CN103187779B - The charging method of electric automobile and charging device - Google Patents

The charging method of electric automobile and charging device Download PDF

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Publication number
CN103187779B
CN103187779B CN201210591058.9A CN201210591058A CN103187779B CN 103187779 B CN103187779 B CN 103187779B CN 201210591058 A CN201210591058 A CN 201210591058A CN 103187779 B CN103187779 B CN 103187779B
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phase
charging
external power
power source
module
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CN103187779A (en
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杜智勇
唐甫
汤哲晴
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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)
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Abstract

The present invention proposes the charging method of a kind of electric automobile, and it comprises the following steps: charging gun inserts the charging socket of electric automobile, and wherein, charging gun is connected with external power source；After charging gun confirms to be connected with charging socket, obtain the first-phase voltage virtual value to third phase voltage of charging socket input；And the virtual value according to first-phase voltage to third phase voltage judges that external power source is single phase poaer supply or three phase mains, and select corresponding charge mode according to judged result。This charging method can identify the type of external power supply automatically, selects different control strategies to realize the charging of different electrical power type, saves the cost building hardware circuit, thus improving compatibility and the reliability of charging system。The invention allows for the charging device of a kind of electric automobile。

Description

The charging method of electric automobile and charging device
Technical field
The present invention relates to electric vehicle engineering field, particularly to the charging device of the charging method of a kind of electric automobile and a kind of electric automobile。
Background technology
Along with the development of science and technology, the electric automobile of environmental protection and energy saving plays the role replacing fuel vehicle, but the universal of electric automobile also faces some problems, wherein high course continuation mileage and efficiently charging technique, it has also become a great problem that electric automobile is promoted。
At present, electric automobile adopts 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 quickly be charged for battery, but the problems such as the cost of great number and bigger floor space make the universal of this infrastructure also face certain difficulty, simultaneously again due to the limited space of vehicle, onboard charger is subject to the restriction of volume and cannot meet charge power。Additionally, traditional charging electric vehicle needs to use special charging cabinet, and traditional charging system for electric automobile needs the different difference circuit that build according to external power supply to realize charging, so needs to expend bigger hardware cost, and the versatility of charging system is not good。。
The charging scheme taked currently on the market has following several:
Scheme (1): as depicted in figs. 1 and 2, vehicle-mounted charge and discharge device in this scheme mainly includes 1 ', six Thyristors of three phase mains transformator composition 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 charging sockets 15 ', 16 ' for adapting to list/three-phase charging, add cost；Motor driving loop comprises inductance L1 ' and the electric capacity C1 ' filtration module formed, and when motor drives, three-phase current module after filtering produces loss, is the waste to battery electric quantity；During program charge/discharge operation, alternating current is carried out rectification/inversion by inverter 13 ', 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 adopts single-phase charging technique mostly, and this technology exists the shortcomings such as charge power is little, charging interval length, hardware volume are relatively big, function singleness, the electric pressure restriction being limited to different regions electrical network and hardware cost height, versatility is not good, reliability is low。
Summary of the invention
The purpose of the present invention is intended at least solve the technological deficiency that above-mentioned hardware cost is high, versatility is not good, reliability is low。
For this, it is an object of the present invention to propose the charging method of a kind of electric automobile, it is possible to automatically identify the type of external power supply, save the cost building hardware circuit, compatible good, reliability is high。
Another object of the present invention also resides in the charging device proposing a kind of electric automobile。
For reaching above-mentioned purpose, the embodiment of one aspect of the present invention proposes the charging method of a kind of electric automobile, comprises the steps: to insert charging gun the charging socket of described electric automobile, and wherein, described charging gun is connected with external power source；After described charging gun confirms to be connected with described charging socket, obtain the first-phase voltage virtual value to third phase voltage of described charging socket input；And the virtual value according to described first-phase voltage to third phase voltage judges that described external power source is single phase poaer supply or three phase mains, and select corresponding charge mode according to judged result。
The charging method of electric automobile according to embodiments of the present invention, can automatically identify the type of external power supply, different control strategies is selected to realize the charging of different electrical power type, save the cost building hardware circuit, save space and cost, and applicable battery operating voltage wide ranges, thus improve compatibility and the reliability of charging system。Additionally, this charging method is simple and reliable, it is easy to carry out。
Further embodiment of the present invention proposes the charging device of a kind of electric automobile, including: charging socket, it is connected with each other for inserting with charging gun, wherein, described charging gun is connected with external power source；Acquisition module, after confirming to be connected with described charging socket at described charging gun, obtains the first-phase voltage virtual value to third phase voltage of described charging socket input；And mode decision module, judge that described external power source is single phase poaer supply or three phase mains for the virtual value according to described first-phase voltage to third phase voltage, and select corresponding charge mode according to judged result。
The charging device of electric automobile according to embodiments of the present invention, can automatically identify the type of external power supply, different control strategies is selected to realize the charging of different electrical power type, it is capable of using civilian or industrial AC network that electric automobile is carried out high power AC charging, save the cost building hardware circuit, and applicable battery operating voltage wide ranges, improves compatibility and the reliability of charging system。
Aspect and advantage that the present invention adds will part provide in the following description, and part will become apparent from the description below, or is recognized by the practice of the present invention。
Accompanying drawing explanation
The present invention above-mentioned and/or that add aspect and advantage will be apparent from easy to understand from the following description of the accompanying drawings of embodiments, 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 dynamical system for electric automobile according to an embodiment of the invention；
Fig. 5 is the topological diagram of dynamical system for electric automobile according to an embodiment of the invention；
Fig. 6 is the further block diagram of dynamical system for electric automobile according to an embodiment of the invention；
Fig. 7 is the block diagram of controller module according to an 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 dynamical system for electric automobile according to an embodiment of the invention；
Figure 10 is the block diagram carrying out drive and control of electric machine function according to an embodiment of the invention for the dynamical system of electric automobile；
Figure 11 starts decision flow chart for the dynamical system charging/discharging function of electric automobile according to an embodiment of the invention；
