CN203093720U - Double-planet row type petrol-electric hybrid type hybrid power system - Google Patents

Abstract

The utility model discloses a double-planet row type petrol-electric hybrid type hybrid power system which aims at solving the problem that at present, a mixed hybrid power automobile needs a big motor to provide enough driving power. The double-planet row type petrol-electric hybrid type hybrid power system comprises an engine, a front planet row, a rear planet row, a first inverter, a super capacitor, a second inverter, a second motor, a first motor and a front planet row output shaft. The front planet row is sleeved at the left end of the front planet row output shaft, the first motor is sleeved at the right end of the front planet row output shaft, the left end of the first motor is in key connection with a sun wheel of the front planet row, and the right end of an output shaft of the engine is in key connection with a gear ring sleeve of the front planet row. The input end of the second motor is in key connection with the right end of an output shaft of the front planet row, and the output end of the second motor is in key connection with a sun wheel of the rear planet row. The first motor is in electric-wire connection with the first inverter, the second motor is in electric-wire connection with the second inverter, the first inverter is in electric-wire connection with the super capacitor, the second inverter is in electric-wire connection with the super capacitor, and the first inverter is in electric-wire connection with the second inverter.

Description

The electric series-parallel hybrid electric system of double planet row-type oil

Technical field

The utility model relates to a kind of power system of hybrid vehicle, and or rather, the utility model relates to the electric series-parallel hybrid electric system of a kind of double planet row-type oil.

Background technology

In the face of energy shortage and the serious day by day present situation of environmental pollution, energy-saving and environmental protection become the only way of development of automobile.Hybrid vehicle is at present actv. energy-saving automobile scheme, and its drive system has series, parallel and three kinds of forms of series-parallel connection.Tandem energy is realized the optimal control of driving engine, but all energy all can lose bigger through the secondary conversion; Parallel connection can realize driving efficiency preferably, but driving engine and output shaft mechanical connection can not guarantee that driving engine is in the more excellent work area all the time; Series-parallel connection can be evaded the shortcoming of the two in conjunction with series connection and advantage in parallel, is the configuration scheme of optimizing the most among the three.

Current series parallel hybrid power automobile mainly adopts planetary mechanism as the power dividing device, and representative type version comprises the THS system and the general-duty AHS system of Toyota.Wherein, the THS system of Toyota adopts the single planetary row structure, belongs to single mode power dividing device, it can only realize a kind of pattern of input type power dividing, the advantage of this THS system is when realizing electronic infinite variable speed (EVT) function, has simple structure, and control is relatively easy.But the gear ring of THS system is directly connected to output shaft, its dependence to motor is bigger, for good dynamic property is provided, need in system, select power grade and the bigger motor of output torque for use, this has increased the degree of difficulty of integral vehicle cost and installation to a great extent.In addition, the THS system is owing to can only realize a kind of pattern of input type power dividing, and its driving efficiency in high velocity is less.The AHS system of General Corporation adopts double or three rows of planetary mechanisms realize power dividing, can realize two kinds of patterns of input type power dividing and combined type power dividing, because remedying mutually of two kinds of patterns, make the driving efficiency of AHS in whole speed of a motor vehicle zone, can both keep higher level, this point AHS is better than THS, yet the control that often needs a plurality of power-transfer clutchs in the AHS system comes implementation pattern to switch, and this makes the structure of total system very complicated, and the control difficulty has also increased a lot.

Summary of the invention

Technical problem to be solved in the utility model is that to have overcome present parallel-serial hybrid power automobile big to the motor dependence, needs big motor that the problem of the shortcoming of enough propulsive effort is provided, and provides a kind of double planet row-type oil electric series-parallel hybrid electric system.

For solving the problems of the technologies described above, the utility model is to adopt following technical scheme to realize: the electric series-parallel hybrid electric system of described double planet row-type oil comprises that driving engine, preceding planet row, back planet row, No. 1 inverter, super capacitor, No. 2 inverters, No. two motors, a motor arrange output shaft with preceding planet.

The left end of planet row output shaft before planet row is sleeved on before described, the preceding planet on planet row right side was arranged on the output shaft to being rotationally connected before No. one motor was sleeved on, the right-hand member of the left end of a motor and preceding planet row's preceding planet row sun wheel is that spline pair is connected, the right-hand member of engine output shaft is that spline pair is connected with the left end of preceding planet row's preceding planet toothrow snare, the input end of No. two motors is that spline pair is connected with the right-hand member of preceding planet row output shaft, and the mouth of No. two motors is that spline pair is connected with the left end of back planet row's back planet row sun wheel.No. one motor adopts cable to be connected with an inverter, No. two motor adopts cable to be connected with No. two inverters, No. one inverter adopts cable to be connected with super capacitor, No. two inverter adopts cable to be connected with super capacitor, adopts cable to connect between an inverter and No. two inverters.

Engine output shaft described in the technical scheme, preceding planet toothrow snare, preceding planet row output shaft, preceding planet row sun wheel, a motor, No. two motors are arranged the rotation axis conllinear of sun wheel with the back planet.

The left end of planet row output shaft was meant before preceding planet row described in the technical scheme was sleeved on: front planetary line among the preceding planet row and preceding planet row output shaft are interference fit, and preceding planet row's sun wheel among the preceding planet row and preceding planet row output shaft are for being rotationally connected.

A motor described in the technical scheme adopts cable to be connected with an inverter, No. two motor adopts cable to be connected with No. two inverters, No. one inverter adopts cable to be connected with super capacitor, No. two inverter adopts cable to be connected with super capacitor, adopt the cable connection to be meant between an inverter and No. two inverters: three joints of a described motor adopt cable to connect three alternating current input and output joints of No. 1 inverter respectively, the positive and negative connector of No. 1 inverter adopts cable to be connected with the both positive and negative polarity of super capacitor respectively, three joints of No. two motors adopt cable to be connected with three alternating current input and output joints of No. 2 inverters respectively, the positive and negative connector of No. 2 inverters adopts cable to be connected with the both positive and negative polarity of super capacitor respectively, and the positive and negative connector of the positive and negative connector of No. 1 inverter and No. 3 inverters adopts cable to link to each other.

