CN2587696Y - Double-motor moixed power system for car - Google Patents

Abstract

The utility model relates to double-motor mixed power system for cars, and belongs to a mixed power device of cars using fuel oil and electric power as energy sources. The utility model comprises an internal combustion engine, motors, a clutch, a transmission case, a power battery, a braking system and an entire car automatic control system. The utility model is characterized in that the utility model is provided with a main and an auxiliary motors, wherein, a rotor shaft of the main motor 25 is connected with an output shaft of the transmission case 24, and a rotor shaft of the auxiliary motor is connected with a crank shaft of the internal combustion engine 1. The main and the auxiliary motors 25 and 22 are electrically connected with the battery 28. The utility model overcomes the disadvantages that complicated structures and high manufacturing cost exist in the prior art. The utility model has the advantages of favorable fuel oil economy and low discharge.

Description

The double-motor hybrid vehicle power system

The automobile hybrid power device that it is propulsion source that technical field the utility model relates to fuel oil and two kinds of energy of electric power.

Background technology is present, and people's pay attention to day by day is to the protection of environment and the use effectively and reasonably of the energy.Therefore, hybrid vehicles efficient, energy-saving and environmental protection just become the development tendency of auto trade.Because the new and high technology in fields such as current many relevant automobiles, the energy, electronics, computing machine, control that the hybrid vehicle technology is integrated, its development and exploitation need great amount of manpower and material resources.Abroad, the history of more than ten years has been experienced in the development of hybrid vehicle and exploitation, and comparative maturity and form the Toyota and the Honda company that have only Japan of industrialization.At home, all begin to pay attention to and set about carrying out development and exploitation from government, R﹠D institution, universities and colleges to automobile enterprise to hybrid vehicle.

The power system structural shape of hybrid vehicle has series, parallel and three kinds of basic versions of series-parallel connection, and concrete structural shape has various deformation, and merits and faults is respectively arranged.Very representative is the IMA parallel system of THS combined hybrid system and the Insight of Honda company of the Prius of Toyota Company.The THS system connects combustion engine, electrical generator and M/G (motor/generator) by sun and planet gear, the takeoff output of combustion engine and M/G motor is finished synthetic in sun and planet gear, finish the driving of vehicle to wheel through change speed gear box, main reduction gear, transmission shaft, simultaneously, the combustion engine energy remaining by electrical generator to power battery charging.Wherein, the M/G motor can be finished the driving of vehicle separately and travel, and possesses braking energy recovery function.Therefore, there is the pure motor driving pattern in this system; The IMA system finishes the function of starting apparatus combustion engine and power-assisted by arrange M/G (motor/generator) between combustion engine and power-transfer clutch.Because M/G is a low-power machine, can not exercise by the independent drive vehicle.Therefore, this system does not have the pure motor driving pattern.

The THS system of the Prius of Toyota possesses the pure motor driving pattern, belongs to the strong hybrid electric form, but its power combination mechanism complexity, volume is big, the manufacturing cost height.Though the IMA system of Honda Insight is simple in structure, motor only possesses power-aid function, does not possess the pure motor driving pattern, belongs to the Weak hybrid power form.

The summary of the invention the purpose of this utility model is for the power combination mechanism complexity that solves present hybrid power automobile power system existence, volume is big, manufacturing cost is high, or do not possess the shortcoming of pure motor driving pattern, a kind of New Dual-motor Hybrid Propulsion automobile dynamic system is provided, it is simple in structure, layout is compact, and has good fuel economy and anti-emission carburetor.

The utility model double-motor hybrid vehicle power system, comprise combustion engine, motor, power-transfer clutch, change speed gear box, electrokinetic cell, brake system and car load autonomous cruise speed system, it is characterized in that having major and minor two motors, the rotor shaft of its main motor 5 is connected with the output shaft of change speed gear box 4, and the rotor shaft of auxiliary-motor 2 is connected with the bent axle of combustion engine 1: major and minor motor 5,2 and battery 8 electrically connect.

The utility model adopts major and minor two motors, simple in structure, arranges under the compact condition, guarantees that vehicle has good fuel economy and anti-emission carburetor.

