CN207523446U - Hybrid vehicle and its dynamical system - Google Patents
Hybrid vehicle and its dynamical system Download PDFInfo
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- CN207523446U CN207523446U CN201720340393.XU CN201720340393U CN207523446U CN 207523446 U CN207523446 U CN 207523446U CN 201720340393 U CN201720340393 U CN 201720340393U CN 207523446 U CN207523446 U CN 207523446U
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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
- 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
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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
- 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
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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
- 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
- Y02T10/72—Electric energy management in electromobility
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Abstract
The utility model discloses a kind of hybrid vehicle and its dynamical system, wherein, dynamical system includes：The engine of the wheel of hybrid vehicle is output power to by clutch；Output driving force to the power motor of the wheel of hybrid vehicle；To the power battery of power motor power supply；DC DC converters；The auxiliary-motor being connected respectively with engine, power motor, DC DC converters and power battery；The regulator circuit being connected between auxiliary-motor and DC DC converters, it is exported during for generating electricity to auxiliary-motor to the direct current of DC DC converters and carries out voltage stabilizing processing, so as to which vehicle low speed electric equilibrium and low speed ride comfort can not only be maintained, it also is able to that the input voltage of DC DC converters is made to keep stablizing, ensures DC DC converters normal work.
Description
Technical field
The utility model is related to Development of HEV Technology fields, and in particular to a kind of dynamical system of hybrid vehicle
With a kind of hybrid vehicle.
Background technology
In hybrid vehicle, the voltage that electric power generation exports through inverter rectification to power battery charging, it is inverse at this time
Become device output end voltage it is uncontrolled, but because output terminal it is in parallel with power battery, power battery be equivalent to one it is huge
Capacitive load, voltage on main circuit can be stablized, in this way on the DC-DC converter of rear class influence with regard to very little.Moreover, high straightening
Low pressure such as 12V can be depressurized to by DC-DC converter by connecing powers to vehicle low-voltage electrical apparatus.
But for power battery once disconnecting, the voltage of electric power generation output will be uncontrollable, therefore electric power generation need to be exported
Voltage carry out voltage stabilizing, could give subsequently load use.Since the voltage fluctuation of inverter end is very big, motor exports anti-electronic
The amplitude and frequency of gesture can change with the variation (i.e. the rotation speed change of engine) of load.Such as during high rotating speed, counter electromotive force
Very high, the voltage of rectifying and voltage-stabilizing output is often very high.If using braking rectifier system, then once power battery disconnects, and it is defeated
The voltage gone out will be uncontrollable；If using uncontrollable rectification, loss will be very big.
Utility model content
One of the technical issues of the utility model is intended to solve at least to a certain extent in above-mentioned technology.
For this purpose, a purpose of the utility model is to propose a kind of dynamical system of hybrid vehicle.The dynamical system
System can not only maintain vehicle low speed electric equilibrium and low speed ride comfort, additionally it is possible to the input voltage of DC-DC converter be made to keep steady
It is fixed, ensure DC-DC converter normal work.
Another purpose of the utility model is to propose a kind of hybrid vehicle.
In order to achieve the above objectives, the utility model first aspect proposes a kind of dynamical system of hybrid vehicle, packet
It includes：Engine, the engine output power to the wheel of the hybrid vehicle by clutch；Power motor, institute
Power motor is stated for outputting driving force to the wheel of the hybrid vehicle；Power battery, the power battery are used to give
The power motor power supply；DC-DC converter；The auxiliary-motor being connected with the engine, the auxiliary-motor move respectively with described
Force motor, the DC-DC converter are connected with power battery；Regulator circuit, the regulator circuit be connected to the auxiliary-motor with
Between the DC-DC converter, the regulator circuit is exported when generating electricity to the auxiliary-motor to the direct current of the DC-DC converter
Electricity carries out voltage stabilizing processing.
The dynamical system of hybrid vehicle according to the present utility model, engine are output power to mixed by clutch
The wheel of power vehicle is closed, power motor outputs driving force to the wheel of hybrid vehicle, and power battery is supplied to power motor
Electricity, regulator circuit exports to the direct current of DC-DC converter when generating electricity to auxiliary-motor and carries out voltage stabilizing processing, so as to can not only maintain
Vehicle low speed electric equilibrium and low speed ride comfort promote vehicle performance, additionally it is possible to the input voltage of DC-DC converter be made to keep steady
It is fixed, ensure DC-DC converter normal work.
