CN112937342A - Electric vehicle power sharing group charging system and method thereof - Google Patents
Electric vehicle power sharing group charging system and method thereof Download PDFInfo
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- 238000010248 power generation Methods 0.000 claims description 11
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/30—Constructional details of charging stations
- B60L53/31—Charging columns specially adapted for electric vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/66—Data transfer between charging stations and vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/67—Controlling two or more charging stations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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Abstract
The invention relates to a power sharing group charging system and a method thereof for an electric vehicle, wherein the system comprises a power converter station, the input end of the power converter station is respectively connected to an energy storage battery and an alternating current power grid, the output end of the power converter station is connected with a plurality of charging piles corresponding to different charging parking places, the power converter station and the charging piles are respectively connected to a controller, and the power converter station is used for carrying out DC/DC conversion on direct current electric energy output by the energy storage battery and AC/DC conversion on alternating current electric energy output by the alternating current power grid so as to output the chargeable direct current electric energy to the charging piles; and the controller respectively controls the working states of the power converter station and each charging pile according to the charging power of the automobile to be charged. Compared with the prior art, the method and the device can automatically distribute power according to the charging power required by the electric automobile so as to charge different electric automobiles as required, and effectively solve the problem of charging the electric automobiles in groups.
Description
Technical Field
The invention relates to the technical field of electric vehicle charging, in particular to an electric vehicle power sharing group charging system and a method thereof.
Background
Along with the gradual strengthening of environmental awareness of people and the requirement of social development of a new era on environmental protection, electric automobiles are more and more valued by people. The quantity of electric vehicles in China is far greater than that of charging piles, and by 12 months in 2019, the overall pile ratio in China is 3.4:1, which is far lower than 1:1 planned in the guidance for development of electric vehicle charging infrastructures (2015-charge 2020), so that the construction of the charging piles is urgently accelerated and the utilization rate of the charging piles is improved.
The charging pile mainly comprises a pile body, an electrical module, a metering module and the like, generally has the functions of electric energy metering, charging, communication, control and the like, and can be divided into a direct current fast charging type and an alternating current slow charging type according to different charging powers. The present electric pile that fills electric power generally derives from the electric wire netting, and electric automobile fills electric pile's power supply mode and generally is unified by the electricity distribution room and distributes, fills electric pile and mostly is the integral type, a parking stall, a power promptly. When a plurality of electric vehicles with different charging requirements are charged simultaneously, the charging mode easily causes the power load requirement to be increased, and the problem of charging the electric vehicles in groups cannot be solved.
Disclosure of Invention
The present invention is directed to overcome the above-mentioned drawbacks of the prior art, and provides a power sharing group charging system for electric vehicles and a method thereof, so as to effectively solve the problem of group charging for electric vehicles.
The purpose of the invention can be realized by the following technical scheme: the power sharing group charging system of the electric automobile comprises a power converter station, wherein the input end of the power converter station is respectively connected to an energy storage battery and an alternating current power grid, the output end of the power converter station is connected with a plurality of charging piles corresponding to different charging parking places, the power converter station and the charging piles are respectively connected to a controller, and the power converter station is used for carrying out DC/DC conversion on direct current electric energy output by the energy storage battery and AC/DC conversion on alternating current electric energy output by the alternating current power grid so as to output the chargeable direct current electric energy to the charging piles;
and the controller respectively controls the working states of the power converter station and each charging pile according to the charging power of the automobile to be charged.
Further, the power converter station comprises a DC-DC conversion module and an AC-DC conversion module, the DC-DC conversion module comprises a plurality of DC/DC conversion units connected in parallel, the AC-DC conversion module comprises a plurality of AC/DC conversion units connected in parallel, one DC/DC conversion unit comprises a plurality of DC/DC converters connected in parallel, and one AC/DC conversion unit comprises a plurality of AC/DC converters connected in parallel.
Further, the DC/DC conversion Unit is correspondingly connected with a PDU (Power Distribution Unit) switch matrix, and each switch element in the PDU switch matrix corresponds to each DC/DC converter of the DC/DC conversion Unit.
Further, the AC/DC conversion Unit is correspondingly connected with a PDU (Power Distribution Unit) switch matrix, and each switch element in the PDU switch matrix corresponds to each AC/DC converter of the AC/DC conversion Unit.
