CN105871012B - The two-way charging module of V2G direct current - Google Patents
The two-way charging module of V2G direct current Download PDFInfo
- Publication number
- CN105871012B CN105871012B CN201610283128.2A CN201610283128A CN105871012B CN 105871012 B CN105871012 B CN 105871012B CN 201610283128 A CN201610283128 A CN 201610283128A CN 105871012 B CN105871012 B CN 105871012B
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- Prior art keywords
- power switch
- circuit
- execution circuit
- batteries
- capacitor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
-
- 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
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The present invention relates to a kind of two-way charging module of V2G direct current, including control system and execution circuit, the control system and execution circuit communication connection, the execution circuit both ends are separately connected DC bus and batteries of electric automobile.The execution circuit includes the bridge arm unit being composed in series by the first, second power switch pipe unit, and the both ends of the bridge arm unit are in series with the first, second capacitor forming circuit respectively, are parallel with inductance between the first, second power switch pipe unit.The first, second power switch pipe unit includes IGBT pipe and the diode in parallel with the IGBT pipe.Charging module structure of the invention is simple, control is flexible, the BUCK/BOOST conversion of circuit is realized by the state of the power switch tube in control system, electric current is set to complete circulation under DC state, it realizes current DC boosting or DC decompression, provides simple and effective solution to solve the energy flow between electric car and power grid.
Description
Technical field
The present invention relates to a kind of two-way charging modules of V2G direct current, are suitable for charge and discharge device outside electric car.
Background technique
Current air pollution and haze at we live in an inevitable significant problem, and 2015 one
It being shown in item investigation, the main influence of Beijing haze pollution is the discharge from vehicle exhaust, and at the same time, petroleum is natural
Gas has become keeping in check for China or even development of world economy as short-term non-regeneration energy, for their dependence, with
Air pollution grow in intensity, the rapid development of electric car has become economy and the very urgent demand of environment.
V2G technology refers to the control technology of two-way flow between electric vehicle and power grid.Using V2G technology electric car not
Only electric energy can be absorbed from power grid, energy support can also be provided if necessary to power grid by waiting.Although V2G technology it is early, it has been proposed that
But also lack the charging equipment for being specially adapted for energy in bidirectional flow between electric car and power grid.
Summary of the invention
In order to overcome the drawbacks described above under the prior art, the purpose of the present invention is to provide a kind of two-way chargings of V2G direct current
Module solves deficiency pointed in background technique, can satisfy using charging module of the invention electric under DC state
Energy in bidirectional flow between electrical automobile and power grid.
The technical scheme is that
A kind of two-way charging module of V2G direct current, including control system and execution circuit, the control system and execution circuit
Communication connection, the execution circuit both ends are separately connected charging unit and batteries of electric automobile, and the charging unit and direct current are female
Line is connected, and is equipped with information collecting device in the charging unit and batteries of electric automobile, the information collecting device with it is described
Control system communication connection, the control system receive the signal that the information collecting device is sent and generate control letter after processing
Number control execution circuit is acted accordingly, and realization direct current energy is between the DC bus and batteries of electric automobile
Two-way conveying.
Preferably, the execution circuit includes the bridge arm unit being composed in series by the first, second power switch pipe unit, institute
State bridge arm unit both ends be in series with respectively the first, second capacitor forming circuit, the first, second power switch pipe unit it
Between be parallel with inductance, first, second capacitor is arranged in parallel respectively in the charging unit and batteries of electric automobile side.
Preferably, the first power switch pipe unit include the first power switch tube and with first power switch tube
The first diode of reverse parallel connection, the second power switch pipe unit include the second power switch tube and with second power
Second diode of switching tube reverse parallel connection.
Preferably, first, second power switch tube is IGBT pipe, and first, second diode is Xiao Te
Based diode.
Preferably, the control system is equipped with control chip, and the control chip is dsp chip.
Preferably, PWM drive circuit, the PWM drive circuit are equipped between the control system and the execution circuit
The working condition of the execution circuit will be controlled after the control signal amplification.
