CN109600036A - The control method of power adapter, power conversion system and power adapter - Google Patents
The control method of power adapter, power conversion system and power adapter Download PDFInfo
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- CN109600036A CN109600036A CN201810642039.1A CN201810642039A CN109600036A CN 109600036 A CN109600036 A CN 109600036A CN 201810642039 A CN201810642039 A CN 201810642039A CN 109600036 A CN109600036 A CN 109600036A
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- 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
- H02M3/00—Conversion of dc power input into dc power output
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The application provides the control method of a kind of power adapter, power conversion system and power adapter.Power adapter includes power-switching circuit, high tension voltage control circuit, low voltage control circuit and driving circuit.Power-switching circuit is exported to receive high-voltage dc voltage from high-pressure side and high-voltage dc voltage is converted to low-voltage dc voltage to low-pressure side.High tension voltage control circuit is electrically coupled to high-pressure side, to detect high-voltage dc voltage and export first control signal according to high-voltage dc voltage.Low voltage control circuit is electrically coupled to low-pressure side, to detect low-voltage dc voltage and export second control signal according to low-voltage dc voltage.Driving circuit is selectively to control signal output drive signal driving power conversion circuit according to the first or second.
Description
Technical field
This application involves a kind of power conversion system more particularly to a kind of power supply on vehicle converting systems.
Background technique
Recently, with universal, electric vehicle (Electric of the exploitation with electric energy as a source of power of environmental consciousness
Vehicle, EV) or the electric hybrid vehicle (Hybrid Electric Vehicle, HEV) of oil replace using fossil fuel as power
Conventional truck, the important goal being increasingly becoming in automotive field.
However, when the generator end in vehicle electric system is with load end unbalanced supply-demand, it can be because of voltage instability
Start over-voltage or under-voltage protection mechanism causes system dependability to decline so that electric system stops working, and vehicle can not travel
Problem occurs.
Summary of the invention
One embodiment of present disclosure is a kind of power adapter.Power adapter includes power-switching circuit, height
Press voltage control circuit, low voltage control circuit and driving circuit.Power-switching circuit is to receive one from a high-pressure side
The high-voltage dc voltage is simultaneously converted to a low-voltage dc voltage and exported to a low-pressure side by high-voltage dc voltage.High tension voltage control
Circuit is electrically coupled to the high-pressure side, to detect the high-voltage dc voltage and according to one first control of high-voltage dc voltage output
Signal processed.Low voltage control circuit is electrically coupled to the low-pressure side, to detect the low-voltage dc voltage and according to the low pressure
One second control signal of direct voltage output.Driving circuit is to selectively according to the first control signal or second control
Signal exports a driving signal and drives the power-switching circuit.
In some embodiments, the high tension voltage control circuit is more to receive high tension voltage life from a processing circuit
It enables, to export the first control signal to the driving circuit, so that the driving circuit controls the height according to the high tension voltage order
Press DC voltage stability in a corresponding target voltage values.
In some embodiments, which includes: one first bleeder circuit, to the high voltage direct current
Voltage is divided to export first voltage detection signal；One first compensation circuit is electrically coupled to first bleeder circuit
Between the driving circuit, to receive first voltage detection signal；And one first comparison amplifier, this first compares and puts
One first end of big device to receive the high tension voltage order, a second end of first comparison amplifier be electrically coupled to this
One output end of one compensation circuit, first comparison amplifier is electrically coupled to the driving circuit.
In some embodiments, the low voltage control circuit is more to receive low voltage life from a processing circuit
It enables, to export the second control signal to the driving circuit according to the low voltage order, so as to control this low for the driving circuit
Press DC voltage stability in a corresponding target voltage values.
In some embodiments, which includes: one second bleeder circuit, to the low-voltage direct
Voltage is divided to export second voltage detection signal；One second compensation circuit is electrically coupled to second bleeder circuit
Between the driving circuit, to receive second voltage detection signal；And one second comparison amplifier, this second compares and puts
One first end of big device to receive the low voltage order, a second end of second comparison amplifier be electrically coupled to this
One output end of two compensation circuits, second comparison amplifier is electrically coupled to the driving circuit.
In some embodiments, power adapter also includes: an output current control circuit is electrically coupled to the low pressure
Side, to detect an output electric current of the power-switching circuit, and from one output current order of processing circuit reception, and according to
The output electric current and the output current order export a third and control signal.
In some embodiments, which includes: a current detection circuit, to according to output electricity
Stream one output electric current measure signal of output；One third compensation circuit, is electrically coupled to the current detection circuit and the driving circuit
Between, to receive the output electric current measure signal；And a third comparison amplifier, the one first of the third comparison amplifier
To receive the output current order, a second end of the third comparison amplifier is electrically coupled to the third compensation circuit at end,
One output end of the third comparison amplifier is electrically coupled to the driving circuit.
Another embodiment of present disclosure is a kind of power conversion system.Power conversion system includes DC generation
Mechanical, electrical power-switching circuit, high tension voltage control circuit, low voltage control circuit, processing circuit and driving circuit.Direct current hair
Motor is to export a high-voltage dc voltage.High-pressure side electric property coupling dc generator of power-switching circuit, to will
The high-voltage dc voltage is converted to a low-voltage dc voltage and exports to a low-pressure side of the power-switching circuit.High tension voltage control
Circuit is electrically coupled to the high-pressure side, to detect the high-voltage dc voltage and accordingly export a first control signal.Low tension
Pressure control circuit is electrically coupled to the low-pressure side, to detect the low-voltage dc voltage and accordingly export a second control signal.
Processing circuit is low with this to the high tension voltage control circuit with a low voltage order to export a high tension voltage order respectively
Voltage control circuit is pressed, to control whether the high tension voltage control circuit and the low voltage control circuit start.Driving circuit,
Power supply conversion electricity is driven selectively to export a driving signal according to the first control signal or the second control signal
Road.
In some embodiments, high tension voltage control circuit includes: one first bleeder circuit, to the high voltage direct current
Pressure is divided to export first voltage detection signal；One first compensation circuit, be electrically coupled to first bleeder circuit with
Between the driving circuit, to receive first voltage detection signal；And one first comparison amplifier, this first compares amplification
One first end of device to receive the high tension voltage order, a second end of first comparison amplifier be electrically coupled to this first
One output end of compensation circuit, first comparison amplifier is electrically coupled to the driving circuit.
In some embodiments, which includes: one second bleeder circuit, to the low-voltage direct
Voltage is divided to export second voltage detection signal；One second compensation circuit is electrically coupled to second bleeder circuit
Between the driving circuit, to receive second voltage detection signal；And one second comparison amplifier, this second compares and puts
One first end of big device to receive the low voltage order, a second end of second comparison amplifier be electrically coupled to this
One output end of two compensation circuits, second comparison amplifier is electrically coupled to the driving circuit.
