CN106891739A - 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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- CN106891739A CN106891739A CN201510956184.3A CN201510956184A CN106891739A CN 106891739 A CN106891739 A CN 106891739A CN 201510956184 A CN201510956184 A CN 201510956184A CN 106891739 A CN106891739 A CN 106891739A
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- total time
- bridges
- control
- switch pipe
- onboard charger
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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
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- 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
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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, obtain charging total time TA of control H bridges in the first way and control the charging total time TB of H bridges in a second manner, and judge the relation between TA and TB, and the mode being controlled to H bridges according to the relation selection between TA and TB, carry out temperature equalization control with to first to fourth switching tube；When electrokinetic cell externally discharges, 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, and the mode being controlled to H bridges according to the relation selection between TC and TD, 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 carried out to the electrokinetic cell of the electric automobile
During charging, acquisition controls charging total time TA of the H bridges and controls the charging of the H bridges in a second manner in the first way
Total time TB, and judge the relation between charging total time TA and charging total time TB；Charged always according to described
The mode that relation selection between time TA and charging total time TB is controlled to the H bridges, with to described first
Switching tube, second switch pipe, the 3rd switching tube and the 4th switching tube carry out temperature equalization control；When moving for the electric automobile
When power battery is externally discharged by the onboard charger, acquisition controls the electric discharge total time of the H bridges in the first way
TC and the electric discharge total time TD of the H bridges is controlled in a second manner, and judge that electric discharge total time TC is total with the electric discharge
Relation between time TD；Selected to described according to the relation between electric discharge total time TC and electric discharge total time TD
The mode that H bridges are controlled, is carried out with to the first switch pipe, second switch pipe, the 3rd switching tube and the 4th switching tube
Temperature equalization is controlled.
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 charging total time TA of H bridges and controls the charging total time TB of H bridges in a second manner, and judges TA and TB
Between relation, and according to the relation mode that is controlled to H bridges of selection between TA and TB, with to first switch pipe,
Second switch pipe, the 3rd switching tube and the 4th switching tube carry out temperature equalization control；When electrokinetic cell externally discharges, obtain
Electric discharge total time TC of control H bridges and in a second manner the electric discharge total time TD of control H bridges in the first way, and judge TC
Relation between TD, and the mode being controlled to H bridges according to the relation selection between TC and TD, open with to first
Guan Guan, second switch pipe, the 3rd switching tube and the 4th switching tube carry out temperature equalization control.So that each switching tube
Heating relative equilibrium, improves the working life of H bridge breaker in middle pipes, and then 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 control module is used to obtain in the first way when the onboard charger charges the electrokinetic cell of the electric automobile
Charging total time TA for controlling the H bridges and the charging total time TB for controlling the H bridges in a second manner, and judge described
The relation charged between total time TA and charging total time TB, and according to charging total time TA and the charging
The relation mode that is controlled to the H bridges of selection between total time TB, 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.
Onboard charger of electric car according to embodiments of the present invention, when power battery charging, control module is obtained with first
Mode controls charging total time TA of H bridges and controls the charging total time TB of H bridges in a second manner, and judges TA and TB
Between relation, and according to the relation mode that is controlled to H bridges of selection between TA and TB, with to first switch pipe,
Second switch pipe, the 3rd switching tube and the 4th switching tube carry out temperature equalization control, and when electrokinetic cell externally discharges,
Control module is additionally operable to obtain electric discharge total time TC of control H bridges in the first way and controls the electric discharge of H bridges total in a second manner
Time TD, and judge the relation between TC and TD, and H bridges are controlled according to the relation selection between TC and TD
Mode, carry out temperature equalization control with to first switch pipe, second switch pipe, the 3rd switching tube and the 4th switching tube, make
The heating relative equilibrium of each switching tube is obtained, the working life of H bridge breaker in middle pipes is improved, so as to extend the life of onboard charger
The life cycle.
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.
