Torque distributing and controlling method based on efficiency optimization for double motors in hybrid power system

A technology of hybrid power system and torque distribution, which is applied in hybrid vehicles, control drives, motor vehicles, etc.

Active Publication Date: 2014-11-05
SAIC MOTOR
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In the prior art, for a hybrid electric vehicle system that uses an engine and dual motors (including TM motors and ISG motors) to form a hybrid

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  • Torque distributing and controlling method based on efficiency optimization for double motors in hybrid power system
  • Torque distributing and controlling method based on efficiency optimization for double motors in hybrid power system
  • Torque distributing and controlling method based on efficiency optimization for double motors in hybrid power system

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Embodiment Construction

[0039] It should be noted that the principles, characteristics and advantages of the dual-motor torque distribution control method in the hybrid power system based on efficiency optimization of the present invention will be specifically described below by way of example, but all descriptions are only for illustration, and They should not be construed as forming any limitations on the present invention. In addition, any single technical feature described or implied in each embodiment mentioned herein, or any single technical feature shown or implied in each drawing, can still be included in these technical features (or their equivalents) Objects) continue to make any combination or deletion, so as to obtain more other embodiments of the present invention that may not be directly mentioned herein.

[0040] In order to facilitate a better understanding of the method of the present invention, the following explanations and illustrations are required. Firstly, to implement the tec...

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Abstract

The invention relates to a torque distributing and controlling method based on efficiency optimization for double motors in a hybrid power system. The hybrid power system supports the double motors (namely a TM motor and an ISG motor) to simultaneously carry out driving work and electricity generating work. The method comprises the steps: providing an all-condition efficiency graph about the driving and the electricity generating of the TM motor and the ISG motor under the all working condition; calculating the optimized distribution of the driving torque and the optimized distribution of the electricity generating torque between the double motors; associating each of Rate_Mot and Rate_Gen, which are obtained under the condition of different rotating speeds, with the rotating speed and the torque T distributed into the TM motor and the ISG motor to obtain an off-line computation table; and distributing the torque between the double motors. Through the adoption of the method disclosed by the invention, the torque can be reasonably and efficiently distributed between the double motors, the respective performance advantage can be fully taken, the work efficiency of the system is obviously improved, the energy consumption cost of a vehicle is reduced, and therefore, the goals of energy conservation and environmental protection can be realized.

Description

technical field [0001] The invention belongs to the technical field of hybrid electric vehicle control, and in particular relates to a dual-motor torque distribution control method based on efficiency optimization in a hybrid power system composed of an engine and a dual-motor (including a TM motor and an ISG motor) as a power source. Background technique [0002] In the prior art, for a hybrid electric vehicle system that uses an engine and dual motors (including TM motors and ISG motors) to form a hybrid power source, there are no patent documents, etc. that involve how to connect the dual motors in the hybrid system. For torque distribution and control. Therefore, it is necessary to provide corresponding control methods to distribute torque reasonably and efficiently between TM motors and ISG motors, so as to give full play to their respective performance advantages, prolong their service life, save vehicle energy consumption as much as possible, and improve the overall s...

Claims

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Application Information

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IPC IPC(8): B60W20/00B60L15/20B60W20/10
CPCB60L15/20B60W10/08B60W20/10B60W2710/083Y02T10/72
Inventor 朱军邓晓光张霏霏张鹏君孙俊
Owner SAIC MOTOR
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