CN104967175A - Electric vehicle high-power charger and electric vehicle charging realization method - Google Patents
Electric vehicle high-power charger and electric vehicle charging realization method Download PDFInfo
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- CN104967175A CN104967175A CN201510400358.8A CN201510400358A CN104967175A CN 104967175 A CN104967175 A CN 104967175A CN 201510400358 A CN201510400358 A CN 201510400358A CN 104967175 A CN104967175 A CN 104967175A
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- power
- charging
- energy storage
- electric vehicle
- storage system
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses an electric vehicle high-power charger. A charging power converter is used for performing high-power charging on an electric vehicle; a battery energy storage system is composed of an energy storage power converter and an energy storage battery, wherein the energy storage power converter is a bi-directional power converter which can realize bidirectional energy flow; charging connecting lines are connecting lines which are used when the charger changes the battery of the electric vehicle and include a power line and a signal line; and a communication connecting line is connected between the charging power converter and the battery energy storage system and is used for information interaction between the charging power converter and the battery energy storage system. When the charging of the electric vehicle is not in demand, the battery energy storage system performs low-power charging on the energy storage battery of the battery energy storage system; when the high-power charging of the electric vehicle is in demand, the battery energy storage system and a power grid power supply end jointly output power to the charging power converter, and high-power fast charging of the electric vehicle is realized when charging power is higher than the rated power of the power supply end.
Description
Technical field
The invention belongs to field of power electronics, particularly a kind of electric automobile high-power charger and charging electric vehicle implementation method
Background technology
Conventional electric automobile uses LiFePO4 or ternary material as the negative pole of battery, charge rate can only reach about 1C, its charging interval needs more than 2 hours, and use the pure electric automobile of lithium titanate battery, charge rate can reach 6C, within about 10 minutes, can be full of, can the convenience of large increase electric automobile.But the problem that restriction quick charge uses is the charge power needing charger feeder ear to provide larger, especially for some large-scale electric automobiles.As the power using the electronic bus of quick charge to need mains supply end to provide can reach 400kW, for the power supply network built well, the not each feeder ear of power demand large like this can meet.And large charge power can impact the quality of power supply of access point the impact of feeder ear, cause supply power voltage unstable.Therefore need to carry out extending capacity reformation to electrical network, but long to the electric network reconstruction cycle, and costly, the use that have impact on Quick charging electric automobile is promoted.
Biyadi Co Ltd proposes and a kind ofly reduces the scheme of high-power charging to grid power requirement in patent CN200820212892.1, but it is charged to charger by energy storage device completely when charging electric vehicle, need the power of energy storage device too large, cost is very high.
Summary of the invention
Main purpose of the present invention is to propose a kind of electric automobile high-power charger and charging electric vehicle implementation method, is greater than the problem of feeder ear rated power in order to solve charge power, effectively solves the demand of charging station construction to electrical network.
In order to reach above-mentioned purpose, solution of the present invention is: a kind of electric automobile high-power charger, comprises charge power converter, battery energy storage system, charging connection wire and communication wire;
Described charge power converter is used for carrying out high-power charging to electric automobile;
Described battery energy storage system is made up of energy storage power inverter and energy-storage battery, and wherein energy storage power inverter is bidirectional power converter, can realize the two-way flow of energy;
Described charging connection wire be charger to connecting line during charging batteries of electric automobile, comprise power line and holding wire;
Described communication wire is connected between charge power converter and battery energy storage system, for the information interaction between the two.
(1) charge power converter, its AC is connected to feeder ear, when electric automobile charges, is connected with batteries of electric automobile by charging connection wire; (2) battery energy storage system, is made up of energy storage power inverter and energy-storage battery, and its AC is also connected to feeder ear, and wherein energy storage power inverter is bidirectional power converter, can realize the two-way flow of energy; (3) charging connection wire, for charger is to connecting line during charging batteries of electric automobile, comprises power line and holding wire; (4) communication wire, is connected between charge power converter and energy-storage system, for the information interaction between the two.
For solving the problems of the technologies described above, the another kind of technical scheme that the present invention takes is: charging electric vehicle implementation method, comprises the following steps:
(1) when without charging electric vehicle, energy storage power inverter charges to energy-storage battery in the mode of trickle charge, and ensures that charge power is less than the rated power of mains supply end
(2) when there being electric automobile to charge, charge power converter by and the communication of electric automobile obtain required for charging electric vehicle power Q
ccs;
(3) charge power converter calculates the power that battery energy storage system should provide
and by communication, the power instruction of energy-storage system is handed down to energy-storage system, wherein k leaves and takes certain nargin for considering to feeder ear power, gets the numerical value being less than 1;
By with upper type, the high-power quick charge to electric automobile under charge power is greater than feeder ear rated power situation can be realized.
