CN106891749A - The control method of electric automobile and its onboard charger and onboard charger - Google Patents
The control method of electric automobile and its onboard charger and onboard charger Download PDFInfo
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- CN106891749A CN106891749A CN201510957046.7A CN201510957046A CN106891749A CN 106891749 A CN106891749 A CN 106891749A CN 201510957046 A CN201510957046 A CN 201510957046A CN 106891749 A CN106891749 A CN 106891749A
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- bridges
- control
- switch pipe
- onboard charger
- electric discharge
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/66—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output with possibility of reversal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Abstract
The invention discloses a kind of electric automobile and its control method of onboard charger and onboard charger, wherein, control method is comprised the following steps：When power battery charging, the charging setting time Tx of control H bridges in the first way and in a second manner charging setting time Ty of control H bridges are obtained；Alternately control is carried out to H bridges according to Tx and Ty carries out temperature equalization control with to first to fourth switching tube；When electrokinetic cell is externally discharged, obtain electric discharge total time TC of control H bridges in the first way and control the electric discharge total time TD of H bridges in a second manner, and judge the relation between TC and TD；According to the mode that the relation selection between TC and TD is controlled to H bridges, temperature equalization control is carried out with to first to fourth switching tube, so that the heating relative equilibrium of first to fourth switching tube in H bridges, improves the working life of H bridge breaker in middle pipes.
Description
Technical field
The present invention relates to electric vehicle engineering field, more particularly to a kind of control method of onboard charger of electric car, one kind
Onboard charger of electric car and a kind of electric automobile.
Background technology
Progress is commercialized along with electric automobile, onboard charger of electric car has turned into one of electric automobile important spare part.
Wherein, by controlling onboard charger to charge vehicle and the method that vehicle externally discharges is had a lot, and it is related
Mostly using the control method of single-phase H bridges in technology, and Bipolar control side is generally comprised using the control method of single-phase H bridges
Method and unipolar control method.
But, during using ambipolar control method, 4 switching tubes in H bridges all in HF switch state, switching loss compared with
Height, the thermal losses of generation is larger；During using unipolar control method, although can solve to a certain extent using bipolarity control
Switching tube thermal losses during method processed, but in always controlling H bridges during vehicle charge or discharge according to fixed form
Four switching tubes, partial switch pipe needs belt current to turn off in H bridges, and the problems of excessive heat of the switching tube of belt current shut-off can not
Effectively solved.
Therefore, no matter using ambipolar control method or unipolar control method, can not effectively solve the switch in H bridges
The heating problem of pipe, influences the working life of switching tube.
The content of the invention
It is contemplated that at least solving one of technical problem in above-mentioned technology to a certain extent.Therefore, of the invention first
Individual purpose is to propose a kind of control method of onboard charger of electric car, enables to first to fourth switch in H bridges
The heating relative equilibrium of pipe, improves the working life of H bridge breaker in middle pipes.
Second object of the present invention is to propose a kind of onboard charger of electric car.Third object of the present invention is to carry
Go out a kind of electric automobile.
To reach above-mentioned purpose, one aspect of the present invention embodiment proposes a kind of control method of onboard charger of electric car,
The onboard charger includes H bridges, and the H bridges are by first switch pipe, second switch pipe, the 3rd switching tube and the 4th switch
Pipe is constituted, and the control method is comprised the following steps：When the onboard charger is every time to the electrokinetic cell of the electric automobile
When being charged, acquisition controls the charging of the H bridges to set time Tx and control the H bridges in a second manner in the first way
Charging set time Ty；Alternately control is carried out to the H bridges according to Tx and Ty to be opened with to the first switch pipe, second
Guan Guan, the 3rd switching tube and the 4th switching tube carry out temperature equalization control；When the electrokinetic cell of the electric automobile is by described
When onboard charger is externally discharged, acquisition controls electric discharge total time TC and in a second manner of the H bridges in the first way
The electric discharge total time TD of the H bridges is controlled, and judges the pass between electric discharge total time TC and electric discharge total time TD
System；The H bridges are controlled according to the relation selection between electric discharge total time TC and electric discharge total time TD
Mode, temperature equalization control is carried out with to the first switch pipe, second switch pipe, the 3rd switching tube and the 4th switching tube.
The control method of onboard charger of electric car according to embodiments of the present invention, when power battery charging, obtains with the
One mode controls the charging setting time Tx of H bridges and controls the charging of H bridges to set time Ty in a second manner, and according to Tx
Alternately control is carried out to H bridges with Ty carries out temperature with to first switch pipe, second switch pipe, the 3rd switching tube and the 4th switching tube
Degree Balance route；When electrokinetic cell discharges, electric discharge total time TC and in a second manner of control H bridges in the first way is obtained
The electric discharge total time TD of H bridges is controlled, and judges the relation between TC and TD, and according to the relation choosing between TC and TD
The mode being controlled to H bridges is selected, is carried out with to first switch pipe, second switch pipe, the 3rd switching tube and the 4th switching tube
Temperature equalization is controlled.So that the heating relative equilibrium of each switching tube, improves the working life of H bridge breaker in middle pipes, enter
And extend the life cycle of onboard charger.
To reach above-mentioned purpose, a kind of onboard charger of electric car that another aspect of the present invention embodiment is proposed, including：H
Bridge, the H bridges are made up of first switch pipe, second switch pipe, the 3rd switching tube and the 4th switching tube；Control module, institute
State when electrokinetic cell of the control module in the onboard charger every time to the electric automobile charges for obtaining with first
Mode controls the charging setting time Tx of the H bridges and controls the charging of the H bridges to set time Ty in a second manner, and
According to Tx and Ty to the H bridges carry out alternately control with to the first switch pipe, second switch pipe, the 3rd switching tube and
4th switching tube carries out temperature equalization control, and external by the onboard charger in the electrokinetic cell of the electric automobile
It is additionally operable to obtain electric discharge total time TC for controlling the H bridges in the first way when being discharged and controls the H in a second manner
The electric discharge total time TD of bridge, and judge the relation between electric discharge total time TC and electric discharge total time TD, Yi Jigen
According to the mode that the relation selection between electric discharge total time TC and electric discharge total time TD is controlled to the H bridges,
Temperature equalization control is carried out with to the first switch pipe, second switch pipe, the 3rd switching tube and the 4th switching tube.
Onboard charger of electric car according to embodiments of the present invention, when power battery charging, control module is obtained with first
Mode control H bridges charging setting time Tx and in a second manner the charging of control H bridges time Ty is set, and according to Tx and
Ty carries out alternately control to H bridges and enters trip temperature with to first switch pipe, second switch pipe, the 3rd switching tube and the 4th switching tube
Balance route, and when electrokinetic cell discharges, control module be additionally operable to obtain control H bridges in the first way electric discharge it is total when
Between TC and control the electric discharge total time TD of H bridges in a second manner, and judge the relation between TC and TD, and according to TC
The mode that relation selection between TD is controlled to H bridges, with to first switch pipe, second switch pipe, the 3rd switching tube
Temperature equalization control is carried out with the 4th switching tube so that the heating relative equilibrium of each switching tube, improve H bridge breaker in middle pipes
Working life, so as to extend the life cycle of onboard charger.
