CN110329053A - A kind of hybrid power system for automobile and powershift method - Google Patents
A kind of hybrid power system for automobile and powershift method Download PDFInfo
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- CN110329053A CN110329053A CN201910455106.3A CN201910455106A CN110329053A CN 110329053 A CN110329053 A CN 110329053A CN 201910455106 A CN201910455106 A CN 201910455106A CN 110329053 A CN110329053 A CN 110329053A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
- B60K6/54—Transmission for changing ratio
- B60K6/547—Transmission for changing ratio the transmission being a stepped gearing
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a kind of hybrid power system for automobile and powershift methods, the dynamical system transmitting drives to output shaft, output shaft is connected differential mechanism, dynamical system includes power source, mode transmission mechanism, gear transmission mechanism and control system, power source includes engine and motor, gear transmission mechanism includes multiple gears, the control system is analyzed and processed received automobile various parameters data, according to processing result control power source and/or mode transmission mechanism and/or gear transmission mechanism.The present invention realizes that the pure oily mode of dynamical system, the pure power mode of P2, the pure power mode of P3, P2 mixes dynamic model formula, P3 mixes the switching of dynamic model formula and each drive mode, wider transmission velocity ratio range is covered, guarantees largely to save energy consumption under the premise of vehicle dynamic quality.
Description
Technical field
The invention belongs to electronic and mixed electrical automobile technical field, specially a kind of hybrid power system for automobile and powershift
Method.
Background technique
According to driving motor locating different location in hybrid power transmission system, area is carried out with different digital codes
Point, respectively P0, P1, P2, P3, P4 configuration hybrid power system, the motor of each configuration are respectively P0 motor, P1 motor, P2 electricity
Machine, P3 motor and P4 motor, for P2 motor and P3 motor, P2 motor is placed in front of transmission input shaft, and P3 motor is placed in change
After fast case input shaft, connect output shaft of gear-box.P2 motor or P3 motor respectively have advantage and disadvantage, and advantage includes that vapour can be operated alone
Vehicle drives automobile in conjunction with engine jointly, and disadvantage is then that single P2 motor or P3 motor ratio coverage are relatively small, motor
Effectively power is not fully utilized, and the applicable speed of automobile and torque range are small, and the coupling of power mixing is poor, and hardly possible is realized
In the optimum control of each operating condition, cause vehicle rate of economizing gasoline low.In other words, automobile running condition is complicated, in order to make full use of
The characteristic of engine and motor, single drive mode or simple engine combination motor drive mode are difficult to meet automobile simultaneously
Power demand and energy saving requirement.
Summary of the invention
In view of the above-mentioned problems existing in the prior art, the present invention provides a kind of hybrid power system for automobile and powershifts
The same motor of method realizes the combination and switching of P2 motor and P3 motor, realizes the pure oily mode, the pure electricity of P2 of dynamical system
The pure power mode of mode, P3, P2 mix dynamic model formula and P3 mixes the multiple drive modes such as dynamic model formula, cover wider transmission velocity ratio, make
The speed and torque demand of automobile adaptation wider range；Taking full advantage of engine speed and motor speed has consolidating for high efficient district
There is characteristic, engine and motor is made to work in larger efficiency area, guarantees largely to save under the premise of vehicle dynamic quality
Energy consumption.
To achieve the goals above, the technical scheme adopted by the invention is that:
A kind of hybrid power system for automobile, to output shaft, the output shaft is connected differential for the dynamical system transmitting driving
Device, the dynamical system include power source, mode transmission mechanism, gear transmission mechanism and control system, and the power source includes
Engine and motor, gear transmission mechanism include multiple gears, the control system to received automobile various parameters data into
Row analysis processing, according to processing result control power source and/or mode transmission mechanism and/or gear transmission mechanism.
Power source includes engine and motor, and mode transmission mechanism includes that N gear, P2 gear and P3 keep off at least three modes gear,
P3 gear includes P3-1 bottom gear and P3-2 top gear.
The dynamical system includes three kinds of drive modes: pure oil mode, pure power mode and mixed dynamic model formula；
Pure oil mode: automobile only passes through engine driving, and when the mode gear is N gear, the power of motor cannot be transferred to
Output shaft, engine pass through gear transmission mechanism transmitting driving to output shaft；
Pure power mode: automobile only passes through motor driven, and motor is by mode transmission mechanism or passes sequentially through mode transmitting
Mechanism and the transmitting of gear transmission mechanism drive to output shaft；
Mixed dynamic model formula: automobile is driven jointly by motor and engine, and engine passes through the transmitting driving of gear transmission mechanism
To output shaft, while motor by mode transmission mechanism or passes sequentially through mode transmission mechanism and the transmitting of gear transmission mechanism is driven
It moves to output shaft.
Pure power mode includes the pure power mode of P2 and the pure power mode of P3, and mixed dynamic model formula includes that P2 mixes dynamic model formula and the mixed dynamic model of P3
Formula:
The pure power mode of P2: motor passes sequentially through P2 gear and gear transmission mechanism transmitting driving to output shaft；
The pure power mode of P3: motor keeps off transmitting driving to output shaft by P3；
The motor that P2 mixes under dynamic model formula passes sequentially through P2 gear and gear transmission mechanism transmitting driving to output shaft；
P3 mixes the motor under dynamic model formula and keeps off transmitting driving to output shaft by P3.
