CN103187760B - Electric automobile and the active bleed-off system for electric automobile - Google Patents

Electric automobile and the active bleed-off system for electric automobile Download PDF

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Publication number
CN103187760B
CN103187760B CN201210590380.XA CN201210590380A CN103187760B CN 103187760 B CN103187760 B CN 103187760B CN 201210590380 A CN201210590380 A CN 201210590380A CN 103187760 B CN103187760 B CN 103187760B
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China
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module
switch
way
control
charging
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CN103187760A (en
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赵军
李帅辉
唐甫
汤哲晴
李英涛
梁岂源
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BYD Co Ltd
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BYD Co Ltd
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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
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Secondary Cells (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

The present invention proposes a kind of active bleed-off system for electric automobile, including: electrokinetic cell；Bus capacitor；Charging/discharging socket；Two-way DC/DC module；Drive and control switch；Two-way DC/AC module；Motor control switch；Charge and discharge control module；Controller module, described controller module controls switch, motor control switch and charge and discharge control module with described driving and is connected, and described controller module drives control switch, motor control switch and charge and discharge control module to be controlled for the mode of operation being presently according to described active bleed-off system to described.This active bleed-off system is capable of using civilian or industrial AC network that electric automobile is carried out high power AC charging, makes the user can the most efficiently, charge efficiently, and applicable battery operating voltage wide ranges saves space and cost.The invention allows for a kind of electric automobile.

Description

Electric automobile and the active bleed-off system for electric automobile
Technical field
The present invention relates to electric vehicle engineering field, particularly to a kind of active bleed-off system for electric automobile and A kind of electric automobile with this active bleed-off system.
Background technology
Along with the development of science and technology, the electric automobile of environmental protection and energy saving is play the role replacing fuel vehicle, but electronic Universal some problems that also face of automobile, the highest course continuation mileage and efficiently charging technique, it has also become electronic vapour The a great problem that car is promoted.
At present, electric automobile uses jumbo battery mostly, although can improve the flying power of electric automobile, but Same jumbo battery brings again charging interval long problem.Although the DC charging station of specialty can be quick It is charged for battery, but the problem such as the cost of great number and bigger floor space makes the universal also face of this infrastructure Facing certain difficulty, simultaneously again due to the limited space of vehicle, onboard charger cannot be expired by the restriction of volume Foot charge power.
The charging scheme taked currently on the market has following several:
Scheme (1): as depicted in figs. 1 and 2, the vehicle-mounted charge and discharge device in this scheme mainly includes that three phase mains becomes Depressor 1 ', six Thyristors form three-phase bridge circuit 2 ', constant-pressure control device AUR and constant-current control device ACR, but program serious waste space and cost.
Scheme (2): as it is shown on figure 3, the vehicle-mounted charge and discharge device in this scheme installs two for adapting to the charging of list/three-phase Individual charging socket 15 ', 16 ', adds cost；Motor driving loop comprises the filtering that inductance L1 ' and electric capacity C1 ' forms Module, when motor drives, three-phase current module after filtering produces loss, is the waste to battery electric quantity；The party During case charge/discharge operation, inverter 13 ' carries out rectification/inversion to alternating current, and after rectification/inversion, voltage is unadjustable, is suitable for Battery operating voltage narrow range.
In sum, the AC charging technology taked in the market uses individual event charging technique mostly, and this technology is deposited , charging interval length, hardware volume little at charge power are relatively big, function singleness, be limited to the voltage of different regions electrical network The shortcomings such as grade restriction.
Summary of the invention
The purpose of the present invention is intended at least solve one of above-mentioned technological deficiency.
To this end, it is an object of the present invention to propose a kind of active bleed-off system for electric automobile, it is possible to realize Use civilian or industrial AC network that electric automobile is carried out high power AC charging, make user can whenever and wherever possible efficiently, Charge efficiently, it is not necessary to constant-pressure control device and constant-current control device, save space and cost, and applicable battery work Make voltage range width.
Another object of the present invention also resides in a kind of electric automobile of proposition.
For reaching above-mentioned purpose, the active bleed-off system for electric automobile that one aspect of the present invention embodiment proposes, bag Include: electrokinetic cell；Bus capacitor；Charging/discharging socket；Two-way DC/DC module, described two-way DC/DC module First DC terminal is connected with the other end of described electrokinetic cell, and the second DC terminal of described two-way DC/DC module is with described One end of electrokinetic cell be connected, wherein, described first DC terminal be described two-way DC/DC module input and output be total to Use DC terminal；Driving and control switch, described one end driving control switch is connected with described electrokinetic cell one end, described The other end controlling switch is driven to be connected with the 3rd DC terminal of described two-way DC/DC module；Two-way DC/AC module, First DC terminal of described two-way DC/AC module drives the other end controlling switch to be connected with described, described two-way Second DC terminal of DC/AC module is connected with the other end of described electrokinetic cell；Motor control switch, described motor control One end of system switch is connected with the end that exchanges of described two-way DC/AC module, the other end of described motor control switch and electricity Machine is connected；Charge and discharge control module, one end of described charge and discharge control module exchanges with described two-way DC/AC module End is connected, and the other end of described charge and discharge control module is connected with described charging/discharging socket；And controller module, institute Stating controller module drives control switch, motor control switch and charge and discharge control module to be connected with described, described control Device module controls switch, motor control for the mode of operation being presently according to described active bleed-off system to described driving System switch and charge and discharge control module are controlled.
The active bleed-off system for electric automobile according to embodiments of the present invention, it is possible to realize using civilian or industrial friendship Stream electrical network carries out high power AC charging to electric automobile, makes the user can the most efficiently, charge efficiently, joint Save the charging interval, simultaneously without constant-pressure control device and constant-current control device, save space and cost, and be suitable for electricity Pond operating voltage range width.
Additionally, the embodiment of another aspect of the present invention also proposed a kind of electric automobile, release including above-mentioned active System.This electric automobile can carry out high-power charging by three-phase or single-phase electricity, facilitates user whenever and wherever possible to electronic Automobile carries out quick charge, has saved time cost, meets the demand of people.
Aspect and advantage that the present invention adds will part be given in the following description, and part will become from the following description Obtain substantially, or recognized by the practice of the present invention.
