CN113682186A - Electric vehicle charging system, method, electronic device and computer readable medium - Google Patents

Electric vehicle charging system, method, electronic device and computer readable medium Download PDF

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Publication number
CN113682186A
CN113682186A CN202110817112.6A CN202110817112A CN113682186A CN 113682186 A CN113682186 A CN 113682186A CN 202110817112 A CN202110817112 A CN 202110817112A CN 113682186 A CN113682186 A CN 113682186A
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CN
China
Prior art keywords
electric
charging
battery pack
lithium battery
electric energy
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Pending
Application number
CN202110817112.6A
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Chinese (zh)
Inventor
董志伟
耿向真
张麾
史迪新
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Qingdao Nengfeng Electric Co ltd
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Qingdao Nengfeng Electric Co ltd
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Priority to CN202110817112.6A priority Critical patent/CN113682186A/en
Publication of CN113682186A publication Critical patent/CN113682186A/en
Pending legal-status Critical Current

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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
    • 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
    • B60L53/50—Charging stations characterised by energy-storage or power-generation means
    • B60L53/51—Photovoltaic means
    • 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
    • B60L53/50—Charging stations characterised by energy-storage or power-generation means
    • B60L53/53—Batteries
    • 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
    • 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
    • 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
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28—Arrangements for balancing of the load in a network by storage of energy
    • H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
    • 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
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/381—Dispersed generators
    • 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
    • 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
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • 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
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H02J7/04—Regulation of charging current or voltage
    • 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
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
    • 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
    • H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/20—The dispersed energy generation being of renewable origin
    • H02J2300/22—The renewable source being solar energy
    • H02J2300/24—The renewable source being solar energy of photovoltaic origin
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E70/00—Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
    • 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)

Abstract

The present disclosure relates to an electric vehicle charging system, method, electronic device, and computer readable medium. The system comprises: the slow charging unit is used for providing electric energy for the electric automobile by first current according to the charging request of the electric automobile; the quick charging unit is used for providing electric energy for the electric automobile by using second current according to the charging request of the electric automobile; the lithium battery pack is used for storing electric energy and providing the electric energy for the slow charging unit and the fast charging unit according to the instruction; and the direct current conversion unit is used for converting the photovoltaic electric energy into direct current electric energy to provide electric energy for the lithium battery pack. The electric vehicle charging system, the electric vehicle charging method, the electronic device and the computer readable medium can be directly matched with an existing charging pile for use, the charging time is shortened in a slow charging mode, the electric power construction undertaking is reduced in a fast charging mode, the peak load regulation requirement of a power grid can be responded, and the pressure of the power grid is reduced.

Description

Electric vehicle charging system, method, electronic device and computer readable medium
Technical Field
The present disclosure relates to the field of electric vehicle charging, and in particular, to an electric vehicle charging system, method, electronic device, and computer readable medium.
Background
In the currently constructed charging pile, alternating-current slow charging piles account for a great proportion, the charging speed of the alternating-current slow charging piles is low, the charging requirements of users are difficult to meet, and the laying cost of a direct-current fast charging pile power transmission network is high, so that large-scale investment is difficult;
the high-power direct current charging pile greatly increases the load of a power grid during peak operation, the power supply impact on the power grid is great, and meanwhile, due to the fact that the power supply capacity is determined during design, the reconstruction and extension work quantity is large in the future and the cost is high.
At present, the electricity supply in China is still mainly based on thermal power, and the new energy electric automobile is not actually matched with clean energy such as wind and light, so that the requirement of reducing carbon emission in China cannot be met
Therefore, a new electric vehicle charging system, method, electronic device and computer readable medium are needed.
The above information disclosed in this background section is only for enhancement of understanding of the background of the disclosure and therefore it may contain information that does not constitute prior art that is already known to a person of ordinary skill in the art.
Disclosure of Invention
In view of this, the present disclosure provides an electric vehicle charging system, a method, an electronic device, and a computer readable medium, which can be directly used in a charging pile, shorten the charging time in a slow charging mode, reduce the electric power construction and support in a fast charging mode, and respond to the peak load demand of the power grid to reduce the power grid pressure.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows, or in part will be obvious from the description, or may be learned by practice of the disclosure.
