CN105048612B - A kind of bidirectional electric automobile transmission intelligent charging spot - Google Patents
A kind of bidirectional electric automobile transmission intelligent charging spot Download PDFInfo
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- CN105048612B CN105048612B CN201510262115.2A CN201510262115A CN105048612B CN 105048612 B CN105048612 B CN 105048612B CN 201510262115 A CN201510262115 A CN 201510262115A CN 105048612 B CN105048612 B CN 105048612B
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- 230000005540 biological transmission Effects 0.000 title claims description 12
- 230000002457 bidirectional effect Effects 0.000 title claims description 9
- 238000001514 detection method Methods 0.000 claims abstract description 26
- 238000000605 extraction Methods 0.000 claims abstract description 18
- 238000007665 sagging Methods 0.000 claims description 2
- 238000004146 energy storage Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The invention discloses a kind of intelligent charging spot systems for electric vehicle and Power System Interconnection and energy transmitted in both directions power, which includes information extraction modules, detection module, computing module, transmitted in both directions module, quick charge module.The transmitted in both directions of electric vehicle and grid power may be implemented in charging pile of the present invention and its charging method, and using the large capacity energy storage device of electric vehicle, mains frequency fluctuation is adjusted, and alternative scheme is provided for the stability of intelligent grid.
Description
Technical field
The present invention relates to a kind of bidirectional electric automobiles to transmit intelligent charging spot, belongs to technical field of electric power.
Background technology
With the commercialization of electric vehicle, electric vehicle is connected the influence between V2G (vehicle to grid) with power grid
Also it attracts attention.The large capacity energy storage device that electric vehicle is equipped with can be very good the distributed energy storage equipment as power grid.It is logical
It crosses electric vehicle with power grid to be connected, be deviated come mains frequency caused by solving the problems, such as distributed energy power swing.To electronic
Automobile is controlled using intelligent charge is preset, and the electric vehicle in idle state is combined together, by charging pile to power grid
Two-way power transmission is carried out, is inhibited to be deviated to mains frequency with this.
Electric automobile charging pile is that one kind is fixedly mounted on outside electric vehicle, is connect with power grid, is filled for electric vehicle is vehicle-mounted
Motor provide power supply for electric installation.Traditional charging pile includes：Pile body, electrical module, protection module and metering module.Pile body packet
Shell and human-computer interaction interface are included, according to the difference of mounting means, pile body can be divided into console mode pile body and hanger formula pile body two
Kind.Electrical module includes charging socket, service cable, power supply transfer terminal block etc..Metering module includes electric energy meter, accounting management
System, reader device etc..Traditional charging pile mainly single charge function is carried out to electric vehicle, without consider with
Power grid interacts, this is also the important research direction of intelligent grid, and therefore, the present inventor studies this, special to develop
Go out the intelligent charging spot of the transmitted in both directions power for electric vehicle and power grid.
Invention content
The purpose of the present invention is to provide a kind of function of transmitted in both directions of charging pile, by the information exchange of multiple modules with
And control, it is accomplished for electric vehicle access power grid, inhibited for mains frequency fluctuation caused by access new energy.
To achieve the goals above, solution of the invention is：
It is a kind of to be used for electric vehicle and Power System Interconnection and the charging pile system of energy transmitted in both directions power, the charging pile system packet
Include information extraction modules, detection module, computing module, transmitted in both directions module, quick charge module.Described information extraction module from
Car owner receives information, is connected with computing module, and the detection module is connected by power transmission line with electric vehicle, detection information and meter
Calculation module, transmitted in both directions module are connected with quick charge module, and the computing module is according to information extraction modules and detection module
Data, be connected respectively with transmitted in both directions module and quick charge module, transmitted in both directions module respectively with calculate and quick charge
Module is connected.
Described information extraction module needs to obtain preset charging time T from car owner or user side, and from
The required electric vehicle charged state SOC1 reached when opening.According to the two of extraction parameters, it is connected with the computing module.
The detection module detects battery pack in electric vehicle according to the power transmission line that charging pile is connected with electric vehicle
SOC state SOC2, and be connected with power grid, detect the difference f of power grid current frequency and rated frequency.According to the two of extraction
Parameter is connected with the computing module.
The computing module is connected with the information extraction modules and detection module, according to the information extraction
The parameter T and SOC1 of the module transfer and parameter SOC2 of detection module transmission, calculates under quick charge mode, battery pack
The time T1 that required SOC1 is charged to from SOC2 states calculates the standby time T2=T-T1 of electric vehicle, judges time T2
Whether it is more than 30 minutes.
