Battery early warning and monitoring system

摘要

An early warning and monitoring system is disclosed for battery cells and battery packs. During normal cycling of a battery, surface temperature, voltage, current and impedance may be monitored to determine if abnormalities exist in the battery and/or battery structure. The abnormalities may be advantageously detected using battery temperature characteristics, where the characteristics are subject to rule-based processing to determine impending battery failure. By receiving advance notice of failure, a warning signal may be transmitted to provide notice and/or allow corrective action to be taken.

主权项

1. A method for monitoring a battery using a processor-based system, comprising the steps of:
receiving a temperature value measured from the battery in the system; receiving a temperature differential value from the battery in the system; receiving a state-of-charge (SoC) value measured from the battery in the system; processing at least one of the (a) temperature value and (b) temperature differential value, together with the SoC value to determine if the battery is approaching a failure condition prior to an actual failure condition, the failure condition comprising a battery short resulting from one of an overcharge condition and an overdischarge condition; and transmitting a warning signal if the processing step determined that a failure condition is approaching.