CN106891738B - 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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- CN106891738B CN106891738B CN201510955965.0A CN201510955965A CN106891738B CN 106891738 B CN106891738 B CN 106891738B CN 201510955965 A CN201510955965 A CN 201510955965A CN 106891738 B CN106891738 B CN 106891738B
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- bridge
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- onboard charger
- switching tube
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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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Abstract
The invention discloses the control methods of a kind of electric car and its onboard charger and onboard charger, wherein, control method is the following steps are included: when power battery charging, it obtains the charging total time TA for controlling H bridge in the first way and controls the charging total time TB of H bridge in a second manner, and judge the relationship between TA and TB；The mode controlled H bridge is selected, according to the relationship between TA and TB to carry out temperature equalization control to first to fourth switching tube；When power battery externally discharges, time Tn is arranged in the electric discharge for obtaining the electric discharge setting time Tm 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 Tm and Tn, 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 power battery of the onboard charger to the electric car carries out
When charging, the charging for obtaining charging total time TA for controlling the H bridge in the first way and controlling the H bridge in a second manner is total
Time TB, and judge the relationship between the charging total time TA and the charging total time TB；According to the charging total time
Relationship between TA and the charging total time TB selects the mode that is controlled the H bridge, 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 is every
It is secondary when externally being discharged by the onboard charger, obtain the electric discharge setting time Tm for controlling the H bridge in the first way
The electric discharge setting time Tn of the H bridge is controlled in a second manner；The H bridge alternately control to institute according to Tm and Tn
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
The charging total time TA of H bridge is controlled in the first way and controls the charging total time TB of H bridge in a second manner, and judges TA and TB
Between relationship, and the mode that is controlled H bridge is selected according to the relationship between TA and TB, to first switch tube, the
Two switching tubes, third switching tube and the 4th switching tube carry out temperature equalization control；When power battery externally discharges, obtain with the
One mode controls the electric discharge setting time Tm of H bridge and controls the electric discharge setting time Tn of H bridge in a second manner, and according to Tm and Tn
H bridge alternately control to carry out temperature equalization to first switch tube, second switch, third switching tube and the 4th switching tube
Control.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
The life cycle of charger.
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 controlled when power battery of the onboard charger to the electric car charges for obtaining in the first way
It makes charging total time TA of the H bridge and controls the charging total time TB of the H bridge in a second manner, and judge that the charging is total
Relationship between time TA and the charging total time TB, and according to charging total time TA and charging total time TB
Between relationship select the mode that is controlled the H bridge, to be switched to the first switch tube, second switch, third
Pipe and the 4th switching tube carry out temperature equalization control, and pass through described vehicle-mounted fill every time in the power battery of the electric car
It is also used to obtain the electric discharge setting time Tm and in a second manner for controlling the H bridge in the first way when electric appliance is externally discharged
The electric discharge setting time Tn of the H bridge is controlled, and the H bridge alternately control to the first switch according to Tm and Tn
Pipe, 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 controls the charging total time TA of H bridge and controls the charging total time TB of H bridge in a second manner, and judge TA and TB it
Between relationship, and the mode that is controlled H bridge is selected according to the relationship between TA and TB, to first switch tube, second
Switching tube, third switching tube and the 4th switching tube carry out temperature equalization control, and when power battery externally discharges, and control mould
Time Tn is arranged in the electric discharge that block obtains the electric discharge setting time Tm for controlling H bridge in the first way and controls H bridge in a second manner, and
According to Tm and Tn to H bridge carry out alternately control with to first switch tube, second switch, third switching tube and the 4th switching tube into
Trip temperature Balance route, so that the fever relative equilibrium of each switching tube, improves the working life of switching tube in H bridge, to prolong
The life cycle of long 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.
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 is obtained when power battery of the onboard charger to electric car charges and is controlled H bridge in the first way
The charging total time TA and charging total time TB for controlling H bridge in a second manner, and judge charge total time TA and charging total time
Relationship between TB.
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 selects the mode controlled H bridge according to the relationship between charging total time TA and the total time TB that charges, 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 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, it is controlled such that onboard charger to dynamic on H bridge using first method A
When power battery charges, the time that record controls H bridge using first method A, so that available control H bridge in the first way
Charging total time TA, then stored；It is controlled such that onboard charger to power electric on H bridge using second method B
When pond is charged, the time that record controls H bridge using second method B, so that available control filling for H bridge in a second manner
Electric total time TB, is then stored.Then the relationship between judgement charging total time TA and the total time TB that charges, last basis
Relationship between charging total time TA and the total time TB that charges selects the mode controlled H bridge, opens to realize first
Guan Guan, second switch, third switching tube and the 4th switching tube carry out temperature equalization control.