Further, the energy storage battery is respectively connected with the photovoltaic power generation unit and the wind power generation unit.
Furthermore, the energy storage battery is connected to an alternating current power grid through an inverter, a control end of the inverter is connected with the controller, and the controller correspondingly controls the working state of the inverter.
Further, the charging pile position is provided with a camera, the camera is connected with the controller and used for shooting a picture of the automobile to be charged at the charging pile position and sending the picture to the controller, the automobile model of the automobile to be charged is identified by the controller, and corresponding charging power data is obtained.
Further, the controller is connected with a database, and a plurality of electric automobile image data sets corresponding to different automobile models and electric automobile charging power data corresponding to different automobile models are stored in the database.
A power sharing group charging method for an electric vehicle comprises the following steps:
s1, the controller acquires the electric automobile charging power data of the current charging pile position;
s2, according to the charging power data of the electric automobile, the controller firstly judges whether the electric quantity of the energy storage battery is larger than the charging power data of the electric automobile, if so, the step S3 is executed, otherwise, the step S4 is executed;
s3, according to the charging power data of the electric automobile, the controller distributes power to each DC/DC conversion unit in the DC-DC conversion module in the power converter station, and correspondingly controls the on and off of each switch element in a PDU switch matrix connected with the DC/DC conversion unit so as to obtain electric energy from the energy storage battery to charge the electric automobile;
the controller monitors whether the DC/DC converter in the working state is damaged or not in real time, if the controller monitors that one DC/DC converter in the working state is damaged, other DC/DC converters are started randomly as a substitute, and meanwhile, the switching-on and the switching-off of the switch elements in the PDU switch matrix are correspondingly controlled, so that the electric energy obtained from the energy storage battery is ensured to be continuously stable;
s4, according to the charging power data of the electric automobile, the controller distributes power to each AC/DC conversion unit in the AC-DC conversion module in the power converter station, and correspondingly controls the on and off of each switch element in a PDU switch matrix connected with the AC/DC conversion unit so as to obtain electric energy from an AC power grid to charge the electric automobile;
the controller monitors whether the AC/DC converter in the working state is damaged or not in real time, if the AC/DC converter in the working state is monitored to be damaged, other AC/DC converters are started randomly to be used as a substitute, and meanwhile, the switching-on and switching-off of the switch elements in the PDU switch matrix are correspondingly controlled, so that the electric energy obtained from the alternating current power grid is ensured to be continuously stable.
Further, the step S1 specifically includes the following steps:
s11, the controller acquires an image of the automobile to be charged at the position of the charging pile;
s12, the controller compares the acquired image with an electric automobile image data set in the database, and the automobile model of the automobile to be charged is determined through image recognition;
and S13, according to the automobile model of the automobile to be charged, the controller searches the database to obtain charging power data corresponding to the automobile to be charged.
Compared with the prior art, the invention has the following advantages:
the charging method comprises the steps that a power converter station is arranged, the input end of the power converter station is connected to an energy storage battery and an alternating current power grid respectively, the output end of the power converter station is connected with a plurality of charging piles corresponding to different charging parking places, the power converter station is utilized to carry out DC/DC conversion on direct current electric energy output by the energy storage battery and AC/DC conversion on alternating current electric energy output by the alternating current power grid, and rechargeable direct current electric energy is output to the charging piles; and the controller is used for respectively controlling the working states of the power converter station and each charging pile, so that different charging piles can simultaneously charge different electric vehicles, and the purpose of power sharing group charging is realized.
Secondly, a plurality of DC/DC converters are connected in parallel to form a DC/DC conversion unit, and then the plurality of DC/DC conversion units are connected in parallel to form a DC-DC conversion module; connecting the AC/DC converters in parallel to form an AC/DC conversion unit, and connecting a plurality of AC/DC conversion units in parallel to form an AC-DC conversion module; and each DC/DC conversion unit and each AC/DC conversion unit are correspondingly connected to the PDU switch matrix, so that each switch element in the PDU switch matrix corresponds to the DC/DC converter and the AC/DC converter one by one, and under the control action of the controller, after the charging power data of the automobile to be charged is obtained, the purposes of automatically distributing power and automatically starting the DC/DC converter or the AC/DC converter can be realized, so that the diversity of charging power of the charging pile is increased, and the charging requirements of different electric automobiles are met.