Further, the utility model proposes a kind of hybrid vehicle, including the above-mentioned mixing of the utility model
The dynamical system of power vehicle.
The hybrid vehicle of the utility model, can be in power battery by the dynamical system of above-mentioned hybrid vehicle
The input voltage of DC-DC converter is made to keep stablizing in the case of failure, ensures DC-DC converter normal work.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the utility model will in the description from combination accompanying drawings below to embodiment
Become apparent and be readily appreciated that, wherein：
Fig. 1 is the structure diagram according to the dynamical system of the hybrid vehicle of the utility model one embodiment；
Fig. 2 a are the structure diagrams of the dynamical system of the hybrid vehicle of the utility model one embodiment；
Fig. 2 b are the structure diagrams of the dynamical system of the hybrid vehicle of the utility model another embodiment；
Fig. 2 c are the structure diagrams of the dynamical system of the hybrid vehicle of the utility model another embodiment；
Fig. 3 is the structure diagram according to the regulator circuit of the utility model one embodiment；
Fig. 4 is the schematic diagram controlled according to the voltage stabilizing of the utility model one embodiment；
Fig. 5 is the structure diagram according to the dynamical system of the hybrid vehicle of one specific embodiment of the utility model；
And
Fig. 6 is the structure diagram according to the hybrid vehicle of the utility model embodiment.
Specific embodiment
The embodiment of the utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is the element of same or like function.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and it is not intended that the utility model
Limitation.
Below with reference to the accompanying drawings it describes the dynamical system of the hybrid vehicle proposed according to the utility model embodiment and mixes
Close power vehicle.
Fig. 1 is the structure diagram of the dynamical system of the hybrid vehicle of the utility model one embodiment.Such as Fig. 1 institutes
Show, the dynamical system of the hybrid vehicle includes：Engine 1, power motor 2, power battery 3, DC-DC converter 4, secondary electricity
Machine 5 and regulator circuit 6.
With reference to shown in Fig. 1-3, engine 1 outputs power to the wheel 8 of hybrid vehicle by clutch 7；Power
Motor 2 is used to output driving force to the wheel 8 of hybrid vehicle.That is, the dynamical system of the utility model embodiment
Power can be provided for hybrid vehicle normally travel by engine 1 and/or power motor 2, in other words, in the utility model
Some embodiments in, the power source of dynamical system can be engine 1 and power motor 2, in engine 1 and power motor 2
Any one can individually export power to wheel 8, alternatively, engine 1 and power motor 2 can export power to wheel 8 simultaneously.
Power battery 3 is used to power to power motor 2；Auxiliary-motor 5 is connected with engine 1, for example, auxiliary-motor 5 can pass through
The train end of engine 1 is connected with engine 1, auxiliary-motor 5 respectively with 3 phase of power motor 2, DC-DC converter 4 and power battery
Even.Regulator circuit 6 is connected between auxiliary-motor 5 and DC-DC converter 4, and regulator circuit 6 is exported when generating electricity to auxiliary-motor 5 to DC-
The direct current of DC converters 4 carries out voltage stabilizing processing, so that the voltage after stablizing gives vehicle low-voltage electrical apparatus by DC-DC converter 4
Power supply.In other words, after the electric energy exported when auxiliary-motor 5 generates electricity is by regulator circuit 6, output burning voltage supply DC-DC transformation
Device 4.
Power motor 2 and auxiliary-motor 5 can correspond to respectively as a result, serves as driving motor and generator, so as to electricity secondary during low speed
Machine 5 can have higher generated output and generating efficiency, so as to meet the power demand run at a low speed, maintain vehicle low speed level
Weighing apparatus maintains low speed ride comfort, promotes vehicle performance.And it is exported when can be generated electricity by regulator circuit 6 to auxiliary-motor 5 to DC-DC and become
The direct current of parallel operation 4 carries out voltage stabilizing processing, and the input voltage of DC-DC converter 4 is made to keep stablizing, so as to ensure that DC-DC is converted
Device works normally.
Further, when auxiliary-motor 5 is generated electricity under the drive of engine 1, it can be achieved that charge to power battery 3, to
Power motor 2 is powered, at least one of power supply of DC-DC converter 4.In other words, engine 1 can drive auxiliary-motor 5 to generate electricity,
The electric energy that auxiliary-motor 5 generates can be provided at least one of power battery 3, power motor 2 and DC-DC converter 4.It should manage
Solution, engine 1 can drive auxiliary-motor 5 to generate electricity, also auxiliary-motor 5 can individually be driven to send out while power is exported to wheel 8
Electricity.
