CN208006697U - Hybrid power automobile power system - Google Patents
Hybrid power automobile power system Download PDFInfo
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- CN208006697U CN208006697U CN201820423364.4U CN201820423364U CN208006697U CN 208006697 U CN208006697 U CN 208006697U CN 201820423364 U CN201820423364 U CN 201820423364U CN 208006697 U CN208006697 U CN 208006697U
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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
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract
The utility model discloses a kind of hybrid power automobile power systems comprising engine, first motor, the second motor, speed changer and double clutch.The hybrid power automobile power system of the utility model, it is integrated by two motors and three shift transmissions, it can realize all hybrid power functions, and motor is driven with two gears, engine is driven with three gears, it disclosure satisfy that the dynamic property and economy of vehicle, smooth gear shifting can also be realized by the speed governing of two motors in shift, and plug-in hybrid-power automobile (PHEV) is can be applied to, non-plug-in hybrid-power automobile (HEV) can also be applied to.
Description
Technical field
The utility model is related to belong to Development of HEV Technology field, it is related to a kind of dynamical system of hybrid vehicle
System is related specifically to a kind of using two motors and an engine-driven hybrid power system.
Background technology
Present hybrid system mainly has two big technical systems, and one is single motor P2 configuration schemes, and motor, which is located at, to be become
In front of fast device, for clutch between engine and motor, such scenario-frame is simple, to conventional power system change amount compared with
It is small, it is easy commercialization, but the more volume of conventional transmissions gear is larger, it is larger with the integrated rear axial dimension of motor, it is not easy to
Arrangement, in addition, single motor scheme driving start engine when control it is relatively difficult, need control front clutch sliding wear and
On the one hand the sliding wear of DCT clutches ensures that engine successfully starts up, on the other hand ensure that the torque for being transmitted to wheel section is not mutated
Prevent vehicle from shrugging one's shoulders；Another scheme is the bi-motor planetary gear system using Toyota Prius as representative, this system has been applied
Arrived on product and achieved immense success, but this system there is also some disadvantages, such as engine must band in driving
Dynamic electrical power generators, energy secondary loss are more.
To solve the above-mentioned problems, a kind of entitled " power control system and controlling party of double-motor hybrid vehicle
The patent document (application number 200710302297.7) of method " discloses a kind of double-motor hybrid power system, and main includes one
The synchronizing device of engine, two motors, a clutch, a connection engine and first motor, electric machine controller, BMS,
TCU etc. does not include speed changer, and structure and control are fairly simple, due to there is no speed changer demand Motor torque larger, Er Qiewu
Method adjusts the operating point of engine and motor, and economy can be caused poor.
Utility model content
The utility model aim is to provide a kind of hybrid power automobile power system, and which solve the knots of hybrid power system
Structure arrangement, performance and control problem.
The utility model solves technical problem and adopts the following technical scheme that：A kind of hybrid power automobile power system, packet
Include engine, first motor, the second motor, speed changer and double clutch；
The speed changer includes first gear to, second gear to, three gear gear mesh and transmission output shaft, wherein a gear
Gear mesh by one gear power input gear and one gear power output gear form, second gear to by two gear power input gears and
Two gear power output gear compositions, three gear gear mesh are made of three gear power input gears and three gear power output gears；It is described
One gear power output gear, two gear power output gears and three gear power output gears are coaxially fixed on the speed changer output
On axis；
The engine and the rotor of the first motor are rigidly connected, the master of the first motor and the double clutch
Moving plate is rigidly connected by the first input shaft, and the three gears power input gear is rotatablely arranged at first input shaft
On, and fixed with the first driven disc of the double clutch；Second driven disc of the double clutch and second motor
Rotor be sequentially connected by the second input shaft, and it is described two gear power input gear and one gear power input gear can turn
It is dynamic to be set on second input shaft, and gearshift, the shift of the speed changer are provided on second input shaft
Power is selectively transferred to a gear power input gear or two gear power input gears by mechanism.
