Electricity: battery or capacitor charging or discharging – One cell or battery charges another – Vehicle battery charging
Patent
1999-05-20
2000-10-17
Tso, Edward H.
Electricity: battery or capacitor charging or discharging
One cell or battery charges another
Vehicle battery charging
320118, 320136, H01M 1046
Patent
active
061337072
ABSTRACT:
A voltage detector (12) detects the voltage levels of the battery blocks of the battery set (10). A presence of an overdischarged cell is detected when a voltage difference between each of the battery blocks reaches or exceeds a predetermined value (for example, 1V). At this point, a battery ECU (14) sets the SOC value of the battery set (10) at the lower control limit value (for example, 20%). This triggers an HV ECU (16) to control the load (18) such that charging is effectuated in the battery set (10). If further discharge occurs, the battery set (10) is disconnected from the load (18) by a relay (20).
REFERENCES:
patent: 3707664 (1972-12-01), Esch
patent: 4622508 (1986-11-01), Mattau et al.
patent: 5530336 (1996-06-01), Eguchi et al.
patent: 5578915 (1996-11-01), Crouch, Jr. et al.
patent: 5631533 (1997-05-01), Imaseki
patent: 5880575 (1999-03-01), Itou et al.
Kahlen, H., et al., Battery Management with a Two Wire Bus for single Cell Charging and Measurement,International Electrical Vehical Symposium, Oct. 13, 1996, pp. 79-83.
Kikuchi Yoshiaki
Nakayama Yoshiyuki
Sekimori Toshiyuki
Tojima Kazuo
Toyota Jidosha & Kabushiki Kaisha
Tso Edward H.
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