Patent ID: 8111071

Claim:
A sensing and control apparatus for a battery management system coupled to at least one of a plurality of cells, the sensing and control apparatus comprising: a sensing unit including: at least one cell relay of a plurality of cell relays, the at least one cell relay being configured to be coupled to the at least one of the plurality of cells; a voltage detection unit comprising a first relay coupled to the at least one cell relay, the voltage detection unit being configured to: receive a reference voltage when each of the plurality of cell relays is turned off; and generate a second voltage by amplifying by a gain a first voltage that corresponds to the reference voltage; and a reference voltage transmit unit coupled to a connection point between the first relay and the at least one cell relay; and a main control unit configured to calculate a valid gain corresponding to a ratio of the second voltage to the reference voltage when a temperature of the voltage detection unit is within a threshold temperature range.