CN102826054B - Multi-functional integrated power electronic system of electric automobile - Google Patents
Multi-functional integrated power electronic system of electric automobile Download PDFInfo
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- CN102826054B CN102826054B CN201210288075.5A CN201210288075A CN102826054B CN 102826054 B CN102826054 B CN 102826054B CN 201210288075 A CN201210288075 A CN 201210288075A CN 102826054 B CN102826054 B CN 102826054B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Abstract
The invention provides a multi-functional integrated power electronic system of an electric automobile. The multi-functional integrated power electronic system comprises an energy storage device, a bidirectional transducer, a driving motor inverter, a power grid connector, a controller and a communication network, wherein the multi-functional integrated power electronic system simultaneously has functions of driving motor transduction, bidirectional buck-boost conversion and power grid connection intelligent charging; since a driving motor system of the electric automobile and a charging system of the energy storage device are not used at the same time, the two functions are combined together in hardware by the system; thus, the power electronic switchgear and the controller of the multi-functional integrated power electronic system can be subjected to time sharing multiplexing; and because of integrated arrangement, the size and the manufacturing cost of the entire system are greatly reduced and meanwhile the stability of the entire system is also improved.
Description
Technical field
The present invention relates to Power Electronic Technique, specifically a kind of power electronic system of the integrated multifunction for electronlmobil.
Background technology
Day by day serious along with energy shock and environmental crisis, new forms of energy receive people's concern day by day with the advantage of its energy-conserving and environment-protective.New-energy automobile becomes the trend of green traffic development.Due to traditional automotive field, domestic development is more late, and external large-scale Automobile Enterprises is in occupation of the advantage of not replacing.And new-energy automobile started development in recent years, every country and area be all in the starting stage, so new-energy automobile Ye Wei China automobile industry narrows the gap, promotes Competitiveness of Chinese Industries, realizes tulwar and overtake other vehicles rare historic opportunity is provided.At present, electronlmobil becomes the main flow of new-energy automobile.The development of electronlmobil depends on the development of the parts technology such as car load integrated technology and motor, battery.Along with the lifting of electronlmobil integrated level, the integral vehicle cost of electronlmobil is expected to greatly reduce.
Power system of electric automobile is being related to the source of electric powered motor, is one of gordian technique of electronlmobil.The important component part of power system of electric automobile is battery pack and drive motor inverter, and battery pack is for storage of electrical energy, and drive motor inverter is for the direct current (DC) of storage battery is transformed into alternating current, and drive motor moves.Battery pack is directly connected to the input end of drive motor inverter, and for it provides electric energy, therefore, the voltage of drive motor inverter is the voltage at storage battery two ends.In use, due to the characteristic of storage battery, the voltage at storage battery two ends can reduce along with the output of electric weight.And for drive motor inverter, unsteady working stability and the work efficiency that can affect whole drive motor system of its input voltage.In order to improve efficiency and the stability of drive system of electric automobile, reduce the loss of energy in transmission and conversion process, the input voltage of drive motor inverter should be consistent as far as possible and stablize.But for power accumulator, battery pack is to be formed by a plurality of battery cell connection in series-parallel, very high to the coherence request of battery cell, too much series-connected cell can reduce the reliability of storage battery power supply system, but battery arranges the very few continuous distance travelled that can affect again electronlmobil.In order to reduce the associated next problem of battery strings, the 250V-380V that adopt as the output voltage of battery more both at home and abroad.In electronlmobil inside, except the high tension battery group of above-mentioned drive motor operation, be also provided with the low tension battery into low-voltage equipment power supply in car, so high tension battery is also responsible for the task of charging for A-battery when needed.
A kind of multifunctional integrated charger with compensating charge for electronlmobil is disclosed in Chinese patent literature CN101499673B, comprise rectifier bridge, inversion charge circuit, control circuit, contactless switch group, electrokinetic cell and boosting battery and feedback braking energy measuring, electrokinetic cell energy measuring and boosting battery energy measuring circuit, the mouth of rectifier bridge is connected with inversion charge circuit.In this technical scheme, four kinds of charge function height such as compensating charge are integrated in a battery charger, improved the integrated level of battery charger.But, in this technical scheme, the input terminal voltage that still cannot solve high tension battery group spread of voltage and drive motor inverter need to keep constant problem, in addition, although the integrated function of battery charging in battery charger in this technical scheme, but need to arrange separately, not high with the integrated level of other equipment.
Summary of the invention
For this reason, the power system integrated level that a problem to be solved by this invention is electronlmobil of the prior art is not high, wasting space and electric elements, thus propose a kind ofly there is higher integrated level, save space, electric elements can time-sharing multiplex, improve the multi-functional integrated power electronic system of Occupation coefficient.