A kind of powershift method, the switching method is used for above-mentioned dynamical system, after the automotive ignition, by artificial
It is following one of drive mode that actively switching or control system, which automatically switch to dynamical system: pure oil mode, the pure electricity of P2
The pure power mode of mode, P3, P2 mix dynamic model formula and P3 mixes dynamic model formula.
Process for gear under pure oil mode are as follows: acceleration signals or reduce-speed sign are transferred to control system, control system control
Gear transmission mechanism processed switches to different gears, and acceleration signals, reduce-speed sign, speed signal three and gear is made to match.
Process for gear under the pure power mode of P2 are as follows: acceleration signals or reduce-speed sign are transferred to control system, control system
Control gear transmission mechanism switches to different gears, and acceleration signals, reduce-speed sign, speed signal three and gear is made to match.
Process for gear under the pure power mode of P3 are as follows: acceleration signals or reduce-speed sign are transferred to control system, control system
Control model transmission mechanism switches between P3-1 bottom gear and P3-2 top gear, makes acceleration signals, reduce-speed sign, speed signal
Three matches with P3-1 bottom gear or P3-2.
P2 mixes the process for gear under dynamic model formula are as follows: acceleration signals or reduce-speed sign are transferred to control system, control system
Control gear transmission mechanism switches to different gears, and acceleration signals, reduce-speed sign, speed signal three and gear is made to match.
P3 mixes the process for gear under dynamic model formula are as follows: acceleration signals or reduce-speed sign are transferred to control system, control system
Control gear transmission mechanism switches to different gears, and acceleration signals, reduce-speed sign, speed signal three and gear is made to match.
According to the process for gear under the drive mode and each mode, control system formulates the selection and switching of drive mode
Rule.Include:
Control system controls the dynamical system and keeps pure oily mode:
A: acceleration signals is transferred to control system: control system judges the power according to acceleration signals and speed signal
After system reaches shifting points, control system exports target gear, while controlling engine and executing drop twisting work, and engine is practical to be turned round
Square is gradually reduced, and clutch is gradually opened, and when engine actual torque is zero, clutch is fully opened, at this time control system control
Engine processed executes timing action and control system control gear transmission mechanism switches to target gear, makes target gear and acceleration
Signal Matching, after control system judges that actual gear is consistent with target gear, control system terminates speed regulation and issues to engine
Torque increase instruction, control system control clutch closure.
B: reduce-speed sign is transferred to control system: control system judges the power according to reduce-speed sign and speed signal
After system reaches shifting points, control system exports target gear, while controlling engine and executing drop twisting work, and engine is practical to be turned round
Square is gradually reduced, and clutch is gradually opened, when engine actual torque is zero, when clutch fully opens, and control system control
Engine executes timing action and control system control gear transmission mechanism switches to target gear, the practical gear of control system judgement
After position is consistent with target gear, control system terminates speed regulation and control system control clutch closure.
Control system controls the dynamical system and keeps the pure power mode of P2:
A: acceleration signals is transferred to control system: control system judges the dynamical system according to acceleration signals and speed signal
When uniting and do not reach shifting points, but judging that acceleration signals and speed are outside the region of shifting points, motor exports the demand and turns round
Square, gear transmission mechanism are maintained at current shift, guarantee that current shift and acceleration signals match；Control system is believed according to acceleration
Number and after speed signal judges that the dynamical system reaches shifting points, gear transmission mechanism switches to target gear, makes to work as front
Position and acceleration signals match.
B: reduce-speed sign is transferred to control system: motor exports the demand torque of reduce-speed sign transmitting, control system control
Gear transmission mechanism switches to target gear, and target gear and reduce-speed sign is made to match.
Wherein, motor maximum torque refers to the peak torque that motor can provide.
Control system controls the dynamical system and keeps the pure power mode of P3:
A: acceleration signals is transferred to control system: when the need that mode transmission mechanism is transmitted in P3-1 bottom gear, acceleration signals
When seeking torque no more than motor maximum torque, motor exports the demand torque, the switching of control system control model transmission mechanism
To P3-2 top gear；When mode transmission mechanism is turned round in the demand torque that P3-1 bottom gear, acceleration signals are transmitted greater than motor maximum
When square, motor output motor peak torque, after control system reaches shifting points according to acceleration signals and speed judgement, control system
Control model transmission mechanism switches to P3-2 top gear；When the need that mode transmission mechanism is transmitted in P3-2 top gear, acceleration signals
When torque being asked to be greater than motor maximum torque, motor output motor peak torque, mode transmission mechanism keeps P3-2 top gear.
B: reduce-speed sign is transferred to control system: when mode transmission mechanism is in P3-2 top gear, motor output, which is slowed down, to be believed
The demand torque of number transmitting, control system control model transmission mechanism switches to P3-1 bottom gear；When mode transmission mechanism is in P3-
When 1 bottom gear, motor exports the demand torque of reduce-speed sign transmitting, and mode transmission mechanism keeps P3-1 bottom gear.