Preceding planet toothrow circle, 4 preceding planet rows of planetary wheel, preceding planet row sun wheel, front planetary line, front planetary line right side, preceding planet toothrow snares and 4 preceding planet rows of planetary wheel bearing pins that structure is identical that structure is identical are drawn together in preceding planet package described in the technical scheme.

Planet rows of planetary wheel bearing pin was installed on the front planetary line equably before 4 identical preceding planet rows of planetary wheels of structure adopted respectively, the preceding planet rows of planetary that the identical preceding planet rows of planetary wheel of 4 structures is identical with 4 structures is taken turns between the bearing pin to being rotationally connected, the outside tooth of the preceding planet rows of planetary wheel that 4 structures are identical and the internal tooth of preceding planet toothrow circle are meshed, the tooth of the inner tines of the preceding planet rows of planetary wheel that 4 structures are identical and preceding planet row sun wheel is meshed, before the left end of planet toothrow circle be that spline pair is connected with the right-hand member of preceding planet toothrow snare, be positioned at 4 identical preceding planet rows of planetary of structure and take turns the front planetary line right side and the front planetary line employing welding manner on right side and fuse.

The rotation axis of the preceding planet rows of planetary wheel that 4 structures described in the technical scheme are identical is evenly distributed in apart from the front planetary line rotation axis on the circumference that waits radius, the rotation axis of the preceding planet rows of planetary wheel that 4 structures are identical and the rotation axis of front planetary line parallel, and the preceding planet rows of planetary that the identical preceding planet rows of planetary wheel of 4 structures is identical with 4 structures is taken turns between the bearing pin and is separately installed with the bearing pin sleeve No. 1.

Preceding planet row output shaft described in the technical scheme is set to stepped shaft, by left side section axle, the stage casing axle is formed with right section axle, left side section axle for the major diameter shaft part is and the front planetary line centre hole is the shaft part of interference fit, the stage casing axle for and preceding planet row's preceding planet arrange the shaft part that sun wheel and motor become to be rotationally connected, right section axle is and No. two equipped splined shaft sections of motor, on the rotation axis of preceding planet row output shaft, from left to right process a long blind hole, and with the equipped preceding planet row output shaft of preceding planet row sun wheel on radially process the radial direction through hole of the conveying lubricating oil that the long blind hole on 2 to 3 and the axis communicates.

No. 2 sleeves and No. 1 sleeve before the two ends, the left and right sides of the preceding planet row sun wheel central through hole described in the technical scheme add successively and are sleeved on the planet row output shaft, installing bearing cap shim (18) additional in the right side on front planetary line right side is bolted connection, the centre hole of bearing cap shim (18) and preceding planet row's sun wheel (14) are for being rotationally connected, preceding planet rows of planetary wheel bearing pin (24) before reaching between preceding planet rows of planetary wheel (13) and front planetary line (15) between the planet rows of planetary wheel (13) and front planetary line right side (19) is gone up No. 1 pad of suit (25), before the both ends of the surface of planet rows of planetary wheel (13) be sliding block joint with the medial surface of No. 1 pad (25) respectively, No. 1 pad (25) and preceding planet rows of planetary wheel bearing pin (24) are for being rotationally connected.

Back planet row described in the technical scheme includes back planet toothrow circle, 4 back planet seniority among brothers and sisters star-wheel, back planet row sun wheel, back planet rows of planetary frame, planet rows of planetary frame right sides, back and 4 back planet seniority among brothers and sisters star-wheel bearing pins that structure is identical that structure is identical.

4 identical back planet seniority among brothers and sisters star-wheels of structure adopt back planet seniority among brothers and sisters star-wheel bearing pin to be installed in equably on the planet rows of planetary frame of back respectively, the back planet that the identical back planet seniority among brothers and sisters star-wheel of 4 structures is identical with 4 structures is ranked between the star-wheel bearing pin to being rotationally connected, the outside tooth of the back planet seniority among brothers and sisters star-wheel that 4 structures are identical and the internal tooth of back planet toothrow circle are meshed, the tooth of the inner tines of the back planet seniority among brothers and sisters star-wheel that 4 structures are identical and back planet row sun wheel is meshed, and back planet rows of planetary frame right side fuses with back planet rows of planetary frame employing welding manner.

The rotation axis of the back planet seniority among brothers and sisters star-wheel that 4 structures described in the technical scheme are identical is evenly distributed in apart from back planet rows of planetary frame rotation axis on the circumference that waits radius, the rotation axis of the back planet seniority among brothers and sisters star-wheel that 4 structures are identical and the rotation axis of back planet rows of planetary frame parallel, and the back planet that the identical back planet seniority among brothers and sisters star-wheel of 4 structures is identical with 4 structures is ranked between the star-wheel bearing pin bearing pin sleeve is installed No. 2.

Compared with prior art the beneficial effects of the utility model are:

1. the electric series-parallel hybrid electric system of double planet row-type oil described in the utility model can be realized the electronic infinite variable speed function, guarantees that engine operation in best fuel-economy district, reduces oil consumption.

2. the electric series-parallel hybrid electric system of double planet row-type oil described in the utility model can be realized the pure electronic car pattern that opens, and eliminates the idling oil consumption of driving engine, improves the car load fuel economy.

3. the electric series-parallel hybrid electric system of double planet row-type oil described in the utility model can reclaim the braking kinetic energy of vehicle, obviously improves the fuel economy of vehicle.

4. driving engine in the electric series-parallel hybrid electric system of double planet row-type oil described in the utility model and super capacitor be energy output simultaneously, has improved the tractive performance of vehicle.