Another problem to be solved by this invention is that the input terminal voltage that cannot solve high tension battery group spread of voltage and drive motor inverter in prior art need to keep constant technical matters, thereby can keep the integrated power electronic system of the input terminal voltage stable and consistent of drive motor inverter.
For solving the problems of the technologies described above, the invention provides the multi-functional integrated power electronic system of a kind of electronlmobil, comprising:
Closed-center system, stores electric energy, to drive motor, powers;
Reversible transducer, is connected with described closed-center system, direct current (DC) is boosted or the bi-directional energy conversion of decompression transformation;
Drive motor inverter, is connected with drive motor with described reversible transducer, and the electric energy that described reversible transducer is boosted after processing carries out inversion, for described drive motor is powered;
Electrical network adaptor union, is connected with electrical network and is connected with described reversible transducer, by described reversible transducer, is that described closed-center system charges;
Controller, comprise driver module and control module, in described control module, be provided with motor drive mode, brake energy feedback pattern and electrical network access intelligent charge pattern, described driver module is connected with drive motor inverter with described reversible transducer, and described control module drives described reversible transducer and described drive motor inverter to move according to different master mode sending controling instructions and by driver module.
The multi-functional integrated power electronic system of electronlmobil of the present invention, described reversible transducer comprises the first electric capacity and two electronic power switches between the both positive and negative polarity that is connected on successively described closed-center system; Between the center-point of described two electronic power switches and the positive pole of described closed-center system, be in series with an inductance; Between the negative pole of the anodal and described closed-center system of described the first electric capacity, be also provided with the electric capacity of two series connection.
The multi-functional integrated power electronic system of electronlmobil of the present invention, described electronic power switch is IGBT switch or switch mosfet or aerotron, described in each, electronic power switch reverse parallel connection arranges a diode, and it is inner or external that described diode is integrated in described electronic power switch.
The multi-functional integrated power electronic system of electronlmobil of the present invention, described drive motor inverter comprises six electronic power switches, every two described electronic power switches are connected into one group of brachium pontis, form three groups of brachium pontis.
The multi-functional integrated power electronic system of electronlmobil of the present invention, after described three groups of brachium pontis parallel connections, one end is connected with the positive pole of described the first electric capacity, the other end is connected with the negative pole of described closed-center system, and the center-point of described every group of brachium pontis is connected with the three-phase input end of drive motor.
The multi-functional integrated power electronic system of electronlmobil of the present invention, the center-point of two electric capacity and the center-point of described drive motor in described series connection are drawn wire, this wire is connected with electrical network adaptor union by plug, for accessing electrical network, is described closed-center system charging.
The multi-functional integrated power electronic system of electronlmobil of the present invention, described control module comprises microprocessor, processor chips peripheral circuit, communication chip and power supply.
The multi-functional integrated power electronic system of electronlmobil of the present invention, described driver module comprises described electronic power switch component driving circuit and protective circuit.
Technique scheme of the present invention has the following advantages compared to existing technology:
(1) the multi-functional integrated power electronic system of electronlmobil of the present invention, comprise closed-center system, reversible transducer, drive motor inverter, electrical network adaptor union, controller and communication network, there is drive motor inversion simultaneously, Bidirectional up-down is pressed the function of conversion and electrical network access intelligent charge, because the charge system of driving motor for electric automobile system and closed-center system can not used simultaneously, therefore this system realized these two functions from hardware in conjunction with together, make its electronic power switch device and the controller can time-sharing multiplex, and integrated setting, volume and the manufacturing cost of whole system have been greatly reduced, also improved the stability of whole system simultaneously.
(2) the multi-functional integrated power electronic system of electronlmobil of the present invention, realizes the voltage stabilization of circuit by reversible transducer, reduced the voltage fluctuation on circuit, has improved the stability of system.
(3) the multi-functional integrated power electronic system of electronlmobil of the present invention, has adopted the connection in series-parallel of two electric capacity and the closed-center system structure of boosting, and can reduce the capacity of bus high-voltage capacitance, thereby without adopting high-capacity electric capacity, reduce the cost of element.
(4) the multi-functional integrated power electronic system of electronlmobil of the present invention, adopt the structure of an electric capacity and storage battery series connection, part electric current is directly supplied with bus by electric capacity and storage battery power supply, reduces the loss of energy on reversible transducer, has improved the efficiency of system.
