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Control method and device for starting engine of extended-range electric vehicle

A technology for engine starting and electric vehicles, applied in electric vehicles, motor vehicles, transportation and packaging, etc., can solve problems such as insufficient power, power consumption of power batteries, and inability to provide driving experience for users, so as to ensure power driving experience and good power The effect of driving experience

Active Publication Date: 2021-02-05
睿驰电装(大连)电动系统有限公司
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  • Abstract
  • Description
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Problems solved by technology

[0003] However, the inventors found that controlling the power of the power battery required to start the engine may cause the vehicle to be underpowered in some applications, thus failing to provide users with a good driving experience.

Method used

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  • Control method and device for starting engine of extended-range electric vehicle
  • Control method and device for starting engine of extended-range electric vehicle
  • Control method and device for starting engine of extended-range electric vehicle

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Embodiment Construction

[0034] In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of them. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] In the current extended-range electric vehicle, the engine is connected to the generator, the generator is connected to the power battery, and the power battery is connected to the drive motor. The energy flow relationship is as follows figure 1 shown. If the power battery SOC is lower than the preset charge level X, the generator connected to the engine at this time is used as a ...

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Abstract

The invention provides a control method and device for starting an engine of an extended-range electric vehicle, relates to the technical field of extended-range electric vehicles, and is applied to awhole vehicle control unit.When the residual charge state of the power battery is lower than a preset charge level, and under the condition that the difference value between the current maximum discharge power of the power battery and the required power of the driving motor is larger than the required power of the starter, the engine is controlled to be started, and by controlling the starting time of the engine of the extended-range electric vehicle, it is guaranteed that the vehicle has good power driving experience in various application scenes.

Description

technical field [0001] The present invention relates to the technical field of extended-range electric vehicles, in particular to a control method and device for starting an engine of an extended-range electric vehicle. Background technique [0002] In the application process of today's extended-range electric vehicles, in order to ensure the availability of the remaining charge (State of Charge, SOC) in the power battery, which can also be called the remaining battery power, it is maintained within a certain preset range. When the power battery SOC is low At the preset charge level X, the engine is controlled to start, so that the engine drives the generator to charge the power battery to ensure that the SOC of the power battery is not lower than the preset charge level X. [0003] However, the inventors found that the power of the power battery required to control the starting of the engine may cause insufficient power for the vehicle in some application occasions, thereby...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L50/62
CPCB60L50/62Y02T10/62Y02T10/70
Inventor 姜明亮郑玥
Owner 睿驰电装(大连)电动系统有限公司
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