Accompanying drawing explanation
The present invention above-mentioned and/or that add aspect and advantage will become bright from the following description of the accompanying drawings of embodiments Aobvious and easy to understand, wherein:
Fig. 1 is the circuit diagram of existing a kind of vehicle-mounted charge and discharge device；
Fig. 2 is the control schematic diagram of existing a kind of vehicle-mounted charge and discharge device；
Fig. 3 is the circuit diagram of the vehicle-mounted charge and discharge device of existing another kind；
Fig. 4 is the block diagram of the active bleed-off system for electric automobile according to one embodiment of the invention；
Fig. 5 is the topological diagram of the active bleed-off system for electric automobile according to one embodiment of the invention；
Fig. 6 is that the further square frame for the active bleed-off system of electric automobile according to one embodiment of the invention shows It is intended to；
Fig. 7 is the block diagram of the controller module according to one embodiment of the invention；
Fig. 8 is the DSP in the controller module according to one example of the present invention and peripheral hardware circuit interface schematic diagram；
Fig. 9 is the function decision flow chart of the active bleed-off system for electric automobile according to one embodiment of the invention；
Figure 10 is that the active bleed-off system for electric automobile according to one embodiment of the invention carries out drive and control of electric machine The block diagram of function；
Figure 11 is that the active bleed-off system charging/discharging function startup for electric automobile according to one embodiment of the invention is sentenced Disconnected flow chart；
Figure 12 is that the active bleed-off system for electric automobile according to one embodiment of the invention is under charge mode Control flow chart；
Figure 13 is that the active bleed-off system for electric automobile according to one embodiment of the invention is tied at charging electric vehicle Control flow chart during bundle；
Figure 14 is to be connected circuit diagram between the electric automobile according to one embodiment of the invention and power supply unit；
Figure 15 is that electric automobile is filled by the actively bleed-off system parallel connection of the employing two according to another embodiment of the present invention The schematic diagram of electricity；
Figure 16 is the schematic diagram of the charging/discharging socket according to one example of the present invention；
Figure 17 is the schematic diagram of the off-network band placing plug according to another example of the present invention；
Figure 18 is the structure chart of the power carrier communication system for electric automobile according to further embodiment of the present invention；
Figure 19 is the block diagram of power carrier wave communication device；
Figure 20 is that eight power carrier wave communication devices carry out the schematic diagram of communication with the corresponding device that controls；
Figure 21 is the method flow diagram that power carrier communication system carries out data receiver；And
Figure 22 is the body structure signal of the active bleed-off system for electric automobile according to a still further embodiment of the present invention Figure.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, the most from start to finish Same or similar label represents same or similar element or has the element of same or like function.Below by ginseng The embodiment examining accompanying drawing description is exemplary, is only used for explaining the present invention, and is not construed as limiting the claims.
Following disclosure provides many different embodiments or example for realizing the different structure of the present invention.For letter Changing disclosure of the invention, hereinafter parts and setting to specific examples are described.Certainly, they are the most merely illustrative, And it is not intended to limit the present invention.Additionally, the present invention can in different examples repeat reference numerals and/or letter. This repetition is for purposes of simplicity and clarity, between itself not indicating discussed various embodiment and/or arranging Relation.Additionally, the various specific technique that the invention provides and the example of material, but ordinary skill people Member is it can be appreciated that the property of can be applicable to of other techniques and/or the use of other materials.It addition, described below first is special Levy second feature it " on " structure can include that the first and second features are formed as the embodiment directly contacted, it is possible to To include the embodiment that other feature is formed between the first and second features, such first and second features may not It it is directly contact.
In describing the invention, it should be noted that unless otherwise prescribed and limit, term " is installed ", " being connected ", " connect " and should be interpreted broadly, for example, it may be mechanically connected or electrical connection, it is also possible to be the company of two element internals Logical, can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, for those of ordinary skill in the art Speech, can understand the concrete meaning of above-mentioned term as the case may be.
With reference to explained below and accompanying drawing, it will be clear that these and other aspects of embodiments of the invention.Describe at these With in accompanying drawing, specifically disclose some particular implementation in embodiments of the invention, represent and implement the present invention's Some modes of the principle of embodiment, but it is to be understood that the scope of embodiments of the invention is not limited.On the contrary, All changes in the range of spirit that embodiments of the invention include falling into attached claims and intension, amendment and Equivalent.
Describe with reference to the accompanying drawings the active bleed-off system for electric automobile proposed according to embodiments of the present invention and There is the electric automobile of this active bleed-off system.
As shown in Figure 4, the active bleed-off system for electric automobile that one embodiment of the invention proposes includes power current Pond 10, bus capacitor C0, charging/discharging socket 20, two-way DC/DC module 30, drive and control switch 40, two-way DC/AC module 50, motor control switch 60, charge and discharge control module 70 and controller module 80.
Wherein, one end of bus capacitor C0 is connected with the first DC terminal a1 of two-way DC/DC module 30, and bus The other end of electric capacity is connected with the 3rd DC terminal a3 of two-way DC/DC module 30.The of two-way DC/DC module 30 One DC terminal a1 is connected with the other end of electrokinetic cell 10, and the second DC terminal a2 of two-way DC/DC module 30 is with dynamic One end of power battery 10 be connected, and the first DC terminal a1 be two-way DC/DC module 30 input and export share DC terminal.Drive the one end controlling switch 40 to be connected with one end of electrokinetic cell 10, drive control switch 40 another End is connected with the 3rd DC terminal a3 of two-way DC/DC module 30.First DC terminal b1 of two-way DC/AC module 50 It is connected with driving the other end controlling switch 40, the second DC terminal b2 of two-way DC/AC module 50 and electrokinetic cell The other end of 10 is connected, and one end of motor control switch 60 is connected with the end c that exchanges of two-way DC/AC module 50, electricity Machine controls the other end of switch 60 and is connected with motor M.One end of charge and discharge control module 70 and two-way DC/AC mould The exchange end c of block 50 is connected, and the other end of charge and discharge control module 70 is connected with charging/discharging socket 20.Controller mould Block 80 is connected with driving control switch 40, motor control switch 60 and charge and discharge control module 70, controller module 80 control switch 40, motor control switch 60 for the mode of operation being presently according to active bleed-off system to driving It is controlled with charge and discharge control module 70, and controller module 80 control bus electric capacity C0 after completing charging Continue as electrokinetic cell 10 to charge, and controller module 80 control bus electric capacity C0 continues to put after completing electric discharge Electricity, until the voltage of bus capacitor C0 is less than the first preset value.In one embodiment of the invention, this preset value with The voltage of electrokinetic cell 10 is equal, or with the difference of the voltage of electrokinetic cell 10 within less range of error, If preset value is electrokinetic cell voltage U1 ± Φ, wherein, Φ is a reasonable error value, such as ± 0.1V.
In one embodiment of the invention, after completing charging, controller module 80 controls charge and discharge control module 70 and motor control switch 60 disconnect, control to drive simultaneously and control switch 40 so that bus capacitor C0 is by two-way DC/DC module 30 is charged for electrokinetic cell 10.Specifically, as it is shown in figure 5, as a concrete example, this When the active bleed-off system of inventive embodiments is operated in charge mode, motor control switch 60 and second switch K2 Guan Bi, Bus capacitor C0 terminal voltage is U2, the U2 voltage U1 more than electrokinetic cell.When needs complete charge, first by Two switch K2 disconnect, and now actively bleed-off system disconnects with electrical network, the electric capacity C1 in two-way DC/DC module 30, First inductance L1 etc. works on and charges to electrokinetic cell 10, is now powered by bus capacitor C0, thus can be The energy of bus capacitor C0 is released, when voltage U2 bus capacitor C0 being detected drops to electrokinetic cell voltage During U1 ± Φ scope, it is allowed to actively bleed-off system quits work, disconnect second switch K2.
Additionally, after completing electric discharge, controller module 80 controls motor control switch 70 and disconnects, control to drive simultaneously Dynamic control switch 40 so that the electric capacity C1 in bus capacitor C0 and two-way DC/DC module 30 is by two-way DC/AC Module 50, charge and discharge control module 70 and charging/discharging socket 20 carry out discharging so that described bus capacitor is pre-less than second If value, wherein, described second preset value is less than described first preset value.As a concrete example, such as Fig. 5 institute Showing, (as to electrical network or other vehicle) when actively bleed-off system externally discharges, adhesive second switch K2, motor controls Switch 60, the terminal voltage of bus capacitor C0 is U2, the U2 voltage U1 more than electrokinetic cell 10.Externally electric discharge, Externally at the end of electric discharge, first disconnecting second switch K2, work on externally electric discharge, is now powered by bus capacitor C0, Thus can consume the electric energy in bus capacitor C0, when voltage U2 bus capacitor being detected drops to battery electricity During pressure U1 ± Φ scope, it is allowed to system stalls, disconnect charge and discharge control module 70.
