CN201195493Y - Power transmission system of hybrid power automobile - Google Patents

Abstract

The utility model relates to a car hybrid power system, in particular to a power transmission system of a hybrid power system, which comprises a vehicle control unit, an engine, an electric motor, a power battery group, a clutch, a gearbox, a main speed reducer, a differential mechanism, car wheels, a throttle valve, an electricity generator, a lower voltage storage battery and a starter, wherein the electric motor is an ISG motor, one end of a rotator of the ISG motor is connected with a crankshaft of the engine, and the other end is connected with a drive disc of the clutch. The utility model utilizes the ISG motor rotator to replace flywheels of the existing engine for direct connection to the engine, further remodels the existing mechanical throttle valve into an electric control throttle valve, and controls the electric control throttle valve by the vehicle control unit, and the starter, the electricity generator and the storage battery system of the existing vehicle are preserved. The system structure enables vehicles to realize the optimal fuel economy and emission of the whole vehicles under various energy flowing modes, and utilizes the starting power supplying system of the original vehicles, thereby guaranteeing stability of the power system.

Description

The power drive system of hybrid vehicle

Technical field

The utility model relates to a kind of automotive power transmission system, specifically a kind of power drive system of hybrid vehicle.

Background technology

Energy-conserving and environment-protective are most important themes of current automotive field, and pure electric vehicle technology, fuel cell technology, hybrid power technology, hydrogen fuel technology and other substitute fuel technology etc. all are to meet the tendency themes of the times and the new-energy automobile technology of giving birth to.Wherein, the hybrid power technology is to have taken into account the best of breed of energy-conserving and environment-protective and industrialization feasibility.The hybrid power system of hybrid vehicle has series, parallel and three kinds of basic versions of series-parallel connection.

Serial type hybrid automobile is a target with the discharging of control car load, its hybrid power system keystone configuration is made up of driving engine, electrical generator, drive motor, energy is converted into electric energy by mechanical energy, be converted into mechanical energy by electric energy again, energy will transform through secondary, thereby the capacity usage ratio of driving engine output is lower than traditional combustion engine automobile.Mainly be suitable for the relatively stricter area of incity, city public transport or discharging.

The parallel type hybrid dynamic automobile is a target with car load oil consumption the best, its hybrid power system is representative with the IMA parallel system of the Insight of Honda company, have simple in structure, the relative series system of capacity usage ratio is than advantages such as height, and because the assistive drive of motor can be selected lower-powered driving engine for use.But emission behavior is relatively poor when moving under the driving engine bad condition.

THS combined hybrid system with the Prius of Toyota Company is the series parallel hybrid power automobile of representative, though its structure has good and economic and emission performance, but because its mechanics complicated layout, control system patented technology content height, electronic control part price height, make that the car load price is higher, be unfavorable for popularizing of home market.In present hybrid vehicle R﹠D process, still be faced with former truck system is changed big, problems such as the cycle is long, cost is high, new system stability difference.

Summary of the invention

The purpose of this utility model be to propose a kind of system architecture change little, system stability height, and have the power drive system of the hybrid vehicle of good fuel economy and anti-emission carburetor.

The purpose of this utility model can be achieved through the following technical solutions:

The power drive system of hybrid vehicle, comprise entire car controller, driving engine, electrical motor, power battery pack, power-transfer clutch, change speed gear box, main reduction gear, diff, wheel, throttle gate, electrical generator, low tension battery and starter, entire car controller links to each other with each cell controller by data bus, starter, electrical generator, throttle gate links to each other with driving engine with low tension battery, power battery pack links to each other with electrical motor, change speed gear box links to each other with power-transfer clutch, main reduction gear links to each other with change speed gear box, diff links to each other with main reduction gear, wheel links to each other with diff, electrical motor is the ISG electrical motor, one end of the rotor of ISG electrical motor links to each other with the bent axle of driving engine, and the other end links to each other with the driving disc spacing pressing of power-transfer clutch.

The purpose of this utility model can also further realize by following technical measures:

The power drive system of aforesaid hybrid vehicle, wherein said throttle gate are electronically controlled throttle valve.

The power drive system of aforesaid hybrid vehicle, wherein said driving engine is an engine petrol.

The power drive system of aforesaid hybrid vehicle, wherein said change speed gear box are mechanical gear box.

The utility model has the advantages that: the utility model replaces the flywheel of former driving engine with the ISG motor rotor, directly links to each other with driving engine, former mechanical throttle gate is adapted as electronically controlled throttle valve, by vehicle control unit controls; The starter of former car, electrical generator, battery system remain unchanged.This system architecture can make automobile flow down at various energy model, realizes the optimal fuel economy and the emission performance of car load, and has adopted the starting electric power system of former car, has guaranteed the stability of power system.The utility model solves in the present hybrid vehicle R﹠D process, to former truck system change big, the cycle is long, cost is high, the problem of new system stability difference, its structure is changed little than the system architecture of traditional combustion engine automobile, the system stability height, and have good fuel economy and anti-emission carburetor.