Accompanying drawing explanation
For content of the present invention is more likely to be clearly understood, below according to a particular embodiment of the invention and by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is the structured flowchart of the multi-functional integrated power electronic system of electronlmobil of the present invention;
Fig. 2 is the electrical block diagram of the multi-functional integrated power electronic system of electronlmobil of the present invention.
The specific embodiment
embodiment 1
Provide a concrete embodiment of the multi-functional integrated power electronic system of electronlmobil of the present invention below, its structured flowchart as shown in Figure 1, comprises closed-center system, reversible transducer, drive motor inverter, electrical network adaptor union, controller and communication network.In described closed-center system, store for drive motor and move required electric energy, be the battery pack of high pressure herein.Reversible transducer, also referred to as buck-boost converter, can carry out boosting or decompression transformation of DC-to-DC.Described reversible transducer is connected with described closed-center system, and direct current (DC) is boosted or decompression transformation.Described drive motor inverter is connected with drive motor with described reversible transducer, and the electric energy that described reversible transducer is boosted after processing carries out inversion, for described drive motor is powered.Described electrical network adaptor union is connected with electrical network and is connected with described reversible transducer, by described reversible transducer, is that described closed-center system charges.Described controller comprises driver module and control module, in described control module, be provided with motor drive mode, brake energy feedback pattern and electrical network access intelligent charge pattern, described driver module is connected with drive motor inverter with described reversible transducer, and described control module is according to different master mode sending controling instructions and drive described reversible transducer and the action of described drive motor inverter.Data between described controller, described two-way inverter, drive motor inverter are transmitted by signal line.
embodiment 2:
In the present embodiment, provide the particular circuit configurations of each several part in embodiment 1, as shown in Figure 2.
Described reversible transducer comprises a capacitor C 1 and two electronic power switch Q1, the Q2 that are connected on successively between the both positive and negative polarity that described closed-center system is high tension battery; Between the center-point of described two electronic power switch Q1, Q2 and the positive pole of described high tension battery, be in series with an inductance L; Between the negative pole of the anodal and described high tension battery of described the first capacitor C 1, be provided with capacitor C 2, the C3 of two series connection.At this; described electronic power switch Q1, Q2 are IGBT switch; it is insulated gate bipolar transistor; between described collector and emitter, reverse parallel connection arranges a diode; as shown in Figure 2, IGBT switch has protective effect described in described diode pair, when reverse voltage is larger; prevent reverse breakdown, described diode plays a role when charging simultaneously.Described drive motor inverter comprises six electronic power switch Q3-Q8, every two described electronic power switches are connected into one group of brachium pontis, as Q3 and Q4, Q5 and Q6, Q7 and Q8 form respectively three groups of brachium pontis, after in parallel, one end is connected with the positive pole of described the first capacitor C 1, the other end is connected with the negative pole of described high tension battery, and the center-point of described every group of brachium pontis is connected with the three-phase input end of drive motor M.Two capacitor C 2, the center-point of C3 and the center-point of described drive motor M in described series connection are drawn wire, by plug, be connected with electrical network adaptor union J, and for accessing electrical network, be described high tension battery charging.Described control module comprises microprocessor, processor chips peripheral circuit, communication chip and power supply, and described driver module comprises described electronic power switch component driving circuit and protective circuit.
The multi-functional integrated power electronic system being formed by foregoing circuit, have simultaneously boost, the function of motor inversion driving and battery intelligent charging.This system has eight electronic power switch Q1-Q8, eight heavy-duty diodes, an inductance L, three groups of capacitor C 1, C2, three phase electric machine M, the electric automobile power battery group that C3, center-point are drawn and the controller being comprised of driver module and control module are formed.Each power diode reverse parallel connection, to each electronic power switch pipe, and is electrically connected.Every two electronic power switches are composed in series brachium pontis, and the two ends of four brachium pontis are electrically connected with bus.The center-point of three brachium pontis in four brachium pontis is electrically connected with the ABC end of motor.Two capacitor C 2, C3 are directly connected into an electric capacity brachium pontis, and the two ends of electric capacity brachium pontis are electrically connected with bus.The center-point of electric capacity brachium pontis and the center-point of three phase electric machine are drawn wire, access electrical network charge the battery by plug.Capacitor C 1 and electrokinetic cell form a brachium pontis, and the center-point of the center-point of this brachium pontis and remaining electric and electronic switch brachium pontis is electrically connected together by inductance L, forms a buck module.In this system, the composite module that rectification when three brachium pontis form motor drive mode when three phase electric machine inversion and charge mode is boosted, another brachium pontis forms battery to the composite module boosting with electrical network intelligent charge of bus.