In some embodiments, power conversion system also includes: a high-pressure side energy storage device, is electrically coupled to direct current hair
This of motor and the power-switching circuit high-pressure side.It is different in the high-pressure side energy storage device and the dc generator uncoupling or generation
Chang Shi, the processing circuit control the high tension voltage control circuit according to the high-voltage electricity to export the corresponding high tension voltage order
Pressure order exports the first control signal to the driving circuit, so that the driving circuit controls the high-voltage dc voltage and stablizes in phase
The target voltage values answered.
In some embodiments, in the high-pressure side energy storage device and the dc generator uncoupling or when being abnormal, at this
Reason circuit more controls low voltage control circuit closing to export the corresponding low voltage order.
In some embodiments, power conversion system also includes: an output current control circuit is electrically coupled to the low pressure
Side to detect an output electric current of the power-switching circuit, and exports a third according to the output electric current and controls signal.At this
Circuit is managed to export current order, to control whether the output current control circuit starts, which is more used
The driving signal is exported selectively to control signal according to the first control signal, the second control signal or the third.
In some embodiments, when high-pressure side energy storage device operation is normal, the processing circuit is corresponding to export
The high tension voltage order, the low voltage order and the output current order, it is defeated with this to control the low voltage control circuit
Current control circuit one of wherein starting out.
In some embodiments, when the low voltage control circuit starts, the low voltage control circuit is to basis
The low voltage order exports the second control signal to the driving circuit, so that the driving circuit controls the low-voltage dc voltage
Stablize in a corresponding target voltage values, which closes according to the corresponding output current order.
In some embodiments, when the output current control circuit starts, the output current control circuit is to basis
The output current order exports third control signal to the driving circuit, so that the driving circuit controls the outputting current steadily
In a corresponding target current value, which closes according to the corresponding low voltage order.
In some embodiments, when high-pressure side energy storage device operation is normal, the high tension voltage control circuit is according to phase
The high tension voltage order answered is closed.
In some embodiments, which includes: a current detection circuit, to according to output electricity
Stream one output electric current measure signal of output；One third compensation circuit, is electrically coupled to the current detection circuit and the driving circuit
Between, to receive the output electric current measure signal；And a third comparison amplifier, the one first of the third comparison amplifier
To receive the output current order, a second end of the third comparison amplifier is electrically coupled to the third compensation circuit at end,
One output end of the third comparison amplifier is electrically coupled to the driving circuit.
The another embodiment of present disclosure is a kind of control method of power adapter.The controlling party of power adapter
Method includes: by a power-switching circuit, by an on high-tension side high-voltage dc voltage be converted to a low-voltage dc voltage export to
One low-pressure side；By a processing circuit, selectively starting is electrically coupled to the on high-tension side high tension voltage control circuit or electricity
Property is coupled to a low voltage control circuit of the low-pressure side；When high tension voltage control circuit starting, pass through the high-voltage electricity
Control circuit is pressed, the high-voltage dc voltage is detected and accordingly exports a first control signal；It is opened in the low voltage control circuit
When dynamic, by the low voltage control circuit, detect the low-voltage dc voltage and accordingly export a second control signal；And by
One drive circuit exports a driving signal according to the first control signal or the second control signal and drives power supply conversion electricity
Road to control the high-voltage dc voltage corresponding to the first control signal, or controls the low pressure corresponding to the second control signal
DC voltage.
In some embodiments, the control method of power adapter also includes: in being coupled to an on high-tension side high-pressure side
Energy storage device and a dc generator uncoupling or when being abnormal, the through this process corresponding high tension voltage order of circuit output
To the high tension voltage control circuit；By the high tension voltage control circuit, which is exported according to the high tension voltage order and is believed
Number to the driving circuit；And by the driving circuit, which is controlled according to the first control signal and is stablized in phase
The target voltage values answered.
Detailed description of the invention
Fig. 1 is the schematic diagram of the power conversion system according to depicted in the application section Example.
Fig. 2A and Fig. 2 B is respectively that the operation of the power adapter according to depicted in present disclosure section Example is illustrated
Figure.
Fig. 3 is the schematic diagram of the power conversion system according to depicted in the application other parts embodiment.
Fig. 4 A~Fig. 4 C is respectively the operation signal of the power adapter according to depicted in present disclosure section Example
Figure.
Fig. 5 is the flow chart of the control method of the power adapter according to depicted in present disclosure section Example.
Description of symbols:
100 power conversion systems
110 dc generators
120 power adapters
122 power-switching circuits
124 high tension voltage control circuits
126 low voltage control circuits
127 output current control circuits
128 driving circuits
130 high-pressure side energy storage devices
140 processing circuits
150 low-pressure side energy storage devices
170 low-voltage load devices
210,230RC filter circuit
220,260 bleeder circuit
240,280,290 compensation circuit
270 current detection circuits
900 control methods
S910, S920, S930, S940, S950 step
V1 high-voltage dc voltage
V2 low-voltage dc voltage
R1~R10 resistance
OP1~OP3 comparison amplifier
D1, D2, D3 rectifier cell
Io exports electric current
PWM driving signal
CT1~CT3 controls signal
HVcmd, HVdis high tension voltage order
LVcmd, LVdis low voltage order
Icmd, Idis export current order
Vd1, Vd2 voltage detection signal
Vd3 output electric current measure signal
Specific embodiment
It is hereafter to elaborate for embodiment cooperation Detailed description of the invention book attached drawing, to more fully understand the embodiment party of the application
Formula, but provided embodiment is not the range covered to limit the disclosure, and the description of structure operation is non-to limit
Its sequence executed, any structure reconfigured by element, the produced device with impartial technical effect, is all the disclosure
The range covered.In addition, according to the standard and practice of industry, attached drawing is only for the purpose of aiding in illustrating, and not according to original
Size mapping, the size of actually various features can be increased or decreased arbitrarily in order to illustrate.Similar elements in following the description
It will be illustrated with identical symbology in order to understanding.
The word (terms) used in full piece specification and claim usually has each in addition to having and especially indicating
Word using in this area, in content disclosed herein with the usual meaning in special content.It is certain to describe the disclosure
Word by it is lower or this specification other places discuss, to provide those skilled in the art's volume in the description in relation to the disclosure
Outer guidance.
In addition, word "comprising", " comprising ", " having ", " containing " etc. used in herein, are open
Term means " including but not limited to ".In addition, used herein " and/or ", comprising one or more in associated listed items
Any one and its all combination of a project.
In this article, it when an element referred to as " connects " or " coupling ", can refer to " to be electrically connected " or " electric property coupling ".
" connection " or " coupling " also can be used to indicate to be collocated with each other operation or interaction between two or multiple element.Although in addition, making herein
With " first ", " second " ... wait terms to describe different elements, the term be only to distinguish with same technique term describe member
Part or operation.It is indicated unless context understands, otherwise order or cis-position are not especially censured or implied to the term, also non-to limit
The fixed present invention.