Control system control is according to acceleration signals/reduce-speed sign transmitting demand torque control dynamical system in the pure electric mould of P2
Formula and P2 are mixed to be switched between dynamic model formula:
A: acceleration signals is transferred to control system: when the demand torque of acceleration signals transmitting is not more than motor maximum torque
When, control system controls the dynamical system and uses the pure power mode of P2；When the demand torque of acceleration signals transmitting is greater than motor most
When large torque, control system controls the dynamical system and mixes dynamic model formula using P2.
B: reduce-speed sign is transferred to control system: when the dynamical system mixes dynamic model formula using P2, reduce-speed sign is transmitted
When demand torque is greater than motor maximum torque, P2 is kept to mix dynamic model formula；When the dynamical system mixes dynamic model formula using P2, slow down letter
When the demand torque of number transmitting is not more than motor maximum torque, control system controls the dynamical system and uses the pure power mode of P2.
Control system control is according to acceleration signals/reduce-speed sign transmitting demand torque control dynamical system in the pure electric mould of P3
Formula and P3 are mixed to be switched between dynamic model formula:
A: acceleration signals is transferred to control system: when the demand torque of acceleration signals transmitting is not more than motor maximum torque
When, control system controls the dynamical system and uses the pure power mode of P3；When the demand torque of acceleration signals transmitting is greater than motor most
When large torque, control system controls the dynamical system and mixes dynamic model formula using P3.
B: reduce-speed sign is transferred to control system: when the dynamical system mixes dynamic model formula using P3, reduce-speed sign is transmitted
When demand torque is greater than motor maximum torque, P3 is kept to mix dynamic model formula；When the dynamical system mixes dynamic model formula using P3, slow down letter
When the demand torque of number transmitting is not more than motor maximum torque, control system controls the dynamical system and uses the pure power mode of P3.
Compared with prior art, the beneficial effects of the present invention are:
1, P2 gear and P3 gear combine, and same motor realizes the combination and switching of P2 motor and P3 motor；
2, it is pure to realize the pure oily mode of dynamical system, the pure power mode of P2, P3 for the P2 gear and P3 gear of engine combination motor
Power mode, P2 mix dynamic model formula and P3 and mix the multiple drive modes such as dynamic model formula, cover wider transmission velocity ratio, make automobile adapt to compared with
The speed and torque demand of wide scope；
3, according to battery pack state-of-charge, different travel speeds and torque demand, difference has been formulated by control system
Shift schedule and drive mode switch law, take full advantage of the intrinsic spy that engine speed and motor speed have high efficient district
Property, so that engine and motor is worked in larger efficiency area, guarantees largely to save energy under the premise of vehicle dynamic quality
Consumption.
Detailed description of the invention
Fig. 1 is the power system architecture schematic diagram of one embodiment of the invention.
Specific embodiment
Hybrid power system for automobile provided by the invention and powershift method are made below with reference to embodiment further detailed
Carefully, completely illustrate.The embodiments described below is exemplary, and for explaining only the invention, and should not be understood as to this hair
Bright limitation.
A kind of hybrid power system for automobile and powershift method, the dynamical system for driving hybrid vehicle,
The dynamical system includes power source, mode transmission mechanism, gear transmission mechanism, gearshift, pattern switching mechanism, gear of advancing
Position, clutch 5, freewheel clutch 6, control system, input shaft 3 and output shaft 4.
Power source includes engine 2 and motor 1, and the hybrid vehicle is driven by engine 2 and/or motor 1.Institute
It states clutch 5 and connects engine 2.
Mode transmission mechanism includes that totally four modes are kept off for P2 gear, P3-1 bottom gear, P3-2 top gear and N gear, wherein P3-1
Bottom gear and P3-2 top gear constitute P3 gear.When the mode gear is N gear, the power of motor 1 cannot be transferred to output shaft 4.Electricity
The power of machine 1 is kept off by P2 and forms P2 motor when exporting, when the power of motor 1 is exported by P3-1 bottom gear or P3-2 top gear
Form P3 motor.Different mode gears are switched over by pattern switching mechanism, specifically, pattern switching mechanism is changed by electronic
Gear 1 drive mode shift fork of actuating motor switches over.
Gear transmission mechanism includes a gear, second gear, three gears, four gears, reverse gear totally five gears and the second neutral gear, five gears
Input shaft 3 and output shaft 4 are intercoupled, the power source can pass through a gear, second gear, three gears, four gears and transmitting of reversing gear respectively
Driving, when the gear transmission mechanism is in the second neutral gear, power source can not be transmitted by gear and be driven.Different gears pass through
Gearshift switches over, specifically, gearshift includes selector fork, selector fork is linked into different gears and realizes different gears
Transmitting of the position to driving.
Traveling gear includes controlling the forward gear and control reversing gear for car reversed that automobile advances.