Figure 12 is according to an embodiment of the invention for the dynamical system of electric automobile control flow chart under charge mode；
Figure 13 is according to an embodiment of the invention for the dynamical system of the electric automobile control flow chart when charging electric vehicle terminates；
Figure 14 is connected circuit diagram according to an embodiment of the invention between electric automobile with power supply unit；
Figure 15 is the schematic diagram adopting two dynamical system parallel connections that electric automobile is charged in accordance with another embodiment of the present invention；
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 with placing plug of the off-network 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；
Figure 22 is the body structure schematic diagram of the dynamical system for electric automobile according to a still further embodiment of the present invention；
Figure 23 is the flow chart of the charging method of electric automobile according to an embodiment of the invention；
Figure 24 is single three-phase decision flow chart of the charging method of electric automobile according to an embodiment of the invention；
Figure 25 is the judging phase order flow chart of the charging method of electric automobile according to embodiments of the present invention；
Figure 26 is the block diagram of the charging device of electric automobile according to an embodiment of the invention；And
Figure 27 is the further block diagram of the charging device of electric automobile according to an embodiment of the invention。
Detailed description of the invention
Being described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of same or like function from start to finish。The embodiment described below with reference to accompanying drawing is illustrative of, and 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。In order to simplify disclosure of the invention, hereinafter parts and setting to specific examples are described。Certainly, they are only merely illustrative, and are not intended to the restriction 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, the relation between itself not indicating discussed various embodiment and/or arranging。Additionally, the example of the various specific technique that the invention provides and material, but those of ordinary skill in the art are it can be appreciated that the use of the property of can be applicable to of other techniques and/or other materials。Additionally, fisrt feature described below second feature it " on " structure can include the first and second features and be formed as the embodiment of directly contact, can also including other feature and form the embodiment between the first and second features, such first and second features are not likely to be direct contact。
In describing the invention, it should be noted that, unless otherwise prescribed and limit, term " installation ", " being connected ", " connection " should be interpreted broadly, for instance, can be mechanically connected or electrical connection, can also be the connection of two element internals, it is possible to be joined directly together, it is also possible to be indirectly connected to by intermediary, for the ordinary skill in the art, it is possible to understand the concrete meaning of above-mentioned term as the case may be。
With reference to as explained below and accompanying drawing, it will be clear that these and other aspects of embodiments of the invention。Describe at these and in accompanying drawing, specifically disclose some particular implementation in embodiments of the invention, representing some modes of the principle implementing embodiments of the invention, but it is to be understood that the scope of embodiments of the invention is not limited。On the contrary, all changes within the scope of embodiments of the invention include falling into attached claims spirit and intension, amendment and equivalent。
In order to the present invention is clearly understood from, first dynamical system and electric automobile to the electric automobile involved by the embodiment of the present invention is introduced below。After the dynamical system and electric automobile introduction of the electric automobile to the embodiment of the present invention, then the charging method and charging device to the electric automobile that the embodiment of the present invention proposes describes in detail。
The dynamical system for electric automobile proposed according to embodiments of the present invention and the electric automobile with this dynamical system are described with reference to the accompanying drawings。
As shown in Figure 4, the dynamical system for electric automobile that one embodiment of the invention proposes includes electrokinetic cell 10, charging/discharging socket 20, two-way DC/DC module 30, drives control switch 40, two-way DC/AC module 50, motor control switch 60, charge and discharge control module 70 and controller module 80。
Wherein, first DC terminal a1 of two-way DC/DC module 30 is connected with the other end of electrokinetic cell 10, second DC terminal a2 of two-way DC/DC module 30 is connected with one end of electrokinetic cell 10, and the first DC terminal a1 is the common DC end that two-way DC/DC module 30 inputs and exports。Drive the one end controlling switch 40 to be connected with one end of electrokinetic cell 10, drive the other end controlling switch 40 to be 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 is connected with driving the other end controlling switch 40, second DC terminal b2 of two-way DC/AC module 50 is connected with the other end of electrokinetic cell 10, one end of motor control switch 60 is connected with the end c that exchanges of two-way DC/AC module 50, and the other end of motor control switch 60 is connected with motor M。One end of charge and discharge control module 70 is connected with the end c that exchanges of two-way DC/AC module 50, and the other end of charge and discharge control module 70 is connected with charging/discharging socket 20。Controller module 80 is connected with driving control switch 40, motor control switch 60 and charge and discharge control module 70, and driving is controlled switch 40, motor control switch 60 and charge and discharge control module 70 for the mode of operation being presently according to dynamical system and is controlled by controller module 80。
Further, in an embodiment of the present invention, the mode of operation that dynamical system is presently in can include drive pattern and charge and discharge mode。When the mode of operation that dynamical system is presently in is drive pattern, controller module 80 controls to drive and controls to switch 40 Guan Bis to close two-way DC/DC module 30, and control motor control switch 60 and close with driven motor M, and control charge and discharge control module 70 and disconnect。When the mode of operation that dynamical system is presently in is charge and discharge mode, controller module 80 controls to drive and controls to switch 40 disconnections to start two-way DC/DC module 30, and control motor control switch 60 disconnect with by motor M remove, and control charge and discharge control module 70 closes, external power source is made normally to be charged for electrokinetic cell 10。First DC terminal a1 and the three DC terminal a3 of two-way DC/DC module 30 is connected with the positive and negative terminal of dc bus。
In one embodiment of the invention, as shown in Figure 5, dynamical system for electric automobile also includes the first preliminary filling control module 101, first preliminary filling controls one end of module 101 and is connected with one end of electrokinetic cell 10, first preliminary filling controls the other end of module 101 and is connected with the second DC terminal a2 of two-way DC/DC module 30, first preliminary filling controls module 101 for being pre-charged for the electric capacity C1 in two-way DC/DC module 30 and bus capacitor C0, wherein, bus capacitor C0 is connected between the first DC terminal a1 of two-way DC/DC module 30 and the 3rd DC terminal a3 of two-way DC/DC module 30。Wherein, the first preliminary filling control module 101 includes the first resistance R1, the first switch K1 and second switch K2。One end of first resistance R1 is connected with first one end switching K1, the other end of the first resistance R1 is connected with one end of electrokinetic cell 10, the other end of the first switch K1 is connected with the second DC terminal a2 of two-way DC/DC module 30, first resistance R1 and the first switch K1 is in parallel with second switch K2 after connecting, wherein, controller module 80 switchs K1 in dynamical system startup control system first and closes so that the electric capacity C1 in two-way DC/DC module 30 and bus capacitor C0 to be pre-charged, 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。