Further, in an embodiment of the present invention, the mode of operation that actively bleed-off system is presently in can include driving Dynamic model formula and charge and discharge mode.When the mode of operation that active bleed-off system is presently in is drive pattern, controller mould Block 80 controls to drive control switch 40 to close to close two-way DC/DC module 30, and controls motor control switch 60 Guan Bi is with driven motor M, and control charge and discharge control module 70 disconnects.It should be noted that in the present invention Embodiment in, although in Fig. 5, motor control switch 60 includes and inputs, with motor three-phase, three switches being connected, but It is to may also comprise two switches that input biphase with motor is connected, even one switch in other embodiments of the invention. As long as the control to motor can be realized at this.Therefore, other embodiments do not repeat them here.When actively releasing it is When the mode of operation that is presently in of system is charge and discharge mode, controller module 80 control to drive control switch 40 disconnection with Start two-way DC/DC module 30, and control motor control switch 60 and disconnect removing motor M, and control to fill Control of discharge module 70 closes, and makes external power source to be normally charged for electrokinetic cell 10.Two-way DC/DC First DC terminal a1 and the 3rd DC terminal a3 of module 30 are connected with the positive and negative terminal of dc bus.
In one embodiment of the invention, as it is shown in figure 5, also include for the active bleed-off system of electric automobile One preliminary filling control module 101, one end of the first preliminary filling control module 101 is connected with one end of electrokinetic cell 10, and first The other end of preliminary filling control module 101 is connected with the second DC terminal a2 of two-way DC/DC module 30, the first preliminary filling control Molding block 101 is used for being pre-charged for the electric capacity C1 in two-way DC/DC module 30 and bus capacitor C0, its In, bus capacitor C0 is connected to the first DC terminal a1 of two-way DC/DC module 30 and two-way DC/DC module 30 The 3rd DC terminal a3 between.Wherein, the first preliminary filling control module 101 includes the first resistance R1, the first switch K1 With second switch K2.One end of first resistance R1 is connected with one end of the first switch K1, another of the first resistance R1 End is connected with one end of electrokinetic cell 10, and the other end of the first switch K1 is straight with the second of two-way DC/DC module 30 Stream end a2 is connected, in parallel with second switch K2 after the first resistance R1 and first switch K1 series connection, wherein, controls Device module 80 switchs K1 in active bleed-off system startup control system first and closes with in two-way DC/DC module 30 Electric capacity C1 and bus capacitor C0 is pre-charged, and becomes with the voltage of electrokinetic cell 10 at the voltage of bus capacitor C0 During preset multiple, control the first switch K1 and disconnect control second switch K2 Guan Bi simultaneously.
As it is shown in figure 5, two-way DC/DC module 30 farther include the first switching tube Q1, second switch pipe Q2, First diode D1, the second diode D2, the first inductance L1 and the first electric capacity C1.Wherein, the first switching tube Q1 Being connected in series with each other with second switch pipe Q2, the first switching tube Q1 and the second switch pipe Q2 that are serially connected are connected to Between first DC terminal a1 and the 3rd DC terminal a3 of two-way DC/DC module 30, the first switching tube Q1 and second opens Close the control of pipe Q2 controlled device module 80, and have first between the first switching tube Q1 and second switch pipe Q2 Node A.First diode D1 and the first switching tube Q1 reverse parallel connection, the second diode D2 and second switch pipe Q2 Reverse parallel connection, one end of the first inductance L1 is connected with primary nodal point A, the other end of the first inductance L1 and electrokinetic cell One end of 10 is connected.One end of first electric capacity C1 is connected with the other end of the first inductance L1, and the first electric capacity C1's is another One end is connected with the other end of electrokinetic cell 10.
Additionally, in an embodiment of the present invention, as it is shown in figure 5, this active bleed-off system being used for electric automobile also wraps Including leakage current and cut down module 102, leakage current is cut down module 102 and is connected to the first DC terminal of two-way DC/DC module 30 Between 3rd DC terminal a3 of a1 and two-way DC/DC module 30.Specifically, leakage current reduction module 102 includes Second electric capacity C2 and the 3rd electric capacity C3, one end of the second electric capacity C2 is connected with one end of the 3rd electric capacity C3, the second electricity Hold C2 the other end be connected with the first DC terminal a1 of two-way DC/DC module 30, the other end of the 3rd electric capacity C3 and 3rd DC terminal a3 of two-way DC/DC module 30 is connected, and wherein, has between the second electric capacity C2 and the 3rd electric capacity C3 There is secondary nodal point B.
It is typically due to inversion and the grid-connected system of transless isolation, generally there is the difficult point that leakage current is big.Therefore, should Actively bleed-off system increases leakage current reduction module 102 at dc bus positive and negative terminal, can effectively reduce leakage current.Leakage current Cut down module 102 comprise two with type capacitive C2 and C3, it is arranged in dc bus positive and negative terminal and three-phase alternating current Between some current potential, the high frequency electric of generation can be fed back to when native system works DC side, can effectively reduce and be System high-frequency leakage current operationally.
In one embodiment of the invention, as it is shown in figure 5, this active bleed-off system being used for electric automobile also includes Filtration module 103, filtering control module 104, EMI module 105 and the second preliminary filling control module 106.
Wherein, filtration module 103 is connected between two-way DC/AC module 50 and charge and discharge control module 70.Specifically For, as it is shown in figure 5, filtration module 103 includes inductance LA、LB、LCWith electric capacity C4, C5, C6, and two-way DC/AC module 50 can include that six IGBT, the junction point between upper and lower two IGBT pass through electrical bus respectively It is connected with filtration module 103 and motor control switch 60.
As it is shown in figure 5, filtering control module 104 is connected between secondary nodal point B and filtration module 103, and filter Ripple control module 104 controlled device module 80 controls, the work that controller module 80 is presently at active bleed-off system Control filtering control module 104 when operation mode is drive pattern to disconnect.Wherein, filtering control module 104 can be electricity Hold switching relay, be made up of catalyst K10.EMI module 105 is connected to charging/discharging socket 20 and charge and discharge control Between module 70.It should be noted that the position of catalyst k10 is only illustrative in Figure 5.The present invention's In other embodiments, catalyst K10 also may be provided in other positions, as long as being capable of the shutoff to filtration module 103 ?.Such as, in another embodiment of the present invention, this catalyst K10 can also be connected to two-way DC/AC mould Between block 50 and filtration module 103.
Second preliminary filling module 106 is in parallel with charge and discharge control module 70, and the second preliminary filling control module 106 is for filtering Electric capacity C4, C5, C6 in module 103 are pre-charged.Wherein, the second preliminary filling control module 106 includes mutually Three resistance R of series connectionA、RB、RCK9 is switched with three-phase preliminary filling.
In one embodiment of the invention, as it is shown in figure 5, charge and discharge control module 70 farther includes threephase switch K8 and/or single-phase switch K7, is used for realizing three-phase discharge and recharge or single-phase discharge and recharge.