Please refer to Fig. 1.Fig. 1 is the schematic diagram of the power conversion system 100 according to depicted in the application section Example.Such as
Shown in Fig. 1, in some embodiments, power conversion system 100 includes dc generator 110, power adapter 120, high-pressure side
Energy storage device 130, processing circuit 140, low-pressure side energy storage device 150 and low-voltage load device 170.In some embodiments,
Power conversion system 100 can be used for an electric vehicle (Electric Vehicle, EV) or the electric hybrid vehicle (Hybrid of oil
Electric Vehicle, HEV) in system, by the cooperating of power adapter 120 and processing circuit 140, by high pressure
The high-voltage dc voltage V1 that the dc generator 110 of side exports is converted to low-voltage dc voltage V2, and it is defeated to provide output electric current Io
Out to the low-pressure side energy storage device 150 of low-pressure side and low-voltage load device 170.Therefore, it just can provide various in onboard system
Electric power needed for equipment.
For example, in some embodiments, the high-voltage dc voltage V1 of the exportable about 48V of dc generator 110.Power supply
Converter 120 can be converted into the low-voltage dc voltage V2 of for example, about 12V, with sound system vehicle, the Che Shang on supply car
The electricity needs of electronic device such as drive recorder etc..It is worth noting that, above-mentioned numerical value and application are by way of example only, and
It is non-to limit the application.
As shown in Figure 1, power adapter 120 includes power-switching circuit 122, high tension voltage control circuit in structure
124, low voltage control circuit 126 and driving circuit 128.The high-pressure side electric property coupling direct current of power-switching circuit 122 is sent out
Motor 110, the low-pressure side electric property coupling low-pressure side energy storage device 150 and low-voltage load device 170 of power-switching circuit 122,
And it exports high-voltage dc voltage V1 is converted to low-voltage dc voltage V2 to the low-pressure side of power-switching circuit 122.
In some embodiments, high tension voltage control circuit 124 is electrically coupled to high-pressure side, to detect high voltage direct current
It presses V1 and accordingly exports first control signal CT1.On the other hand, low voltage control circuit 126 is electrically coupled to low-pressure side, uses
To detect low-voltage dc voltage V2 and accordingly output second control signal CT2.
Driving circuit 128 is electrically coupled to high tension voltage control circuit 124 and low voltage control circuit 126, to
Selectively according to first control signal CT1 or second control signal CT2 output drive signal PWM driving power conversion circuit
122。
Specifically, power-switching circuit 122 can be realized by various switch type DC DC (DC-DC) conversion circuits.
For example, power-switching circuit 122 can be buck (Buck Converter), lifting dual-purpose type (Buck-Boost
) etc. Converter realize.The exportable driving signal PWM of driving circuit 128, Switching power turns in a manner of pulse width modulation
Change the switching switch conduction in circuit 122 and shutdown.Therefore, it by adjusting the responsibility cycle of driving signal PWM, can control
The time span of switching switch conduction in complete cycle in power-switching circuit 122, and then control the behaviour of power adapter 120
Make.
In some embodiments, Yu Tongyi time point, high tension voltage control circuit 124 and low voltage control circuit 126
The two only has one of them starting.In other words, when high tension voltage control circuit 124 starts and exports first control signal CT1
When, low voltage control circuit 126 is accordingly closed.On the other hand, when low voltage control circuit 126 starts and exports the second control
When signal CT2 processed, high tension voltage control circuit 124 is accordingly closed.
It is worth noting that, driving circuit 128 can also be realized selectively in other parts embodiment with other modes
Receive first control signal CT1 or second control signal CT2.Although in the embodiment shown in fig. 1, high tension voltage control circuit
124 and low voltage control circuit 126 concurrent is coupled to driving circuit 128 each other, but in other parts embodiment, power supply
The also settable switch of converter 120, and by switch selectivity by first control signal CT1 and second control signal CT2
When one of output to driving circuit 128.In other parts embodiment, driving circuit 128 can also pass through different foot positions point
Not Jie Shou first control signal CT1 and second control signal CT2, and judged by the internal circuit of driving circuit 128 according to what
The responsibility cycle of person's adjustment driving signal PWM.Therefore, Fig. 1 is only one of possible implementation of present disclosure, not
To limit the application.
As shown in Figure 1, power conversion system 100 can by processing circuit 140 control high tension voltage control circuit 124 with it is low
126 whichever of voltage control circuit starting whichever is pressed to close, and according to corresponding bid value to the voltage electricity of high-voltage dc voltage V1
Flat or low-voltage dc voltage V2 voltage level is controlled.
Specifically, processing circuit 140 is electrically connected at high tension voltage control circuit 124 and low voltage control circuit
126.Processing circuit 140 exports high tension voltage order HVcmd and low voltage order LVcmd to the voltage-controlled circuit processed of high-voltage electricity respectively
124 with low voltage control circuit 126, to control whether high tension voltage control circuit 124 and low voltage control circuit 126 open
It is dynamic.
As shown in Figure 1, the high-pressure side of power adapter 120 and low-pressure side can be respectively coupled to high-pressure side energy storage device 130, low
Press side energy storage device 150 to carry out necessary electric power compensation.In some embodiments, high-pressure side energy storage device 130, low-pressure side storage
Energy device 150 can be realized by energy-storage battery.For example, low-pressure side energy storage device 150 is electrically coupled to low-voltage load device 170
And the low-pressure side of power-switching circuit 122.When low-voltage load device 170 is at light load, low-pressure side energy storage device 150 can be inhaled
Receive the additional power that power adapter 120 exports.In this way, work as, low-voltage load device 170 is in when overloaded or power supply turns
When electric power needed for parallel operation 120 is not enough to supply low-voltage load device 170, low-pressure side energy storage device 150 can export stored
Electric power to low-voltage load device 170, to maintain the equilibrium of supply and demand in electric system.
Similarly, high-pressure side energy storage device 130 is electrically coupled to dc generator 110 and power-switching circuit 122
High-pressure side.Therefore, high-pressure side energy storage device 130 also can for dc generator 110 output to power adapter 120 electric power into
Row is adjusted, to maintain the stabilization of high-voltage dc voltage V1 on high-pressure side.
However, when high-pressure side energy storage device 130 and 110 uncoupling of dc generator or when being abnormal, high-pressure side energy storage dress
High-voltage dc voltage V1 on high-pressure side can not be adjusted by setting 130.For example, under the low temperature environment of pole.High-tension battery may be because
Lead to not work for low temperature.In this situation, if the load end of low-pressure side acutely changes, the response of dc generator 110 compared with
Slowly, it is not enough to the output power of timely adjustment generator, the high-voltage dc voltage V1 overvoltage being easy to cause on high-pressure side owes electricity
Situations such as pressure or on high-tension side electric current overcurrent, occurs, so that protective loop corresponding actions, and then cause system operatio different
Often, situations such as such as power-supply system stops working.