As it is shown in figure 5, two-way DC/DC module 30 farther includes the first switching tube Q1, second switch pipe Q2, the first diode D1, the second diode D2, the first inductance L1 and the first electric capacity C1。Wherein, first switching tube Q1 and second switch pipe Q2 is connected in series with each other, the the first switching tube Q1 being serially connected and second switch pipe Q2 is connected between the first DC terminal a1 and the 3rd DC terminal a3 of two-way DC/DC module 30, the control of the controlled device module 80 of the first switching tube Q1 and second switch pipe Q2, and between the first switching tube Q1 and second switch pipe Q2, there is primary nodal point 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, and the other end of the first inductance L1 is connected with one end of electrokinetic cell 10。One end of first electric capacity C1 is connected with the other end of the first inductance L1, and the other end of the first electric capacity C1 is connected with the other end of electrokinetic cell 10。
In addition, in an embodiment of the present invention, as it is shown in figure 5, this dynamical system being used for electric automobile also includes leakage current cuts down module 102, leakage current is cut down module 102 and is connected between the first DC terminal a1 of two-way DC/DC module 30 and the 3rd DC terminal a3 of two-way DC/DC module 30。Specifically, leakage current is cut down module 102 and is included the second electric capacity C2 and the three electric capacity C3, one end of second electric capacity C2 is connected with one end of the 3rd electric capacity C3, the other end of the second electric capacity C2 is connected with the first DC terminal a1 of two-way DC/DC module 30, the other end of the 3rd electric capacity C3 is connected with the 3rd DC terminal a3 of two-way DC/DC module 30, wherein, 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, it is common to there is the difficult point that leakage current is big。Therefore, this dynamical system increases leakage current at dc bus positive and negative terminal and cuts down module 102, can effectively reduce leakage current。Leakage current is cut down module 102 and is comprised two with type capacitive C2 and C3, it is arranged between dc bus positive and negative terminal and three-phase alternating current midpoint potential, the high frequency electric of generation can be fed back to DC side when native system works, system high-frequency leakage current operationally can be effectively reduced。
In one embodiment of the invention, as it is shown in figure 5, this dynamical system being used for electric automobile also includes filtration module 103, filtering controls module 104, EMI module 105 and the second preliminary filling and controls module 106。
Wherein, filtration module 103 is connected between two-way DC/AC module 50 and charge and discharge control module 70。Specifically, as shown in Figure 5, filtration module 103 includes inductance LA, LB, LC and electric capacity C4, C5, C6, and two-way DC/AC module 50 can include six IGBT, and the junction point between upper and lower two IGBT is connected with filtration module 103 and motor control switch 60 respectively through electrical bus。
As shown in Figure 5, filtering controls module 104 and is connected between secondary nodal point B and filtration module 103, and filtering the control controlled device module 80 of module 104 to control, controller module 80 controls filtering control module 104 and disconnects when the mode of operation that dynamical system is presently in is drive pattern。Wherein, filtering controls module 104 can switch relay for electric capacity, is made up of catalyst K10。EMI module 105 is connected between charging/discharging socket 20 and charge and discharge control module 70。It should be noted that the position of catalyst k10 is only illustrative in Figure 5。In other embodiments of the invention, 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 between two-way DC/AC module 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 controls module 106 for electric capacity C4, C5, the C6 in filtration module 103 is pre-charged。Wherein, the second preliminary filling controls three resistance R that module 106 includes being serially connectedA、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, it is used for realizing three-phase discharge and recharge or single-phase discharge and recharge。
That is, in an embodiment of the present invention, when dynamical system starts, controller module 80 controls the first switch K1 and closes so that the first electric capacity C1 in two-way DC/DC module 30 and bus capacitor C0 to be pre-charged, 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, the critical piece realizing battery low-temp activation technology is formed by two-way DC/DC module 30 and the Large Copacity bus capacitor C0 being connected directly between electrical bus and dc bus, for the electric energy of electrokinetic cell 10 is charged in Large Copacity bus capacitor C0 by two-way DC/DC module 30, again the electric energy stored in Large Copacity bus capacitor C0 is filled back electrokinetic cell 10 (time namely to power battery charging) by two-way DC/DC module 30, make the temperature of electrokinetic cell rise to optimum working temperature scope electrokinetic cell 10 cycle charge-discharge。
When the mode of operation that dynamical system is presently in is drive pattern, controller module 80 controls to drive and controls to switch 40 Guan Bis to close two-way DC/DC module 30, and control motor control switch 60 and close with driven motor M, and control charge and discharge control module 70 and disconnect。It should be noted that, in an embodiment of the present invention, although in Fig. 5, motor control switch 60 includes and inputs, with motor three-phase, three switches being connected, but may also comprise two switches being connected with the biphase input of motor, an even 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。So, the DC inverter by two-way 50 electrokinetic cells 10 of DC/AC module is alternating current and flows to motor M, it is possible to use rotation transformation decoder technique and space vector pulse width modulation (SVPWM) control algolithm control the operation of motor M。
When the mode of operation that dynamical system is presently in is charge and discharge mode, controller module 80 controls to drive and controls to switch 40 disconnections to start two-way DC/DC module 30, and control motor control switch 60 disconnect with by motor M remove, and control charge and discharge control module 70 closes, external power source such as three-phase electricity or single-phase electricity is made can be normally charged for electrokinetic cell 10 by charging/discharging socket 20。Namely say, by detecting the relevant information of charging connection signal, AC network electricity system and car load battery management, use two-way DC/AC module 50 and carry out controlled rectification function, and in conjunction with two-way DC/DC module 30, it may be achieved single-phase the three-phase electricity charging to electrokinetic cell 10。
The dynamical system for electric automobile according to embodiments of the present invention, it is capable of using civilian or industrial AC network that electric automobile is carried out high power AC charging, make the user can whenever and wherever possible efficiently, charge efficiently, save the charging interval, simultaneously without constant-pressure control device and constant-current control device, save space and cost and applicable battery operating voltage wide ranges。
Additionally, in an embodiment of the present invention, as shown in Figure 6, this dynamical system being used for electric automobile can also include high-tension distribution box 90, instrument 107, battery manager 108 and car load signal 109。Wherein, drive control switch 40, first to 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 adopts two high-speed digital video camera chip (DSP1 and DSP2) to be 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 protects signal and IGBT temperature sampled signal etc., and 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 unit output throttle signal in DSP1, busbar voltage sampled signal, brake signal, DC voltage sampled signal, current of electric Hall V phase signals, current of electric Hall W phase signals, charging controls current Hall U phase signals, charging controls current Hall V phase signals, charging controls current Hall W phase signals, DC current hall signal, inverter voltage U phase signals, inverter voltage V phase signals, inverter voltage W phase signals, line voltage U phase signals, line voltage V phase signals, line voltage W phase signals, inversion U phase catches signal, electrical network U phase catches the sampled signals such as signal, the switch control unit output motor A phase switching signal in DSP1, 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., the driver element output A phase PWM1 signal in DSP1, A phase PWM2 signal, B phase PWM1 signal, B phase PWM2 signal, C phase PWM1 signal, C phase PWM2 signal, DC phase PWM1 signal, DC phase PWM2 signal and IPM protect signal etc., and DSP1 also has rotation varying signal output and controls, serial communication, hardware protection, the functions such as CAN communication and gear control。Sampling unit output power supply monitor signal in DSP2, power supply monitoring signal, throttle 1 signal, brake 2 signals, throttle 2 signal, brake 1 signal, motor simulation temperature signal, electricity leakage sensor signal, heat-sink temperature signal, DC side inductor temperature sampled signal, V phase inductance temperature sampling signal, U phase inductance temperature sampling 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 in DSP2, sleep signal, electric discharge pwm signal, battery manager BMS signal, discharge and recharge output control signal, CP signal and CC signal etc., and DSP2 also has CAN communication, Serial Communication Function。
