BATTERY MANAGEMENT SYSTEM FOR TRANSMITTING SECONDARY PROTECTION SIGNAL AND DIAGNOSIS SIGNAL USING A SMALL NUMBER OF INSULATION ELEMENTS

摘要

Disclosed is a battery management system for transmitting a secondary protection signal and a diagnosis signal using a small number of insulation elements. N battery management units included in the battery management system transmit at least two pieces of data via one communication line through time division. N data signals transmitted from the N battery management units are transmitted in a sequential order or are mixed to one signal and transmitted to an external device.

主权项

1. A battery management system for managing a battery pack, comprising:
N battery management units configured to manage secondary batteries included in the battery pack, in which N is a natural number greater than or equal to 2; a communication line electrically connected to each battery management unit to transmit data to an external device which controls the battery management system; an insulation element configured to transmit a signal while electrically separating the external device from the battery management system; and a signal mixer electrically connected to the communication line to mix signals received through the communication line, wherein each battery management unit transmits at least two pieces of data through time division.