Since the method embodiment of the present invention corresponds to the circuit embodiment described above, details that are not disclosed in the device embodiment may refer to the method embodiment described above, and are not described herein again.
An energy distribution device of a charging station according to an embodiment of the present invention is shown in fig. 4, and includes:
a comparing unit 31, configured to compare the maximum allowed power of the charging station with the actual power of the charging station after receiving a charging instruction triggered by a battery management system of a vehicle to be charged;
a determining unit 32, configured to determine that a capacity gap exists when the comparing unit 31 determines that the actual power of the charging station is greater than the maximum allowable power;
a calculating unit 33, configured to calculate in real time whether the output power of the vehicle to be charged meets the capacity gap determined by the determining unit;
and the processing unit 34 is configured to, when the calculating unit 33 determines that the output power of the vehicle to be charged does not meet the capacity gap, perform virtual capacity expansion according to a preset priority order, and allocate charging power to the vehicle to be charged.
Further, as shown in fig. 5, the apparatus further includes:
a response unit 35, configured to respond to a charging instruction triggered by a battery management system of the vehicle to be charged when the computing unit 33 determines that the output power of the vehicle to be charged meets the capacity gap, so as to transmit the electric energy converted from the alternating current to the direct current to the vehicle to be charged.
Further, when the preset priority order is the owner rank of the vehicle to be charged, the processing unit 34 is further configured to:
distributing charging power to the vehicle to be charged with high priority by the following formula:
Pvipallow＝(1+Value％)*Pallow/((1+Value％)*Numvip+Numnonvip)；
distributing charging power to the vehicle to be charged with low priority by the following formula:
Pnonvipallow＝Pallow/((1+Value％)*Numvip+Numnonvip)
wherein, PvipallowMaximum allowable charging power, P, for high priority vehicles to be chargednonvipallowAn allowable maximum charging power for a vehicle to be charged having a low priority; prateStation rated power, P, of charging stationrealFor charging station actual power, PallowMaximum power allowed for charging station, NumvipNumber of vehicles to be charged, Num, of high prioritynonvipThe number of vehicles to be charged with low priority;
further, as shown in fig. 5, when the preset priority order is the life of the battery of the vehicle to be charged, the processing unit 34 includes:
an obtaining module 341, configured to obtain a requested power in a charging instruction triggered by a battery management system;
the processing module 342 is configured to, when it is determined that the requested power is greater than a preset threshold, reduce the requested power to a power corresponding to the preset threshold, where the preset threshold is a threshold set for each vehicle.
Further, as shown in fig. 5, the apparatus further includes:
the first receiving unit 36 is configured to receive, through the ordered charging management cloud platform, an ordered charging instruction sent by the national power grid platform, where the ordered charging instruction includes a power limit value;
the second receiving unit 37 is configured to receive, through the energy management system, the ordered charging instruction sent by the ordered charging management cloud platform, so as to distribute and manage the electric energy;
a first output unit 38, configured to output electric energy to the charging pile group through the power transformation system to provide electric energy;
a conversion unit 39 for converting the alternating current into the direct current through the charging pile group;
the second output unit 310 is used for outputting direct-current voltage and current according to an instruction of a vehicle-end battery management system, and providing energy for a vehicle to be charged;
the transceiver unit 311 is configured to connect to the power transformation system through the charging pile group, receive electric energy, connect to an energy management system, and receive an energy management instruction;
and the acquisition unit 312 is configured to acquire voltage, current, and temperature information through the sampling system, and send the acquired data to the energy management system through the communication bus.
According to the energy distribution device of the charging station provided by the embodiment of the invention, after a charging instruction triggered by a battery management system of a vehicle to be charged is received, the maximum allowable power of the charging station is compared with the actual power of the charging station; if the actual power of the charging station is greater than the maximum allowable power, determining that a capacity gap exists; calculating whether the output power of the vehicle to be charged meets the capacity gap in real time; and if the output power of the vehicle to be charged does not meet the capacity gap, performing virtual capacity expansion according to a preset priority order, and distributing charging power for the vehicle to be charged. From this, through virtual dilatation technique, through supply side (charging station) dispatch, the mode of demand side (waiting to charge the vehicle) dispatch realizes the high-efficient utilization to current resource, and more reasonable distribution, under the prerequisite that does not increase place and power consumption capacity, can hold more waiting to charge the vehicle.