Optionally, the engine, first motor, the second motor, the first input shaft and the second input shaft are coaxial design,
The first motor and second motor are located at the both sides of the speed changer.
Optionally, the first motor and the second motor are permanent magnet synchronous motor or AC induction motor.
Optionally, the speed ratio product ranging from 6-8 of gear a speed ratio and main reducing gear of the speed changer；Two gear speed ratios and master
Speed ratio the product ranging from 4.5-5.5, the speed ratio product ranging from 3-4 of three gear speed ratios and main reducing gear of retarder.
Optionally, the hybrid power automobile power system further includes first motor controller, the second electric machine controller, moves
Power battery, battery management system, engine controller, gearbox controller and hybrid controller；
The power battery is connect by first motor controller with the first motor circuit, and also passes through the second electricity
Machine controller is connect with second motor circuit；
The engine controller is connect with hybrid controller signal, for controlling engine and monitoring engine
State, and engine condition information is passed into hybrid controller by CAN bus；
The battery management system is connect with hybrid controller signal, passes through CAN buses for battery relevant information
Pass to the hybrid controller；
The first motor controller and the equal signal of the second electric machine controller are connected to the hybrid controller, are used for
Under the control of the hybrid controller, control first motor and the rotation of the second motor respectively, and in first motor and
When second motor is in generating state, to power battery charging；And respectively by the relevant information of first motor and the second motor
Hybrid controller is sent to by CAN bus；
The gearbox controller signal is connected to the hybrid controller, for controlling the double clutch and institute
The gear shifting action of speed changer is stated, and the relevant information of speed changer and double clutch is passed into the mixing by CAN bus and is moved
Force controller；
The relevant control of engine is instructed and is sent to the engine control by CAN bus by the hybrid controller
The control instruction of the first motor is sent to the first motor controller, the hybrid power by device processed by CAN bus
The control instruction of second motor is sent to second electric machine controller by controller by CAN bus.
The utility model has the advantages that：The hybrid power automobile power system of the utility model passes through two
Motor and three shift transmissions are integrated, and can realize all hybrid power functions, and motor is driven with two gears,
Engine is driven with three gears, disclosure satisfy that the dynamic property and economy of vehicle, passes through the speed governing of two motors in shift
It can also realize smooth gear shifting, and can be applied to plug-in hybrid-power automobile (PHEV), non-plug-in can also be applied to
Formula hybrid vehicle (HEV).
Description of the drawings
Fig. 1 is the structural schematic diagram of the hybrid power automobile power system of the utility model；
Fig. 2 is shift schematic diagram when the second motor is operated alone under electric-only mode；
(abscissa n is rotating speed to first motor power bound schematic diagram, and ordinate T is to turn round when Fig. 3 is pure electric vehicle driving
Square)；
(abscissa n is rotating speed to the second power of motor bound schematic diagram, and ordinate T is to turn round when Fig. 4 is pure electric vehicle driving
Square)；
Lower torque limit schematic diagram when Fig. 5 is engine driving (abscissa n is rotating speed, and ordinate T is torque)；
The mark in the figure shows：1- engines；2- first motors；The second motors of 3-；4- double clutches；5- gearshifts；
6- tri- keeps off power input gear；7- tri- keeps off power output gear；8- bis- keeps off power input gear；9- bis- keeps off power output gear；
10- mono- keeps off power input gear；11- mono- keeps off power output gear；12- engine controllers (ECU)；13- first motors control
Device (MCU)；The second electric machine controllers of 14- (MCU)；15- power batteries；16- battery management systems (BMS)；17- speed changer controls
Device (TCU) processed；18- hybrid controllers (HCU).
Specific implementation mode
The technical solution of the utility model is further elaborated with reference to embodiment and attached drawing.
Embodiment 1
Present embodiments provide a kind of hybrid power automobile power system comprising：Engine 1, first motor 2, second
Motor 3, speed changer, double clutch 4, first motor controller 13, the second electric machine controller 14, power battery 15, battery management
System 16, engine controller 12, gearbox controller 17 and hybrid controller 18.