It is to say, in an embodiment of the present invention, when active bleed-off system starts, controller module 80 controls One switch K1 closes to be pre-charged the first electric capacity C1 in two-way DC/DC module 30 and bus capacitor C0, And when the voltage of bus capacitor C0 becomes preset multiple with the voltage of electrokinetic cell 10, control the first switch K1 and disconnect Control second switch K2 Guan Bi simultaneously.So, by two-way DC/DC module 30 with being connected directly between electrical bus it is Large Copacity bus capacitor C0 composition between dc bus realizes the critical piece of battery low-temp activation technology, for moving The electric energy of power battery 10 is charged in Large Copacity bus capacitor C0 by two-way DC/DC module 30, then Large Copacity is female The electric energy stored in line capacitance C0 fills back electrokinetic cell 10(by two-way DC/DC module 30 and i.e. fills electrokinetic cell During electricity), make the temperature of electrokinetic cell rise to optimum working temperature scope electrokinetic cell 10 cycle charge-discharge.
When the mode of operation that active bleed-off system is presently in is drive pattern, controller module 80 controls to drive and controls Switch 40 Guan Bi is to close two-way DC/DC module 30, and controls motor control switch 60 and close with driven motor M, and control charge and discharge control module 70 disconnect.So, by 50 electrokinetic cells 10 of two-way DC/AC module DC inverter be alternating current and flow to motor M, it is possible to use rotate transformation decoder technique and space vector arteries and veins Wide modulation (SVPWM) control algolithm controls the operation of motor M.
When the mode of operation that active bleed-off system is presently in is charge and discharge mode, controller module 80 controls to drive control System switch 40 disconnection is to start two-way DC/DC module 30, and controls motor control switch 60 and disconnect with by motor M Remove, and control charge and discharge control module 70 closes, and makes external power source such as three-phase electricity or single-phase electricity pass through charge and discharge Electrical socket 20 can normally be charged for electrokinetic cell 10.I.e. say, by detection charging connection signal, exchange Electrical network electricity system and the relevant information of car load battery management, use two-way DC/AC module 50 and carry out controlled rectification function, And combine two-way DC/DC module 30, can realize single-phase the three-phase electricity charging to electrokinetic cell 10.
The active bleed-off system for electric automobile according to embodiments of the present invention, it is possible to realize using civilian or industrial friendship Stream electrical network carries out high power AC charging to electric automobile, makes the user can the most efficiently, charge efficiently, joint Save the charging interval, simultaneously without constant-pressure control device and constant-current control device, save space and cost, and be suitable for electricity Pond operating voltage range width.
Additionally, in an embodiment of the present invention, as shown in Figure 6, this active bleed-off system being used for electric automobile also may be used To include high-tension distribution box 90, instrument 107, battery manager 108 and car load signal 109.Wherein, control is driven to open Close the 40, first switch K1 and second switch K2 can be arranged in high-tension distribution box 90.
In one embodiment of the invention, as it is shown in fig. 7, controller module 80 includes panel 201 and drives plate 202.Wherein, the control module on panel 201 uses two high-speed digital video camera chips (DSP1 and DSP2) It is controlled.Control module on panel 201 is connected with whole vehicle information interface 203, and it is mutual mutually to carry out information. Control module on panel 201 receives the busbar voltage sampled signal of driving module output driven on plate 202, IPM Protection signal and IGBT temperature sampled signal etc., output pulse width modulation (PWM) signal is to driving module simultaneously.
Wherein, as shown in Figure 8, DSP1 is mainly used in controlling, and DSP2 is used for information gathering.Sampling list in DSP1 Unit output throttle signal, busbar voltage sampled signal, brake signal, DC voltage sampled signal, current of electric are suddenly That V phase signals, current of electric Hall W phase signals, charging control current Hall U phase signals, charging control electric current Hall V phase signals, charging control current Hall W phase signals, DC current hall signal, inverter voltage U believe Number, inverter voltage V phase signals, inverter voltage W phase signals, line voltage U phase signals, line voltage V believe Number, line voltage W phase signals, inversion U phase capture signal, electrical network U phase captures the sampled signals such as signal, DSP1 In switch control unit output motor A phase switching signal, motor B phase switching signal, electrical network A phase switching signal, Electrical network B phase switching signal, electrical network C phase switching signal, three-phase preliminary filling switching signal and electric capacity switching relay signal etc., Driver element output A phase PWM1 signal, A phase PWM2 signal, B phase PWM1 signal, B phase in DSP1 PWM2 signal, C phase PWM1 signal, C phase PWM2 signal, DC phase PWM1 signal, DC phase PWM2 Signal and IPM protection signal etc., DSP1 also has rotation varying signal output control, serial communication, hardware protection, CAN The functions such as communication and gear control.In DSP2 sampling unit output power supply monitoring signal, power supply monitoring signal, Throttle 1 signal, 2 signals that brake, throttle 2 signal, 1 signal that brakes, motor simulation temperature signal, electric leakage sensing Device signal, heat-sink temperature signal, DC side inductor temperature sampled signal, V phase inductance temperature sampling signal, U phase Inductor temperature sampled signal, W phase inductance temperature sampling signal, electric discharge PWM voltage sampling signal, obliquity sensor Read signal, obliquity sensor chip selection signal, IGBT temperature sampling W phase signals, IGBT temperature sampling U phase signals, IGBT temperature sampling buck phase signals, IGBT temperature sampling V phase signals, motor temperature switching signal, list/three-phase Switching switching signal etc., charge-discharge control unit output charge and discharge switch signal, sleep signal, the electric discharge in DSP2 Pwm signal, battery manager BMS signal, discharge and recharge output control signal, CP signal and CC signal etc., and And DSP2 also has CAN communication, Serial Communication Function.
In sum, the embodiment of the present invention propose for electric automobile active bleed-off system collection motor drive function, Wagon control function, AC charging function, grid-connected function, off-network band carry function, vehicle to Vehicular charging function in one Body.Further, this active bleed-off system is integrated not by simple for various functional modules physical combination, but On the basis of drive and control of electric machine, by adding some peripheral components, it is achieved the functional diversities of system, maximize joint Save space and cost, improve power density.
Specifically, the function for the active bleed-off system of electric automobile is simply described below:
1, motor drives function: by the DC inverter of two-way 50 electrokinetic cells 10 of DC/AC module for exchanging Electricity also flows to motor M, it is possible to use rotate transformation decoder technique and space vector pulse width modulation (SVPWM) control Algorithm processed controls the operation of motor M.
It is to say, when this active bleed-off system obtains electric work, as it is shown in figure 9, this systemic-function judges flow process bag Include following steps:
S901, actively bleed-off system obtains electric.
S902, it is judged that charging connection signal.If there being charging connection signal, then go to step S903, without then Go to step 904.
S903, enters charge and discharge control flow process.In one embodiment of the invention, in addition it is also necessary to throttle, gear and Brake signal judges.When throttle be 0, gear be N shelves, parking brake, charging connection i.e. CC signal effective time ( Charging/discharging socket 20 connects charging connecting device), then enter charge and discharge control flow process.
S904, enters wagon control flow process.
After step S904 enters wagon control flow process, controller module 80 controls motor control switch 60 and closes, logical Crossing CAN communication notice battery manager 108, battery manager 108 controls high-tension distribution box 90 and enters C1 and C0 Row preliminary filling, controller module 80 detects busbar voltage 187, it is judged that preliminary filling is the most successful, notifies battery management after success Device 108 Guan Bi drives and controls switch 40, and this system enters drive pattern, and whole vehicle information is entered by controller module 80 simultaneously Row gathers, and is processed by comprehensive descision and is driven motor M.