Wherein, auxiliary-motor 5 can be BSG motors.It should be noted that auxiliary-motor 5 belongs to high-voltage motor, such as auxiliary-motor 5
Generating voltage it is suitable with the voltage of power battery 3, so as to which the electric energy that auxiliary-motor 5 generates can be without voltage transformation directly to dynamic
Power battery 3 charges, and can also power to power motor 2 and/or DC-DC converter 4.And auxiliary-motor 5 may belong to efficiency power generation
Machine, such as more than 97% generating efficiency can be realized in the power generation of drive auxiliary-motor 5 under 1 idling speed of engine.
It should be noted that regulator circuit 6 can be arranged on the output line of auxiliary-motor 5, auxiliary-motor 5 passes through regulator circuit
6 are connected respectively with power motor 2, power battery 3 and DC-DC converter 4, as shown in Fig. 2 b, 2c, at this point, when auxiliary-motor 5 generates electricity
Can burning voltage be exported by regulator circuit 6, realize and power, to DC- to 3 voltage stabilizing of power battery charging, to 2 voltage stabilizing of power motor
4 voltage stabilizing of DC converters is powered, and whether no matter power battery 3 and DC-DC converter 4 connect as a result, can guarantee that DC-DC is converted
Device 4 works normally.Regulator circuit 6 can also be arranged on the inlet wire of DC-DC converter 4, and auxiliary-motor 5 can respectively with DC-DC
Converter 4, power battery 3 connect, while power battery 3 can be connect with DC-DC converter 4, as shown in Figure 1, Figure 2 shown in a, as a result,
When power battery 3 and DC-DC converter 4 disconnect, auxiliary-motor 5, which is exported when generating electricity to the voltage of DC-DC converter 4, is still
Stable, and then ensure that DC-DC converter 4 works normally.
Further, auxiliary-motor 5 can be used for starting engine 1, i.e. auxiliary-motor 5 can realize the function of starting engine 1, example
Such as when starting engine 1, auxiliary-motor 5 can drive the crank rotation of engine 1, so that the piston of engine 1 reaches ignition position
It puts, so as to fulfill the startup of engine 1, thus auxiliary-motor 5 can realize the function of the starter motor in the relevant technologies.
As described above, engine 1 and power motor 2 are used equally for the wheel 8 of driving hybrid vehicle.For example, as schemed
Shown in 2a, 2b, engine 1 and power motor 2 jointly driving hybrid vehicle same wheel such as a pair of of front-wheel 81 (including
The near front wheel and off-front wheel)；For another example, as shown in Figure 2 c, before engine 1 can drive the first wheel such as a pair of hybrid vehicle
81 (including the near front wheels and off-front wheel) are taken turns, power motor 2 can drive the second wheel such as a pair of rear wheels 82 of hybrid vehicle
(including left rear wheel and off hind wheel).
In other words, when engine 1 and power motor 2 driving a pair of front-wheel 81 jointly, the driving force of dynamical system will be equal
To a pair of of front-wheel 81, vehicle uses two type of drive driven for output；When engine 1 drives a pair of of front-wheel 81 and power motor 2 drives
During dynamic a pair of rear wheels 82, the driving force of dynamical system will be exported respectively to a pair of of front-wheel 81 and a pair of rear wheels 82, and vehicle uses four
The type of drive of drive.
Further, under the type of drive driven two, with reference to shown in Fig. 2 a, Fig. 2 b, the dynamical system of hybrid vehicle,
9 and first speed changer 91 of main reducing gear is further included, wherein, engine 1 passes through clutch 7, the first speed changer 91, main reducing gear 9
For example a pair of of front-wheel 81 of the first wheel of hybrid vehicle is output power to, power motor 2 is exported by main reducing gear 9 and driven
For example a pair of of front-wheel 81 of the first wheel of power to hybrid vehicle.
Under the type of drive of 4 wheel driven, with reference to shown in Fig. 2 c, the dynamical system of hybrid vehicle further includes the first speed change
91 and second speed changer 92 of device, wherein, engine 1 outputs power to hybrid power by 7 and first speed changer 91 of clutch
For example a pair of of front-wheel 81 of first wheel of automobile, power motor 2 output driving force to hybrid power vapour by the second speed changer 92
Second wheel of vehicle such as a pair of rear wheels 82.
Wherein, clutch 7 can be integrally disposed with the first speed changer 91.