The speed changer includes first gear to, second gear to, three gear gear mesh and transmission output shaft, wherein a gear
Gear mesh keeps off power output gear 11 by a gear power input gear 10 and one and forms, and second gear by two gear power to inputting tooth
Wheel 8 and two gear power output gears 9 form, and three gear gear mesh keep off 7 groups of power output gear by three gear power input gears 6 and three
At；The one gear power output gear 11, two keeps off the gear power output gear 7 of power output gear 9 and three and is coaxially fixed on institute
It states on transmission output shaft.
The engine and the rotor of the first motor are rigidly connected, the master of the first motor and the double clutch
Moving plate is rigidly connected by the first input shaft, and the three gears power input gear 6 is rotatablely arranged at first input shaft
On, and fixed with the first driven disc of the double clutch；Second driven disc of the double clutch and second motor
Rotor be sequentially connected by the second input shaft, and to keep off power input gear 10 equal for the two gears power input gear 8 and one
It is rotatably set on second input shaft, and gearshift 5 is provided on second input shaft, the speed changer
Power is selectively transferred to a gear power input gear 10 or two and keeps off power input gear 8 by gearshift, to pass through
The action of double clutch 4 and the gearshift 5 is stated, realizes engine and first motor respectively with a gear of the speed changer
Speed ratio, two gear speed ratios or three gear speed ratios export power, and the single movement of the gearshift by the speed changer, real respectively
Existing second motor exports power with a gear speed ratio and two gear speed ratios.
The hybrid power automobile power system of the utility model, the first motor and the second motor can not only drive, but also
It can generate electricity, can select permanent magnet synchronous motor or AC induction motor as needed.
First motor, the second motor and the speed changer Integrated design, is integrated into a shell；It is described to start
Machine, first motor, the second motor and the speed changer input shaft be coaxial design, the first motor and second motor
It is located at the both sides of the speed changer；The transmission output shaft is connect with main reducing gear, then by engine, first motor
Or second the power of motor be transmitted to wheel.
The speed changer realizes three kinds of speed ratios respectively by first gear to, second gear pair and three gear gear mesh, wherein
One gear speed ratio is chosen according to max. climb slope and motor maximum torque (including first motor and second motor), three gear speed ratio roots
Depending on engine peak speed and vehicle max. speed, two gear speed ratios according to one gear and three gear speed ratios consider further that speed ratio it is differential and
Fixed, the speed ratio product ranging from 6-8 of gear a speed ratio and main reducing gear is set to 7 in this embodiment, and two keep off speed ratios and main reducing gear
Speed ratio product ranging from 4.5-5.5, be set to 5 herein, the speed ratio product ranging from 3-4 of three gear speed ratios and main reducing gear, herein
It is set to 3.6, shift is realized by the double clutch and gearshift, specifically how is embodied as those skilled in the art according to this
What the content of utility model can obtain, this is no longer going to repeat them.
The sum of second motor and the torque of first motor are used for meeting the sum of vehicle max. climb slope, torque in this
It is not the sum of the torque of only motor, but the peak torque of first motor is multiplied by consider the sum of the torque after speed ratio
Two gear speed ratios the sum of are multiplied by plus the peak torque of the second motor obtained by a gear speed ratio, the power of the engine and engine
Maximum speed is used for meeting vehicle max. speed, and when vehicle is in max. speed, speed changer is in three gears, and engine individually drives
Dynamic, the peak power of the engine, the peak power of the first, second motor are used for meeting hundred kilometers of accelerating abilities of vehicle.
The power battery be lithium battery, the energy content of battery and power depending on vehicle performance target, the power electric
Pond is connect by first motor controller with the first motor circuit, and also passes through the second electric machine controller and described second
Motor circuit connects；It is powered to first motor by first motor controller MCU when first motor drives, works as first motor
By first motor controller MCU to power battery charging when power generation, when the second motor drives, the power battery passes through
Two electric machine controller MCU power to the second motor, when the second electric power generation by the second electric machine controller MCU to the power
Battery charges.
