| 主权项 |
1. A method of communicating in a battery management and protection system comprising a string of battery management and protection integrated circuit devices connected to one another in a daisy chain configuration, the string of battery management and protection integrated circuit devices including a first device, one or more intermediate devices, and a last device in that order, the method comprising:
receiving, in the first one of the devices, a message initiated from an external controller, the message being addressed to one or more of the intermediate devices, subsequently passing the message up the string from one device to the next over a bi-directional connection line until all the devices in the string have received the message; executing, by the one or more devices to which the message is addressed, a command contained in the message; and transmitting, by each device in the string, a data frame over the bi-directional connection line in a downstream direction toward the first device in the string, wherein the last device in the string serves as a master for initiating all downstream data transmissions in response to the message addressed to the one or more of the intermediate devices, and wherein the first device in the string collects the data frames for all the devices in the string and transfers the data to the external controller. |