5. the electric series-parallel hybrid electric system of double planet row-type oil described in the utility model can reduce the access times and the intensity of drg, prolongs its service life, reduces its maintenance, upkeep cost.

6. the electric series-parallel hybrid electric system of double planet row-type oil described in the utility model can select for use the driving engine of smaller power to satisfy the cruising requirement of vehicle, reduces harmful gas emission, reduces the pollution to environment.

7. under the condition of selecting identical power source assembly for use, the electric series-parallel hybrid electric system of double planet row-type oil described in the utility model with respect to existing hybrid power system, can be exported bigger drive torque, and better car load dynamic property is provided; Under the condition of the identical propulsive effort of output, the electric series-parallel hybrid electric system of double planet row-type oil described in the utility model can be selected No. two less motors of peak torque for use, has reduced the dependence of system to motor.

8. the electric series-parallel hybrid electric system of double planet row-type oil described in the utility model, simple in structure, compact with respect to existing hybrid power system, requisite space is installed less, does not have additional original papers such as power-transfer clutch, is easy to control.

9. the electric series-parallel hybrid electric system of double planet row-type described in the utility model oil uses super capacitor, can obtain bigger horsepower output, and raising car load dynamic property also can more effective recovery braking energy, obviously improves the car load fuel economy.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further described:

Fig. 1 is the scheme drawing of electric series-parallel hybrid electric system structure composition of explanation double planet row-type oil described in the utility model and principle of work;

Fig. 2 is the propulsive effort transfer route scheme drawing of the double planet row-type electric series-parallel hybrid electric system of oil described in the utility model when pure electronic (EV) pattern;

Fig. 3 is the propulsive effort transfer route scheme drawing of the double planet row-type electric series-parallel hybrid electric system of oil described in the utility model under electronic infinite variable speed (EVT) pattern;

Fig. 4 is the front view that the preceding planet row structure in the electric series-parallel hybrid electric system of double planet row-type oil described in the utility model is formed;

Fig. 5 is the front view that the back planet row structure in the electric series-parallel hybrid electric system of double planet row-type oil described in the utility model is formed;

Fig. 6 is the front view that the electric series-parallel hybrid electric system structure of double planet row-type oil described in the utility model is formed;

Fig. 7 is the characteristic performance curve figure of selected driving engine in the electric series-parallel hybrid electric system of double planet row-type oil described in the utility model;

Fig. 8 is the characteristic performance curve figure of a selected motor in the electric series-parallel hybrid electric system of double planet row-type oil described in the utility model;

Fig. 9 is the characteristic performance curve figure of selected No. two motors in the electric series-parallel hybrid electric system of double planet row-type oil described in the utility model;

Figure 10 is that preceding planet row removes the left view that gear ring cover back structure is formed in the electric series-parallel hybrid electric system of double planet row-type oil described in the utility model;

Among the figure: 1. driving engine, 2. torsion vibration absorber, 3. before planet toothrow circle, 4.1 number inverter, 5. super capacitor, No. 6.2 inverters, 7. No. two motors, 8. back planet toothrow circle, 9. back planet seniority among brothers and sisters star-wheel, 10. the back planet is arranged sun wheel, 11. back planet rows of planetary framves, No. 12. motors, 13. preceding planet rows of planetary wheel, 14. preceding planet row sun wheels, 15. front planetary lines, 16. preceding planet row output shaft, No. 17.1 sleeves, 18. bearings cap shim, 19. front planetary line right side, 20. preceding planet toothrow snare, No. 21.2 sleeves, 22. engine output shafts, 23.1 number bearing pin sleeve, 24. preceding planet rows of planetary wheel bearing pin, No. 25.1 pads, planet rows of planetary frame right side, 26. back, 27.2 number bearing pin sleeve, 28.2 number pad, 29. back planet seniority among brothers and sisters star-wheel bearing pins, the connection pawl on 30. front planetary line right sides.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is explained in detail:

The purpose of this utility model provides the electric series-parallel hybrid electric system of a kind of novel oil, promptly provide a kind of with the oily electric series-parallel hybrid electric system of double planet wheel rows of mixing as the electromechanical coupling device, to realize the electronic infinite variable speed function of series-parallel hybrid electric system, the control engine operation is in best fuel-economy district, improve the car load fuel economy, realize minimum discharge, it is big to the motor dependence to overcome present parallel-serial hybrid power automobile simultaneously, needs big motor that the shortcoming of enough propulsive effort is provided.

Consult Fig. 1 and Fig. 4, the electric series-parallel hybrid electric system of double planet row-type described in the utility model oil mainly is made up of with preceding planet row output shaft 16 1, No. 1 inverter 4 of driving engine, 5, No. 2 inverters of super capacitor 6, No. two motors 7, motor 12, preceding planet row, a back planet row.

Planet row mainly is made up of the identical preceding planet rows of planetary wheel 13 of 3,4 structures of preceding planet toothrow circle, preceding planet row sun wheel 14,15, No. 1 sleeve 17 of front planetary line, bearing cap shim 18, front planetary line right side 19, identical preceding planet rows of planetary wheel bearing pin 24 and No. 1 pad 25 of 23,4 structures of No. 1 bearing pin sleeve that 21,4 structures of 20, No. 2 sleeves of preceding planet toothrow snare are identical before described in the utility model.