In the embodiment of the utility model, since the generating voltage of auxiliary-motor 5 is usually to be connected to the two of power battery 3
End, therefore when power battery 3 is connect with DC-DC converter 4, the voltage for being input to DC-DC converter 4 is stable.When dynamic
When power battery 3 fails or damages and disconnected with DC-DC converter 4, the exchange exported when generating electricity to auxiliary-motor 5 is needed at this time
Electricity is controlled, you can is exported when being generated electricity by regulator circuit 6 to auxiliary-motor 5 to the direct current of DC-DC converter 4 and is carried out voltage stabilizing
Processing.
In some embodiments of the utility model, as shown in figure 3, auxiliary-motor 5 includes auxiliary-motor controller 51, auxiliary-motor
Controller 51 includes inverter 511 and adjuster 512, and adjuster 512 is used to disconnect and DC-DC converter 4 when power battery 3
During connection, the first Regulate signal and the second Regulate signal are exported according to the output signal of regulator circuit 6, so that inverter 511 is defeated
The DC bus-bar voltage gone out keeps stablizing, wherein, the first Regulate signal is for being adjusted the d shaft currents of auxiliary-motor 5, and second
Regulate signal is used to that the q shaft currents of auxiliary-motor 5 to be adjusted.
Further, in some embodiments, as shown in figure 3, regulator circuit 6 includes first voltage sampler 61 and target
Voltage collector 62.The DC bus-bar voltage that first voltage sampler 61 exports inverter 511 is sampled to obtain first
Voltage sample value, and first voltage sampled value is exported to adjuster 512, target voltage collector 62 obtains object reference electricity
Pressure, and target reference voltage is sent to adjuster 512.Adjuster 512 is used to be adopted according to target reference voltage and first voltage
Voltage difference between sample value exports the first Regulate signal and the second Regulate signal.Wherein, the output signal of regulator circuit 6 includes
First voltage sampled value and target reference voltage.
Specifically, auxiliary-motor controller 51 is connected by regulator circuit 6 with DC-DC converter 4.Auxiliary-motor controller 51 is logical
It crosses inverter 511 and exports DC bus-bar voltage, first voltage sampler 61 carries out the DC bus-bar voltage that inverter 511 exports
Sampling is exported first voltage sampled value to adjuster 512 with obtaining first voltage sampled value.Target voltage collector 62 obtains
It takes target reference voltage, and target reference voltage is sent to adjuster 512, adjuster 512 is according to target reference voltage and the
Voltage difference between one voltage sample value exports the first Regulate signal and the second Regulate signal, by the first Regulate signal to pair
The d shaft currents of motor 5 are adjusted, and the q shaft currents of auxiliary-motor 5 are adjusted by the second Regulate signal, so as to auxiliary-motor
Controller 51 is when the disconnection of power battery 3 is connect with DC-DC converter 4 according to the d shaft currents and q shaft currents of auxiliary-motor 5 to inverse
Become device 511 to be controlled, the DC bus-bar voltage that inverter 511 exports is made to keep stablizing.
In some instances, PWM (Pulse Width Modulation, pulse modulation technology) may be used to inverter
511 are controlled, so that the DC bus-bar voltage that inverter 511 exports keeps stablizing.As shown in figure 4, adjuster 512 includes missing
Poor computing unit a, the first PID adjust unit b and the 2nd PID and adjust unit c.
Wherein, error calculation unit a is connected respectively with first voltage sampler 61 and target voltage collector 62, error meter
Unit a is calculated to obtain the voltage difference between target reference voltage and first voltage sampled value.First PID adjust unit b with
Error calculation unit a is connected, and the first PID adjusts voltage differences of the unit b between target reference voltage and first voltage sampled value
Value is adjusted to export the first Regulate signal.2nd PID adjusts unit c and is connected with error calculation unit a, and the 2nd PID is adjusted
Voltage differences of the unit c between target reference voltage and first voltage sampled value is adjusted to export the second Regulate signal.
