CN106059024A - Large-power rapid charging converter for family electric car - Google Patents
Large-power rapid charging converter for family electric car Download PDFInfo
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- CN106059024A CN106059024A CN201610587438.3A CN201610587438A CN106059024A CN 106059024 A CN106059024 A CN 106059024A CN 201610587438 A CN201610587438 A CN 201610587438A CN 106059024 A CN106059024 A CN 106059024A
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- 230000005611 electricity Effects 0.000 claims description 15
- 230000002093 peripheral effect Effects 0.000 claims description 12
- 239000013307 optical fiber Substances 0.000 claims description 9
- 230000006837 decompression Effects 0.000 claims description 6
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Classifications
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- H02J7/022—
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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
- B60L53/10—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 characterised by the energy transfer between the charging station and the vehicle
- B60L53/11—DC charging controlled by the charging station, e.g. mode 4
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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
- B60L53/20—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 characterised by converters located in the vehicle
-
- 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
- B60L53/20—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 characterised by converters located in the vehicle
- B60L53/24—Using the vehicle's propulsion converter for charging
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- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal 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
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal 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
- H02M7/219—Conversion of ac power input into dc power output without possibility of reversal 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 in a bridge configuration
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
-
- 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
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
-
- 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
- Y02T90/14—Plug-in electric vehicles
Abstract
The present invention provides a large-power rapid charging converter for a family electric car. The convertor comprises a bidirectional conversion module, a single phase alternating current power grid interface, an energy storage battery interface, an electric car charging interface and a convertor controller. The bidirectional conversion module includes an AC/DC conversion module and a DC/DC conversion module which are provided with an energy storage battery interface therebetween; the single phase alternating current power grid interface is arranged at the input end of the AC/DC conversion module; the electric car interface is arranged at the output end of the DC/DC conversion module; and the convertor controller employs a sampling line and a control line to connect with the AC/DC conversion module and the DC/DC conversion module. The energy storage battery interface and a gradient battery pack are configured in a charging convertor, and the rapid charging function of the energy storage battery is employed to satisfy the requirement of the large-power charging of the electric car so as to greatly shorten the charging time of the electric car, and the energy storage battery set also can be taken as the emergency stand-by power supply of family users.
Description
Technical field
The present invention relates to electric automobile energy storage and quick charge field, a kind of big merit of household electric automobile
Rate quick charge current transformer.
Background technology
Electric vehicle rapid charging is the key of electric automobile large-scale development, so far, and China's charging electric vehicle
Stand and be mostly confined to Electric Transit automobile or in-group car, the most do not build up really towards the charging station service of different user
Network.The charging of residential quarter electric automobile is limited by net capacity, and user only allows installation to exchange charging pile at a slow speed, no
The most of old community meeting installation charging pile can only use domestic air conditioning socket to be charged, and charging is difficult, charging becomes slowly
Restriction electric automobile fast development and the key issue of effective use.
In prior art, Electric Vehicle's Alternating charging pile at a slow speed uses AC/DC single stage shift structure, and charge power is generally
6.6kW, uses air conditioner socket charge power to be only up to 3.3kW, for capacity at the electric automobile of 60kWh to 80kWh, charges
For up to more than 10 to 20 hours, seriously constrain electric automobile popularization and service efficiency.
In order to solve electric vehicle rapid charging problem, the present invention devise a kind of be applicable to household electric automobile use
High-power quick charge converter system, the echelon energy storage battery system that the configuration of this system is consistent with batteries of electric automobile capacity,
By energy-storage battery quick discharge function, meet electric automobile high-power quick charge demand.
Summary of the invention
For meeting the needs of prior art, the present invention provides a kind of high-power quick charge unsteady flow of household electric automobile
Device.
The household electric automobile that the present invention provides is with high-power quick charge current transformer, and it thes improvement is that, described in fill
Electric converter includes Bidirectional variable-flow module, single phase ac grid interface, energy-storage battery interface, electric vehicle charge interface and unsteady flow
Device controller；
Described Bidirectional variable-flow module includes AC/DC unsteady flow module and the DC/DC being arranged between described energy-storage battery interface
Unsteady flow module；
Described single phase ac grid interface is arranged at AC/DC unsteady flow module input；
Described electric automobile interface is arranged at DC/DC unsteady flow module outfan；
Described inverter controller by sampling line and control line respectively with described AC/DC unsteady flow module and described DC/DC
Unsteady flow module connects.