Wherein, the mode controlled H bridge is selected according to the relationship between charging total time TA and the total time TB that charges,
It specifically includes: when the total time TA that charges is greater than charging total time TB, second method being selected to control H bridge；When charging is total
When time TA is less than charging total time TB, first method is selected to control H bridge；When the total time TA that charges, which is equal to, charges total
Between TB when, select first method or second method to control 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.
S502, read in the first way A control H bridge charging total time TA and in a second manner B control H bridge charging it is total
Time TB.
S503, judges whether TA is greater than TB.If so, executing step S504；If not, executing step S508.
S504 selects second method B to control H bridge.
S505, onboard charger carry out charging process to power battery.
S506, judges whether this charging process terminates.If so, executing step S507；If not, return step
S505。
S507 records this charging time, thus when total from the charging that storage region obtains when being started according to this charging
Between TB plus this charging time come update charging total time TB.
S508, judges whether TA is less than TB.If so, executing step S509；If not, executing step S513.
S509 selects first method A to control H bridge.
S510, onboard charger carry out charging process to power battery.
S511, judges whether this charging process terminates.If so, executing step S512；If not, return step
S510。
S512 records this charging time, thus when total from the charging that storage region obtains when being started according to this charging
Between TA plus this charging time come update charging total time TA.
S513 selects first method A or second method B to control H bridge.
S514, onboard charger carry out charging process to power battery.
S515, judges whether this charging process terminates.If so, executing step S516；If not, return step
S514。
S516 records this charging time.Wherein, H bridge is controlled if it is selection first method A, thus according to this
The charging total time TA obtained when charging starts from storage region updates charging total time TA plus this charging time；If
It is that selection second method B controls H bridge, to add when being started according to this charging from the charging total time TB that storage region obtains
This upper charging time updates charging total time TB.
It is to be controlled using first method or second method H bridge, and record use when therefore, by recording charging every time
Charging total time TA when first method and charging total time TB when using second method, then to the relationship between TA and TB
Judged, to select the mode of control H bridge, opening in H bridge can be realized in the whole life cycle of onboard charger
The calorific value and overcurrent relative equilibrium for closing pipe T1, T2, T3 and T4, can just increase the working life of onboard charger in this way,
Reduce failure rate.
S3 is obtained when the power battery of electric car, which passes through onboard charger every time, externally to be discharged with first party
Formula controls the electric discharge setting time Tm of H bridge and controls the electric discharge setting time Tn of H bridge in a second manner.
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, according to Tm and Tn 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 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, when power battery passes through onboard charger every time and externally discharges, Tm is first set
And Tn can first carry out H bridge using first method A then during power battery is externally discharged by onboard charger
It controls so that power battery is externally discharged by onboard charger, until being reached using the time that first method A controls H bridge
To Tm, it is switched to and power battery is externally discharged by onboard charger is controlled such that H bridge using second method B, until
Tn is reached using the time that second method B controls H bridge, so completes a discharge cycles (i.e. when a discharge cycles
Between=Tm+Tn), then be switched to and power battery is externally put by onboard charger to be controlled such that H bridge using first method A
Electricity, until the time controlled H bridge using first method A reaches Tm, then switch to using second method B to H bridge into
Row controls so that power battery is externally discharged by onboard charger, until the time controlled using second method B H bridge
Reach Tn ... ..., carry out repeatedly, realize and alternately control is carried out to H bridge, to realize to first switch tube, second switch
Pipe, third switching tube and the 4th switching tube carry out temperature equalization control.Certainly, during power battery externally discharges,
Power battery is externally discharged by onboard charger first can be controlled such that H bridge using second method B, until using second
The time that mode B controls H bridge reaches Tn, is switched to and is controlled such that power battery is logical to H bridge using first method A
It crosses onboard charger externally to discharge, until reaching Tm using the time that first method A controls H bridge, so completes one
Discharge cycles, and be repeated according to such discharge cycles, until power battery electric discharge terminates.