Additionally, embodiments of the invention also proposed a kind of electric automobile, it includes above-mentioned onboard charger of electric car.
The electric automobile of the embodiment of the present invention, when electrokinetic cell is charged and discharged by above-mentioned onboard charger, can
Realization carries out temperature equalization control to the first switch pipe in H bridges, second switch pipe, the 3rd switching tube and the 4th switching tube,
So that the heating relative equilibrium of each switching tube, improves the working life of H bridge breaker in middle pipes, so as to extend onboard charger
Life cycle.
Brief description of the drawings
Figure 1A is the circuit diagram of the onboard charger of electric car according to one embodiment of the invention；
Figure 1B is the circuit diagram of the onboard charger of electric car according to another embodiment of the present invention；
Fig. 1 C are the circuit diagram of the onboard charger of electric car according to another embodiment of the invention；
Fig. 2 is the flow chart of the control method of the onboard charger of electric car according to the embodiment of the present invention；
Fig. 3 is that H bridges are controlled during with to power battery charging according to the first method that uses of one embodiment of the invention
Four control waveform diagrams of switching tube；
Fig. 4 is that H bridges are controlled during with to power battery charging according to the second method that uses of one embodiment of the invention
Four control waveform diagrams of switching tube；
Fig. 5 be according to the present invention one specific embodiment by onboard charger to power battery charging when control flow chart；
Fig. 6 is to be controlled such that electrokinetic cell externally discharges to H bridges according to the use first method of one embodiment of the invention
When four switching tubes control waveform diagram；
Fig. 7 is to be controlled such that electrokinetic cell externally discharges to H bridges according to the use second method of one embodiment of the invention
When four switching tubes control waveform diagram；And
Fig. 8 is control flow when externally being discharged by onboard charger according to one electrokinetic cell of specific embodiment of the present invention
Figure.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein identical from start to finish
Or similar label represents same or similar element or the element with same or like function.Retouched below with reference to accompanying drawing
The embodiment stated is exemplary, it is intended to for explaining the present invention, and be not considered as limiting the invention.
With reference to the accompanying drawings come describe the embodiment of the present invention proposition onboard charger of electric car control method, electronic vapour
Car onboard charger and the electric automobile with the onboard charger.
As shown in figures 1A-c, onboard charger of electric car according to embodiments of the present invention include H bridges, H bridges by
First switch pipe T1, second switch pipe T2, the 3rd switch transistor T 3 and the 4th switch transistor T 4 are constituted.Wherein, such as Figure 1A institutes
Show, the onboard charger of electric car includes the one of the first inductance L1 and the second inductance L2, the first inductance L1 and load
The positive terminal of end or AC network AC is connected, the negative pole end of the other end or AC network AC of the second inductance L2 and load
It is connected；As shown in Figure 1B, the onboard charger of electric car only includes an inductance such as the first inductance L1, the first electricity
Sense L1 is connected with one end of load or the positive terminal of AC network AC；As shown in Figure 1 C, the vehicle-mounted charging of the electric automobile
Device only includes inductance such as first inductance a L1, the first inductance L1 with the other end of load or bearing for AC network AC
It is extreme to be connected.When onboard charger charges to the electrokinetic cell of electric automobile, electricity can be provided by AC network AC
Energy；Can be that grid-connected electric discharge discharges into AC network AC when electrokinetic cell is externally discharged by onboard charger,
It can also be off-network inversion i.e. inversion powering load.
Also, as shown in Fig. 2 the control method of the onboard charger of electric car of the embodiment of the present invention is comprised the following steps：
S1, when electrokinetic cell of the onboard charger every time to electric automobile charges, obtains and controls H bridges in the first way
Charging setting time Tx and in a second manner control H bridges charging set time Ty.
According to one embodiment of present invention, as shown in figure 3, in the first way A control H bridges when, wherein, when supply car
When the power network instantaneous voltage for carrying charger is more than 0, control first switch pipe T1 is in opening state always, and controls second to open
Close pipe T2 and be in off state always, and the 3rd switch transistor T 3 of control and the alternating, complementary of the 4th switch transistor T 4 are turned on and off,
Wherein, when controlling the 3rd switch transistor T 3 and the alternating, complementary of the 4th switch transistor T 4 to turn on and off, the 3rd switch transistor T 3 is controlled
PWM waveform and the 4th switch transistor T 4 PWM waveform it is complementary, and the PWM waveform of the 3rd switch transistor T 3 of control dutycycle
Become again from diminishing greatly big, control the dutycycle of the PWM waveform of the 4th switch transistor T 4 to diminish again greatly from small change；Filled when supply is vehicle-mounted
When the power network instantaneous voltage of electrical equipment is less than 0, control the 3rd switchs T3 and is in opening state always, and controls the 4th switching tube
T4 is in off state always, and control first switch pipe T1 and second switch pipe T2 alternating, complementaries are turned on and off, its
In, when controlling first switch pipe T1 and second switch pipe T2 alternating, complementaries to turn on and off, control first switch pipe T1's
The PWM waveform of PWM waveform and second switch pipe T2 is complementary, and the PWM waveform of control first switch pipe T1 dutycycle from
Diminishing greatly, it is big become again, and the dutycycle of the PWM waveform of control second switch pipe T2 diminishes greatly again from small change.
Also, as shown in figure 4, in a second manner B control H bridges when, wherein, when supply onboard charger power network it is instantaneous
When voltage is more than 0, control second switch pipe T2 is in opening state always, and controls first switch pipe T1 to be in close always
Disconnected state, and the 3rd switch transistor T 3 of control and the alternating, complementary of the 4th switch transistor T 4 are turned on and off, wherein, in control the
When three switch transistor Ts 3 and the alternating, complementary of the 4th switch transistor T 4 are turned on and off, the PWM waveform and the of the 3rd switch transistor T 3 is controlled
The PWM waveform of four switch transistor Ts 4 is complementary, and the dutycycle of the PWM waveform of the 3rd switch transistor T 3 of control diminishes greatly again from small change,
Control the 4th switch transistor T 4 PWM waveform dutycycle from it is big diminish become again it is big；When the power network of supply onboard charger is instantaneously electric
Press during less than 0, the switch transistor T 4 of control the 4th is in and turns off always in opening state always, and the switch transistor T 3 of control the 3rd
State, and control first switch pipe T1 and second switch pipe T2 alternating, complementaries are turned on and off, wherein, in control first
When switch transistor T 1 and second switch pipe T2 alternating, complementaries are turned on and off, the PWM waveform and second of control first switch pipe T1
The PWM waveform of switch transistor T 2 is complementary, and the dutycycle of the PWM waveform of control first switch pipe T1 diminishes greatly again from small change,
The dutycycle of the PWM waveform of control second switch pipe T2 become again big from diminishing greatly.