Preferably, the inductance and the first, second power switch pipe unit collectively form the tune of the execution circuit
Unit is saved, the execution circuit is converted by BUCK or BOOST according to the charging and discharging state of the first capacitor and the second capacitor
Circuit.
Preferably, when the information collecting device detects the charging signals of batteries of electric automobile, the first capacitor is put
Electric, described second capacitor charging, second power switch tube are normally closed, and the execution circuit is BUCK circuit.
Preferably, when the information collecting device detects the discharge signal of batteries of electric automobile, the first capacitor is filled
Electric, the described second capacitor electric discharge, first power switch tube are normally closed, and the execution circuit is BOOST circuit.
Preferably, the batteries of electric automobile carries out charge and discharge according to the peak load of the DC bus, obtains price difference
Profit, when the power load of the DC bus is low, the batteries of electric automobile charges, and the execution circuit is BUCK
Circuit, when the power load of the DC bus is high, the batteries of electric automobile discharges, and the execution circuit is
BOOST circuit.
Further, the price difference profit is the difference of the energy storage cost of power grid Spot Price and batteries of electric automobile, institute
The energy storage cost for stating batteries of electric automobile calculates in the following manner: calculating acceptable peak clipping capacity C V: CV of electric car first
=[TES × DOD)-(RB/EFF)]/DH, then calculate the energy storage cost STC:STC of the every kilowatt hour of user vehicle=[BRC/ (DOD ×
CL)]+EC finally obtains energy storage totle drilling cost TMC:TMC=STC × [CV × DH × DM] of user vehicle, wherein CV is peak clipping appearance
Amount, KW；TES is that electric car always stores electricity, KWh；DOD is to allow depth of discharge, %；RB is operating range, km；EFF is electricity
Electrical automobile efficiency, km/KWh；DH is discharge time, h；STC is the energy storage cost , $/KWh of user vehicle；BRC is battery cost,
¥/KWh；CL is battery cycle life, h；EC is the cost , $/KWh recharged；TMS is the total energy storage cost of user vehicle, $；DM
For discharge time.
It is calculated according to above-mentioned energy storage totle drilling cost (totle drilling cost of peak clipping feed) and the total income for providing corresponding peak clipping electricity
Peak clipping income (total income subtracts totle drilling cost) determines the maximum peak clipping electricity that electric vehicle is capable of providing according to actual use demand,
In the range of the maximum peak clipping electricity actually allowed, corresponding peak clipping electricity when peak clipping income is calculated, electric vehicle is achieved in
The maximum economic interests of body, while being conducive to the stable operation of bulk power grid.
Preferably, the control system and remote server communication connection.
The invention has the benefit that
Charging module structure of the invention is simple, and control is flexibly, real by the state of the power switch tube in control system
The BUCK/BOOST conversion of existing circuit, makes electric current complete circulation under DC state, realizes current DC boosting or DC decompression,
Simple and effective solution is provided to solve the energy flow between electric car and power grid.The present invention greatly facilitates
Using the development of the electric car of V2G technology, the discharge of carbon dioxide and the dependence to petroleum are advantageously reduced, using V2G skill
The electric car of art can also become a kind of mobile energy storage device, through electric car in electricity consumption trough period charging, wave crest
Section balances power grid peak load, improves the service efficiency of electric energy to power grid sale of electricity, makes power grid and for electric vehicle is received per family
Benefit.
Detailed description of the invention
Fig. 1 is structure diagram of the invention；
Fig. 2 is the circuit structure schematic diagram of execution circuit of the present invention；
Fig. 3 is the circuit structure schematic diagram of BUCK circuit of the present invention；
Fig. 4 is the circuit structure schematic diagram of BOOST circuit of the present invention.
Specific embodiment
Referring to Fig. 1, the invention discloses a kind of two-way charging module of V2G direct current, including control system and execution circuit, institutes
Control system and execution circuit communication connection are stated, the execution circuit both ends are separately connected charging unit and batteries of electric automobile,
The charging unit is connected with DC bus, and information collecting device, institute are equipped in the charging unit and batteries of electric automobile
Information collecting device and the control system communication connection are stated, the control system receives the letter that the information collecting device is sent
Control signal is generated number after processing control the execution circuit and acted accordingly, realize DC current in the direct current mother
Two-way flow between line and batteries of electric automobile.