Specifically, as shown in figure 4, first voltage sampler 61 in real time to inverter 511 export DC bus-bar voltage into
Row sampling is exported first voltage sampled value to Error Calculator a, target voltage collector with obtaining first voltage sampled value
62 obtain target reference voltage, and target reference voltage is exported to error calculation unit a.Error calculation unit a obtains target
Voltage difference between reference voltage and first voltage sampled value, and by the difference be separately input into the first PID adjust unit b and
2nd PID adjusts unit c, and adjusting unit b by the first PID exports the first Regulate signal (i.e. Id in Fig. 4*) and pass through second
PID adjusts unit c and exports the second Regulate signal (i.e. Iq in Fig. 4*).At this point, the three-phase current that auxiliary-motor 5 exports is through 3S/2R
Become d shaft current Id and q the shaft current Iq under dq coordinate systems after transformation, obtain Id respectively*With Id, Iq*The difference between Iq, and
The β axis electricity of α shaft voltage U α and auxiliary-motor 5 to obtain auxiliary-motor 5 is controlled by corresponding PID regulator difference respectively
Press U β；U α and U β are inputed into SVPWM modules, three-phase duty ratio is exported, inverter 511 is controlled by the duty ratio,
D shaft current Id and q the shaft current Iq of the output of auxiliary-motor 5 are adjusted by inverter 511, and then right again by first control signal
The d shaft currents of auxiliary-motor after adjustment are adjusted, and the q shaft currents of auxiliary-motor are adjusted again by the second Regulate signal
Section.The closed-loop control to auxiliary-motor d shaft currents and q shaft currents is formed as a result, and inverter 511 can be made by the closed-loop control
The DC bus-bar voltage of output keeps stablizing, i.e., is exported when auxiliary-motor 5 generates electricity to the DC voltage of DC-DC converter 4 and keep steady
It is fixed.
It should be noted that DC voltage and auxiliary-motor 5 output that inverter 511 exports in auxiliary-motor controller 51 is anti-
Electromotive force has certain correlation, and to ensure control efficiency, the voltage that inverter 511 exports can be set as to 3/2 phase voltage
When driving condition (i.e. maximum phase voltage be the 2/3 of DC bus-bar voltage).The DC voltage that inverter 511 exports as a result, and pair
5 rotating speed of motor is in certain relationship, and when 5 rotating speed of auxiliary-motor is higher, the DC voltage that inverter 511 exports is higher, 5 turns of auxiliary-motor
Speed is lower, and the DC voltage that inverter 511 exports is lower.
Further, in order to which the DC voltage that ensures to input DC-DC converter 4 is in predeterminated voltage section, in this practicality newly
In some embodiments of type, as shown in figure 3, regulator circuit 6 can also include voltage-stablizer 63, second voltage sampler 64 and voltage stabilizing
Controller 65.
Wherein, voltage-stablizer 63 is connected to the DC output end of inverter 511, and voltage-stablizer 63 exports inverter 511 straight
It flows busbar voltage and carries out voltage stabilizing processing, the input terminal of the output terminal connection DC-DC converter 4 of voltage-stablizer 63.Second voltage samples
Device 64 samples the output voltage of voltage-stablizer 63 to obtain second voltage sampled value.Voltage-stabilizing controller 65 respectively with voltage-stablizer
63 are connected with second voltage sampler 64, and voltage-stabilizing controller 65 is used for according to predetermined reference voltage and second voltage sampled value to steady
The output voltage of depressor 63 is controlled such that the output voltage of voltage-stablizer 63 is in predeterminated voltage section.
In some instances, switching mode regulator circuit may be used in voltage-stablizer 63, can not only such as BOOST booster circuits
Enough boostings, and control accuracy is high.Wherein, silicon carbide MOSFET, such as Infineon may be used in switching device in BOOST booster circuits
IMW120R45M1, can pressure resistance 1200V, internal resistance is 45m Ω, has a high pressure, the characteristics of internal resistance is small, and heat conductivility is good, than
The High Speed I GBT losses of similary specification want several ten times small.Infineon may be used in the driving chip of voltage-stablizer 63
1EDI60N12AF uses no core transformer to be isolated, and control is safe and reliable.It is appreciated that the driving chip can generate driving letter
Number.
In other examples, the BUCK-BOOST circuits of buck-boost type may be used in voltage-stablizer 63, can be at a high speed
When be depressured, when low speed, boosts, and control accuracy is high.
In other example, voltage-stablizer 63 can also use linear voltage-stabilizing circuit or three-terminal voltage-stabilizing circuit (such as LM317
With 7805 etc.).
It is appreciated that for ease of circuit design, the circuit structure of first voltage sampler 61 and second voltage sampler 64
Can be identical.For example, first voltage sampler 61 and second voltage sampler 64 may each comprise differential voltage circuit,
With precision height, and facilitate the characteristics of adjusting amplification factor.
Optionally, PWM dedicated modulation chip SG3525 may be used in voltage-stabilizing controller 65, with small, control letter
Singly, the characteristics of stable PWM wave being exported.