According to an aspect of the present disclosure, an electric vehicle charging system is provided, the system including: the slow charging unit is used for providing electric energy for the electric automobile by first current according to the charging request of the electric automobile; the quick charging unit is used for providing electric energy for the electric automobile by using second current according to the charging request of the electric automobile; the lithium battery pack is used for storing electric energy and providing the electric energy for the slow charging unit and the fast charging unit according to the instruction; and the direct current conversion unit is used for converting the photovoltaic electric energy into direct current electric energy to provide electric energy for the lithium battery pack.
Optionally, the method further comprises: and the management system is used for receiving a charging request of the electric automobile and controlling the slow charging unit or the fast charging unit to provide electric energy according to the charging request of the electric automobile.
Optionally, the management system is further configured to determine that the electric vehicle charging system enters a photovoltaic power generation mode, a peak shaving operating mode, an energy storage operating mode, or a vehicle charging mode according to the electric quantity of the lithium battery pack and an external instruction.
Optionally, the management system is further configured to control the bidirectional inverter to feed back the electric energy output by the photovoltaic panel to the power grid when the electric quantity of the lithium battery pack is greater than a first threshold; and the photovoltaic panel is also used for controlling the lithium battery pack to be charged when the electric quantity of the lithium battery pack is smaller than a first threshold value.
Optionally, the management system is further configured to control the bidirectional inverter to feed back the electric quantity of the lithium battery pack to the power grid when the peak shaving instruction is received and the electric quantity of the lithium battery pack is greater than a second threshold value.
Optionally, the management system is further configured to control the bidirectional inverter to charge the lithium battery pack when the electric quantity of the lithium battery pack is smaller than a first threshold.
Optionally, the slow charging unit comprises: the intelligent bidirectional electric meter is used for acquiring electric energy data of a power grid and an electric vehicle charging system and transmitting electric energy between the power grid and the electric vehicle charging system; the bidirectional inverter is used for performing operation on the lithium battery pack and/or feeding electric energy back to a power grid; and the slow charging interface is used for connecting the electric automobile to provide electric energy for the electric automobile.
Optionally, the quick-charging unit includes: the direct current converter is used for converting the electric energy of the lithium battery pack into alternating current electric energy and transmitting the alternating current electric energy to the quick charging interface; and the quick charging interface is used for connecting the electric automobile to provide electric energy for the electric automobile.
According to an aspect of the present disclosure, a method for charging an electric vehicle is provided, the method including: acquiring an electric vehicle charging request from a user; setting charging parameters based on the electric vehicle charging request; controlling a direct current conversion unit to charge the electric automobile based on the charging parameters; and when the electric quantity of the lithium battery pack is smaller than the electric quantity threshold value, the electric automobile is charged and the lithium battery pack is charged.
Optionally, the method further comprises: monitoring the electric quantity of the lithium battery pack in real time; monitoring a power grid instruction and photovoltaic panel output information of photovoltaic power generation in real time; and controlling the electric automobile charging system to enter a photovoltaic power generation mode or a peak shaving working mode or an energy storage working mode or an automobile charging mode based on the electric quantity of the lithium battery pack, a power grid instruction and the output information of the photovoltaic power generation photovoltaic panel.
According to an aspect of the present disclosure, an electronic device is provided, the electronic device including: one or more processors; storage means for storing one or more programs; when executed by one or more processors, cause the one or more processors to implement a method as above.
According to an aspect of the disclosure, a computer-readable medium is proposed, on which a computer program is stored, which program, when being executed by a processor, carries out the method as above.
According to the electric automobile charging system, the method, the electronic equipment and the computer readable medium of the present disclosure, the electric automobile charging system comprises: the slow charging unit is used for providing electric energy for the electric automobile by first current according to the charging request of the electric automobile; the quick charging unit is used for providing electric energy for the electric automobile by using second current according to the charging request of the electric automobile; the lithium battery pack is used for storing electric energy and providing the electric energy for the slow charging unit and the fast charging unit according to the instruction; the direct current conversion unit is used for converting photovoltaic electric energy into direct current electric energy to provide electric energy for the lithium battery pack, can be directly matched with an existing charging pile for use, shortens charging time in a slow charging mode, reduces electric power construction and accommodation in a fast charging mode, can respond to peak load regulation requirements of a power grid, and reduces power grid pressure.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings. The drawings described below are merely some embodiments of the present disclosure, and other drawings may be derived from those drawings by those of ordinary skill in the art without inventive effort.
