Electric vehicle powertrain parameter matching method, control device and equipment

Abstract

The invention discloses an electric vehicle powertrain parameter matching method, a control device and equipment. The matching method comprises the following steps: obtaining a value range of at leastone design parameter of a motor; Determine the value of each design parameter which can meet the vehicle dynamic calibration requirements within the range of the target parameters; Determining the motor type when each design parameter adopts the corresponding target parameter value; According to the contour map of motor efficiency corresponding to the motor type, the calculation efficiency of themotor is determined when each design parameter adopts the corresponding target parameter value respectively. According to the relationship between the design parameters corresponding to the motor type and the motor weight, determining the motor weight in which each design parameter adopts the corresponding target parameter value; According to the calculation efficiency and the weight of the motor, the optimal design parameters of the motor which meet the requirements of the vehicle operation economy are determined. It solves the problem that the whole vehicle dynamic performance and economy simulation can not be carried out when the powertrain parameters are matched.

Description

technical field [0001] The invention relates to the technical field of electric vehicle powertrain parameter matching design, in particular to an electric vehicle powertrain parameter matching method, control device and equipment. Background technique [0002] At present, in the matching of electric drive system motor and reducer for pure electric vehicles, there are generally two methods: one is to match the existing motor model, and check whether it meets the power and economic requirements of the whole vehicle; It is to re-match the parameters of the electric drive assembly to obtain new motor performance parameter requirements. Since the former is an existing product, the efficiency contour map of the motor can be obtained for power and economic simulation, but the selected motor is not the optimal solution; the latter can obtain the optimal performance parameter index of the motor, but it needs to design and produce a new In the early stage of the scheme design, the mo...

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Problems solved by technology

[0003] In order to solve the above technical problems, the present invention provides an electric vehicle powertrain parameter matching method, control device and equipment, which solves the problem that the power and economic simulation of the whole vehicle cannot be performed during the matching design of the electric drivetrain parameters

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