Description of drawings Fig. 1 is a basic structure pattern scheme drawing of the present utility model.Fig. 2 is the differentiation structural shape scheme drawing on Fig. 1 architecture basics.Fig. 3 is the utility model power system principle of work scheme drawing.

The embodiment that provides with regard to accompanying drawing below the specific embodiment is described in further detail the structure of the utility model.With reference to Fig. 1, the utility model power system is connected to form successively by combustion engine 1, auxiliary-motor 2, power-transfer clutch 3, change speed gear box 4, main motor 5, main reduction gear and diff 6, wheel 7, and auxiliary-motor 2, main motor 5 electrically connect with electrokinetic cell 8 respectively.Be characterized in main motor 5 be arranged in change speed gear box 4 near, the rotor shaft of motor 5 directly links to each other with the output shaft of change speed gear box 4, auxiliary-motor 2 is arranged between combustion engine 1 and the power-transfer clutch 3, the rotor shaft of motor 2 connects with the bent axle of combustion engine.

As shown in Figure 2, the main motor 5 in the structure of Fig. 1 is formed also can be connected with change speed gear box 4 output shafts by transmission device 9, and auxiliary-motor 2 also can be connected by the bent axle of transmission device 12 with combustion engine 1; For at main motor 5, auxiliary-motor 2 not under the service condition, the energy disconnection is connected with change speed gear box 4 or combustion engine 1, to reduce unnecessary waste of power, also can be between main motor 5 and the change speed gear box 4, between auxiliary-motor 2 and the combustion engine 1 power-transfer clutch 10, power-transfer clutch 13 are set.Auxiliary-motor 2 also can be connected with transmission device 12 by change-speed box 11.Wherein, the concrete form of main motor transmission mechanism 9 and auxiliary-motor transmission device 12 can adopt one of belt-driving, chain gear or gear transmission mode.The connecting mode of the above major and minor motor respectively is integral, and is separate, and its various version combinations will constitute the multiple differentiation structural shape of this novel hybrid system.

The structural advantages of this patented invention is to adopt dual motors system, and vehicle possesses the pure motor driving pattern.Cooperative mechanical step change transmission (manually or autoshift), simple and compact for structure, in light weight, cost is low, be easy in the system powered by conventional energy of existing vehicle, implement.In addition, 7 of main motor 5 and driving wheel of vehicle are with the fixed speed ratio transmission, in the gearshift procedure of vehicle ', control by system, main motor 5 can startup work under power-transfer clutch 3 open circuited situations, thereby guarantee the power failure-free of travelling of vehicle, has therefore improved the travelling comfort of vehicle.Moreover the drive path that motor 5 and wheel are 7 is short, and electricity drives and braking energy organic efficiency height.

The principle of work of the basic structure pattern of the power system of this novel hybrid automobile and differentiation structural shape is basic identical.Be the principle of work that example illustrates the new type power system with a kind of structural shape that develops below.

With reference to Fig. 3, among the figure: 21 transmission devices; 22 combustion engines; 23 combustion engine ECU; The 24th, standby starter; 25 power-transfer clutchs; 26 right side axle drive shafts; 27 change speed gear boxs; 28 gearbox controls; 29 main motors; 30 main electric machine controllers; 31 signal lines; 32. key switch; 33 entire car controllers; 34 brake pedals; 35 acceleration pedals; 36 battery management units; 37 trailing wheels; 38 back axles; 39 electrokinetic cells; 40 switch boxs; 41 high-tension lines; The 42DC/DC conv; 43 main motor inverter; 44 conventional batteries; 45 auxiliary-motor inverters; 46 left side axle drive shafts; 47 front-wheels; 48 low-voltage circuits; 49 alternating current circuits; 50 auxiliary-motors.

In this structural shape, main motor 29 is arranged in change speed gear box 27 (AMT form, and main reduction gear is included) rear end, and rotor axis of electric directly connects with output shaft of gear-box; Auxiliary-motor 50 is arranged in combustion engine one side, connects with the I. C. engine crankshaft front end by belt.The inverter 43/45 and the controller 30 that also comprise major and minor motor in the hybrid power system; The controller 28 of mechanical gearbox AMT; Entire car controller 33; High voltage power battery 39 and battery management unit 36 wait other assembly.