In addition, the invention also provides a computer device, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein when the processor executes the program, the energy distribution method of the charging station is realized.
According to the computer device of the embodiment of the invention, when the computer program stored in the memory is run by the processor, after receiving a charging instruction triggered by a battery management system of a vehicle to be charged, the maximum allowable power of the charging station is compared with the actual power of the charging station; if the actual power of the charging station is greater than the maximum allowable power, determining that a capacity gap exists; calculating whether the output power of the vehicle to be charged meets the capacity gap in real time; and if the output power of the vehicle to be charged does not meet the capacity gap, performing virtual capacity expansion according to a preset priority order, and distributing charging power for the vehicle to be charged. From this, through virtual dilatation technique, through supply side (charging station) dispatch, the mode of demand side (waiting to charge the vehicle) dispatch realizes the high-efficient utilization to current resource, and more reasonable distribution, under the prerequisite that does not increase place and power consumption capacity, can hold more waiting to charge the vehicle.
Furthermore, the invention proposes a non-transitory computer-readable storage medium on which a computer program is stored, which program, when being executed by a processor, implements the energy distribution method of a charging station as described above.
According to a non-transitory computer readable storage medium of an embodiment of the present invention, a computer program stored thereon, when executed by a processor, compares a maximum allowed power of a charging station with an actual power of the charging station upon receiving a charging instruction triggered by a battery management system of a vehicle to be charged; if the actual power of the charging station is greater than the maximum allowable power, determining that a capacity gap exists; calculating whether the output power of the vehicle to be charged meets the capacity gap in real time; and if the output power of the vehicle to be charged does not meet the capacity gap, performing virtual capacity expansion according to a preset priority order, and distributing charging power for the vehicle to be charged. From this, through virtual dilatation technique, through supply side (charging station) dispatch, the mode of demand side (waiting to charge the vehicle) dispatch realizes the high-efficient utilization to current resource, and more reasonable distribution, under the prerequisite that does not increase place and power consumption capacity, can hold more waiting to charge the vehicle.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. A method for distributing energy to a charging station, comprising:
after receiving a charging instruction triggered by a battery management system of a vehicle to be charged, comparing the maximum allowable power of a charging station with the actual power of the charging station;
if the actual power of the charging station is greater than the maximum allowable power, determining that a capacity gap exists;
calculating whether the output power of the vehicle to be charged meets the capacity gap in real time;
and if the output power of the vehicle to be charged does not meet the capacity gap, performing virtual capacity expansion according to a preset priority order, and distributing charging power for the vehicle to be charged.
2. The method for energy distribution to a charging station of claim 1, further comprising:
and if the output power of the vehicle to be charged meets the capacity gap, responding to a charging instruction triggered by a battery management system of the vehicle to be charged so as to convert alternating current into direct current and transmit the direct current to the vehicle to be charged.
3. The energy distribution method of the charging station according to claim 1, wherein when the preset priority order is the owner level of the vehicle to be charged, performing virtual capacity expansion according to the preset priority order, and distributing charging power to the vehicle to be charged comprises:
distributing charging power to the vehicle to be charged with high priority by the following formula:
Pvipallow＝(1+Value％)*Pallow/((1+Value％)*Numvip+Numnonvip)；
distributing charging power to the vehicle to be charged with low priority by the following formula:
Pnonvipallow＝Pallow/((1+Value％)*Numvip+Numnonvip)；
wherein, PvipallowMaximum allowable charging power, P, for high priority vehicles to be chargednonvipallowAn allowable maximum charging power for a vehicle to be charged having a low priority; prateStation rated power, P, of charging stationrealFor charging station actual power, PallowMaximum power allowed for charging station, NumvipNumber of vehicles to be charged, Num, of high prioritynonvipThe number of vehicles to be charged having a low priority.
4. The energy distribution method of the charging station according to claim 3, wherein when the preset priority order is the life of the battery of the vehicle to be charged, performing virtual expansion according to the preset priority order, and distributing charging power to the vehicle to be charged comprises:
acquiring request power in a charging instruction triggered by a battery management system;
and if the requested power is larger than a preset threshold value, reducing the requested power to the power corresponding to the preset threshold value, wherein the preset threshold value is a threshold value set for each vehicle.