S2, according to Tx and Ty to H bridges carry out alternately control with to first switch pipe, second switch pipe, the 3rd switching tube and
4th switching tube carries out temperature equalization control.
, wherein it is desired to explanation, during onboard charger is to power battery charging, if only with first
Mode A is controlled to H bridges, and when line voltage instantaneous value is more than 0, first switch pipe T1 keeps open-minded always, the
Two switch transistor Ts 2 are kept turning off always, and the 3rd switch transistor T 3 and the alternating, complementary of the 4th switch transistor T 4 are turned on and off, and
Open in the 3rd switch transistor T 3, induction charging when the 4th switch transistor T 4 is turned off in onboard charger, in the 3rd switch
Inductive discharge when pipe T3 shut-offs, the 4th switch transistor T 4 are opened；When line voltage instantaneous value is less than 0, the 3rd switching tube
T3 keeps open-minded always, and the 4th switch transistor T 4 keeps turning off always, and first switch pipe T1 and second switch pipe T2 replaces
Complementation is turned on and off, and open in first switch pipe T1, electricity when second switch pipe T2 is turned off in onboard charger
Sense is charged, the inductive discharge when first switch pipe T1 shut-offs, second switch pipe T2 are opened.Due to first switch pipe T1
To induction charging when being opened with the 3rd switch transistor T 3, it is larger to open dutycycle, therefore first switch pipe T1, the 3rd switch
Pipe T3 can be overheated.
Similarly, during onboard charger is to power battery charging, if only with second method B to H bridges
It is controlled, when line voltage instantaneous value is more than 0, first switch pipe T1 keeps turning off always, second switch pipe T2
Keep open-minded always, the 3rd switch transistor T 3 and the alternating, complementary of the 4th switch transistor T 4 are turned on and off, and in the 4th switch
Induction charging when pipe T4 is opened, the 3rd switch transistor T 3 is turned off in onboard charger, turn off in the 4th switch transistor T 4,
Inductive discharge when 3rd switch transistor T 3 is opened；When line voltage instantaneous value is less than 0, the 4th switch transistor T 4 keeps always
Open-minded, the 3rd switch transistor T 3 keeps turning off always, first switch pipe T1 and second switch pipe T2 alternating, complementaries open and
Shut-off, and open in second switch pipe T2, induction charging when first switch pipe T1 is turned off in onboard charger,
Inductive discharge when second switch pipe T2 shut-offs, first switch pipe T1 are opened.Because second switch pipe T2 and the 4th is switched
Pipe T4 is to induction charging when opening, and it is larger to open dutycycle, therefore second switch pipe T2, the 4th switch transistor T 4 were understood
Heat.
Therefore, in an embodiment of the present invention, when onboard charger charges to electrokinetic cell every time, Tx is first set
And Ty, then during to power battery charging, car first can be controlled such that to H bridges using first method A
Charger is carried to power battery charging, until reaching Tx to the time that H bridges are controlled using first method A, is switched
Onboard charger is controlled such that to power battery charging to H bridges to using second method B, until using second party
Formula B reaches Ty to the time that H bridges are controlled, and so completes charging cycle (i.e. one charge cycle time
=Tx+Ty), then be switched to onboard charger is controlled such that to power battery charging to H bridges using first method A,
Until reaching Tx to the time that H bridges are controlled using first method A, then switch to using second method B to H
Bridge is controlled such that onboard charger to power battery charging, until H bridges are controlled using second method B
Time reaches Ty ... ..., is so repeated, realize to H bridges carry out alternately control so that realize to first switch pipe,
Second switch pipe, the 3rd switching tube and the 4th switching tube carry out temperature equalization control.Certainly, in the mistake to power battery charging
Cheng Zhong, also first can be controlled such that onboard charger to power battery charging using second method B to H bridges, until
Ty is reached to the time that H bridges are controlled using second method B, is switched to H bridges are controlled using first method A
Make so that onboard charger is to power battery charging, until being reached to the time that H bridges are controlled using first method A
Tx, so completes a charging cycle, and is repeated according to such charging cycle, until power battery charging is complete
Into.
Say, alternately control is carried out to H bridges according to Tx and Ty in above-mentioned steps S2, including：When using first method
When controlling the time of H bridges to reach Tx, H bridges are controlled using second method, until using second method control H bridges
Time reaches Ty；Or when Ty is reached using the time of second method control H bridges, H bridges are carried out using first method
Control, until reaching Tx using the time of first method control H bridges.
According to one embodiment of present invention, charging setting time Tx of control H bridges can be equal in a second manner in the first way
Control the charging of H bridges that time Ty is set.
Specifically, according to one embodiment of present invention, as shown in figure 5, above-mentioned onboard charger of electric car
Control method is comprised the following steps：
Ripple is opened in S501, charging, i.e., it is necessary to output control waveform comes in H bridges when onboard charger is to power battery charging
Switching tube be controlled.
S502, sets Tx and Ty.
S503, is controlled such that onboard charger charges to electrokinetic cell using first method A to H bridges, and
Judge whether this charging terminates in charging process, if it is, terminate flow, if not, return to continue to judge.
Whether S504, judges reach Tx using the time of first method A control H bridges.If it is, performing step S505；
If not, return to step S503.
S505, is controlled such that onboard charger charges to electrokinetic cell using second method B to H bridges, and
Judge whether this charging terminates in charging process, if it is, terminate flow, if not, return to continue to judge.
Whether S506, judges reach Ty using the time of second method B control H bridges.If it is, return performing step S503；
If not, return to step S505.
Therefore, the control method of the onboard charger of electric car of the embodiment of the present invention can make onboard charger every time to power
Ensure first switch pipe, second switch pipe, the 3rd switching tube and the 4th switching tube heating relative equilibrium in battery charging process,
Improve the working life of onboard charger.
S3, when the electrokinetic cell of electric automobile is externally discharged by onboard charger, acquisition controls H in the first way
Electric discharge total time TC of bridge and in a second manner the electric discharge total time TD of control H bridges, and judge electric discharge total time TC with electric discharge
Relation between total time TD.
