Patent ID: 8952664
Filing Date: 2015-02-10
Classification: H01M,H02J,Y02E,Y02T

Abstract:
1. An apparatus for waking up a multi-BMS of a battery pack including N battery modules that transmits a wakeup signal output from a master BMS to N slave BMSs to wake up the N slave BMSs managing each battery module in the battery pack, the apparatus comprising: a series line connected between a high potential terminal and a low potential terminal of the battery pack to transmit the wakeup signal; an isolator connected on the series line and configured to turn on by the wakeup signal output from the master BMS; N−1 transistors connected to a higher potential than the isolator on the series line, each having two terminals other than a base terminal being connected on the series line and the base terminal being connected to each low potential terminal of N−1 battery modules among the N battery modules; and a switch unit connected between the isolator and the high potential terminal of the battery module or between each transistor and each high potential terminal of the battery modules, and configured to transmit the wakeup signal to wake up the N slave BMSs by the turn-on operation of each transistor or the isolator, wherein N is an integer greater than or equal to 2.