CN106891749B - The control method of electric car and its onboard charger and onboard charger - Google Patents
The control method of electric car and its onboard charger and onboard charger Download PDFInfo
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- CN106891749B CN106891749B CN201510957046.7A CN201510957046A CN106891749B CN 106891749 B CN106891749 B CN 106891749B CN 201510957046 A CN201510957046 A CN 201510957046A CN 106891749 B CN106891749 B CN 106891749B
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- electric discharge
- 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
-
- 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
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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 the control methods of a kind of electric car and its onboard charger and onboard charger, wherein, for control method the following steps are included: when power battery charging, time Ty is arranged in the charging for obtaining the charging setting time Tx for controlling H bridge in the first way and controlling H bridge in a second manner；H bridge alternately control to carry out temperature equalization control to first to fourth switching tube according to Tx and Ty；When power battery is externally discharged, obtains the electric discharge total time TC for controlling H bridge in the first way and control the electric discharge total time TD of H bridge in a second manner, and judge the relationship between TC and TD；The mode controlled H bridge is selected according to the relationship between TC and TD, to carry out temperature equalization control to first to fourth switching tube, so that the fever relative equilibrium of first to fourth switching tube in H bridge, improves the working life of switching tube in H bridge.
Description
Technical field
The present invention relates to electric vehicle engineering field, in particular to a kind of control method of onboard charger of electric car,
A kind of onboard charger of electric car and a kind of electric car.
Background technique
Along with electric car be commercialized progress, onboard charger of electric car have become electric car important spare part it
One.
Wherein, have much by controlling the method that onboard charger charges to vehicle and vehicle is made externally to discharge, and
It mostly uses the control method of single-phase H bridge greatly in the related technology, and the control method of single-phase H bridge is used to generally comprise Bipolar control
Method and unipolar control method.
But when using ambipolar control method, 4 switching tubes in H bridge are all in HF switch state, switching loss
Higher, the thermal losses of generation is larger；When using unipolar control method, although can solve to use bipolarity control to a certain extent
Switching tube thermal losses when method processed, but always controlled according to fixed form in H bridge during vehicle charge or discharge
Four switching tubes, partial switch pipe needs belt current to turn off in H bridge, and the problems of excessive heat of the switching tube of belt current shutdown can not obtain
It is solved to effective.
Therefore, regardless of using ambipolar control method or unipolar control method, opening in H bridge is not can effectively solve
The heating problem for closing pipe, influences the working life of switching tube.
Summary of the invention
The present invention is directed to solve one of the technical problem in above-mentioned technology at least to a certain extent.For this purpose, of the invention
First purpose be to propose a kind of control method of onboard charger of electric car, enables to first to fourth in H bridge
The fever relative equilibrium of switching tube improves the working life of switching tube in H bridge.
Second object of the present invention is to propose a kind of onboard charger of electric car.Third object of the present invention exists
In proposing a kind of electric car.
In order to achieve the above objectives, one aspect of the present invention embodiment proposes a kind of controlling party of onboard charger of electric car
Method, the onboard charger include H bridge, and the H bridge is by first switch tube, second switch, third switching tube and the 4th switch
Pipe is constituted, and the control method is the following steps are included: when the onboard charger is every time to the power battery of the electric car
When being charged, obtains the charging setting time Tx for controlling the H bridge in the first way and control the H bridge in a second manner
Charging setting time Ty；According to Tx and Ty to the H bridge carry out alternately control with to the first switch tube, second switch,
Third switching tube and the 4th switching tube carry out temperature equalization control；When the power battery of the electric car vehicle-mounted is filled by described
When electric appliance is externally discharged, obtains electric discharge total time TC for controlling the H bridge in the first way and control institute in a second manner
The electric discharge total time TD of H bridge is stated, and judges the relationship between the electric discharge total time TC and the electric discharge total time TD；According to institute
The relationship stated between electric discharge total time TC and the electric discharge total time TD selects the mode controlled the H bridge, to institute
It states first switch tube, second switch, third switching tube and the 4th switching tube and carries out temperature equalization control.
The control method of onboard charger of electric car according to an embodiment of the present invention is obtained when power battery charging
Time Ty is arranged in the charging setting time Tx for controlling H bridge in the first way and the charging for controlling H bridge in a second manner, and according to Tx
H bridge alternately control to carry out temperature to first switch tube, second switch, third switching tube and the 4th switching tube with Ty
Balance route；When power battery electric discharge, obtains and control electric discharge total time TC of H bridge in the first way and control in a second manner
The electric discharge total time TD of H bridge, and judge the relationship between TC and TD, and according to the relationship selection between TC and TD to H bridge into
The mode of row control, to carry out temperature equalization control to first switch tube, second switch, third switching tube and the 4th switching tube
System.So that the fever relative equilibrium of each switching tube, improves the working life of switching tube in H bridge, and then extend vehicle-mounted fill
The life cycle of electric appliance.
In order to achieve the above objectives, a kind of onboard charger of electric car that another aspect of the present invention embodiment proposes, comprising:
H bridge, the H bridge are made of first switch tube, second switch, third switching tube and the 4th switching tube；Control module, the control
Molding block is when the onboard charger every time charges to the power battery of the electric car for obtaining with first party
Formula controls the charging setting time Tx of the H bridge and controls the charging setting time Ty of the H bridge in a second manner, and according to Tx
The H bridge alternately control to the first switch tube, second switch, third switching tube and the 4th switching tube with Ty
Temperature equalization control is carried out, and when the power battery of the electric car is externally discharged by the onboard charger
The electric discharge for being also used to obtain electric discharge total time TC for controlling the H bridge in the first way and control the H bridge in a second manner is total
Time TD, and judge the relationship between the electric discharge total time TC and the electric discharge total time TD, and total according to the electric discharge
Relationship between time TC and the electric discharge total time TD selects the mode controlled the H bridge, to open described first
Guan Guan, second switch, third switching tube and the 4th switching tube carry out temperature equalization control.
Onboard charger of electric car according to an embodiment of the present invention, when power battery charging, control module obtain with
First method control H bridge charging setting time Tx and in a second manner control H bridge charging be arranged time Ty, and according to Tx with
Ty alternately control to H bridge equal to carry out temperature to first switch tube, second switch, third switching tube and the 4th switching tube
Weighing apparatus control, and in power battery electric discharge, control module is also used to obtain the electric discharge total time TC for controlling H bridge in the first way
The electric discharge total time TD of H bridge is controlled in a second manner, and judges the relationship between TC and TD, and according between TC and TD
Relationship selects the mode controlled H bridge, to first switch tube, second switch, third switching tube and the 4th switching tube
Temperature equalization control is carried out, so that the fever relative equilibrium of each switching tube, improves the working life of switching tube in H bridge, thus
Extend the life cycle of onboard charger.
