The invention discloses a
voltage sample and electric quantity balance colinear battery
management system and management method. The method comprises the steps of S1, cyclically scanning and sampling a
voltage of each battery unit of a
battery pack in real time; S2, initiating
data synchronization and issuing a balance calculation instruction by a master control module according to specific working condition of the
battery pack; S3, calculating and recording balance quantity by a slave control module according to
instruction data and voltages collected in real time, wherein the
instruction data is sent by the master control module; S4, judging an electric quantity balance state of the
battery pack according to a calculation result of the slave control module; S5, stopping scanning and sampling, and calculating and recording an electric quantity balance position of the battery pack; and S6, carrying out electric quantity balance on the battery pack according to the recorded electric quantity balance position. According to the
system and the method, the
voltage sample and electric balance are realized through a
time division multiplexing harness, the voltage sample precision is ensured, the wiring is simplified, and the cost is reduced.