Description of drawings

Fig. 1 is the structural shape figure of the utility model embodiment one.

The specific embodiment

Embodiment one

The structure of present embodiment as shown in Figure 1, the power drive system of hybrid vehicle mainly comprises: parts such as engine petrol 1, ISG electrical motor 2, power battery pack 3, power-transfer clutch 4, mechanical gear box 5, main reduction gear 6, diff 7, wheel 8, electronically controlled throttle valve 9, electrical generator 10, low tension battery 11, starter 12.Entire car controller links to each other with each cell controller by data bus, can arrange as the case may be, does not just show in the drawings.The starter 12 of former car, electrical generator 10, low tension battery 11 remain unchanged, link to each other with engine petrol 1, power battery pack 3 links to each other with electrical motor, mechanical gear box 5 links to each other with power-transfer clutch 4, main reduction gear 6 links to each other with mechanical gear box 5, diff 7 links to each other with main reduction gear 6, and wheel 8 links to each other with diff 7.ISG electrical motor 2 rotors replace the flywheel of former driving engine, directly link to each other with driving engine 1 bent axle, and the other end of ISG electrical motor 2 rotors links to each other with power-transfer clutch 4 driving disc spacing pressings.Power battery pack 3 links to each other with ISG electrical motor 2, the electric energy that provides required electric energy of direct motor drive or storage motor to produce.Former mechanical throttle gate is adapted as electronically controlled throttle valve 9, by its aperture of vehicle control unit controls.

When the utility model was specifically implemented, control process was as follows:

The starting ready mode: the rotation ignition key, connect low voltage circuit, entire car controller receives also whether check system each several part state is normal for information about, prepares to start.

Originate mode: rotation ignition lock when normally starting, ISG electrical motor 2 starts engine petrol 1.When engine petrol 1 rotating speed was brought to the setting rotating speed, engine petrol 1 was started working and is changed the engine idle pattern over to.If power battery pack 3 power shortages or ISG electrical motor 2 break down can not normal starting the time, press standby start button, then to carry out traditional starter and start, ISG electrical motor 2 only served as the engine flywheel effect and dallied this moment, neither provided also not absorb torque.

The idling pattern: driving engine is by its ECU control operation under this pattern.At this moment, whole-control system control electronically controlled throttle valve 9 apertures are 0; Generally engine petrol 1 stabilization of speed is being set rotating speed.

The idling charge mode: under idling mode, if the SOC of power battery pack 3 is lower than setting value, this moment, hybrid power system changed the idling charge mode over to.If the SOC of power battery pack 3 is higher than setting value, then change the idling pattern again over to.

Engine drive pattern: during vehicle ', if driving engine works independently and can be operated in efficient region, then by the driving engine independent drive.

Combination drive pattern: under the drive pattern, if this moment, driving engine can not provide automobile to drive the demand torque, perhaps engine operation is in the relatively poor zone of efficient, and 2 startings of ISG electrical motor also provide respective torque to regulate engine output torque, guarantee that engine operation is in the more excellent zone of efficient.

The driving charge mode: in the vehicle ' process, if the SOC value of power battery pack 3 be lower than certain setting than low value, then ISG electrical motor 2 is converted to power generation mode from present mode, charge to power battery pack 3, until being higher than this setting value.

Braking mode: in automobile driving process, if brake pedal is operated, then hybrid power system runs on braking mode.In this pattern, spark ignition engine is by self ECU control, and the ISG motor provides braking torque according to the generating capacity under the current state for automobile.

The utility model can also have other embodiment, and the technical scheme that equal replacement of all employings or equivalent transformation form all drops within the scope of the utility model requirement.

Claims (4)

1. The power transmission system of hybrid electric vehicles, including vehicle controllers, engines, electric motors, power battery packs, clutches, gearboxes, final reducers, differentials, wheels, throttles, generators, low-voltage batteries and starters , the vehicle controller is connected to each unit controller through a data bus, the starter, generator, throttle and low-voltage battery are connected to the engine, the power battery pack is connected to the motor, and the gearbox is connected to the clutch , the main reducer is connected to the gearbox, the differential is connected to the final reducer, and the wheels are connected to the differential, characterized in that: the electric motor is an ISG motor, and one end of the rotor of the ISG motor It is connected with the crankshaft of the engine, and the other end is connected with the driving disc of the clutch. 2. The power transmission system of a hybrid electric vehicle according to claim 1, wherein the throttle valve is an electronically controlled throttle valve. 3. The power transmission system of a hybrid electric vehicle according to claim 1, wherein the engine is a gasoline engine. 4. The power transmission system of a hybrid electric vehicle according to claim 1, wherein the gearbox is a mechanical gearbox.

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