Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described, only limits to following embodiment but should not be construed the above-mentioned subject area of the present invention.Without departing from the idea case in the present invention described above, according to ordinary skill knowledge and customary means, make various replacements and change, all should be included in protection scope of the present invention.
Embodiment 1:
The present embodiment discloses the full operating condition control method of a kind of double-motor hybrid power system
Referring to Fig. 1, comprise a double-motor hybrid power system being arranged on vehicle.Described double-motor hybrid power system comprises combustion engine, the first motor and the second motor.The electricity that described the first motor and the second motor send is stored in storage battery, and the electric energy of described storage battery is during again for the first motor and the second motor-driven vehicle.Described combustion engine can drive vehicle, also can drive described the first motor and the second electric power generation.
Described vehicle is also provided with the sensor for detection of driving power, B.P. size, and detects the device of described storage battery dump energy.
When vehicle is driven, determine that according to the driving power detecting and storage battery dump energy double-motor hybrid power system is in one of following five kinds of operating modes: single motor drives operating mode, double-motor parallel drive operating mode, driving charging operating mode, combustion engine to drive separately operating mode, combustion engine and motor parallel driving operating mode.
When car brakeing, determine that according to the B.P. detecting and storage battery dump energy double-motor hybrid power system is in one of two kinds of operating modes once: single motor reclaims braking energy, double-motor combined recovery braking energy.
More specifically: referring to Fig. 2, this figure is the diagram of circuit of double-motor hybrid control policy.
1) judge the residing state of vehicle; If vehicle, in negative load condition, passes through step 2~4) control; If vehicle is in braking mode, by step 5) control.
2) the required driving power of vehicle is less than the second power of motor, is divided into two kinds of situations of 2-1 and 2-2:
If 2-1) storage battery SOC > 30%, drives separately vehicle by the second motor.
If 2-2) storage battery SOC < 30%, internal-combustion engine ignition starts to drive vehicle; Now: if combustion engine in optimum efficiency region, combustion engine also drives the first motor or the second electric power generation; If combustion engine, in optimum efficiency region, does not generate electricity.
3) the required driving power of vehicle is greater than the second power of motor, but is less than the first motor and the second power of motor sum, is divided into two kinds of situations of 3-1 and 3-2:
If 3-1) storage battery SOC > 30%, combines driving vehicle by the first motor and the second motor.
If 3-2) storage battery SOC < 30%, internal-combustion engine ignition starts to drive vehicle; Now: if combustion engine in optimum efficiency region, combustion engine also drives the first motor or the second electric power generation; If combustion engine, in optimum efficiency region, does not generate electricity.
4) the required driving power of vehicle is greater than the first motor and the second power of motor sum, is divided into two kinds of situations of 4-1 and 4-2:
If 4-1) the required driving power of vehicle is less than the maximum power in combustion engine optimum efficiency region, be subdivided into again two kinds of situations of 4-1-1 and 4-1-2:
If 4-1-1) storage battery SOC=100%, starts to drive vehicle by internal-combustion engine ignition, do not generate electricity;
If 4-1-2) storage battery SOC < 100%, internal-combustion engine ignition starts to drive vehicle; Now: if combustion engine in optimum efficiency region, combustion engine also drives the first motor or the second electric power generation; If combustion engine, in optimum efficiency region, does not generate electricity.
If 4-2) the required driving power of vehicle is greater than the maximum power in combustion engine optimum efficiency region, be subdivided into again two kinds of situations of 4-2-1 and 4-2-2:
If 4-2-1) storage battery SOC > 30%, starts to drive vehicle by internal-combustion engine ignition; Preferably, now: if combustion engine in optimum efficiency region, combustion engine is combined driving vehicle with the second motor; If combustion engine is not in optimum efficiency region, by the power division of feedback regulation driving engine and the second motor, so that it is operated in the optimum interval of efficiency.
If 4-2-2) storage battery SOC < 30%, combustion engine is combined driving vehicle with the second motor, and combustion engine also drives the first electric power generation.
5) if needed braking force is greater than the maximum power of the second motor, the first motor and the second motor combined recovery braking energy,
If needed braking force is less than the maximum power of the second motor, the second motor reclaims separately braking energy.
Embodiment 2:
Referring to Fig. 3, the present embodiment discloses a kind of concrete double-motor hybrid power system.
This system comprises combustion engine 1, planetary gear system, the first motor, the second motor and double-clutch 8.
Described planetary gear system comprises pinion carrier 2, several planetary wheels, gear ring 3 and sun wheel 18.The output shaft of described combustion engine 1 connects pinion carrier 2, described combustion engine 1 can drive pinion carrier 2 to rotate while work, and then drive vehicle movement, also can drive the first motor and/or the second motor rotary electrification, the electricity that described the first motor and the second motor send is stored in storage battery, when the electric energy of described storage battery does work for the rotor of the first motor and the second motor again.The rotor (i.e. the first rotor 4) of described the first motor connects described gear ring 3.In the present embodiment, described gear ring 3 has internal tooth and external tooth.The internal tooth of described gear ring 3 engages with planetary wheel.The external tooth of described gear ring 3 engages with the gear being arranged on described the first rotor 4.Because described gear ring 3 has external tooth, it is also a gear that gear ring 3 is equivalent to.Therefore between described the first rotor 4 and gear ring 3, be, to rely on gear transmission.
