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Range extender control method and device and range extending type electric automobile

A technology of electric vehicles and range extenders, applied in the field of range extender control methods, devices, and range extender electric vehicles, can solve problems such as poor ride comfort, influence on starting effect and emission effect, and low success rate, so as to reduce emissions and achieve good Start smoothness, optimize the effect of starting effect

Active Publication Date: 2017-01-04
BEIJING ELECTRIC VEHICLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a range extender control method and device and a range extender electric vehicle to solve the problem of low success rate and poor ride comfort caused by environmental factors during the startup process of the range extender in the prior art. The problem that the power generation situation affects the start-up effect and emission effect

Method used

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  • Range extender control method and device and range extending type electric automobile
  • Range extender control method and device and range extending type electric automobile
  • Range extender control method and device and range extending type electric automobile

Examples

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no. 1 example

[0058] The range extender control method of the embodiment of the present invention is applied to a range extender electric vehicle including a range extender, the range extender includes an engine and a generator, and the engine is directly connected to the generator.

[0059] Here, the generator adopts ISG (Integrated Starter Generator, integrated starter / generator).

[0060] like figure 1 As shown, the range extender control method in the embodiment of the present invention includes:

[0061] Step 101 , after judging that the start request of the range extender is valid, obtain a generator target drag torque value according to the current engine temperature, and perform constant torque drag control on the generator according to the generator target drag torque value.

[0062] Here, when the range extender is started, the generator drag torque control refers to the engine temperature to ensure optimal control of the range extender start-up effect in different environments. ...

no. 2 example

[0135] Such as image 3 As shown, the range extender control device according to the embodiment of the present invention is applied to a range extender electric vehicle including a range extender, the range extender includes an engine and a generator, the engine is directly connected to the generator, and the Devices include:

[0136] The constant torque drag control module 301 is used to determine that after the start request of the range extender is valid, obtain the target drag torque value of the generator according to the current engine temperature, and perform constant torque on the generator according to the target drag torque value of the generator. Torque drag control;

[0137] The fuel injection control module 302 is used to obtain the calibration value of the rotational speed that allows fuel injection of the engine according to the current engine temperature and the current atmospheric pressure, and judge whether the actual rotational speed of the generator reache...

no. 3 example

[0163] Such as Figure 4 As shown, the range-extended electric vehicle of the embodiment of the present invention includes: a range extender, a vehicle controller 41 , an engine controller 42 and a generator controller 43 .

[0164] The range extender includes an engine 44 and a generator 45, the engine controller 42 is connected to the engine 44, the generator controller 43 is connected to the generator 45, and the engine 44 is connected to the generator 45 direct connection.

[0165] Here, the generator 45 is an ISG (Integrated Starter Generator, integrated starter / generator).

[0166] The vehicle controller 41 includes a vehicle control unit 411 and a range extender control unit 412 connected to the vehicle control unit 411, and the range extender control unit 412 is connected to the engine controller 42 and the vehicle control unit 412 respectively. The generator controller 43 is connected.

[0167] Among them, the vehicle control unit 411 is used to detect the state in...

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Abstract

The invention provides a range extender control method and device and a range extending type electric automobile and relates to the field of electric automobile control. The problems that an existing range extender is low in starting successful rate and poor in riding comfort, and an electricity generating situation occurs are solved. The range extender control method comprises the steps that the target drag torque value of a generator is obtained according to the current engine temperature, and fixed torque drag control over the generator is conducted; the rotating speed calibration value for allowing oil injection of the engine is obtained according to the current engine temperature and the atmospheric pressure, and when the actual rotating speed of the generator reaches the rotating speed calibration value, the engine is controlled to inject oil; the rotating speed calibration value for allowing torque attenuation of the generator is obtained according to the current engine temperature and the atmospheric pressure, and when the actual rotating speed of the generator reaches the rotating speed calibration value, torque attenuation control is conducted on the generator; and if the actual rotating speed of the generator is larger than the target idle speed of the engine, the target drag torque of the generator is assigned to be zero, and idle speed control is conducted on the engine. According to the range extender control method and device and the range extending type electric automobile, the starting successful rate and the riding comfort of the range extender are improved, and the electricity generating situation is avoided.

Description

technical field [0001] The invention relates to the field of electric vehicle control, in particular to a range extender control method and device and a range extender electric vehicle. Background technique [0002] At present, during the start-up process of the range extender of the range-extended electric vehicle, the influence of environmental factors on the success rate and smoothness of the start-up of the range extender has not been considered, nor has the engine been suppressed by the generator during the start-up process, resulting in external power generation. The condition will affect the engine starting effect and emission effect. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a range extender control method and device and a range extender electric vehicle to solve the problem of low success rate and poor ride comfort caused by environmental factors during the startup process of the range extender in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L11/12B60W20/15B60W20/16B60L50/15
CPCB60L50/61Y02T10/62Y02T10/70Y02T10/7072
Inventor 崔天祥易迪华王金龙金硕周金龙
Owner BEIJING ELECTRIC VEHICLE
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