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Title: Lithium-ion battery diagnostic and prognostic techniques

Patent ·
OSTI ID:1176196

Embodiments provide a method and a system for determining cell imbalance condition of a multi-cell battery including a plurality of cell strings. To determine a cell imbalance condition, a charge current is applied to the battery and is monitored during charging. The charging time for each cell string is determined based on the monitor of the charge current. A charge time difference of any two cell strings in the battery is used to determine the cell imbalance condition by comparing with a predetermined acceptable charge time difference for the cell strings.

Research Organization:
Honeywell International Inc., Morristown, NJ (United States)
Sponsoring Organization:
USDOE
Assignee:
Honeywell International Inc. (Morristown, NJ)
Patent Number(s):
7,612,540
Application Number:
11/552,287
OSTI ID:
1176196
Country of Publication:
United States
Language:
English

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