According to one embodiment of present invention, as shown in fig. 6, in the first way A control H bridges when, wherein, filled when vehicle-mounted
When the external electric discharge instantaneous voltage of electrical equipment is more than 0, control first switch pipe T1 is in opening state always, and controls second to open
Close pipe T2 and be in off state always, and the 3rd switch transistor T 3 of control and the alternating, complementary of the 4th switch transistor T 4 are turned on and off,
Wherein, when controlling the 3rd switch transistor T 3 and the alternating, complementary of the 4th switch transistor T 4 to turn on and off, the 3rd switch transistor T 3 is controlled
PWM waveform and the 4th switch transistor T 4 PWM waveform it is complementary, and the PWM waveform of the 3rd switch transistor T 3 of control dutycycle
Become again from diminishing greatly big, control the dutycycle of the PWM waveform of the 4th switch transistor T 4 to diminish again greatly from small change；Work as onboard charger
External electric discharge instantaneous voltage when being less than 0, the switch transistor T 3 of control the 3rd controls the 4th switching tube in opening state always
T4 is in off state always, and control first switch pipe T1 and second switch pipe T2 alternating, complementaries are turned on and off, its
In, when controlling first switch pipe T1 and second switch pipe T2 alternating, complementaries to turn on and off, control first switch pipe T1's
The PWM waveform of PWM waveform and second switch pipe T2 is complementary, and the PWM waveform of control first switch pipe T1 dutycycle from
Diminishing greatly, it is big become again, and the dutycycle of the PWM waveform of control second switch pipe T2 diminishes greatly again from small change.
Also, as shown in fig. 7, in a second manner B control H bridges when, wherein, when the external electric discharge of onboard charger is instantaneous
When voltage is more than 0, control second switch pipe T2 is in opening state always, and controls first switch pipe T1 to be in close always
Disconnected state, and the 3rd switch transistor T 3 of control and the alternating, complementary of the 4th switch transistor T 4 are turned on and off, wherein, in control the
When three switch transistor Ts 3 and the alternating, complementary of the 4th switch transistor T 4 are turned on and off, the PWM waveform and the of the 3rd switch transistor T 3 is controlled
The PWM waveform of four switch transistor Ts 4 is complementary, and the dutycycle of the PWM waveform of the 3rd switch transistor T 3 of control diminishes greatly again from small change,
Control the 4th switch transistor T 4 PWM waveform dutycycle from it is big diminish become again it is big；When the external electric discharge of onboard charger is instantaneously electric
Press during less than 0, the switch transistor T 4 of control the 4th is in and turns off always in opening state always, and the switch transistor T 3 of control the 3rd
State, and control first switch pipe T1 and second switch pipe T2 alternating, complementaries are turned on and off, wherein, in control first
When switch transistor T 1 and second switch pipe T2 alternating, complementaries are turned on and off, the PWM waveform and second of control first switch pipe T1
The PWM waveform of switch transistor T 2 is complementary, and the dutycycle of the PWM waveform of control first switch pipe T1 diminishes greatly again from small change,
The dutycycle of the PWM waveform of control second switch pipe T2 become again big from diminishing greatly.
S4, according to the relation mode that is controlled to H bridges of selection between electric discharge total time TC and electric discharge total time TD, with
Temperature equalization control is carried out to first switch pipe, second switch pipe, the 3rd switching tube and the 4th switching tube.
, wherein it is desired to explanation, during electrokinetic cell is by onboard charger externally electric discharge, if only adopted
H bridges are controlled with first method A, when external discharge voltage instantaneous value is more than 0, first switch pipe T1 keeps one
Head straight for leading to, second switch pipe T2 keeps turning off always, and the 3rd switch transistor T 3 and the alternating, complementary of the 4th switch transistor T 4 are open-minded
And shut-off, and turn off in the 3rd switch transistor T 3, induction charging when the 4th switch transistor T 4 is opened in onboard charger,
Open in the 3rd switch transistor T 3, inductive discharge when the 4th switch transistor T 4 is turned off；External discharge voltage instantaneous value is less than 0
When, the 3rd switch transistor T 3 keeps open-minded always, and the 4th switch transistor T 4 keeps turning off always, first switch pipe T1 and
The alternating, complementary of two switch transistor T 2 is turned on and off, and first switch pipe T1 shut-off, second switch pipe T2 open when car
The induction charging in charger is carried, is opened in first switch pipe T1, inductive discharge when second switch pipe T2 is turned off.By
To induction charging when second switch pipe T2 and the 4th switch transistor T 4 are opened, so the switches of second switch pipe T2 and the 4th
Pipe T4 belt currents are turned off, and carry out hard switching, therefore second switch pipe T2 and the 4th switch transistor T 4 occur superheating phenomenon.
Similarly, during electrokinetic cell is by onboard charger externally electric discharge, if only with second method B
H bridges are controlled, when external discharge voltage instantaneous value is more than 0, first switch pipe T1 keeps turning off always, second
Switch transistor T 2 keeps open-minded always, and the 3rd switch transistor T 3 and the alternating, complementary of the 4th switch transistor T 4 are turned on and off, and
Induction charging when 4th switch transistor T 4 is turned off, the 3rd switch transistor T 3 is opened in onboard charger, in the 4th switching tube
Inductive discharge when T4 is opened, the 3rd switch transistor T 3 is turned off；When external discharge voltage instantaneous value is less than 0, the 4th switching tube
T4 keeps open-minded always, and the 3rd switch transistor T 3 keeps turning off always, and first switch pipe T1 and second switch pipe T2 replaces
Complementation is turned on and off, and the electricity when second switch pipe T2 shut-offs, first switch pipe T1 are opened in onboard charger
Sense is charged, and is opened in second switch pipe T2, inductive discharge when first switch pipe T1 is turned off.Due to first switch pipe T1
To induction charging when being opened with the 3rd switch transistor T 3, so first switch pipe T1 and the shut-off of the belt current of the 3rd switch transistor T 3,
Hard switching is carried out, therefore first switch pipe T1 and the 3rd switch transistor T 3 occur superheating phenomenon.
Therefore, in an embodiment of the present invention, electrokinetic cell passes through to be controlled such that to H bridges using first method A
When onboard charger externally discharges, time for being controlled to H bridges using first method A of record so that it is available with
First method controls the electric discharge total time TC of H bridges, is then stored；Use second method B to be controlled H bridges with
When electrokinetic cell is externally discharged by onboard charger, the time that record is controlled using second method B to H bridges,
So as to the electric discharge total time TD of the available H bridges of control in a second manner, then stored.Then electric discharge total time is judged
Relation between TC and electric discharge total time TD, finally according to the relation choosing between electric discharge total time TC and electric discharge total time TD
The mode being controlled to H bridges is selected, so as to realize to first switch pipe, second switch pipe, the 3rd switching tube and the 4th switch
Pipe carries out temperature equalization control.
Wherein, the mode being controlled to H bridges according to the relation selection between electric discharge total time TC and electric discharge total time TD,
Specifically include：When total time TC of discharging is more than electric discharge total time TD, selection second method is controlled to H bridges；When putting
When electric total time TC is less than electric discharge total time TD, selection first method is controlled to H bridges；When electric discharge is equal to total time TC
During electric discharge total time TD, selection first method or second method are controlled to H bridges.