The dynamical system further includes operation module, and the operation module is used to receive the various parameters data of automobile, and
Control system is sent the data to, the operation module includes transmitting the acceleration operating device of acceleration signals, slowing down for transmitting
The deceleration-operation device of signal, traveling gear etc. accelerate operating device, deceleration-operation device, traveling gear and control system
Electrical connection.Specifically, acceleration operating device is throttle, deceleration-operation device is brake.
The control system includes electronic control unit ECU, entire car controller HCU, micro-control unit MCU and CAN bus,
It is electrically connected between electronic control unit ECU, entire car controller HCU and micro-control unit MCU by CAN bus.Micro-control unit
MCU is electrically connected with motor 1, for controlling motor 1；Electronic control unit ECU is electrically connected with engine 2, for controlling engine
2, entire car controller HCU are electrically connected and control each transmission mechanism.Transmission mechanism includes mode gearshift and gear mechanism.
Motor 1 connects input shaft 3 by clutch 5 by primary speed-down gear connection mode transmission mechanism, engine 2.
The outer ring of freewheel clutch 6 connects P3-1 bottom gear, and the inner ring of freewheel clutch 6 connects P3-2 top gear.The output shaft 4 is logical
Cross freewheel clutch 6 changeable linking P3-1 bottom gear and P3-2 top gear.
The different dynamic source is passed by different mode gear and different gear transmission mechanisms according to above-mentioned power source, mode
The different connection combinations of mechanism and gear transmission mechanism are passed, the drive mode of the dynamical system includes pure oily mode, the pure electricity of P2
The pure power mode of mode, P3, P2 mix dynamic model formula and P3 mixes dynamic model formula.
Pure oil mode: automobile only passes through engine 2 and drives, and engine 2 is extremely exported by gear transmission mechanism transmitting driving
Axis 4.Specifically, engine 2 passes sequentially through clutch 5, input shaft 3 and gear transmission mechanism transmitting driving to output shaft 4.At this time
Mode gear is that N is kept off.
Pure power mode: automobile only passes through motor 1 and drives, and motor 1 is by mode transmission mechanism or passes sequentially through mode biography
Mechanism and gear transmission mechanism transmitting driving are passed to output shaft 4.Engine 2 is not involved in work at this time.
Further, pure power mode includes the pure power mode of P2 and the pure power mode of P3.
The pure power mode of P2: motor 1 passes sequentially through P2 gear and gear transmission mechanism transmitting driving to output shaft 4.
The pure power mode of P3: motor 1 keeps off transmitting driving to output shaft 4 by P3.
The power of power mode pure for P2, motor 1 is transmitted by the different gears of gear transmission mechanism, specifically,
Motor 1 is intercoupled by jackshaft with the input shaft 3 comprising four gears, is output on output shaft 4 by the gearbox.
Under this mode, each gear speed ratio of four gears is coupled with the speed ratio of motor 1 becomes four new speed ratios of P2 structure.For this implementation
Example, motor 1 to 3 speed ratio of input shaft are equal to gear numeric ratio Im, Im=34/19=1.789, therefore four new speed ratios of P2 structure point
Not Wei four gears each gear speed ratio multiplied by motor 1 arrive input shaft 3 speed ratio.According to each practical feelings of gear speed ratio of four gears
Condition sets the shift schedule of the pure power mode of P2, in order to guarantee that dynamic property and the motor 1 of pure electricity operate in high efficient district, four gears
In shift process, according to dynamical simulation matching result, two suitable speed ratios are selected, four gears are used under the pure power mode of P2
The two of them gear of position.
It should be noted that engine 2 can be realized automatically by motor 1 when mode gear is closed in P2 gear, clutch 5
Starting is realized specifically, motor 1 is driven by the transmitting of primary speed-down gear, input shaft 3 and the transmitting of clutch 5 to engine 2
The starting of engine 2.
Mixed dynamic model formula: automobile is driven jointly by motor 1 and engine 2, and engine 2 is driven by the transmitting of gear transmission mechanism
It moves to output shaft 4, while motor 1 by mode transmission mechanism or passes sequentially through mode transmission mechanism and gear transmission mechanism biography
Driving is passed to output shaft 4.
The motor 1 that P2 mixes under dynamic model formula passes sequentially through P2 gear and gear transmission mechanism transmitting driving to output shaft 4.
P3 mixes the motor 1 under dynamic model formula and keeps off transmitting driving to output shaft 4 by P3.
After automotive ignition, automatically switching to dynamical system by artificial actively switching or control system is following wherein one
Kind drive mode: pure oil mode, the pure power mode of P2, the pure power mode of P3, P2 mix dynamic model formula and P3 mixes dynamic model formula.
Process for gear under pure oil mode are as follows: acceleration signals or reduce-speed sign are transferred to control system, control system control
Gear transmission mechanism processed switches to different gears, and acceleration signals, reduce-speed sign, speed signal three and gear is made to match.
Process for gear under the pure power mode of P2 are as follows: acceleration signals or reduce-speed sign are transferred to control system, control system
Control gear transmission mechanism switches to different gears, and acceleration signals, reduce-speed sign, speed signal three and gear is made to match.