The method and the device can automatically, quickly and accurately acquire the model of the automobile to be charged and the corresponding charging power by acquiring the image of the automobile to be charged at the position of the charging pile based on an image recognition technology, and ensure the accuracy of automatic power distribution by combining the control of the controller on the working state of the power converter station, so that different electric automobiles can accurately obtain electric energy according to the requirements.
And fourthly, the invention adopts a mode that the converters are connected in parallel, and utilizes the controller to monitor whether the DC/DC converter or the AC/DC converter in the working state is damaged or not in real time, and once a certain converter is damaged, the rest converters are automatically started, thereby ensuring the stability of the charging power.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a schematic diagram illustrating a charging principle of the charging pile in the embodiment;
FIG. 3 is a schematic diagram of a power converter station in an embodiment;
FIG. 4 is a schematic flow chart of the method of the present invention;
the notation in the figure is: 1. the system comprises a power converter station, 2, an energy storage battery, 3, an alternating current power grid, 4, a charging pile, 5, a controller, 101, a direct current-direct current conversion module, 102 and an alternating current-direct current conversion module.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
Examples
As shown in fig. 1, an electric vehicle power sharing group charging system includes a power converter station 1, an input end of the power converter station 1 is connected to an energy storage battery 2 and an alternating current power grid 3, an output end of the power converter station 1 is connected to a plurality of charging piles 4 corresponding to different charging parking spaces, the power converter station 1 and the charging piles 4 are connected to a controller 5, in this embodiment, as shown in fig. 2, the energy storage battery 2 is connected to a photovoltaic power generation unit and a wind power generation unit, the energy storage battery 2 is further connected to the alternating current power grid 3 through an inverter (DC/AC), a wind and photovoltaic hybrid clean power generation system is formed by photovoltaic power generation and wind power generation, when the wind and photovoltaic hybrid power generation electric quantity is insufficient, the charging piles 4 obtain electric energy from the alternating current power grid 3 to charge the electric vehicle, so as to ensure that; when the wind-solar hybrid power generation system has redundant electric energy, the electric energy stored in the energy storage battery 2 can be inverted and fed back to the alternating current power grid 3. The control end of the inverter is connected with the controller 5, that is, the controller 5 correspondingly controls the working state of the inverter.
In the power sharing group charging system of the electric automobile, the power converter station 1 is used for performing DC/DC conversion on the direct current electric energy output by the energy storage battery 2 and performing AC/DC conversion on the alternating current electric energy output by the alternating current power grid 3 so as to output the chargeable direct current electric energy to the charging pile 4; the controller 5 controls the working states of the power converter station 1 and the charging piles 4 respectively according to the charging power of the automobile to be charged.
The power converter station 1 includes a DC-DC conversion module 101 and an AC-DC conversion module 102, as shown in fig. 3, the DC-DC conversion module 101 includes a plurality of DC/DC conversion units connected in parallel, the AC-DC conversion module 102 includes a plurality of AC/DC conversion units connected in parallel, one DC/DC conversion unit is composed of a plurality of DC/DC converters connected in parallel, and one AC/DC conversion unit is composed of a plurality of AC/DC converters connected in parallel.
Each DC/DC conversion unit is correspondingly connected with a PDU switch matrix, and each switch element in the PDU switch matrix corresponds to each DC/DC converter of the DC/DC conversion unit; similarly, each AC/DC conversion unit is correspondingly connected with a PDU switch matrix, and each switch element in the PDU switch matrix corresponds to each AC/DC converter of the AC/DC conversion unit.
In practical application, in order to ensure that the charging power data of the automobile to be charged at the position of the charging pile can be automatically and accurately obtained, the camera is arranged at the position of the charging pile and is connected with the controller, the image of the automobile to be charged at the position of the charging pile is shot by the camera and then is sent to the controller, and then the controller identifies the automobile model of the automobile to be charged based on an image identification technology and obtains the corresponding charging power data.
The controller is connected with a database, and a plurality of electric automobile image data sets corresponding to different automobile models and electric automobile charging power data corresponding to different automobile models are stored in the database.
