U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Battery charging device having time shared charging cycle

Patent 5726551 Issued on March 10, 1998. Estimated Expiration Date: Icon_subject October 21, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Electric regeneration apparatus and method for driving a load
Patent #: 4689531
Issued on: 08/25/1987
Inventor: Bacon

Battery charger for charging a plurality of batteries
Patent #: 5003244
Issued on: 03/26/1991
Inventor: Davis, Jr.

Electronic battery charger device and method
Patent #: 5055763
Issued on: 10/08/1991
Inventor: Johnson, et al.

Battery charger for a portable wireless telephone set having means for tricklingly charging the battery with an increased current during a stand-by period of the telephone set
Patent #: 5130634
Issued on: 07/14/1992
Inventor: Kasai

Charger for batteries of different type
Patent #: 5187422
Issued on: 02/16/1993
Inventor: Izenbaard, et al.

Unique computer power system with backup power
Patent #: 5237258
Issued on: 08/17/1993
Inventor: Crampton

High-speed battery charging device and a control circuit therefor
Patent #: 5241258
Issued on: 08/31/1993
Inventor: Cheon

Fault detector for a plurality of batteries in battery backup systems
Patent #: 5254930
Issued on: 10/19/1993
Inventor: Daly

NiCd/NiMH battery charger Patent #: 5523668
Issued on: 06/04/1996
Inventor: Feldstein

Inventors

Assignee

Application

No. 734072 filed on 10/21/1996

US Classes:

320/124, SEQUENTIAL CHARGING OR DISCHARGING OF BATTERIES OR CELLS320/104, Vehicle battery charging320/108, Charger inductively coupled to cell or battery320/119, With individual charging of plural batteries or cells320/155Time control

Examiners

Primary: Tso, Edward H.

Attorney, Agent or Firm

Foreign Patent References

  • 0 607 041 EP. 07/13/1994
  • 0 665 627 EP. 08/13/1995
  • 2 004 140 GB. 03/13/1979

International Class

H01M 010/46

Foreign Application Priority Data

1995-10-19 JP

Abstract

A battery charging unit is provided with a charge controlling unit which is designed to perform at least one of rest mode operating function which causes to rest charging for respective battery, groups and discharge mode operating function which causes to discharge electric power from the respective battery groups in addition to charge mode operating function for the respective battery groups, the battery charging unit controls charging for the respective battery groups through the charge controlling unit while repeating at least two modes including the charging mode among the charging mode, rest mode and discharge mode in a predetermined time cycle and further performs a mutual control between the respective battery groups so that at least one battery group is placed in the rest mode in a predetermined sequence during the operation thereof, thereby, drawbacks of a conventional pulse like charging and burp charging, which are suitable for a quick charging but requires a large instantaneous charging current which causes the size increse of the charging unit and the electric circuit concerned, are eliminated.

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