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

Cell monitor and control unit for multicell battery

Patent 5153496 Issued on October 6, 1992. Estimated Expiration Date: Icon_subject September 27, 2010. 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

3928791

Satellite battery reconditioning system and method
Patent #: 3997830
Issued on: 12/14/1976
Inventor: Newell ,   et al.

Circuit for controlling the charging current supplied to a plurality of battery loads in accordance with a predetermined program
Patent #: 4016474
Issued on: 04/05/1977
Inventor: Mason

Charging system and method for multicell storage batteries
Patent #: 4079303
Issued on: 03/14/1978
Inventor: Cox

System and method for charging electrochemical cells in series
Patent #: 4238721
Issued on: 12/09/1980
Inventor: DeLuca ,   et al.

Redundant battery protection system
Patent #: 4281278
Issued on: 07/28/1981
Inventor: Bilsky ,   et al.

Battery charging system
Patent #: 4313078
Issued on: 01/26/1982
Inventor: Bilsky ,   et al.

Battery monitoring and charger control system
Patent #: 4388584
Issued on: 06/14/1983
Inventor: Dahl ,   et al.

Method for charging a storage battery
Patent #: 4394611
Issued on: 07/19/1983
Inventor: Fallon ,   et al.

Battery monitoring systems
Patent #: 4484130
Issued on: 11/20/1984
Inventor: Lowndes ,   et al.

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Inventor

Assignee

Application

No. 589092 filed on 09/27/1990

US Classes:

320/119, With individual charging of plural batteries or cells320/122, Bypassable battery cell320/131, Deep discharge (e.g., conditioning, etc.)320/132With state-of-charge detection

Examiners

Primary: Stephan, Steven L.
Assistant: Dougherty, Thomas M.

Attorney, Agent or Firm

Foreign Patent References

  • 2559364 DE. 07/13/1977
  • 2109182 GB. 12/13/1984

International Class

H02J 007/00

Abstract

A cell monitoring and control circuit for a multicell battery comprises a cell access switch coupled to the cells of the battery for electronically accessing individual cells of the battery and a monitoring and control circuit coupled to the cell access switch for electronic communication with the cells. The circuit is coupled to the battery for providing electric power and constitutes an insignificant current drain on the battery. The circuit senses the voltage state of each cell and controls the charging of each cell and provides End-of-Discharge and End-of-Charge signals.

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