In other words, alternately control is carried out to H bridge according to Tm and Tn in above-mentioned steps S2, comprising: when using first method control
When the time of H bridge processed reaches Tm, H bridge is controlled using second method, until being reached using the time of second method control H bridge
To Tn；Or when the time using second method control H bridge reaches Tn, H bridge is controlled using first method, until adopting
Reach Tm with the time of first method control H bridge.
According to one embodiment of present invention, the electric discharge setting time Tm for controlling H bridge in the first way can be equal to second
Mode controls the electric discharge setting time Tn of 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.
Tm and Tn is arranged in S802.
S803 is controlled such that power battery is externally discharged by onboard charger to H bridge using first method A, and
Judge whether this electric discharge terminates during discharge, if so, terminating process, continues to judge if not, returning.
S804 judges whether reach Tm using the time of first method A control H bridge.If so, executing step S805；Such as
Fruit is no, return step S803.
S805 is controlled such that power battery is externally discharged by onboard charger to H bridge using second method B, and
Judge whether this electric discharge terminates during discharge, if so, terminating process, continues to judge if not, returning.
S806 judges whether reach Tn using the time of second method B control H bridge.If so, return step S803；Such as
Fruit is no, return step S805.
Therefore, the control method of the onboard charger of electric car of the embodiment of the present invention can be such that power battery passes through every time
Guarantee first switch tube, second switch, third switching tube and the fever of the 4th switching tube in the external discharge process of onboard charger
Relative equilibrium improves the working life of onboard charger.
The control method of onboard charger of electric car according to an embodiment of the present invention is obtained when power battery charging
The charging total time TA of H bridge is controlled in the first way and controls the charging total time TB of H bridge in a second manner, and judges TA and TB
Between relationship, and the mode that is controlled H bridge is selected according to the relationship between TA and TB, to first switch tube, the
Two switching tubes, third switching tube and the 4th switching tube carry out temperature equalization control；When power battery externally discharges, obtain with the
One mode controls the electric discharge setting time Tm of H bridge and controls the electric discharge setting time Tn of H bridge in a second manner, and according to Tm and Tn
H bridge alternately control to carry out temperature equalization to first switch tube, second switch, third switching tube and the 4th switching tube
Control.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
The life cycle of charger.
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 is when power battery of the onboard charger to electric car charges
For obtaining the charging total time TA of control H bridge in the first way and in a second manner the charging total time TB of control H bridge, and sentence
Relationship between disconnected charging total time TA and the total time TB that charges, and according between charging total time TA and charging total time TB
Relationship select the mode that is controlled H bridge, to first switch tube T1, second switch T2, third switch transistor T 3 and the
Four switch transistor Ts 4 carry out temperature equalization control, and pass through onboard charger every time in the power battery of electric car and externally carry out
The electric discharge for being also used to obtain the electric discharge setting time Tm for controlling H bridge in the first way when electric discharge and controlling H bridge in a second manner is set
Time Tn is set, and H bridge alternately control to switch first switch tube T1, second switch T2, third according to Tm and Tn
Pipe T3 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 pass between charging total time TA and the total time TB that charges
When the mode that system's selection controls H bridge, wherein when the total time TA that charges is greater than charging total time TB, control module choosing
Second method is selected to control H bridge；When the total time TA that charges is less than charging total time TB, control module selects first method
H bridge is controlled；When the total time TA that charges is equal to charging total time TB, 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 vehicle to H bridge using first method A
When carrying charger to power battery charging, the time that record controls H bridge using first method A, thus available with the
One mode controls the charging total time TA of H bridge, is then stored；Control module use second method B to H bridge controlled with
When making onboard charger to power battery charging, the time that record controls H bridge using second method B, thus available
The charging total time TB for controlling H bridge in a second manner, is then stored.Then control module judges charging total time TA and fills
Relationship between electric total time TB, finally according to charging total time TA and charge total time TB between relationship selection to H bridge into
The mode of row control, to realize equal to first switch tube, second switch, third switching tube and the 4th switching tube progress temperature
Weighing apparatus control.
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, when control module alternately control to H bridge according to Tm and Tn, wherein when
When reaching Tm 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 Tn；Or when the time using second method control H bridge reaches Tn, using first method to H bridge
It is controlled, until reaching Tm using the time of first method control H bridge.