In sum, the dynamical system current collection machine for electric automobile proposed in the embodiment of the present invention drives function, wagon control function, AC charging function, grid-connected function, off-network band load function, vehicle to Vehicular charging function in one。Further, this dynamical 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, realize the functional diversities of system, maximize and save space and cost, improve power density。
Specifically, the function for the dynamical system of electric automobile is simply described below:
1, motor drives function: is alternating current by the DC inverter of two-way 50 electrokinetic cells 10 of DC/AC module and is flowed to motor M, it is possible to use rotation transformation decoder technique and space vector pulse width modulation (SVPWM) control algolithm control the operation of motor M。
It is to say, when this dynamical system obtains electric work, as it is shown in figure 9, this systemic-function judges that flow process comprises the following steps:
S901, dynamical system obtains electric。
S902, it is judged that charging connection signal。If there being charging connection signal, then go to step S903, without then going 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 are judged。When throttle be 0, gear be N shelves, parking brake, charging connection and CC signal effective time (charging/discharging socket 20 is connected to 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, battery manager 108 is notified by CAN communication, battery manager 108 controls high-tension distribution box 90 and C1 and C0 is carried out preliminary filling, controller module 80 detects busbar voltage 187, judge that whether preliminary filling is successful, notify after success that battery manager 108 Guan Bi drives and control switch 40, this system enters drive pattern, whole vehicle information is acquired by controller module 80 simultaneously, is processed by comprehensive descision and motor M is driven。
Carry out drive and control of electric machine function: as shown in Figure 10, controller module 80 sends pwm signal, two-way DC/AC module 50 is controlled, it is alternating current the DC inverter of electrokinetic cell 10 and flows to motor M, controller module 80 resolves rotor-position by rotary transformer, and gathers busbar voltage and motor B, C phase current makes motor M to run accurately。Namely saying, pwm signal is adjusted by motor B, C phase current signal and the feedback information of rotary transformer that controller module 80 is sampled according to current sensor, finally makes motor M to run accurately。
So, by communication module to car load throttle, brake and gear information, it is judged that currently running operating mode, it is achieved the acceleration of vehicle, deceleration and energy feedback function, make car load lower safe and reliable operation under various operating modes, it is ensured that the safety of vehicle, dynamic property and ride comfort。
2, charging/discharging function
(1) charging/discharging function connects confirmation and starts: as shown in figure 11, and the startup of this dynamical system charging/discharging function judges that flow process comprises the steps:
S1101, charge-discharge connecting device and charging/discharging socket physical connection complete, and power supply is normal。
S1102, whether power supply unit detection charging signals CC connects 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, whether controller module detection charging signals CC connects 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 dynamical system control flow under charge mode comprises the steps:
S1201, it is judged that system obtain electric after whether start work completely。If it is, enter step S1202；If it is not, then return step S1201, continue to judge。
S1202, detects CC test point resistance value, it is determined that 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 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。If it is, enter step S1208；If it is not, then enter step S1209。
S1208, it is judged that for outside GB charging pile, does not send PWM ripple in charging process。
S1209, sends PWM ripple to power supply unit。
S1210, it is judged that whether Preset Time detects exchange input in such as 3 seconds normal。If it is, enter 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。
That is, as is illustrated by figs. 11 and 12, after power supply unit and controller module 80 self-inspection fault-free, charging connecting device capacity is determined according to detection CC signal resistance value, detection CP signal determines whether to be fully connected, after charge-discharge connecting device is fully connected confirmation, send that charging connection is normal and the ready message that charges, battery manager 108 controls high-tension distribution box 90 and closes the first switch K1 and carry out preliminary filling, preliminary filling disconnects K1 after completing, adhesive second switch K2, controller module 80 receives BMS charging and allows, second switch K2 adhesive message, discharge and recharge is ready, function can be set by instrument, as follows: AC charging function (GtoV, electrical network is to electric automobile), off-network band load function (VtoL, electric automobile is to load), grid-connected function (VtoG, electric automobile is to electrical network) and vehicle to Vehicular charging function (VtoV, electric automobile is to electric automobile)。
(2) AC charging function (GtoV): this dynamical system receives instrument charging instruction, battery manager 108 allows the rated current of the maximum supply current of maximum charging current, power supply unit and charge-discharge connecting device and charging/discharging socket 20, controller module 80 judges charging current minimum in three, automatically selects charging relevant parameter。And, the alternating currents of power supply unit conveying are sampled by this dynamical system by line voltage sampling 183, controller module 80 calculates alternating current voltage virtual value by sampled value, ac frequency is determined by catching, judge alternating current electricity system according to magnitude of voltage and frequency, choose control parameter according to electrical network electricity system。After determining control parameter, controller module 80 controls the K9 in the second preliminary filling module 106 and filtering controls the catalyst K10 adhesive in module 104, DC side bus capacitor C0 is charged, controller module 80 is sampled by the voltage of 187 pairs of bus capacitors, such as become to control again after preset multiple adhesive threephase switch K8 with the voltage of electrokinetic cell when capacitance voltage reaches the selected parameter that controls, simultaneously switch off K9。Now this dynamical system is according to chosen in advance parameter, controller module 80 sends pwm signal, control two-way DC/AC module 50 and alternating current is carried out rectification, further according to electrokinetic cell voltage, control two-way DC/DC module 30 voltage is adjusted, finally unidirectional current is flowed to electrokinetic cell 10, in the process, the phase current that controller module 80 feeds back according to chosen in advance target charge current and current sample 184, the electric current loop that whole dynamical system carries out closed loop regulates, and electrokinetic cell 10 is charged by final realization。Thus, by detecting the relevant information of charging connection signal, AC network electricity system and car load battery management, use two-way DC/AC module 50 and carry out controlled rectification function, in conjunction with two-way DC/DC module 30, it may be achieved single-phase the three-phase electricity charging to electrokinetic cell 10。
