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ISG dragging torque control method and device of plug-in hybrid electric vehicle, and unit

A hybrid electric vehicle, torque control technology, applied in the direction of hybrid electric vehicle, engine start, engine electric motor start, etc., can solve the problems of reduced service life of automobile power battery and failure to provide

Active Publication Date: 2021-06-22
GUANGZHOU AUTOMOBILE GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide an ISG drag torque control method, device, and unit for a plug-in hybrid electric vehicle, aiming to solve the problem that the vehicle power battery The problem of reduced service life

Method used

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  • ISG dragging torque control method and device of plug-in hybrid electric vehicle, and unit
  • ISG dragging torque control method and device of plug-in hybrid electric vehicle, and unit
  • ISG dragging torque control method and device of plug-in hybrid electric vehicle, and unit

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Embodiment 1

[0050] figure 1 The implementation flow of the ISG drag torque control method of the plug-in hybrid vehicle provided in the embodiment of the present invention is shown. For convenience of explanation, only the part related to the embodiment of the present invention is shown, and detailed is as follows:

[0051] In step S101, when the instructions of the engine are received, the power battery will be charged and discharged according to the temperature and power of the power battery in the plug-in hybrid vehicle.

[0052] The embodiment of the present invention is suitable for hybrid vehicles, specifically, suitable for oil-electric hybrid vehicles, which use fuel (gasoline, diesel) and electrical energy as a power source. When the charge and discharge capacity of the power battery is obtained, it is preferred that when the battery power of the power battery is greater than the preset charging capability determines the charging threshold voltage corresponding to the power cell tem...

Embodiment 2

[0067] Figure 4 The structure of the ISG drag torque control device according to the first embodiment of the present invention is shown. For convenience of explanation, only the part related to the embodiment of the present invention is shown, including:

[0068] The battery capacity acquisition unit 41 is used to obtain the charge and discharge of the power battery according to the temperature and power of the power battery in the plug-in hybrid vehicle at the instruction to activate the insertion type hybrid vehicle;

[0069] The mode determination unit 42 is used to determine the starting mode of the engine according to the water temperature of the charge and discharge capacity and the engine;

[0070] The drag parameter setting unit 43 is used to determine the drag time of ISG to drag the ISG in the plug-in hybrid vehicle according to the determined starting mode and the engine of the engine and set the target drag rotation speed;

[0071] The torque control unit 44 is config...

Embodiment 3

[0086] Figure 6 The structure of the automotive electronic control unit provided in the first embodiment of the present invention is shown, and only the portion related to the embodiment of the present invention is shown in order to facilitate explanation.

[0087] The automotive electronic control unit 6 of the embodiment of the present invention includes a processor 60, a memory 61, and a computer program 62 stored in memory 61 and can operate on processor 60. When the processor 60 performs computer program 62, the step of implementing the above ISG drag torque control method embodiment, for example figure 1 The steps S101 to S104 shown are shown. Alternatively, the function of which the units in each of the various units in the embodiment described above is realized when the processor 60 is executed. Figure 4 The functions shown in units 41 to 44 are shown.

[0088] When an embodiment of the present invention receives an instruction of the engine in the initial plug-in hybrid ...

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Abstract

The invention is suitable for the technical field of automobile control, and provides an ISG dragging torque control method and device of a plug-in hybrid electric vehicle, and a unit. The method comprises the steps that when an instruction for starting an engine in the plug-in hybrid electric vehicle is received, according to the temperature and the electric quantity of a power battery in the plug-in hybrid electric vehicle, the charging and discharging capacity of the power battery is obtained; a starting mode of the engine is determined according to the charging and discharging capacity and the water temperature of the engine; according to the determined starting mode and the water temperature of the engine, the dragging time for dragging the engine through an ISG in the plug-in hybrid electric vehicle is determined, and a target dragging rotating speed is set; according to the dragging time, the target dragging rotating speed, a proportional-integral controller in the plug-in hybrid electric vehicle and the current actual torque of the engine, the output torque of the ISG is controlled, and therefore different starting modes are set according to the state of the plug-in hybrid electric vehicle, and the engine is rapidly and effectively started while the power battery is protected.

Description

Technical field [0001] The invention belongs to the field of automobile control technology, and more particularly to an ISG drag torque control method, apparatus and unit of plug-in hybrid vehicle. Background technique [0002] With the increasing popularity of new energy vehicles, hybrid vehicles have become the research and development focus of new energy automobile production enterprises with strong endurance and low fuel consumption. Hybrid Vehicle engine starts directly affecting vehicle operation quality, fuel consumption, emissions, and comfort, is one of the key technologies for new energy vehicles. [0003] In the current new energy hybrid model, the following types of motors are used to start the engine: (1) Hybrid power start mode, determine the fuel injection speed, ISG (start / power generation electric machine) according to the engine water temperature and power supply component voltage Control drag the engine to the injecting speed, the engine starts after the star...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02N11/08F02N11/04
CPCF02N11/08F02N11/0862F02N11/04F02N2200/064F02N2200/06F02N2200/02F02N2300/104F02N2200/022F02N2300/2002Y02T10/62
Inventor 罗经纬王金航陈立华杨黎健刘涛
Owner GUANGZHOU AUTOMOBILE GROUP CO LTD