Carrying out drive and control of electric machine function: as shown in Figure 10, controller module 80 sends pwm signal, to two-way DC/AC module 50 is controlled, and is alternating current the DC inverter of electrokinetic cell 10 and flows to motor M, control Device module processed 80 resolves rotor-position by rotary transformer, and gathers busbar voltage and motor B, C phase current makes electricity Machine M can run accurately.I.e. say, motor B, C phase current letter that controller module 80 is sampled according to current sensor Number and the feedback information of rotary transformer pwm signal is adjusted, finally make motor M to run accurately.
So, by communication module to car load throttle, brake and gear information, it is judged that current operating condition, it is achieved The acceleration of vehicle, deceleration and energy feedback function so that car load is lower safe and reliable operation under various operating modes, it is ensured that car Safety, dynamic property and ride comfort.
2, charging/discharging function
(1) charging/discharging function connects confirmation and starts: as shown in figure 11, this active bleed-off system charging/discharging function opens Move and judge that flow process comprises the steps:
S1101, the i.e. charging/discharging socket physical connection of charge-discharge connecting device completes, and power supply is normal.
S1102, power supply unit detection charging signals CC connects the most normal.If it is, enter step S1103； If it is not, then return step S1102, continue detection.
S1103, whether the voltage of power supply unit detection CP test point is 9V.If it is, enter step S1106； If it does not, return step S1102, continue detection.Wherein, 9V is a default example value.
S1104, controller module detection charging signals CC connects the most normal.If it is, enter step S1105； If it is not, then return step S1104, continue detection.
S1105, drags down output charging connection signal, charging indicator light signal.
S1106, enters charging/discharging function.
As shown in figure 12, this active bleed-off system control flow under charge mode comprises the steps:
S1201, it is judged that system obtain electric after start work the most completely.If it is, enter step S1202；If it does not, Then return step S1201, continue to judge.
S1202, detects CC test point resistance value, determines charging connecting device capacity.
S1203, it is judged that whether CP test point detects the pwm signal of fixed duty cycle.If it is, enter step Rapid S1204；If it is not, then enter step S1205.
S1204, sends charging connection and charges normal ready message, receives BMS charging permission, charging contactor Adhesive message, enters step S1206.
S1205, charging connection fault.
S1206, controller module adhesive internal switch.
S1207, it is judged that Preset Time detects in such as 1.5 seconds whether external charging equipment sends without PWM ripple.As Fruit is, then enter step S1208；If it is not, then enter step S1209.
S1208, it is judged that for outside GB charging pile, do not send PWM ripple in charging process.
S1209, sends PWM ripple to power supply unit.
S1210, it is judged that Preset Time detects exchange input in such as 3 seconds the most normal.If it is, entrance step S1213；If it is not, then enter step S1211.
S1211, exchanges external charging equipment fault.
S1212, carries out abnormality processing.
S1213, enters the charging stage.
It is to say, as is illustrated by figs. 11 and 12, after power supply unit and controller module 80 self-inspection fault-free, according to Detection CC signal resistance value determines that charging connecting device capacity, detection CP signal determine whether to be fully connected, discharge and recharge After attachment means is fully connected confirmation, send that charging connection is normal and the ready message that charges, battery manager 108 Control high-tension distribution box 90 closes the first switch K1 and carries out preliminary filling, and preliminary filling disconnects K1, adhesive second switch after completing K2, controller module 80 receives BMS charging permission, second switch K2 adhesive message, and discharge and recharge is ready, Function can be set by instrument, as follows: AC charging function (G to V, electrical network is to electric automobile), off-network band carry Function (V to L, electric automobile is to load), grid-connected function (V to G, electric automobile is to electrical network) and vehicle are to car Charge function (V to V, electric automobile is to electric automobile).
(2) AC charging function (G to V): this active bleed-off system receives instrument charging instruction, battery management Device 108 allows maximum charging current, power supply unit maximum supply current and charge-discharge connecting device i.e. charging/discharging socket 20 Rated current, controller module 80 judges in three minimum charging current, automatically selects charging relevant parameter.And And, the alternating current of power supply unit conveying is sampled by this active bleed-off system by line voltage sampling 183, controls Device module 80 calculates alternating current voltage virtual value by sampled value, determines ac frequency by capture, according to electricity Pressure value and frequency judge alternating current electricity system, choose control parameter according to electrical network electricity system.After determining control parameter, control Device module 80 controls the K9 in the second preliminary filling module 106 and the catalyst K10 adhesive in filtering control module 104, Being charged DC side bus capacitor C0, controller module 80 is sampled by the voltage of 187 pairs of bus capacitors, Such as become with the voltage of electrokinetic cell after preset multiple, to control adhesive three-phase again to open when capacitance voltage reaches the selected parameter that controls Close K8, simultaneously switch off K9.Now this active bleed-off system sends PWM according to Yu Xianxuanding parameter, controller module 80 Signal, controls two-way DC/AC module 50 and alternating current is carried out rectification, further according to electrokinetic cell voltage, control two-way Voltage is adjusted by DC/DC module 30, finally unidirectional current is flowed to electrokinetic cell 10, in the process, control The phase current that device module 80 processed is fed back according to preselected target charge current and current sample 184, lets out whole active Place system carries out the electric current loop regulation of closed loop, and electrokinetic cell 10 is charged by final realization.Thus, filled by detection Electrical connection signal, AC network electricity system and the relevant information of car load battery management, use two-way DC/AC module 50 and enter Row controlled rectification function, in conjunction with two-way DC/DC module 30, can realize single-phase the three-phase electricity charging to electrokinetic cell 10.
(3) off-network band carries function (V to L): this active bleed-off system receives instrument V to L instruction, first sentences Disconnected power battery charged state SOC, whether in dischargeable range, if allowing electric discharge, selects output further according to instruction Electricity system, according to the rated current of charge-discharge connecting device, intelligent selection output peak power output given control parameter, System enters control flow.First controller module 80 controls adhesive threephase switch K8, catalyst K10, according to electricity Cell voltage and given output voltage, send the two-way DC/DC module 30 of pwm signal control and be adjusted voltage, Flowing to 50 DC inverters of two-way DC/AC module after reaching desired value is alternating current, is inserted by special charging Seat can directly be powered for electrical equipment.In the process, controller module 80 is carried out according to voltage sample 183 feedback Regulation, it is ensured that payload security works reliably.
I.e. saying, system electrification, when receiving V to L control instruction and the output electrical system requirement of instrument, detection charging is even Connect signal and the relevant information of car load battery management, carry out DC/DC voltage conversion according to the voltage of battery, use two-way DC/AC module 50 carries out ac converter function, output stabilized single phase three-phase alternating voltage.
(4) grid-connected function (V to G): this active bleed-off system receives instrument V to G instruction, first determines whether to move Power battery SOC, whether in dischargeable range, if allowing electric discharge, selects output electrical system further according to instruction, according to filling The rated current of electric discharge attachment means, intelligent selection output peak power output the given parameter that controls, active is released and is System enters control flow.First controller module 80 controls adhesive threephase switch K8, catalyst K10, according to battery Voltage and given output voltage, send the two-way DC/DC module 30 of pwm signal control and be adjusted voltage, Be alternating current through 50 DC inverters of two-way DC/AC module, according to preselected discharge current desired value and The phase current of current sample 184 feedback, carries out the electric current loop regulation of closed loop, it is achieved grid-connected to whole active bleed-off system Electric discharge.