Planet rows of planetary wheel bearing pin 24 was installed on the front planetary line 15 equably before 4 identical preceding planet rows of planetary wheels 13 of structure adopted respectively, the stub end of preceding planet rows of planetary wheel bearing pin 24 and the counter sink of front planetary line 15 are interference fit, the rotation axis of the preceding planet rows of planetary wheel 13 that 4 structures are identical is on the circumference that waits radius of distance front planetary line 15 rotation axiss, the rotation axis of the preceding planet rows of planetary wheel 13 that 4 structures are identical and the rotation axis of front planetary line 15 parallel, the preceding planet rows of planetary that the identical preceding planet rows of planetary wheel 13 of 4 structures is identical with 4 structures is taken turns between the bearing pin 24 to being rotationally connected, in order to reduce friction between the two, between is equipped with bearing pin sleeve 23 No. 1, be installed in the outside tooth of the identical preceding planet rows of planetary wheel 13 of 4 structures on the front planetary line 15 and the internal tooth of preceding planet toothrow circle 3 and be meshed, the inner tines of the preceding planet rows of planetary wheel 13 that 4 structures are identical and the tooth of preceding planet row sun wheel 14 are meshed.The left end of preceding planet toothrow circle 3 is that spline is connected with the right-hand member of preceding planet toothrow snare 20, and the left end of preceding planet toothrow snare 20 centre holes adopts key to be connected with the right-hand member of engine output shaft 22.Described front planetary line is an assembly set, it promptly is made up of front planetary line 15 and front planetary line right side 19 left and right two parts, and front planetary line right side 19 and front planetary line 15 are welded into one by the pawl 30 that is connected on front planetary line right side.For the ease of the axial location of planet row before adjusting, on front planetary line right side 19, install bearing cap shim 18 additional and be bolted connection, the centre hole of bearing cap shim 18 and preceding planet row sun wheel 14 are for being rotationally connected.Between preceding planet rows of planetary wheel 13 and front planetary line 15 and before preceding planet rows of planetary between planet rows of planetary wheel 13 and the front planetary line right side 19 take turns and be set with No. 1 pad 25 of structure identical (8 altogether) on the bearing pin 24, the medial surface of No. 1 pad 25 that the both ends of the surface of preceding planet rows of planetary wheel 13 are identical with structure respectively is a sliding block joint, and No. 1 pad 25 is taken turns bearing pin 24 for being rotationally connected with preceding planet rows of planetary.The central through hole of the described front planetary line 15 that the identical preceding planet rows of planetary wheel 13 of 4 structures is installed is an interference fit with the left side section axle of preceding planet row output shaft 16.

Consult Fig. 1 and Fig. 5, planet row in back described in the utility model mainly ranks star-wheel bearing pin 29 by identical 27, No. 2 pads 28 of No. 2 bearing pin sleeves of the identical back planet seniority among brothers and sisters star-wheel 9 of 8,4 structures of back planet toothrow circle, back planet row sun wheel 10, back planet rows of planetary frame 11,26,4 structures in planet rows of planetary frame right side, back back planet identical with 4 structures and forms.

4 identical back planet seniority among brothers and sisters star-wheels 9 of structure adopt back planet seniority among brothers and sisters star-wheel bearing pin 29 to be installed in equably on the back planet rows of planetary frame 11 respectively, the stub end of back planet seniority among brothers and sisters star-wheel bearing pin 29 is an interference fit with the counter sink of back planet rows of planetary frame (11), the rotation axis of the back planet seniority among brothers and sisters star-wheel 9 that 4 structures are identical is on the circumference of radiuses such as back planet rows of planetary frame 11 rotation axiss, the rotation axis of the back planet seniority among brothers and sisters star-wheel 9 that 4 structures are identical and the rotation axis of back planet rows of planetary frame 11 parallel, the back planet that the identical back planet seniority among brothers and sisters star-wheel 9 of 4 structures is identical with 4 structures is ranked between the star-wheel bearing pin 29 to being rotationally connected, in order to reduce friction between the two, between is equipped with bearing pin sleeve 27 No. 2, No. 2 bearing pin sleeve 27 is ranked between the star-wheel 9 to captiveing joint with the back planet, between No. 2 bearing pin sleeves 27 and the back planet seniority among brothers and sisters star-wheel bearing pin 29 for being rotationally connected, be installed in the outside tooth of the identical back planet seniority among brothers and sisters star-wheel 9 of 4 structures on the back planet rows of planetary frame 11 and the internal tooth of back planet toothrow circle 8 and be meshed, the inner tines of the back planet seniority among brothers and sisters star-wheel 9 that 4 structures are identical and the tooth of back planet row sun wheel 10 are meshed.The left end of back planet row sun wheel 10 is connected with the mouth key of No. two motors 7.Back planet toothrow circle 8 is connected on the casing by welding.Described back planet rows of planetary frame is an assembly set, it promptly is made up of back planet rows of planetary frame 11 and planet rows of planetary frame right side, back 26 left and right two parts, back planet rows of planetary frame right side 26 with after planet rows of planetary frame 11 by after the pawl that is connected on planet rows of planetary frame right side be welded into one.No. 2 pads 28 of suit (amounting to 8) on the back planet seniority among brothers and sisters star-wheel bearing pin 29 between back planet seniority among brothers and sisters star-wheel 9 and the back planet rows of planetary frame 11 and between back planet seniority among brothers and sisters star-wheel 9 and the planet rows of planetary frame right side, back 26, the both ends of the surface of back planet seniority among brothers and sisters star-wheel 9 are sliding block joint with the medial surface of No. 2 pads 28 respectively, and No. 2 pads 28 and back planet seniority among brothers and sisters star-wheel bearing pin 29 are for being rotationally connected.The right-hand member endoporus on back planet rows of planetary frame right side 26 is processed as splined hole, is used for the takeoff output of total system.

The electric series-parallel hybrid electric system of described double planet row-type oil also comprises 1, No. 1 inverter 4 of driving engine, 5, No. 2 inverters of super capacitor 6, No. two motors 7, a motor 12 and preceding planet row output shaft 16.

