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Pure electric vehicle acceleration control method and system

A pure electric vehicle, acceleration control technology, applied in the field of pure electric vehicle acceleration control method and system, can solve the problems of large battery loss and short service life, and achieve the effect of prolonging the service life of the battery

Active Publication Date: 2019-05-10
湖南普西智能科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods have improved the dynamic performance of the whole vehicle to a certain extent, but these methods all have the disadvantages of large battery loss and short service life.

Method used

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  • Pure electric vehicle acceleration control method and system
  • Pure electric vehicle acceleration control method and system
  • Pure electric vehicle acceleration control method and system

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] see figure 1 , the present embodiment provides a pure electric vehicle acceleration control method, comprising the following steps:

[0058] S1: Construct a vehicle model according to the parameters of the vehicle and components, the vehicle model includes a longitudinal dynamics model, a motor drive model, a first battery pack model, and a second battery pack model;

[0059] S2: Establish the optimal control state equation according to the longitudinal dynamics model, and set optimal control constraint conditions according to the optimal state control equation, the motor drive model, the first battery pack model, and the second battery pack model;

[0060] S3: According to the constraints of the optimal control and the set evaluation performance indicators, optimize the torque of the vehicle to obtain the optimal control sequence, and complete the acceleration control of the pure electric vehicle according to the optimal control sequence.

[0061] The above-mentioned pu...

Embodiment 2

[0113] Corresponding to the above-mentioned embodiments, this embodiment provides a pure electric vehicle acceleration control system, including a memory, a processor, and a computer program stored in the memory and operable on the processor. When the processor executes the computer program, the above-mentioned method steps.

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PUM

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Abstract

The invention relates to the field of pure electric vehicle control, discloses a pure electric vehicle acceleration control method and system, and aims to improve the whole vehicle economy of a pure electric vehicle, reduce the battery loss and prolong the service life of the battery. The method comprises the following steps: constructing a whole vehicle model according to whole vehicle and part parameters, wherein the whole vehicle model comprises a longitudinal dynamic model, a motor driving model, a first battery pack model and a second battery pack model; establishing an optimal control state equation according to the longitudinal dynamics model, and setting constraint conditions of optimal control according to the optimal state control equation, the motor driving model, the first battery pack model and the second battery pack model; and optimizing the torque of the vehicle according to the constraint condition of the optimal control and a set evaluation performance index to obtainan optimal control sequence, and completing the acceleration control of the pure electric vehicle according to the optimal control sequence.

Description

technical field [0001] The invention relates to the field of pure electric vehicle control, in particular to a pure electric vehicle acceleration control method and system. Background technique [0002] With the rapid development of the times, the trend of global climate warming is becoming more and more serious. Overheating climate has caused many immeasurable disasters. Excessive carbon dioxide emissions are an important factor leading to climate warming, so reducing carbon dioxide emissions is particularly important. The automobile industry powered by traditional energy is one of the chief culprits for excessive carbon dioxide emissions. In order to reduce greenhouse gas emissions and save non-renewable energy, pure electric vehicles will become one of the future development directions of automobiles. [0003] At present, some existing control methods under the acceleration condition of pure electric vehicles mainly consider the dynamics of acceleration, such as: the pure...

Claims

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Application Information

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IPC IPC(8): B60L15/20B60W50/00
CPCY02T10/72
Inventor 张飞铁毛昌宏才亚民
Owner 湖南普西智能科技有限责任公司