Fig. 1 is a system block diagram illustrating an electric vehicle charging system according to an exemplary embodiment.
Fig. 2 is a system block diagram illustrating an electric vehicle charging system in accordance with an exemplary embodiment.
Fig. 3 is a flow chart illustrating a method of charging an electric vehicle according to an exemplary embodiment.
Fig. 4 is a flowchart illustrating an electric vehicle charging method according to another exemplary embodiment.
Fig. 5 is a flowchart illustrating an electric vehicle charging method according to another exemplary embodiment.
Fig. 6 is a flowchart illustrating an electric vehicle charging method according to another exemplary embodiment.
FIG. 7 is a block diagram illustrating an electronic device in accordance with an example embodiment.
FIG. 8 is a block diagram illustrating a computer-readable medium in accordance with an example embodiment.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals denote the same or similar parts in the drawings, and thus, a repetitive description thereof will be omitted.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the subject matter of the present disclosure can be practiced without one or more of the specific details, or with other methods, components, devices, steps, and so forth. In other instances, well-known methods, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the disclosure.
The block diagrams shown in the figures are functional entities only and do not necessarily correspond to physically separate entities. I.e. these functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor means and/or microcontroller means.
The flow charts shown in the drawings are merely illustrative and do not necessarily include all of the contents and operations/steps, nor do they necessarily have to be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.
It will be understood that, although the terms first, second, third, etc. may be used herein to describe various components, these components should not be limited by these terms. These terms are used to distinguish one element from another. Thus, a first component discussed below may be termed a second component without departing from the teachings of the disclosed concept. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
It is to be understood by those skilled in the art that the drawings are merely schematic representations of exemplary embodiments, and that the blocks or processes shown in the drawings are not necessarily required to practice the present disclosure and are, therefore, not intended to limit the scope of the present disclosure.
In view of the problems in the prior art, the photovoltaic energy storage and charging integrated equipment has the advantages of low construction cost, small power grid demand capacity, high-power charging support, and capability of accessing clean energy such as wind and light. The following is a detailed description with the aid of specific examples.
Fig. 1 is a system block diagram illustrating an electric vehicle charging system according to an exemplary embodiment. The electric vehicle charging system 10 may include: the system comprises a slow charging unit 102, a fast charging unit 104, a lithium battery pack 106, a direct current conversion unit 108 and a management system 110. The electric vehicle charging system 10 may further include: cloud server 112.
The slow charging unit 102 is used for providing electric energy for the electric automobile by first current according to the charging request of the electric automobile; the slow charging unit 102 includes:
the intelligent bidirectional electric meter 1022 is used for acquiring electric energy data of the power grid and the electric vehicle charging system 10 and performing electric energy transmission between the power grid and the electric vehicle charging system;
the bidirectional inverter 1024 is used for charging the lithium battery pack 106 and/or feeding electric energy back to a power grid; the bi-directional inverter 1024 may be, for example, a grid-connected bi-directional inverter. And the off-grid bidirectional inverter is used for charging the lithium battery pack 106 and feeding electric energy back to the power grid.
The slow charging interface 1026 is used to connect an electric vehicle to provide power thereto.
The quick charging unit 104 is used for providing electric energy for the electric automobile by using a second current according to the electric automobile charging request; the quick charging unit 104 includes:
the direct current converter 1042 is configured to convert the electric energy of the lithium battery pack 106 into alternating current electric energy, and transmit the alternating current electric energy to the fast charging interface 1044; the direct current converter 1042 is responsible for converting the electric energy of the lithium battery pack 106 into the electric energy required by the new energy automobile to charge the automobile.
The quick charging interface 1044 is used for connecting the electric vehicle to provide electric energy for the electric vehicle.