5. The method for energy distribution to a charging station according to any of claims 1 to 4, characterized in that it further comprises:
receiving an ordered charging instruction sent by a national power grid platform through an ordered charging management cloud platform, wherein the ordered charging instruction comprises a power limiting value;
receiving the ordered charging instruction sent by the ordered charging management cloud platform through an energy management system so as to distribute and manage the electric energy;
outputting the electric energy to the charging pile group through a power transformation system to provide the electric energy;
the charging pile group is used for converting alternating current into direct current, and outputting direct current voltage and current according to the instruction of a vehicle-end battery management system so as to provide energy for the vehicle to be charged;
the charging pile group is connected with the power transformation system, receives electric energy, is connected with an energy management system and receives an energy management instruction;
and respectively acquiring voltage, current and temperature information through a sampling system, and transmitting acquired data to an energy management system through a communication bus.
6. An energy distribution device for a charging station, comprising:
the comparison unit is used for comparing the maximum allowable power of the charging station with the actual power of the charging station after receiving a charging instruction triggered by a battery management system of the vehicle to be charged;
the determining unit is used for determining that a capacity gap exists when the comparing unit determines that the actual power of the charging station is larger than the maximum allowable power;
the calculating unit is used for calculating whether the output power of the vehicle to be charged meets the capacity gap determined by the determining unit in real time;
and the processing unit is used for performing virtual capacity expansion according to a preset priority order and distributing charging power for the vehicle to be charged when the calculating unit determines that the output power of the vehicle to be charged does not meet the capacity gap.
7. The energy distribution apparatus of a charging station according to claim 6, characterized in that said apparatus further comprises:
and the response unit is used for responding to a charging instruction triggered by a battery management system of the vehicle to be charged when the calculation unit determines that the output power of the vehicle to be charged meets the capacity gap, so as to convert the alternating current into the electric energy of the direct current and transmit the electric energy to the vehicle to be charged.
8. The energy distribution device of the charging station according to claim 6, wherein when the predetermined priority order is the owner rank of the vehicle to be charged, the processing unit is further configured to:
distributing charging power to the vehicle to be charged with high priority by the following formula:
Pvipallow＝(1+Value％)*Pallow/((1+Value％)*Numvip+Numnonvip)；
distributing charging power to the vehicle to be charged with low priority by the following formula:
Pnonvipallow＝Pallow/((1+Value％)*Numvip+Numnonvip)；
wherein, PvipallowMaximum allowable charging power, P, for high priority vehicles to be chargednonvipallowAn allowable maximum charging power for a vehicle to be charged having a low priority; prateStation rated power, P, of charging stationrealFor charging station actual power, PallowMaximum power allowed for charging station, NumvipNumber of vehicles to be charged, Num, of high prioritynonvipThe number of vehicles to be charged having a low priority.
9. The energy distribution apparatus of a charging station according to claim 8, wherein when the preset priority order is a lifetime of a battery of the vehicle to be charged, the processing unit includes:
the acquisition module is used for acquiring the requested power in a charging instruction triggered by the battery management system;
and the processing module is used for reducing the requested power to the power corresponding to a preset threshold value when the requested power is determined to be larger than the preset threshold value, wherein the preset threshold value is a threshold value set for each vehicle.
10. The energy distribution device of a charging station according to any of claims 6 to 9, characterized in that it further comprises:
the system comprises a first receiving unit, a second receiving unit and a control unit, wherein the first receiving unit is used for receiving an ordered charging instruction sent by a national power grid platform through an ordered charging management cloud platform, and the ordered charging instruction comprises a power limiting value;
the second receiving unit is used for receiving the ordered charging instruction sent by the ordered charging management cloud platform through an energy management system so as to distribute and manage the electric energy;
the first output unit is used for outputting electric energy to the charging pile group through the power transformation system so as to provide the electric energy;
the conversion unit is used for converting alternating current into direct current through the charging pile group;
the second output unit is used for outputting direct-current voltage and current according to the instruction of the vehicle-end battery management system and providing energy for the vehicle to be charged;
the receiving and transmitting unit is connected with the power transformation system through the charging pile group, receives electric energy, is connected with an energy management system and receives an energy management instruction;
and the acquisition unit is used for acquiring voltage, current and temperature information through the sampling system respectively and transmitting the acquired data to the energy management system through a communication bus.
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