That is, in an embodiment of the present invention, when power battery passes through onboard charger every time and externally discharges, control
Tm and Tn is first arranged in module, then during power battery is externally discharged by onboard charger, can first use first party
Formula A is controlled such that power battery is externally discharged by onboard charger to H bridge, until being carried out using first method A to H bridge
The time of control reaches Tm, is switched to and is controlled such that power battery passes through onboard charger pair to H bridge using second method B
Outer electric discharge so completes one discharge cycles (i.e. one until reaching Tn using the time that second method B controls H bridge
The discharge cycles time=Tm+Tn), then be switched to and power battery is filled by vehicle-mounted to be controlled such that H bridge using first method A
Electric appliance externally discharges, until reaching Tm using the time that first method A controls H bridge, then switches to using second party
Formula B is controlled such that power battery is externally discharged by onboard charger to H bridge, until being carried out using second method B to H bridge
The time of control reaches Tn ... ..., carries out repeatedly, realizes and carries out alternately control to H bridge, to realize to first switch
Pipe, second switch, third switching tube and the 4th switching tube carry out temperature equalization control.Certainly, it externally discharges in power battery
During, power battery is externally discharged by onboard charger first can also be controlled such that H bridge using second method B,
Until the time controlled H bridge using second method B reaches Tn, be switched to use first method A to H bridge controlled with
Power battery is set externally to discharge by onboard charger, until Tm is reached using the time that first method A controls H bridge,
A discharge cycles are so completed, and are repeated according to such discharge cycles, until power battery electric discharge terminates.
Wherein, the electric discharge that the electric discharge setting time Tm of control H bridge can be equal to control H bridge in a second manner in the first way is set
Set time Tn.
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 controls the charging total time TA of H bridge and controls the charging total time TB of H bridge in a second manner, and judge TA and TB it
Between relationship, and the mode that is controlled H bridge is selected according to the relationship between TA and TB, to first switch tube, second
Switching tube, third switching tube and the 4th switching tube carry out temperature equalization control, and when power battery externally discharges, and control mould
Time Tn is arranged in the electric discharge that block obtains the electric discharge setting time Tm for controlling H bridge in the first way and controls H bridge in a second manner, and
According to Tm and Tn to H bridge carry out alternately control with to first switch tube, second switch, third switching tube and the 4th switching tube into
Trip temperature Balance route, so that the fever relative equilibrium of each switching tube, improves the working life of switching tube in H bridge, to prolong
The life cycle of long 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 (13)
1. a kind of control method of onboard charger of electric car, the onboard charger includes H bridge, and the H bridge is opened by first
Guan Guan, second switch, third switching tube and the 4th switching tube are constituted, which is characterized in that the control method includes following step
It is rapid:
When power battery of the onboard charger to the electric car charges, obtain described in control in the first way
Charging total time TA of H bridge and the charging total time TB for controlling the H bridge in a second manner, and judge charging total time TA
With the relationship between the charging total time TB；
The side controlled the H bridge is selected according to the relationship between the charging total time TA and the charging total time TB
Formula, to carry out temperature equalization control to the first switch tube, second switch, third switching tube and the 4th switching tube；
When the power battery of the electric car passes through the onboard charger every time externally to be discharged, obtain with first party
Formula controls the electric discharge setting time Tm of the H bridge and controls the electric discharge setting time Tn of the H bridge in a second manner；
According to Tm and Tn 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.
2. the control method of onboard charger of electric car as described in claim 1, which is characterized in that total according to the charging
Relationship between time TA and the charging total time TB selects the mode controlled the H bridge, specifically includes:
When charging total time TA being greater than the charging total time TB, the second method is selected to control the H bridge
System；
When charging total time TA being less than the charging total time TB, the first method is selected to control the H bridge
System；
When charging total time TA being equal to the charging total time TB, the first method or the second method pair are selected
The H bridge is controlled.
3. the control method of onboard charger of electric car as described in claim 1, which is characterized in that described according to Tm and Tn
Alternately control is carried out to the H bridge, comprising:
When the time for controlling the H bridge using the first method reaching Tm, the H bridge is carried out using the second method
Control, until reaching Tn 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 Tn, the H bridge is carried out using the first method
Control, until reaching Tm using the time that the first method controls the H bridge.
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 first 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 first switch tube and is in opening state always, and control the second switch 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 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.
5. 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.
6. the control method of onboard charger of electric car as described in claim 1, which is characterized in that with the first method
The electric discharge setting time Tm for controlling the H bridge, which is equal to, is arranged time Tn with the electric discharge that the second method controls the H bridge.
