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Drive control method for all-electric car

A pure electric car and vehicle controller technology, applied in the field of car control, can solve problems such as division and non-consideration

Inactive Publication Date: 2013-07-10
JILIN UNIV
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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to overcome the problem that the existing technology does not consider dividing the working modes of the whole vehicle when driving to ensure that the power and economy of the whole vehicle are maximized under different modes, and provides a pure A drive control method for electric cars, the drive control method includes normal mode control strategy, power mode control strategy, economic mode control strategy, power limit strategy, etc., the drive control strategy is a software part of the vehicle controller, through the to realize the whole control process

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Embodiment Construction

[0071] The present invention is described in detail below in conjunction with accompanying drawing:

[0072] Known prior art has following deficiency by foregoing description:

[0073] 1. It is not considered to ensure that the power and economy of the vehicle can be maximized in different modes by dividing the working modes when the vehicle is driving.

[0074] 2. Except when the accelerator pedal is pressed to the bottom, the torque compensation function is not considered during the driving of other vehicles, so the dynamic performance of the whole vehicle cannot be satisfied during the driving of other vehicles.

[0075] 3. The formulation of the target torque does not consider improving the combined efficiency of power components, so the vehicle economy has not been greatly improved.

[0076] In order to overcome the deficiencies of the above-mentioned prior art, the present invention proposes a driving control method for pure electric cars. The driving control method for...

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Abstract

The invention discloses a drive control method for an all-electric car. The drive control method aim at solving the problems that division of working modes during a finished automobile driving running is not considered, a torque compensation function is not considered in the running process of other vehicles except flooring of an accelerator pedal, and united efficiency of a power component is not considered in goal torque setting. The drive control method for the all-electric car comprises the steps of utilizing a finished automobile controller to automatically identify a finished automobile working mode according to current finished automobile acceleration mean values and an acceleration mean square errors, and enabling the finished automobile working mode to be one of a common mode, a power mode and an economic mode; working out an expected torque Treq under the corresponding mode according to a goal working mode control strategy in the finished automobile controller after the working mode identification is finished; restraining and correcting the expected torque Treq according to a power limiting value strategy in the finished automobile controller after the expected torque Treq under the goal working mode is obtained, and if a finished automobile has no major failure at the time, outputting ultimate goal torque commands to a motor.

Description

technical field [0001] The invention relates to a control method of a car, more precisely, the invention relates to a driving control method of a pure electric car. Background technique [0002] The research and development of modern electric vehicles is a complex system engineering. Its theoretical basis is to organically combine automobile technology, motor technology, drive technology, power electronics technology, energy storage technology and modern control theory to realize the integration and optimization of the system. Its key technologies can be summarized into the following four main parts: drive motor and its control technology, powertrain control technology, battery energy management technology and high voltage safety management technology. [0003] The vehicle controller is undoubtedly the brain of the pure electric vehicle, and the driving control strategy is its software part, which mainly calculates the current target accurately based on various sensor inform...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L15/20
CPCY02T10/72
Inventor 初亮张培志周飞鲲郭崇富子丞
Owner JILIN UNIV
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