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 onboard charger charges to the electrokinetic cell of electric automobile, obtains and controls filling for H bridges in the first way
Electric total time TA and in a second manner the charging total time TB of control H bridges, and judge charge total time TA and total time of charging
Relation between TB.
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 the relation mode that is controlled to H bridges of selection charged between total time TA and total time TB of charging, 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 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, onboard charger pair is controlled such that to H bridges using first method A
During power battery charging, the time that record is controlled using first method A to H bridges, so as to can obtain in the first way
The charging total time TA of H bridges is controlled, is then stored；Vehicle-mounted filling is controlled such that to H bridges using second method B
When electrical equipment is to power battery charging, time for being controlled to H bridges using second method B of record so that it is available with
Second method controls the charging total time TB of H bridges, is then stored.When then judging to charge that total time TA is with charging total
Between relation between TB, H bridges are controlled finally according to the relation selection charged between total time TA and total time TB of charging
The mode of system, so as to realize carrying out temperature equalization to first switch pipe, second switch pipe, the 3rd switching tube and the 4th switching tube
Control.
Wherein, the mode being controlled to H bridges according to the relation selection charged between total time TA and total time TB of charging,
Specifically include：When total time TA of charging is more than charging total time TB, selection second method is controlled to H bridges；When filling
When electric total time TA is less than charging total time TB, selection first method is controlled to H bridges；It is equal to total time TA when charging
During charging total time TB, selection first method or second method are controlled to H bridges.
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, reads charging total time TA of A controls H bridges in the first way and B controls the charging of H bridges total in a second manner
Time TB.
Whether S503, judge TA more than TB.If it is, performing step S504；If not, performing step S508.
S504, selection second method B is controlled to H bridges.
S505, onboard charger carries out charging process to electrokinetic cell.
S506, judges whether this charging process terminates.If it is, performing step S507；If not, return to step
S505。
S507, records this charging interval, so as to the charging total time obtained from storage region when being started according to this charging
TB updates total time TB of charging plus this charging interval.
Whether S508, judge TA less than TB.If it is, performing step S509；If not, performing step S513.
S509, selection first method A is controlled to H bridges.
S510, onboard charger carries out charging process to electrokinetic cell.
S511, judges whether this charging process terminates.If it is, performing step S512；If not, return to step
S510。
S512, records this charging interval, so as to the charging total time obtained from storage region when being started according to this charging
TA updates total time TA of charging plus this charging interval.
S513, selection first method A or second method B is controlled to H bridges.
S514, onboard charger carries out charging process to electrokinetic cell.
S515, judges whether this charging process terminates.If it is, performing step S516；If not, return to step
S514。
S516, records this charging interval.Wherein, if selection first method A is controlled H bridges, so that basis
This charging total time TA obtained from storage region when starting of charging adds this charging interval to update total time TA of charging；
If selecting second method B to control H bridges, charging during so as to being started according to this charging from storage region acquisition is total
Time TB updates total time TB of charging plus this charging interval.
Therefore, it is that H bridges are controlled using first method or second method when being charged every time by record, and records use
During first method charge total time TA and using second method when charging total time TB, then between TA and TB
Relation judged, so as to select to control the mode of H bridges, can be real 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 existing H bridges, so can just increase car
The working life of charger is carried, fault rate is reduced.
