An intelligent monitoring and management system for lithium batteries of electric vehicles

Abstract

The invention discloses an intelligent monitoring and management system for electric automobile lithium batteries. The intelligent monitoring and management system is characterized in that the system comprises a display unit, a master controller module, a detection module and a battery box, the detection module comprises current detection circuits, voltage detection circuits, temperature acquisition circuits, electric leakage detection circuits, internal resistance detection circuits and SOC value detection circuits, all of which are used for detecting the current, the voltage, the temperature, the electric leakage conditions, the battery internal resistance and the SOC values of all battery packs, information is collected and transmitted to sub-controller modules through a CAN bus, if the master controller module comprises a charging and discharging balance control module, a threshold value judgment module, an alarm module, a positioning module and a charging pile detection module, the battery packs are monitored and managed, a charging pile nearby is estimated according to the electricity consumption and the endurance capacity, and the situation that an electric automobile stays on the way due to the fact that electricity runs out is avoided.

Description

technical field [0001] The invention relates to the field of battery management of electric vehicles, in particular to an intelligent monitoring and management system for lithium batteries of electric vehicles. Background technique [0002] The battery management system (BMS) is the link between the battery and the user. The main object is the secondary battery. The secondary battery has the following disadvantages, such as less energy storage, problems caused by series and parallel use, safety, and difficulty in battery power estimation. The performance of batteries is complex, and the characteristics of different types of batteries vary greatly. The main purpose of the battery management system is to improve the utilization rate of the battery, prevent the battery from overcharging and over-discharging, prolong the service life of the battery, monitor the state of the battery, and improve the battery life of the vehicle. At present, the battery management system has made ...

AI Technical Summary

Problems solved by technology

If the safety monitoring and effective management of the battery pack are not carried out, the difference between the cells in the battery pack will gradually increase during use, resulting in overcharge, over discharge, and overcurrent of the cells after the battery pack has been running for a period of time And a series of failures such as high ambient temperature of the battery pack, resulting in a reduction in the service life of the entire battery pack

Performance degradation, even scrapping, explosion, etc.

However, due to the particularity of the electric vehicle power supply itself, there is no reasonable and reliable power supply measurement method. If the vehicle needs to be charged when the power supply is insufficient during driving, and the charging pile cannot be found quickly, it will bring a lot of inconvenience to the driver. The further promotion and application of electric vehicles

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