That is, before electrokinetic cell is started by the external electric discharge of onboard charger, being obtained with first from storage region
Mode controls electric discharge total time TC of H bridges and controls the electric discharge total time TD of H bridges in a second manner, when then to discharging total
Between TC and electric discharge judged total time TD, determined to control H bridges still to adopt using first method according to judged result
H bridges are controlled with the second control mode.Wherein, just according to fixed form i.e. first method after the mode that chooses of discharging every time
Or second method controls H bridges electrokinetic cell is externally discharged by onboard charger, externally electric discharge is recorded always at the end of electric discharge
Time, for example, when externally electric discharge is using first method control H bridges for this, the electric discharge for externally being recorded at the end of electric discharge is total
Time is that this adds this external discharge time when externally electric discharge starts from the electric discharge total time of storage region acquisition, i.e., every time
Externally electric discharge will update electric discharge total time after terminating, so as to select which kind of mode to control H bridges during convenient next externally electric discharge.
Specifically, according to one embodiment of present invention, as shown in figure 8, above-mentioned onboard charger of electric car
Control method is comprised the following steps：
Ripple is opened in S801, electric discharge, i.e., it is necessary to output control waveform is come to H when electrokinetic cell is externally discharged by onboard charger
Switching tube in bridge is controlled.
S802, reads electric discharge total time TC of A controls H bridges in the first way and B controls the electric discharge of H bridges total in a second manner
Time TD.
Whether S803, judge TC more than TD.If it is, performing step S804；If not, performing step S808.
S804, selection second method B is controlled to H bridges.
S805, electrokinetic cell externally carries out discharge process by onboard charger.
S806, judges whether this external discharge process terminates.If it is, performing step S807；If not, returning
Step S805.
S807, records this external discharge time, from putting that storage region is obtained when starting so as to externally be discharged according to this
Electric total time TD updates electric discharge total time TD plus this external discharge time.
Whether S808, judge TC less than TD.If it is, performing step S809；If not, performing step S813.
S809, selection first method A is controlled to H bridges.
S810, electrokinetic cell externally carries out discharge process by onboard charger.
S811, judges whether this external discharge process terminates.If it is, performing step S812；If not, returning
Step S810.
S812, records this external discharge time, from putting that storage region is obtained when starting so as to externally be discharged according to this
Electric total time TC updates electric discharge total time TC plus this external discharge time.
S813, selection first method A or second method B is controlled to H bridges.
S814, electrokinetic cell externally carries out discharge process by onboard charger.
S815, judges whether this external discharge process terminates.If it is, performing step S816；If not, returning
Step S814.
S816, records this external discharge time.Wherein, if selection first method A is controlled H bridges, so that root
Put to update plus this external discharge time electric discharge total time TC from what storage region was obtained when according to this, externally electric discharge starts
Electric total time TC；If selection second method B is controlled H bridges, from storage when starting so as to externally be discharged according to this
Electric discharge total time TD that region obtains updates electric discharge total time TD plus this external discharge time.
Therefore, it is that H bridges are controlled using first method or second method when externally being discharged every time by record, and records
During using first method electric discharge total time TC and using second method when electric discharge total time TD, then to TC and TD
Between relation judged so that select control H bridges mode, can be in the whole life cycle of onboard charger
The caloric value and overcurrent relative equilibrium of the switch transistor T 1, T2, T3 and T4 in H bridges are inside realized, so can just be increased
Plus the working life of onboard charger, reduce fault rate.
The control method of onboard charger of electric car according to embodiments of the present invention, when power battery charging, obtains with the
One mode controls the charging setting time Tx of H bridges and controls the charging of H bridges to set time Ty in a second manner, and according to Tx
Alternately control is carried out to H bridges with Ty carries out temperature with to first switch pipe, second switch pipe, the 3rd switching tube and the 4th switching tube
Degree Balance route；When electrokinetic cell discharges, electric discharge total time TC and in a second manner of control H bridges in the first way is obtained
The electric discharge total time TD of H bridges is controlled, and judges the relation between TC and TD, and according to the relation choosing between TC and TD
The mode being controlled to H bridges is selected, is carried out with to first switch pipe, second switch pipe, the 3rd switching tube and the 4th switching tube
Temperature equalization is controlled.So that the heating relative equilibrium of each switching tube, improves the working life of H bridge breaker in middle pipes, enter
And extend the life cycle of onboard charger.
As shown in figures 1A-c, onboard charger of electric car according to embodiments of the present invention includes H bridges and control mould
Block such as MCU (Micro Control Unit, microcontroller).Wherein, H bridges are opened by first switch pipe T1, second
Pipe T2, the 3rd switch transistor T 3 and the 4th switch transistor T 4 is closed to constitute.Control module is in onboard charger every time to electric automobile
Charging when electrokinetic cell is charged for obtaining control H bridges in the first way sets time Tx and controls H in a second manner
The charging of bridge sets time Ty, and alternately control is carried out to H bridges with to first switch pipe T1, second switch according to Tx and Ty
Pipe T2, the 3rd switch transistor T 3 and the 4th switch transistor T 4 carry out temperature equalization control, and logical in the electrokinetic cell of electric automobile
Cross and be additionally operable to obtain electric discharge total time TC of control H bridges in the first way when onboard charger is externally discharged and with second party
Formula controls the electric discharge total time TD of H bridges, and judges the relation discharged between total time TC and electric discharge total time TD, Yi Jigen
According to the mode that the relation selection between electric discharge total time TC and electric discharge total time TD is controlled to H bridges, with to first switch
Pipe T1, second switch pipe T2, the 3rd switch transistor T 3 and the 4th switch transistor T 4 carry out temperature equalization control.
According to one embodiment of present invention, when control module carries out alternately control to H bridges according to Tx and Ty, wherein, when
When reaching Tx using the time of first method control H bridges, H bridges are controlled using second method, until using second party
The time of formula control H bridges reaches Ty；Or when Ty is reached using the time of second method control H bridges, using first party
Formula is controlled to H bridges, until reaching Tx using the time of first method control H bridges.
That is, in an embodiment of the present invention, when onboard charger charges to electrokinetic cell every time, controlling mould
Block first sets Tx and Ty, then during to power battery charging, H bridges can be carried out using first method A first
Control so that onboard charger is to power battery charging, until being reached to the time that H bridges are controlled using first method A
To Tx, it is switched to and onboard charger is controlled such that to power battery charging to H bridges using second method B, until
Ty is reached to the time that H bridges are controlled using second method B, (i.e. one charging of a charging cycle is so completed
Circulation time=Tx+Ty), then be switched to and be controlled such that onboard charger to power on H bridges using first method A
Battery charges, until reaching Tx to the time that H bridges are controlled using first method A, then switches to use second
Mode B is controlled such that onboard charger to power battery charging to H bridges, until using second method B to H bridges
The time being controlled reaches Ty ... ..., is so repeated, and realizes carrying out H bridges alternately control, right so as to realize
First switch pipe, second switch pipe, the 3rd switching tube and the 4th switching tube carry out temperature equalization control.Certainly, to power
During battery charges, also first onboard charger can be controlled such that to power electric H bridges using second method B
Pond is charged, until reaching Ty to the time that H bridges are controlled using second method B, is switched to using first method A
Onboard charger is controlled such that to power battery charging to H bridges, until being controlled to H bridges using first method A
The time of system reaches Tx, so completes a charging cycle, and is repeated according to such charging cycle, until dynamic
Power battery charging complete.
