Method and System for Monitoring Health Condition of Battery Pack

Provided are a method and a system for monitoring the health condition of a battery pack. The method includes: obtaining data of voltage difference between the maximum and minimum voltages of the battery cells within a battery pack of an electric vehicle; determining an alert value based on the data...

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Bibliographic Details
Main Authors ZHANG, Yizhen, QI, Hongzhong, XU, Yonggang, RANGEL, Tonatiuh, SHANG, Jin
Format Patent
LanguageEnglish
Published 27.01.2022
Subjects
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
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Summary:Provided are a method and a system for monitoring the health condition of a battery pack. The method includes: obtaining data of voltage difference between the maximum and minimum voltages of the battery cells within a battery pack of an electric vehicle; determining an alert value based on the data of voltage difference, wherein the alert value is a combined value of the following factors: the slope of the mean battery cell voltage difference within a preset period of past time, the predicted mean battery cell voltage difference within a preset period of future time, and the minimum of battery cell voltage difference; generating a predictive maintenance notice for the battery pack of the electric vehicle when the alert value is larger than a threshold value.
Bibliography:Application Number: US202016937575