In order to avoid above situation generation, in present disclosure section Example, in high-pressure side energy storage device 130 and directly
When flowing 110 uncoupling of generator or being abnormal, the exportable corresponding high tension voltage order HVcmd of processing circuit 140 controls high pressure
Voltage control circuit 124 exports first control signal CT1 to driving circuit 128, so that driving according to high tension voltage order HVcmd
Circuit 128 controls high-voltage dc voltage V1 and stablizes in corresponding target voltage values.Therefore, overvoltage or over current protection can be avoided
Protection mechanism starting.
For ease of illustration for the sake of, the cooperating of power adapter 120 and processing circuit 140 will arrange in pairs or groups Fig. 2A and Fig. 2 B into
Row explanation.Please refer to Fig. 2A and Fig. 2 B.Fig. 2A and Fig. 2 B is respectively the power supply according to depicted in present disclosure section Example
The operation chart of converter 120.
As shown in Fig. 2A and Fig. 2 B, in some embodiments, high tension voltage control circuit 124 includes bleeder circuit 220, mends
Repay circuit 240, comparison amplifier OP1 and rectifier cell D1.In structure, bleeder circuit 220 is electrically coupled to high-pressure side, uses
To be divided high-voltage dc voltage V1 with voltage sense signal Vd1.For example, bleeder circuit 220 may include that
This concatenated divider resistance R1, R2.By selecting divider resistance R1, R2 resistance value appropriate, bleeder circuit 220 can be divided
And the voltage detection signal Vd1 with appropriate voltage range is exported, for the operation of late-class circuit.
In some embodiments, compensation circuit 240 is electrically coupled between bleeder circuit 220 and driving circuit 128, to
Receive voltage detection signal Vd1.The first end (such as: negative pole end) of comparison amplifier OP1 is electrically coupled to processing circuit 140, uses
To receive high tension voltage order HVcmd.The second end (such as: positive terminal) of comparison amplifier OP1 is electrically coupled to compensation circuit
240.The output end of comparison amplifier OP1 is electrically coupled to driving circuit 128 by rectifier cell D1, to export the first control
Signal CT1.
In some embodiments, rectifier cell D1 can be realized by diode.As shown in Fig. 2A, Fig. 2 B, rectifier cell
The anode tap of D1 is coupled to driving circuit 128, and the cathode terminal of rectifier cell D1 is coupled to the output end of comparison amplifier OP1.
As shown in the figure, compensation circuit 240 may include resistance R3 and resistance R4, but present disclosure not as
Limit.In other embodiments, compensation circuit 240 may include the resistor being electrically connected in a variety of manners and capacitor to form RC
Circuit.In Fig. 2A, Fig. 2 B illustrated embodiment, one end of resistance R3 is electrically coupled to bleeder circuit 220, other end electric property coupling
In the second end (such as: positive terminal) of comparison amplifier OP1.One end of resistance R4 is electrically coupled to the second of comparison amplifier OP1
It holds (such as: positive terminal), the other end is electrically coupled to the output end of comparison amplifier OP1.
Similarly, in some embodiments, low voltage control circuit 126 also may include corresponding bleeder circuit 260, mend
Repay circuit 280 and comparison amplifier OP2.In structure, bleeder circuit 260 is electrically coupled to low-pressure side, to low-pressure direct
Galvanic electricity pressure V2 is divided with voltage sense signal Vd2.For example, bleeder circuit 260 may include point being one another in series
Piezoresistance R5, R6.By selecting divider resistance R5, R6 resistance value appropriate, bleeder circuit 260, which can be divided and be exported, to be had
The voltage detection signal Vd2 of appropriate voltage range, for the operation of late-class circuit.
In some embodiments, compensation circuit 280 is electrically coupled between bleeder circuit 260 and driving circuit 128, to
Receive voltage detection signal Vd2.The first end (such as: positive terminal) of comparison amplifier OP2 is electrically coupled to processing circuit 140, uses
To receive low voltage order LVcmd.The second end (such as: negative pole end) of comparison amplifier OP2 is electrically coupled to compensation circuit
280.The output end of comparison amplifier OP2 is electrically coupled to driving circuit 128 by rectifier cell D2, to export the second control
Signal CT2.
In some embodiments, rectifier cell D2 can be realized by diode.As shown in Fig. 2A, Fig. 2 B, rectifier cell
The anode tap of D2 is coupled to driving circuit 128, and the cathode terminal of rectifier cell D2 is coupled to the output end of comparison amplifier OP2.
As shown in the figure, compensation circuit 280 may include resistance R7 and resistance R8, but present disclosure not as
Limit.Similar to compensation circuit 240, in other embodiments, compensation circuit 280 also may include the electricity being electrically connected in a variety of manners
Device and capacitor are hindered to form RC circuit.In Fig. 2A, Fig. 2 B illustrated embodiment, one end of resistance R7 is electrically coupled to partial pressure electricity
Road 260, the other end are electrically coupled to the second end (such as: negative pole end) of comparison amplifier OP2.One end of resistance R8 is electrically coupled to
The second end (such as: negative pole end) of comparison amplifier OP2, the other end is electrically coupled to the output end of comparison amplifier OP2.
As shown in Figure 2 A, operationally, it in high-pressure side energy storage device 130 and 110 uncoupling of dc generator or is abnormal
When, the exportable corresponding high tension voltage order HVcmd of processing circuit 140.At this point, high tension voltage control circuit 124 can be from processing
Circuit 140 receives high tension voltage order HVcmd, to export first control signal CT1 to driving according to high tension voltage order HVcmd
Circuit 128, so that driving circuit 128 controls high-voltage dc voltage V1 and stablizes in corresponding target voltage values.
Specifically, as shown in Figure 2 A, high tension voltage order HVcmd can first pass through RC filter circuit 210 and be filtered.Through
Reference voltage input comparison amplifier OP1 of the filtered high tension voltage order HVcmd as high tension voltage control circuit 124
Negative pole end.In this way, comparison amplifier OP1 can be according to the voltage error signal of positive terminal and negative pole end, compensation electricity of arranging in pairs or groups
The output of road 240 controls signal CT1 to driving circuit 128.
For example, in some embodiments, the output end of comparison amplifier OP1 is electrically coupled to driving circuit 128
Vcomp foot position.When high-voltage dc voltage V1 is correspondinglyd increase because of backend load mitigation, the voltage detection signal of feedback is divided
Vd1 is also correspondinglyd increase.The voltage value of Vcomp foot position correspondinglys increase at this time, so that the driving signal PWM that driving circuit 128 exports
Responsibility cycle improve.In this way, which the output power of power adapter 120 increases accordingly, energy can be transported to rear class
Low-pressure side energy storage device 150 causes overvoltage protection mechanism to start to control high-voltage dc voltage V1 and will not further increase.
Correspondingly, processing circuit 140 exports corresponding low voltage order LVdis control low voltage control circuit at this time
126 close.For example, the LVdis of low voltage order at this time can be set as the voltage commands corresponding to maximum output voltage.So
One, the circuit in low voltage control circuit 126 just will not act the voltage value for influencing Vcomp foot position.