Further, described AC/DC unsteady flow module is to use the single-phase bridge IGBT of PEBB structure；
Described AC/DC unsteady flow modular peripheral circuit includes exchanging LC wave filter and DC voltage-stabilizing electric capacity；
Described DC/DC unsteady flow module is to use the three-phase bridge IGBT of PEBB structure；
Described DC/DC unsteady flow modular peripheral circuit includes LC wave filter.
Further, described IGBT module includes IGBT main circuit, drive circuit, protection circuit, sensor, buffer circuit
With capacitive absorption circuit.
Further, described inverter controller by DSP master controller, FPGA pilot controller, connect DSP and FPGA
Peripheral circuit and upper computer control module composition.
Described DSP master controller is connected with data/address bus by address bus with FPGA pilot controller；
Described peripheral circuit includes that voltage x current sample circuit, optical fiber changeover circuit, power tube drive circuit, power tube are protected
Protection circuit, telecommunication circuit；
Described upper computer control module connects DSP master controller by telecommunication circuit.
Further, the control flow of described inverter controller is:
(1) voltage x current sample circuit is measured the voltage and current signal of described unsteady flow module and sends it to DSP；
(2) power valve protective circuit gathers overcurrent protection and the overheat protector signal sending it to of unsteady flow module output
FPGA；
(3) FPGA is exported by optical fiber changeover circuit PWM drives the signal of telecommunication to be converted to optical signal, and is sent to power tube and drives
Galvanic electricity road；
(4) power tube drive circuit converts optical signals to the signal of telecommunication amplifying power；
(5) telecommunication circuit realizes the two-way communication of DSP and upper computer control module.
Further, described inverter controller monitors and receives that host computer issues includes charging at a slow speed, quickly in real time
Charging and the control command do not charged and control parameter.
Further, the charge condition of described current transformer includes:
(1) receiving charge command at a slow speed, electric automobile obtains electric energy from domestic electric network: described AC/DC unsteady flow module is with whole
Stream mode runs, and electrical network alternating current is become unidirectional current；Described DC/DC module is run with decompression mode, by electrical network dc bus
Voltage is down to charging electric vehicle voltage.
(2) receive quick charge order, and when battery electric quantity is more than 20%, then DC/DC unsteady flow module is transported with decompression mode
OK, energy-storage battery quick charge is provided to electric automobile.
(3) without charge command, and when battery electric quantity is less than 80%, then AC/DC unsteady flow module presses rectification mode work, by electricity
Net is that energy-storage battery supplements energy.With immediate prior art ratio, the technical scheme that the present invention provides has following excellent effect
Really:
1, the technical scheme that the present invention provides is little for domestic supply network capacity, power exceedes certain threshold value and can cause
The situation of tripping operation, it is provided that electric vehicle rapid charging current transformer meets the high-power quick charge demand of electric automobile, not only solves
The problem that electric vehicle rapid charging of having determined is difficult, and when grid power blackout or power shortage, as the energy storage of energy storage units
Battery can provide family urgent electricity consumption；
2, the technical scheme that the present invention provides extends energy-storage battery interface in quick charge current transformer dc bus side, and
Configuration echelon set of cells, cost-effective, simultaneously so that a large amount of retired battery remaining life-spans are rationally extended, and alleviate retired
Battery disassemble the immense pressure that environment is caused, environmental benefit is notable；
3, in technical scheme, AC/DC unsteady flow module and DC/DC unsteady flow module all use PEBB structure to design, and one
Aspect is easy to system maintenance and upgrading, on the other hand improves charging system functional reliability；
4, technical scheme is according to the circuit model parameters of charging electric motor vehicles stake and power used for electric vehicle
The load characteristic of battery, devises corresponding digital sample, filtering algorithm and Digital PID Controller, and system has higher tune
Joint precision and response speed, can meet the complicated charging requirement of different dynamic battery.
5, technical scheme is by the contracting of more than the 10 to 20 of Electric Vehicle's Alternating charging pile at a slow speed hours charging intervals
In the range of being short to more than 5 hour, substantially reduce the charging interval of electric automobile, promote the popularization of household electric automobile, carry
The high service efficiency of electric automobile.
