Electricity: measuring and testing – Electrolyte properties – Using a battery testing device
Reexamination Certificate
2006-03-17
2008-12-16
Ullah, Akm E (Department: 2838)
Electricity: measuring and testing
Electrolyte properties
Using a battery testing device
C324S427000, C324S429000, C320S134000
Reexamination Certificate
active
07466138
ABSTRACT:
Disclosed is a method for structuring a comparative reference value used to estimate a residual charge (SOC; State of Charge) of a battery. The method comprises comprising steps of: measuring open circuit voltages (OCV) and residual capacities (SOC) of a battery at various temperatures and tabling them according to the temperatures; measuring an open circuit voltage (OCV1) at a temperature before a test; carrying out a discharge capacity counting (Ah-counting) for the battery using a measurement apparatus while carrying out a dynamic pattern test; providing a sufficient relaxation time period for the battery after ending the dynamic pattern test; measuring an open circuit voltage (OCV2) at a temperature after the sufficient relaxation time period; obtaining residual capacity values of the battery corresponding to the measured open circuit voltages (OCV1, OCV2) from the table; assuming a difference between the above-obtained two residual capacity values as a δSOC and calculating an 1C-rated capacity based on the δSOC; and applying the calculated rated capacity as a denominator of the discharge capacity counting to calculate an exact residual capacity of the battery.
REFERENCES:
patent: 4725784 (1988-02-01), Peled et al.
patent: 6011379 (2000-01-01), Singh et al.
patent: 6674265 (2004-01-01), Yoshida et al.
patent: 7136762 (2006-11-01), Ono
patent: 2002/0109506 (2002-08-01), Kawakami et al.
patent: 2002/0145430 (2002-10-01), Arai et al.
patent: 2003/0052647 (2003-03-01), Yoshida et al.
patent: 2003/0214303 (2003-11-01), Ying
patent: 2004/0160224 (2004-08-01), Yamazaki et al.
patent: 2005/0024061 (2005-02-01), Cox et al.
patent: 1020050013972 (2005-02-01), None
Cho Il
Kim Do Youn
Cantor & Colburn LLP
LG Chem Ltd.
Tran Nguyen
Ullah Akm E
LandOfFree
Method of structuring comparative reference value used in... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of structuring comparative reference value used in..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of structuring comparative reference value used in... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4025754