In addition, the embodiment of the present invention also proposed a kind of electric car comprising the vehicle-mounted charging of above-mentioned electric car
Device.
The electric car of the embodiment of the present invention, when power battery is charged and discharged by above-mentioned onboard charger,
It can be realized and temperature equalization control is carried out to first switch tube, second switch, third switching tube and the 4th switching tube in H bridge
System, so that the fever relative equilibrium of each switching tube, improves the working life of switching tube in H bridge, to extend vehicle-mounted charge
The life cycle of device.
Detailed description of the invention
Figure 1A is the circuit diagram according to the onboard charger of electric car of one embodiment of the invention；
Figure 1B is the circuit diagram according to the onboard charger of electric car of another embodiment of the present invention；
Fig. 1 C is the circuit diagram according to the onboard charger of electric car of another embodiment of the invention；
Fig. 2 is the flow chart according to the control method of the onboard charger of electric car of the embodiment of the present invention；
Fig. 3 is to use first method to control to power battery charging H bridge according to one embodiment of the invention
When four switching tubes control waveform diagram；
Fig. 4 is to use second method to control to power battery charging H bridge according to one embodiment of the invention
When four switching tubes control waveform diagram；
Fig. 5 be according to the present invention one specific embodiment by onboard charger to power battery charging when control stream
Cheng Tu；
Fig. 6 is to be controlled such that power battery is external to H bridge according to the use first method of one embodiment of the invention
The control waveform diagram of four switching tubes when electric discharge；
Fig. 7 is to be controlled such that power battery is external to H bridge according to the use second method of one embodiment of the invention
The control waveform diagram of four switching tubes when electric discharge；And
Fig. 8 is control when externally being discharged according to the power battery of a specific embodiment of the invention by onboard charger
Flow chart.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
With reference to the accompanying drawings come describe proposition of the embodiment of the present invention onboard charger of electric car control method, electronic
Automobile mounted charger and electric car with the onboard charger.
As shown in figures 1A-c, onboard charger of electric car according to an embodiment of the present invention includes H bridge, and H bridge is by first
Switch transistor T 1, second switch T2, third switch transistor T 3 and the 4th switch transistor T 4 are constituted.Wherein, as shown in Figure 1A, the electronic vapour
Vehicle onboard charger includes the first inductance L1 and the second inductance L2, and one end or AC network AC of the first inductance L1 and load are just
Extreme to be connected, the second inductance L2 is connected with the negative pole end of the other end of load or AC network AC；As shown in Figure 1B, the electronic vapour
Vehicle onboard charger only includes an inductance such as the first inductance L1, one end or AC network AC of the first inductance L1 and load
Positive terminal is connected；As shown in Figure 1 C, which only includes an inductance such as the first inductance L1, the first electricity
Sense L1 is connected with the negative pole end of the other end of load or AC network AC.When onboard charger to the power battery of electric car into
When row charging, electric energy can be provided by AC network AC；When power battery is externally discharged by onboard charger, can be
Grid-connected electric discharge discharges into AC network AC, is also possible to 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 includes following step
It is rapid:
S1, when onboard charger every time charges to the power battery of electric car, acquisition controls H in the first way
Time Ty is arranged in the charging setting time Tx of bridge and the charging for controlling H bridge in a second manner.
According to one embodiment of present invention, as shown in figure 3, when A controls H bridge in the first way, wherein vehicle-mounted when supplying
When the power grid instantaneous voltage of charger is greater than 0, control first switch tube T1 is in opening state always, and controls second switch
T2 is in off state always, and control third switch transistor T 3 and 4 alternating, complementary of the 4th switch transistor T turn on and off, wherein
When controlling third switch transistor T 3 and 4 alternating, complementary of the 4th switch transistor T turns on and off, the PWM wave of third switch transistor T 3 is controlled
The PWM waveform of shape and the 4th switch transistor T 4 is complementary, and the duty ratio for controlling the PWM waveform of third switch transistor T 3 becomes again from becoming smaller greatly
Greatly, the duty ratio for controlling the PWM waveform of the 4th switch transistor T 4 becomes smaller again from small become larger；When the power grid of supply onboard charger is instantaneous
When voltage is less than 0, control third switch T3 is in opening state always, and the 4th switch transistor T 4 of control is in and turns off shape always
State, and control first switch tube T1 and second switch T2 alternating, complementary turn on and off, wherein in control first switch tube
When T1 and second switch T2 alternating, complementary turn on and off, the PWM waveform and second switch T2 of first switch tube T1 are controlled
PWM waveform it is complementary, and the duty ratio for controlling the PWM waveform of first switch tube T1 becomes larger again from becoming smaller greatly, controls second switch
The duty ratio of the PWM waveform of pipe T2 becomes smaller again from small become larger.
Also, as shown in figure 4, when B controls H bridge in a second manner, wherein when the power grid of supply onboard charger is instantaneously electric
When pressure is greater than 0, control second switch T2 is in opening state always, and controls first switch tube T1 and be in and turn off shape always
State, and control third switch transistor T 3 and 4 alternating, complementary of the 4th switch transistor T turn on and off, wherein in control third switching tube
When T3 and 4 alternating, complementary of the 4th switch transistor T turn on and off, the PWM waveform and the 4th switch transistor T 4 of third switch transistor T 3 are controlled
PWM waveform it is complementary, and the duty ratio for controlling the PWM waveform of third switch transistor T 3 becomes smaller again from small become larger, the 4th switch of control
The duty ratio of the PWM waveform of pipe T4 becomes larger again from becoming smaller greatly；When supplying the power grid instantaneous voltage of onboard charger less than 0, control
It makes the 4th switch transistor T 4 and is in opening state always, and control third switch transistor T 3 and be in off state always, and control the
One switch transistor T 1 and second switch T2 alternating, complementary turn on and off, wherein in control first switch tube T1 and second switch
When pipe T2 alternating, complementary turns on and off, the PWM waveform of the PWM waveform and second switch T2 that control first switch tube T1 is mutual
It mends, and the duty ratio for controlling the PWM waveform of first switch tube T1 becomes smaller again from small become larger, controls the PWM wave of second switch T2
The duty ratio of shape becomes larger again from becoming smaller greatly.
