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Hydrogen fuel cell electric vehicle motor system matching method

A technology of electric vehicles and fuel cells, which is applied in the field of hydrogen fuel cell electric vehicle motor system matching, can solve the problems of power performance and fuel economy, and the service life of parts does not meet the requirements of marketization.

Pending Publication Date: 2019-11-15
WUHAN GROVE HYDROGEN AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

my country's FCEV product development still has a long way to go before marketization. The reason is that domestically developed FCEV prototypes are far from being marketable in terms of power performance, fuel economy and service life of parts. requirements

Method used

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  • Hydrogen fuel cell electric vehicle motor system matching method
  • Hydrogen fuel cell electric vehicle motor system matching method
  • Hydrogen fuel cell electric vehicle motor system matching method

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Embodiment Construction

[0037] In order to make the purpose, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0038] A hydrogen fuel cell electric vehicle motor system matching method of the present invention will be described below by taking a certain hydrogen fuel cell electric vehicle as an example. The hydrogen fuel cell electric vehicle is designed on the basis of a certain internal combustion engine car. The car structure parameters are as follows:

[0039] Vehicle curb weight m (kg) 1220

[0040] Full load mass m 1 (kg) 1640

[0041] Windward area A(2m) 2.02

[0042] air resistance coefficient C D 0.32

[0043] Rolling resistance coefficient f 0.010

[0044] Tire rolling radius r(m) 0.288

[0045] Vehicle rotating mass conversion factor 1.04

[0046] Vehicle size (length*width*height) (mm) 4680*1700*1423

[0047] Wheelbase (m) 2.656

[0048] Tr...

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Abstract

The invention provides a hydrogen fuel cell electric vehicle motor system matching method which comprises the following steps: S1, calculating the peak rotating speed nmax of a required motor according to the maximum speed of an electric vehicle; S2, calculating the speed Ve of the electric vehicle when the required motor reaches the maximum torque according to the minimum acceleration time t whenthe electric vehicle accelerates to the specified speed ua, and calculating the corresponding base speed ne when the required motor reaches the maximum torque according to the Ve; S3, calculating a required motor peak torque Tmax; and S4, calculating the peak power Pmax of the required motor according to the peak torque Tmax of the required motor: determining that the required motor is the motorof which the peak rotating speed is greater than nmax, and the rated rotating speed is greater than ne, and the peak torque is greater than Tmax and the peak power is greater than Pmax. The hydrogen fuel cell electric vehicle motor system matching method has the advantages that the motor matching scheme of the hydrogen fuel cell electric vehicle is obtained through the calculation method, and a theoretical basis is provided for development of the hydrogen fuel cell electric vehicle.

Description

technical field [0001] The invention relates to the technical field of hydrogen fuel cell electric vehicles, in particular to a method for matching a motor system of a hydrogen fuel cell electric vehicle. Background technique [0002] Compared with developed countries such as Japan, South Korea, Europe and the United States, my country's current FCEV technology lags far behind. my country's FCEV product development still has a long way to go before marketization. The reason is that domestically developed FCEV prototypes are far from being marketable in terms of power performance, fuel economy and service life of parts. requirements. When developing FCEV vehicles, it is necessary to reversely calculate the technical parameters of FCEVs based on vehicle performance requirements, as a theoretical basis for the development of new models. [0003] The hydrogen fuel cell electric vehicle drives the vehicle through a permanent magnet brushless motor. The working area of ​​the perm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/10
CPCG06F17/10
Inventor 刘超周剑
Owner WUHAN GROVE HYDROGEN AUTOMOBILE CO LTD