As shown in Fig. 2, the execution circuit includes the bridge arm list being composed in series by the first, second power switch pipe unit
Member, the both ends of the bridge arm unit are in series with first, second capacitor C1, C2 forming circuit respectively, and first, second power is opened
It closes and is parallel with inductance L1 between pipe unit, first, second capacitor is arranged in parallel respectively in the charging unit and electronic vapour
Vehicle battery side.
The first power switch pipe unit includes the first power switch tube and reversed with the first power switch tube V1
First diode in parallel, the second power switch pipe unit include the second power switch tube and with second power switch
Second diode of pipe V2 reverse parallel connection.
First, second power switch tube is IGBT pipe, and first, second diode is two pole of Schottky
Pipe.
The control system is equipped with control chip, and the control chip is dsp chip.
PWM drive circuit is equipped between the control system and the execution circuit, the PWM drive circuit is by the control
The working condition of the execution circuit is controlled after signal amplification processed.
The inductance and the first, second power switch pipe unit collectively form the adjusting unit of circuit, according to described
The execution circuit is converted into BUCK or BOOST circuit by the charging and discharging state of first capacitor and the second capacitor.
When the information collecting device detects the charging signals of batteries of electric automobile, the first capacitor discharges, is described
Second capacitor charging, second power switch tube are normally closed, and the execution circuit is BUCK circuit.Equivalent circuit diagram at this time is such as
Shown in Fig. 3, first capacitor is equivalent to power supply, the first power switch tube is normally opened and closed, the second power switch pipe unit is equivalent to instead
To diode.After the conducting of first power switch, first capacitor, the first power switch and inductance constitute circuit；When the first power is opened
After shutdown is opened, inductance, the second capacitor and the second diode constitute circuit, and inductance is that electric current is prevented to decline, and keep the side of primary current
To continuing to flow, decompression is realized using the reversed afterflow of diode, and the second capacitor is used for pressure stabilizing at this time, obtains stable low electricity
Pressure.
When the information collecting device detects the discharge signal of batteries of electric automobile, the first capacitor charges, is described
The electric discharge of second capacitor, first power switch tube are normally closed, and the execution circuit is BOOST circuit.Equivalent circuit diagram at this time
As shown in figure 4, the second capacitor equivalent be power supply, the second power switch tube it is normally opened close, the first power switch pipe unit is equivalent to instead
To diode.After the conducting of second power switch, the second capacitor is simultaneously first capacitor and induction charging；When the second power switch is disconnected
After opening, inductance, first capacitor and first diode constitute circuit, and due to the presence of first diode, inductance keeps primary current
Direction continues as first capacitor charging, and the second capacitor is used for pressure stabilizing, obtains stable high voltage.
The control system and remote server communication connection, can be communicated in real time with remote server, will be charged
The information such as state, charging used time, charge volume are uploaded to remote server, while receiving the control signal of server, work as micro-capacitance sensor
When interior load is excessive, power supply system power supply is gone wrong or the electricity of energy-storage system storage cannot be met the requirements, server to
Control system sends signal and controls the batteries of electric automobile to DC bus electric discharge, alleviates power grid Voltage force.
The batteries of electric automobile carries out charge and discharge according to the peak load of the DC bus, balances the peak valley of micro-capacitance sensor
Gap maintains the stabilization of micro-capacitance sensor, and automobile user is made to obtain price difference profit.When the power load of the DC bus is low
When, the batteries of electric automobile charges, and the execution circuit is BUCK circuit, when the power load of the DC bus is high
When, the batteries of electric automobile discharges, and the execution circuit is BOOST circuit.