For example, the workflow of the dynamical system of above-mentioned hybrid vehicle is：Second voltage sampler 64 is to steady
The output voltage of depressor 63 is sampled to obtain second voltage sampled value, and second voltage sampled value is exported to chip
SG3525, chip SG3525 can set reference voltage, and reference voltage and second voltage sampled value are compared, in conjunction with
The triangular wave that chip SG3525 is generated can generate the PWM wave of two-way, and voltage-stablizer 63 is controlled such that by two-way PWM wave
Voltage-stablizer 63 exports to the voltage of DC-DC converter 4 and is in predeterminated voltage section, such as 11-13V, and thereby, it is possible to ensure that mixing is dynamic
The normal work of power automobile mesolow load.
It should be noted that if the DC bus-bar voltage of output is too low, second voltage sampled value is with regard to very little, then SG3525
The bigger PWM wave of duty can be sent out, to boost.
Auxiliary-motor 5 and DC-DC converter 4 have independent voltage stabilizing supplying channels all the way as a result, when power battery 3 breaks down,
, can be by auxiliary-motor 5 and the independent voltage stabilizing supplying channels of DC-DC converter 4 when disconnecting with the connection of DC-DC converter 4, it can be with
Ensure the low pressure electricity consumption of vehicle, it is ensured that vehicle can realize pure fuel oil pattern traveling, improve vehicle mileage travelled.
In a specific embodiment of the utility model, as shown in figure 5, power battery 3 damages, disconnect and becoming with DC-DC
During the connection of parallel operation 4, regulator circuit 6 is connected to the end of incoming cables of DC-DC converter 4.
Wherein, power motor 2 further includes second controller 21, and auxiliary-motor controller 51 is connected with second controller 21, and
It is connected by regulator circuit 6 with DC-DC converter 4.Auxiliary-motor 5 generates alternating current when generating electricity, and inverter 511 can be by auxiliary-motor 5
The convert alternating current that power generation generates is high voltage direct current such as 600V high voltage direct currents, is become with realizing to power motor 2, DC-DC
The power supply of at least one of parallel operation 4.
It is appreciated that second controller 21 can have DC-AC converter units, DC-AC converter units can be defeated by inverter 511
The high voltage direct current gone out is transformed to alternating current, power motor 4 to be given to charge.
Specifically, as shown in figure 5, the inverter 511 of auxiliary-motor controller 51 has the first DC terminal DC1, the second control
Device 21 has the second DC terminal DC2, and DC-DC converter 4 has third DC terminal DC3.First direct current of auxiliary-motor controller 51
End DC1 is connected by regulator circuit 6 with the third DC terminal DC3 of DC-DC converter 4, DC-DC converter 4 to be given to provide stabilization
Voltage, and DC-DC converter 4 can carry out DC-DC transformation to the direct current after voltage stabilizing.Also, the inversion of auxiliary-motor controller 51
Device 511 can also export high voltage direct current by the first DC terminal DC1 and power motor 2 be given to power to second controller 21.
Further, as shown in figure 5, DC-DC converter 4 also respectively with the electrical equipment 10 in hybrid vehicle and low
Pressure accumulator 20 is connected so that electrical equipment 10 and low tension battery 20 to be given to power, and low tension battery 20 also with 10 phase of electrical equipment
Even.
Specifically, as shown in figure 5, DC-DC converter 4 also has the 4th DC terminal DC4, DC-DC converter 4 can be by secondary electricity
Machine 5 is converted to low-voltage DC by the high voltage direct current that auxiliary-motor controller 51 exports, and passes through the 4th DC terminal DC4 outputs
The low-voltage DC.4th DC terminal DC4 of DC-DC converter 4 is connected with electrical equipment 10, to power for electrical equipment 10,
Wherein, electrical equipment 10 can be low voltage equipment, include but not limited to car light, radio etc..The of DC-DC converter 4
Four DC terminal DC4 can also be connected with low tension battery 20, to charge for low tension battery 20.Low tension battery 20 and electrical equipment
10 are connected, and electrical equipment 10 to be given to power, particularly, when auxiliary-motor 5 stops generating electricity, low tension battery 20 can be electrical equipment
10 power supplies, so as to ensure the low pressure electricity consumption of vehicle, it is ensured that vehicle can realize pure fuel oil pattern traveling, improve vehicle mileage travelled.
