Method and apparatus for estimating the charge/discharge...

Details Method and apparatus for estimating the charge/discharge... Method and apparatus for estimating the charge/discharge...

2009-06-04

2010-06-01

Tso, Edward (Department: 2858)

Electricity: measuring and testing

Electrolyte properties

Using a battery testing device

C320S132000, C320S149000

Reexamination Certificate

active

07728598

ABSTRACT:
An apparatus estimates charge/discharge electricity amount without being affected by current measurement error. Under specific selection conditions, a no-load voltage calculation part uses pairs of data consisting of current data I(n) and voltage data V(n) corresponding to the current data to calculate a no-load voltage Vsepas the voltage intercept at a current of zero in a straight-line approximation obtained by statistical processing such as regression analysis using a least squares method. If specific current conditions exist for a certain amount of time, an open circuit voltage calculation part calculates the terminal voltage of the secondary battery as the open circuit voltage Voc. An estimated charge/discharge electricity amount calculation part uses a preset change-in-voltage adjustment constant ΔVbc/adjustment coefficient Kb, change-in-electromotive-force constant Keqand polarization voltage generation constant Kpolto calculate the estimated charge/discharge electricity amount ΔQeas a function of the change ΔVbin the no-load or open circuit voltage over a predetermined period of time.

REFERENCES:
patent: 5703469 (1997-12-01), Kinoshita
patent: 6160380 (2000-12-01), Tsuji et al.
patent: 2004/0239333 (2004-12-01), Kikuchi
patent: 08-336202 (1996-12-01), None
patent: 2000-014019 (2000-01-01), None
patent: 2001-223033 (2001-08-01), None

Affiliated with

Also associated with

Rating

Method and apparatus for estimating the charge/discharge... 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 and apparatus for estimating the charge/discharge..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for estimating the charge/discharge... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4248874