S2, according to Tx and Ty to H bridge carry out alternately control with to first switch tube, second switch, third switching tube and
4th switching tube carries out temperature equalization control.
Wherein, it should be noted that during onboard charger is to power battery charging, if only with first party
Formula A controls H bridge, and when network voltage instantaneous value is greater than 0, first switch tube T1 keeps open-minded always, second switch T2
Holding turns off always, and third switch transistor T 3 and 4 alternating, complementary of the 4th switch transistor T turn on and off, and open in third switch transistor T 3
Induction charging when logical, the 4th switch transistor T 4 turns off in onboard charger is opened in the shutdown of third switch transistor T 3, the 4th switch transistor T 4
Inductive discharge when logical；When network voltage instantaneous value is less than 0, third switch transistor T 3 keeps open-minded always, and the 4th switch transistor T 4 is kept
Turn off always, first switch tube T1 and second switch T2 alternating, complementary turn on and off, and open in first switch tube T1,
Induction charging when two switch transistor Ts 2 turn off in onboard charger, when first switch tube T1 shutdown, second switch T2 are opened
Inductive discharge.To induction charging when being opened due to first switch tube T1 and third switch transistor T 3, it is bigger to open duty, therefore
One switch transistor T 1, third switch transistor T 3 can overheat.
Similarly, during onboard charger is to power battery charging, if only with second method B to H bridge into
Row control, when network voltage instantaneous value is greater than 0, first switch tube T1 holding is turned off always, and second switch T2 holding is opened always
Logical, third switch transistor T 3 and 4 alternating, complementary of the 4th switch transistor T turn on and off, and open in the 4th switch transistor T 4, third switch
Induction charging when pipe T3 is turned off in onboard charger, when the shutdown of the 4th switch transistor T 4, third switch transistor T 3 are opened, inductance is put
Electricity；When network voltage instantaneous value is less than 0, the 4th switch transistor T 4 keeps open-minded always, and the holding of third switch transistor T 3 turns off always, the
One switch transistor T 1 and second switch T2 alternating, complementary turn on and off, and open in second switch T2, first switch tube T1
Induction charging when shutdown in onboard charger, the inductive discharge when second switch T2 shutdown, first switch tube T1 are opened.By
To induction charging when second switch T2 and the 4th switch transistor T 4 are opened, it is bigger to open duty, therefore second switch T2,
4th switch transistor T 4 can overheat.
Therefore, in an embodiment of the present invention, when onboard charger every time charges to power battery, first be arranged Tx and
Ty first can be controlled such that onboard charger to H bridge using first method A then during to power battery charging
To power battery charging, until reaching Tx using the time that first method A controls H bridge, it is switched to using second method B
To H bridge be controlled such that onboard charger to power battery charging, until using second method B to H bridge controlled when
Between reach Ty, so complete a charging cycle (i.e. a charge cycle time=Tx+Ty), then be switched to using first method
A to H bridge be controlled such that onboard charger to power battery charging, until using first method A to H bridge controlled when
Between reach Tx, then switch to using second method B to H bridge be controlled such that onboard charger to power battery charging, directly
Reach Ty to the time controlled using second method B H bridge ... ..., carry out repeatedly, realization replaces H bridge
Control carries out temperature equalization control to first switch tube, second switch, third switching tube and the 4th switching tube to realize.
Certainly, during to power battery charging, onboard charger first can also be controlled such that H bridge using second method B
To power battery charging, until reaching Ty using the time that second method B controls H bridge, it is switched to using first method A
To H bridge be controlled such that onboard charger to power battery charging, until using first method A to H bridge controlled when
Between reach Tx, so complete a charging cycle, and be repeated according to such charging cycle, until power battery charging is complete
At.
In other words, alternately control is carried out to H bridge according to Tx and Ty in above-mentioned steps S2, comprising: when using first method control
When the time of H bridge processed reaches Tx, H bridge is controlled using second method, until being reached using the time of second method control H bridge
To Ty；Or when the time using second method control H bridge reaches Ty, H bridge is controlled using first method, until adopting
Reach Tx with the time of first method control H bridge.
According to one embodiment of present invention, the charging setting time Tx for controlling H bridge in the first way can be equal to second
Mode controls the charging setting time Ty of H bridge.
Specifically, according to one embodiment of present invention, as shown in figure 5, above-mentioned onboard charger of electric car
Control method the following steps are included:
S501, wave is opened in charging, i.e., when onboard charger is to power battery charging, needs to export control waveform and come to H bridge
In switching tube controlled.
Tx and Ty is arranged in S502.
S503 is controlled such that onboard charger charges to power battery to H bridge using first method A, and
Judge whether this charging terminates in charging process, if so, terminating process, continues to judge if not, returning.
S504 judges whether reach Tx using the time of first method A control H bridge.If so, executing step S505；Such as
Fruit is no, return step S503.
S505 is controlled such that onboard charger charges to power battery to H bridge using second method B, and
Judge whether this charging terminates in charging process, if so, terminating process, continues to judge if not, returning.
S506 judges whether reach Ty using the time of second method B control H bridge.If so, returning to step
S503；If not, return step S505.
Therefore, the control method of the onboard charger of electric car of the embodiment of the present invention can make onboard charger right every time
Guarantee that first switch tube, second switch, third switching tube and the fever of the 4th switching tube are relatively flat during power battery charging
Weighing apparatus, improves the working life of onboard charger.
S3, when the power battery of electric car is externally discharged by onboard charger, acquisition is controlled in the first way
The electric discharge total time TC of the H bridge processed and electric discharge total time TD for controlling H bridge in a second manner, and judge discharge total time TC and electric discharge
Relationship between total time TD.