The engine controller ECU is used for controlling engine and monitors the state of engine, and ECU is also by engine in addition
Relevant information (such as engine speed, torque, power) HCU, the battery management system BMS are passed to by CAN bus
Battery relevant information (such as battery SOC, battery temperature, battery SOH, battery charge-discharge electric power allowable) is passed by CAN bus
The HCU, the first motor controller MCU and the second electric machine controller MCU are passed respectively by first motor and second
The relevant information (such as motor speed, torque, power) of motor sends HCU to by CAN bus, and the TCU is used for controlling institute
State double clutch state (in conjunction with, separation, sliding wear) and the speed changer gear shifting action, including the schedule of speed changer with
The action of gearshift, and by the relevant information (gear, gearshift condition, clutch combination sliding wear etc.) of speed changer and double clutch
The HCU is passed to by CAN bus, (such as engine control mode starts the HCU by the relevant control instruction of engine
Machine demand torque, demand rotating speed etc.) ECU is sent to by CAN bus, the HCU refers to the control of the first motor
(control model of such as first motor, the torque of first motor demand, demand rotating speed) is enabled to be sent to described first by CAN bus
(such as control model of the second motor, the second motor need by the control instruction of second motor by electric machine controller MCU, the HCU
Ask torque, demand rotating speed etc.) the second electric machine controller MCU is sent to by CAN bus.
The hybrid power automobile power system of the utility model is collected by two motors and three shift transmissions
At can realize all hybrid power functions, and motor is driven with two gears, engine is driven with three gears, can
The dynamic property and economy for meeting vehicle can also realize smooth gear shifting in shift by the speed governing of two motors, and can
To be applied to plug-in hybrid-power automobile (PHEV), non-plug-in hybrid-power automobile (HEV) can also be applied to.
Embodiment 2
Present embodiments provide a kind of control method of hybrid power automobile power system comprising：
S10, according to accelerator pedal aperture, calculate vehicle and drive demand torque, and drive demand torque to obtain according to vehicle
Vehicle drives demand power.
Specifically, corresponding wheel end torque under different gears is calculated according to engine test bench characteristic torque, further according to engine
Rotating speed calculates corresponding speed under different gears, to obtain speed and take turns the correspondence of end torque.
It is calculated separately using identical method when showing that first motor and the second motor drive, pair of speed and wheel end torque
It should be related to.
The correspondence and first motor and the second motor of speed and wheel end torque when passing through engine driving drive
When speed and the correspondence of wheel end torque calculate the sum of corresponding wheel end torque under current vehicle speed, and by wheel end torque it
Show that the road wheel end under different gas pedal apertures drives demand torque with accelerator pedal aperture is multiplied by.
It calculates whole road wheel end according to current vehicle speed and road wheel end driving demand torque and drives demand power, according to brake pedal
Road wheel end braking is calculated in conjunction with brake disc or the design parameter of brake drum in the brake pressure that aperture and master cylinder generate
Braking requirement power is calculated further according to current vehicle speed in demand torque.
S20, power system operational pattern is determined.
Specifically, demand power is driven to determine that mixing is dynamic according to speed, battery SOC (battery dump energy) and the vehicle
Power automobile dynamic system is worked with electric-only mode (EV) or hybrid mode (HV)：When speed is less than certain threshold value, electricity
Pond SOC be more than certain threshold value and vehicle driving demand power be less than certain threshold value when, dynamical system with EV patterns work, otherwise,
Dynamical system is worked with HV patterns.