(3) off-network band load function (VtoL): this dynamical system receives instrument VtoL instruction, first determine whether that whether power battery charged state SOC is in dischargeable range, if allowing electric discharge, output electrical system is selected further according to instruction, rated current according to 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 cell voltage and given output voltage, send pwm signal control two-way DC/DC module 30 voltage is adjusted, flowing to 50 DC inverters of two-way DC/AC module after reaching desired value is alternating current, can directly be powered for electrical equipment by special charging socket。In the process, controller module 80 is adjusted according to voltage sample 183 feedback, it is ensured that payload security works reliably。
Namely say, system electrification, when VtoL control instruction and the output electrical system requirement of receiving instrument, the relevant information of detection charging connection signal and car load battery management, voltage according to battery carries out DC/DC voltage conversion, use two-way DC/AC module 50 and carry out ac converter function, output stabilized single phase three-phase alternating voltage。
(4) grid-connected function (VtoG): this dynamical system receives instrument VtoG instruction, first determine whether that whether electrokinetic cell SOC is in dischargeable range, if allowing electric discharge, output electrical system is selected further according to instruction, rated current according to charge-discharge connecting device, intelligent selection output peak power output given control parameter, dynamical system enters control flow。First controller module 80 controls adhesive threephase switch K8, catalyst K10, according to cell voltage and given output voltage, send pwm signal control two-way DC/DC module 30 voltage is adjusted, it is being alternating current through 50 DC inverters of two-way DC/AC module, according to the phase current that chosen in advance discharge current desired value and current sample 184 are fed back, the electric current loop that whole dynamical system carries out closed loop regulates, it is achieved grid-connected electric discharge。
That is, dynamical system powers on, when the VtoG control instruction receiving instrument, the relevant information of detection charging connection signal, AC network electricity system and car load battery management, voltage according to battery carries out DC/DC voltage conversion, 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 (VtoV): VtoV function needs to use special connection plug, when dynamical system detects that charging connection signal CC is effective, and detects that its level confirms as VTOV special charging plug, waits meter command。Such as, assume that vehicle A charges to vehicle B, then vehicle A is set to discharge condition and is namely set to off-network band load function, the controller module of vehicle A sends charging connection and charges normal ready message to battery manager, battery manager controls charging and discharging circuit preliminary filling, sending charging permission, charging contactor adhesive message after completing to controller module, this dynamical system carries out discharging function, and sends pwm signal。After vehicle B receives charging instruction, its system detects CP signal, it is judged as that powered vehicle A is ready for ready, controller module 80 sends and connects normal message to battery manager, battery manager completes preliminary filling flow process, notification controller module after receiving instruction, the charging of whole dynamical system is ready, start charge function (GtoV), finally realize vehicle to filling function。
It is to say, system electrification, when the VtoV control instruction receiving instrument, the relevant information of detection charging connection signal and car load battery management, vehicle is set for exchange out-put supply state, simulation external charging equipment output CP semiotic function simultaneously, it is achieved interact with the vehicle needing charging。This vehicle carries out DC/DC voltage conversion according to the voltage of battery, uses two-way DC/AC module 50 and carries 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 dynamical system control flow when charging electric vehicle terminates comprises the steps:
S1301, power supply unit disconnects power switch, stops exchange output, enters step S1305。
S1302, controller module controls to stop charging, unloads, and 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 being connected with the vehicle plug 303 of electric automobile 1000 for plug 302, thus realizing electric automobile 1000 is charged。Wherein, the dynamical system of electric automobile detects CP signal by test point 3 and detects CC signal by test point 4, and power supply unit detects CP signal by test point 1 and detects CC signal by test point 2。Further, after charging complete, all control to disconnect the internal switch S2 in plug 302 and vehicle plug 303。
In another embodiment of the present invention, electric automobile can also adopt the parallel connection of multiple dynamical system that electrokinetic cell is charged, for instance adopting after two dynamical system parallel connections power battery charging, two of which dynamical 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 paths the 401, second charging paths 402 and controller module 80。Wherein, the first charging paths 401 and the second charging paths 402 all include 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 and the second charging paths 402 also include fuse FU。Electrokinetic cell 10 controls module 101 by the first preliminary filling and is connected with the first charging paths, electrokinetic cell 10 controls module 101 also by the first preliminary filling and is connected with the second charging paths, controller module 80 is connected with the first charging paths 401 and the second charging paths 402 respectively, when wherein controller module 80 is used for receiving charging signals, controls electrical network and respectively through the first charging paths 401 and the second charging paths 402, 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 charge control method 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 when the second charging paths is connected with power supply unit by charging/discharging socket, sends charging connection signal to battery manager。
Step S2, battery manager detects and judges that electrokinetic cell is the need of charging after receiving the charging connection signal that controller module sends, and when electrokinetic cell needs to charge, performs next step。
Step S3, battery manager sends charging signals to controller module。
Step S4, when controller module receives charging signals, controls electrical network and respectively through the first charging paths and the second charging paths, electrokinetic cell is charged。
Adopt charging system for electric automobile and the charge control method thereof of technique scheme, electrokinetic cell is charged respectively through the first charging paths and the second charging paths by controller module by controlling electrical network, the charge power making electric motor car increases, thus being greatly shortened the charging interval, realize quick charge, save time cost。
In an embodiment of the present invention, the above-mentioned dynamical system compatibility for electric automobile is in extensive range, has single-phase three-phase handoff functionality, and adapts to country variant electrical network electricity standard。
Specifically, as shown in figure 16, charging/discharging socket 20 has the function that two charging sockets (such as American Standard and Europe superscript) switch。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 is shared with CC, CP and PE of three-phase charging socket 502, and L, N phase line of single-phase charging socket 501 is connected by A, B of catalyst K503, K504 with three-phase charging socket 503。When controller module 80 receives single-phase discharge and recharge instruction, control contactor K503, K504 close, A, B phase of three-phase charging socket 502 is made to turn on L, N phase line of single-phase charging socket 501, three-phase charging socket 502 does not use, L, N phase line being replaced single-phase charging socket 501 by A, B phase of three-phase charging socket 502 is connected with charging plug, and controller module 80 can normally realize single-phase charge function。
Or, as shown in Figure 5, utilize standard 7 core socket, increasing single-phase switch K7 between N line and B phase line, controller module 80 receives single-phase discharge and recharge instruction, controls single-phase switch K7 adhesive, B phase line and N line is made to 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 make the connection plug used。