Process for gear under the pure power mode of P3 are as follows: acceleration signals or reduce-speed sign are transferred to control system, control system
Control model transmission mechanism switches between P3-1 bottom gear and P3-2 top gear, makes acceleration signals, reduce-speed sign, speed signal
Three matches with P3-1 bottom gear or P3-2.
P2 mixes the process for gear under dynamic model formula are as follows: acceleration signals or reduce-speed sign are transferred to control system, control system
Control gear transmission mechanism switches to different gears, and acceleration signals, reduce-speed sign, speed signal three and gear is made to match.
P3 mixes the process for gear under dynamic model formula are as follows: acceleration signals or reduce-speed sign are transferred to control system, control system
Control gear transmission mechanism switches to different gears, and acceleration signals, reduce-speed sign, speed signal three and gear is made to match.
According to the process for gear under above-mentioned drive mode and each mode, control system formulates the selection and switching of drive mode
Rule.Include:
1) control system controls the dynamical system and keeps pure oily mode
A: acceleration signals is transferred to control system: control system judges the power according to acceleration signals and speed signal
After system reaches shifting points, control system exports target gear, while controlling engine 2 and executing drop twisting work, and engine 2 is practical
Torque is gradually reduced, and clutch 5 is gradually opened, and when 2 actual torque of engine is zero, clutch 5 is fully opened, at this time control system
System control engine 2 executes timing action and control system control gear transmission mechanism switches to target gear, and control system is sentenced
After disconnected actual gear is consistent with target gear, control system terminates speed regulation and issues torque increase instruction, control system control to engine 2
Clutch 5 processed follows 2 actual torque of engine to realize that driving clutch 5 is closed.
2 revolving speed of installation warrants engine of the matching relationship of both 2 revolving speed of engine, speed and gear, shifting points
With the correspondence setting of speed and gear, this prior art being well known to those skilled in the art, details are not described herein.
Specifically, the process that acceleration signals is transferred to control system progress upshift is as follows:
S1: vehicle stationary puts into forward gear the traveling gear of automobile after touching on the brake, entire car controller HCU control shift
Gear is switched to a gear by mechanism, is then got off the brakes and is stepped on the gas, and automobile enters driving starting operating condition；
S2: after speed reaches the shifting points of acceleration signals, entire car controller HCU electron control unit ECU sends drop
Instruction is turned round, 2 actual torque of engine is gradually reduced, and clutch 5 is gradually opened, the clutch 5 when 2 actual torque of engine is zero
It fully opens；
S3: when clutch 5 fully opens, entire car controller HCU electron control unit ECU sends speed-regulating instruction, electricity
Sub-control unit ECU control 2 revolving speed of engine is adjusted to 4 revolving speed of output shaft, and entire car controller HCU control gearshift switching
To target gear, gear and the matching of 2 revolving speed of engine after making switching；
S4: when gear is in target gear, in other words, when entire car controller HCU detects that selector fork is linked into target
After gear, entire car controller HCU terminates to send speed-regulating instruction, and entire car controller HCU electron control unit ECU sends torque increase and refers to
It enables, 2 actual torque of engine is gradually increased the demand torque transmitted to acceleration signals, and clutch 5 is gradually closed.
B: reduce-speed sign is transferred to control system: the target gear demand that entire car controller HCU is transmitted according to reduce-speed sign,
Entire car controller HCU control gear transmission mechanism switches to target gear, and target gear and reduce-speed sign is made to match.
Specifically, the process that reduce-speed sign is transferred to control system progress downshift is as follows:
S1: in running car, gear is in a non-gear, touches on the brake, entire car controller HCU electron control unit ECU hair
Send drop to turn round instruction, 2 actual torque of engine is gradually reduced, and clutch 5 is gradually opened, when 2 actual torque of engine is zero from
Clutch 5 fully opens；
S2: when clutch 5 fully opens, entire car controller HCU electron control unit ECU sends speed-regulating instruction, electricity
Sub-control unit ECU control 2 revolving speed of engine is adjusted to 3 revolving speed of input shaft, and entire car controller HCU control gearshift switching
To target gear, gear and the matching of 2 revolving speed of engine after making switching；
S3: when gear is in target gear, in other words, when entire car controller HCU detects that selector fork is linked into target
After gear, entire car controller HCU terminates to send speed-regulating instruction, and entire car controller HCU electron control unit ECU sends torque increase and refers to
It enables, 2 actual torque of engine is gradually increased, and clutch 5 is gradually closed.
2) control system controls the dynamical system and keeps the pure power mode of P2
A: acceleration signals is transferred to control system: control system judges the dynamical system according to acceleration signals and speed signal
When uniting and do not reach shifting points, but judging that acceleration signals and speed are outside the region of shifting points, motor 1 exports the demand and turns round
Square, gear transmission mechanism are maintained at current shift, guarantee that current shift and acceleration signals match；Entire car controller HCU according to
After acceleration signals and speed signal judge that the dynamical system reaches shifting points, gear transmission mechanism switches to target gear, makes
Current shift and acceleration signals match.