If hybrid vehicle be PHEV, battery SOC is higher be greater than 40% when, above-mentioned speed threshold value is higher,
Generally 120km/h, battery SOC threshold value are generally 40%, and it is the peak power of the second motor that vehicle, which drives demand power threshold value,
The sum of with the peak power of first motor, battery SOC it is relatively low such as less than 35% when, above-mentioned speed threshold value is relatively low generally
50-60km/h, and being continuously decreased with the reduction of battery SOC, is generally not less than 20km/h, and above-mentioned SOC threshold is generally 30%, whole
Vehicle drives demand power threshold value typically small, is less than the peak power of the second motor, specific size according to the efficiency of engine and
Depending on engine power rank, the inefficient section of engine is mainly covered, motor is used at engine inefficiencies rate section
Driving, avoids engine driving, saving fuel oil.
If hybrid vehicle is HEV, above-mentioned speed threshold value is generally 50-60km/h, and with the drop of battery SOC
It is low to continuously decrease, generally it is not less than 20km/h, above-mentioned battery SOC threshold value is generally 50-60%, and vehicle drives demand power threshold value
It is typically small, it is the peak power of (being less than) second motor, specific size is according to the efficiency and engine power rank of engine
Depending on, the inefficient section of engine is mainly covered, is driven using motor at engine inefficiencies rate section, avoids engine
Driving, saving fuel oil.
Dynamical system is worked with EV patterns：When vehicle driving demand power is less than the second motor peak power, the second electricity
Machine is operated alone, and engine and first motor do not work, and two clutches of double clutch detach, according to the effect of the second motor
Rate and peak feature drive demand power and demand torque, speed changer to be selectively in a gear or two gears, tool in conjunction with vehicle
Body, as shown in Fig. 2, if driving demand torque is more than the second motor and drives corresponding peak torque, the second electricity with two gears
Machine is driven with a gear, if speed drives corresponding max. speed, the second motor to be driven with two gears higher than the second motor with a gear
It is dynamic, if above two condition is all unsatisfactory for, the region that motor is in a gear and two gear drivings overlap, at this time according to the second motor
Depending on efficiency, if a gear drives corresponding second electric efficiency to drive corresponding second electric efficiency, speed change higher than two gears
Device is in a gear, if instead a gear drives corresponding second electric efficiency to drive corresponding second electric efficiency less than two gears,
Then speed changer is in two gears, and during shift, the second motor is used for speed governing, to ensure smooth gear shifting, is risen in a gear
During two gears, specific speed regulation process of shifting gears is as follows：Assuming that a gear speed ratio is i1, two gear speed ratios are i2, the second motor before upshift
Rotating speed is n1, the second motor load down first plucks neutral gear to 0, then gearshift when shift starts, and then motor carries out rotating speed
Speed governing is controlled to rotating speed of target, then two gear of gearshift extension, the rotating speed of target are n2=n1i2/i1；In two gear drops, one gear
During, specific speed regulation process of shifting gears is as follows：Assuming that a gear speed ratio is i1, two gear speed ratios are i2, the second motor speed before upshift
For n2, the second motor load down first plucks neutral gear to 0, then gearshift when shift starts, and then motor carries out rotating speed control
Speed governing hangs a gear to rotating speed of target, then gearshift, and the rotating speed of target is n1=n2i1/i2。
When vehicle driving demand power is more than the second motor peak power, the second motor and first motor both participate in drive
Dynamic, engine is shut down, and vehicle driving demand power is reasonably allocated to two according to first motor and the efficiency characteristic of the second motor
A motor, specifically, as shown in Figure 3 and Figure 4, respectively according to first motor and the efficiency characteristic of the second motor by each motor
Universal characteristic efficiency MAP chart is divided into three power intervals, is distinguished with the power of motor upper limit and lower limit of the power two lines,
Zero to the part between the lower limit of the power be the first power interval, the lower limit of the power to the part between the upper limit of the power be the second power
Section is third power interval in the upper limit of the power to the part between motor external characteristics, if the vehicle drives demand power
Less than the sum of the second power of motor upper limit and first motor lower limit of the power, then the power for being assigned to first motor is first motor work(
Rate lower limit, the power for being assigned to the second motor is the difference that vehicle drives demand power and the first motor lower limit of the power, if described
Vehicle drives demand power to be more than the sum of the second power of motor upper limit and first motor lower limit of the power, is assigned to the work(of the second motor
Rate is the second power of motor upper limit, and the power for being assigned to first motor is that vehicle drives demand power and the second power of motor upper limit
Difference.
