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Title: Lithium-ion battery diagnostic and prognostic techniques

Abstract

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.

Inventors:
Issue Date:
Research Org.:
Honeywell International Inc., Morristown, NJ (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1176196
Patent Number(s):
7612540
Application Number:
11/552,287
Assignee:
Honeywell International Inc. (Morristown, NJ)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; 47 OTHER INSTRUMENTATION

Citation Formats

Singh, Harmohan N. Lithium-ion battery diagnostic and prognostic techniques. United States: N. p., 2009. Web.
Singh, Harmohan N. Lithium-ion battery diagnostic and prognostic techniques. United States.
Singh, Harmohan N. Tue . "Lithium-ion battery diagnostic and prognostic techniques". United States. https://www.osti.gov/servlets/purl/1176196.
@article{osti_1176196,
title = {Lithium-ion battery diagnostic and prognostic techniques},
author = {Singh, Harmohan N.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2009},
month = {11}
}

Patent:

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