公开(公告)号：US20230350840A1

公开(公告)日：2023-11-02

申请号：US17732114

申请日：2022-04-28

Applicant: STMicroelectronics S.r.I.

Inventor： Daniele Oreggia ,  Alessandro Cannone ,  Diego Alagna ,  Marcello Raimondi

IPC: G06F13/42 ,  G06F13/364 ,  G06F13/40

CPC classification number: G06F13/4291 ,  G06F13/364 ,  G06F13/4022

Abstract: A battery management system includes: a controller; a master battery management integrated circuit (BMIC) device coupled to the controller and configured to communicate with the controller through a standard Serial Peripheral Interface (SPI) protocol; and a first slave BMIC device and a second slave BMIC device that are connected in a daisy chain configuration and communicating through Isolated SPI interfaces, where the first slave BMIC device is coupled to the master BMIC through an Isolated SPI interface, where the Isolated SPI interface uses a differential signal comprising a positive signal and a complementary negative signal, where a bit frame of the positive signal includes a bit period followed by an idle period having a same duration as the bit period, where the first slave BMIC device and the second slave BMIC device are configured to be coupled to a first battery pack and a second battery pack, respectively.