According to one embodiment of present invention, as shown in fig. 6, when A controls H bridge in the first way, wherein work as vehicle-mounted charge
When the external electric discharge instantaneous voltage of device is greater than 0, control first switch tube T1 is in opening state always, and controls second switch
T2 is in off state always, and control third switch transistor T 3 and 4 alternating, complementary of the 4th switch transistor T turn on and off, wherein
When controlling third switch transistor T 3 and 4 alternating, complementary of the 4th switch transistor T turns on and off, the PWM wave of third switch transistor T 3 is controlled
The PWM waveform of shape and the 4th switch transistor T 4 is complementary, and the duty ratio for controlling the PWM waveform of third switch transistor T 3 becomes again from becoming smaller greatly
Greatly, the duty ratio for controlling the PWM waveform of the 4th switch transistor T 4 becomes smaller again from small become larger；When the external electric discharge of onboard charger is instantaneous
When voltage is less than 0, control third switch transistor T 3 is in opening state always, and the 4th switch transistor T 4 of control is in and turns off shape always
State, and control first switch tube T1 and second switch T2 alternating, complementary turn on and off, wherein in control first switch tube
When T1 and second switch T2 alternating, complementary turn on and off, the PWM waveform and second switch T2 of first switch tube T1 are controlled
PWM waveform it is complementary, and the duty ratio for controlling the PWM waveform of first switch tube T1 becomes larger again from becoming smaller greatly, controls second switch
The duty ratio of the PWM waveform of pipe T2 becomes smaller again from small become larger.
Also, as shown in fig. 7, when B controls H bridge in a second manner, wherein when the instantaneous electricity of external electric discharge of onboard charger
When pressure is greater than 0, control second switch T2 is in opening state always, and controls first switch tube T1 and be in and turn off shape always
State, and control third switch transistor T 3 and 4 alternating, complementary of the 4th switch transistor T turn on and off, wherein in control third switching tube
When T3 and 4 alternating, complementary of the 4th switch transistor T turn on and off, the PWM waveform and the 4th switch transistor T 4 of third switch transistor T 3 are controlled
PWM waveform it is complementary, and the duty ratio for controlling the PWM waveform of third switch transistor T 3 becomes smaller again from small become larger, the 4th switch of control
The duty ratio of the PWM waveform of pipe T4 becomes larger again from becoming smaller greatly；When the external electric discharge instantaneous voltage of onboard charger is less than 0, control
It makes the 4th switch transistor T 4 and is in opening state always, and control third switch transistor T 3 and be in off state always, and control the
One switch transistor T 1 and second switch T2 alternating, complementary turn on and off, wherein in control first switch tube T1 and second switch
When pipe T2 alternating, complementary turns on and off, the PWM waveform of the PWM waveform and second switch T2 that control first switch tube T1 is mutual
It mends, and the duty ratio for controlling the PWM waveform of first switch tube T1 becomes smaller again from small become larger, controls the PWM wave of second switch T2
The duty ratio of shape becomes larger again from becoming smaller greatly.
S4 selects the mode controlled H bridge according to the relationship between electric discharge total time TC and the total time TD that discharges, with
Temperature equalization control is carried out to first switch tube, second switch, third switching tube and the 4th switching tube.
Wherein, it should be noted that during power battery is externally discharged by onboard charger, if only with
First method A controls H bridge, and when external discharge voltage instantaneous value is greater than 0, first switch tube T1 keeps open-minded always, the
The holding of two switch transistor Ts 2 turns off always, and third switch transistor T 3 and 4 alternating, complementary of the 4th switch transistor T turn on and off, and in third
The shutdown of switch transistor T 3, induction charging of the 4th switch transistor T 4 when opening in onboard charger, are opened in third switch transistor T 3, the 4th
Inductive discharge when switch transistor T 4 turns off；When external discharge voltage instantaneous value is less than 0, third switch transistor T 3 keeps open-minded always, the
The holding of four switch transistor Ts 4 turns off always, and first switch tube T1 and second switch T2 alternating, complementary turn on and off, and first
The shutdown of switch transistor T 1, induction charging of second switch T2 when opening in onboard charger, are opened in first switch tube T1, second
Inductive discharge when switch transistor T 2 turns off.To induction charging when being opened due to second switch T2 and the 4th switch transistor T 4, so
Two switch transistor Ts 2 and the shutdown of 4 belt current of the 4th switch transistor T, carry out hard switching, therefore second switch T2 and the 4th switch transistor T 4
It will appear superheating phenomenon.
Similarly, during power battery is externally discharged by onboard charger, if only with B pairs of second method
H bridge is controlled, and when external discharge voltage instantaneous value is greater than 0, first switch tube T1 holding is turned off always, and second switch T2 is protected
To hold open-minded always, third switch transistor T 3 and 4 alternating, complementary of the 4th switch transistor T turn on and off, and turn off in the 4th switch transistor T 4,
Induction charging when third switch transistor T 3 is opened in onboard charger is opened in the 4th switch transistor T 4, third switch transistor T 3 turns off
When inductive discharge；When external discharge voltage instantaneous value is less than 0, the 4th switch transistor T 4 keeps open-minded always, and third switch transistor T 3 is protected
Hold and turn off always, first switch tube T1 and second switch T2 alternating, complementary turn on and off, and second switch T2 turn off,
Induction charging when first switch tube T1 is opened in onboard charger is opened in second switch T2, first switch tube T1 shutdown
When inductive discharge.To induction charging when being opened due to first switch tube T1 and third switch transistor T 3, thus first switch tube T1 and
The shutdown of 3 belt current of third switch transistor T carries out hard switching, therefore first switch tube T1 and third switch transistor T 3 will appear overheat now
As.
Therefore, in an embodiment of the present invention, power battery, which passes through vehicle, to be controlled such that H bridge using first method A
When load charger externally discharges, the time that record controls H bridge using first method A, to can be obtained in the first way
The electric discharge total time TC for controlling H bridge, is then stored；Power battery, which passes through, to be controlled such that H bridge using second method B
When onboard charger externally discharges, the time that record controls H bridge using second method B, thus available with second party
Formula controls the electric discharge total time TD of H bridge, is then stored.Then between judgement electric discharge total time TC and electric discharge total time TD
Relationship finally selects the mode controlled H bridge according to the relationship between electric discharge total time TC and the total time TD that discharges, thus
It realizes and temperature equalization control is carried out to first switch tube, second switch, third switching tube and the 4th switching tube.
Wherein, the mode controlled H bridge is selected according to the relationship between electric discharge total time TC and the total time TD that discharges,
It specifically includes: when the total time TC that discharges is greater than electric discharge total time TD, second method being selected to control H bridge；When electric discharge is total
When time TC is less than electric discharge total time TD, first method is selected to control H bridge；When the total time TC that discharges, which is equal to, discharges total
Between TD when, select first method or second method to control H bridge.