On the other hand, as shown in Figure 2 B, operationally, when high-pressure side energy storage device 130 operates normal, processing circuit
140 exportable corresponding low voltage order LVcmd.At this point, low voltage control circuit 126 can be received from processing circuit 140
Low voltage order LVcmd is made with exporting second control signal CT2 to driving circuit 128 according to low voltage order LVcmd
The control of driving circuit 128 low-voltage dc voltage V2 is obtained to stablize in corresponding target voltage values.
Specifically, as shown in Figure 2 B, low voltage order LVcmd can first pass through RC filter circuit 230 and be filtered.Through
Reference voltage input comparison amplifier OP2 of the filtered low voltage order LVcmd as low voltage control circuit 126
Positive terminal.In this way, comparison amplifier OP2 can be according to the voltage error signal of positive terminal and negative pole end, compensation electricity of arranging in pairs or groups
The output of road 280 controls signal CT2 to driving circuit 128.
For example, in some embodiments, the output end of comparison amplifier OP2 is electrically coupled to driving circuit 128
Vcomp foot position.When low-voltage dc voltage V2 is improved, the voltage detection signal Vd2 for dividing feedback is also correspondinglyd increase.Due to feedback
Voltage detection signal Vd2 be exporting to the negative pole end of comparison amplifier OP2, the voltage value of Vcomp foot position accordingly drops at this time
It is low, so that the responsibility cycle for the driving signal PWM that driving circuit 128 exports reduces.In this way, low-voltage dc voltage V2 just with
Decline, by low-voltage dc voltage V2 control correspond to low voltage order LVcmd voltage level.
Correspondingly, processing circuit 140 exports high tension voltage order HVdis at this time, to control high tension voltage control circuit 124
It is closed according to corresponding high tension voltage order HVdis.For example, the HVdis of high tension voltage order at this time can be set as zero.Such one
Come, the circuit in high tension voltage control circuit 124 just will not act the voltage value for influencing Vcomp foot position.
In addition, as shown in the figure, since rectifier cell D1, D2 are reversely connected respectively in comparison amplifier OP1, OP2, high tension voltage
Control circuit 124 and low voltage control circuit 126 will not interfere with each other influence when operation, lead to abnormal operation.Tool
For body, when carrying out high tension voltage control, high tension voltage control circuit 124 can pass through rectifier cell D1, bleeder circuit 220 and benefit
It repays circuit 240 and is formed by 128 conducting electric current of current path driving circuit, with high tension voltage order HVcmd control of arranging in pairs or groups
The voltage value of Vcomp foot position.
Similarly, when carrying out low voltage control, low voltage control circuit 126 can pass through rectifier cell D2, partial pressure electricity
Road 260 and compensation circuit 280 are formed by 128 conducting electric current of current path driving circuit, with low voltage order of arranging in pairs or groups
The voltage value of LVcmd control Vcomp foot position.Since rectifier cell D1, D2 are reversely connected each other, high tension voltage control circuit 124
Current path will not be generated between low voltage control circuit 126 to cause interference with.It is worth noting that, implementing in other parts
In example, if high tension voltage control circuit 124 and low voltage control circuit 126 and non-concurrent point, driving circuit 128 is otherwise
When selecting control model, the output end of comparison amplifier OP1, OP2 can also be coupled directly to switch or driving circuit 128 not
With foot position, without avoiding signal interference by rectifier cell D1, D2.Therefore, circuit depicted in Fig. 2A, Fig. 2 B is only and shows
Example, not to limit the application.
In this way, which processing circuit 140 can export high tension voltage order and low voltage order respectively, to control high pressure
Whether voltage control circuit 124 starts with low voltage control circuit 126.
When high tension voltage control circuit 124 starts, power adapter 120 is detected by high tension voltage control circuit 124
High-voltage dc voltage V1 simultaneously accordingly exports first control signal CT1, so that driving circuit 128 is defeated according to first control signal CT1
Driving signal PWM driving power conversion circuit 122 out, to control high-voltage dc voltage V1 corresponding to first control signal CT1.In
When low voltage control circuit 126 starts, power adapter 120 detects low-voltage DC by low voltage control circuit 126
It presses V2 and accordingly exports second control signal CT2, so that driving circuit 128 is according to second control signal CT2 output drive signal
PWM driving power conversion circuit 122, to control low-voltage dc voltage V2 corresponding to second control signal CT2.
It therefore, just can be in high-pressure side energy storage device 130 and 110 uncoupling of dc generator or when being abnormal, by high straightening
Galvanic electricity presses V1 to stablize in corresponding target voltage values, and high-voltage dc voltage V1 is avoided to cause the mistake of system to be grasped beyond safe range
Make.
Please refer to Fig. 3.Fig. 3 is the signal of the power conversion system 100 according to depicted in the application other parts embodiment
Figure.In Fig. 3, similar components related with the embodiment of Fig. 1 are indicated with the same references in order to understand, and similar
The concrete principle of element is described in detail in previous paragraph, if not the interelement with Fig. 3 is necessary with Collaboration relationship
The person of introduction repeats no more in this.
As shown in figure 3, the embodiment with Fig. 1 is compared, in some embodiments, power adapter 120 be can further include
Output current control circuit 127.Output current control circuit 127 is electrically coupled to low-pressure side, to detect power-switching circuit
122 output electric current Io, and signal CT3 is controlled according to output electric current Io output third.In the present embodiment, driving circuit 128
More selectively to control signal CT3 output driving letter according to first control signal CT1, second control signal CT2 or third
Number PWM.
Specifically, in the present embodiment, processing circuit 140 is more to export current order Icmd, with control
Whether output current control circuit 127 starts.Therefore, power adapter 120 can be operated according to the control of processing circuit 140
In high tension voltage control model, low voltage control model, or output current control mode three any one of works as, with root
It is accordingly controlled according to current system mode.
As described in the previous embodiments, in high-pressure side energy storage device 130 and 110 uncoupling of dc generator or when being abnormal,
Power adapter 120 is operable in high tension voltage control model.On the other hand, when high-pressure side energy storage device 130 operates normal,
Processing circuit 140 can control the operation of power adapter 120 in low voltage control model or output electric current according to actual needs
Control model.
For ease of illustration for the sake of, the cooperating of power adapter 120 and processing circuit 140 will arrange in pairs or groups Fig. 4 A~Fig. 4 C into
Row explanation.Please refer to Fig. 4 A~Fig. 4 C.Fig. 4 A~Fig. 4 C is respectively the power supply according to depicted in present disclosure section Example
The operation chart of converter 120.In Fig. 4 A~Fig. 4 C, related similar components are with phase with the embodiment of Fig. 2A, Fig. 2 B
Same reference label indicates in order to understand, and the concrete principle of similar components is described in detail in previous paragraph, if not with
The interelement of Fig. 4 A~Fig. 4 C necessity person of introduction with Collaboration relationship, repeats no more in this.
