Patent ID: 11936219
Assignee: LG ENERGY SOLUTION, LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 4:
5. A method for blocking overcurrent in a battery protection circuit according to claim 1, the method comprising:
an overcurrent sensing step of sensing, in the overcurrent sensing unit, a voltage at both ends of a sensing resistor of a power management unit provided in an external system connected to a battery;
an overcurrent detection step of detecting, in the overcurrent detection unit, an overcurrent due to overcharge or overdischarge of a battery, based on a voltage at both ends of a sensing resistor of a power management unit of the external system, which is sensed through the overcurrent sensing step; and
an overcurrent blocking step of turning off, in the FET control unit, the charge control FET or the discharge control FET to block overcurrent, which corresponds to the battery detected to be in an overcurrent state by overcharge or overdischarge through the overcurrent detection step.