The controller of this multi-functional integrated power electronic system comprises driver module and control module, described control module is comprised of microprocessor (or digital processor), processor chips peripheral circuit, communication chip and power circuit etc., control module is by accepting the different given instructions of user, the operational factor (speed of a motor vehicle, torque, sense of motion etc.) of electronlmobil, the signal (as: bus voltage of system, motor phase voltage, electric machine phase current, boost inductance electric current, temperature etc.) control the work of this composite system.The control signal of the binistor wherein being obtained by control module is connected to each binistor and is carried out and control by drive plate.
During the work of the multi-functional integrated power electronic system of above-mentioned electronlmobil, the operational mode of system is divided into motor drive mode, brake energy feedback pattern and electrical network access intelligent charge pattern.
(1) when system operates in motor drive mode, first, (entire car controller is the core cell of battery-driven car to entire car controller, the main collaborative work of coordinating between each control system) send the bus instruction of boosting, then the controller of multi-functional integrated power electronic system sends control signal to the drive plate of the brachium pontis that boosts, electronic power switch (Q1-Q8) carries out switch motion, specifically, Q1 is in closed condition, the parallel diode of Q1 carries out conducting according to inductance state, Q2 carries out the adjusting of dutycycle according to the height of bus voltage, the parallel diode of Q2 is in closed condition.Q2-Q8 requires to carry out traditional three phase electric machine PWM control according to the rotating requirement of three phase electric machine and rotating speed.Bus (positive pole of C1 electric capacity is to the connection lead of battery cathode) voltage can be elevated to 400 volts even higher left and right; Then, entire car controller will just send according to gear (or negative) dtc signal, the controller of multi-functional integrated power electronic system receives after the instruction of entire car controller, the signal driving is dealt on drive plate and controls electronic power switch (Q1-Q8), at this, select the signalling methods of CAN bus.
(2) when brake energy feedback pattern, entire car controller sends the controller of giving directions to multi-functional integrated power electronic system and sends a negative torque instruction, the drive control signal of sending by this controller realizes the switch of power electronic devices to drive plate, specifically, Q1 is in PWM state, and the parallel diode of Q1 is in closed condition, and Q2 is in closed condition, the parallel diode of Q2 carries out conducting according to inductance state, carries out the adjusting of dutycycle according to the height of bus voltage.Q2-Q8 requires to carry out traditional three phase electric machine generating PWM control according to the rotating requirement of three phase electric machine and rotating speed.When the energy of feedback stores at bus capacitor (C2 and C3), the voltage of bus can constantly raise.The controller of multi-functional integrated power electronic system sends instruction and controls buck brachium pontis (being formed by electronic power switch Q1 and Q2), allow electronic power switch (Q1) folding of first brachium pontis make buck brachium pontis operate in decompression mode and charge the battery, the energy of feedback is transferred on battery in this way like this.
(3) when electrical network access intelligent charge pattern, electronlmobil must, in static, be connected plug with electrical network.Entire car controller sends grid charging instruction to the controller of multi-functional integrated power electronic system according to user's instruction, and first, system controller sends control signal to the drive plate of the brachium pontis that boosts, and bus voltage can be elevated to 400 volts even higher left and right; Then, close with the join relay of line of electrical network, controller sends control signal and controls inverter bridge leg to drive plate, make inverter bridge leg be operated in booster converter pattern, the power of while control inputs and implementation power factor ontrol, energy just flows to bus from electrical network like this, by the buck brachium pontis of bus, just can control charging current.Specifically, Q1 is in PWM state, and the parallel diode of Q1 is in closed condition, and Q2 is in closed condition, and the parallel diode of Q2 carries out conducting according to inductance state, carries out the adjusting of dutycycle according to the height of bus voltage.Q3, Q5 and Q7 are in closed condition, Q3, Q5 and Q7 parallel diode carry out conducting according to the electric current of motor winding electric machine winding inductance, Q4, Q6 and Q8 are in PWM state, the dutycycle of PWM determines by the power factor of the power charging and electrical network, and Q4, Q6 and Q8 parallel diode are in closed condition.
Obviously, above-described embodiment is only for example is clearly described, and the not restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all embodiments.And the apparent variation of being extended out thus or change are still among the protection domain in the invention.