The lithium battery pack 106 is used for storing electric energy and providing the electric energy for the slow charging unit 102 and the fast charging unit 104 according to instructions; the lithium battery pack 106 is used for storing electric energy and providing the electric energy to the bidirectional inverter 1024 and the dc conversion unit 1042.
The dc conversion unit 108 is configured to convert the photovoltaic electric energy into dc electric energy to provide electric energy for the lithium battery pack 106. The dc conversion unit 108 may be, for example, an MPPT dc conversion unit, and is responsible for converting the photovoltaic electric energy into the lithium battery pack 106, the inverter 1024, and the dc conversion unit 1042.
The management system 110 is configured to receive a charging request of an electric vehicle, and control the slow charging unit 102 or the fast charging unit 104 to provide electric energy according to the charging request of the electric vehicle. The management system 110 may be, for example, an EMS energy management system. The EMS energy management system is responsible for controlling the operation of the MPPT dc conversion unit 1042, the bidirectional inverter 1024 and other modules, the data interaction of the lithium battery pack 106, the human-computer interaction and the like.
The management system 110 is further configured to determine that the electric vehicle charging system enters a photovoltaic power generation mode, a peak shaving operation mode, an energy storage operation mode, or a vehicle charging mode according to the electric quantity of the lithium battery pack and an external instruction.
The management system 110 is further configured to control the bidirectional inverter to feed back the electric energy output by the photovoltaic panel to the power grid when the electric quantity of the lithium battery pack is greater than a first threshold value; and the photovoltaic panel is also used for controlling the lithium battery pack to be charged when the electric quantity of the lithium battery pack is smaller than a first threshold value.
The management system 110 is further configured to control the bidirectional inverter to feed back the electric quantity of the lithium battery pack to the power grid when the peak shaving instruction is received and the electric quantity of the lithium battery pack is greater than a second threshold value.
The management system 110 is further configured to control the bi-directional inverter to charge the lithium battery pack when the electric quantity of the lithium battery pack is less than a first threshold.
The cloud server 112 may be used to communicate with the EMS energy management system, account confirmation, data storage, etc.;
fig. 2 is a system block diagram illustrating an electric vehicle charging system in accordance with an exemplary embodiment. As can be seen from fig. 2, the management system 110 is connected to the driving control of each unit, and the management system 110 is further configured to collect data, where the specific data includes: and vehicle charging related data, unit related data, power grid data, user data and vehicle information which are normally charged. The management system 110 is further configured to perform data processing, which specifically includes: and uploading data, storing data, supporting a man-machine interaction function, processing an instruction of a cloud server, and processing a fault when the charging vehicle has a fault.
Compared with the prior art, the electric vehicle charging system can be directly matched and used on the basis of the existing slow charging pile, the electric power matching does not need to be expanded, and meanwhile compared with the slow charging pile, the electric vehicle charging system supports high-power charging and greatly shortens the vehicle charging time; compared with the existing quick-charging pile, the pile does not need to be matched with a high-power transmission and distribution facility, and can effectively reduce the power construction cost; the matched lithium battery pack can form a power reservoir, can perform energy storage and buffering on power consumption and respond to peak regulation requirements of a power grid; the equipment is provided with a photovoltaic interface, and can be connected with a photovoltaic energy source to realize the maximum reduction of carbon emission.
In an application scene, the electric automobile charging system monitors the electric quantity of the lithium battery pack in real time; monitoring a power grid instruction and photovoltaic panel output information of photovoltaic power generation in real time; and controlling the electric automobile charging system to enter a photovoltaic power generation mode or a peak shaving working mode or an energy storage working mode or an automobile charging mode based on the electric quantity of the lithium battery pack, a power grid instruction and the output information of the photovoltaic power generation photovoltaic panel.
In an application scene of electric vehicle charging, an electric vehicle charging system acquires an electric vehicle charging request from a user; setting charging parameters based on the electric vehicle charging request; controlling a direct current conversion unit to charge the electric automobile based on the charging parameters; and when the electric quantity of the lithium battery pack is smaller than the electric quantity threshold value, the electric automobile is charged and the lithium battery pack is charged.