Planet row output shaft 16 is set to stepped shaft before described, form with right section axle by left side section axle, stage casing axle, left side section axle for the major diameter shaft part is and front planetary line 15 centre holes are the shaft part of interference fit, the stage casing axle for and preceding planet row sun wheel 14 and the shaft part of a motor 12 for being rotationally connected, right section axle be the splined shaft section that is equipped with No. two motors 7; On the rotation axis of preceding planet row output shaft 16, from left to right process a long blind hole, and on preceding planet row output shaft 16, promptly radially process the radial direction through hole that the long blind hole on 2-3 and the axis communicates with preceding planet row sun wheel 14 equipped parts, its effect is the conveying lubricating oil.Preceding planet row output shaft 16 inserts in the centre hole of preceding planet emptying heart sun wheel 14, more particularly, before the preceding planet row sun wheel 14 that the inboard of the preceding planet rows of planetary wheel 13 identical with 4 structures is meshed is sleeved on the planet row output shaft 16 for being rotationally connected, in order to reduce friction between the two, install No. 2 sleeves 21 and No. 1 sleeve 17 successively additional at the two ends, the left and right sides of preceding planet row sun wheel 14 central through holes.

Wherein, driving engine 1, motor 12, No. two motors 7 and super capacitor 5 are all selected existing procucts for use, and concrete type selecting needs in conjunction with car load basic specification and designing requirement, describes in detail and consults table 1 and table 2.

Table 1 car load basic specification

Table 2 designing requirement

Described driving engine 1 is the major impetus source of car load, and its watt level need satisfy the dynamic property requirement of cruising with maximum speed on straight road surface, as the formula (1).In the formula, P _eBe the demand power of driving engine 1, V _aBe speed of operation, η _tBe driving efficiency, M is the fully loaded quality of car load, and g is an acceleration due to gravity, f _rBe the coefficient of rolling resistance of vehicle, ρ _aBe density of air, C _DBe aerodynamic drag factor, A is the wind area of vehicle, and i is the gradient.

$P_e=\frac{V_a}{{1000\mathrm{\η}}_t}({\mathrm{Mgf}}_r+\frac{1}{2}{\mathrm{\ρ}}_a{C}_D{\mathrm{AV}}_a^2+\mathrm{Mgi})---\left(1\right)$

Consult Fig. 7, in addition, the power of described driving engine 1 also requires the average power greater than the target circulation operating mode, to guarantee electric quantity balancing in the process of moving, avoids the super capacitor deep discharge.According to the designing requirement shown in car load basic specification shown in the table 1 and the table 2, the principal parameter of selected engine product is as shown in table 3.The characteristic performance curve figure of this driving engine as shown in FIG..Simultaneously, according to the characteristic performance curve figure of driving engine 1, select engine operation in efficient district, promptly 1100rpm is to 2200rpm.

Table 3 driving engine principal parameter

Peak torque	430Nm@2000rpm
		Peak power	103kw@2200rpm
Discharge capacity (ml)	4980
		Idling (rpm)	900
Maximum speed of revolution (rpm)	2500

Consult Fig. 8, a described motor 12 is used at the rotating speed between decoupling zero driving engine 1 and the wheel under the different operating modes, make the rotating speed of driving engine 1 be independent of the rotating speed of wheel, cooperate the torque decoupler between 7 pairs of driving engines 1 of No. two motors and the wheel, can guarantee that driving engine 1 works in efficient district, to improve the car load fuel economy.

At first, for the rotation speed relation of a motor 12, requiring in the speed of a motor vehicle is zero, when promptly the rotating speed of front planetary line 15 is zero, and the maximum functional rotating speed that the maximum speed of a motor 12 can balanced engine, as the formula (2).In the formula, ω _{MG1_max}Be the maximum speed of a motor 12, ω _EexpMaximum functional rotating speed for driving engine 1 is 2200rpm, k ₁Be preceding planet row's characteristic parameter, for the number of teeth and the preceding planet of preceding planet toothrow circle 3 are arranged the ratio of the number of teeth of sun wheel 14.

ω _{MG1_max}〉=k ₁ω _Eexp(2) secondly, the torque of the torque of a motor 12 and driving engine 1 should be satisfied the relation suc as formula (3), has enough abilities to adjust the rotating speed of driving engine 1 to guarantee a motor 12.In the formula, T _EmaxBe the maximum torque of driving engine 1, T _{MG1_max}Torque when being motor 12 maximum speeds.

T _emax≤k ₁T _{MG1_max} （3）

The concrete numerical value of substitution, the principal parameter of a selected motor 12 is as shown in table 4, and its characteristic performance curve figure is as shown in FIG..

Motor principal parameter of table 4

Motor type (exchange/PM)	PM
		Motor rated power (kW)	50

Motor torque rating (Nm)	240
		Motor peak power (kW)	100
Motor peak torque (Nm)	480
		Maximum speed of revolution (rpm)	6000
Minimum steady speed (rpm)	500

Consult Fig. 9, described No. two motors 7 require can provide peak power in limit accelerating mode, to guarantee the tractive performance of car load.In view of the above, in limit accelerating mode, at first calculate the surplus power that driving engine overcomes air resistance, rolling resistance and grade resistance horsepower, suc as formula (4), wherein t _iFor driving engine opens time in the machine moment, t _aFor quickening the time constantly of ending, P _EMFor driving engine is delivered to the power of wheel, P by the mechanical path of EVT _rBe resistance power (equaling air resistance, rolling resistance sum grade resistance horsepower sum).

$P_{e,a}=\frac{1}{(t_a-t_i)}{\∫}_{\mathrm{ti}}^{\mathrm{ta}}(P_{\mathrm{eM}}-P_r)\mathrm{dt}---\left(4\right)$

In addition, need calculate the resistance due to acceleration power P _Acc, as the formula (5).Finally, the power of No. two motors 7 equals resistance due to acceleration power and deducts the driving engine surplus power, as the formula (6).

$P_{\mathrm{acc}}=\frac{\mathrm{\&delta;}\&CenterDot;M\&CenterDot;{\mathrm{<figure-callout\; id="2"\; label="v"\; filenames="HDA00002899909200011.png,HDA00002899909200012.png"\; state="\{\{state\}\}">v</figure-callout>}}^2}{3600\&CenterDot;t_a\&CenterDot;{\mathrm{\&eta;}}_t\&CenterDot;2\&CenterDot;3.6}---\left(5\right)$

P _m＝P _acc-P _e,a（6）

In the formula (5): δ is a correction coefficient of rotating mass, and v is the limiting condition end of a period speed of a motor vehicle constantly, is 50km/h.

