Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1999-05-27
2000-10-31
Tso, Edward H.
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
320103, 320128, H02J 700
Patent
active
06140800&
ABSTRACT:
A battery equalization circuit for equalizing charge between at least first and second series connected batteries includes a switching circuit and a resonant circuit. Each battery has a positive end and a negative end, where the positive end of the second battery is coupled to the negative end of the first battery at a common node. The switching circuit is connectable to (i) the positive end of the first battery at a positive node, and (ii) the negative end of the second battery at a negative node; and the resonant circuit is connectable between the switching circuit and the common node of the batteries, wherein the switching circuit is adapted to alternately couple the resonant circuit in parallel with the first and second batteries such that a DC current component flows between the first and second batteries through the resonant circuit as a function of a charge imbalance therebetween.
REFERENCES:
patent: 4079303 (1978-03-01), Cox
patent: 4502001 (1985-02-01), Galloway
patent: 4949028 (1990-08-01), Brune
patent: 4967136 (1990-10-01), Nofzinger
patent: 5003244 (1991-03-01), Davis, Jr.
patent: 5479083 (1995-12-01), Brainard
patent: 5528122 (1996-06-01), Sullivan et al.
patent: 5710504 (1998-01-01), Pascual et al.
patent: 5742150 (1998-04-01), Khuwatsamrit
patent: 5821729 (1998-10-01), Schmidt et al.
The Use Of Equalizing Converters for Serial Charging Of Long Battery Strings, D.C. Hopkins, C.R. Mosling, and S.T. Hung, 1991 IEEE, pp. 493-498.
Charge Equalization for Series Connected Battery Strings, Nasser H. Kutkut, Deepak M. Divan, Donald W. Novotny, 1994 IEEE, pp. 1008-1015.
Design Considerations for Charge Equalization Of An Electric Vehicle Battery System, Nasser H. Kutkut, H.L.N. Wiegman, Deepak M. Divan, D.W. Novotny, 1995 IEEE, pp. 96-103.
Power Electronics, Converters, Applications, and Design, Second Edition, John Wiley & Sons, Inc., Chapter 9, pp. 249-297.
Toatley , Jr. Gregory J.
Tso Edward H.
LandOfFree
Autonomous battery equalization circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Autonomous battery equalization circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Autonomous battery equalization circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2056122