Balance control management system and balance control method of lithium-ion power battery pack

Abstract

The invention discloses a balance control management system and a balance control method of a lithium-ion power battery pack. The balance control management system of the lithium-ion power battery pack comprises a MCU central control unit, a battery information monitoring module, a battery heat radiation module, a balance control module and a battery module, wherein the MCU central control unit is respectively connected with the battery information monitoring module, the battery heat radiation module and the balance control module, and the battery information monitoring module, the battery heat radiation module and the balance control module are respectively connected with the battery module. According to the balance control method, in the charging process, the battery information monitoring module continuously carries out data collection and conversion on the information of a single battery, feeds the obtained data to the MCU central control unit through an infrared transmitter, and when the voltage of one battery deviates from an interval value, and the MCU central control unit charges and discharges the battery by controlling a K-series switch and an optocoupler relay. According to the balance control management system and the balance control method of the lithium-ion power battery pack, the circuit is simple, the battery balance method is effective and easy to achieve, and the same balance effect is achieved both in the processes of charging and discharging.

Description

technical field [0001] The invention relates to a battery balance control management system, in particular to a lithium-ion power battery pack balance control management system and a balance control method thereof, belonging to the technical field of battery management. Background technique [0002] The development of automobiles is one of the most important achievements of modern industrial technology. However, the application of a large number of automobiles in the world has produced and continues to cause serious environmental and human survival problems. Due to energy and environmental considerations, electric vehicles have achieved rapid development under the joint promotion of governments and automobile manufacturers. However, the safety and use cost of energy storage devices have affected the popularization and application of electric vehicles, and extending the service life of energy storage devices is one of the effective ways to reduce the use cost and improve safe...

AI Technical Summary

Problems solved by technology

This method is very straightforward, but when the battery pack is composed of a large number of cells, the battery pack voltage will fluctuate in a large range, and a step-down converter is required at this time, which increases part of the cost and system complexity

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