STORAGE BATTERY SYSTEM AND SECONDARY LITHIUM-ION BATTERY CAPACITY RECOVERY METHOD Russian patent published in 2019 - IPC H01M10/42 H01M10/44 H01M10/52 H02J7/00 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering, namely to a battery system and a method of recovering the capacity of a secondary lithium-ion battery. Secondary lithium-ion accumulator contains positive electrode and negative electrode located opposite each other, and separator located between them, wherein width of active material layer of negative electrode exceeds width of active material layer of positive electrode, and on end of layer of active material of negative electrode there is an undirected section not facing layer of active material of positive electrode, where lithium ions accumulate during charging of accumulator system, thus reducing accumulator capacity. Capacitance control unit (960) sends commands to control unit (920) to perform recovery control of storage battery (10) in assembly, at that, container recovery control device includes discharge mode and reservoir recovery mode. In the discharge mode, the electronic control unit (960) discharges accumulator (10) assembly to the predetermined recharge area, in the capacitance recovery mode, the electronic control unit (960) cyclically executes in the overcharge area the voltage increase for increasing the voltage on the secondary lithium-ion battery, achieved by termination discharge, and pulsed discharge of secondary lithium-ion accumulator at discharge current oscillation.

EFFECT: higher efficiency of recovery of battery capacity in a short period of time.

6 cl, 18 dwg