That is, in an embodiment of the present invention, dynamical system will detect the voltage of electrical network according to controller module 80, judging frequency and the single-phase/three-phase of electrical network by calculating, according to calculating information with after showing that electricity is made, controller module 80 is according to the type of charge-discharge plug 20 and electrical network electricity system, select different control parameters, controlling two-way DC/AC module 50 and alternating voltage carries out controlled rectification, unidirectional current is carried out pressure regulation according to cell voltage by two-way DC/DC module 30, finally flows to electrokinetic cell 10。
In another example of the present invention, as shown in figure 17, off-network, with the socket that placing plug is two cores, three cores and four cores, is connected with charging plug, it is possible to output single-phase, three-phase, four phase electricity 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 includes 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 is such as but is not limited to: serial communication interface SCI。Vehicle electric power line 120 is powered for multiple control devices 110 and carries out communication by vehicle electric power line 120 between multiple control device 110。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, it is connected by vehicle electric power line 120 between multiple power carrier wave communication devices 130, wherein, multiple power carrier wave communication devices 130 obtain carrier signal to be sent to the control device of correspondence after carrier signal being demodulated from vehicle electric power line 120, and the information that the control device receiving correspondence sends, and will send after modulates information to vehicle electric power line 120。
Shown in Figure 18, multiple control devices 110 include controlling device 1 to controlling device N (N >=2, N is integer)。Corresponding multiple power carrier wave communication device 130 includes electric carrier apparatus 1 to electric carrier apparatus N。Such as, control device 1 to need to carry out communication with control device 2, then electric carrier apparatus 1 obtains from vehicle electric power line 120 and comes from the carrier signal that electric carrier apparatus 2 sends, and this carrier signal comes from control device 2, and sends to vehicle electric power line 120 after being modulated by electric carrier apparatus 2。
Wherein, as shown in figure 19, each power carrier wave communication device 130 includes the bonder 131, wave filter 133, amplifier 134 and the modem 132 that are sequentially connected。
Further, as shown in figure 20, multiple power carrier wave communication devices such as eight power carrier wave communication device 1-8 are connected with gateway 300 by vehicle electric power wire harness 121,122, and each power carrier wave communication device is corresponding with a control device。Such as, power carrier wave communication device 1 is corresponding with transmission control device 111, power carrier wave communication device 2 is corresponding with engine control system 112, power carrier wave communication device 3 is corresponding with driving hanger, power carrier wave communication device 4 is corresponding with air conditioning control device 114, 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 is corresponding with fault diagnosis 117, and 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 comprises the steps:
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 is 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。
The power carrier communication system for electric automobile according to the present embodiment, do not increasing on the basis of harness in vehicle, the data transmission between car each control system interior can be realized and share, and utilize electric lines of force as the power carrier communication of communication media, avoid building and investing new communication network, reduce manufacturing cost and maintenance difficulties。
In another embodiment of the present invention, the above-mentioned dynamical system for electric automobile adopts water-cooling pattern, and 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, filtration module is dispelled the heat by the IGBT radiation water channel back side, make according to shapes of inductors, it is fabricated to inductance groove 601, utilize the side conduction heat of inductance groove 601, taking away heat finally by water channel 602, inductance utilizes the glue of high thermal conductivity coefficient to be fixed, and adds the mechanical strength of heat conducting power and global design。Dynamical system in the present embodiment adopts water-cooling pattern to dispel the heat, and radiating effect is better than air cooling way, can reduce filtration module volume under Same Efficieney, reduces the volume and weight of integral power system。
Additionally, the embodiment of another aspect of the present invention also proposed a kind of electric automobile, including above-mentioned dynamical system。This electric automobile can carry out high-power charging by three-phase or single-phase electricity, facilitates user whenever and wherever possible electric automobile to be carried out quick charge, has saved time cost, meets the demand of people。
Power system of electric automobile and electric automobile to the embodiment of the present invention are described above, below will to how this dynamical system identified that power supply type and judging phase order were introduced before to charging electric vehicle。
The charging method of the electric automobile proposed according to embodiments of the present invention and the charging device of electric automobile are described with reference to the accompanying drawings。
As shown in figure 23, the charging method of the electric automobile that one embodiment of the invention proposes, comprise the steps:
Step S2301, inserts the charging socket of electric automobile by charging gun。Wherein, charging gun is connected with external power source。Wherein, external power source can be three phase mains, it is also possible to for single phase poaer supply。
Step S2302, after charging gun confirms to be connected with charging socket, obtains the first-phase voltage virtual value to third phase voltage of charging socket input。
Specifically, after charging gun inserts the charging socket confirmation connection of electric automobile, namely charging/discharging socket physical connection completes, and obtain the first-phase voltage virtual value to third phase voltage of charging socket input when power supply is normal, wherein, three-phase respectively A phase, B phase and C phase, namely say after charging gun confirms to be connected with charging socket, obtain the virtual value of the A phase of charging socket input, B phase and C phase。
According to the virtual value of first-phase voltage to third phase voltage, step S2303, judges that external power source is single phase poaer supply or three phase mains, and select corresponding charge mode according to judged result。
After execution of step S2302, according to the virtual value of first-phase voltage to third phase voltage, electric automobile judges that the type of external power source is single phase poaer supply or three phase mains, wherein, when the virtual value of first-phase voltage to third phase voltage is all higher than the first preset value, then judge that external power source is three phase mains；When first-phase voltage is more than the first preset value, when second-phase voltage and third phase voltage are less than the second preset value, then judge that external power source is single phase poaer supply, wherein, second preset value is less than the first preset value, such as the second preset value can be the half of the first preset value, and the first preset value can be the minimum that standard gauge is fixed, it is possible to by pre-setting。
Specifically, as shown in figure 24, the flow process type of external power source judged comprises the steps:
Step S2401, inserts charging gun。
Step S2402, detection three-phase voltage also calculates virtual value。
Step S2403, it is judged that whether three-phase voltage is more than the first preset value, if it is, perform step S2406, otherwise performs step S2404。
Step S2404, it is judged that whether B, C phase voltage in three-phase voltage is less than the second preset value, if it is, perform step S2407, otherwise performs step S2405。Needing it is further noted that in this embodiment, A phase, B phase and C phase are only schematic descriptions, are not meant to detect B and C phase, as long as that detects in three-phase is arbitrarily biphase。
Step S2405, fault exits。
Step S2406, enters three-phase charge mode。
Step S2407, enters single-phase charge mode。