Specifically, the process that acceleration signals is transferred to control system progress upshift is as follows:
S1: when vehicle stationary, putting into forward gear the traveling gear of automobile after touching on the brake, then get off the brakes and step on the gas, when
When 1 revolving speed of motor reaches the shifting points of acceleration signals, entire car controller HCU, which is sent by CAN bus to micro-control unit MCU, to drop
Instruction is turned round, micro-control unit MCU controls the drop of motor 1 and turns round, and after the completion of drop is turned round, entire car controller HCU receives micro-control unit MCU
Drop, which is turned round, completes instruction, and entire car controller HCU controls gearshift again and current shift is switched to the second neutral gear.
S2: after gear switches to the second neutral gear, entire car controller HCU sends speed-regulating instruction, micro-control to micro-control unit MCU
Unit MCU control motor 1 processed adjusts 4 revolving speed of rotating speed output shaft, full-vehicle control after micro-control unit MCU has executed speed-regulating instruction
Device HCU responds instruction of putting into gear, and entire car controller HCU controls gearshift again and current shift is switched to targeted gear from the second neutral gear
Position.
S3: after the completion of gear switching, entire car controller HCU sends torque increase instruction to micro-control unit MCU, completes upshift control
Process processed.
B: reduce-speed sign is transferred to control system: motor 1 exports the demand torque of reduce-speed sign transmitting, entire car controller
HCU control gear transmission mechanism switches to target gear, and target gear and reduce-speed sign is made to match.
The process of deceleration downshift is different with the switching gear of upshift is accelerated, and switching method is identical, is not repeating herein.
Wherein, 1 peak torque of motor refers to the peak torque that motor 1 can provide.
3) control system controls the dynamical system and keeps the pure power mode of P3
A: acceleration signals is transferred to control system: when the need that mode transmission mechanism is transmitted in P3-1 bottom gear, acceleration signals
When seeking torque no more than 1 peak torque of motor, motor 1 exports the demand torque, refers to when entire car controller HCU receives shift
It enables, control model transmission mechanism switches to P3-2 top gear.When mode transmission mechanism is transmitted in P3-1 bottom gear, acceleration signals
When demand torque is greater than 1 peak torque of motor, 1 output motor of motor, 1 peak torque, control system is according to acceleration signals and speed
After judgement reaches shifting points, control system control model transmission mechanism switches to P3-2 top gear；When mode transmission mechanism is in P3-
When the demand torque that 2 top gears, acceleration signals are transmitted is greater than 1 peak torque of motor, 1 output motor of motor, 1 peak torque, mode
Transmission mechanism keeps P3-2 top gear.
Specifically, the process that acceleration signals is transferred to control system progress upshift is as follows:
S1: vehicle stationary, mode gear is linked into P3-1 bottom gear by pattern switching mechanism, after stepping on the gas, throttle signal transmitting
To entire car controller HCU, entire car controller HCU transmitting signal to micro-control unit MCU, micro-control unit MCU controls motor 1
Torque and rotation speed change, specifically, according to 1 external characteristics of motor of torque and revolving speed change, motor 1 by primary speed-down gear according to
The outer ring of secondary connection P3-1 bottom gear and freewheel clutch 6 surpasses when the outer ring revolving speed of freewheel clutch 6 is higher than inner ring revolving speed
More clutch 6 is closed, and 1 torque of motor and revolving speed are transmitted on output shaft 4 by freewheel clutch 6；
S2: when 1 revolving speed of motor, which reaches throttle, corresponds to the shifting points of speed, entire car controller HCU is by CAN bus to micro-
Control unit MCU sends drop and turns round instruction, and micro-control unit MCU control 1 actual torque of motor is gradually reduced, then micro-control unit
MCU, which sends speed-regulating instruction, declines 1 revolving speed of motor, and when 1 revolving speed of motor drops to 4 revolving speed of output shaft, micro-control unit MCU is logical
It crosses CAN bus and sends speed regulation completion instruction to entire car controller HCU, entire car controller HCU gives pattern switching mechanism sending mode
Mode gear is linked into P3-2 top gear by switching command, and 6 outer ring revolving speed of freewheel clutch is lower than inner ring revolving speed, overdrive clutch at this time
Device 6 is automatically separated, and motor 1 is sequentially connected the inner ring of P3-2 top gear and freewheel clutch 6, motor 1 by primary speed-down gear
Torque and revolving speed are transmitted on output shaft 4 by P3-2 top gear；
S3: after mode gear is linked into P3-2 top gear, entire car controller HCU is sent out by CAN bus to micro-control unit MCU
Torque increase is sent to instruct.
B: reduce-speed sign is transferred to control system: when mode transmission mechanism is in P3-2 top gear, the output of motor 1, which is slowed down, to be believed
The demand torque of number transmitting, entire car controller HCU control model transmission mechanism switches to P3-1 bottom gear；When mode transmission mechanism
In P3-1 bottom gear, motor 1 exports the demand torque of reduce-speed sign transmitting, and mode transmission mechanism keeps P3-1 bottom gear.