The power for being assigned to first motor is known as first motor and drives demand power, the power of the second motor will be assigned to
Referred to as the second motor drives demand power, when determining the transmission gear, it is first determined the gear of the second motor, specific side
Method determines that gear method is identical when being operated alone with the second motor, see above-mentioned；It has determined the second motor gear and then has determined the
One motor gear, if the second motor is driven with a gear, first motor is driven with a gear driving or three gears, specific gear
Gear selection method is identical when choosing method is operated alone with the second motor, if the second motor is driven with two gears, the first electricity
Machine is driven with two gears or three gears, and gear selection method is identical when specific gear choosing method is operated alone with the second motor；When
During second motor switches between a gear driving and two gear drivings, the second motor is used for speed governing, ensures smooth gear shifting,
During first motor switches between two gears and three gear drivings, first motor is used for speed governing, ensures smooth gear shifting
Property.
Dynamical system is in HV patterns：The HV patterns specifically include tandem drive, engine is operated alone, engine drives
Dynamic power generation and joint driving.
When speed is less than certain threshold value, battery SOC are less than certain threshold value and vehicle driving demand power is less than certain threshold value
When, dynamical system is in series model, the power generation of engine driving first motor, generator power be vehicle drive demand power and
Two clutches of the sum of electric attachment demand power, double clutch detach, and engine is not involved in driving wheel, the second motor with
One gear driving vehicle traveling.
When hybrid vehicle is PHEV, when battery SOC it is higher for example higher than 40% when, without series drive mode, when
When such as less than 35% when SOC is relatively low, there are series model, above-mentioned speed threshold value to be generally 50-60km/h, battery SOC threshold value one
As be 25%, vehicle driving demand power threshold value is less than first motor peak power, and specific size needs to refer to engine
Efficiency section and engine power level, principle be ensure driving demand power covering engine inefficient section, keep away
Exempt from engine to work in inefficient area；For HEV, above-mentioned speed threshold value is 50-60km/h, and battery SOC threshold value is 40%-
45%, vehicle drives demand power threshold value to be less than first motor peak power, and specific size needs to refer to the efficiency area of engine
Between and engine power level, principle be ensure driving demand power covering engine inefficient section, avoid engine
It works in inefficient area.
When speed is more than certain threshold value higher than certain threshold value or vehicle driving demand power, engine participates in driving,
For PHEV, battery capacity it is higher for example higher than 40% when, above-mentioned speed threshold value is higher, generally higher than 120km/h, and vehicle drives
Dynamic demand power threshold value is generally the sum of the peak power of the second motor and first motor, relatively low such as less than in battery SOC
When 35%, the relatively low generally 50-60km/h of above-mentioned speed threshold value, and continuously decreased with the reduction of battery SOC, generally it is not less than
20km/h, vehicle drive demand power threshold value typically small, are less than the peak power of the second motor, specific size is according to engine
Efficiency and engine power rank depending on, mainly cover engine inefficient section, at engine inefficiencies rate section
It being driven using motor, avoids engine driving, saving fuel oil, for HEV, above-mentioned speed threshold value is generally 50-60km/h, and with
The reduction of battery SOC continuously decreases, and is generally not less than 20km/h, and above-mentioned battery SOC threshold value is generally 50-60%, vehicle driving
Demand power threshold value is typically small, is less than the peak power of the second motor, specific size is according to the efficiency and engine of engine
Depending on power level, the inefficient section of engine is mainly covered, is driven, is kept away using motor at engine inefficiencies rate section
Exempt from engine driving, saving fuel oil.