Accompanying drawing explanation
The structured flowchart of the quick charge current transformer that Fig. 1 provides for the present invention；
The main topological diagram of the quick charge current transformer that Fig. 2 provides for the present invention；
The control process schematic of the control system of the quick charge current transformer that Fig. 3 provides for the present invention；
The control flow chart of the quick charge current transformer that Fig. 4 provides for the present invention.
Detailed description of the invention
For clearly introducing the high-power quick charge current transformer that the present invention provides, below with reference to Figure of description to this
The specific embodiment of invention is described.
Domestic supply network capacity is little, and power exceedes certain threshold value can cause tripping operation, and the present invention opens up at charging converter
Flutter middle configuration energy-storage battery interface and be equipped with echelon set of cells, utilizing the quick discharge function of energy-storage battery to meet electric automobile
High-power charge requirement, additionally energy-storage battery group is also used as the emergency power supply of domestic consumer.The present invention not only solves
The quick charge problem of domestic consumer's electric automobile, and can ensure that the electricity consumption reliability of domestic consumer.
Structure chart as shown in Figure 1, the electric household automobile of the present invention fills current transformer soon and includes two way convertor module, list
Cross streams grid interface, energy-storage battery interface, electric vehicle charge interface and inverter controller, wherein control system based on
DSP and FPGA structure are built, it is achieved to AC/DC unsteady flow module and the sampling of DC/DC unsteady flow module and control；AC/DC unsteady flow mould
The input of block is connected with grid interface, and the outfan of DC/DC unsteady flow module is connected with electric vehicle charge interface, energy-storage battery
Interface is arranged between AC/DC unsteady flow module and DC/DC unsteady flow module.In electrical network peak of power consumption period, energy-storage battery group is passed through
DC/DC unsteady flow module provides electric vehicle rapid charging function；In grid power blackout period, energy-storage battery group passes through AC/DC module
There is provided family urgent electricity consumption；In electrical network low power consumption period, grid interface is charged to energy-storage battery by AC/DC module, additionally
Grid interface can also provide electric automobile charge function at a slow speed by AC/DC Yu DC/DC two-stage unsteady flow module.
The present invention propose electric vehicle rapid charging current transformer basic structure as in figure 2 it is shown, quick charge current transformer by
Grid interface, AC/DC unsteady flow module, energy storage battery system interface, DC/DC unsteady flow module and electric vehicle charge interface composition.
AC/DC unsteady flow module and DC/DC unsteady flow module all use PEBB structure to design, and wherein AC/DC module uses single-phase bridge IGBT
Realizing, DC/DC module uses three-phase bridge IGBT to realize.IGBT module is current transformer power conversion main carriers, mainly includes
The parts such as IGBT main circuit, drive circuit, protection circuit, operative sensor, buffer circuit, capacitive absorption circuit.
Wherein grid interface is Domestic single-phase alternating current input/output port, voltage 220V, maximum input and output electric current 32A；
AC/DC unsteady flow module combines its peripheral exchange LC filter circuit and DC voltage-stabilizing electric capacity realizes electrical network AC energy and energy-storage battery
The bi-directional conversion function of direct current energy: electrical network is when energy-storage battery charges, and AC/DC unsteady flow module is operated in rectification mode: energy storage
Battery is when electrical network feedback electric energy, and AC/DC unsteady flow module is operated in inverter mode.
Energy storage battery system interface is arranged at the dc bus of AC/DC unsteady flow module and DC/DC unsteady flow intermodule, bus
Voltage is 600V-800V, and the echelon set of cells of system configuration connects so far interface, as electrical network electric energy and electric car electric energy
Terminal.When electric automobile needs quick charge, set of cells passes through DC/DC unsteady flow module to electric automobile repid discharge；When
When electric automobile need not charging and network load paddy phase, set of cells carries out energy supply by AC/DC unsteady flow module；Work as electrical network
During power failure, set of cells passes through AC/DC unsteady flow module to electrical network feedback electric energy, it is provided that the urgent electricity consumption of family.DC/DC unsteady flow module is tied
Close its peripheral LC filter circuit and realize the buck translation function of dc bus direct current energy and electric automobile direct current energy: battery
Group, when charging electric vehicle, determines the boosting of DC/DC unsteady flow module or blood pressure lowering according to the electric pressure of electric automobile power battery
Mode of operation；Electric vehicle charge interface is arranged in the outlet side of DC/DC unsteady flow module, mates electric automobile DC charging standard
Interface, peak power output 50kW.
