Matching method for battery electric vehicle power system

Abstract

The invention discloses a matching method for a battery electric vehicle power system. The matching method comprises the following steps: performing initial matching on the selecting parameters of all components of a power system, thereby confirming a matching value of the selecting parameters of all the components; inputting the matching value in an established simulating calculation model, thereby acquiring a simulating calculating value of each performance parameter; if the performance parameter with the simulating calculating value which does not meet the corresponding performance index demand exists, adjusting the corresponding matching value till meeting the demand; acquiring each matching value causing the simulating calculating value to meet the corresponding performance index demand and taking the matching value as a to-be-verified matching value; verifying the to-be-verified matching value on a power system rack, thereby acquiring a verifying value of each performance parameter; if the performance parameter with the verifying value does not meet the corresponding performance index demand exists, adjusting the corresponding to-be-verified matching value till meeting the demand. The matching method has the advantages of shortening the developing period and reducing the development cost.

Description

technical field [0001] The invention relates to the design field of a pure electric vehicle, in particular to a matching method for a power system of a pure electric vehicle. Background technique [0002] Although pure electric vehicles have the advantages of clean and pollution-free, high energy conversion efficiency, and simple structure, the popularization and development of pure electric vehicles are restricted due to the problem of short driving range. Therefore, it is of great significance to reasonably design and match the power system of pure electric vehicles to improve transmission efficiency and increase its driving range. [0003] The design of the pure electric vehicle power system involves many influencing factors. The existing matching method of the pure electric vehicle power system includes the following steps: [0004] Step 1: Determine the performance index of each performance parameter of the pure electric vehicle power system according to the developmen...

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Problems solved by technology

[0007] The purpose of the embodiments of the present invention is to solve the problem of relatively large errors in the matching results of existing matching methods for pure electric vehicle power systems, and to provide a method that can save development cycle and development costs, and can also realize the matching of power systems. The matching method of pure electric vehicle power system for optimized design

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