Fig. 3 is a flow chart illustrating a method of charging an electric vehicle according to an exemplary embodiment. The electric vehicle charging method 30 is a specific description of the photovoltaic power generation mode, and the electric vehicle charging method 30 includes at least steps S302 to S312.
As shown in fig. 3, in S302, the computer is powered on.
In S304, whether the photovoltaic panel output satisfies the startup condition.
In S306, MPPT is turned on.
In S308, it is determined whether the battery pack capacity is less than 100%.
In S310, less than 100%, the lithium battery pack is charged.
In S312, which is equal to 110%, the inverter is started and peak shaving power generation is performed.
In a photovoltaic power generation mode, the MPPT direct current change unit detects that the output voltage of an accessed photovoltaic panel reaches a starting voltage, the MPPT starting is started, the EMS judges whether to charge the battery according to the SOC state of the battery, the SOC of the battery is lower than 100%, MPPT output preferentially charges the battery, and when the battery is in a full-power state, the EMS controls the two-way inverter to start, feeds power to a power grid and enters the photovoltaic power generation mode.
Fig. 4 is a flowchart illustrating an electric vehicle charging method according to another exemplary embodiment. The electric vehicle charging method 40 is a specific description of the peak shaving mode, and the electric vehicle charging method 40 includes at least steps S402 to S408.
As shown in fig. 4, in S402, a peak shaver instruction is acquired.
In S404, it is determined whether the battery capacity of the lithium battery pack is less than a second threshold.
In S406, the inverter is started.
In S408, peak shaving power generation is performed.
In the peak regulation mode, a power supply department issues a peak regulation instruction to a cloud server, the cloud server issues the instruction to an EMS energy management system, the EMS system judges whether the peak regulation instruction can be responded according to battery SOC information fed back by a battery system, a battery pack is electrified (SOC is more than 20%), and the EMS controls a bidirectional inverter to feed power to a power grid according to parameters required by the cloud server to enter the power grid peak regulation mode.
Fig. 5 is a flowchart illustrating an electric vehicle charging method according to another exemplary embodiment. The electric vehicle charging method 50 is a specific description of the energy storage mode, and the electric vehicle charging method 50 at least includes steps S502 to S508.
As shown in fig. 5, in S502, the computer is powered on.
In S504, it is determined whether the battery capacity of the lithium battery pack is less than a first threshold.
In S506, the inverter is started.
In S508, the lithium battery pack is charged.
In the energy storage mode, after the system is started, the EMS system judges whether the battery needs to be charged or not according to the SOC information of the battery fed back by the battery system, the electric quantity of the battery is insufficient (the SOC is less than 100%), the EMS controls the bidirectional inverter to start to charge the battery, an electric energy reservoir is formed, and the energy storage mode is entered.
Fig. 6 is a flowchart illustrating an electric vehicle charging method according to another exemplary embodiment. The electric vehicle charging method 60 is a specific description of the fast charging mode, and the electric vehicle charging method 60 at least includes steps S602 to S612.
As shown in fig. 6, in S602, parameters are set.
In S604, the gun is inserted.
In S606, whether the power of the lithium battery pack is less than the power threshold.
In S608, the inverter is started to charge the lithium battery pack.
In S610, the dc converter starts charging the electric vehicle.
In S612, the lithium battery pack is not charged.
In the quick charging mode, a user interactively sends a charging demand with an EMS system according to the demand, the EMS starts parameter setting, after the EMS system confirms that a quick charging interface is normally connected with a vehicle, the EMS controls a direct current conversion unit to start the vehicle to be charged, meanwhile, the EMS system judges whether the energy storage battery pack needs to be charged according to the electric quantity information of the battery pack, and when the electric quantity of the battery pack is insufficient, the EMS system simultaneously controls a bidirectional inverter to charge the energy storage battery pack.
According to the electric vehicle charging method disclosed by the invention, the charging pile can be directly matched with an existing charging pile for use, the charging time is shortened in a slow charging mode, the electric power construction acceptance is reduced in a fast charging mode, the peak load regulation requirement of a power grid can be responded, and the pressure of the power grid is reduced.