Electric vehicle rapid charging inverter controller structure as it is shown on figure 3, this control system include DSP master controller,
FPGA pilot controller, the peripheral circuit being connected with DSP and FPGA and upper computer control module.Wherein DSP master controller master
The charge and discharge control algorithm of system to be used for realizes, and FPGA pilot controller is mainly used in the on-off control of system, drives signal
Processing, protect the ancillary control functions such as signal processing, two controllers are connected with data/address bus by address bus, it is achieved number
According to high-speed transfer, strengthen and control synchronicity.
The peripheral circuit being connected with DSP and FPGA includes that voltage x current sample circuit, optical fiber changeover circuit, power tube drive
Circuit, power valve protective circuit, telecommunication circuit etc..Voltage x current sample circuit measures AC/DC unsteady flow module and DC/DC unsteady flow mould
Block voltage and current signal is also delivered to DSP and is carried out sampling processing；The PWM that FPGA is exported by optical fiber changeover circuit drives signal of telecommunication conversion
For optical signal, and transmit signals to power tube drive circuit through optical fiber；The PWM received is driven by power tube drive circuit
Optical signal is converted to the signal of telecommunication and carries out power amplification, and the final energy driving AC/DC unsteady flow module and DC/DC unsteady flow module turns
Change；Power valve protective circuit gathers AC/DC unsteady flow module and the overcurrent protection signal of DC/DC unsteady flow module output and overheat protector
Signal also transmits to FPGA through optical fibre channel；Telecommunication circuit realizes the bi-directional communication function of DSP and upper computer control module.
Discharge and recharge instruction that DSP real-time reception host computer issues and operational factor, and sampling feedback value is referred to host computer
Make value compare, by PI computing, result is delivered to task manager (EV), change PWM drive signal output duty cycle.Wherein
The pwm signal of AC/DC unsteady flow module disappears to tremble through FPGA and is directly output to optical fiber changeover circuit and power tube driving after deburring
Circuit, control IGBT cut-offs action；The pwm signal of DC/DC unsteady flow module is through FPGA phase shift rear drive IGBT action.This patent
4 road PWM drive signal of AC/DC unsteady flow module are produced by task manager A, 6 road PWM drive signal of DC/DC unsteady flow module
Produced by task manager B.Meanwhile, FPGA real-time acquisition system duty, control converter switches action, additionally work as IGBT
When module produced stream or overheat protector signal, first protection signal delivers to FPGA, produces a low level after FPGA processes
Signal triggers master controller PDP to interrupt, and locking PWM exports, the operation safety of protection IGBT module.
Electric vehicle rapid charging current transformer control flow as shown in Figure 4, monitor in real time and receive by inverter controller
The position control command that issues of machine and parameter, control command includes charging at a slow speed, quick charge and not charging, and controls parameter and includes filling
Piezoelectric voltage, charging current, charging interval etc..
1) receiving at a slow speed after charge command when controller, electric automobile obtains electric energy, AC/DC unsteady flow mould from domestic electric network
Block runs with rectification mode, and electrical network alternating current is changed into unidirectional current, and DC/DC unsteady flow module is run with decompression mode, by direct current
Busbar voltage is down to charging electric vehicle voltage and is provided charge function at a slow speed；
2) after controller receives quick charge order, energy-storage battery electricity is first determined whether: if battery electric quantity is less than
20%, then take charging modes at a slow speed；If battery electric quantity is more than 20%, then electric automobile obtains electric energy, AC/ from energy-storage battery
DC unsteady flow module is not run, and DC/DC unsteady flow module is run with decompression mode, by near for energy-storage battery voltage charging electric vehicle electricity
Pressure provides quick-charge function；During electric vehicle rapid charging, energy-storage battery electricity monitored in real time by controller, when energy storage electricity
Transfer charging modes at a slow speed to when pond electricity is less than 20%, effectively prevent energy-storage battery over-discharge and the shorter battery life that causes
Problem；
3) when controller is not connected to charge command, the electricity of energy-storage battery is first determined whether, if battery electric quantity is more than
80%, it is not the most its supplementary energy, AC/DC unsteady flow module and DC/DC unsteady flow module are not run；If battery electric quantity is less than
80%, DC/DC unsteady flow module is not run, and AC/DC module is operated in rectification mode, and electrical network AC energy is converted to direct current energy
Supplementing energy for energy-storage battery, when energy-storage battery electricity reaches 100%, AC/DC unsteady flow module is automatically stopped operation.