Secondly, the maximum speed of revolution of No. two motors 7 also should satisfy the requirement of car load maximum speed, as the formula (7).In the formula, i ₂For the back planet is arranged formed fixed speed ratio, v _MaxBe the maximum speed that requires, be 80km/h herein, and r is a vehicle wheel roll radius, i _dBe the main reduction gear reduction ratio.

${\mathrm{<figure-callout\; id="2"\; label="n\; MG"\; filenames="HDA00002899909200011.png,HDA00002899909200012.png"\; state="\{\{state\}\}">n</figure-callout>}}_{\mathrm{MG}}\&GreaterEqual;i_2\&CenterDot;\frac{v_{\mathrm{m\; a\; x}}}{3.6r}\&CenterDot;\frac{30}{\mathrm{\&pi;}}\&CenterDot;i_d---\left(7\right)$

Finally, need to calculate the basic fast point of No. two motors 7, often work in efficient zone preferably to guarantee No. two motors according to the speed of a motor vehicle of the normal operation of vehicle.To sum up, the principal parameter that can obtain No. two motors 7 is as shown in table 5, and its characteristic performance curve figure as shown in FIG..

The principal parameter of No. two motors of table 5

Motor type (exchange/PM)	PM
		Motor rated power (kW)	70
Motor torque rating (Nm)	280
		Motor peak power (kW)	140
Motor peak torque (Nm)	560

Maximum speed of revolution (rpm)	7000
		Minimum steady speed (rpm)	500

Described super capacitor 5 is aspect power, and requirement should have enough power to satisfy the requirement of vehicle power, and promptly in the pick-up time of appointment, the power sum of driving engine 1 and super capacitor 5 should be able to satisfy the overall power requirement of vehicle limiting condition.Aspect energy, requirement is under limiting condition, in the pick-up time of appointment, the energy that super capacitor 5 can provide in the SOC discharge range that allows should satisfy whole full load accelerating mode to the super capacitor energy requirement, be in the accelerating mode, the energy of super capacitor 5 deducts the electric energy total amount that 12 in motor can provide for No. two motor 7 required gross energies.Principal parameter according to the above super capacitor 5 that requires gained is as shown in table 6.

Table 6 super capacitor principal parameter

Type	The carbon back super capacitor
		Total internal resistance	58.3mohm
Total volume	20.27F
		Total joint number	148
Voltage class	400V，250V
		The monomer parameter	2.7V，3000F，0.394mohm

Consult Fig. 1 and Fig. 6, the spline axle head of described engine output shaft 22 is connected by spline pair with the splined hole of preceding planet toothrow snare 20 centers, preceding planet row is connected with the splined hole of the hollow shaft left end of a motor 12 by the spline axle head of preceding planet row sun wheel 14 right-hand members, planet was arranged on the output shaft 16 to being rotationally connected before No. one motor 12 was contained in by its hollow shaft sleeve, the hollow shaft that preceding planet row output shaft 16 passes a motor 12 is connected by spline pair with the input end of No. two motors 7, the mouth of No. two motors 7 is connected with the spline axle head of back planet row sun wheel 10 left ends, and the splined hole of 26 centers, back planet rows of planetary frame right side is used for the takeoff output of whole hybrid power system is arrived drive wheels.

In addition, described No. 1 inverter 4 and No. 2 inverters 6 require to select according to the voltage class of a motor 12 and No. two motors 7 respectively.Three joints of a described motor 12 connect three alternating current input and output joints of No. 1 inverter 4 respectively by cable, the positive and negative connector of No. 1 inverter 4 adopts cable to be connected with the both positive and negative polarity of super capacitor 5 respectively, three joints of No. two motors 7 adopt cable to be connected with three alternating current input and output joints of No. 2 inverters 6 respectively, the positive and negative connector of No. 2 inverters 6 adopts cable to be connected with the both positive and negative polarity of super capacitor 5 respectively, and the positive and negative connector of No. 1 inverter 4 also adopts cable to link to each other with the positive and negative connector of No. 3 inverters 6 respectively.

The mode of operation of the electric series-parallel hybrid electric system of double planet row-type described in the utility model oil is as shown in Table:

Mode of operation	Energy source
		Electric-only mode	Super capacitor	5
The electronic infinite variable speed pattern	Driving engine 1 and super capacitor 5
		The regenerative brake pattern	Regenerating braking energy

1. electric-only mode

Consult Fig. 2, electric-only mode is mainly used in the startup vehicle.Under this pattern, powered vehicle institute energy requirement is converted into mechanical energy all from super capacitor 5 by No. two motors 7, through after after planet row's deceleration increases torsion effect, output to the car load drive axle.

2. electronic infinite variable speed pattern

Consult Fig. 3, the electronic infinite variable speed pattern can be divided into driving engine 1 independent drive again and unite driving two spermotypes.The common trait of this two spermotype is: driving engine 1 a horsepower output part is through preceding planet row, output to the car load drive axle by mechanical path, another part is converted into electric power through preceding planet row by a motor 12, is converted into mechanical horsepower by No. two motors 7 again and outputs to the car load drive axle.The difference of two spermotypes is: under the driving engine 1 independent drive pattern, whole power are from driving engine 1, and under the associating drive pattern, part power is from super capacitor 5.

The division of two spermotypes mainly is a maximum output power of optimizing working curve according to driving engine 1.When the car load demand power is optimized the maximum power of working curve less than driving engine 1, be in driving engine 1 independent drive pattern, all power are from driving engine 1, and control driving engine 1 works in and optimize on the working curve, obtain fuel economy preferably; When the car load demand power was optimized the maximum power of working curve greater than driving engine 1, driving engine 1 was operated on the optimal curve maximum power point, and not enough car load demand power is supplied by super capacitor 5.

