Battery pack fault communication and handling

摘要

A method of handling a fault in a battery pack, the method comprising: a battery module supplying a voltage to a high-voltage circuit; a battery management system transmitting a heartbeat signal to the battery module via a fault bus; the battery module preventing the heartbeat signal from being transmitted back to the battery management system in response to the battery module detecting a critical condition; and the battery management system shutting off the supply of voltage from the battery module to the high-voltage circuit in response to the battery module preventing the heartbeat signal from being transmitted back to the battery management system. The battery module transmits battery data to the battery management system via a communication bus, which is distinct from the fault bus, and the battery management system transmits one or more commands to the battery module via the communication bus.

主权项

1. A battery pack fault communication and handling system comprising:
a battery module comprising at least one battery, wherein the battery module is configured to supply a voltage to a high-voltage circuit; a fault bus; and a Battery Management System (BMS) coupled to the battery module via the fault bus, wherein the BMS is configured to transmit a heartbeat signal to the battery module via the fault bus and to receive the heartbeat signal back from the battery module via the fault bus, and wherein the BMS is configured to shut off the supply of voltage from the battery module to the high-voltage circuit in response to the battery module preventing the BMS from receiving the heartbeat signal.