Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – Having variable number of cells or batteries in series
Patent
1997-05-05
1999-07-06
Wong, Peter S.
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
Having variable number of cells or batteries in series
320160, 320162, H02J 700
Patent
active
059201797
ABSTRACT:
A charging system and method are disclosed that provide balanced charge cycles for batteries or multiple-cell battery packs by using a controller, a charging source gate, multiple adjustable shunting devices and multiple charge monitors. During a virgin charge cycle, the controller adjusts each of the adjustable shunting devices to provide a maximum charging current, opens the charging source gate, and then monitors the charge level of each of the battery cells. When the voltage potential of one of the battery cells reaches a threshold value, the charge source gate is closed to disable the charging current, and the fully charged battery cell is identified. The controller then determines a shunt value for adjusting the adjustable shunting device connected to the fully charged battery cell and uses this shunt value on the next charge cycle. Each subsequent charge cycle results in a different battery cell becoming fully charged and then the recalculation of a shunt value. The overall effect is to allow each battery or each cell of a battery pack to be periodically fully charged, regardless of the variations in the charging, discharging and efficiency characteristics of the batteries or battery cells.
REFERENCES:
patent: 3947743 (1976-03-01), Mabuchi et al.
patent: 4719401 (1988-01-01), Altmejd
patent: 4792743 (1988-12-01), Tsujino et al.
patent: 4849682 (1989-07-01), Bauer et al.
patent: 5153496 (1992-10-01), LaForge
patent: 5283512 (1994-02-01), Stadnick et al.
patent: 5387857 (1995-02-01), Honda et al.
patent: 5438250 (1995-08-01), Retzlaff
patent: 5498950 (1996-03-01), Ouwerkerk
patent: 5504415 (1996-04-01), Podrazhansky et al.
patent: 5666040 (1997-09-01), Borbeau
patent: 5675233 (1997-10-01), Kaneko et al.
AER Energy Resources Inc.
Toatley , Jr. Gregory J.
Wong Peter S.
LandOfFree
System and method for balancing charge cycles for batteries or m does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for balancing charge cycles for batteries or m, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for balancing charge cycles for batteries or m will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-901950