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A control method for engine warm-up of an extended-range electric vehicle

A control method and engine technology are applied in the field of engine warm-up control of extended-range electric vehicles, which can solve the problems of insufficient driving range and power battery energy density defect, and achieve the effect of extending driving range and low emission

Active Publication Date: 2016-05-11
奇瑞新能源汽车股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the defect of the energy density of the power battery of the traditional pure electric vehicle, the insufficient driving range has become an obstacle to its popularization

Method used

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  • A control method for engine warm-up of an extended-range electric vehicle
  • A control method for engine warm-up of an extended-range electric vehicle
  • A control method for engine warm-up of an extended-range electric vehicle

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Experimental program
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Effect test

Embodiment 1

[0020] like figure 1 As shown, the principle of the range-extending system 1 of the extended-range electric vehicle mentioned in this embodiment is as follows: the vehicle controller 12 is connected to the mode switch 14, and the driver can select the manual mode or the automatic mode through the mode switch 14 to start Extender unit. The vehicle controller 12 controls the operation of the driving motor 10 through the motor controller 11, controls the operation of the generator 3 through the generator controller 5, controls the operation of the engine 2 through the engine controller 4, and controls the operation of the engine 2 through the battery management unit 7. Control the work of the power battery 6; the power battery 6 is connected with the low-voltage small battery pack 9 through the DC-DC converter 7, so as to provide electric energy for the starter 13. When starting, the starter 13 and the generator 3 can drive the engine 2, and the engine controller 4 controls the ...

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Abstract

The invention provides an extended-range electric vehicle engine heating control method. The purpose of high-efficiency and low-emission driving range lengthening is achieved. A whole vehicle controller controls an engine heating process according to the water temperature of an engine and the SOC value of a power battery. After the whole vehicle controller receives a starting command of an extended-range unit, the water temperature of the engine is detected first, if the water temperature of the engine is lower than preset idling engine heating temperature, the whole vehicle controller sets the time of idling engine heating of the engine according to the water temperature of the engine and the SOC value of the power battery and controls the engine to carry out idling engine heating, otherwise, engine heating is finished, after idling engine heating of the engine is finished, the whole vehicle controller judges whether quick engine heating is needed according to the water temperature of the engine or the SOC value of the power battery, if the water temperature of the engine is lower than the preset quick engine heating temperature or the SOC value of the power battery is smaller than a preset value, the whole vehicle controller sets engine rotating speed and generator load torque and controls the engine to carry out quick engine heating, and otherwise, engine heating is finished.

Description

technical field [0001] The invention belongs to the technical field of range-extended electric vehicle control, and in particular relates to a control method for engine warm-up of an extended-range electric vehicle. Background technique [0002] With the advancement of science and technology and the enhancement of people's awareness of environmental protection, the "low-carbon, environmental protection, green" travel mode has gradually attracted people's attention. Therefore, the research on high-efficiency, environment-friendly and energy-saving electric vehicles has aroused great concern from various automobile manufacturers in the world. Due to the defect in the energy density of the power battery of the traditional pure electric vehicle, the insufficient driving range has become an obstacle to its popularization. The range-extending electric vehicle adds a range-extending unit consisting of an engine and a generator to the traditional electric vehicle, which effectively...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W30/192
Inventor 肖小城王春丽
Owner 奇瑞新能源汽车股份有限公司
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