Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1996-12-05
1997-12-23
Wong, Peter S.
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
320 16, 320 17, 320 35, H02J 700, H01M 1044
Patent
active
057010684
ABSTRACT:
A battery management system for management and control of a plurality of rechargeable batteries connected in series. A programmed central processing unit communicates with a plurality of battery modules and a bulk charger. Each of the battery modules includes a rechargeable battery, a sensor node including a plurality of battery sensors and a microcontroller that processes signals generated by the battery sensors, and a direct current charger. During a charging cycle the bulk charger provides a variable bulk charging current to the rechargeable batteries connected in series and each of the rechargeable batteries receive a charging current from individual direct current chargers positioned at each rechargeable battery. During the charging cycle, the voltage and temperature of the rechargeable batteries are monitored by the programmed central processing unit by means of the sensor nodes and the bulk charging current reduced by one half when any battery voltage reaches a predetermined clamping voltage. Once the bulk charging current is reduced to approximately 1 to 2 percent of the 3-hour discharge capacity for the rechargeable batteries, the bulk charger is turned off and the direct current chargers finish each battery charge independently.
REFERENCES:
patent: 4024523 (1977-05-01), Arnold et al.
patent: 4052717 (1977-10-01), Arnold et al.
patent: 4079303 (1978-03-01), Cox
patent: 4217536 (1980-08-01), Izumi
patent: 4238721 (1980-12-01), DeLuca et al.
patent: 4249242 (1981-02-01), Fleurier
patent: 4278970 (1981-07-01), Streczyn et al.
patent: 4322766 (1982-03-01), Becker et al.
patent: 4553081 (1985-11-01), Koenck
patent: 4571533 (1986-02-01), Dey
patent: 4670703 (1987-06-01), Williams
patent: 4709202 (1987-11-01), Koenck et al.
patent: 4885523 (1989-12-01), Koenck
patent: 5103156 (1992-04-01), Jones et al.
patent: 5159272 (1992-10-01), Rao et al.
patent: 5179335 (1993-01-01), Nor
patent: 5187425 (1993-02-01), Tanikawa
patent: 5202617 (1993-04-01), Nor
patent: 5204611 (1993-04-01), Nor et al.
patent: 5229704 (1993-07-01), Knepper
patent: 5250904 (1993-10-01), Salander et al.
patent: 5280320 (1994-01-01), Mahoney
patent: 5280827 (1994-01-01), Taylor et al.
patent: 5302902 (1994-04-01), Groehl
patent: 5305629 (1994-04-01), Campbell et al.
patent: 5349535 (1994-09-01), Gupta
patent: 5422558 (1995-06-01), Stewart
patent: 5438250 (1995-08-01), Retzlaff
patent: 5469042 (1995-11-01), Ruhling
"A Microcomputer-Based Battery management System", by Zbigniew Noworolski and Eric Praetzel, International Telecommunications Energy Conference, Nov. 5-8, 1991, Proceedings Published by IEEE, 1992, pp. 177-180.
"Monitoring battery performance in Remote-Area Power-Supply (RAPS) systems", by M. wade, A. Chew, and R. Geraghty, The Workshop on Development and Management of Battery Systems, Oct. 25-26, 1990, Published by Journal of Power Sources, vol. 35, No. 4, Sep. 1991, pp. 421-430.
"Modular battery charging system", Advertisement published by Mirabor Designs 1994.
"Charge Equalizing System For Life Stabilizing of Long String Valve Requlated EV-Batteries", by Hans Tuphorn, Published in the Budingen Quarterly Report, Sep. 26, 1994.
"SmartGuard--Long-Life Battery Using Intelligent Modular Control System" by John Dunning, Ilker Bayraktar, and Benjamin Eiref, Sales Brochure published by Delco Remy and AeroVironment, Jun. 3, 1994.
Schmidt, H., et al.; The Charge Equalizer--A New System to Extend Battery Lifetime in Photovoltaic Systems, U.P.S. and Electric Vehicles; Societe Des Elecriciens Et Des Electroniciens, vol. 2, Sep. 27, 1993 and International Telecommunications Energy Conference. (INTELEC), Paris, Sep. 27-30, 1993.
Baer Jose T.
Blanyer Richard J.
Davis Bill C.
Electrosource, Inc.
Law Patrick B.
Wong Peter S.
LandOfFree
Battery management system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Battery management system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Battery management system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1804461