The computing module is connected in judgement time T2 when more than 30 minutes with the transmitted in both directions module.
The transmitted in both directions module is connected with the computing module and detection module, according to the computing module
The signal T2 of transmission and the SOC2 and f of detection module transmission, are connected to the battery pack of electric vehicle with power grid and take
Droop control.The droop control is to control the charging pile to electric vehicle on the basis of Tracking Frequency of Power Grids deviates f
Battery pack carries out charge and discharge control, and f is deviated in mains frequency>When 0, electric vehicle charging deviates f in mains frequency<When 0, electricity
Electrical automobile battery power discharge.The battery pack SOC balance controls, are to be monitored to the battery pack SOC states, ensure
In charge and discharge process, battery pack is not in overcharge or cross the phenomenon that putting.
The quick charge module is connected with the computing module, transmitted in both directions module and detection module respectively,
The computing module judges standby time T2<When 0, into quick charge module, terminate the spare time in the transmitted in both directions module
After setting time T2, into quick charge module, the detection module provides electric vehicle to the quick charge module
The current SOC states SOC2 of battery pack.The quick charge module mainly carries out the quick of high current to batteries of electric automobile group
Charging is only to be charged and no longer puts into power grid and adjusted with the maximum difference of transmitted in both directions module charging modes
Frequently.
Description of the drawings
Fig. 1 is that the bidirectional electric automobile of the present embodiment transmits charging pile module schematic diagram.
In figure：1-information extraction modules, 2-detection modules, 3-computing modules, 4-transmitted in both directions modules, 5-quickly
Charging module.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of bidirectional electric automobile provided by the invention transmits charging pile, including information extraction modules, inspection
Module, computing module, transmitted in both directions module, quick charge module are surveyed, described information extraction module receives information from car owner, with meter
It calculates module to be connected, the detection module is connected by power transmission line with electric vehicle, detection information and computing module, transmitted in both directions mould
Block is connected with quick charge module, the computing module according to the data of information extraction modules and detection module, respectively with it is two-way
Transmission module is connected with quick charge module, and transmitted in both directions module is connected with calculating and quick charge module respectively.Entire charging
Process since car owner or user begin to use charging pile and input predetermined information, until car owner or user drive to leave charging pile be
Only.
The unbalanced supply-demand of power grid can be obtained by detecting the frequency shift (FS) f for the socket that the charging pile is connected with power grid
, thus electric vehicle be connected with power grid generation power PV2GIt can be controlled according to the droop characteristic of frequency shift (FS) f, it can
：
The maximum power P that wherein batteries of electric automobile group can be output and receivemaxIt is limited by the characteristic of charging pile, electricity
Electrical automobile and power grid coefficient of association KV2GFREQUENCY CONTROL LFC (load frequency control) and battery are loaded by tradeoff
The fluctuation range of SOC is organized to determine.When battery pack SOC is close to full value, high-power charging is limited, in the electronic vapour of long period
In vehicle is connected with power grid, it is contemplated that the frequency shift (FS) f is not zero to be lost with the batteries of electric automobile group, it is assumed that battery pack
SOC can accurately estimate obtain：
Wherein KmaxFor maximum electric vehicle and power grid coefficient of association, SOCmin、SOClow、SOChigh、SOCmaxRespectively institute
State batteries of electric automobile group SOC states be minimum (10%), lower value (20%), high value (80%), peak (90%),
N represents battery pack SOC states and is maintained at 50%.
In order to meet the car owner and the preset charging time T and SOC1 of user, if the scheduled charging time compared with
It is short, then quick charge mode is used, is charged with maximum discharge power.In preset charged ample time, then sagging control is used
It makes to reduce frequency shift (FS).It can be indicated by following formula：
Wherein PSCFor the charge power of battery pack.
Claims (4)
1. a kind of bidirectional electric automobile transmits intelligent charging spot, it is characterised in that：Including information extraction modules, detection module, meter
Module, transmitted in both directions module, quick charge module are calculated, described information extraction module receives information from car owner, with computing module phase
Even, car owner can be freely extracted on charging pile to be arranged needed for preset charging time T and the corresponding car owner of electric vehicle
The electric vehicle charged state SOC1 reached, the detection module are connected by power transmission line with electric vehicle, detection information and meter
Calculation module, transmitted in both directions module are connected with quick charge module, and the computing module is according to information extraction modules and detection module
Data, be connected respectively with transmitted in both directions module and quick charge module, transmitted in both directions module respectively with calculate and quick charge
Module is connected；The charged state SOC1 that described information extraction module is used to extract preset charging time T with require to reach,
And transmit information to the computing module；The detection module for detect batteries of electric automobile group SOC states SOC2 with
Mains frequency deviates f, and detection information is transmitted to the computing module, transmitted in both directions module, quick charge module；It is described
The parameter of parameter T and SOC1 and detection module transmission transmitted according to the information extraction modules of computing module
SOC2 is calculated under quick charge mode, and battery pack charges to the time T1 of required SOC1 from SOC2 states, calculates electric vehicle
Standby time T2=T-T1, judge that electric vehicle is the access transmitted in both directions module, or access institute according to the value of T2
The quick charge module stated.