As shown in Fig. 4 A~Fig. 4 C, in some embodiments, output current control circuit 127 includes current detection circuit
270, compensation circuit 290, comparison amplifier OP3 and rectifier cell D3.Current detection circuit 270 is electrically coupled to low-pressure side,
To export an output electric current measure signal Vd3 according to output electric current Io.For example, in some embodiments, current detecting
Circuit 270 can be realized by current sense resistor.
Compensation circuit 290 is electrically coupled between current detection circuit 270 and driving circuit 128, to receive output electricity
Stream detection signal Vd3.The first end of comparison amplifier OP3 is to receive the of output current order Icmd, comparison amplifier OP3
Two ends are electrically coupled to compensation circuit 290, and the output end of comparison amplifier OP3 is electrically coupled to driving electricity by rectifier cell D3
Road 128.As described in the previous embodiments, in some embodiments, rectifier cell D3 can be realized by diode.Such as Fig. 4 A~figure
Shown in 4C~Fig. 4 C, the anode tap of rectifier cell D3 is coupled to driving circuit 128, and the cathode terminal of rectifier cell D3, which is coupled to, to be compared
The output end of amplifier OP3.In other words, the anode tap of rectifier cell D1, D2, D3 is coupled to each other, to ensure to export current control
Current path will not be generated between circuit 127 and high tension voltage control circuit 124 and low voltage control circuit 126 to be caused to do
It disturbs.Since the operation of rectifier cell D3 is similar to the operation of rectifier cell D1, D2 in preceding embodiment, therefore its details is not then at this
It repeats.
As shown in the figure, compensation circuit 290 may include resistance R9 and resistance R10, but present disclosure not as
Limit.In other embodiments, compensation circuit 290 may include the resistor being electrically connected in a variety of manners and capacitor to form RC
Circuit.One end of resistance R9 is electrically coupled to current detection circuit 270, and the other end is electrically coupled to the of comparison amplifier OP3
Two ends (such as: negative pole end).One end of resistance R10 is electrically coupled to the second end (such as: negative pole end) of comparison amplifier OP3, another
End is electrically coupled to the output end of comparison amplifier OP3.
As shown in Figure 4 A, in high-pressure side energy storage device 130 and 110 uncoupling of dc generator or when being abnormal, power supply turns
Parallel operation 120 is operable in high tension voltage control model.At this point, processing circuit 140 exports high tension voltage order HVcmd, so that than
Compared with amplifier OP1 according to the voltage error signal of positive terminal and negative pole end, compensation circuit 240 of arranging in pairs or groups output control signal CT1 is extremely
Driving circuit 128.
Correspondingly, processing circuit 140 exports corresponding low voltage order LVdis and output current order Idis at this time
It controls low voltage control circuit 126 and output current control circuit 127 is closed.For example, output current order Idis with
Low voltage order LVdis is similar, can be set as the current order corresponding to maximum output current.In this way, which low tension is voltage-controlled
Circuit 126 processed just will not act the voltage value for influencing Vcomp foot position with the circuit in output current control circuit 127.It is specific
Details of operation is repeated no more with being described in detail in preceding embodiment in this.
As shown in Figure 4 B, when high-pressure side energy storage device 130 operates normal, power adapter 120 is selectively operable
In low voltage control model.At this point, processing circuit 140 exports low voltage order LVcmd, so that comparison amplifier OP2 root
According to the voltage error signal of positive terminal and negative pole end, compensation circuit 280 of arranging in pairs or groups output control signal CT2 to driving circuit 128.
Correspondingly, processing circuit 140 exports corresponding high tension voltage order HVdis and output current order Idis at this time
It controls high tension voltage control circuit 124 and output current control circuit 127 is closed.Its concrete operations details is in preceding embodiment
Middle detailed description, therefore repeated no more in this.
As shown in Figure 4 C, when high-pressure side energy storage device 130 operates normal, power adapter 120 is also optionally grasped
Make in output current control mode.At this point, processing circuit 140 exports current order Icmd, so that comparison amplifier OP3
According to the voltage error signal of positive terminal and negative pole end, compensation circuit 290 of arranging in pairs or groups output control signal CT3 to driving circuit 128.
Therefore, when output current control circuit 127 starts, output current control circuit 127 can be according to output electric current
Icmd output third is ordered to control signal CT3 to driving circuit 128, so that the control output of driving circuit 128 electric current Io stablizes
Target current value corresponding with output current order Icmd.Detailed operation and low tension due to output current control circuit 127
Press the negative feedback control in control circuit 126 substantially similar, therefore its details is not repeated then at this.
Correspondingly, processing circuit 140 exports corresponding high tension voltage order HVdis and low voltage order at this time
LVdis controls high tension voltage control circuit 124 and low voltage control circuit 126 is closed.Its concrete operations details Yu Xianqian
It is described in detail in embodiment, therefore is repeated no more in this.
In this way, in Fig. 3 and Fig. 4 A~Fig. 4 C illustrated embodiment, in high-pressure side energy storage device 130 and DC generation
110 uncoupling of machine or when being abnormal, processing circuit 140 to export corresponding high tension voltage order, low voltage order with it is defeated
Current order out, to control the starting of high tension voltage control circuit 124, low voltage control circuit 126 and output current control electricity
Road 127 is closed, and high-voltage dc voltage V1 is stablized in corresponding target voltage values.
When high-pressure side energy storage device 130 operates normal, processing circuit 140 to export corresponding high tension voltage order,
Low voltage order and output current order, to control low voltage control circuit 126 and output current control circuit 127 wherein
One of starting, by low-voltage dc voltage V2 stablize in corresponding target voltage values, or will output electric current Io stablize corresponding
Target current value.
Please refer to Fig. 5.Fig. 5 is the controlling party of the power adapter 120 according to depicted in present disclosure section Example
The flow chart of method 900.For convenience of and clear explanation for the sake of, the control method 900 of following power adapters 120 be cooperation Fig. 1~
Fig. 4 C illustrated embodiment is illustrated, and but not limited to this, anyone skilled in the art, do not depart from spirit herein and
In range, when can to make it is various variation and retouching.As shown in figure 5, the control method 900 of power adapter 120 includes step
S910, S920, S930, S940 and S950.
Firstly, by power-switching circuit 122, on high-tension side high-voltage dc voltage V1 is converted to low in step S910
Pressure DC voltage V2 is exported to low-pressure side.
In step S920, by processing circuit 140, selectively starting is electrically coupled on high-tension side high tension voltage control
Circuit 124 or the low voltage control circuit 126 for being electrically coupled to low-pressure side.
For example, in some embodiments, in high-pressure side energy storage device 130 and 110 uncoupling of dc generator or generation
When abnormal, corresponding high tension voltage order HVcmd can be exported by processing circuit 140 to the voltage-controlled starting of circuit 124 processed of high-voltage electricity
High tension voltage control circuit 124.
When high tension voltage control circuit 124 starts, S930 is entered step.It is voltage-controlled by high-voltage electricity in step S930
Circuit 124 processed detects high-voltage dc voltage V1 and accordingly exports first control signal CT1.For example, high tension voltage control electricity
It road 124 can be according to voltage detection signal Vd1 detected and high tension voltage order HVcmd output first control signal CT1 to drive
Dynamic circuit 128.