Wherein, after judging that external power source is three phase mains, the charging method of above-mentioned electric automobile also includes: open corresponding three-phase bridge rectification module。Specifically, if as it is shown in figure 5, judge that external power source is after three phase mains, then control to open corresponding three-phase bridge rectification module (i.e. two-way AC/DC module 50) and carry out rectification。In other words, if judging, external power source is single phase poaer supply, then close the three-phase bridge rectification module (i.e. two-way AC/DC module 50) of correspondence, specifically, such as close the C phase upper and lower bridge arm in three-phase bridge, meanwhile, as shown in figure 16, by the catalyst K504 adhesive between B phase with N phase, B phase line and N line is made to connect, and by the catalyst K503 adhesive between A phase and L phase, A, B phase use as L, N phase line, constitute the charge circuit of A phase and N phase。
In one embodiment of the invention, after judging that external power source is three phase mains, also include: obtain the first-phase voltage of external power source to the phase sequence between third phase voltage, and whether the phase sequence according to judging phase order external power source is correct。Wherein, when first-phase voltage is rising edge zero point, if the instantaneous voltage value of second-phase voltage is less than zero, and the instantaneous voltage value of third phase voltage is more than zero, then judge that the phase sequence of external power source is correct, otherwise judge the phase sequence mistake of external power source。
Specifically, as shown in figure 25, the flow process of judging phase order is:
Step S2501, inserts charging gun。
Step S2502, catches the zero point of A phase voltage rising edge。
Step S2503, it may be judged whether B phase instantaneous less than zero and C phase voltage more than zero, if it is, perform step S2506, otherwise perform step S2504。Needing it is further noted that in this embodiment, A phase, B phase and C phase are only schematic descriptions, are not meant to first have to detection A phase, and then detection B and C phase, as long as meeting above-mentioned Cleaning Principle。
Step S2504, it may be judged whether B phase instantaneous more than zero and C phase voltage less than zero, if it is, perform step S2507, otherwise perform step S2505。
Step S2505, the system failure exits。
Step S2506, phase sequence is correct。
Step S2507, phase sequence mistake。
Further carry out in example in the present invention, after the phase sequence mistake judging external power source, also include: regulate the strategy phase sequence to external power source by anti-phase and be adjusted。Carry out computing and control in software according to new phase sequence, reach normally charging effect。In the prior art, if phase sequence mistake can be caused after charging gun inserting error, after now needing user to be extracted by charging gun again insertable into。But in the corresponding operator scheme preserving multiple phase sequences of two-way AC/DC module 50 of embodiments of the invention, after the phase sequence of described external power source being detected, can according to the operator scheme of the two-way AC/DC module 50 of the phase sequence corresponding selection of external power source, it is not necessary to user's manual operation。
The charging method of electric automobile according to embodiments of the present invention, can automatically identify the type of external power supply, different control strategies is selected to realize the charging of different electrical power type, save the cost building hardware circuit, save space and cost, and applicable battery operating voltage wide ranges, thus improve compatibility and the reliability of charging system。Additionally, this charging method is simple and reliable, it is easy to carry out。
As shown in figure 26, the charging device 2600 of the electric automobile that further embodiment of the present invention proposes includes charging socket 2610, acquisition module 2620, mode decision module 2630。
Wherein, charging socket 2610 is connected with each other for inserting with charging gun 2640, and charging gun 2640 is connected with external power source 2650。
Acquisition module 2620 is for, after confirming to be connected with charging socket 2610 at charging gun 2640, obtaining the first-phase voltage virtual value to third phase voltage of charging socket 2610 input。Wherein, first-phase is to third phase respectively A phase, B phase and C phase。
For the virtual value according to first-phase voltage to third phase voltage, mode decision module 2630 judges that external power source 2650 is as single phase poaer supply or three phase mains, and select corresponding charge mode according to judged result。Wherein, when the virtual value of first-phase voltage to third phase voltage is all higher than the first preset value, then mode decision module 2630 judges that external power source 2650 is as three phase mains；When first-phase voltage more than the first preset value, second-phase voltage and third phase voltage less than the second preset value time, then mode decision module 2630 judges that external power source 2650 is as single phase poaer supply, and wherein, the second preset value is less than the first preset value。Such as, the second preset value is the half of the first preset value。
In one embodiment of the invention, as shown in figure 27, the charging device 2600 of electric automobile also includes controlling module 2660, and for after judging that external power source 2650 is as three phase mains, the three-phase bridge rectification module (i.e. two-way AC/DC module 50) of unlatching correspondence carries out rectification。In other words, if judging, external power source 2650 is as single phase poaer supply, then close the three-phase bridge rectification module (i.e. two-way AC/DC module 50) of correspondence, specifically, such as close the C phase upper and lower bridge arm in three-phase bridge, meanwhile, as shown in figure 16, by the catalyst K504 adhesive between B phase with N phase, B phase line and N line is made to connect, and by the catalyst K503 adhesive between A phase and L phase, A, B phase use as L, N phase line, constitute the charge circuit of A phase and N phase。
In further embodiment of the present invention, as shown in figure 27, the charging device 2600 of electric automobile also includes phase sequence analysis module 2670, for after judging that external power source 2650 is as three phase mains, obtain the first-phase voltage of external power source 2650 to the phase sequence between third phase voltage, and whether the phase sequence according to judging phase order external power source is correct。
Wherein, when first-phase voltage is rising edge zero point, if the instantaneous voltage value of second-phase voltage is less than zero, and the instantaneous voltage value of third phase voltage is more than zero, then phase sequence analysis module 2670 judges that the phase sequence of external power source is correct, and otherwise phase sequence analysis module 2670 judges the phase sequence mistake of external power source。
In further embodiment of the present invention, as shown in Figure 8, the charging device 2600 of electric automobile also includes adjusting module 2680, for when phase sequence analysis module 2670 judges the phase sequence mistake of external power source, regulating the strategy phase sequence to external power source by anti-phase and be adjusted。
The charging device of electric automobile according to embodiments of the present invention, can automatically identify the type of external power supply, different control strategies is selected to realize the charging of different electrical power type, it is capable of using civilian or industrial AC network that electric automobile is carried out high power AC charging, save the cost building hardware circuit, and applicable battery operating voltage wide ranges, improves compatibility and the reliability of charging system。
Describe in flow chart or in this any process described otherwise above or method and be construed as, represent and include the module of code of executable instruction of one or more step for realizing 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 press order that is shown or that discuss, including according to involved function by basic mode simultaneously or in the opposite order, performing function, this should be understood by embodiments of the invention person of ordinary skill in the field。