Wherein, the charging setting time Tx of control H bridges can be equal to the charging setting of control H bridges in a second manner in the first way
Time Ty.
According to one embodiment of present invention, when control module controls H bridges in the first way, wherein, when supply vehicle-mounted charge
When the power network instantaneous voltage of device is more than 0, control module control first switch pipe T1 is in opening state always, and controls second
Switch transistor T 2 is in off state always, and the 3rd switch transistor T 3 of control and the alternating, complementary of the 4th switch transistor T 4 are opened and closed
It is disconnected, wherein, when controlling the 3rd switch transistor T 3 and the alternating, complementary of the 4th switch transistor T 4 to turn on and off, control the 3rd is switched
The PWM waveform of the PWM waveform of pipe T3 and the 4th switch transistor T 4 is complementary, and controls accounting for for the PWM waveform of the 3rd switch transistor T 3
It is empty bigger than become again from diminishing greatly, control the dutycycle of the PWM waveform of the 4th switch transistor T 4 to diminish again greatly from small change；When supply car
When the power network instantaneous voltage for carrying charger is less than 0, the switch transistor T 3 of control module control the 3rd is controlled in opening state always
The 4th switch transistor T 4 is made to be opened in off state always, and control first switch pipe T1 and second switch pipe T2 alternating, complementaries
It is logical and turn off, wherein, when controlling first switch pipe T1 and second switch pipe T2 alternating, complementaries to turn on and off, control the
The PWM waveform of one switch transistor T 1 and the PWM waveform of second switch pipe T2 are complementary, and control the PWM ripples of first switch pipe T1
The dutycycle of shape become again big from big diminishing, and the dutycycle of the PWM waveform of control second switch pipe T2 diminishes greatly again from small change.
Also, when control module controls H bridges in a second manner, wherein, when the power network instantaneous voltage of supply onboard charger is big
When 0, control module control second switch pipe T2 is in opening state always, and controls first switch pipe T1 to be in always
Off state, and the 3rd switch transistor T 3 of control and the alternating, complementary of the 4th switch transistor T 4 are turned on and off, wherein, in control
When 3rd switch transistor T 3 and the alternating, complementary of the 4th switch transistor T 4 are turned on and off, control the 3rd switch transistor T 3 PWM waveform and
The PWM waveform of the 4th switch transistor T 4 is complementary, and the dutycycle of the PWM waveform of the 3rd switch transistor T 3 of control becomes greatly again from small change
It is small, control the 4th switch transistor T 4 PWM waveform dutycycle from it is big diminish become again it is big；When the power network wink of supply onboard charger
When voltage when being less than 0, the switch transistor T 4 of control module control the 4th controls the 3rd switch transistor T 3 in opening state always
Turned on and off in off state always, and control first switch pipe T1 and second switch pipe T2 alternating, complementaries, wherein,
When controlling first switch pipe T1 and second switch pipe T2 alternating, complementaries to turn on and off, the PWM of control first switch pipe T1
The PWM waveform of waveform and second switch pipe T2 is complementary, and the PWM waveform of control first switch pipe T1 dutycycle from small change
Diminish again greatly, the dutycycle of the PWM waveform of control second switch pipe T2 from it is big diminish become again it is big.
According to one embodiment of present invention, control module is according to the relation between electric discharge total time TC and electric discharge total time TD
During the mode that selection is controlled to H bridges, wherein, when total time TC of discharging is more than electric discharge total time TD, control module
Selection second method is controlled to H bridges；When total time TC of discharging is less than electric discharge total time TD, control module selection the
One mode is controlled to H bridges；When total time TC of discharging electric discharge total time TD is equal to, control module selection first method
Or second method is controlled to H bridges.
That is, in an embodiment of the present invention, control module is controlled such that dynamic using first method A to H bridges
When power battery is externally discharged by onboard charger, the time that record is controlled using first method A to H bridges, from
And the electric discharge total time TC of the available H bridges of control in the first way, then stored；Control module uses second method
When B is controlled such that electrokinetic cell is externally discharged by onboard charger to H bridges, record is using second method B to H
The time that bridge is controlled, so that the electric discharge total time TD of the available H bridges of control in a second manner, is then stored.
Then control module judges the relation between electric discharge total time TC and electric discharge total time TD, finally according to electric discharge total time TC
The mode being controlled to H bridges with the relation selection between electric discharge total time TD, so as to realize opening first switch pipe, second
Guan Guan, the 3rd switching tube and the 4th switching tube carry out temperature equalization control.
According to one embodiment of present invention, when control module controls H bridges in the first way, wherein, when onboard charger
When externally electric discharge instantaneous voltage is more than 0, control module control first switch pipe T1 is in opening state always, and controls second
Switch transistor T 2 is in off state always, and the 3rd switch transistor T 3 of control and the alternating, complementary of the 4th switch transistor T 4 are opened and closed
It is disconnected, wherein, when controlling the 3rd switch transistor T 3 and the alternating, complementary of the 4th switch transistor T 4 to turn on and off, control the 3rd is switched
The PWM waveform of the PWM waveform of pipe T3 and the 4th switch transistor T 4 is complementary, and controls accounting for for the PWM waveform of the 3rd switch transistor T 3
It is empty bigger than become again from diminishing greatly, control the dutycycle of the PWM waveform of the 4th switch transistor T 4 to diminish again greatly from small change；Filled when vehicle-mounted
When the external electric discharge instantaneous voltage of electrical equipment is less than 0, the switch transistor T 3 of control module control the 3rd is controlled in opening state always
The 4th switch transistor T 4 is made to be opened in off state always, and control first switch pipe T1 and second switch pipe T2 alternating, complementaries
It is logical and turn off, wherein, when controlling first switch pipe T1 and second switch pipe T2 alternating, complementaries to turn on and off, control the
The PWM waveform of one switch transistor T 1 and the PWM waveform of second switch pipe T2 are complementary, and control the PWM ripples of first switch pipe T1
The dutycycle of shape become again big from big diminishing, and the dutycycle of the PWM waveform of control second switch pipe T2 diminishes greatly again from small change.