When low voltage control circuit 126 starts, S940 is entered step.It is voltage-controlled by low tension in step S940
Circuit 126 processed detects low-voltage dc voltage V2 and accordingly exports second control signal CT2.For example, low voltage control electricity
It road 126 can be according to voltage detection signal Vd2 detected and low voltage order LVcmd output second control signal CT2 to drive
Dynamic circuit 128.
Finally, in step S950, it is defeated according to first control signal CT1 or second control signal CT2 by driving circuit 128
Driving signal PWM driving power conversion circuit 122 out, to control high-voltage dc voltage V1 corresponding to first control signal CT1, or
Low-voltage dc voltage V2 is controlled corresponding to second control signal CT2.
It in other words, can be by driving circuit 128, according to the in step S950 when high tension voltage control circuit 124 starts
One control signal CT1 control high-voltage dc voltage V1 stablizes in corresponding target voltage values.It is opened in low voltage control circuit 126
When dynamic, low-voltage dc voltage V2 can be controlled in step S950 according to second control signal CT2 and stablized by driving circuit 128
Corresponding target voltage values.
It is worth noting that, in some embodiments, step S920 can further include by processing circuit 140, selectivity
The low voltage control electricity that ground starting is electrically coupled on high-tension side high tension voltage control circuit 124, is electrically coupled to low-pressure side
Road 126 or the output current control circuit 127 for being electrically coupled to low-pressure side.When output current control circuit 127 starts, pass through
Output current control circuit 127, detection output electric current Io and accordingly output third control signal CT3.In step S950, driving
Circuit 128 more controls signal CT3 output drive signal PWM driving power conversion circuit 122 according to third, to correspond to third control
Signal CT3 control output electric current Io processed.Its particular content is repeated no more with being described in detail in previous paragraph in this.
It include illustrative step in above-mentioned content.However these steps not necessarily sequentially execute.In this implementation
The step of mentioned in mode, can adjust its tandem according to actual needs, or even can be same in addition to especially chatting its bright sequence person
When or part be performed simultaneously.
How skilled artisan can be directly acquainted with this control method 900 based on above-mentioned multiple and different embodiments
In power conversion system 100 to execute grade operation and function, therefore no longer this is repeated.
In conclusion in each embodiment of present disclosure, in high-pressure side energy storage device 130 and dc generator 110
Uncoupling or when being abnormal, exports corresponding high tension voltage order HVcmd by processing circuit 140 and controls high tension voltage control electricity
Road 124 exports first control signal CT1 to driving circuit 128, so that driving circuit 128 is controlled according to high tension voltage order HVcmd
High-voltage dc voltage V1 processed stablizes in corresponding target voltage values, and overvoltage or over current protection protection mechanism can be avoided to start.Such as
This one, under the situation that high-tension battery extraordinary failure or pole low temperature environment cause high-tension battery that can not work, power adapter
120 can active stabilization high voltage power supply, it is ensured that electric vehicle or the electric hybrid vehicle of oil can be with normally travels, and then improve system dependability.
Although present disclosure is disclosed as above with embodiment, so it is not limited to present disclosure, Ren Heben
Field technical staff, in the spirit and scope for not departing from present disclosure, when various variations and retouching, therefore the disclosure can be made
The protection scope of content is subject to view appended claims institute defender.
Claims (20)
1. a kind of power adapter, includes:
One power-switching circuit, to receive a high-voltage dc voltage from a high-pressure side and the high-voltage dc voltage is converted to one
Low-voltage dc voltage is exported to a low-pressure side；
One high tension voltage control circuit, is electrically coupled to the high-pressure side, to detect the high-voltage dc voltage and according to the high pressure
One first control signal of direct voltage output；
One low voltage control circuit, is electrically coupled to the low-pressure side, to detect the low-voltage dc voltage and according to the low pressure
One second control signal of direct voltage output；And
One drive circuit drives selectively to export a driving signal according to the first control signal or the second control signal
Move the power-switching circuit.
2. power adapter as described in claim 1, wherein the high tension voltage control circuit from a processing circuit more to connect
A high tension voltage order is received, to export the first control signal to the driving circuit, so that the drive according to the high tension voltage order
Dynamic circuit control high-voltage dc voltage is stablized in a corresponding target voltage values.
3. power adapter as claimed in claim 2, wherein the high tension voltage control circuit includes:
One first bleeder circuit, to be divided to the high-voltage dc voltage to export first voltage detection signal；
One first compensation circuit is electrically coupled between first bleeder circuit and the driving circuit, to receive first electricity
Pressure detection signal；And
One first comparison amplifier, a first end of first comparison amplifier is to receive the high tension voltage order, this first
One second end of comparison amplifier is electrically coupled to first compensation circuit, an output end electrical property coupling of first comparison amplifier
It is connected to the driving circuit.
4. power adapter as described in claim 1, wherein the low voltage control circuit from a processing circuit more to connect
A low voltage order is received, to export the second control signal to the driving circuit, so that the drive according to the low voltage order
Dynamic circuit control low-voltage dc voltage is stablized in a corresponding target voltage values.
5. power adapter as claimed in claim 4, wherein the low voltage control circuit includes:
One second bleeder circuit, to be divided to the low-voltage dc voltage to export second voltage detection signal；
One second compensation circuit is electrically coupled between second bleeder circuit and the driving circuit, to receive second electricity
Pressure detection signal；And
One second comparison amplifier, a first end of second comparison amplifier is to receive the low voltage order, this second
One second end of comparison amplifier is electrically coupled to second compensation circuit, an output end electrical property coupling of second comparison amplifier
It is connected to the driving circuit.
6. power adapter as described in claim 1, also includes:
One output current control circuit is electrically coupled to the low-pressure side, to detect an output electric current of the power-switching circuit,
And an output current order is received from a processing circuit, and a third control is exported according to the output electric current and the output current order
Signal processed；
Wherein the driving circuit according to the first control signal, the second control signal or the third more selectively to control
Signal exports the driving signal.
7. power adapter as claimed in claim 6, wherein the output current control circuit includes:
One current detection circuit, to export an output electric current measure signal according to the output electric current；
One third compensation circuit, is electrically coupled between the current detection circuit and the driving circuit, to receive output electricity
Stream detection signal；And
One third comparison amplifier, a first end of the third comparison amplifier is to receive the output current order, the third
One second end of comparison amplifier is electrically coupled to the third compensation circuit, an output end electrical property coupling of the third comparison amplifier
It is connected to the driving circuit.
