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An energy efficiency optimization method for full hybrid vehicles based on sequential selection genetic algorithm

A genetic algorithm and hybrid vehicle technology, applied in the field of energy efficiency optimization of full hybrid vehicles based on sequential selection genetic algorithm, can solve problems such as poor advancement of vehicle models and difficult global optimal solutions for optimization models

Active Publication Date: 2021-04-06
CHANGSHU INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main problem of this patent is that the vehicle model is not advanced enough. The current mainstream hybrid products in the market are mainly three-motor full hybrid systems. At the same time, the optimization model based on the search algorithm is difficult to guarantee the global optimal solution.

Method used

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  • An energy efficiency optimization method for full hybrid vehicles based on sequential selection genetic algorithm
  • An energy efficiency optimization method for full hybrid vehicles based on sequential selection genetic algorithm
  • An energy efficiency optimization method for full hybrid vehicles based on sequential selection genetic algorithm

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Embodiment Construction

[0058] The present invention will be further described below in conjunction with the examples, but not as a limitation of the present invention.

[0059] The energy efficiency optimization method of a full hybrid vehicle based on sequential selection genetic algorithm involved in the present invention is realized based on a four-wheel drive plug-in full hybrid system; please combine figure 1 As shown, the four-wheel drive plug-in full hybrid system includes: engine 1, first clutch 13, integrated starter motor 2, second clutch 12, automatic transmission control unit TCU (Transmission Control Unit) 5, front drive motor 3. Rear drive motor 9, front drive motor transmission 4, front drive motor inverter system 8, rear drive motor transmission 10, rear drive motor inverter system 11, integrated starter motor inverter system 14, on-board charger 6. Power battery 7 and DCDC converter.

[0060] The output end of the engine 1 is mechanically connected to the input end of the first clu...

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Abstract

The invention discloses a method for optimizing the energy efficiency of a full hybrid vehicle based on a sequential selection genetic algorithm, which works in a four-wheel drive plug-in full hybrid power system. power mode, pure electric mode or front-drive hybrid mode; in the full-drive hybrid mode and pure electric mode, the sequential selection genetic algorithm is used to optimize the torque of the front-drive motor, the integrated starter motor and the rear-drive motor, and the torque of each motor The torque distribution coefficient defines the torque of each motor. The present invention can efficiently and quickly obtain the optimal solution of the three motor torques of the full hybrid vehicle in the global range, and then control the corresponding motor torques to optimize the energy efficiency of the vehicle, which is about 10% higher than that of the prior art.

Description

technical field [0001] The invention relates to a method for optimizing the energy efficiency of a hybrid vehicle, in particular to a method for optimizing the energy efficiency of a full hybrid vehicle based on a sequential selection genetic algorithm. Background technique [0002] A hybrid vehicle refers to a vehicle that is driven by two power sources. According to the requirements of the vehicle's operating conditions, the proportion of the two power sources participating in the drive is adjusted in a timely manner to achieve the effect of saving energy and reducing emissions. [0003] The operating conditions of a hybrid electric vehicle include a start-up acceleration phase, a normal driving phase, and a braking deceleration phase. In the starting stage, because the motor has the characteristics of low speed and high torque, first start the motor to work, and when the vehicle speed reaches the cruising speed, then start the engine to drive the vehicle; if the vehicle n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W10/06B60W10/08B60W10/26B60W20/00B60W30/182B60W40/00G06N3/12
CPCB60W10/06B60W10/08B60W10/26B60W20/00B60W30/182B60W40/00G06N3/126Y02T10/62Y02T10/84
Inventor 张盛龙王佳林玲冯是全
Owner CHANGSHU INSTITUTE OF TECHNOLOGY