Described sun wheel 18 connects one end of described transmission shaft 6, and the other end of described transmission shaft 6 connects the input disc of described double-clutch 8.Be that described sun wheel 18 is carried out transmission with the input disc of double-clutch 8 by transmission shaft 6.The rotor (i.e. the second rotor 11) of described the second motor connects the input disc of described double-clutch 8, when the second machine operation, the second rotor 11 can drive the input disc rotation of double-clutch 8, and the input disc of double-clutch 8 also can drive the second rotor 11 to rotate, make the second electric power generation.
The mouth (on the input shaft being connected with first clutch 9) of the first clutch 9 of described double-clutch 8 is installed one grade of driving gear 7, and the mouth (on the input shaft being connected with second clutch 10) of the second clutch 10 of described double-clutch 8 is installed second gear driving gear 5.
Described one grade of driving gear 7 engages with first speed driven gear 15.Described second gear driving gear 5 engages with second gear driven gear 16.Described first speed driven gear 15 and second gear driven gear 16 are arranged on same power take-off shaft.Power output gear 13 is also installed on described power take-off shaft.
1) judge the residing state of vehicle; If vehicle, in negative load condition, passes through step 2~4) control; If vehicle is in braking mode, by step 5) control.
2) the required driving power of vehicle is less than the second power of motor, is divided into two kinds of situations of 2-1 and 2-2:
If 2-1) storage battery SOC > 30%, drives separately vehicle by the second motor.Combustion engine 1 is not worked, and dual clutch transmission first clutch 9 and a combination in second clutch 10, another separates.Input disc by the second driven by motor double-clutch rotates, and drives vehicle.The first motor is in rotating without moment of torsion.
If 2-2) storage battery SOC < 30%, internal-combustion engine ignition starts to drive vehicle; Now: if combustion engine in optimum efficiency region, first clutch 9 and a combination in second clutch 10, another separates, and drives the first electric power generation by combustion engine 1, combustion engine 1 drives Vehicle Driving Cycle.If combustion engine is not in optimum efficiency region, combustion engine 1 drives Vehicle Driving Cycle, does not generate electricity.
3) the required driving power of vehicle is greater than the second power of motor, but is less than the first motor and the second power of motor sum, is divided into two kinds of situations of 3-1 and 3-2:
If 3-1) storage battery SOC > 30%, combines driving vehicle by the first motor and the second motor.Be that combustion engine 1 is not worked, dual clutch transmission first clutch 9 and a combination in second clutch 10, another separates.By the first motor and the second machine operation, drive the input disc rotation of double-clutch, drive vehicle.
If 3-2) storage battery SOC < 30%, internal-combustion engine ignition starts to drive vehicle, and first clutch 9 and a combination in second clutch 10, another separates.Now: if combustion engine in optimum efficiency region, combustion engine also drives the first electric power generation; If combustion engine, in optimum efficiency region, does not generate electricity.
4) the required driving power of vehicle is greater than the first motor and the second power of motor sum, is divided into two kinds of situations of 4-1 and 4-2:
If 4-1) the required driving power of vehicle is less than the maximum power in combustion engine optimum efficiency region, be subdivided into again two kinds of situations of 4-1-1 and 4-1-2:
If 4-1-1) storage battery SOC=100%, starts to drive vehicle by internal-combustion engine ignition, do not generate electricity; , first clutch 9 and a combination in second clutch 10, another separates (generally, now hanging a gear).
If 4-1-2) storage battery SOC < 100%, internal-combustion engine ignition starts to drive vehicle; Now: if combustion engine in optimum efficiency region, combustion engine also drives the first motor or the second electric power generation; If combustion engine, in optimum efficiency region, does not generate electricity.
If 4-2) the required driving power of vehicle is greater than the maximum power in combustion engine optimum efficiency region, be subdivided into again two kinds of situations of 4-2-1 and 4-2-2:
If 4-2-1) storage battery SOC > 30%, starts to drive vehicle by internal-combustion engine ignition; Preferably, now: if combustion engine in optimum efficiency region, combustion engine is combined driving vehicle with the second motor; If combustion engine is not in optimum efficiency region, by the power division of feedback regulation driving engine and the second motor, so that it is operated in the optimum interval of efficiency.
If 4-2-2) storage battery SOC < 30%, combustion engine is combined driving vehicle with the second motor, and combustion engine also drives the first electric power generation.
5) if needed braking force is greater than the maximum power of the second motor, the first motor and the second motor combined recovery braking energy, i.e. two arrangement of clutch second clutch 10 combinations, first clutch 9 separates, combustion engine 1 is motionless, and the second motor and the first electric power generation reclaim braking energy;
If needed braking force is less than the maximum power of the second motor, the second motor reclaims separately braking energy, i.e. two arrangement of clutch second clutch 10 combinations, first clutch 9 separates, and the first motor is in the rotation without moment of torsion, and combustion engine 1 is motionless, the second electric power generation, reclaims braking energy.