It should be noted that in the utility model embodiment, low pressure can refer to the voltage of 12V (volt) or 24V, and high pressure can refer to
The voltage of 600V, predeterminated voltage section can refer to 11~13V or 23~25V, but not limited to this.
To sum up, the dynamical system of the hybrid vehicle of the utility model embodiment can not only maintain vehicle low speed electric
Balance and low speed ride comfort, additionally it is possible to ensure DC- when disconnecting the connection with DC-DC converter in power battery failure or damage
DC converters work normally, and control accuracy is high, and loss is small.
Further, the utility model also proposed a kind of hybrid vehicle.
Fig. 6 is the structure diagram according to the hybrid vehicle of the utility model embodiment.As shown in fig. 6, hybrid power
Automobile 200 includes the dynamical system 100 of above-mentioned hybrid vehicle.
The hybrid vehicle of the utility model can not only maintain vehicle low speed electric equilibrium and low speed ride comfort, fully
Using the mechanical energy of motor, and the input voltage of DC-DC converter can be made to keep stablizing, ensure that DC-DC converter just
Often work, and loss is low, it is efficient.
In the description of the present invention, it is to be appreciated that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " suitable
The orientation or position relationship of the instructions such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " are based on orientation shown in the drawings
Or position relationship, be for only for ease of description the utility model and simplify description rather than instruction or imply signified device or
Element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that limit to the utility model
System.
In addition, term " first ", " second " are only used for description purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature." multiple " are meant that at least two, such as two in the description of the present invention,
It is a, three etc., unless otherwise specifically defined.
In the utility model unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integral；Can be
Mechanical connection or electrical connection；It can be directly connected, can also be indirectly connected by intermediary, can be two
The interaction relationship of connection or two elements inside element, unless otherwise restricted clearly.For the common skill of this field
For art personnel, concrete meaning of the above-mentioned term in the utility model can be understood as the case may be.
In the utility model unless specifically defined or limited otherwise, fisrt feature is "above" or "below" second feature
Can be that the first and second features are in direct contact or the first and second features pass through intermediary mediate contact.Moreover, first is special
Sign second feature " on ", " top " and " above " can be fisrt feature right over second feature or oblique upper or only
Represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be with
It is fisrt feature immediately below second feature or obliquely downward or is merely representative of fisrt feature level height less than second feature.
In the description of this specification, reference term " one embodiment ", " example ", " is specifically shown " some embodiments "
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
It states and is necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be with
It combines in an appropriate manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this field
Technical staff can by the different embodiments or examples described in this specification and the feature of different embodiments or examples into
Row combines and combination.
Although the embodiment of the utility model has been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it is impossible to be construed as a limitation of the present invention, those of ordinary skill in the art are in the scope of the utility model
It is interior to make changes, modifications, substitutions and variations to the above described embodiments.
Claims (13)
1. a kind of dynamical system of hybrid vehicle, which is characterized in that including：
Engine, the engine output power to the wheel of the hybrid vehicle by clutch；
Power motor, the power motor are used to output driving force to the wheel of the hybrid vehicle；
Power battery, the power battery are used to power to the power motor；
DC-DC converter；
The auxiliary-motor being connected with the engine, the auxiliary-motor respectively with the power motor, the DC-DC converter and dynamic
Power battery is connected；
Regulator circuit, the regulator circuit are connected between the auxiliary-motor and the DC-DC converter, the regulator circuit pair
It is exported during the auxiliary-motor power generation to the direct current of the DC-DC converter and carries out voltage stabilizing processing.
2. the dynamical system of hybrid vehicle as described in claim 1, which is characterized in that the auxiliary-motor includes auxiliary-motor
Controller, the auxiliary-motor controller include inverter and adjuster, the adjuster be used for when the power battery disconnect with
During the connection of the DC-DC converter, the first Regulate signal and second is exported according to the output signal of the regulator circuit and is adjusted
Signal, so that the DC bus-bar voltage of inverter output keeps stablizing, wherein, first Regulate signal is used for described
The d shaft currents of auxiliary-motor are adjusted, and second Regulate signal is used to that the q shaft currents of the auxiliary-motor to be adjusted.
3. the dynamical system of hybrid vehicle as claimed in claim 2, which is characterized in that the regulator circuit includes first
Voltage sample device and target voltage collector, the first voltage sampler to the DC bus-bar voltage that the inverter exports into
Row sampling is exported the first voltage sampled value to the adjuster, the target electricity with obtaining first voltage sampled value
Collector is pressed to obtain target reference voltage, and the target reference voltage is sent to the adjuster；
The adjuster is used to be exported according to the voltage difference between the target reference voltage and the first voltage sampled value
First Regulate signal and the second Regulate signal；
Wherein, the output signal of the regulator circuit includes first voltage sampled value and target reference voltage.