The power sharing system of the electric vehicle is applied to practice, and a specific power sharing group charging method is shown in fig. 4, and includes the following steps:
s1, the controller acquires the electric automobile charging power data of the current charging pile position, and concretely comprises the following steps:
firstly, the controller acquires an image of an automobile to be charged at the position of a charging pile;
then, the controller compares the acquired image with an electric automobile image data set in the database, and determines the automobile model of the automobile to be charged through image recognition;
then according to the automobile model of the automobile to be charged, the controller searches in the database to obtain charging power data corresponding to the automobile to be charged;
s2, according to the charging power data of the electric automobile, the controller firstly judges whether the electric quantity of the energy storage battery is larger than the charging power data of the electric automobile, if so, the step S3 is executed, otherwise, the step S4 is executed;
s3, according to the charging power data of the electric automobile, the controller distributes power to each DC/DC conversion unit in the DC-DC conversion module in the power converter station, and correspondingly controls the on and off of each switch element in a PDU switch matrix connected with the DC/DC conversion unit so as to obtain electric energy from the energy storage battery to charge the electric automobile;
the controller monitors whether the DC/DC converter in the working state is damaged or not in real time, if the controller monitors that one DC/DC converter in the working state is damaged, other DC/DC converters are started randomly as a substitute, and meanwhile, the switching-on and the switching-off of the switch elements in the PDU switch matrix are correspondingly controlled, so that the electric energy obtained from the energy storage battery is ensured to be continuously stable;
s4, according to the charging power data of the electric automobile, the controller distributes power to each AC/DC conversion unit in the AC-DC conversion module in the power converter station, and correspondingly controls the on and off of each switch element in a PDU switch matrix connected with the AC/DC conversion unit so as to obtain electric energy from an AC power grid to charge the electric automobile;
the controller monitors whether the AC/DC converter in the working state is damaged or not in real time, if the AC/DC converter in the working state is monitored to be damaged, other AC/DC converters are started randomly to be used as a substitute, and meanwhile, the switching-on and switching-off of the switch elements in the PDU switch matrix are correspondingly controlled, so that the electric energy obtained from the alternating current power grid is ensured to be continuously stable.
In conclusion, the technical scheme utilizes wind, light, storage and power grid to supply power, can improve the utilization rate of clean energy, reduce environmental pollution and reduce the impact of large-scale electric automobile charging on the power grid;
in the power converter station, a plurality of DC/DC converters are connected in parallel to form a DC-DC conversion module, a plurality of AC/DC converters are connected in parallel to form an AC-DC conversion module, and the DC/DC converters or the AC/DC converters can be dynamically distributed according to the charging power actually required by the electric automobile by combining the control action of a PDU switch matrix and a controller, so that the defect of one pile of power and one pile of power is overcome, and the diversity of the charging power of a charging pile is increased;
in addition, by adopting the parallel connection mode of the converters, once a certain converter is damaged, the rest converters can be automatically switched on, and the charging power is ensured to be continuously stable and unchanged.
Claims (10)
1. The power sharing group charging system of the electric automobile is characterized by comprising a power converter station (1), wherein the input end of the power converter station (1) is respectively connected to an energy storage battery (2) and an alternating current power grid (3), the output end of the power converter station (1) is connected with a plurality of charging piles (4) corresponding to different charging parking spaces, the power converter station (1) and the charging piles (4) are respectively connected to a controller (5), and the power converter station (1) is used for performing DC/DC conversion on direct current electric energy output by the energy storage battery (2) and performing AC/DC conversion on alternating current electric energy output by the alternating current power grid (3) so as to output the chargeable direct current electric energy to the charging piles (4);
and the controller (5) respectively controls the working states of the power converter station (1) and each charging pile (4) according to the charging power of the automobile to be charged.
2. The electric vehicle power sharing group charging system according to claim 1, wherein the power converter station (1) comprises a DC-DC conversion module (101) and an AC-DC conversion module (102), the DC-DC conversion module (101) comprises a plurality of DC/DC conversion units connected in parallel, the AC-DC conversion module (102) comprises a plurality of AC/DC conversion units connected in parallel, one DC/DC conversion unit comprises a plurality of DC/DC converters connected in parallel, and one AC/DC conversion unit comprises a plurality of AC/DC converters connected in parallel.
