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A control method for a power system of an electric vehicle with dual motors and dual drive shafts

A control method and power system technology, applied in the direction of electric vehicles, control drive, electric energy management, etc., can solve the problems of limiting the overall performance improvement space of the whole vehicle

Inactive Publication Date: 2017-05-03
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the power control algorithm of purely front-wheel drive or rear-wheel drive cannot perform real-time adjustment of two-wheel drive, four-wheel drive, two-wheel brake, and four-wheel brake working modes according to the vehicle's operating conditions, which limits the overall performance of the vehicle. room for further improvement;

Method used

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  • A control method for a power system of an electric vehicle with dual motors and dual drive shafts
  • A control method for a power system of an electric vehicle with dual motors and dual drive shafts
  • A control method for a power system of an electric vehicle with dual motors and dual drive shafts

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Embodiment Construction

[0021] Below in conjunction with accompanying drawing, the present invention will be further described:

[0022] figure 1 The vehicle control system structure of a pure electric vehicle with dual motors and dual drive shafts includes: a vehicle controller, a power control system, a battery management system, a power battery, a front final drive, a front differential, a rear final drive, a rear Differential, front and rear wheels. Among them, the vehicle controller includes a driver intention recognition module and a vehicle operating condition judgment module, and the power control system includes a front axle motor controller, a rear axle motor controller, a front axle motor, and a rear axle motor;

[0023] figure 2 The vehicle power control process of a pure electric vehicle with dual motors and dual drive shafts includes: a driver intention recognition module, a vehicle operating condition judgment module, and a power control system. Identify the driver's intention and ...

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Abstract

A control method for a power system of an electric vehicle with dual motors and dual drive shafts: it is characterized in that a reasonable motor working mode can be selected according to the operating conditions of the vehicle, so as to meet the optimal output of the motor power under different power requirements of the vehicle. According to the starting conditions of the vehicle, it can realize the stable start of the single-axle and two-wheels and the rapid start of the two-axle and four-wheels to ensure the power requirements when the vehicle starts; according to the cruising conditions of the vehicle, it can realize the single-axle front-wheel drive, Rear-wheel drive or dual-axle four-wheel drive realizes the efficient operation of the motor system; according to the braking conditions of the vehicle, it can realize single-motor regenerative braking under small braking intensity, increase the braking load rate of the motor, and realize The dual-motor four-wheel regenerative braking under medium and high braking intensity improves the recovery rate of regenerative braking energy; according to the lame condition of the vehicle, it can select a reasonable motor working mode to continue driving the vehicle forward.

Description

technical field [0001] The invention belongs to the field of electric vehicle power control, and relates to a control method for a pure electric vehicle power system, in particular to a control method for a pure electric vehicle power system with dual motors and double drive shafts. Background technique [0002] In recent years, facing the dual pressure of energy crisis and environmental pollution, the world's automobile industry is facing strategic transformation, and pure electric vehicles have become one of the strategic development directions of my country's automobile industry. At present, pure electric vehicles are in the initial stage of industrialization, and single-motor single-axis drive structure schemes are more common. Based on such technical solutions, a lot of research has been carried out on the control method of the vehicle power system at home and abroad, and there are relatively mature single-axis drive pure electric vehicle products on the market. Howeve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L15/00B60L15/20
CPCY02T10/72
Inventor 高松孙宾宾高子超杨坤
Owner SHANDONG UNIV OF TECH
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