It is to say, actively bleed-off system powers on, when receiving the V to G control instruction of instrument, detection charging connection letter Number, AC network electricity system and the relevant information of car load battery management, carry out DC/DC voltage conversion according to the voltage of battery, Use two-way DC/AC module 50 and carry out ac converter, it is achieved single-phase three-phase vehicle to electrical network discharging function.
(5) vehicle is to Vehicular charging function (V to V): V to V function needs to use special connection plug, when Actively bleed-off system detects that charging connection signal CC is effective, and detects that its level confirms as VTOV special charging Plug, waits meter command.For example, it is assumed that vehicle A charges to vehicle B, then vehicle A is set to discharge condition i.e. Being set to off-network band and carry function, the controller module of vehicle A sends charging connection and charges normal ready message to electricity Pool manager, battery manager controls charging and discharging circuit preliminary filling, sends charging permission, charging contactor adhesive after completing Message is to controller module, and this active bleed-off system carries out discharging function, and sends pwm signal.Vehicle B receives After charging instruction, its system detects CP signal, it is judged that be ready for ready for powered vehicle A, controller module 80 transmission connection normal message are to battery manager, and battery manager completes preliminary filling flow process after receiving instruction, notice controls Device module, the charging of whole active bleed-off system is ready, starts charge function (G to V), finally realizes vehicle pair Fill function.
It is to say, system electrification, when receiving the V to V control instruction of instrument, detection charging connection signal and car load The relevant information of battery management, arranging vehicle is exchange out-put supply state, simulation external charging equipment output CP simultaneously Semiotic function, it is achieved and need the vehicle of charging to interact.This vehicle carries out DC/DC voltage according to the voltage of battery Conversion, use two-way DC/AC module 50 and carry out ac converter, it is achieved single-phase three-phase vehicle to vehicle to filling function.
In one embodiment of the invention, as shown in figure 13, this active bleed-off system is at the end of charging electric vehicle Control flow comprise the steps:
S1301, power supply unit disconnects power switch, stops exchange output, enters step S1305.
S1302, controller module controls to stop charging, unloads, enters next step S1303.
S1303, has unloaded rear breaking inner switch, sends charging end message.
S1304, sends power down request.
S1305, charging terminates.
Wherein, as shown in figure 14, power supply unit 301 is by inserting for the vehicle of plug 302 with electric automobile 1000 303 are connected, thus realize being charged electric automobile 1000.Wherein, the active bleed-off system of electric automobile leads to Cross test point 3 detect CP signal and detect CC signal by test point 4, and power supply unit is detected by test point 1 CP signal and detect CC signal by test point 2.Further, after charging complete, all control to disconnect for plug 302 With the internal switch S2 in vehicle plug 303.
In another embodiment of the present invention, electric automobile can also use multiple active bleed-off system in parallel to power Battery is charged, and actively lets out power battery charging, two of which for example with after two active bleed-off system parallel connections Place system shares a controller module.
In the present embodiment, as shown in figure 15, this charging system for electric automobile includes electrokinetic cell the 10, first charging Road the 401, second charging paths 402 and controller module 80.Wherein, the first charging paths 401 and the second charging Road 402 all includes charging/discharging socket 20, two-way DC/DC module 30, bus capacitor C0, two-way DC/AC module 50, filtration module 103, charge and discharge control module 70 and the second preliminary filling module 106.Further, the first charging paths 401 Fuse FU is also included with the second charging paths 402.Electrokinetic cell 10 is by the first preliminary filling control module 101 and the One charging paths is connected, and electrokinetic cell 10 is connected with the second charging paths also by the first preliminary filling control module 101, control Device module 80 processed is connected with the first charging paths 401 and the second charging paths 402 respectively, wherein controller module 80 During for receiving charging signals, control electrical network right by the first charging paths 401 and the second charging paths 402 respectively Electrokinetic cell 10 is charged.
Additionally, another embodiment of the present invention also proposed the charge control method of a kind of electric vehicle, this charging control Method processed comprises the following steps:
Step S1, controller module detects that the first charging paths is connected with power supply unit by charging/discharging socket, and the When two charging paths are connected with power supply unit by charging/discharging socket, send charging connection signal to battery manager.
Step S2, after battery manager receives the charging connection signal that controller module sends, detects and judges power Battery, the need of charging, when electrokinetic cell needs charging, performs next step.
Step S3, battery manager sends charging signals to controller module.
Step S4, when controller module receives charging signals, controls electrical network respectively by the first charging paths and second Electrokinetic cell is charged by charging paths.
Using charging system for electric automobile and the charge control method thereof of technique scheme, controller module is by controlling Electrokinetic cell is charged by electrical network respectively by the first charging paths and the second charging paths so that the charging of electric motor car Power increases, thus is greatly shortened the charging interval, it is achieved quick charge, has saved time cost.
In an embodiment of the present invention, the above-mentioned active bleed-off system compatibility for electric automobile is in extensive range, has list Phase three-phase handoff functionality, and adapt to country variant electrical network electricity standard.
Specifically, as shown in figure 16, charging/discharging socket 20 has two charging sockets (such as American Standard and Europe superscript) and cuts The function changed.This charging/discharging socket 20 includes single-phase charging socket 501 such as American Standard, three-phase charging socket 502 such as Europe superscript, two high voltage connector K503, K504 compositions.Single-phase charging socket 501 and three-phase charging socket 502 CC, CP and PE share, and L, N phase line of single-phase charging socket 501 passes through catalyst K503, K504 and three-phase A, B of charging socket 503 are connected.When controller module 80 receives single-phase discharge and recharge instruction, control contactor K503, K504 close, and make A, B phase of three-phase charging socket 502 and L, N phase line of single-phase charging socket 501 Conducting, three-phase charging socket 502 does not uses, A, B phase of three-phase charging socket 502 replace single-phase charging to insert L, N phase line of seat 501 is connected with charging plug, and controller module 80 can normally realize single-phase charge function.
Or, as it is shown in figure 5, utilize standard 7 core socket, between N line and B phase line, increase single-phase switch K7, Controller module 80 receives single-phase discharge and recharge instruction, controls single-phase switch K7 adhesive, makes B phase line and N line connect, Used as L, N phase line by A, B phase, connect plug and need to use special connection plug, or its B, C phase does not makes Connection plug.
It is to say, in an embodiment of the present invention, actively bleed-off system will detect electrical network according to controller module 80 Voltage, judges frequency and the single-phase/three-phase of electrical network by calculating, according to calculating information with after showing that electricity is made, and controller mould Block 80, according to the type of charge-discharge plug 20 and electrical network electricity system, selects different control parameters, controls two-way DC/AC Module 50 carries out controlled rectification to alternating voltage, and unidirectional current is adjusted by two-way DC/DC module 30 according to cell voltage Pressure, finally flows to electrokinetic cell 10.
In another example of the present invention, as shown in figure 17, off-network band placing plug is two cores, three cores and four cores Socket, be connected with charging plug, can be with output single-phase, three-phase, the electricity of four phase electricity.
Figure 18 is the structure chart of the power carrier communication system for electric automobile according to further embodiment of the present invention.