Also, when control module controls H bridges in a second manner, wherein, when the external electric discharge instantaneous voltage of onboard charger is big
When 0, control module control second switch pipe T2 is in opening state always, and controls first switch pipe T1 to be in always
Off state, and the 3rd switch transistor T 3 of control and the alternating, complementary of the 4th switch transistor T 4 are turned on and off, wherein, in control
When 3rd switch transistor T 3 and the alternating, complementary of the 4th switch transistor T 4 are turned on and off, control the 3rd switch transistor T 3 PWM waveform and
The PWM waveform of the 4th switch transistor T 4 is complementary, and the dutycycle of the PWM waveform of the 3rd switch transistor T 3 of control becomes greatly again from small change
It is small, control the 4th switch transistor T 4 PWM waveform dutycycle from it is big diminish become again it is big；When the external electric discharge wink of onboard charger
When voltage when being less than 0, the switch transistor T 4 of control module control the 4th controls the 3rd switch transistor T 3 in opening state always
Turned on and off in off state always, and control first switch pipe T1 and second switch pipe T2 alternating, complementaries, wherein,
When controlling first switch pipe T1 and second switch pipe T2 alternating, complementaries to turn on and off, the PWM of control first switch pipe T1
The PWM waveform of waveform and second switch pipe T2 is complementary, and the PWM waveform of control first switch pipe T1 dutycycle from small change
Diminish again greatly, the dutycycle of the PWM waveform of control second switch pipe T2 from it is big diminish become again it is big.
In an embodiment of the present invention, as shown in Figure 1A or Figure 1B or Fig. 1 C, first switch pipe T1, second switch pipe T2,
3rd switch transistor T 3 and the 4th switch transistor T 4 are IGBT (Insulated Gate Bipolar Transistor, insulation
Grid bipolar transistor), certainly, in other embodiments of the invention, first switch pipe T1, second switch pipe T2,
Three switch transistor Ts 3 and the 4th switch transistor T 4 can also be metal-oxide-semiconductor.
Onboard charger of electric car according to embodiments of the present invention, when power battery charging, control module is obtained with first
Mode control H bridges charging setting time Tx and in a second manner the charging of control H bridges time Ty is set, and according to Tx and
Ty carries out alternately control to H bridges and enters trip temperature with to first switch pipe, second switch pipe, the 3rd switching tube and the 4th switching tube
Balance route, and when electrokinetic cell discharges, control module be additionally operable to obtain control H bridges in the first way electric discharge it is total when
Between TC and control the electric discharge total time TD of H bridges in a second manner, and judge the relation between TC and TD, and according to TC
The mode that relation selection between TD is controlled to H bridges, with to first switch pipe, second switch pipe, the 3rd switching tube
Temperature equalization control is carried out with the 4th switching tube so that the heating relative equilibrium of each switching tube, improve H bridge breaker in middle pipes
Working life, so as to extend the life cycle of onboard charger.
Additionally, embodiments of the invention also proposed a kind of electric automobile, it includes above-mentioned onboard charger of electric car.
The electric automobile of the embodiment of the present invention, when electrokinetic cell is charged and discharged by above-mentioned onboard charger, energy
It is enough to realize carrying out temperature equalization control to the first switch pipe in H bridges, second switch pipe, the 3rd switching tube and the 4th switching tube,
So that the heating relative equilibrium of each switching tube, improves the working life of H bridge breaker in middle pipes, so as to extend onboard charger
Life cycle.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ",
" outward ", the orientation or position relationship of the instruction such as " clockwise ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on
Orientation shown in the drawings or position relationship, are for only for ease of and describe of the invention and simplify description, rather than instruction or hint institute
The device or element of finger must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this hair
Bright limitation.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, " first " is defined, the feature of " second " can be expressed
Or implicitly include at least one this feature.In the description of the invention, " multiple " is meant that at least two, such as two
It is individual, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation "
Should be interpreted broadly Deng term, for example, it may be fixedly connected, or be detachably connected, or integrally；Can be
Mechanically connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two
The connection of individual element internal or two interaction relationships of element, unless otherwise clearly restriction.It is common for this area
For technical staff, above-mentioned term concrete meaning in the present invention can be as the case may be understood.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can
Being the first and second feature directly contacts, or the first and second features pass through intermediary mediate contact.And, the
One feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or
Oblique upper, or fisrt feature level height is merely representative of higher than second feature.Fisrt feature second feature " under ",
" lower section " and " below " can be fisrt feature immediately below second feature or obliquely downward, or to be merely representative of first special
Level height is levied less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. mean to combine the specific features of the embodiment or example description, structure, material or
Feature is contained at least one embodiment of the invention or example.In this manual, to the schematic representation of above-mentioned term
Necessarily it is directed to identical embodiment or example.And, the specific features of description, structure, material or feature can be with
Combined in an appropriate manner in any one or more embodiments or example.Additionally, in the case of not conflicting, ability
The technical staff in domain can enter the feature of the different embodiments or example described in this specification and different embodiments or example
Row is combined and combined.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment be it is exemplary,
It is not considered as limiting the invention, one of ordinary skill in the art within the scope of the invention can be to above-described embodiment
It is changed, changes, replacing and modification.
Claims (13)
1. a kind of control method of onboard charger of electric car, it is characterised in that the onboard charger includes H bridges, institute
H bridges are stated to be made up of first switch pipe, second switch pipe, the 3rd switching tube and the 4th switching tube, the control method include with
Lower step：
When electrokinetic cell of the onboard charger every time to the electric automobile charges, acquisition is controlled in the first way
The charging setting time Tx of the H bridges and control in a second manner the H bridges charging set time Ty；
Alternately control is carried out to the H bridges with to the first switch pipe, second switch pipe, the 3rd switch according to Tx and Ty
Pipe and the 4th switching tube carry out temperature equalization control；
When the electrokinetic cell of the electric automobile is externally discharged by the onboard charger, acquisition is controlled in the first way
Electric discharge total time TC for making the H bridges and the electric discharge total time TD for controlling the H bridges in a second manner, and put described in judgement
Relation between electric total time TC and electric discharge total time TD；
The H bridges are controlled according to the relation selection between electric discharge total time TC and electric discharge total time TD
Mode, temperature equalization control is carried out with to the first switch pipe, second switch pipe, the 3rd switching tube and the 4th switching tube.
2. the control method of onboard charger of electric car as claimed in claim 1, it is characterised in that described according to Tx
Alternately control is carried out to the H bridges with Ty, including：
When the time that the H bridges are controlled using the first method reaches Tx, the H bridges are entered using the second method
Row control, until reaching Ty using the time of the second method control H bridges；Or
When the time that the H bridges are controlled using the second method reaches Ty, the H bridges are entered using the first method
Row control, until reaching Tx using the time of the first method control H bridges.
3. the control method of onboard charger of electric car as claimed in claim 1, it is characterised in that according to the electric discharge
The mode that relation selection between total time TC and electric discharge total time TD is controlled to the H bridges, specifically includes：
When the electric discharge total time TC electric discharge total time TD is more than, the second method is selected to carry out the H bridges
Control；
When the electric discharge total time TC electric discharge total time TD is less than, the first method is selected to carry out the H bridges
Control；
When the electric discharge total time TC electric discharge total time TD is equal to, the first method or the second method are selected
The H bridges are controlled.
