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Control method of range extender system

A control method and the technology of the range extender, which are applied in the control field of the range extender system, can solve problems such as torsional vibration and abnormal noise of the transmission mechanism, frequent start and stop of the range extender, and increased fuel consumption of the vehicle, and achieve the goal of reducing the number of starts and stops Effect

Active Publication Date: 2021-06-18
奇瑞新能源汽车股份有限公司
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AI Technical Summary

Problems solved by technology

This control method is prone to the problems of speed fluctuation at the end of the stop of the range extender and abnormal noise of the transmission mechanism, and this shutdown control method will cause the range extender to frequently start and stop during the application process of the whole vehicle, which will increase the speed of the entire vehicle. fuel consumption

Method used

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  • Control method of range extender system
  • Control method of range extender system
  • Control method of range extender system

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Embodiment Construction

[0040] Below with reference to the accompanying drawings, through the description of the implementation examples, the specific embodiments of the present invention, such as the shape, structure, mutual position and connection relationship between each part, the role and working principle of each part, etc., will be further described. detailed instructions.

[0041] Such as image 3 , the range extender system of the present invention is composed of the vehicle controller VCU, the range extender controller ACM, the generator controller GCU connected with the generator, and the engine controller ECU connected with the engine, wherein the range extender system The working principle of each part is: the vehicle controller VCU detects the driver and the vehicle demand command, and distributes the power request to the range extender controller ACM; the range extender controller ACM controls the power generation according to the power request sent by the vehicle controller VCU The w...

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Abstract

The invention provides a control method of a range extender system. The control method can optimize the starting mode of the range extender system. According to the control method, on one hand, the impact load of a transmission mechanism in a motor starting process is reduced by reducing continuous starting torque; on the other hand, by reducing the rotating speed of a range extender to reach angular acceleration in the case of a generator starting target rotating speed n1 and an engine target rotating speed n2 and reducing the speed difference between the generator starting target rotating speed n1 and the engine target rotating speed n2, an uprush rotating speed after the engine reaches the target rotating speed is reduced, and then the purpose of smooth starting is achieved.

Description

technical field [0001] The invention relates to the technical field of range-extender electric vehicles, in particular to a control method for a range-extender system. Background technique [0002] The ideal state of the range extender system in the application of the vehicle is constant power operation, low fuel consumption and meeting the power requirements of the vehicle. In the actual application process, in order to balance the power and economy of the vehicle, multiple operating points and power follow are extended. The start-stop method of the range extender is particularly important in the process of strategy formulation. [0003] 1. In the prior art, the starting method adopted by the range extender system is mainly the motor drives the engine to start at high speed to improve the emission problem of the range extender system. However, the way of high-speed starting will make it more difficult for the range extender to reach the target speed and perform steady-stat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W10/06B60W10/08B60W10/30B60W30/18B60W40/00
CPCB60W10/06B60W10/08B60W10/30B60W30/18B60W40/00
Inventor 卞振国王金桥王经常承忠平王金龙王锁符定实刘广成童凯律
Owner 奇瑞新能源汽车股份有限公司
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