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Control method and device for full-power quick and stable switching of range extender

A control method and a technology of a range extender, which are used in transportation and packaging, motor vehicles, hybrid vehicles, etc., can solve the problems of power response time and power response accuracy cannot be balanced, and achieve both response time and response accuracy. The effect of meeting the power following requirements

Active Publication Date: 2021-01-05
宁波洁程汽车科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The problem to be solved by the present invention is to provide a control method and a control device for fast and smooth full-power switching of range extenders for electric vehicles, so as to overcome the inability to balance power response time and power response accuracy in the prior art when power follows power generation. defect

Method used

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  • Control method and device for full-power quick and stable switching of range extender
  • Control method and device for full-power quick and stable switching of range extender
  • Control method and device for full-power quick and stable switching of range extender

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Embodiment 1

[0058] The flow of a control method for fast and smooth full power switching of the range extender in the embodiment of the present invention is as follows figure 2 As shown, the method includes the following steps:

[0059] Step s201, receiving a vehicle target power request signal. In this embodiment, a vehicle target power request signal is received from the vehicle controller.

[0060] In step s202, a first target torque request signal is obtained according to the vehicle target power request signal, and the first target torque request signal is sent to an engine controller, and the engine controller adopts a torque mode to control the operation of the engine.

[0061] At the same time, step s203 is performed, according to the vehicle target power request signal, the second target torque request signal is obtained, and the second target torque request signal is sent to the generator controller, and the generator controller adopts torque mode control The operation of the...

Embodiment 2

[0063] The flow of a method for obtaining a first target torque request signal in an embodiment of the present invention is as follows: image 3 As shown, the method includes the following steps:

[0064] In step s301 , according to the vehicle target power request signal, the range extender high-efficiency zone torque calibration matching calculation is performed to obtain the engine base torque request signal. In this embodiment, the received vehicle target power request signal is first filtered, and then the range extender high-efficiency zone torque calibration matching calculation is performed according to the filtered target power to obtain the engine base torque request signal.

[0065] Step s302, performing open-loop torque correction on the base engine torque request signal to obtain an open-loop torque request signal. In this embodiment, the base torque request signal of the engine is firstly filtered, and then the open-loop torque correction is performed according ...

Embodiment 3

[0071] The flow of a method for obtaining a second target torque request signal in an embodiment of the present invention is as follows: Figure 4 As shown, the method includes the following steps:

[0072] In step s401 , according to the vehicle target power request signal, the range extender high-efficiency zone speed calibration matching calculation is performed to obtain the generator target speed request signal. In this embodiment, the received vehicle target power request signal is first filtered, and then the range extender high-efficiency zone speed calibration matching calculation is performed according to the filtered target power to obtain the generator target speed request signal.

[0073] Step s402 , performing a target speed change rate limiting calculation on the generator target speed request signal to obtain a target speed request signal changing at a calibrated rate. In this embodiment, the generator target speed request signal is firstly filtered, and then ...

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Abstract

The invention discloses a control method for full-power quick and stable switching of a range extender. The method comprises the following steps that: A, a target power request signal of a whole vehicle is received; B, a first target torque request signal is obtained according to the whole vehicle target power request signal, the first target torque request signal is sent to an engine controller,and the engine controller controls operation of an engine in a torque mode; and C, a second target torque request signal is obtained according to the whole vehicle target power request signal, the second target torque request signal is sent to a generator controller, and the generator controller controls operation of a generator in a torque mode. The invention further discloses a control device for full-power quick and stable switching of the range extender. The response time and the response accuracy of power following can be considered at the same time, and the power following requirement for the full-power working condition of the range extender during whole vehicle driving can be met.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a control method and a control device for fast and smooth full-power switching of a range extender for an electric vehicle. Background technique [0002] A range-extended electric vehicle is an electric vehicle that uses other energy sources (such as gasoline) to supply electric energy when the battery power is exhausted. Its main working feature is that it works in pure electric mode in most cases, and works in range-extending mode in a few cases, that is, the range-extender generates electric energy to drive the motor or charge the battery. The range extender is an auxiliary power generation unit of the vehicle power system, which consists of an engine, a starter / generator motor and an intelligent controller. When the battery power of the extended-range electric vehicle is sufficient, the power battery drives the motor to provide the driving power demand of the whole...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W20/10B60W10/06B60W10/08
CPCB60W10/06B60W10/08B60W20/10B60W2710/0666B60W2710/081B60W2710/083Y02T10/62
Inventor 陈长友孙强高强湛勇刚冯瀚
Owner 宁波洁程汽车科技有限公司
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