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
Electric discharge total time TC obtained from storage region when externally electric discharge starts according to this adds this external discharge time to update
Electric discharge total time TC；If selection second method B is controlled H bridges, so as to according to this externally electric discharge starts when from depositing
Electric discharge total time TD that storage area domain 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 remembers
Electric discharge total time TC when record is using first method and electric discharge total time TD during using second method, then to TC and
Relation between TD is judged, so that select to control the mode of H bridges, 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 realized in phase, so just can be with
Increase 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 charging total time TA of H bridges and controls the charging total time TB of H bridges in a second manner, and judges TA and TB
Between relation, and according to the relation mode that is controlled to H bridges of selection between TA and TB, with to first switch pipe,
Second switch pipe, the 3rd switching tube and the 4th switching tube carry out temperature equalization control；When electrokinetic cell externally discharges, obtain
Electric discharge total time TC of control H bridges and in a second manner the electric discharge total time TD of control H bridges in the first way, and judge TC
Relation between TD, and the mode being controlled to H bridges according to the relation selection between TC and TD, open with to first
Guan Guan, second switch pipe, the 3rd switching tube and the 4th switching tube carry out temperature equalization control.So that each switching tube
Heating relative equilibrium, improves the working life of H bridge breaker in middle pipes, and then 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 to the power of electric automobile
For obtaining charging total time TA of control H bridges in the first way and controlling filling for H bridges in a second manner when battery is charged
Electric total time TB, and judge the relation charged between total time TA and total time TB of charging, and according to total time TA of charging
The mode being controlled to H bridges with the relation selection between total time TB of charging, 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, 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, control module is according to the relation charged between total time TA and total time TB of charging
During the mode that selection is controlled to H bridges, wherein, when total time TA of charging is more than charging total time TB, control module
Selection second method is controlled to H bridges；When charge total time TA less than charge total time TB when, control module selection the
One mode is controlled to H bridges；When total time TA of charging is equal to charges total time TB, 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 car using first method A to H bridges
When carrying charger to power battery charging, the time that record is controlled using first method A to H bridges, so as to can obtain
To the charging total time TA for controlling H bridges in the first way, then stored；Control module is using second method B to H
When bridge is controlled such that onboard charger to power battery charging, record is controlled using second method B to H bridges
Time so that the available charging total time TB for controlling H bridges in a second manner, is then stored.Then mould is controlled
Block judges the relation charged between total time TA and total time TB of charging, finally according to total time TA and the total time of charging of charging
The mode that relation selection between TB is controlled to H bridges, so as to realize opening first switch pipe, second switch pipe, the 3rd
Closing pipe and the 4th switching tube carries out temperature equalization control.
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 to power battery charging, control module is obtained with the
One mode controls charging total time TA of H bridges and controls the charging total time TB of H bridges in a second manner, and judges TA and TB
Between relation, and according to the relation mode that is controlled to H bridges of selection between TA and TB, with to first switch pipe,
Second switch pipe, the 3rd switching tube and the 4th switching tube carry out temperature equalization control, and when electrokinetic cell externally discharges,
Control module is additionally operable to obtain electric discharge total time TC of control H bridges in the first way and controls the electric discharge of H bridges total in a second manner
Time TD, and judge the relation between TC and TD, and H bridges are controlled according to the relation selection between TC and TD
Mode, carry out temperature equalization control with to first switch pipe, second switch pipe, the 3rd switching tube and the 4th switching tube, make
The heating relative equilibrium of each switching tube is obtained, the working life of H bridge breaker in middle pipes is improved, so as to extend the life of onboard charger
The life cycle.
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 (12)
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 the onboard charger charges to the electrokinetic cell of the electric automobile, acquisition controls the H in the first way
Charging total time TA of bridge and the charging total time TB of the H bridges is controlled in a second manner, and judge the charging total time
Relation between TA and charging total time TB；
The H bridges are controlled according to the relation selection between charging total time TA and charging total time TB
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；
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 according to the charging
The mode that relation selection between total time TA and charging total time TB is controlled to the H bridges, specifically includes：
When the charging total time TA charging total time TB is more than, the second method is selected to carry out the H bridges
Control；
When the charging total time TA charging total time TB is less than, the first method is selected to carry out the H bridges
Control；
When the charging total time TA charging total time TB is equal to, the first method or the second method are selected
The H bridges are controlled.
