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A method for differential matching of drive motor power for dual drive shafts and dual motors in pure electric vehicles

A pure electric vehicle and matching method technology, applied in the direction of electric vehicles, control drive, electric energy management, etc., can solve the problems of high power, quality and large size, so as to improve utilization efficiency, balance size and quality, and reduce power value Effect

Active Publication Date: 2017-09-19
SHANDONG UNIV OF TECH
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Problems solved by technology

However, most of the motors matched based on this type of technical solution have relatively large power, and their quality and size are correspondingly relatively large.

Method used

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  • A method for differential matching of drive motor power for dual drive shafts and dual motors in pure electric vehicles
  • A method for differential matching of drive motor power for dual drive shafts and dual motors in pure electric vehicles
  • A method for differential matching of drive motor power for dual drive shafts and dual motors in pure electric vehicles

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings.

[0016] figure 1 The structure and control system of the pure electric vehicle with dual drive shafts and dual motors shown includes: vehicle controller, front axle motor controller, front axle motor, rear axle motor controller, rear axle motor, battery management system, power battery, front Final drive, front differential, rear final drive, rear differential, front wheels, rear wheels.

[0017] figure 2 The rated power, external characteristic driving power and its high-efficiency operating area of ​​M1, the rated power of M2, external characteristic driving power and its efficient operating area, and the rated power, external characteristic driving power and its efficient operating area of ​​the dual-motor hybrid drive system are given respectively. .

[0018] 1. The front and rear axles of the vehicle are drive axles, and according to the axle load distribution ...

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Abstract

A method for differential matching of drive motor power for dual drive shafts and dual motors in pure electric vehicles, characterized in that: the rated power of the small motor M1 and the large motor M2 is matched in a segmented manner to form low, medium, and high levels corresponding to the vehicle respectively. The three high-efficiency power levels of M1, M2, and M1+M2 at the cruising speed realize the high-efficiency operation of the motor in the entire cruising speed range; the M1 and M2 external characteristic powers are segmented and differentiated to form corresponding low and medium levels of the vehicle respectively. , M1, M2, and M1+M2 three-stage characteristic power levels with high power requirements can not only ensure the vehicle power requirements, but also improve the utilization efficiency of the drive motor.

Description

technical field [0001] The invention belongs to the technical field of electric vehicle power drive systems, and relates to a power matching between a driving motor of a pure electric vehicle and a complete vehicle, in particular to a type of power differential matching of a driving motor of a pure electric vehicle with dual drive shafts and dual motors. 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, most of the mature pure electric vehicles on the market adopt single-motor single-axis drive technology solutions. For such technical solutions, a lot of research has been carried out at home and abroad on the parameter matching of drive motors and complete vehicles. However, most of the matched motors based on t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L15/20B60L15/32
CPCY02T10/72
Inventor 高松孙宾宾高子超杨坤
Owner SHANDONG UNIV OF TECH
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