4. the control method of the onboard charger of electric car as any one of claim 1-3, it is characterised in that with
When the first method controls the H bridges, wherein,
When supplying the power network instantaneous voltage of the onboard charger more than 0 or the external electric discharge of the onboard charger is instantaneously electric
Press during more than 0, control the first switch pipe in opening state always, and control the second switch pipe to be in and close always
Disconnected state, and control the 3rd switching tube and the 4th switching tube alternating, complementary to turn on and off；
When supplying the power network instantaneous voltage of the onboard charger less than 0 or the external electric discharge of the onboard charger is instantaneously electric
Press during less than 0, control the 3rd switching tube in opening state always, and control the 4th switching tube to be in and close always
Disconnected state, and control the first switch pipe and the second switch pipe alternating, complementary to turn on and off.
5. the control method of the onboard charger of electric car as any one of claim 1-3, it is characterised in that with
When the second method controls the H bridges, wherein,
When supplying the power network instantaneous voltage of the onboard charger more than 0 or the external electric discharge of the onboard charger is instantaneously electric
Press during more than 0, control the second switch pipe in opening state always, and control the first switch pipe to be in and close always
Disconnected state, and control the 3rd switching tube and the 4th switching tube alternating, complementary to turn on and off；
When supplying the power network instantaneous voltage of the onboard charger less than 0 or the external electric discharge of the onboard charger is instantaneously electric
Press during less than 0, control the 4th switching tube in opening state always, and control the 3rd switching tube to be in and close always
Disconnected state, and control the first switch pipe and the second switch pipe alternating, complementary to turn on and off.
6. the control method of onboard charger of electric car as claimed in claim 1, it is characterised in that with the first party
Formula controls the charging setting time Tx of the H bridges to be equal to and sets time Ty with the charging of the second method control H bridges.
7. a kind of onboard charger of electric car, it is characterised in that including：
H bridges, the H bridges are made up of first switch pipe, second switch pipe, the 3rd switching tube and the 4th switching tube；
Control module, the control module charges to the electrokinetic cell of the electric automobile every time in the onboard charger
When control the charging setting time Tx of the H bridges in the first way and control the charging of the H bridges in a second manner for obtaining
Setting time Ty, and according to Tx and Ty to the H bridges carry out alternately control with to the first switch pipe, second switch pipe,
3rd switching tube and the 4th switching tube carry out temperature equalization control, and electrokinetic cell in the electric automobile passes through the car
Carry charger and be additionally operable to obtain electric discharge total time TC for controlling the H bridges in the first way when externally being discharged and with second party
Formula controls the electric discharge total time TD of the H bridges, and judges between electric discharge total time TC and electric discharge total time TD
Relation, and the H bridges are carried out according to the relation selection between electric discharge total time TC and electric discharge total time TD
The mode of control, temperature equalization is carried out with to the first switch pipe, second switch pipe, the 3rd switching tube and the 4th switching tube
Control.
8. onboard charger of electric car as claimed in claim 7, it is characterised in that the control module according to Tx and
When Ty carries out alternately control to the H bridges, wherein,
When the time that the H bridges are controlled using the first method reaches Tx, the H bridges are entered using the second method
Row control, until reaching Ty using the time of the second method control H bridges；Or
When the time that the H bridges are controlled using the second method reaches Ty, the H bridges are entered using the first method
Row control, until reaching Tx using the time of the first method control H bridges.
9. onboard charger of electric car as claimed in claim 7, it is characterised in that the control module is put according to
During the mode that the relation selection between electric total time TC and electric discharge total time TD is controlled to the H bridges, wherein,
When the electric discharge total time TC electric discharge total time TD is more than, the control module selects the second method pair
The H bridges are controlled；
When the electric discharge total time TC electric discharge total time TD is less than, the control module selects the first method pair
The H bridges are controlled；
When the electric discharge total time TC electric discharge total time TD is equal to, the control module selection first method or
The second method is controlled to the H bridges.
10. onboard charger of electric car as claimed in any one of claims 7-9, it is characterised in that the control mould
When block controls the H bridges with the first method, wherein,
When supplying the power network instantaneous voltage of the onboard charger more than 0 or the external electric discharge of the onboard charger is instantaneously electric
When pressure is more than 0, the control module controls the first switch pipe to be in opening state always, and controls the second switch
Pipe is in off state always, and controls the 3rd switching tube and the 4th switching tube alternating, complementary to turn on and off；
When supplying the power network instantaneous voltage of the onboard charger less than 0 or the external electric discharge of the onboard charger is instantaneously electric
When pressure is less than 0, the control module controls the 3rd switching tube to be in opening state always, and controls the 4th switch
Pipe is in off state always, and controls the first switch pipe and the second switch pipe alternating, complementary to turn on and off.
11. onboard charger of electric car as claimed in any one of claims 7-9, it is characterised in that the control mould
When block controls the H bridges with the second method, wherein,
When supplying the power network instantaneous voltage of the onboard charger more than 0 or the external electric discharge of the onboard charger is instantaneously electric
When pressure is more than 0, the control module controls the second switch pipe to be in opening state always, and controls the first switch
Pipe is in off state always, and controls the 3rd switching tube and the 4th switching tube alternating, complementary to turn on and off；
When supplying the power network instantaneous voltage of the onboard charger less than 0 or the external electric discharge of the onboard charger is instantaneously electric
When pressure is less than 0, the control module controls the 4th switching tube to be in opening state always, and controls the 3rd switch
Pipe is in off state always, and controls the first switch pipe and the second switch pipe alternating, complementary to turn on and off.
12. onboard charger of electric car as any one of claim 7-11, it is characterised in that with described first
Mode controls the charging setting time Tx of the H bridges to be equal to and sets the time with the charging of the second method control H bridges
Ty。
13. a kind of electric automobiles, it is characterised in that vehicle-mounted including the electric automobile as any one of claim 7-12
Charger.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510957046.7A CN106891749B (en) | 2015-12-18 | 2015-12-18 | The control method of electric car and its onboard charger and onboard charger |
| PCT/CN2016/110262 WO2017101830A1 (en) | 2015-12-18 | 2016-12-16 | Electric automobile, on-board charger thereof, and on-board charger control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510957046.7A CN106891749B (en) | 2015-12-18 | 2015-12-18 | The control method of electric car and its onboard charger and onboard charger |
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| Publication Number | Publication Date |
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| CN106891749A true CN106891749A (en) | 2017-06-27 |
| CN106891749B CN106891749B (en) | 2019-09-13 |
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| CN201510957046.7A Active CN106891749B (en) | 2015-12-18 | 2015-12-18 | The control method of electric car and its onboard charger and onboard charger |
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| WO (1) | WO2017101830A1 (en) |
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| CN108155805A (en) * | 2016-12-02 | 2018-06-12 | 比亚迪股份有限公司 | The control method of electric vehicle and its DC-DC converter and DC-DC converter |
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| CN112848931B (en) * | 2019-11-28 | 2022-09-09 | 比亚迪股份有限公司 | Charging method of vehicle-mounted charger, vehicle-mounted charger and vehicle |
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| CN106891749B (en) | 2019-09-13 |
| WO2017101830A1 (en) | 2017-06-22 |
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