That is, before power battery externally discharge and started by onboard charger, from storage region acquisition with the
One mode controls the electric discharge total time TC of H bridge and controls the electric discharge total time TD of H bridge in a second manner, then to electric discharge total time
TC and electric discharge total time TD are judged, are determined according to judging result using first method and are controlled H bridge or using the
Two control modes control H bridge.Wherein, electric discharge chooses mode later just according to fixed form i.e. first method or second every time
Mode controls H bridge to make power battery externally discharge by onboard charger, and externally record discharges total time at the end of electric discharge, example
Such as, when externally electric discharge is using first method control H bridge for this, the electric discharge total time externally recorded at the end of electric discharge is this
This external discharge time is added from the electric discharge total time of storage region acquisition when externally electric discharge starts, i.e., externally electric discharge is tied every time
Electric discharge total time is updated after beam, select which kind of mode when to facilitating next externally electric discharge to control H bridge.
Specifically, according to one embodiment of present invention, as shown in figure 8, above-mentioned onboard charger of electric car
Control method the following steps are included:
Wave is opened in S801, electric discharge, i.e., when power battery is externally discharged by onboard charger, needs to export control waveform
Switching tube in H bridge is controlled.
S802, read in the first way A control H bridge electric discharge total time TC and in a second manner B control H bridge electric discharge it is total
Time TD.
S803, judges whether TC is greater than TD.If so, executing step S804；If not, executing step S808.
S804 selects second method B to control H bridge.
S805, power battery externally carry out discharge process by onboard charger.
S806, judges whether this external discharge process terminates.If so, executing step S807；If not, return step
S805。
S807 records this external discharge time, thus obtained when externally electric discharge starts from storage region according to this
Electric discharge total time TD updates electric discharge total time TD plus this external discharge time.
S808, judges whether TC is less than TD.If so, executing step S809；If not, executing step S813.
S809 selects first method A to control H bridge.
S810, power battery externally carry out discharge process by onboard charger.
S811, judges whether this external discharge process terminates.If so, executing step S812；If not, return step
S810。
S812 records this external discharge time, thus obtained when externally electric discharge starts from storage region according to this
Electric discharge total time TC updates electric discharge total time TC plus this external discharge time.
S813 selects first method A or second method B to control H bridge.
S814, power battery externally carry out discharge process by onboard charger.
S815, judges whether this external discharge process terminates.If so, executing step S816；If not, return step
S814。
S816 records this external discharge time.Wherein, H bridge is controlled if it is selection first method A, thus according to
This electric discharge total time TC obtained when externally electric discharge starts from storage region updates electric discharge plus this external discharge time
Total time TC；H bridge is controlled if it is selection second method B, is obtained when starting from storage region to externally be discharged according to this
The electric discharge total time TD taken updates electric discharge total time TD plus this external discharge time.
It is to be controlled using first method or second method H bridge, and record when therefore, by recording every time externally electric discharge
Electric discharge total time TC when using first method and electric discharge total time TD when using second method, then between TC and TD
Relationship is judged, to select the mode of control H bridge, can be realized in H bridge in the whole life cycle of onboard charger
Switch transistor T 1, T2, T3 and T4 calorific value and overcurrent relative equilibrium, can just increase the work longevity of onboard charger in this way
Life reduces failure rate.
The control method of onboard charger of electric car according to an embodiment of the present invention is obtained when power battery charging
Time Ty is arranged in the charging setting time Tx for controlling H bridge in the first way and the charging for controlling H bridge in a second manner, and according to Tx
H bridge alternately control to carry out temperature to first switch tube, second switch, third switching tube and the 4th switching tube with Ty
Balance route；When power battery electric discharge, obtains and control electric discharge total time TC of H bridge in the first way and control in a second manner
The electric discharge total time TD of H bridge, and judge the relationship between TC and TD, and according to the relationship selection between TC and TD to H bridge into
The mode of row control, to carry out temperature equalization control to first switch tube, second switch, third switching tube and the 4th switching tube
System.So that the fever relative equilibrium of each switching tube, improves the working life of switching tube in H bridge, and then extend vehicle-mounted fill
The life cycle of electric appliance.
As shown in figures 1A-c, onboard charger of electric car according to an embodiment of the present invention includes H bridge and control module
Such as MCU (Micro Control Unit, microcontroller).Wherein, H bridge is by first switch tube T1, second switch T2, third
Switch transistor T 3 and the 4th switch transistor T 4 are constituted.Control module every time fills the power battery of electric car in onboard charger
When time Tx being set and controls the charging setting of H bridge in a second manner for obtaining the charging of control H bridge in the first way when electric
Between Ty, and according to Tx and Ty to H bridge carry out alternately control to first switch tube T1, second switch T2, third switch transistor T 3
Temperature equalization control is carried out with the 4th switch transistor T 4, and is externally carried out in the power battery of electric car by onboard charger
Be also used to when electric discharge obtain in the first way control H bridge electric discharge total time TC and in a second manner control H bridge electric discharge it is total when
Between TD, and judge the relationship discharged between total time TC and the total time TD that discharges, and total according to electric discharge total time TC and electric discharge
Relationship between time TD selects the mode controlled H bridge, to open first switch tube T1, second switch T2, third
It closes pipe T3 and the 4th switch transistor T 4 carries out temperature equalization control.
According to one embodiment of present invention, when control module alternately control to H bridge according to Tx and Ty, wherein when
When reaching Tx using the time of first method control H bridge, H bridge is controlled using second method, until using second method
The time of control H bridge reaches Ty；Or when the time using second method control H bridge reaches Ty, using first method to H bridge
It is controlled, until reaching Tx using the time of first method control H bridge.
That is, in an embodiment of the present invention, when onboard charger every time charges to power battery, controlling mould
Tx and Ty is first arranged in block, then during to power battery charging, can first use first method A to H bridge controlled with
Make onboard charger to power battery charging, until reaching Tx using the time that first method A controls H bridge, is switched to
Onboard charger is controlled such that power battery charging, until using second method B to H bridge to H bridge using second method B
The time controlled reaches Ty, so completes a charging cycle (i.e. a charge cycle time=Tx+Ty), then be switched to
Onboard charger is controlled such that power battery charging, until using first method A to H bridge to H bridge using first method A
The time controlled reaches Tx, then switches to and is controlled such that onboard charger to power on H bridge using second method B
Battery charging carries out repeatedly until reaching Ty using the time that second method B controls H bridge ... ..., realizes to H
Bridge carries out alternately control, carries out temperature to first switch tube, second switch, third switching tube and the 4th switching tube to realize
Balance route.Certainly, during to power battery charging, vehicle first can also be controlled such that H bridge using second method B
Charger is carried to power battery charging, until reaching Ty using the time that second method B controls H bridge, is switched to use
First method A is controlled such that onboard charger to power battery charging, until carrying out using first method A to H bridge to H bridge
The time of control reaches Tx, so completes a charging cycle, and be repeated according to such charging cycle, until power electric
Pond charging complete.
