Simulation analysis method for driving performance index of pure electric bus based on motor thermal coupling

A pure electric bus and driving performance technology, which is applied in the field of simulation analysis of driving performance indicators of pure electric buses, can solve problems such as difficulty in laying out a vehicle model, and achieve the effect of avoiding problems.

Pending Publication Date: 2022-01-14
XIAMEN UNIV
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This patent is only applicable to the motor field, and it is d

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  • Simulation analysis method for driving performance index of pure electric bus based on motor thermal coupling
  • Simulation analysis method for driving performance index of pure electric bus based on motor thermal coupling
  • Simulation analysis method for driving performance index of pure electric bus based on motor thermal coupling

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[0049] The invention is further described below by way of specific embodiments.

[0050] like figure 1 For the overall design drawing of the present invention, it first calculates and simulates the ANSYS motor according to the related formula; and the simulation results are calculated as the SIMULINK motor thermal coupling model and the simulation temperature judgment is based; if the temperature error conditions of the two meet the requirements The effects of motor heat coupling on the driving performance of pure electric passenger cars are obtained according to the working conditions;

[0051] Combine figure 2 and image 3 Simulation analysis method of driving performance index of pure electric passenger car based on motor thermal coupling, including the following steps:

[0052] S101: Calculate the thermal generation rate of the motor model and the thermal generation rate and heat dissipation rate in the temperature field analysis; the motor model is established in the ANSYS Wor...

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Abstract

The invention discloses a simulation analysis method for driving performance indexes of a pure electric bus based on motor thermal coupling. The method comprises the following steps: calculating thermal parameters of a motor model and a heat generation rate and a heat dissipation rate in temperature field analysis; establishing the motor model in Ansys Workbench, and carrying out input, grid division and simulation of boundary conditions and loads; establishing a motor thermal coupling model in Simulink, and verifying the motor thermal coupling model established in the Simulink by using the motor model established in the Ansys Workbench; establishing a battery model, a speed reducer model, a whole vehicle dynamics model and a driver model in the Simulink, and establishing a whole vehicle model in combination with the motor thermal coupling model; and simulating the whole vehicle model, and analyzing influences of motor thermal coupling on driving performance indexes of a pure electric bus. According to the method provided by the invention, influences of motor temperature rise on whole vehicle driving indexes of a pure electric bus can be known in advance, so that strategy adjustment can be made in time, and a series of problems caused by motor overheating are avoided.

Description

technical field [0001] The invention relates to the field of analysis of pure electric passenger cars, in particular to a simulation analysis method for driving performance indexes of pure electric passenger cars based on motor thermal coupling. Background technique [0002] In the hot summer, it is very easy for the motor temperature to be too high. Once it occurs, and the motor cooling system of the electric bus is not turned on in time or fails, it may directly affect the normal operation of the pure electric bus, thereby reducing the working efficiency and service life of the bus, which will not only cause huge economic losses, but also cause major personnel losses. casualties. [0003] Chinese invention patent CN108763165A proposes a method for calculating the temperature of a hybrid electric motor, which can deduce the change of the preset motor temperature according to some working condition parameters. This patent is only applicable to the motor field, and it is di...

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Application Information

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IPC IPC(8): G06F30/20G06Q10/06G06F119/08
CPCG06F30/20G06Q10/06393G06F2119/08
Inventor 侯亮张文博卜祥建王少杰
Owner XIAMEN UNIV
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