New energy automobile battery data real-time acquisition system and method

Abstract

The invention discloses a new energy automobile battery data real-time acquisition system and method, and relates to the technical field of automobile battery monitoring. The system comprises a data acquisition unit, an automobile battery pack, an MCU operation control module, a power supply module and a liquid crystal display module. The data acquisition unit comprises a voltage acquisition module, a current acquisition module and a temperature acquisition module; the output end of the MCU operation control module is connected with the heat management module, the alarm module, the display module, the CAN communication module and the storage module. According to the invention, the data acquisition unit establishes communication with the MCU operation control module based on the whole vehicle CAN interface wire harness, and the data acquisition unit acquires the current, voltage and temperature data of the vehicle battery in real time for processing and analysis to obtain the current working state of the vehicle battery. The automobile battery sampling precision is improved, and the working state of the new energy automobile battery is accurately evaluated.

Description

technical field [0001] The invention belongs to the technical field of automobile battery monitoring, in particular to a system and method for real-time acquisition of new energy automobile battery data. Background technique [0002] The battery management system (battery management system, BMS) is an indispensable and important part of electric vehicles. There are two key functions of the BMS: one is to accurately and real-time estimate the state of charge (SOC) of the battery; the other is to balance the battery pack. SOC is defined as the ratio of the charge remaining in the battery to the battery's nominal charge capacity. Accurate and real-time SOC estimation can not only determine the remaining power of the battery pack, so as to obtain more accurate cruising range of electric vehicles, improve the energy utilization rate of the battery pack, but also monitor the operating status of the power battery pack to prevent it from overcharging Over-discharge enhances the sa...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a new energy vehicle battery data real-time acquisition system and method, through the data acquisition unit based on the vehicle CAN interface harness, establish communication with the MCU operation control module, and the data acquisition unit collects the current of the vehicle battery in real time , voltage and temperature data are processed and analyzed, and the working status of the current car battery is obtained, which solves the problem of inaccurate and unstable data collection of the existing electric car battery module, which leads to inaccurate evaluation of the working status

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