Specifically, the process that reduce-speed sign is transferred to entire car controller HCU progress downshift is as follows:
When mode gear is in P3-2 top gear and 1 revolving speed of motor reaches downshift condition, entire car controller HCU passes through CAN
Bus sends drop to micro-control unit MCU and turns round instruction, and micro-control unit MCU control 1 actual torque of motor is gradually reduced, then whole
Vehicle controller HCU gives pattern switching mechanism sending mode switching command, mode gear is switched to P3-1 bottom gear, in handoff procedure
In, 6 outer ring revolving speed of freewheel clutch is gradually higher than inner ring, and freewheel clutch 6 is closed, and 1 torque of motor is passed by freewheel clutch 6
It is delivered on output shaft 4.As pattern switching is completed, outer ring revolving speed is synchronous with output shaft 4, and entire car controller HCU retransmits torque increase
Instruction guarantees that 6 outer ring revolving speed of freewheel clutch is higher than inner ring, and freewheel clutch 6 is closed, and 1 torque of motor and revolving speed are by surmounting
Clutch 6 is transmitted on output shaft 4.
4) control system is according to acceleration signals/reduce-speed sign transmitting demand torque control dynamical system in the pure power mode of P2
And P2 is mixed and is switched between dynamic model formula:
A: acceleration signals is transferred to control system: when the demand torque of acceleration signals transmitting is not more than 1 peak torque of motor
When, control system controls the dynamical system and uses the pure power mode of P2；When the demand torque of acceleration signals transmitting is greater than motor 1 most
When large torque, control system controls the dynamical system and mixes dynamic model formula using P2.
B: reduce-speed sign is transferred to control system: when the dynamical system mixes dynamic model formula using P2, reduce-speed sign is transmitted
When demand torque is greater than 1 peak torque of motor, P2 is kept to mix dynamic model formula；When the dynamical system mixes dynamic model formula, deceleration using P2
When the demand torque of signal transmitting is not more than 1 peak torque of motor, control system controls the dynamical system using the pure electric mould of P2
Formula.
5) control system is according to acceleration signals/reduce-speed sign transmitting demand torque control dynamical system in the pure power mode of P3
And P3 is mixed and is switched between dynamic model formula:
A: acceleration signals is transferred to control system: when the demand torque of acceleration signals transmitting is not more than 1 peak torque of motor
When, control system controls the dynamical system and uses the pure power mode of P3；When the demand torque of acceleration signals transmitting is greater than motor 1 most
When large torque, control system controls the dynamical system and mixes dynamic model formula using P3.
B: reduce-speed sign is transferred to control system: when the dynamical system mixes dynamic model formula using P3, reduce-speed sign is transmitted
When demand torque is greater than 1 peak torque of motor, P3 is kept to mix dynamic model formula；When the dynamical system mixes dynamic model formula, deceleration using P3
When the demand torque of signal transmitting is not more than 1 peak torque of motor, control system controls the dynamical system using the pure electric mould of P3
Formula.
For above-mentioned the 4) and the 5) in situation, control system is according to multinomial Key factor distribution engine 2 and/or motor 1
Torque demand, the multinomial element include: a, battery pack state-of-charge SOC grade, the torque demand that b, driver transmit, c, reality
Border speed and throttle correspond to speed.The throttle corresponds to the speed demand that speed is driver's transmitting.Specifically, state-of-charge
How much SOC is divided into 4 grades, class 4: SOC >=80% according to electricity；Grade 3:60%≤SOC < 80%；Grade 2:40%
≤ SOC < 60%；Grade 1:SOC < 40%.When state-of-charge SOC is in grade 1 or grade 2, it is pure to can satisfy medium and small throttle
Electricity starting, if large throttle, according to mode transmission mechanism position, judgement is that P2 mixes dynamic model formula or P3 mixes dynamic model formula, charged shape
When state SOC is in 2 or more grade, pure power mode, P2 mix dynamic model formula and P3 mixes dynamic model formula and starting can be achieved.
There is the inherent characteristic of high efficient district according to 2 revolving speed of engine and 1 revolving speed of motor, formulate the switching of gear and mode gear
Rule is calculated and determined according to battery pack state-of-charge, acceleration/deceleration signal, 2 revolving speed of engine and 1 revolving speed high-efficiency point of motor
Shifting points.On the basis of above, when practical operation, entire car controller HCU according to specific throttle signal, 2 revolving speed of engine and
1 revolving speed of motor controls gear or mode gear switching.It should be noted that control gear and mode gear switching cannot switch simultaneously.
Entire car controller HCU can determine whether automotive service in which kind of mode, according to operator demand or current vehicle condition
Control shift path.
Be it is necessary to described herein finally: above embodiments are served only for making technical solution of the present invention further detailed
Ground explanation, should not be understood as limiting the scope of the invention, those skilled in the art's above content according to the present invention
The some nonessential modifications and adaptations made all belong to the scope of protection of the present invention.
Claims (10)
1. a kind of hybrid power system for automobile, which is characterized in that the dynamical system transmitting driving to output shaft, the output shaft
It is connected differential mechanism, the dynamical system includes power source, mode transmission mechanism, gear transmission mechanism and control system, described dynamic
Power source includes engine and motor, and gear transmission mechanism includes multiple gears, and the control system is to each seed ginseng of received automobile
Number data are analyzed and processed, according to processing result control power source and/or mode transmission mechanism and/or gear transmission mechanism.
