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الإعدادات

الإعدادات

1. US20050264263 - Methods of charging, equalizing, and controlling Li-based batteries

المكتب الولايات المتحدة الأمريكية
رقم الطلب 10709831
تاريخ الطلب 01.06.2004
رقم النشر 20050264263
تاريخ النشر 01.12.2005
نوع النشر A1
التصنيف الدولي للبراءات
Description not available in lang ar
مودعي الطلبات TSENTER BORIS I
المخترعين Tsenter Boris I.
الوكلاء BORIS TSENTER
بيانات الأولوية 10709831 01.06.2004 US
الاسم
(EN) Methods of charging, equalizing, and controlling Li-based batteries
الملخص
(EN)

Method of charging Li-based battery involves keeping the right balance among battery voltage, ohmic resistance, and charging current. Invention offers battery overvoltage protection value as the difference between the maximum voltage and the instantaneous open-circuit voltage. Overvoltage protection is supported when the minimum charging current is set as the ratio between difference in battery terminal voltage and instantaneous open-circuit voltage, and ohmic resistance. Method of equalizing Li-based battery is based on stabilization of cell voltage at end-of-charge by connecting in parallel to each cell, three series-connected Ni-based (i.e., NiCd or NiMH) cells, which serve as voltage stabilizers at end-of-charge. Individual lithium cell (flying cell) periodically connected to battery cells in process of charging and (or) discharging is used for equalizing of lithium battery cells. Method of controlling Li-based battery is based on measurement of battery ohmic and chemical resistances, and open-circuit voltage, with and without current interruption. Ohmic resistance controls the battery charging process and battery state-of-health. Nonstationary open-circuit voltage is used as an indicator (fuel gauge) of battery state-of-charge. Electrical double layer capacity provides information regarding electrode surface.