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Motor torsional-moment outputting management with SOC variation for mixed-dynamical vehicle

A hybrid electric vehicle and motor torque technology, which is applied to the layout of multiple different prime movers of hybrid electric vehicles, electric vehicles, and general-purpose power plants, etc., can solve the problem of affecting the driving performance of the whole vehicle, reducing the total torque output of the hybrid power system, etc. problem, to achieve the effect of good practical performance and driving feeling

Inactive Publication Date: 2007-01-17
FAW GROUP
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AI Technical Summary

Problems solved by technology

Therefore, when the motor and the engine are running in parallel, when the battery SOC drops to this limit, the motor will suddenly stop torque output, and the total torque output of the hybrid system will drop significantly instantaneously, affecting the driving performance of the vehicle.

Method used

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  • Motor torsional-moment outputting management with SOC variation for mixed-dynamical vehicle
  • Motor torsional-moment outputting management with SOC variation for mixed-dynamical vehicle

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Embodiment Construction

[0012] Below in conjunction with accompanying drawing, the present invention will be further described, as figure 1 As shown, the main motor 5 is arranged at the rear end of the transmission 4 (AMT form, the transmission is integrated with the final reducer and the differential), and the rotor shaft of the motor is directly connected with the output shaft of the transmission; the auxiliary motor 2 is arranged on one side of the engine 1, It is connected to the front end of the engine crankshaft through a belt. The main / auxiliary motor controller 30 / 32, the engine control unit 14, the controller 17 of the automatic shifting mechanical transmission AMT, the vehicle controller 21, and the battery management unit 24 in the structure are the energy management and automatic control units of the hybrid power system. Electronic devices are needed, and they are connected by a network (such as CAB-bus); the transmission control switch 18, the ignition switch 20, the brake pedal positio...

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Abstract

The invention is implemented using a control system composed of an entire car controller, a motor and its controller, and a battery and its management unit. It features following points: the maximum output torque of motor continuously and smoothly varies between 0 and maximum designing value along with rotate speed and SOC such that in the process of car running the dropping down of driving power can never be happened and the SOC can not drop to the extreme case.

Description

technical field [0001] The invention relates to a control method for a power system of a hybrid electric vehicle, in particular to a management method for changing the torque output of a motor of a hybrid electric vehicle according to SOC. Background technique [0002] With the increasingly prominent global environmental and energy issues, the development of new vehicles with low emissions and low fuel consumption has become the primary task of the development of the automotive industry today. Hybrid electric vehicle technology avoids the shortage of battery technology and energy infrastructure of pure electric vehicles. It is a good solution to current problems and has become a hot spot in international automotive research and development. [0003] The control method that the motor torque output of the hybrid electric vehicle varies according to the SOC (that is, the state of charge) directly affects the actual performance and driving feeling of the vehicle. Currently, in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P7/00B60L15/00B60K6/04B60W20/00B60K6/20B60W20/13
CPCY02T10/645Y02T10/64
Inventor 唐志强江国华朱彦文市川耕司吉見秀和松下昌弘龍見哲治伊藤伸一大屋勝則荒川誠
Owner FAW GROUP
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