3. The electric vehicle power sharing group charging system according to claim 2, wherein the DC/DC conversion unit is correspondingly connected with a PDU switch matrix, and each switch element in the PDU switch matrix corresponds to each DC/DC converter of the DC/DC conversion unit.
4. The electric vehicle power sharing group charging system according to claim 3, wherein the AC/DC conversion unit is correspondingly connected with a PDU switch matrix, and each switch element in the PDU switch matrix corresponds to each AC/DC converter of the AC/DC conversion unit.
5. The electric vehicle power sharing group charging system according to claim 1, wherein the energy storage battery (2) is respectively connected with a photovoltaic power generation unit and a wind power generation unit.
6. The electric vehicle power sharing group charging system according to claim 5, wherein the energy storage battery (2) is connected to the alternating current grid (3) through an inverter, a control end of the inverter is connected with the controller (5), and the controller (5) correspondingly controls the working state of the inverter.
7. The electric vehicle power sharing group charging system according to claim 4, wherein a camera is arranged at the position of the charging pile (4), the camera is connected with the controller (5) and is used for taking a picture of the vehicle to be charged at the position of the charging pile (4) and sending the picture to the controller (5), and the controller (5) identifies the vehicle model of the vehicle to be charged and obtains corresponding charging power data.
8. The electric vehicle power sharing group charging system according to claim 7, wherein the controller (5) is connected with a database, and a plurality of electric vehicle image data sets corresponding to different vehicle models and electric vehicle charging power data corresponding to different vehicle models are stored in the database.
9. An electric vehicle power sharing group charging method for the electric vehicle power sharing group charging system according to claim 8, comprising the steps of:
s1, the controller acquires the electric automobile charging power data of the current charging pile position;
s2, according to the charging power data of the electric automobile, the controller firstly judges whether the electric quantity of the energy storage battery is larger than the charging power data of the electric automobile, if so, the step S3 is executed, otherwise, the step S4 is executed;
s3, according to the charging power data of the electric automobile, the controller distributes power to each DC/DC conversion unit in the DC-DC conversion module in the power converter station, and correspondingly controls the on and off of each switch element in a PDU switch matrix connected with the DC/DC conversion unit so as to obtain electric energy from the energy storage battery to charge the electric automobile;
the controller monitors whether the DC/DC converter in the working state is damaged or not in real time, if the controller monitors that one DC/DC converter in the working state is damaged, other DC/DC converters are started randomly as a substitute, and meanwhile, the switching-on and the switching-off of the switch elements in the PDU switch matrix are correspondingly controlled, so that the electric energy obtained from the energy storage battery is ensured to be continuously stable;
s4, according to the charging power data of the electric automobile, the controller distributes power to each AC/DC conversion unit in the AC-DC conversion module in the power converter station, and correspondingly controls the on and off of each switch element in a PDU switch matrix connected with the AC/DC conversion unit so as to obtain electric energy from an AC power grid to charge the electric automobile;
the controller monitors whether the AC/DC converter in the working state is damaged or not in real time, if the AC/DC converter in the working state is monitored to be damaged, other AC/DC converters are started randomly to be used as a substitute, and meanwhile, the switching-on and switching-off of the switch elements in the PDU switch matrix are correspondingly controlled, so that the electric energy obtained from the alternating current power grid is ensured to be continuously stable.
10. The electric vehicle power sharing group charging method according to claim 9, wherein the step S1 specifically comprises the steps of:
s11, the controller acquires an image of the automobile to be charged at the position of the charging pile;
s12, the controller compares the acquired image with an electric automobile image data set in the database, and the automobile model of the automobile to be charged is determined through image recognition;
and S13, according to the automobile model of the automobile to be charged, the controller searches the database to obtain charging power data corresponding to the automobile to be charged.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113335108A (en) * | 2021-06-21 | 2021-09-03 | 金炫宇 | Charging system and method suitable for new energy electric automobile |
| CN113859009A (en) * | 2021-09-27 | 2021-12-31 | 国网北京市电力公司 | Charging pile power supply method and device, storage medium and processor |
| CN117621891A (en) * | 2024-01-25 | 2024-03-01 | 杭州闪充聚能新能源有限公司 | Vehicle charging system and energy storage device |
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