Wherein, the charging that the charging setting time Tx of control H bridge can be equal to control H bridge in a second manner in the first way is set
Set time Ty.
According to one embodiment of present invention, when control module controls H bridge in the first way, wherein filled when supply is vehicle-mounted
When the power grid instantaneous voltage of electric appliance is greater than 0, control module controls first switch tube T1 and is in opening state always, and controls second
Switch transistor T 2 is in off state always, and control third switch transistor T 3 and 4 alternating, complementary of the 4th switch transistor T are opened and closed
It is disconnected, wherein when controlling third switch transistor T 3 and 4 alternating, complementary of the 4th switch transistor T turns on and off, to control third switch transistor T 3
PWM waveform and the 4th switch transistor T 4 PWM waveform it is complementary, and control third switch transistor T 3 PWM waveform duty ratio from big
Become smaller and become larger again, the duty ratio for controlling the PWM waveform of the 4th switch transistor T 4 becomes smaller again from small become larger；When supply onboard charger
When power grid instantaneous voltage is less than 0, control module controls third switch transistor T 3 and is in opening state always, and controls the 4th switching tube
T4 is in off state always, and control first switch tube T1 and second switch T2 alternating, complementary turn on and off, wherein
When controlling first switch tube T1 and second switch T2 alternating, complementary turns on and off, the PWM wave of first switch tube T1 is controlled
The PWM waveform of shape and second switch T2 are complementary, and the duty ratio for controlling the PWM waveform of first switch tube T1 becomes again from becoming smaller greatly
Greatly, the duty ratio for controlling the PWM waveform of second switch T2 becomes smaller again from small become larger.
Also, when control module controls H bridge in a second manner, wherein when the power grid instantaneous voltage of supply onboard charger
When greater than 0, control module controls second switch T2 and is in opening state always, and controls first switch tube T1 and be in and close always
Disconnected state, and control third switch transistor T 3 and 4 alternating, complementary of the 4th switch transistor T turn on and off, wherein open in control third
When pass pipe T3 and 4 alternating, complementary of the 4th switch transistor T turn on and off, the PWM waveform and the 4th switch of third switch transistor T 3 are controlled
The PWM waveform of pipe T4 is complementary, and the duty ratio for controlling the PWM waveform of third switch transistor T 3 becomes smaller again from small become larger, control the 4th
The duty ratio of the PWM waveform of switch transistor T 4 becomes larger again from becoming smaller greatly；When the power grid instantaneous voltage of supply onboard charger is less than 0
When, control module controls the 4th switch transistor T 4 and is in opening state always, and controls third switch transistor T 3 and be in and turn off shape always
State, and control first switch tube T1 and second switch T2 alternating, complementary turn on and off, wherein in control first switch tube
When T1 and second switch T2 alternating, complementary turn on and off, the PWM waveform and second switch T2 of first switch tube T1 are controlled
PWM waveform it is complementary, and the duty ratio for controlling the PWM waveform of first switch tube T1 becomes smaller again from small become larger, and controls second switch
The duty ratio of the PWM waveform of pipe T2 becomes larger again from becoming smaller greatly.
According to one embodiment of present invention, control module is according to the pass between electric discharge total time TC and the total time TD that discharges
When the mode that system's selection controls H bridge, wherein when the total time TC that discharges is greater than electric discharge total time TD, control module choosing
Second method is selected to control H bridge；When the total time TC that discharges is less than electric discharge total time TD, control module selects first method
H bridge is controlled；When the total time TC that discharges is equal to electric discharge total time TD, control module selects first method or second method
H bridge is controlled.
That is, in an embodiment of the present invention, control module is controlled such that H bridge using first method A dynamic
When power battery is externally discharged by onboard charger, the time that record controls H bridge using first method A, so as to
To the electric discharge total time TC for controlling H bridge in the first way, then stored；Control module carries out H bridge using second method B
Control so that power battery by onboard charger externally discharge when, record using second method B to H bridge controlled when
Between, so that the available electric discharge total time TD for controlling H bridge in a second manner, is then stored.Then control module judgement is put
Relationship between electric total time TC and electric discharge total time TD, finally according to the pass between electric discharge total time TC and the total time TD that discharges
The mode that system's selection controls H bridge, opens first switch tube, second switch, third switching tube and the 4th to realize
It closes pipe and carries out temperature equalization control.
According to one embodiment of present invention, when control module controls H bridge in the first way, wherein work as onboard charger
External electric discharge instantaneous voltage when being greater than 0, control module controls first switch tube T1 and is in opening state always, and controls second
Switch transistor T 2 is in off state always, and control third switch transistor T 3 and 4 alternating, complementary of the 4th switch transistor T are opened and closed
It is disconnected, wherein when controlling third switch transistor T 3 and 4 alternating, complementary of the 4th switch transistor T turns on and off, to control third switch transistor T 3
PWM waveform and the 4th switch transistor T 4 PWM waveform it is complementary, and control third switch transistor T 3 PWM waveform duty ratio from big
Become smaller and become larger again, the duty ratio for controlling the PWM waveform of the 4th switch transistor T 4 becomes smaller again from small become larger；It is external when onboard charger
When discharging instantaneous voltage less than 0, control module controls third switch transistor T 3 and is in opening state always, and controls the 4th switching tube
T4 is in off state always, and control first switch tube T1 and second switch T2 alternating, complementary turn on and off, wherein
When controlling first switch tube T1 and second switch T2 alternating, complementary turns on and off, the PWM wave of first switch tube T1 is controlled
The PWM waveform of shape and second switch T2 are complementary, and the duty ratio for controlling the PWM waveform of first switch tube T1 becomes again from becoming smaller greatly
Greatly, the duty ratio for controlling the PWM waveform of second switch T2 becomes smaller again from small become larger.