2. bidirectional electric automobile as described in claim 1 transmits intelligent charging spot, it is characterised in that the transmitted in both directions module
SOC value, mains frequency deviant f and the computing module provided according to the detection module is according to electric vehicle standby time
T2 is connected when T2 setting times are more than 30 minutes with the transmitted in both directions module.
3. bidirectional electric automobile as described in claim 1 transmits intelligent charging spot, it is characterised in that the transmitted in both directions module
The SOC value and mains frequency deviant f provided according to the detection module, is connected using sagging control to electric vehicle with power grid
System, to batteries of electric automobile group using SOC balance controls.
4. bidirectional electric automobile as described in claim 1 transmits intelligent charging spot, it is characterised in that the quick charge module
According to the SOC value that the detection module provides, the charging modes of maximum power are taken electric vehicle.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510262115.2A CN105048612B (en) | 2015-05-21 | 2015-05-21 | A kind of bidirectional electric automobile transmission intelligent charging spot |
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| CN201510262115.2A CN105048612B (en) | 2015-05-21 | 2015-05-21 | A kind of bidirectional electric automobile transmission intelligent charging spot |
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| CN105048612B true CN105048612B (en) | 2018-08-31 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105553057B (en) * | 2015-12-22 | 2018-06-12 | 华中科技大学 | A kind of electric automobile charging station control system based on electric network protection |
| CN110119848B (en) * | 2019-05-15 | 2022-11-11 | 长沙理工大学 | Chain communication electric vehicle group sharing decision frequency modulation trading method and system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201752077U (en) * | 2010-06-10 | 2011-02-23 | 上海市电力公司 | Automatic charging device based on V2G |
| CN102934319A (en) * | 2010-04-06 | 2013-02-13 | 巴特尔纪念研究院 | Grid regulation services for energy storage devices based on grid frequency |
| CN103915869A (en) * | 2014-03-10 | 2014-07-09 | 贾英昊 | Electric car intelligent charging system and method on basis of mobile device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201584794U (en) * | 2009-11-27 | 2010-09-15 | 福群电子(深圳)有限公司 | Charging circuit |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102934319A (en) * | 2010-04-06 | 2013-02-13 | 巴特尔纪念研究院 | Grid regulation services for energy storage devices based on grid frequency |
| CN201752077U (en) * | 2010-06-10 | 2011-02-23 | 上海市电力公司 | Automatic charging device based on V2G |
| CN103915869A (en) * | 2014-03-10 | 2014-07-09 | 贾英昊 | Electric car intelligent charging system and method on basis of mobile device |
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Effective date of registration: 20210209 Address after: Room 626, 6 / F, entrepreneurship center, Hunan environmental protection science and Technology Industrial Park, 199 Zhenhua Road, Yuhua District, Changsha City, Hunan Province, 410000 Patentee after: Xiangneng Chutian Power Technology Co.,Ltd. Address before: Wanjiali road 410114 in Hunan province Changsha Yuhua District, 2 No. 960 Patentee before: CHANGSHA University OF SCIENCE AND TECHNOLOGY |
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Denomination of invention: Bidirectional transmission intelligent charging pile for electric vehicle Effective date of registration: 20211012 Granted publication date: 20180831 Pledgee: China Everbright Bank Co.,Ltd. Changsha Renmin Road sub branch Pledgor: Xiangneng Chutian Power Technology Co.,Ltd. Registration number: Y2021980010622 |
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Denomination of invention: An intelligent charging pile for two-way transmission of electric vehicles Effective date of registration: 20221111 Granted publication date: 20180831 Pledgee: China Everbright Bank Co.,Ltd. Changsha Renmin Road sub branch Pledgor: Xiangneng Chutian Power Technology Co.,Ltd. Registration number: Y2022430000101 |
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Denomination of invention: A bidirectional transmission intelligent charging station for electric vehicles Granted publication date: 20180831 Pledgee: China Everbright Bank Co.,Ltd. Changsha Renmin Road sub branch Pledgor: Xiangneng Chutian Power Technology Co.,Ltd. Registration number: Y2024980007806 |