Above example is only in order to illustrate that technical scheme is not intended to limit, although with reference to above-described embodiment pair
The present invention has been described in detail, and the detailed description of the invention of the present invention still can be entered by those of ordinary skill in the field
Row amendment or equivalent, these are without departing from any amendment of spirit and scope of the invention or equivalent, all in application
Within the claims of the present invention awaited the reply.
Claims (7)
1. a household electric automobile is with high-power quick charge current transformer, it is characterised in that described charging converter includes double
To unsteady flow module, single phase ac grid interface, energy-storage battery interface, electric vehicle charge interface and inverter controller；Described
Bidirectional variable-flow module includes AC/DC unsteady flow module and the DC/DC unsteady flow module being arranged between described energy-storage battery interface；
Described single phase ac grid interface is arranged at AC/DC unsteady flow module input；
Described electric automobile interface is arranged at DC/DC unsteady flow module outfan；
Described inverter controller by sampling line and control line respectively with described AC/DC unsteady flow module and described DC/DC unsteady flow
Module connects.
2. quick charge current transformer as claimed in claim 1, it is characterised in that
Described AC/DC unsteady flow module is to use the single-phase bridge IGBT of PEBB structure；
The peripheral circuit of described AC/DC unsteady flow module includes exchanging LC wave filter and DC voltage-stabilizing electric capacity；
Described DC/DC unsteady flow module is to use the three-phase bridge IGBT of PEBB structure；
The peripheral circuit of described DC/DC unsteady flow module includes LC wave filter.
3. quick charge current transformer as claimed in claim 2, it is characterised in that described IGBT module include IGBT main circuit,
Drive circuit, protection circuit, sensor, buffer circuit and capacitive absorption circuit.
4. quick charge current transformer as claimed in claim 1, it is characterised in that described inverter controller is by DSP main control
Device, FPGA pilot controller, the peripheral circuit connecting DSP and FPGA and upper computer control module composition；
Described DSP master controller is connected with data/address bus by address bus with FPGA pilot controller；
Described peripheral circuit includes voltage x current sample circuit, optical fiber changeover circuit, power tube drive circuit, power tube protection electricity
Road, telecommunication circuit；
Described upper computer control module connects DSP master controller by telecommunication circuit.
5. quick charge current transformer as claimed in claim 1, it is characterised in that the control flow of described inverter controller
For:
(1) voltage x current sample circuit is measured the voltage and current signal of described unsteady flow module and sends it to DSP；
(2) power valve protective circuit gathers overcurrent protection and the overheat protector signal sending it to of unsteady flow module output
FPGA；
(3) PWM that FPGA is exported by optical fiber changeover circuit drives the signal of telecommunication to be converted to optical signal, and is sent to power tube driving electricity
Road；
(4) power tube drive circuit converts optical signals to the signal of telecommunication amplifying power；
(5) telecommunication circuit realizes the two-way communication of DSP and upper computer control module.
6. quick charge current transformer as claimed in claim 5, it is characterised in that described inverter controller is monitored in real time and connects
Receive host computer including of issuing charge at a slow speed, quick charge and the control command do not charged and control parameter.
7. quick charge current transformer as claimed in claim 6, it is characterised in that the charge condition of described current transformer includes:
(1) receiving charge command at a slow speed, electric automobile obtains electric energy from domestic electric network: described AC/DC unsteady flow module is with rectification mould
Formula is run, and electrical network alternating current is become unidirectional current；Described DC/DC module is run with decompression mode, by electrical network DC bus-bar voltage
It is down to charging electric vehicle voltage.
(2) receive quick charge order, and when battery electric quantity is more than 20%, then DC/DC unsteady flow module is run with decompression mode, by
Energy-storage battery provides quick charge to electric automobile.
(3) without charge command, and when battery electric quantity is less than 80%, then AC/DC unsteady flow module presses rectification mode work, electrical network be
Energy-storage battery supplements energy.
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| CN107415761A (en) * | 2017-09-02 | 2017-12-01 | 重庆佩特电气有限公司 | A kind of power model for Electric Transit quick charge stake |
| CN108032740A (en) * | 2017-10-24 | 2018-05-15 | 合肥成科电子科技有限公司 | A kind of energy storage type electric automobile charging pile system |
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Application publication date: 20161026 |