Also, when control module controls H bridge in a second manner, wherein when the external electric discharge instantaneous voltage of onboard charger
When greater than 0, control module controls second switch T2 and is in opening state always, and controls first switch tube T1 and be in and close always
Disconnected state, and control third switch transistor T 3 and 4 alternating, complementary of the 4th switch transistor T turn on and off, wherein open in control third
When pass pipe T3 and 4 alternating, complementary of the 4th switch transistor T turn on and off, the PWM waveform and the 4th switch of third switch transistor T 3 are controlled
The PWM waveform of pipe T4 is complementary, and the duty ratio for controlling the PWM waveform of third switch transistor T 3 becomes smaller again from small become larger, control the 4th
The duty ratio of the PWM waveform of switch transistor T 4 becomes larger again from becoming smaller greatly；When the external electric discharge instantaneous voltage of onboard charger is less than 0
When, control module controls the 4th switch transistor T 4 and is in opening state always, and controls third switch transistor T 3 and be in and turn off shape always
State, and control first switch tube T1 and second switch T2 alternating, complementary turn on and off, wherein in control first switch tube
When T1 and second switch T2 alternating, complementary turn on and off, the PWM waveform and second switch T2 of first switch tube T1 are controlled
PWM waveform it is complementary, and the duty ratio for controlling the PWM waveform of first switch tube T1 becomes smaller again from small become larger, and controls second switch
The duty ratio of the PWM waveform of pipe T2 becomes larger again from becoming smaller greatly.
In an embodiment of the present invention, as shown in Figure 1A or Figure 1B or Fig. 1 C, first switch tube T1, second switch T2,
Third switch transistor T 3 and the 4th switch transistor T 4 are that (Insulated Gate Bipolar Transistor, insulated gate are double by IGBT
Bipolar transistor), certainly, in other embodiments of the invention, first switch tube T1, second switch T2, third switching tube
T3 and the 4th switch transistor T 4 or metal-oxide-semiconductor.
Onboard charger of electric car according to an embodiment of the present invention, when power battery charging, control module obtain with
First method control H bridge charging setting time Tx and in a second manner control H bridge charging be arranged time Ty, and according to Tx with
Ty alternately control to H bridge equal to carry out temperature to first switch tube, second switch, third switching tube and the 4th switching tube
Weighing apparatus control, and in power battery electric discharge, control module is also used to obtain the electric discharge total time TC for controlling H bridge in the first way
The electric discharge total time TD of H bridge is controlled in a second manner, and judges the relationship between TC and TD, and according between TC and TD
Relationship selects the mode controlled H bridge, to first switch tube, second switch, third switching tube and the 4th switching tube
Temperature equalization control is carried out, so that the fever relative equilibrium of each switching tube, improves the working life of switching tube in H bridge, thus
Extend the life cycle of onboard charger.
In addition, the embodiment of the present invention also proposed a kind of electric car comprising the vehicle-mounted charging of above-mentioned electric car
Device.
The electric car of the embodiment of the present invention is charged and discharged in power battery by above-mentioned onboard charger
When, it can be realized and temperature equalization is carried out to first switch tube, second switch, third switching tube and the 4th switching tube in H bridge
Control, so that the fever relative equilibrium of each switching tube, improves the working life of switching tube in H bridge, to extend vehicle-mounted fill
The life cycle of electric appliance.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height 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. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (11)
1. a kind of control method of onboard charger of electric car, which is characterized in that the onboard charger includes H bridge, the H
Bridge is made of first switch tube, second switch, third switching tube and the 4th switching tube, and the control method includes following step
It is rapid:
When the onboard charger every time charges to the power battery of the electric car, acquisition controls in the first way
The charging setting time Tx of the H bridge and charging setting time Ty for controlling the H bridge in a second manner, with the first method
When controlling the H bridge, wherein when the power grid instantaneous voltage for supplying the onboard charger is greater than 0 or the onboard charger
External electric discharge instantaneous voltage when being greater than 0, control the first switch tube and be in opening state always, and control described second and open
Pipe is closed to open and close in off state always, and the control third switching tube and the 4th switching tube alternating, complementary
It is disconnected；When supplying the power grid instantaneous voltage of the onboard charger less than 0 or the external electric discharge of the onboard charger is instantaneous electric
It when pressure is less than 0, controls the third switching tube and is in opening state always, and control the 4th switching tube and be in and turn off always
State, and the control first switch tube and the second switch alternating, complementary turn on and off；
According to Tx and Ty to the H bridge carry out alternately control with to the first switch tube, second switch, third switching tube and
4th switching tube carries out temperature equalization control；
When the power battery of the electric car is externally discharged by the onboard charger, acquisition is controlled in the first way
It makes electric discharge total time TC of the H bridge and controls the electric discharge total time TD of the H bridge in a second manner, and judge that the electric discharge is total
Relationship between time TC and the electric discharge total time TD；
The side controlled the H bridge is selected according to the relationship between the electric discharge total time TC and the electric discharge total time TD
Formula, to carry out temperature equalization control to the first switch tube, second switch, third switching tube and the 4th switching tube.
2. the control method of onboard charger of electric car as described in claim 1, which is characterized in that described according to Tx and Ty
Alternately control is carried out to the H bridge, comprising:
When the time for controlling the H bridge using the first method reaching Tx, the H bridge is carried out using the second method
Control, until reaching Ty using the time that the second method controls the H bridge；Or
When the time for controlling the H bridge using the second method reaching Ty, the H bridge is carried out using the first method
Control, until reaching Tx using the time that the first method controls the H bridge.
3. the control method of onboard charger of electric car as described in claim 1, which is characterized in that total according to the electric discharge
Relationship between time TC and the electric discharge total time TD selects the mode controlled the H bridge, specifically includes:
When electric discharge total time TC being greater than the electric discharge total time TD, the second method is selected to control the H bridge
System；
When electric discharge total time TC being less than the electric discharge total time TD, the first method is selected to control the H bridge
System；
When electric discharge total time TC being equal to the electric discharge total time TD, the first method or the second method pair are selected
The H bridge is controlled.
4. the control method of onboard charger of electric car as claimed in any one of claims 1-3, which is characterized in that with institute
When stating the second method control H bridge, wherein
When the power grid instantaneous voltage for supplying the onboard charger is greater than the instantaneous electricity of external electric discharge of 0 or the onboard charger
It when pressure is greater than 0, controls the second switch and is in opening state always, and control the first switch tube and be in and turn off always
State, and the control third switching tube and the 4th switching tube alternating, complementary turn on and off；
When supplying the power grid instantaneous voltage of the onboard charger less than 0 or the external electric discharge of the onboard charger is instantaneous electric
It when pressure is less than 0, controls the 4th switching tube and is in opening state always, and control the third switching tube and be in and turn off always
State, and the control first switch tube and the second switch alternating, complementary turn on and off.