Claims (9)
1. the multi-functional integrated power electronic system of electronlmobil, is characterized in that, comprising:
Closed-center system, stores electric energy, to drive motor, powers;
Reversible transducer, is connected with described closed-center system, direct current (DC) is boosted or the bi-directional energy conversion of decompression transformation;
Drive motor inverter, is connected with drive motor with described reversible transducer, and the electric energy that described reversible transducer is boosted after processing carries out inversion, for described drive motor is powered;
Electrical network adaptor union, is connected with electrical network and is connected with described reversible transducer, by described reversible transducer, is that described closed-center system charges;
Controller, comprise driver module and control module, in described control module, be provided with motor drive mode, brake energy feedback pattern and electrical network access intelligent charge pattern, described driver module is connected with drive motor inverter with described reversible transducer, and described control module drives described reversible transducer and described drive motor inverter to move according to different master mode sending controling instructions and by driver module;
Described reversible transducer comprises the first electric capacity and two electronic power switches between the both positive and negative polarity that is connected on successively described closed-center system; Between the center-point of described two electronic power switches and the positive pole of described closed-center system, be in series with an inductance; Between the negative pole of the anodal and described closed-center system of described the first electric capacity, be also provided with the electric capacity of two series connection.
2. the multi-functional integrated power electronic system of electronlmobil according to claim 1, it is characterized in that: described electronic power switch is IGBT switch or switch mosfet or aerotron, described in each, electronic power switch reverse parallel connection arranges a diode, and it is inner or external that described diode is integrated in described electronic power switch.
3. according to the multi-functional integrated power electronic system of the electronlmobil described in any one in claim 1 or 2, it is characterized in that: described drive motor inverter comprises six electronic power switches, every two described electronic power switches are connected into one group of brachium pontis, form three groups of brachium pontis.
4. the multi-functional integrated power electronic system of electronlmobil according to claim 3, it is characterized in that: after described three groups of brachium pontis parallel connections, one end is connected with the positive pole of described the first electric capacity, the other end is connected with the negative pole of described closed-center system, and the center-point of described every group of brachium pontis is connected with the three-phase input end of drive motor.
5. the multi-functional integrated power electronic system of electronlmobil according to claim 1 and 2, it is characterized in that: the center-point of two electric capacity and the center-point of described drive motor in described series connection are drawn wire, this wire is connected with electrical network adaptor union by plug, for accessing electrical network, is described closed-center system charging.
6. the multi-functional integrated power electronic system of electronlmobil as claimed in claim 3, it is characterized in that: the center-point of two electric capacity and the center-point of described drive motor in described series connection are drawn wire, this wire is connected with electrical network adaptor union by plug, for accessing electrical network, is described closed-center system charging.
7. the multi-functional integrated power electronic system of electronlmobil as claimed in claim 4, it is characterized in that: the center-point of two electric capacity and the center-point of described drive motor in described series connection are drawn wire, this wire is connected with electrical network adaptor union by plug, for accessing electrical network, is described closed-center system charging.
8. the multi-functional integrated power electronic system of electronlmobil according to claim 1 and 2, is characterized in that: described control module comprises microprocessor, processor chips peripheral circuit, communication chip and power supply.
9. the multi-functional integrated power electronic system of electronlmobil according to claim 1 and 2, is characterized in that: described driver module comprises described electronic power switch component driving circuit and protective circuit.
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| CN201210288075.5A CN102826054B (en) | 2012-08-14 | 2012-08-14 | Multi-functional integrated power electronic system of electric automobile |
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| CN201966869U (en) * | 2011-04-29 | 2011-09-07 | 重庆特瑞捷电驱动系统有限公司 | Voltage transformation speed regulation controller for pure electric vehicle driving motor |
| CN102185487A (en) * | 2011-05-17 | 2011-09-14 | 清华大学 | Mixed cascading type multilevel stored energy charging-discharging and voltage-equalizing circuit |
| CN102437628A (en) * | 2011-10-22 | 2012-05-02 | 华北电力大学（保定） | Storage battery reduction charge-discharge converter circuit |
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| US8244427B2 (en) * | 2010-05-24 | 2012-08-14 | GM Global Technology Operations LLC | Modular temperature performance diagnostic for a vehicle |
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|---|---|---|---|---|
| CN101218119A (en) * | 2005-05-05 | 2008-07-09 | Afs三一电力公司 | Plug-in hybrid vehicle with fast energy storage |
| CN101944745A (en) * | 2010-09-06 | 2011-01-12 | 北京理工大学 | Energy storage system and control method thereof |
| CN201966869U (en) * | 2011-04-29 | 2011-09-07 | 重庆特瑞捷电驱动系统有限公司 | Voltage transformation speed regulation controller for pure electric vehicle driving motor |
| CN102185487A (en) * | 2011-05-17 | 2011-09-14 | 清华大学 | Mixed cascading type multilevel stored energy charging-discharging and voltage-equalizing circuit |
| CN102437628A (en) * | 2011-10-22 | 2012-05-02 | 华北电力大学（保定） | Storage battery reduction charge-discharge converter circuit |
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