Represent in flow charts or in this logic described otherwise above and/or step, such as, it is considered the sequencing list of executable instruction for realizing logic function, may be embodied in any computer-readable medium, use for instruction execution system, device or equipment (such as computer based system, including the system of processor or other can from instruction execution system, device or equipment instruction fetch the system performing instruction), or use in conjunction with these instruction execution systems, device or equipment。For the purpose of this specification, " computer-readable medium " can be any can comprise, store, communicate, propagate or transmission procedure is for instruction execution system, device or equipment or the device that uses in conjunction with these instruction execution systems, device or equipment。The example more specifically (non-exhaustive list) of computer-readable medium includes following: have 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)。Additionally, computer-readable medium can even is that the paper that can print described program thereon or other suitable media, because can such as by paper or other media be carried out optical scanning, then carry out editing, interpreting or be processed to electronically obtain described program with other suitable methods if desired, be then stored in computer storage。
Should be appreciated that each several part of the present invention can realize with hardware, software, firmware or their combination。In the above-described embodiment, multiple steps or method can realize with the storage software or firmware in memory and by suitable instruction execution system execution。Such as, if realized with hardware, the same in another embodiment, can realize by any one in following technology well known in the art or their combination: there is the discrete logic of logic gates for data signal realizes logic function, there is the special IC of suitable combination logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA) etc.。
Those skilled in the art are appreciated that realizing all or part of step that above-described embodiment method carries can be by the hardware that program carrys out instruction relevant and complete, described program can be stored in a kind of computer-readable recording medium, this program upon execution, including the step one or a combination set of 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 be 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 adopt the form of hardware to realize, it would however also be possible to employ the form of software function module realizes。If described integrated module is using the form realization of software function module and as independent production marketing or use, it is also possible to be stored 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, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means in conjunction with this embodiment or example describe are contained at least one embodiment or the example of the present invention。In this manual, the schematic representation of above-mentioned term is not necessarily referring to identical embodiment or example。And, the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiments or example。
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, being appreciated that and these embodiments can be carried out multiple change, amendment, replacement and modification without departing from the principles and spirit of the present invention, the scope of the invention and equivalency。

Claims (8)

1. the charging method of an electric automobile, it is characterised in that comprise the following steps:
Charging gun inserts the charging socket of described electric automobile, and wherein, described charging gun is connected with external power source；
After described charging gun confirms to be connected with described charging socket, obtain the first-phase voltage virtual value to third phase voltage of described charging socket input；
Virtual value according to described first-phase voltage to third phase voltage judges that described external power source is single phase poaer supply or three phase mains, and selects corresponding charge mode according to judged result；
When judging that described external power source is three phase mains, obtain the first-phase voltage of described external power source to the phase sequence between third phase voltage, and whether the phase sequence of external power source is correct according to described judging phase order, and,
When judging the phase sequence mistake of described external power source, regulate the strategy phase sequence to described external power source by anti-phase to be adjusted, wherein, described anti-phase regulates strategy and refers to the operator scheme of the two-way AC/DC module of the phase sequence corresponding selection according to described external power source, and wherein said two-way AC/DC module correspondence preserves the operator scheme of multiple phase sequences。
2. the charging method of electric automobile as claimed in claim 1, it is characterised in that
When the virtual value of described first-phase voltage to third phase voltage is all higher than the first preset value, then judge that described external power source is three phase mains；
When described first-phase voltage more than described first preset value, second-phase voltage and third phase voltage less than the second preset value time, then judge that described external power source is single phase poaer supply, wherein, described second preset value is less than described first preset value。
3. the charging method of electric automobile as claimed in claim 2, it is characterised in that after the described external power source of described judgement is three phase mains, also include:
Open corresponding three-phase bridge rectification module。
4. the charging method of electric automobile as claimed in claim 3, it is characterised in that
When described first-phase voltage is rising edge zero point, if the instantaneous voltage value of described second-phase voltage is less than zero, and the instantaneous voltage value of described third phase voltage is more than zero, then judges that the phase sequence of described external power source is correct, otherwise judge the phase sequence mistake of described external power source。
5. the charging device of an electric automobile, it is characterised in that including:
Charging socket, is connected with each other for inserting with charging gun, and wherein, described charging gun is connected with external power source；
Acquisition module, after confirming to be connected with described charging socket at described charging gun, obtains the first-phase voltage virtual value to third phase voltage of described charging socket input；
For the virtual value according to described first-phase voltage to third phase voltage, mode decision module, judges that described external power source is single phase poaer supply or three phase mains, and select corresponding charge mode according to judged result；
Phase sequence analysis module, for after the described external power source of described judgement is three phase mains, obtains the first-phase voltage of described external power source to the phase sequence between third phase voltage, and whether the phase sequence of external power source is correct according to described judging phase order；And
Adjusting module, during for judging the phase sequence mistake of described external power source at described phase sequence analysis module, regulate the strategy phase sequence to described external power source by anti-phase to be adjusted, wherein, described anti-phase regulates strategy and refers to the operator scheme of the two-way AC/DC module of the phase sequence corresponding selection according to described external power source, and wherein said two-way AC/DC module correspondence preserves the operator scheme of multiple phase sequences。
6. the charging device of electric automobile as claimed in claim 5, it is characterised in that
When the virtual value of described first-phase voltage to third phase voltage is all higher than the first preset value, then described mode decision module judges that described external power source is three phase mains；
When described first-phase voltage more than described first preset value, second-phase voltage and third phase voltage less than the second preset value time, then described mode decision module judges that described external power source is single phase poaer supply, and wherein, described second preset value is less than described first preset value。
7. the charging device of electric automobile as claimed in claim 6, it is characterised in that also include:
Control module, for, after the described external power source of described judgement is three phase mains, opening corresponding three-phase bridge rectification module。
8. the charging device of electric automobile as claimed in claim 7, it is characterised in that
When described first-phase voltage is rising edge zero point, if the instantaneous voltage value of described second-phase voltage is less than zero, and the instantaneous voltage value of described third phase voltage is more than zero, then described phase sequence analysis module judges that the phase sequence of described external power source is correct, and otherwise described phase sequence analysis module judges the phase sequence mistake of described external power source。
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