Energy transfer and equalization in rechargeable lithium batteri

Details Energy transfer and equalization in rechargeable lithium batteri Energy transfer and equalization in rechargeable lithium batteri

1997-04-10

2000-03-21

Wong, Peter S.

Electricity: battery or capacitor charging or discharging

Battery or cell charging

Multi-rate charging

320139, 320162, 320163, 320 21, H01M 1044

Patent

active

060406852

ABSTRACT:
A method of charging a rechargeable lithium battery which comprises charging the battery with a charging current; sampling a charging voltage of the battery during charging to recognize potential electrolyte decomposition; interrupting the charging current periodically to create current-free periods and sampling an open circuit voltage of the battery at a plurality of points during each current-free period to identify potential shunting and unequal states of charge among individual cells of the battery; lowering the charging current if any of the above-identified adverse conditions are identified and continuing charging with the charging current if the potential adverse charging condition is not identified; and terminating charging when the charging current is lowered below a pre-determined minimum level.

REFERENCES:
patent: 3487284 (1969-12-01), Cady
patent: 3890556 (1975-06-01), Melling et al.
patent: 3911349 (1975-10-01), Seeley et al.
patent: 3911350 (1975-10-01), Swope
patent: 3953302 (1976-04-01), Rao et al.
patent: 4016473 (1977-04-01), Newman
patent: 4079303 (1978-03-01), Cox
patent: 4086525 (1978-04-01), Ibsen et al.
patent: 4139680 (1979-02-01), Schlaikjer
patent: 4345008 (1982-08-01), Breault
patent: 4385269 (1983-05-01), Aspinwall et al.
patent: 4388582 (1983-06-01), Saar et al.
patent: 4392101 (1983-07-01), Saar et al.
patent: 4414291 (1983-11-01), Breault
patent: 4554500 (1985-11-01), Sokara
patent: 4560937 (1985-12-01), Finger
patent: 4680528 (1987-07-01), Mikami et al.
patent: 4725784 (1988-02-01), Peled et al.
patent: 4746854 (1988-05-01), Baker et al.
patent: 4761487 (1988-08-01), Godshall
patent: 4806840 (1989-02-01), Alexander et al.
patent: 5017856 (1991-05-01), Johnson, Jr.
patent: 5057762 (1991-10-01), Goedken et al.
patent: 5119009 (1992-06-01), McCaleb et al.
patent: 5132626 (1992-07-01), Limuti et al.
patent: 5143799 (1992-09-01), Tsenter
patent: 5157320 (1992-10-01), Kuriloff
patent: 5166596 (1992-11-01), Goedken
patent: 5179335 (1993-01-01), Nor
patent: 5200689 (1993-04-01), Interiano et al.
patent: 5206578 (1993-04-01), Nor
patent: 5237257 (1993-08-01), Johnson et al.
patent: 5278000 (1994-01-01), Huang et al.
patent: 5290640 (1994-03-01), Tsenter et al.
patent: 5291117 (1994-03-01), Rydborn
patent: 5296997 (1994-03-01), Betton et al.
patent: 5304915 (1994-04-01), Sanpei et al.
patent: 5304917 (1994-04-01), Somerville
patent: 5307000 (1994-04-01), Podrazhansky et al.
patent: 5321347 (1994-06-01), Chien
patent: 5329219 (1994-07-01), Garrett
patent: 5330861 (1994-07-01), Fetcenko et al.
patent: 5331268 (1994-07-01), Patino et al.
patent: 5343380 (1994-08-01), Champlin
patent: 5349281 (1994-09-01), Bugaj
patent: 5350995 (1994-09-01), Iketani
patent: 5350996 (1994-09-01), Tauchi
patent: 5352967 (1994-10-01), Nutz et al.
patent: 5365160 (1994-11-01), Leppo et al.
patent: 5369364 (1994-11-01), Renirie et al.
patent: 5376873 (1994-12-01), Toya
patent: 5391193 (1995-02-01), Thompson
patent: 5396163 (1995-03-01), Nor et al.
patent: 5408170 (1995-04-01), Umetsu et al.
patent: 5411537 (1995-05-01), Munshi et al.
patent: 5412306 (1995-05-01), Meadows et al.
patent: 5418084 (1995-05-01), Georgopoulos
patent: 5422559 (1995-06-01), Hall et al.
patent: 5432029 (1995-07-01), Mitate et al.
patent: 5432426 (1995-07-01), Yoshida
patent: 5432429 (1995-07-01), Armstrong, II et al.
patent: 5440221 (1995-08-01), Landau et al.
patent: 5442274 (1995-08-01), Tamai
patent: 5444353 (1995-08-01), Shinohara
patent: 5449996 (1995-09-01), Matsumoto et al.
patent: 5449997 (1995-09-01), Gilmore et al.
patent: 5460899 (1995-10-01), Charkey
patent: 5467005 (1995-11-01), Matsumoto et al.
patent: 5483165 (1996-01-01), Cameron et al.
patent: 5489836 (1996-02-01), Yuen
patent: 5498492 (1996-03-01), Hara et al.
patent: 5500583 (1996-03-01), Buckley et al.
patent: 5694023 (1997-12-01), Podrazhansky et al.
patent: 5729116 (1998-03-01), Tsenter
Damon W. Chu, "Tradeoffs in Implementing Intelligent Battery Management", Jul. 10, 1995, 6 pgs.
David Freeman, "Freeing Portables from Battery Tyranny," Jul. 10, 1995, 6 pgs.

Affiliated with

Also associated with

Rating

Energy transfer and equalization in rechargeable lithium batteri does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Energy transfer and equalization in rechargeable lithium batteri, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Energy transfer and equalization in rechargeable lithium batteri will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-733232