4. the dynamical system of hybrid vehicle as claimed in claim 3, which is characterized in that the regulator circuit further includes：
Voltage-stablizer, the voltage-stablizer are connected to the DC output end of the inverter, and the voltage-stablizer exports the inverter
DC bus-bar voltage carry out voltage stabilizing processing, the output terminal of the voltage-stablizer connects the input terminal of the DC-DC converter；
Second voltage sampler, the second voltage sampler sample the output voltage of the voltage-stablizer to obtain second
Voltage sample value；
Voltage-stabilizing controller, the voltage-stabilizing controller are connected respectively with the voltage-stablizer and the second voltage sampler, described steady
Pressure controller is used to control the output voltage of the voltage-stablizer according to predetermined reference voltage and the second voltage sampled value
System is so that the output voltage of the voltage-stablizer is in predeterminated voltage section.
5. the dynamical system of hybrid vehicle as claimed in claim 4, which is characterized in that the voltage-stablizer includes BOOST
Booster circuit.
6. the dynamical system of hybrid vehicle as claimed in claim 4, which is characterized in that the first voltage sampler and
The circuit structure of the second voltage sampler is identical.
7. the dynamical system of hybrid vehicle as claimed in claim 6, which is characterized in that the first voltage sampler and
The second voltage sampler includes differential voltage circuit.
8. the dynamical system of hybrid vehicle as claimed in claim 3, which is characterized in that the adjuster includes：
Error calculation unit, the error calculation unit respectively with the first voltage sampler and the target voltage collector
It is connected, the error calculation unit is obtaining the voltage difference between the target reference voltage and the first voltage sampled value
Value；
First PID adjusts unit, and the first PID adjusts unit and is connected with the error calculation unit, and the first PID is adjusted
Voltage difference of the unit between the target reference voltage and the first voltage sampled value is adjusted to be adjusted with exporting first
Save signal；
2nd PID adjusts unit, and the 2nd PID adjusts unit and is connected with the error calculation unit, and the 2nd PID is adjusted
Voltage difference of the unit between the target reference voltage and the first voltage sampled value is adjusted to be adjusted with exporting second
Save signal.
9. the dynamical system of hybrid vehicle as described in claim 1, which is characterized in that the auxiliary-motor is BSG motors.
10. the dynamical system of hybrid vehicle as described in claim 1, which is characterized in that the auxiliary-motor is in the hair
It when being generated electricity under the drive of motivation, realizes to the power battery charging, power, to the DC-DC to the power motor
At least one of converter power supply.
11. the dynamical system of hybrid vehicle as described in claim 1, which is characterized in that the regulator circuit is arranged on
On the output line of the auxiliary-motor, wherein, the auxiliary-motor by the regulator circuit respectively with the power motor, described dynamic
Power battery is connected with the DC-DC converter.
12. the dynamical system of hybrid vehicle as described in claim 1, which is characterized in that the regulator circuit is arranged on
On the inlet wire of the DC-DC converter, and the auxiliary-motor is connect respectively with the DC-DC converter, the power battery.
13. a kind of hybrid vehicle, which is characterized in that including the hybrid power vapour as described in any one of claim 1-12
The dynamical system of vehicle.
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| CN201720340393.XU CN207523446U (en) | 2017-03-31 | 2017-03-31 | Hybrid vehicle and its dynamical system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108656966A (en) * | 2017-03-31 | 2018-10-16 | 比亚迪股份有限公司 | Hybrid vehicle and its dynamical system |
| WO2019062878A1 (en) * | 2017-09-29 | 2019-04-04 | 比亚迪股份有限公司 | Hybrid vehicle and power system thereof |
-
2017
- 2017-03-31 CN CN201720340393.XU patent/CN207523446U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108656966A (en) * | 2017-03-31 | 2018-10-16 | 比亚迪股份有限公司 | Hybrid vehicle and its dynamical system |
| CN108656966B (en) * | 2017-03-31 | 2024-03-05 | 比亚迪股份有限公司 | Hybrid electric vehicle and power system thereof |
| WO2019062878A1 (en) * | 2017-09-29 | 2019-04-04 | 比亚迪股份有限公司 | Hybrid vehicle and power system thereof |
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