Pure electric vehicle control unit calibration system based on CAN (controller area network) bus and calibration method

Abstract

The invention discloses a pure electric vehicle control unit calibration system based on CAN (controller area network) bus, which comprises an upper computer with two-way communication and a lower computer with two-way communication. The upper computer comprises a data storage module, an MAP (macro assembly program) chart optimization module, a parameter calibration module and a CAN bus communication processing module. The lower computer is a pure electric vehicle control unit (VCU) and comprises a CAN bus communication module, a data acquisition module, a calibrated data storage module and a control algorithm module. The invention further provides a pure electric VCU online calibration method based on the CAN bus. By introducing the CAN bus into the design of the electric vehicle control unit calibration system, the invention realizes online optimization of the control parameters of power, response speed, electricity consumption and the like of the pure electric vehicle, sloves the problems of difficulty in modifying the parameters, long development cycle and poor maneuverability in the prior art, and solves the problem that differences of the operating conditions and diversity of the requirements on power performance and life mileage of the vehicles under different uses, requirements to the control parameters of the vehicle control units are different due to the type variety of pure electric vehicles.

Description

technical field [0001] The invention relates to the field of new energy vehicles, in particular to an online calibration system and calibration method for a vehicle controller of a pure electric vehicle. Background technique [0002] Today, the automobile industry has become a pillar industry for the economic development of the world and various countries. Cars are an essential part of modern civilization. However, while people are enjoying the car civilization, they must also face the negative effects of cars: environmental pollution and energy crisis. In order to solve these two increasingly serious problems, since the last few decades of the last century, many countries and automobile companies have invested huge sums of money in the research and development of new energy vehicles, such as pure electric vehicles (EV), hybrid vehicles, etc. New energy vehicles such as (HEV) and fuel cell vehicles (FEV) have come out and matured. Looking at all kinds of new energy vehicl...

AI Technical Summary

Problems solved by technology

At present, all the disclosed technical solutions on CAN bus calibration cannot realize the calibration of the pure electric vehicle controller, and there is no calibration method for the pure electric vehicle controller based on the CAN bus in the prior art and literature

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