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Serial-to-parallel control method of electrical-electric connecting type hybrid power system

A technology of a hybrid power system and a control method, which is applied in the field of series-to-parallel control of a gas-electric hybrid hybrid power system, can solve the problems of slow mode conversion and power interruption, etc.

Active Publication Date: 2015-04-29
ZHENGZHOU YUTONG BUS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a series-to-parallel control method for a gas-electric hybrid hybrid power system to solve the problems of slow mode conversion and power interruption after mode conversion in existing control methods

Method used

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  • Serial-to-parallel control method of electrical-electric connecting type hybrid power system
  • Serial-to-parallel control method of electrical-electric connecting type hybrid power system

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Embodiment Construction

[0019] The present invention will be further introduced below in conjunction with the accompanying drawings and specific embodiments.

[0020] Such as figure 2 As shown, the gas-electric hybrid hybrid power system series-to-parallel control method of the present invention includes the following steps:

[0021] (1) When the vehicle meets the conditions for entering parallel connection, judge whether the engine has started. If the engine has started, the ISG adopts speed control at this time, following the speed of the main motor. The engine control is throttle control, and an appropriate throttle value is given. ; If not completed, the ISG motor adopts speed control, and the target speed is the main motor speed;

[0022] (2) When the engine speed reaches the set speed n1, control the solenoid valve to supply air to the engine;

[0023] (3) When the engine speed reaches the set speed n2, the engine is ignited;

[0024] (4) When the engine speed reaches the set speed n3, the ...

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Abstract

The invention discloses a serial-to-parallel control method of an electrical-electric connecting type hybrid power system. The method is that when a vehicle meets the condition of entering parallel connection and an engine is failed to be started, ISG (Integrated Starter Generator) is subjected to rotating speed control, namely, the target rotating speed is the rotating speed of a main motor; the engine supplies air when reaching the set rotating speed n1, and is ignited when reaching the set rotating speed n2; when starting successfully, the ISG remains the rotating speed control; on the basis of the rotating speed of the main motor, the engine control is replaced by accelerator control, and a proper accelerator value is provided; when the rotating speed difference between the engine and the main motor is less than the set rotating speed difference value, a clutch is connected, and the vehicle enters the parallel connection mode. The method has the outstanding characteristics that the ISG is subjected to rotating speed control under a serial-to-parallel mode; the engine is subjected to accelerator control and the proper accelerator value is provided on the basis of the rotating speed of the main motor, so that the speed regulating can be responded fast; in addition, the response of the engine in the parallel connection mode is faster than that of the mode that the engine control is performed and the accelerator value is 0 during speed adjustment; the hybrid power system is free of power cut-off after the clutch is connected.

Description

technical field [0001] The invention relates to a control method for serial conversion of a gas-electric hybrid hybrid power system. Background technique [0002] Such as figure 1 Shown is an existing gas-electric hybrid system. It can be seen from the figure that the system includes a coaxially arranged engine 1, an ISG motor 3 and a main motor 5, wherein the ISG motor 3 and the output shaft of the engine pass through a torsional shock absorber. 2 is connected by transmission, while the ISG motor 3 and the main motor 5 are connected by transmission through the clutch 4, and the main motor is directly connected to the drive axle to drive the whole vehicle. According to the working state of the clutch 4, the system can be divided into series mode and parallel mode. The series mode means that the clutch is in a disengaged state, and the main motor is the only driving component; the parallel mode means that the clutch is engaged, and the engine or the main motor is the driving...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W10/06B60W10/08B60W20/00B60W20/20
CPCB60W10/06B60W10/08B60W20/20B60W2510/0638B60W2540/06B60W2710/0605B60W2710/0616B60W2710/081Y02T10/62
Inventor 岳淑彪陈慧勇苏常军杨学青许盛中李涛
Owner ZHENGZHOU YUTONG BUS CO LTD
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