As shown in figure 18, this power carrier communication system 2000 being used for electric automobile include multiple control device 110, Vehicle electric power line 120 and multiple power carrier wave communication device 130.
Specifically, multiple control devices 110 are respectively provided with communication interface, and communication interface for example, but is not limited to: serial is led to Letter interface SCI.Vehicle electric power line 120 is powered for multiple control devices 110 and passes through vapour between multiple control device 110 Car electric lines of force 120 carries out communication.Multiple power carrier wave communication devices 103 and multiple control device 110 one_to_one corresponding, Multiple control devices 110 are connected with corresponding power carrier wave communication device 130 by respective communication interface, Duo Ge electricity It is connected by vehicle electric power line 120 between power carrier communication device 130, wherein, multiple power carrier wave communication devices 130 Carrier signal is obtained to be sent to the control device of correspondence after carrier signal being demodulated from vehicle electric power line 120, and Receive the corresponding information controlling device transmission, and will send after modulates information to vehicle electric power line 120.
Shown in Figure 18, multiple control devices 110 include control device 1 to control device N(N >=2, N is whole Number).Corresponding multiple power carrier wave communication device 130 includes electric carrier apparatus 1 to electric carrier apparatus N. Such as, controlling device 1 needs to carry out communication with control device 2, then electric carrier apparatus 1 is from vehicle electric power line 120 Middle acquisition comes from the carrier signal that electric carrier apparatus 2 sends, and this carrier signal comes from control device 2, and by electricity Send to vehicle electric power line 120 after power carrier equipment 2 modulation.
Wherein, as shown in figure 19, each power carrier wave communication device 130 includes bonder 131, the filter being sequentially connected Ripple device 133, amplifier 134 and modem 132.
Further, as shown in figure 20, such as eight power carrier wave communication device 1-8 of multiple power carrier wave communication devices It is connected with gateway 300 by vehicle electric power wire harness 121,122, each power carrier wave communication device and a control device Corresponding.Such as, power carrier wave communication device 1 is corresponding with transmission control device 111, power carrier wave communication device 2 Corresponding with engine control system 112, power carrier wave communication device 3 is corresponding with driving hanger, power carrier Communication device 4 is corresponding with air conditioning control device 114, and power carrier wave communication device 5 is corresponding with air bag 115, Power carrier wave communication device 6 shows that with instrument 116 is corresponding, power carrier wave communication device 7 and fault diagnosis 117 phase Correspondence, power carrier wave communication device 8 is corresponding with illuminator 118.
In the present embodiment, as shown in figure 21, the method that this power carrier communication system carries out data receiver includes as follows Step:
S2101, system adds and electrically activates, and system program enters the state receiving data from electric lines of force.
S2102, the correctness that has that it's too late of detected carrier signal.If it is, perform step S2103；If it does not, Then perform step S2104.
S2103, starts to receive the data transmitted from electric lines of force, enters next step S2105.
S2104, detects SCI mouth, it is judged that whether SCI mouth has data.If it is, enter next step S2105； If it is not, then return step S2101.
S2105, enters data receiving state.
According to the power carrier communication system for electric automobile of the present embodiment, on the basis not increasing harness in vehicle On, the data transmission between car each control system interior can be realized and share, and utilizing electric lines of force as communication media Power carrier communication, it is to avoid build and invest new communication network, reduces manufacturing cost and maintenance difficulties.
In another embodiment of the present invention, the above-mentioned active bleed-off system for electric automobile uses water-cooled Mode, as shown in figure 22, body structure layout is that the heat radiation of inductance water channel shares with IGBT water channel, well solves Heat radiation and space problem.Body structure layout is divided into upper and lower two-layer, the IGBT radiation water channel back side to dissipate filtration module Heat, makes according to shapes of inductors, is fabricated to inductance groove 601, utilizes the side conduction heat of inductance groove 601, finally leads to Heat is taken away in sluice 602, and inductance utilizes the glue of high thermal conductivity coefficient to be fixed, and adds heat conducting power and whole The mechanical strength of body design.Active bleed-off system in the present embodiment uses water-cooling pattern to dispel the heat, heat radiation effect Fruit is better than under air cooling way, Same Efficieney reducing filtration module volume, reduces the volume of overall actively bleed-off system And weight.
Additionally, the embodiment of another aspect of the present invention also proposed a kind of electric automobile, release including above-mentioned active System.This electric automobile can carry out high-power charging by three-phase or single-phase electricity, facilitates user whenever and wherever possible to electronic Automobile carries out quick charge, has saved time cost, meets the demand of people.
In flow chart or at this, any process described otherwise above or method description are construed as, and expression includes One or more is for realizing the module of code of executable instruction of step of specific logical function or process, fragment Or part, and the scope of the preferred embodiment of the present invention includes other realization, wherein can not by shown or The order discussed, including according to involved function by basic mode simultaneously or in the opposite order, performs function, This should be understood by embodiments of the invention person of ordinary skill in the field.
Represent in flow charts or the logic described otherwise above at this and/or step, for example, it is possible to be considered as to use In the sequencing list of the executable instruction realizing logic function, may be embodied in any computer-readable medium, For instruction execution system, device or equipment (system such as computer based system, including processor or other can With from instruction execution system, device or equipment instruction fetch the system performing instruction) use, or combine these instructions and hold Row system, device or equipment and use.For the purpose of this specification, " computer-readable medium " can be any can comprise, Store, communicate, propagate or transmission procedure for instruction execution system, device or equipment or combines these instructions and performs system System, device or equipment and the device that uses.More specifically example (non-exhaustive list) bag of computer-readable medium Include following: there is the electrical connection section (electronic installation) of one or more wiring, portable computer diskette box (magnetic device), Random-access memory (ram), read only memory (ROM), erasable edit read only memory (EPROM Or flash memory), fiber device, and portable optic disk read only memory (CDROM).It addition, computer Computer-readable recording medium can even is that paper or other the suitable media that can print described program thereon, because can be the most logical Cross and paper or other media are carried out optical scanning, then carry out editing, interpret or carrying out with other suitable methods if desired Process and electronically obtain described program, be then stored in computer storage.
Should be appreciated that each several part of the present invention can realize by hardware, software, firmware or combinations thereof.Upper Stating in embodiment, multiple steps or method in memory and can be performed by suitable instruction execution system with storage Software or firmware realize.Such as, if realized with hardware, with the most the same, can use this Any one or their combination in following technology known to field realize: have for data signal is realized logic The discrete logic of the logic gates of function, has the special IC of suitable combination logic gate circuit, can Programming gate array (PGA), field programmable gate array (FPGA) etc..
Those skilled in the art are appreciated that and realize all or part of step that above-described embodiment method is carried The program that can be by completes to instruct relevant hardware, and described program can be stored in a kind of computer-readable storage In medium, this program upon execution, including one or a combination set of the step of embodiment of the method.
Additionally, each functional unit in each embodiment of the present invention can be integrated in a processing module, it is also possible to It is that unit is individually physically present, it is also possible to two or more unit are integrated in a module.Above-mentioned integrated Module both can realize to use the form of hardware, it would however also be possible to employ the form of software function module realizes.Described integrated If module realize using the form of software function module and as independent production marketing or when using, it is also possible to storage In a computer read/write memory medium.
Storage medium mentioned above can be read only memory, disk or CD etc..