When speed is more than certain threshold value higher than certain threshold value or vehicle driving demand power, engine participates in driving,
It is operated alone under engine driving power generation mode in the engine, double clutch and shifter of transmission are selectively real
Existing engine is driven with a gear, two gears or three gears, mainly depending on engine power and engine efficiency characteristic, works as demand
When engine power is certain, then to be in its right for speed changer for the corresponding engine efficiency highest of which gear under three gears
The gear answered, in gear handoff procedure, first motor is used for realizing shift speed governing；Determine that gear drives need according to vehicle later
It asks torque to determine demand motor torque, dynamical system mould is determined according to vehicle demand engine torque and engine efficiency characteristic
Formula, specifically, as shown in figure 5, engine torque lower limit is formulated according to engine efficiency characteristic, if vehicle drives demand torque
Less than engine torque lower limit, then dynamical system pattern is engine driving power generation, and the torque for distributing to engine is engine
Lower torque limit is generated electricity using first motor, and power generation torque is the difference that vehicle drives demand torque and engine torque lower limit, this
When the second motor with turn；If vehicle, which drives demand torque to be more than engine torque lower limit, is less than engine test bench characteristic torque,
Dynamical system pattern is operated alone for engine, and first motor and the second motor are with turning at this time；If vehicle drives demand to turn round
Square is more than engine test bench characteristic torque, then dynamical system is in joint drive mode, and engine is made with external characteristics torsional toughness at this time,
Speed changer is selectively in a gear, two gears or three gears, is mainly shifted gears according to engine speed, in engine peak speed
Place's shift, if vehicle driving demand torque is less than the sum of engine test bench characteristic torque and first motor external characteristics torque, the
One motor participates in driving, and torque is the difference that vehicle drives demand torque and engine test bench characteristic torque, and the second motor is not at this time
Work, if vehicle driving demand torque be more than the sum of engine test bench characteristic torque and first motor external characteristics torque, first
Motor participates in driving, and torque is first motor external characteristics torque, and the second motor also assists in driving at this time, and torque drives for vehicle
The difference of dynamic demand torque and engine test bench characteristic torque and first motor external characteristics torque；
When vehicle is in retarding braking state, engine is shut down, and two clutches of double clutch detach, by second
Motor realizes Brake energy recovery, and the electric energy of recycling is stored in power battery；Specifically, when the previous moment of braking second
When motor is driven with a gear, the second motor is still braked with a gear when braking, when the second motor of previous moment of braking is with two gears
When driving, then the second motor is still braked with two gears when braking, if the second motor braking torque cannot meet braking requirement,
Insufficient section is supplemented by conventional hydraulic braking system.If the previous moment engine of braking participates in driving and the second motor does not have
Driving is participated in, then the second motor is braked with two gears when braking, and insufficient section is supplemented by conventional hydraulic.
The sequencing of above example is only for ease of description, can not represent the quality of embodiment.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that：
It still can be with technical scheme described in the above embodiments is modified, or is carried out to which part technical characteristic etc.
With replacement；And these modifications or replacements, various embodiments of the utility model technology that it does not separate the essence of the corresponding technical solution
The spirit and scope of scheme.
Claims (5)
1. a kind of hybrid power automobile power system, which is characterized in that including engine, first motor, the second motor, speed changer
And double clutch；
The speed changer includes first gear to, second gear to, three gear gear mesh and transmission output shaft, wherein first gear
To being made of a gear power input gear and a gear power output gear, second gear is to by two gear power input gears and two gears
Power output gear forms, and three gear gear mesh are made of three gear power input gears and three gear power output gears；One gear
Power output gear, two gear power output gears and three gear power output gears are coaxially fixed on the transmission output shaft
On；
The engine and the rotor of the first motor are rigidly connected, the driving disc spacing pressing of the first motor and the double clutch
It being rigidly connected by the first input shaft, the three gears power input gear is rotatablely arranged on first input shaft, and
And it is fixed with the first driven disc of the double clutch；The rotor of second driven disc of the double clutch and second motor
It is sequentially connected by the second input shaft, and the two gear power input gear and a gear power input gear are rotatably arranged
In on second input shaft, and gearshift is provided on second input shaft, the gearshift choosing of the speed changer
Power is transferred to selecting property a gear power input gear or two gear power input gears.
