Battery management system and method

Abstract

The invention provides a battery management system and method. The method comprises the steps of collecting a plurality of parameter values of batteries; correspondingly comparing the parameter values according to a plurality of preset standard reference values to obtain operation information of the batteries; controlling the batteries to be opened or closed according to the operation information of the batteries; and repairing the closed batteries. By the battery management system and method, working state information of battery packs can be timely obtained and working states are analyzed to obtain health information about the battery packs, so that the fault battery packs can be correspondingly repaired according to the health information of the battery packs; the problem of voltage imbalance of the batteries caused by self-consumption of the batteries can be effectively solved; and the service lifetime of the batteries is prolonged.

Description

Technical field [0001] The present invention mainly relates to the technical field of battery management, in particular to a battery management system and method. Background technique [0002] At present, batteries on the market are widely used. These batteries are usually battery packs composed of multiple batteries in series or parallel. However, because the battery itself has self-consumption (about 3% to 8%), each battery is The voltages are all different and unbalanced; in this way, during the charging process of multiple batteries connected in series, if one of the batteries is fully charged and reaches the set maximum voltage value, the charging will stop, and the other batteries will not be fully charged, resulting in a decrease in battery capacity ; On the contrary, during the discharging process of the multiple batteries connected in series, if one of the batteries is discharged and reaches the set minimum voltage value, the discharging will be stopped, and the other ba...

AI Technical Summary

Problems solved by technology

[0002] At present, batteries on the market are widely used. These batteries are usually battery packs, which are composed of multiple batteries connected in series or parallel. The voltages are different and unbalanced; in this way, during the charging process of multiple batteries connected in series, if one of the batteries is fully charged and reaches the set maximum voltage value, the charging will stop, and other batteries will not be fully charged, resulting in a decrease in battery capacity. ; On the contrary, during the discharge process of multiple batteries connected in series, if one of the batteries is fully discharged and reaches the set minimum voltage value, it will stop discharging, and other batteries will not be fully discharged, resulting in a decrease in battery discharge rate.

In the existing battery management, the user lacks the working status information of the battery to analyze the working status information of the battery, and to know the fault information of each battery in time, and to take corresponding measures for the battery with the fault information. control function

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