3. regenerative brake pattern

The regenerative brake pattern is divided into motor 7 braking and two kinds of situations of Associated brake No. two according to the state of automobile.

Under the situation of non-emergent braking, and the speed of a motor vehicle enters the regenerative brake pattern when being higher than a certain limit value.If the demand braking torque of this moment is less than 7 maximum braking torques that can provide of No. two motors, just by No. two motor 7 independent brakes, the regenerating braking energy that is reclaimed is stored in the super capacitor 5.If the braking torque of demand is greater than 7 maximum braking torques that can provide of No. two motors, just by No. two motors 7 and mechanical brake Associated brake, part energy is reclaimed by No. two motors 7, is stored in the super capacitor, and another part energy is dissipated by the form of mechanical brake with heat energy.

The principle features of the electric series-parallel hybrid electric system of double planet row-type oil:

1. entire car controller is according to the aperture (also can take all factors into consideration the demand power value) of the position/throttle gate of the speed of a motor vehicle and acceleration pedal, will be to guarantee that driving engine 1 is operated in the optimum efficiency zone, (using when being acceleration or brish acceleration) is prerequisite to guarantee to have the certain energy deposit in the super capacitor 5 simultaneously, by adjusting the output torque of motor 12 rotating speeds and No. two motors 7, reasonable distribution demand torque between driving engine 1 and No. two motors 7.

2. the function of a motor 12 here is to adjust the rotating speed of driving engine 1 in the rotary speed area of the best, promptly the rotating speed decoupling zero mutually of the rotating speed of driving engine 1 and wheel, but it should be noted that, because the restriction of the maximum speed of revolution of a motor 12, can only be in the restriction of to a certain degree the releasing speed of a motor vehicle to engine speed.

No. two motors 7 have that the high torque (HT) output characteristic can increase or additional car load drive axle on come from the torque of driving engine 1 to satisfy the road surface torque-demand, promptly the torque of driving engine 1 output decoupling zero from the demand torque of road surface is come out, removed the restriction of the road surface demand torque that causes because of mechanical connection between the axle drive shaft of driving engine 1 and car load driving engine 1 torque.

4. the electric series-parallel hybrid electric system of this double planet row-type oil can obtain bigger moment transmitting ratio, reduced the torque request of torque decoupler requirement to No. two motors 7, thereby can select peak torque less, promptly No. two less motors 7 of size are easier to be arranged in car load.

Therefore, guaranteeing that car load is under the prerequisite that enough dynamic property require, driving engine 1 can run on the fuel economy zone of optimum efficiency, obtain higher fuel economy and emission performance, and the electric series-parallel hybrid electric system of this double planet row-type oil can make car load that the demand of maximum engine torque or maximum power is reduced, thereby when car load dynamic assembly parameter designing, reduced, made selection and design obtain bigger degree of freedom driving engine 1 to driving engine 1 dimensional characteristic.

Claims (10)

1. the electric series-parallel hybrid electric system of double planet row-type oil, comprise driving engine (1), preceding planet row and back planet row, it is characterized in that the electric series-parallel hybrid electric system of described double planet row-type oil also comprises No. 1 inverter (4), super capacitor (5), No. 2 inverters (6), No. two motors (7), a motor (12) and preceding planet row output shaft (16);

The left end of planet row's output shaft (16) before planet row is sleeved on before described, preceding planet row's output shaft (16) on planet row right side was gone up to being rotationally connected before a motor (12) was sleeved on, the left end of a motor (12) is that spline pair is connected with the right-hand member of preceding planet row's sun wheel (14) of preceding planet row, the right-hand member of engine output shaft (22) is that spline pair is connected with the left end of preceding planet row's preceding planet toothrow snare (20), the input end of No. two motors (7) is that spline pair is connected with the right-hand member of preceding planet row's output shaft (16), and the mouth of No. two motors (7) is that spline pair is connected with the left end of back planet row's sun wheel (10) of back planet row; A motor (12) adopts cable to be connected with an inverter (4), No. two motors (7) adopt cable to be connected with No. two inverters (6), an inverter (4) adopts cable to be connected with super capacitor (5), No. two inverters (6) adopt cable to be connected with super capacitor (5), adopt cable to connect between an inverter (4) and No. two inverters (6).

2. according to the electric series-parallel hybrid electric system of the described double planet row-type oil of claim 1, it is characterized in that described engine output shaft (22), preceding planet toothrow snare (20), preceding planet row output shaft (16), preceding planet row sun wheel (14), a motor (12), No. two motors (7) are arranged the rotation axis conllinear of sun wheel (10) with the back planet.

3. according to the electric series-parallel hybrid electric system of the described double planet row-type oil of claim 1, it is characterized in that the left end of planet row's output shaft (16) was meant before described preceding planet row was sleeved on:

Front planetary line (15) and preceding planet row's output shaft (16) among the preceding planet row are interference fit, and the preceding planet among the preceding planet row is arranged sun wheel (14) and arranged output shaft (16) for being rotationally connected with preceding planet.

4. according to the electric series-parallel hybrid electric system of the described double planet row-type oil of claim 1, it is characterized in that, a described motor (12) adopts cable to be connected with an inverter (4), No. two motors (7) adopt cable to be connected with No. two inverters (6), an inverter (4) adopts cable to be connected with super capacitor (5), No. two inverters (6) adopt cable to be connected with super capacitor (5), adopt cable to connect between an inverter (4) and No. two inverters (6) and are meant:

Three joints of a described motor (12) connect three alternating current input and output joints of No. 1 inverter (4) respectively by cable, the positive and negative connector of No. 1 inverter (4) adopts cable to be connected with the both positive and negative polarity of super capacitor (5) respectively, three joints of No. two motors (7) adopt cable to be connected with three alternating current input and output joints of No. 2 inverters (6) respectively, the positive and negative connector of No. 2 inverters (6) adopts cable to be connected with the both positive and negative polarity of super capacitor (5) respectively, and the positive and negative connector of the positive and negative connector of No. 1 inverter (4) and No. 3 inverters (6) adopts cable to link to each other.