Compared to the prior art the present invention, has following technological merit and beneficial effect:
When electric automobile charges, by energy-storage system and the common power output of feeder ear, while meeting high-power charging, the power of the energy-storage system of needs is also less, and cost is low.
Accompanying drawing explanation
Fig. 1 meets the electric automobile high-power charger principle schematic that charge power is greater than feeder ear rated power.
Embodiment
Main purpose of the present invention is to propose a kind of electric automobile high-power charger and implementation thereof, is greater than the problem of feeder ear rated power in order to solve charge power.
Below with reference to accompanying drawing, technical scheme of the present invention is described in detail.
Embodiment 1
See Fig. 1, this electric automobile high-power charger is made up of charge power converter, battery energy storage system, charging connection wire, communication wire; Described charge power converter is used for carrying out high-power charging to electric automobile; Described battery energy storage system is made up of energy storage power inverter and energy-storage battery, and wherein energy storage power inverter is bidirectional power converter, can realize the two-way flow of energy; Described charging connection wire be charger to connecting line during charging batteries of electric automobile, comprise power line and holding wire; Described communication wire is connected between charge power converter and battery energy storage system, for the information interaction between the two.
Embodiment 2
See Fig. 1, this charging electric vehicle implementation method comprises the following steps:
(1) when without charging electric vehicle, energy storage power inverter charges to energy-storage battery in the mode of trickle charge, and ensures that charge power is less than the rated power of mains supply end
(2) when there being electric automobile to charge, charge power converter obtains the power Q required for charging electric vehicle by charging connection wire and electric automobile communication
ccs;
(3) charge power converter calculates the power that energy-storage system should provide
and by communication wire, the power instruction of energy-storage system is handed down to battery energy storage system, wherein k leaves and takes certain nargin for considering to feeder ear power, gets the number being less than 1;
Above embodiment is only and technological thought of the present invention is described, can not limit protection scope of the present invention with this, and every technological thought proposed according to the present invention, any change that technical scheme basis is done, all falls within scope.
Claims (2)
1. an electric automobile high-power charger, is characterized in that:
Comprise charge power converter, battery energy storage system, charging connection wire and communication wire;
Described charge power converter is used for carrying out high-power charging to electric automobile;
Described battery energy storage system is made up of energy storage power inverter and energy-storage battery, and wherein energy storage power inverter is bidirectional power converter, can realize the two-way flow of energy;
Described charging connection wire be charger to connecting line during charging batteries of electric automobile, comprise power line and holding wire;
Described communication wire is connected between charge power converter and battery energy storage system, for the information interaction between the two.
2. a charging electric vehicle implementation method for electric automobile high-power charger as claimed in claim 1, is characterized in that comprising the following steps:
(1) when without charging electric vehicle, energy storage power inverter charges to energy-storage battery in the mode of trickle charge, and ensures that charge power is less than the rated power of mains supply end
(2) when there being electric automobile to charge, charge power converter obtains the charge power Q required for charging electric vehicle by charging connection wire and electric automobile communication
ccs;
(3) charge power converter calculates the power that energy-storage system should provide
and by communication wire, this power instruction is handed down to battery energy storage system, wherein k leaves and takes certain nargin for considering to feeder ear power, gets the numerical value being less than 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510400358.8A CN104967175A (en) | 2015-07-09 | 2015-07-09 | Electric vehicle high-power charger and electric vehicle charging realization method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510400358.8A CN104967175A (en) | 2015-07-09 | 2015-07-09 | Electric vehicle high-power charger and electric vehicle charging realization method |
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| CN104967175A true CN104967175A (en) | 2015-10-07 |
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| CN201510400358.8A Pending CN104967175A (en) | 2015-07-09 | 2015-07-09 | Electric vehicle high-power charger and electric vehicle charging realization method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109733237A (en) * | 2019-01-21 | 2019-05-10 | 爱驰汽车有限公司 | Methanol recapitalization fuel cell charging method, system, equipment and storage medium |
| CN110497808A (en) * | 2019-08-28 | 2019-11-26 | 哈尔滨理工大学 | A kind of charging system for electric automobile and charging method with a variety of charge modes |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337897A (en) * | 2013-06-08 | 2013-10-02 | 国家电网公司 | Control method for energy storage buffer system of intelligent electric vehicle charging station |
-
2015
- 2015-07-09 CN CN201510400358.8A patent/CN104967175A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337897A (en) * | 2013-06-08 | 2013-10-02 | 国家电网公司 | Control method for energy storage buffer system of intelligent electric vehicle charging station |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109733237A (en) * | 2019-01-21 | 2019-05-10 | 爱驰汽车有限公司 | Methanol recapitalization fuel cell charging method, system, equipment and storage medium |
| CN110497808A (en) * | 2019-08-28 | 2019-11-26 | 哈尔滨理工大学 | A kind of charging system for electric automobile and charging method with a variety of charge modes |
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Application publication date: 20151007 |
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| WD01 | Invention patent application deemed withdrawn after publication |