It should be clearly understood that this disclosure describes how to make and use particular examples, but the principles of this disclosure are not limited to any details of these examples. Rather, these principles can be applied to many other embodiments based on the teachings of the present disclosure.
Those skilled in the art will appreciate that all or part of the steps implementing the above embodiments are implemented as computer programs executed by a CPU. When executed by the CPU, performs the functions defined by the above-described methods provided by the present disclosure. The program may be stored in a computer readable storage medium, which may be a read-only memory, a magnetic or optical disk, or the like.
Furthermore, it should be noted that the above-mentioned figures are only schematic illustrations of the processes involved in the methods according to exemplary embodiments of the present disclosure, and are not intended to be limiting. It will be readily understood that the processes shown in the above figures are not intended to indicate or limit the chronological order of the processes. In addition, it is also readily understood that these processes may be performed synchronously or asynchronously, e.g., in multiple modules.
FIG. 7 is a block diagram illustrating an electronic device in accordance with an example embodiment.
An electronic device 700 according to this embodiment of the disclosure is described below with reference to fig. 7. The electronic device 700 shown in fig. 7 is only an example and should not bring any limitation to the functions and the scope of use of the embodiments of the present disclosure.
As shown in fig. 7, electronic device 700 is embodied in the form of a general purpose computing device. The components of the electronic device 700 may include, but are not limited to: at least one processing unit 710, at least one memory unit 720, a bus 730 that connects the various system components (including the memory unit 720 and the processing unit 710), a display unit 740, and the like.
Wherein the storage unit stores program code that can be executed by the processing unit 710 to cause the processing unit 710 to perform the steps according to various exemplary embodiments of the present disclosure in the present specification. For example, the processing unit 710 may perform the steps as shown in fig. 3, 4, 5, 6.
The memory unit 720 may include readable media in the form of volatile memory units, such as a random access memory unit (RAM)7201 and/or a cache memory unit 7202, and may further include a read only memory unit (ROM) 7203.
The memory unit 720 may also include a program/utility 7204 having a set (at least one) of program modules 7205, such program modules 7205 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which, or some combination thereof, may comprise an implementation of a network environment.
Bus 730 may be any representation of one or more of several types of bus structures, including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.
The electronic device 700 may also communicate with one or more external devices 700' (e.g., keyboard, pointing device, bluetooth device, etc.), such that a user can communicate with devices with which the electronic device 700 interacts, and/or any devices (e.g., router, modem, etc.) with which the electronic device 700 can communicate with one or more other computing devices. Such communication may occur via an input/output (I/O) interface 750. Also, the electronic device 700 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network such as the internet) via the network adapter 760. The network adapter 770 may communicate with other modules of the electronic device 700 via the bus 730. It should be appreciated that although not shown in the figures, other hardware and/or software modules may be used in conjunction with the electronic device 700, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, among others.
Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein may be implemented by software, or by software in combination with necessary hardware. Therefore, as shown in fig. 8, the technical solution according to the embodiment of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a usb disk, a removable hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which may be a personal computer, a server, or a network device, etc.) to execute the above method according to the embodiment of the present disclosure.
The software product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
The computer readable storage medium may include a propagated data signal with readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A readable storage medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a readable storage medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Program code for carrying out operations for the present disclosure may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., through the internet using an internet service provider).
The computer readable medium carries one or more programs which, when executed by a device, cause the computer readable medium to perform the functions of: monitoring the electric quantity of the lithium battery pack in real time; monitoring a power grid instruction and photovoltaic panel output information of photovoltaic power generation in real time; and controlling the electric automobile charging system to enter a photovoltaic power generation mode or a peak shaving working mode or an energy storage working mode or an automobile charging mode based on the electric quantity of the lithium battery pack, a power grid instruction and the output information of the photovoltaic power generation photovoltaic panel.
Those skilled in the art will appreciate that the modules described above may be distributed in the apparatus according to the description of the embodiments, or may be modified accordingly in one or more apparatuses unique from the embodiments. The modules of the above embodiments may be combined into one module, or further split into multiple sub-modules.
Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein may be implemented by software, or by software in combination with necessary hardware. Therefore, the technical solution according to the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a usb disk, a removable hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which may be a personal computer, a server, a mobile terminal, or a network device, etc.) to execute the method according to the embodiments of the present disclosure.
Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that the present disclosure is not limited to the precise arrangements, instrumentalities, or instrumentalities described herein; on the contrary, the disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims (12)

1. An electric vehicle charging system, comprising:
the slow charging unit is used for providing electric energy for the electric automobile by first current according to the charging request of the electric automobile;
the quick charging unit is used for providing electric energy for the electric automobile by using second current according to the charging request of the electric automobile;
the lithium battery pack is used for storing electric energy and providing the electric energy for the slow charging unit and the fast charging unit according to the instruction;
and the direct current conversion unit is used for converting the photovoltaic electric energy into direct current electric energy to provide electric energy for the lithium battery pack.
2. The electric vehicle charging system of claim 1, further comprising:
and the management system is used for receiving a charging request of the electric automobile and controlling the slow charging unit or the fast charging unit to provide electric energy according to the charging request of the electric automobile.
3. The electric vehicle charging system of claim 2,
the management system is further used for determining that the electric automobile charging system enters a photovoltaic power generation mode, a peak shaving working mode, an energy storage working mode or an automobile charging mode according to the electric quantity of the lithium battery pack and an external instruction.
4. The electric vehicle charging system of claim 3,
the management system is also used for controlling the bidirectional inverter to feed back the electric energy output by the photovoltaic panel to the power grid when the electric quantity of the lithium battery pack is greater than a first threshold value; and the photovoltaic panel is also used for controlling the lithium battery pack to be charged when the electric quantity of the lithium battery pack is smaller than a first threshold value.
5. The electric vehicle charging system of claim 3,
the management system is further used for controlling the bidirectional inverter to feed back the electric quantity of the lithium battery pack to the power grid when the peak regulation instruction is received and the electric quantity of the lithium battery pack is larger than a second threshold value.
6. The electric vehicle charging system of claim 3,
the management system is further used for controlling the bidirectional inverter to charge the lithium battery pack when the electric quantity of the lithium battery pack is smaller than a first threshold value.
7. The electric vehicle charging system of claim 1, wherein the slow charging unit comprises:
the intelligent bidirectional electric meter is used for acquiring electric energy data of a power grid and an electric vehicle charging system and transmitting electric energy between the power grid and the electric vehicle charging system;
the bidirectional inverter is used for charging the lithium battery pack and/or feeding electric energy back to a power grid;
and the slow charging interface is used for connecting the electric automobile to provide electric energy for the electric automobile.
8. The electric vehicle charging system of claim 1, wherein the quick charge unit comprises:
the direct current converter is used for converting the electric energy of the lithium battery pack into alternating current electric energy and transmitting the alternating current electric energy to the quick charging interface;
and the quick charging interface is used for connecting the electric automobile to provide electric energy for the electric automobile.
9. An electric vehicle charging method, comprising:
monitoring the electric quantity of the lithium battery pack in real time;
monitoring a power grid instruction and photovoltaic panel output information of photovoltaic power generation in real time;
and controlling the electric automobile charging system to enter a photovoltaic power generation mode or a peak shaving working mode or an energy storage working mode or an automobile charging mode based on the electric quantity of the lithium battery pack, a power grid instruction and the output information of the photovoltaic power generation photovoltaic panel.
10. The method of charging an electric vehicle of claim 9, further comprising:
acquiring an electric vehicle charging request from a user;
setting charging parameters based on the electric vehicle charging request;
controlling a direct current conversion unit to charge the electric automobile based on the charging parameters;
and when the electric quantity of the lithium battery pack is smaller than the electric quantity threshold value, the electric automobile is charged and the lithium battery pack is charged.
11. An electronic device, comprising:
one or more processors;
storage means for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement the method of any one of claims 9-10.
12. A computer-readable medium, on which a computer program is stored, which, when being executed by a processor, carries out the method according to any one of claims 9-10.
CN202110817112.6A 2021-07-20 2021-07-20 Electric vehicle charging system, method, electronic device and computer readable medium Pending CN113682186A (en)

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