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Matching method for pure electric vehicle power system

A technology of power system and matching method, which is applied in the directions of aerodynamic improvement, electrical digital data processing, special data processing application, etc. The effect of improving power system efficiency and increasing driving range

Active Publication Date: 2012-11-28
奇瑞新能源汽车股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the driving range of electric vehicles has restricted its popularization and development

Method used

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  • Matching method for pure electric vehicle power system
  • Matching method for pure electric vehicle power system

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Embodiment Construction

[0028] The present invention will be described in detail below according to the accompanying drawings, which is a preferred embodiment among various implementations of the present invention.

[0029] 1. Dynamic index confirmation:

[0030] The electric vehicle developed by the present invention is a front-drive and an externally connected 220V plug-in pure electric vehicle which is refitted on the basis of a fuel miniature vehicle. On the basis of retaining the original vehicle system, lithium-ion batteries and permanent magnet synchronous motors are used to drive the vehicle. Determine the performance index of the vehicle according to the basic parameters of the vehicle.

[0031] 2. Drive motor parameter matching:

[0032] The electric vehicle designed by the present invention adopts the permanent magnet synchronous motor as the only power drive device, and the motor is required to provide high instantaneous torque in the constant torque region and high operating speed in t...

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Abstract

The invention relates to a matching method for a pure electric vehicle power system, which comprises the following steps: (1) determining parameters for each component of a finished vehicle; (2) establishing a simulative computation model for the finished vehicle; (3) inputting the parameters into the model for simulative computation; and (4) making performance simulative analyses for a plurality of times so as to improve and optimize the parameters. Through the method, parameters for the power system fully satisfying performance indexes can be obtained via repeated computation and optimization, so that the method is significant for the saving of the development period and cost.

Description

technical field [0001] The invention relates to a matching method of a pure electric vehicle power system. Background technique [0002] Electric vehicles have become a hot spot in contemporary automotive research because of their advantages such as clean and pollution-free, high energy conversion efficiency, simple structure, and convenient use and maintenance. However, the driving range of electric vehicles restricts its popularization and development. Therefore, reasonable design and matching of the power system parameters of electric vehicles, so as to improve the transmission efficiency and increase its driving range, has become one of the hotspots in the development and research of the domestic and foreign automobile industry. [0003] The design of electric vehicle power system involves many influencing factors. In the process of electric vehicle design, how to optimize the power system parameters to achieve performance optimization, save development cycle and cost h...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCY02T10/82
Inventor 张国华
Owner 奇瑞新能源汽车股份有限公司
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