8. a kind of power conversion system, includes:
One dc generator, to export a high-voltage dc voltage；
One power-switching circuit, high-pressure side electric property coupling dc generator of the power-switching circuit, to by the high pressure
DC voltage is converted to a low-voltage dc voltage and exports to a low-pressure side of the power-switching circuit；
One high tension voltage control circuit, is electrically coupled to the high-pressure side, to detect the high-voltage dc voltage and accordingly export one
First control signal；
One low voltage control circuit, is electrically coupled to the low-pressure side, to detect the low-voltage dc voltage and accordingly export one
Second control signal；
One processing circuit, to export a high tension voltage order and a low voltage order respectively to the high tension voltage control circuit
With the low voltage control circuit, to control whether the high tension voltage control circuit and the low voltage control circuit start；With
And
One drive circuit drives selectively to export a driving signal according to the first control signal or the second control signal
Move the power-switching circuit.
9. power conversion system as claimed in claim 8, wherein the high tension voltage control circuit includes:
One first bleeder circuit, to be divided to the high-voltage dc voltage to export first voltage detection signal；
One first compensation circuit is electrically coupled between first bleeder circuit and the driving circuit, to receive first electricity
Pressure detection signal；And
One first comparison amplifier, a first end of first comparison amplifier is to receive the high tension voltage order, this first
One second end of comparison amplifier is electrically coupled to first compensation circuit, an output end electrical property coupling of first comparison amplifier
It is connected to the driving circuit.
10. power conversion system as claimed in claim 8, wherein the low voltage control circuit includes:
One second bleeder circuit, to be divided to the low-voltage dc voltage to export second voltage detection signal；
One second compensation circuit is electrically coupled between second bleeder circuit and the driving circuit, to receive second electricity
Pressure detection signal；And
One second comparison amplifier, a first end of second comparison amplifier is to receive the low voltage order, this second
One second end of comparison amplifier is electrically coupled to second compensation circuit, an output end electrical property coupling of second comparison amplifier
It is connected to the driving circuit.
11. power conversion system as claimed in claim 8, also includes:
One high-pressure side energy storage device is electrically coupled to the dc generator and the high-pressure side of the power-switching circuit；
Wherein in the high-pressure side energy storage device and the dc generator uncoupling or when being abnormal, the processing circuit is to output phase
The high tension voltage order answered controls the high tension voltage control circuit and exports the first control signal according to the high tension voltage order
To the driving circuit, so that the driving circuit controls the high-voltage dc voltage and stablizes in a corresponding target voltage values.
12. power conversion system as claimed in claim 11, wherein in the high-pressure side energy storage device and the dc generator solution
When joining or being abnormal, which more controls the low voltage control circuit to export the corresponding low voltage order
It closes.
13. power conversion system as claimed in claim 11, also includes:
One output current control circuit is electrically coupled to the low-pressure side, to detect an output electric current of the power-switching circuit,
And a third is exported according to the output electric current and controls signal；
Wherein the processing circuit is to export current order, should to control whether the output current control circuit starts
Driving circuit more should selectively to control signal output according to the first control signal, the second control signal or the third
Driving signal.
14. power conversion system as claimed in claim 13, wherein when high-pressure side energy storage device operation is normal, the processing
Circuit is to export the corresponding high tension voltage order, the low voltage order and the output current order, to control the low pressure
One of the wherein starting of voltage control circuit and the output current control circuit.
15. power conversion system as claimed in claim 13, wherein when low voltage control circuit starting, the low tension
Press control circuit to export the second control signal to the driving circuit, so that the driving circuit according to the low voltage order
It controls the low-voltage dc voltage to stablize in a corresponding target voltage values, the output current control circuit is according to the corresponding output
Current order is closed.
16. power conversion system as claimed in claim 13, wherein when output current control circuit starting, output electricity
Flow control circuit is to export third control signal to the driving circuit, so that the driving circuit according to the output current order
The outputting current steadily is controlled in a corresponding target current value, the low voltage control circuit is according to the corresponding low voltage
Order is closed.
17. power conversion system as claimed in claim 13, wherein when high-pressure side energy storage device operation is normal, the high pressure
Voltage control circuit is closed according to the corresponding high tension voltage order.
18. power conversion system as claimed in claim 13, wherein the output current control circuit includes:
One current detection circuit, to export an output electric current measure signal according to the output electric current；
One third compensation circuit, is electrically coupled between the current detection circuit and the driving circuit, to receive output electricity
Stream detection signal；And
One third comparison amplifier, a first end of the third comparison amplifier is to receive the output current order, the third
One second end of comparison amplifier is electrically coupled to the third compensation circuit, an output end electrical property coupling of the third comparison amplifier
It is connected to the driving circuit.
19. a kind of control method of power adapter, includes:
By a power-switching circuit, an on high-tension side high-voltage dc voltage is converted into a low-voltage dc voltage and is exported to one low
Press side；
By a processing circuit, selectively starting is electrically coupled to the on high-tension side high tension voltage control circuit or electric property coupling
In a low voltage control circuit of the low-pressure side；
When high tension voltage control circuit starting, by the high tension voltage control circuit, the high-voltage dc voltage and phase are detected
A first control signal should be exported；
When low voltage control circuit starting, by the low voltage control circuit, the low-voltage dc voltage and phase are detected
A second control signal should be exported；And
By one drive circuit, a driving signal is exported according to the first control signal or the second control signal, the power supply is driven to turn
Circuit is changed, to control the high-voltage dc voltage corresponding to the first control signal, or should corresponding to second control signal control
Low-voltage dc voltage.
20. the control method of power adapter as claimed in claim 19, also includes:
When being coupled to the on high-tension side high-pressure side energy storage device and a dc generator uncoupling or being abnormal, by this
The corresponding high tension voltage order of circuit output is managed to the high tension voltage control circuit；
By the high tension voltage control circuit, which is exported to the driving circuit according to the high tension voltage order；With
And
By the driving circuit, which is controlled according to the first control signal and is stablized in a corresponding target voltage
Value.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US16/149,152 US10574138B2 (en) | 2017-10-03 | 2018-10-02 | Power converter, power converting system, and power converter control method |
| US16/745,313 US10886856B2 (en) | 2017-10-03 | 2020-01-16 | Power converter and power converter control method |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201762567593P | 2017-10-03 | 2017-10-03 | |
| US62/567,593 | 2017-10-03 |
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| CN109600036B CN109600036B (en) | 2020-08-25 |
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| CN201810642039.1A Active CN109600036B (en) | 2017-10-03 | 2018-06-21 | Power converter, power conversion system and control method of power converter |
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| CN (1) | CN109600036B (en) |
| TW (1) | TWI680633B (en) |
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| CN112350578A (en) * | 2019-08-06 | 2021-02-09 | 台达电子工业股份有限公司 | Power converter and control method thereof |
| CN113193751A (en) * | 2020-01-14 | 2021-07-30 | 群光电能科技股份有限公司 | Power supply conversion system |
| CN113193751B (en) * | 2020-01-14 | 2024-05-10 | 群光电能科技股份有限公司 | Power conversion system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109600036B (en) | 2020-08-25 |
| TWI680633B (en) | 2019-12-21 |
| TW201916561A (en) | 2019-04-16 |
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