1) state before the cycling start: after key switch 32 was opened, the car load control unit 33 (TCU) of vehicle checked at first whether the state of each system is normal, made vehicle be in normal cycling start state then.

2) cycling start state: when chaufeur hangs up gear, and during bend the throttle 35, entire car controller 33 receives the cycling start signal, and notify main electric machine controller 30 that main motor 29 is started working, electric energy from electrokinetic cell through switch box 40, main motor inverter 43 to main motor, electric motor starting work, to wheel 47, travel by powered vehicle through change speed gear box 27 output shafts, main reduction gear, transmission shaft 26/46 for power.

3) low speed driving state: behind vehicle start, mainly travel by main motor 29 powered vehicle, this moment, power-transfer clutch 25 did not engage.When electrokinetic cell 39 quantity of electric chargies during less than certain numerical value, entire car controller 33 (TCU) just notifies combustion engine control unit 23 (ECU) to allow combustion engine 22 start working, auxiliary-motor this moment starting apparatus combustion engine ignition operation under the supply of electrical energy of electrokinetic cell 39, power-transfer clutch 25 engages, and power arrives wheel through power-transfer clutch 25, change speed gear box 27, main reduction gear, transmission shaft 26/46.Simultaneously, a part of power drives auxiliary-motor 50 through transmission device 21 and works in the electrical generator mode, gives electrokinetic cell 39 chargings.

4) cruising state: at this moment, internal combustion engine is at high efficient area, and the horsepower output that vehicle is depended merely on combustion engine 22 travels, and remaining power is used to drive double-motor 29,50 works in the electrical generator mode, gives electrokinetic cell 19 chargings.

5) full throttle acceleration mode: when the state-of-charge of electrokinetic cell 39 greater than SOC _Low, acceleration pedal 35 all depresses, and when vehicle need quicken with all strength, combustion engine 22 and main motor 29 quickened at the synthetic rear drive vehicle of change speed gear box 27 internally-powereds with maximum separately ability output with all strength.When the state-of-charge of electrokinetic cell 39 less than SOC _LowThe time, the small part energy of combustion engine 22 is used to drive auxiliary-motor and gives electrokinetic cell 39 chargings, and other energy drives vehicle quickens, and at this moment, main motor 29 is still worked.

6) braking deceleration state: when vehicle needed braking deceleration, chaufeur was stepped on brake pedal 34, and brake pedal position sensor is notified entire car controller 33 with speed-slackening signal, and which kind of mode the controller judgement takes brake.When the state-of-charge of electrokinetic cell 39 less than SOC _HighThe time, vehicle energy can drive main motor 29 runnings by wheel 47, transmission shaft 26/46, main reduction gear, change speed gear box 27 output shafts, with energy recovery, makes car retardation with generator forms simultaneously.When the state-of-charge of electrokinetic cell 39 greater than SOC _HighThe time, braking energy will not reclaim, and vehicle braked is slowed down and is finished by counter the dragging with conventional car brakeing mode (as ABS) of combustion engine.

7) idle stop state: when vehicle stopped and being in idling mode, entire car controller 33 judged whether vehicle satisfies the idle stop condition, and is satisfied then notify combustion engine ECU 3 to shut down; Otherwise, keep combustion engine 22 tickovers, forward other running conditions of vehicle to up to satisfying the idle stop conditioned disjunction.

Claims (1)

1. double-motor hybrid vehicle power system, comprise combustion engine, motor, power-transfer clutch, change speed gear box, electrokinetic cell, brake system and car load autonomous cruise speed system, it is characterized in that having major and minor two motors, the rotor shaft of its main motor (5) is connected with the output shaft of change speed gear box (4), and the rotor shaft of auxiliary-motor (2) is connected with the bent axle of combustion engine (1); Major and minor motor (5), (2) electrically connect with battery (8).

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