2. hybrid power automobile power system according to claim 1, which is characterized in that the engine, first motor,
Second motor, the first input shaft and the second input shaft are coaxial design, and the first motor and second motor are located at
The both sides of the speed changer.
3. hybrid power automobile power system according to claim 1, which is characterized in that the first motor and the second electricity
Machine is permanent magnet synchronous motor or AC induction motor.
4. hybrid power automobile power system according to claim 1, which is characterized in that a gear speed ratio of the speed changer
With the speed ratio product ranging from 6-8 of main reducing gear；The speed ratio product ranging from 4.5-5.5 of two gear speed ratios and main reducing gear, three gears
The speed ratio product ranging from 3-4 of speed ratio and main reducing gear.
5. hybrid power automobile power system according to claim 1, which is characterized in that further include first motor control
Device, the second electric machine controller, power battery, battery management system, engine controller, gearbox controller and hybrid power control
Device processed；
The power battery is connect by first motor controller with the first motor circuit, and also passes through the second motor control
Device processed is connect with second motor circuit；
The engine controller is connect with hybrid controller signal, for controlling engine and monitoring the shape of engine
State, and engine condition information is passed into hybrid controller by CAN bus；
The battery management system is connect with hybrid controller signal, is transmitted by CAN bus for battery relevant information
To the hybrid controller；
The first motor controller and the equal signal of the second electric machine controller are connected to the hybrid controller, in institute
Under the control for stating hybrid controller, first motor and the rotation of the second motor are controlled respectively, and in first motor and second
When motor is in generating state, to power battery charging；And the relevant information of first motor and the second motor is passed through respectively
CAN bus sends hybrid controller to；
The gearbox controller signal is connected to the hybrid controller, for controlling the double clutch and the change
The gear shifting action of fast device, and the relevant information of speed changer and double clutch is passed into the hybrid power control by CAN bus
Device processed；
The relevant control instruction of engine is sent to the engine by CAN bus and controlled by the hybrid controller
The control instruction of the first motor is sent to the first motor controller, the hybrid power control by device by CAN bus
The control instruction of second motor is sent to second electric machine controller by device processed by CAN bus.
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| CN201820423364.4U CN208006697U (en) | 2018-03-27 | 2018-03-27 | Hybrid power automobile power system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108382188A (en) * | 2018-03-27 | 2018-08-10 | 中国第汽车股份有限公司 | Hybrid power automobile power system and its control method |
| CN110027400A (en) * | 2019-04-30 | 2019-07-19 | 奇瑞汽车股份有限公司 | A kind of double-motor hybrid power system |
| CN110712514A (en) * | 2018-07-11 | 2020-01-21 | 上海汽车变速器有限公司 | PHEV power system and control method thereof |
-
2018
- 2018-03-27 CN CN201820423364.4U patent/CN208006697U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108382188A (en) * | 2018-03-27 | 2018-08-10 | 中国第汽车股份有限公司 | Hybrid power automobile power system and its control method |
| CN108382188B (en) * | 2018-03-27 | 2024-03-15 | 中国第一汽车股份有限公司 | Hybrid electric vehicle power system and control method thereof |
| CN110712514A (en) * | 2018-07-11 | 2020-01-21 | 上海汽车变速器有限公司 | PHEV power system and control method thereof |
| CN110027400A (en) * | 2019-04-30 | 2019-07-19 | 奇瑞汽车股份有限公司 | A kind of double-motor hybrid power system |
| CN110027400B (en) * | 2019-04-30 | 2021-07-30 | 奇瑞汽车股份有限公司 | Dual-motor hybrid power system |
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