5. according to the electric series-parallel hybrid electric system of the described double planet row-type oil of claim 1, it is characterized in that planet toothrow circle (3), 4 preceding planet rows of planetary wheels (13), preceding planets row sun wheel (14), front planetary line (15), front planetary line right side (19), preceding planet toothrow snares (20) and 4 preceding planet rows of planetary wheel bearing pins (24) that structure is identical that structure is identical before described preceding planet package is drawn together;

Planet rows of planetary wheel bearing pin (24) was installed on the front planetary line (15) equably before 4 identical preceding planet rows of planetary wheels (13) of structure adopted respectively, the preceding planet rows of planetary that the identical preceding planet rows of planetary wheel (13) of 4 structures is identical with 4 structures is taken turns between the bearing pin (24) to being rotationally connected, the outside tooth of the preceding planet rows of planetary wheel (13) that 4 structures are identical and the internal tooth of preceding planet toothrow circle (3) are meshed, the inner tines of the preceding planet rows of planetary wheel (13) that 4 structures are identical and the tooth of preceding planet row's sun wheel (14) are meshed, before the left end of planet toothrow circle (3) be that spline pair is connected with the right-hand member of preceding planet toothrow snare (20), the front planetary line right side (19) and front planetary line (15) the employing welding manner that are positioned at identical preceding planet rows of planetary wheel (13) right side of 4 structures fuse.

6. according to the electric series-parallel hybrid electric system of the described double planet row-type oil of claim 5, it is characterized in that, the rotation axis of the preceding planet rows of planetary wheel (13) that described 4 structures are identical is evenly distributed on the circumference that waits radius of front planetary line (15) rotation axis, the rotation axis of the preceding planet rows of planetary wheel (13) that 4 structures are identical and the rotation axis of front planetary line (15) parallel, and the preceding planet rows of planetary that the identical preceding planet rows of planetary wheel (13) of 4 structures is identical with 4 structures is taken turns between the bearing pin (24) and is separately installed with No. 1 bearing pin sleeve (23).

7. according to the electric series-parallel hybrid electric system of the described double planet row-type oil of claim 1, it is characterized in that, planet row's output shaft (16) is set to stepped shaft before described, by left side section axle, the stage casing axle is formed with right section axle, left side section axle for the major diameter shaft part is and front planetary line (15) centre hole is the shaft part of interference fit, the stage casing axle for and preceding planet row's preceding planet arrange the shaft part that sun wheel (14) and a motor (12) become to be rotationally connected, the splined shaft section that right section axle is and No. two motors (7) are equipped, on the rotation axis of preceding planet row's output shaft (16), from left to right process a long blind hole, and with the equipped preceding planet row's output shaft (16) of preceding planet row's sun wheel (14) on radially process the radial direction through hole of the conveying lubricating oil that the long blind hole on 2 to 3 and the axis communicates.

8. according to the electric series-parallel hybrid electric system of the described double planet row-type oil of claim 1, it is characterized in that, No. 2 sleeves (21) and No. 1 sleeve (17) before the two ends, the left and right sides of planet row sun wheel (14) central through hole add successively and are sleeved on before described on planet row's output shaft (16), installing bearing cap shim (18) additional in the right side of front planetary line right side (19) is bolted connection, the centre hole of bearing cap shim (18) and preceding planet row's sun wheel (14) are for being rotationally connected, preceding planet rows of planetary wheel bearing pin (24) before reaching between preceding planet rows of planetary wheel (13) and front planetary line (15) between the planet rows of planetary wheel (13) and front planetary line right side (19) is gone up No. 1 pad of suit (25), before the both ends of the surface of planet rows of planetary wheel (13) be sliding block joint with the medial surface of No. 1 pad (25) respectively, No. 1 pad (25) and preceding planet rows of planetary wheel bearing pin (24) are for being rotationally connected.

9. according to the electric series-parallel hybrid electric system of the described double planet row-type oil of claim 1, it is characterized in that described back planet row includes back planet toothrow circle (8), 4 back planet seniority among brothers and sisters star-wheel (9), back planet row sun wheel (10), back planet rows of planetary frame (11), planet rows of planetary frame right sides, back (26) and 4 back planet seniority among brothers and sisters star-wheel bearing pins (29) that structure is identical that structure is identical;

4 identical back planet seniority among brothers and sisters star-wheels (9) of structure adopt back planet seniority among brothers and sisters star-wheel bearing pin (29) to be installed in equably on the back planet rows of planetary frame (11) respectively, the back planet that the identical back planet seniority among brothers and sisters star-wheel (9) of 4 structures is identical with 4 structures is ranked between the star-wheel bearing pin (29) to being rotationally connected, the outside tooth of the back planet seniority among brothers and sisters star-wheel (9) that 4 structures are identical and the internal tooth of back planet toothrow circle (8) are meshed, the inner tines of the back planet seniority among brothers and sisters star-wheel (9) that 4 structures are identical and the tooth of back planet row's sun wheel (10) are meshed, and back planet rows of planetary frame right side (26) fuses with back planet rows of planetary frame (11) employing welding manner.

10. according to the electric series-parallel hybrid electric system of the described double planet row-type oil of claim 9, it is characterized in that, the rotation axis of the back planet seniority among brothers and sisters star-wheel (9) that described 4 structures are identical is evenly distributed on the circumference of radiuses such as back planet rows of planetary frame (11) rotation axis, the rotation axis of the back planet seniority among brothers and sisters star-wheel (9) that 4 structures are identical and the rotation axis of back planet rows of planetary frame (11) parallel, and the back planet that the identical back planet seniority among brothers and sisters star-wheel (9) of 4 structures is identical with 4 structures is ranked between the star-wheel bearing pin (29) No. 2 bearing pin sleeves (27) are installed.

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