2. hybrid power system for automobile according to claim 1, it is characterised in that: power source includes engine and motor,
Mode transmission mechanism includes that N gear, P2 gear and P3 keep off at least three modes gear, and P3 gear includes P3-1 bottom gear and P3-2 top gear.
3. hybrid power system for automobile according to claim 2, it is characterised in that: the dynamical system includes three kinds of drivings
Mode: pure oil mode, pure power mode and mixed dynamic model formula；
Pure oil mode: automobile only passes through engine driving, and engine passes through gear transmission mechanism transmitting driving to output shaft；
Pure power mode: automobile only passes through motor driven, and motor is by mode transmission mechanism or passes sequentially through mode transmission mechanism
With gear transmission mechanism transmitting driving to output shaft；
Mixed dynamic model formula: automobile is driven jointly by motor and engine, and engine is driven by the transmitting of gear transmission mechanism to defeated
Shaft, while motor by mode transmission mechanism or passes sequentially through mode transmission mechanism and gear transmission mechanism transmitting driving extremely
Output shaft.
4. hybrid power system for automobile according to claim 3, it is characterised in that: pure power mode include the pure power mode of P2 and
The pure power mode of P3, mixed dynamic model formula include that P2 mixes dynamic model formula and the mixed dynamic model formula of P3:
The pure power mode of P2: motor passes sequentially through P2 gear and gear transmission mechanism transmitting driving to output shaft；
The pure power mode of P3: motor keeps off transmitting driving to output shaft by P3；
The motor that P2 mixes under dynamic model formula passes sequentially through P2 gear and gear transmission mechanism transmitting driving to output shaft；
P3 mixes the motor under dynamic model formula and keeps off transmitting driving to output shaft by P3.
5. a kind of powershift method, the switching method is used for dynamical system as claimed in claim 4, the automotive ignition
Afterwards, automatically switching to dynamical system by artificial actively switching or control system is following one of drive mode: pure oil
The pure power mode of mode, P2, the pure power mode of P3, P2 mix dynamic model formula and P3 mixes dynamic model formula.
6. powershift method according to claim 5, it is characterised in that: the process for gear under pure oil mode are as follows: accelerate
Signal or reduce-speed sign are transferred to control system, and control system control gear transmission mechanism switches to different gears, makes to accelerate
Signal, reduce-speed sign, speed signal three and gear match.
7. powershift method according to claim 5, it is characterised in that: the process for gear under the pure power mode of P2 are as follows: add
Fast signal or reduce-speed sign are transferred to control system, and control system control gear transmission mechanism switches to different gears, makes to add
Fast signal, reduce-speed sign, speed signal three and gear match.
8. powershift method according to claim 5, it is characterised in that: the process for gear under the pure power mode of P3 are as follows: add
Fast signal or reduce-speed sign are transferred to control system, and control system control model transmission mechanism is in P3-1 bottom gear and P3-2 high
Switch between speed gear, acceleration signals, reduce-speed sign, speed signal three and P3-1 bottom gear or P3-2 is made to match.
9. powershift method according to claim 5, it is characterised in that: P2 mixes the process for gear under dynamic model formula are as follows: adds
Fast signal or reduce-speed sign are transferred to control system, and control system control gear transmission mechanism switches to different gears, makes to add
Fast signal, reduce-speed sign, speed signal three and gear match.
10. powershift method according to claim 5, it is characterised in that: P3 mixes the process for gear under dynamic model formula are as follows: adds
Fast signal or reduce-speed sign are transferred to control system, and control system control gear transmission mechanism switches to different gears, makes to add
Fast signal, reduce-speed sign, speed signal three and gear match.
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| JPH08324262A (en) * | 1995-05-30 | 1996-12-10 | Aqueous Res:Kk | Hybrid vehicle |
| CN101342866A (en) * | 2008-08-14 | 2009-01-14 | 东风电动车辆股份有限公司 | Electric coupling apparatus of hybrid power machine with dual-coupling mode |
| CN105246730A (en) * | 2013-05-29 | 2016-01-13 | 舍弗勒技术股份两合公司 | Method for switching a drive train of a vehicle and drive train |
| CN206520470U (en) * | 2016-12-15 | 2017-09-26 | 舍弗勒技术股份两合公司 | P2 hybrid power assembly and hybrid electric vehicle |
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2019
- 2019-05-29 CN CN201910455106.3A patent/CN110329053A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08324262A (en) * | 1995-05-30 | 1996-12-10 | Aqueous Res:Kk | Hybrid vehicle |
| CN101342866A (en) * | 2008-08-14 | 2009-01-14 | 东风电动车辆股份有限公司 | Electric coupling apparatus of hybrid power machine with dual-coupling mode |
| CN105246730A (en) * | 2013-05-29 | 2016-01-13 | 舍弗勒技术股份两合公司 | Method for switching a drive train of a vehicle and drive train |
| CN206520470U (en) * | 2016-12-15 | 2017-09-26 | 舍弗勒技术股份两合公司 | P2 hybrid power assembly and hybrid electric vehicle |
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