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show Example " or the description of " some examples " etc. means to combine this embodiment or example describes specific features, structure, material or Person's feature is contained at least one embodiment or the example of the present invention.In this manual, the signal to above-mentioned term Property statement be not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or Feature can combine in any one or more embodiments or example in an appropriate manner.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, permissible Understand these embodiments can be carried out without departing from the principles and spirit of the present invention multiple change, amendment, Replacing and modification, the scope of the present invention is limited by claims and equivalent thereof.

Claims (14)

1. the active bleed-off system for electric automobile, it is characterised in that including:
Electrokinetic cell；
Bus capacitor；
Charging/discharging socket；
Two-way DC/DC module, the first DC terminal of described two-way DC/DC module and the other end phase of described electrokinetic cell Even, described second DC terminal of two-way DC/DC module is connected with one end of described electrokinetic cell, wherein, and described first DC terminal is the input of described two-way DC/DC module and the common DC end of output；
Driving and control switch, described one end driving control switch is connected with described electrokinetic cell one end, and described driving controls The other end of switch is connected with the 3rd DC terminal of described two-way DC/DC module；
Two-way DC/AC module, the first DC terminal of described two-way DC/AC module controls another of switch with described driving End is connected, and described second DC terminal of two-way DC/AC module is connected with the other end of described electrokinetic cell；
Motor control switch, one end of described motor control switch is connected with the end that exchanges of described two-way DC/AC module, The other end of described motor control switch is connected with motor；
Charge and discharge control module, one end of described charge and discharge control module exchanges end phase with described two-way DC/AC module Even, the other end of described charge and discharge control module is connected with described charging/discharging socket；
Controller module, described controller module controls switch, motor control switch and charge and discharge control mould with described driving Block is connected, and described controller module drives control for the mode of operation being presently according to described active bleed-off system to described System switch, motor control switch and charge and discharge control module are controlled, and described controller mould after completing charging Block controls described bus capacitor and continues as described power battery charging, and described controller module control after completing electric discharge Make described bus capacitor and continue electric discharge, until the voltage of described bus capacitor is less than the first preset value；And
Leakage current cuts down module, and described leakage current is cut down module and is connected to the first DC terminal of described two-way DC/DC module With between the 3rd DC terminal of described two-way DC/DC module, described leakage current is cut down module and is included the second electric capacity and the 3rd Electric capacity, one end of described second electric capacity is connected with one end of described 3rd electric capacity, and the other end of described second electric capacity is with described First DC terminal of two-way DC/DC module is connected, the other end of described 3rd electric capacity and described two-way DC/DC module 3rd DC terminal is connected, and wherein, has secondary nodal point between described second electric capacity and the 3rd electric capacity.
2. the active bleed-off system for electric automobile as claimed in claim 1, it is characterised in that
After completing charging, described controller module controls described charge and discharge control module and motor control switch disconnects, Control described driving simultaneously and control switch so that described bus capacitor is described power current by described two-way DC/DC module Charge in pond.
3. the active bleed-off system for electric automobile as claimed in claim 1, it is characterised in that
After completing electric discharge, described controller module controls described motor control switch and disconnects, and controls described driving simultaneously Control switch so that the electric capacity in described bus capacitor and described two-way DC/DC module is by described two-way DC/AC mould Block, described charge and discharge control module and described charging/discharging socket carry out discharging so that described bus capacitor is preset less than second Value, wherein, described second preset value is less than described first preset value.
4. the active bleed-off system for electric automobile as claimed in claim 1, it is characterised in that
When the mode of operation that described active bleed-off system is presently in is drive pattern, described controller module controls described Drive to control to switch and close to close described two-way DC/DC module, and control described motor control switch Guan Bi, and Control described charge and discharge control module to disconnect.
5. the active bleed-off system for electric automobile as claimed in claim 4, it is characterised in that
When the mode of operation that described active bleed-off system is presently in is charge and discharge mode, described controller module controls institute State driving control and switch off to start described two-way DC/DC module, and control the disconnection of described motor control switch, with And control described charge and discharge control module Guan Bi to start described two-way DC/AC module.
6. the active bleed-off system for electric automobile as claimed in claim 1, it is characterised in that also include:
First preliminary filling control module, described one end of first preliminary filling control module is connected with one end of described electrokinetic cell, institute Second DC terminal of the other end and described two-way DC/DC module of stating the first preliminary filling control module is connected, described first pre- Fill control module for being pre-charged for the electric capacity in described two-way DC/DC module and bus capacitor, wherein, institute State bus capacitor and be connected to the 3rd straight of the first DC terminal of described two-way DC/DC module and described two-way DC/DC module Between stream end.
7. the active bleed-off system for electric automobile as claimed in claim 6, it is characterised in that described first pre- Fill control module to farther include:
First resistance and the first switch, one end of described first resistance is connected with one end of described first switch, and described first The other end of resistance is connected with one end of described electrokinetic cell, the other end of described first switch and described two-way DC/DC Second DC terminal of module is connected；
Second switch, described first resistance and described first switch are in parallel with described second switch after connecting,
Wherein, described controller module closes at the first switch described in described active bleed-off system startup control system with to described Electric capacity and bus capacitor in two-way DC/DC module are pre-charged, and dynamic with described at the voltage of described bus capacitor When the voltage of power battery becomes preset multiple, control described first switch off control simultaneously described second switch Guan Bi.
8. the active bleed-off system for electric automobile as claimed in claim 1, it is characterised in that described two-way DC/DC module farther includes:
The first switching tube being serially connected and second switch pipe, described in the first switching tube of being serially connected and second switch Guan Lian Being connected between the first DC terminal and the 3rd DC terminal of described two-way DC/DC module, described first switching tube and second is opened Close pipe to be controlled by described controller module, wherein, between described first switching tube and second switch pipe, there is primary nodal point；
First diode, described first diode and described first switching tube reverse parallel connection；
Second diode, described second diode and described second switch pipe reverse parallel connection；
First inductance, one end of described first inductance is connected with described primary nodal point, the other end of described first inductance and institute The one end stating electrokinetic cell is connected；And
First electric capacity, one end of described first electric capacity is connected with the other end of described first inductance, described first electric capacity another One end is connected with the other end of described electrokinetic cell.
9. the active bleed-off system for electric automobile as claimed in claim 1, it is characterised in that also include:
Filtration module, described filtration module is connected between described two-way DC/AC module and described charge and discharge control module.
10. the active bleed-off system for electric automobile as claimed in claim 9, it is characterised in that also include:
Filtering control module, described filtering control module is connected between described secondary nodal point and described filtration module, described Filtering control module is controlled by described controller module, and described controller module is presently at described active bleed-off system Mode of operation is to control described filtering control module during drive pattern to disconnect.
11. as claimed in claim 9 for the active bleed-off system of electric automobile, it is characterised in that also include:
EMI module, described EMI module is connected between described charging/discharging socket and charge and discharge control module.
12. as claimed in claim 11 for the active bleed-off system of electric automobile, it is characterised in that also include:
Second preliminary filling control module, described second preliminary filling module and described charge and discharge control wired in parallel, described second preliminary filling Control module is for being pre-charged the electric capacity in described filtration module.
13. as claimed in claim 1 for the active bleed-off system of electric automobile, it is characterised in that described discharge and recharge Control module farther includes:
Threephase switch and/or single-phase switch, be used for realizing three-phase charging or single-phase charging.
14. 1 kinds of electric automobiles, it is characterised in that include the active bleed-off system as described in any one of claim 1-13.
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