5. the control method of onboard charger of electric car as described in claim 1, which is characterized in that with the first method
The charging setting time Tx for controlling the H bridge, which is equal to, is arranged time Ty with the charging that the second method controls the H bridge.
6. a kind of onboard charger of electric car characterized by comprising
H bridge, the H bridge are made of first switch tube, second switch, third switching tube and the 4th switching tube；
Control module, the control module every time charge to the power battery of the electric car in the onboard charger
When control the charging setting time Tx of the H bridge in the first way for obtaining and in a second manner control the charging of the H bridge
Time Ty is set, and the H bridge alternately control to the first switch tube, second switch, the according to Tx and Ty
Three switching tubes and the 4th switching tube carry out temperature equalization control, and pass through in the power battery of the electric car described vehicle-mounted
It is also used to obtain electric discharge total time TC and in a second manner for controlling the H bridge in the first way when charger is externally discharged
The electric discharge total time TD of the H bridge is controlled, and judges the relationship between the electric discharge total time TC and the electric discharge total time TD,
And the side controlled the H bridge is selected according to the relationship between the electric discharge total time TC and the electric discharge total time TD
Formula, it is described to carry out temperature equalization control to the first switch tube, second switch, third switching tube and the 4th switching tube
When control module controls the H bridge with the first method, wherein when the power grid instantaneous voltage for supplying the onboard charger is big
When external electric discharge instantaneous voltage in 0 or the onboard charger is greater than 0, the control module controls the first switch tube
In opening state always, and controls the second switch and be in off state always, and the control third switching tube
It is turned on and off with the 4th switching tube alternating, complementary；When supply the power grid instantaneous voltage of the onboard charger less than 0 or
When the external electric discharge instantaneous voltage of onboard charger described in person is less than 0, the control module controls the third switching tube and is in
Opening state always, and control the 4th switching tube and be in off state always, and the control first switch tube and institute
Second switch alternating, complementary is stated to turn on and off.
7. onboard charger of electric car as claimed in claim 6, which is characterized in that the control module is according to Tx and Ty couples
When the H bridge alternately control, wherein
When the time for controlling the H bridge using the first method reaching Tx, the H bridge is carried out using the second method
Control, until reaching Ty using the time that the second method controls the H bridge；Or
When the time for controlling the H bridge using the second method reaching Ty, the H bridge is carried out using the first method
Control, until reaching Tx using the time that the first method controls the H bridge.
8. onboard charger of electric car as claimed in claim 6, which is characterized in that the control module is according to the electric discharge
When the mode that the relationship selection between total time TC and the electric discharge total time TD controls the H bridge, wherein
When electric discharge total time TC being greater than the electric discharge total time TD, the control module selects the second method to institute
H bridge is stated to be controlled；
When electric discharge total time TC being less than the electric discharge total time TD, the control module selects the first method to institute
H bridge is stated to be controlled；
When electric discharge total time TC being equal to the electric discharge total time TD, the control module selects the first method or institute
Second method is stated to control the H bridge.
9. the onboard charger of electric car as described in any one of claim 6-8, which is characterized in that the control module with
When the second method controls the H bridge, wherein
When the power grid instantaneous voltage for supplying the onboard charger is greater than the instantaneous electricity of external electric discharge of 0 or the onboard charger
When pressure is greater than 0, the control module controls the second switch and is in opening state always, and controls the first switch tube
It is turned on and off in off state always, and the control third switching tube and the 4th switching tube alternating, complementary；
When supplying the power grid instantaneous voltage of the onboard charger less than 0 or the external electric discharge of the onboard charger is instantaneous electric
When pressure is less than 0, the control module controls the 4th switching tube and is in opening state always, and controls the third switching tube
It is turned on and off in off state always, and the control first switch tube and the second switch alternating, complementary.
10. the onboard charger of electric car as described in any one of claim 6-8, which is characterized in that with the first party
The charging setting time Tx that formula controls the H bridge, which is equal to, is arranged time Ty with the charging that the second method controls the H bridge.
11. a kind of electric car, which is characterized in that fill including the electric car as described in any one of claim 6-10 is vehicle-mounted
Electric appliance.
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 |
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| Application Number | Priority Date | Filing Date | Title |
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| 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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| CN108155805B (en) * | 2016-12-02 | 2019-11-22 | 比亚迪股份有限公司 | The control method of electric car and its DC-DC converter and DC-DC converter |
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104600998A (en) * | 2015-02-10 | 2015-05-06 | 四川英杰电气股份有限公司 | Method for controlling uniform heating of switch device of switch power source |
| CN204835609U (en) * | 2015-07-24 | 2015-12-02 | 比亚迪股份有限公司 | Electric automobile and electric automobile's on -vehicle charger |
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| CN101604923B (en) * | 2009-07-13 | 2012-05-16 | 西安理工大学 | Pulse width modulation (PWM) control method for single-phase grid-connected inverter |
| CN102222958B (en) * | 2011-06-21 | 2013-10-16 | 清华大学深圳研究生院 | Vehicle-mounted bidirectional charger for electric automobile |
| KR101312372B1 (en) * | 2012-08-09 | 2013-09-27 | 전남대학교산학협력단 | Single phase inverter |
| CN105247772B (en) * | 2013-05-20 | 2018-07-24 | 松下知识产权经营株式会社 | DC power supply circuit |
| JP5943952B2 (en) * | 2014-03-26 | 2016-07-05 | 株式会社豊田中央研究所 | Power system |
| CN103929087A (en) * | 2014-04-01 | 2014-07-16 | 陕西科技大学 | High-efficiency high-power-factor two-way AC/DC converter |
| CN105098941B (en) * | 2015-09-02 | 2017-06-16 | 山东大学 | Consider the charging electric vehicle direction Control System and method of mains frequency stabilization |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104600998A (en) * | 2015-02-10 | 2015-05-06 | 四川英杰电气股份有限公司 | Method for controlling uniform heating of switch device of switch power source |
| CN204835609U (en) * | 2015-07-24 | 2015-12-02 | 比亚迪股份有限公司 | Electric automobile and electric automobile's on -vehicle charger |
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