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. 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 is used when the onboard charger charges to the electrokinetic cell of the electric automobile
Charging total time TA of the H bridges is controlled in the first way in acquisition and controls the charging total time of the H bridges in a second manner
TB, and judge it is described charging total time TA and charging total time TB between relation, and according to it is described charge it is total when
Between the relation mode that is controlled to the H bridges of selection between TA and charging total time TB, opened with to described first
Guan Guan, second switch pipe, the 3rd switching tube and the 4th switching tube carry out temperature equalization control, and in the electric automobile
Electrokinetic cell is additionally operable to obtain the electric discharge for controlling the H bridges in the first way when externally being discharged by the onboard charger
Total time TC and control the electric discharge total time TD of the H bridges in a second manner, and judge electric discharge total time TC with it is described
Relation between electric discharge total time TD, and according to the relation between electric discharge total time TC and electric discharge total time TD
The mode that selection is controlled to the H bridges, with to the first switch pipe, second switch pipe, the 3rd switching tube and the 4th
Switching tube carries out temperature equalization control.
7. onboard charger of electric car as claimed in claim 6, it is characterised in that the control module is filled according to
During the mode that the relation selection between electric total time TA and charging total time TB is controlled to the H bridges, wherein,
When the charging total time TA charging total time TB is more than, the control module selects the second method pair
The H bridges are controlled；
When the charging total time TA charging total time TB is less than, the control module selects the first method pair
The H bridges are controlled；
When charging total time TA the chargings total time TB is equal to, the control module selection first method or
The second method is controlled to the H bridges.
8. onboard charger of electric car as claimed in claim 6, 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.
9. the onboard charger of electric car as any one of claim 6-8, it is characterised in that the control module
When controlling 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.
10. the onboard charger of electric car as any one of claim 6-8, 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.
11. onboard charger of electric car as any one of claim 6-10, it is characterised in that described first opens
Guan Guan, second switch pipe, the 3rd switching tube and the 4th switching tube are IGBT or metal-oxide-semiconductor.
12. a kind of electric automobiles, it is characterised in that vehicle-mounted including the electric automobile as any one of claim 6-11
Charger.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510956184.3A CN106891739B (en) | 2015-12-18 | 2015-12-18 | The control method of electric car and its onboard charger and onboard charger |
| CN201910295238.4A CN110001455B (en) | 2015-12-18 | 2015-12-18 | Electric automobile, vehicle-mounted charger thereof and control method of vehicle-mounted charger |
| PCT/CN2016/110267 WO2017101834A1 (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 |
|---|---|---|---|
| CN201510956184.3A CN106891739B (en) | 2015-12-18 | 2015-12-18 | The control method of electric car and its onboard charger and onboard charger |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910295238.4A Division CN110001455B (en) | 2015-12-18 | 2015-12-18 | Electric automobile, vehicle-mounted charger thereof and control method of vehicle-mounted charger |
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| CN106891739A true CN106891739A (en) | 2017-06-27 |
| CN106891739B CN106891739B (en) | 2019-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510956184.3A Active CN106891739B (en) | 2015-12-18 | 2015-12-18 | The control method of electric car and its onboard charger and onboard charger |
| CN201910295238.4A Active CN110001455B (en) | 2015-12-18 | 2015-12-18 | Electric automobile, vehicle-mounted charger thereof and control method of vehicle-mounted charger |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910295238.4A Active CN110001455B (en) | 2015-12-18 | 2015-12-18 | Electric automobile, vehicle-mounted charger thereof and control method of vehicle-mounted charger |
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| CN (2) | CN106891739B (en) |
| WO (1) | WO2017101834A1 (en) |
Cited By (1)
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| CN110723004A (en) * | 2018-06-29 | 2020-01-24 | 比亚迪股份有限公司 | Vehicle-mounted charger of electric vehicle, discharge control method of vehicle-mounted charger and electric vehicle |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110731040B (en) | 2017-10-13 | 2022-04-05 | 多伦多大学管理委员会 | Vehicle-mounted bidirectional AC quick charger of electric vehicle |
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Also Published As
| Publication number | Publication date |
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| CN106891739B (en) | 2019-11-08 |
| CN110001455B (en) | 2021-02-23 |
| CN110001455A (en) | 2019-07-12 |
| WO2017101834A1 (en) | 2017-06-22 |
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