The price difference profit is the difference of the energy storage cost of power grid Spot Price and batteries of electric automobile, the electric car
The energy storage cost of battery calculates in the following manner: first calculating electric car acceptable peak clipping capacity C V: CV=[TES ×
DOD)-(RB/EFF)]/DH, then energy storage cost STC:STC=[BRC/ (DOD × CL)]+EC of the every kilowatt hour of user vehicle is calculated,
Finally obtain user vehicle energy storage cost TMC:TMC=STC × [CV × DH × DM].Wherein: CV is peak clipping capacity, KW；TES is
Electric car always stores electricity, KWh；DOD is to allow depth of discharge, %；RB is operating range, km；EFF is electric car efficiency,
km/KWh；DH is discharge time, h；STC is the energy storage cost , $/KWh of user vehicle；BRC is battery cost , $/KWh；CL is
Battery cycle life, h；EC is the cost , $/KWh recharged；TMS is the total energy storage cost of user vehicle, $；DM is discharge time.
The present invention facilitates the development of the electric car using V2G technology, realizes electricity using charging module of the invention
The two-way flow of electric energy between electrical automobile and power grid.Electric car can as mobile energy storage device, when network load is excessively high,
It is fed from electric car energy storage source to power grid and alleviates power grid pressure;And when network load is low, power grid is stored with electric car
Superfluous generated energy, avoids wasting, achievees the purpose that " peak load shifting ".In this way, automobile user can be with
Electricity is bought from power grid when electricity price is low, to power grid sale of electricity when power grid electricity price is high, to obtain certain income.
The present invention is conducive to the unification of batteries of electric automobile charge and discharge, the charge and discharge plan of unified plan charging electric automobile batteries
Slightly, " charging in the electricity consumption trough period, electricity consumption wave crest period sale of electricity " this efficient charge and discharge strategy is utilized, is made for electric vehicle
Family, power grid enterprises and Automobile Enterprises Sharing Interests.For automobile user, mended using the peak valley price difference of electric energy
Patch reduces the use cost of displacement electric car;For grid company, electric car can be used as removable energy storage device and
Peak regulation system, the charging when power supply is had more than needed improve the utilization efficiency of electric power, discharge in shortage of electric power, and voltage is used in alleviation
Power delays power grid construction to invest, and improves operation of power networks efficiency and reliability;For Automobile Enterprises, the utilization of V2G technology
The use cost of electric car can be made to be effectively reduced, reduce the burden of automobile user, be conducive to push the big of electric car
Power development, Automobile Enterprises will also welcome new development opportunity.
It is disclosed by the invention it is each preferably with optional technological means, unless otherwise indicated and one preferably or can selecting technology hand
Section is that further limiting for another technological means is outer, can form several different technical solutions in any combination.
Claims (5)
1. a kind of two-way charging module of V2G direct current, it is characterised in that including control system and execution circuit, the control system with
Execution circuit communication connection, the execution circuit both ends are separately connected charging unit and batteries of electric automobile, the charging unit
It is connected with DC bus, information collecting device, the information collection dress is equipped in the charging unit and batteries of electric automobile
It sets and receives the signal that the information collecting device is sent with the control system communication connection, the control system and give birth to after processing
The execution circuit is controlled at control signal to be acted accordingly, realizes direct current energy in the DC bus and electric car
Two-way conveying between battery, the execution circuit include the bridge arm list being composed in series by the first, second power switch pipe unit
Member, the both ends of the bridge arm unit are in series with the first, second capacitor forming circuit, first, second power switch tube respectively
Inductance is parallel between unit, first, second capacitor is arranged in parallel respectively in the charging unit and batteries of electric automobile
Side, the inductance and the first, second power switch pipe unit collectively form the adjusting unit of the execution circuit, according to institute
The execution circuit is converted into BUCK or BOOST circuit, the information by the charging and discharging state for stating first capacitor and the second capacitor
It is the first capacitor electric discharge, second capacitor charging, described when acquisition device detects the charging signals of batteries of electric automobile
Second power switch tube is normally closed, and the execution circuit is BUCK circuit, and the batteries of electric automobile is according to the DC bus
Peak load carries out charge and discharge, obtains price difference profit, when the power load of the DC bus is low, the batteries of electric automobile
It charging, the execution circuit is BUCK circuit, when the power load of the DC bus is high, the batteries of electric automobile
It discharges, the execution circuit is BOOST circuit, and the price difference profit is the storage of power grid Spot Price and batteries of electric automobile
The difference of energy cost, the energy storage cost of the batteries of electric automobile calculate in the following manner: calculating electric car first is acceptable
Peak clipping capacity C V: CV=[TES × DOD)-(RB/EFF)]/DH, then calculate the energy storage cost STC of the every kilowatt hour of user vehicle:
STC=[BRC/ (DOD × CL)]+EC, finally obtains user vehicle energy storage cost TMC:TMC=STC × [CV × DH × DM],
In, CV is peak clipping capacity, KW；TES is that electric car always stores electricity, KWh；DOD is to allow depth of discharge, %；RB be traveling away from
From km；EFF is electric car efficiency, km/KWh；DH is discharge time, h；STC is the energy storage cost , $/KWh of user vehicle；
BRC is battery cost , $/KWh；CL is battery cycle life, h；EC is the cost , $/KWh recharged；DM is discharge time.