7. a kind of onboard charger of electric car, comprising: H bridge, the H bridge are switched by first switch tube, second switch, third
Pipe and the 4th switching tube are constituted, which is characterized in that the onboard charger further include:
Control module, the control module are used when power battery of the onboard charger to the electric car charges
In obtaining charging total time TA for controlling the H bridge in the first way and control charging total time of the H bridge in a second manner
TB, and judge the relationship between the charging total time TA and the charging total time TB, and according to the charging total time
Relationship between TA and the charging total time TB selects the mode that is controlled the H bridge, with to the first switch tube,
Second switch, third switching tube and the 4th switching tube carry out temperature equalization control, and in the power electric of the electric car
Pond, which is also used to obtain when externally being discharged by the onboard charger every time, to be controlled the electric discharge of the H bridge in the first way and sets
It sets time Tm and controls the electric discharge setting time Tn of the H bridge in a second manner, and the H bridge is replaced according to Tm and Tn
Control is to carry out temperature equalization control to the first switch tube, second switch, third switching tube and the 4th switching tube.
8. onboard charger of electric car as claimed in claim 7, which is characterized in that the control module is according to the charging
When the mode that the relationship selection between total time TA and the charging total time TB controls the H bridge, wherein
When charging total time TA being greater than the charging total time TB, the control module selects the second method to institute
H bridge is stated to be controlled；
When charging total time TA being less than the charging total time TB, the control module selects the first method to institute
H bridge is stated to be controlled；
When charging total time TA being equal to the charging total time TB, the control module selects the first method or institute
Second method is stated to control the H bridge.
9. onboard charger of electric car as claimed in claim 7, which is characterized in that the control module is according to Tm and Tn couples
When the H bridge alternately control, wherein
When the time for controlling the H bridge using the first method reaching Tm, the H bridge is carried out using the second method
Control, until reaching Tn 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 Tn, the H bridge is carried out using the first method
Control, until reaching Tm using the time that the first method controls the H bridge.
10. onboard charger of electric car as claimed in any one of claims 7-9, which is characterized in that the control module
When controlling the H bridge with the first method, 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 first switch tube and is in opening state always, and controls the second switch
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 third switching tube and is in opening state always, and controls the 4th switching tube
It is turned on and off in off state always, and the control first switch tube and the second switch alternating, complementary.
11. onboard charger of electric car as claimed in any one of claims 7-9, which is characterized in that the control module
When controlling the H bridge with the second method, 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.
12. onboard charger of electric car as claimed in claim 7, which is characterized in that control the H with the first method
The electric discharge setting time Tm of bridge, which is equal to, is arranged time Tn with the electric discharge that the second method controls the H bridge.
13. a kind of electric car, which is characterized in that fill including the electric car as described in any one of claim 7-12 is vehicle-mounted
Electric appliance.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510955965.0A CN106891738B (en) | 2015-12-18 | 2015-12-18 | The control method of electric car and its onboard charger and onboard charger |
| PCT/CN2016/110268 WO2017101835A1 (en) | 2015-12-18 | 2016-12-16 | Electric automobile, on-board charger thereof, and on-board charger control method |
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| CN103595274A (en) * | 2013-11-27 | 2014-02-19 | 东南大学 | Method for controlling double-direction power flow high-frequency isolated active clamping rectifier |
| CN104670040A (en) * | 2015-02-11 | 2015-06-03 | 南京航空航天大学 | Charging and driving integration topology structure of electric automobile |
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3904388B2 (en) * | 2000-12-04 | 2007-04-11 | 松下電器産業株式会社 | Control device for hybrid vehicle |
| JP4946749B2 (en) * | 2007-09-14 | 2012-06-06 | 三菱自動車工業株式会社 | Vehicle battery control device |
| CN104009528A (en) * | 2013-02-27 | 2014-08-27 | 上海海事大学 | Storage battery charging circuit and charging method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH08116604A (en) * | 1994-10-14 | 1996-05-07 | Suzuki Motor Corp | Battery charger for motor-driven vehicle |
| CN202443498U (en) * | 2011-09-21 | 2012-09-19 | 杜柏鑫 | Rental car storage battery intelligent management system |
| CN103595274A (en) * | 2013-11-27 | 2014-02-19 | 东南大学 | Method for controlling double-direction power flow high-frequency isolated active clamping rectifier |
| CN104670040A (en) * | 2015-02-11 | 2015-06-03 | 南京航空航天大学 | Charging and driving integration topology structure of electric automobile |
| 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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