2. the two-way charging module of V2G direct current as described in claim 1, it is characterised in that the first power switch pipe unit packet
Include the first power switch tube and the first diode with the first power switch tube reverse parallel connection, second power switch tube
Unit includes the second power switch tube and the second diode with the second power switch tube reverse parallel connection, and described first,
Two power switch tubes are IGBT pipe, and first, second diode is Schottky diode.
3. the two-way charging module of V2G direct current as claimed in claim 2, it is characterised in that the control system is equipped with control core
Piece, the control chip are dsp chip.
4. the two-way charging module of V2G direct current as claimed in claim 3, it is characterised in that the control system executes electricity with described
PWM drive circuit is equipped between road, the PWM drive circuit controls the work of the execution circuit after amplifying the control signal
Make state.
5. the two-way charging module of V2G direct current as claimed in claim 4, it is characterised in that the information collecting device detects electricity
When the discharge signal of electrical automobile battery, the first capacitor charging, second capacitor electric discharge, first power switch tube are normal
It closes, the execution circuit is BOOST circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610283128.2A CN105871012B (en) | 2016-05-03 | 2016-05-03 | The two-way charging module of V2G direct current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610283128.2A CN105871012B (en) | 2016-05-03 | 2016-05-03 | The two-way charging module of V2G direct current |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105871012A CN105871012A (en) | 2016-08-17 |
| CN105871012B true CN105871012B (en) | 2018-12-07 |
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ID=56629865
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610283128.2A Expired - Fee Related CN105871012B (en) | 2016-05-03 | 2016-05-03 | The two-way charging module of V2G direct current |
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| CN (1) | CN105871012B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7056581B2 (en) * | 2016-12-21 | 2022-04-19 | ソニーグループ株式会社 | Power circuit and electric vehicle |
| CN106740221B (en) * | 2017-01-06 | 2020-12-29 | 中国计量大学 | V2G wireless power bidirectional transmission device based on low-frequency PWM rectifier |
| CN110535157B (en) * | 2018-05-24 | 2021-12-07 | 三菱电机(中国)有限公司 | Discharge control device and discharge control method for electric vehicle |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102163856A (en) * | 2011-03-01 | 2011-08-24 | 东南大学 | Vehicle-to-grid (V2G)-technology-based vehicle-mounted charging and discharging device and control method thereof |
| EP2684733A1 (en) * | 2012-07-11 | 2014-01-15 | Enzo Michele Illiano | Charging station for an electric vehicle and charging device therefor |
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2016
- 2016-05-03 CN CN201610283128.2A patent/CN105871012B/en not_active Expired - Fee Related
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Effective date of registration: 20190710 Address after: 100744 Beijing Haidian District, Zhongguancun, Yanqing Garden, Fenggu Road, No. 8 Courtyard, Building 2256 Patentee after: BEIJING BEIJING TRANSFORMER ENERGY CONTROL TECHNOLOGY Co.,Ltd. Address before: Room 231, Huaxia Science and Technology Building, Building 8, Zhongguancun Software Park, Shangdi, Haidian District, Beijing, 100193 Patentee before: BEIJING BEIBIAN MICRO GRID TECHNOLOGY CO.,LTD. |
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