Charge controlling device and method for multi-cell battery, and

Details Charge controlling device and method for multi-cell battery, and Charge controlling device and method for multi-cell battery, and

1999-05-12

2000-12-12

Riley, Shawn

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

320119, 320122, 429 90, H02J 700

Patent

active

061603759

ABSTRACT:
This invention relates to a lithium ion multi-cell battery (15) wherein plural lithium ion cells (C.sub.n) are arranged in series. Each cell comprises a positive electrode of manganese/spinal oxide and a negative electrode. A first Zener diode (Z.sub.n 1) and first resistor (R.sub.n 1) are connected in series between the electrodes. By setting the Zener voltage (VZ1) of the first Zener diode (Z.sub.n 1) equal to the cell voltage VL of the responding cell (C.sub.n) when positive electrode crystal phase transport stars in that cell (C.sub.n), the charge amount of each cell is made uniform.

REFERENCES:
patent: 4614905 (1986-09-01), Petersson et al.
patent: 5578914 (1996-11-01), Morita
patent: 5629601 (1997-05-01), Feldstein
patent: 5738957 (1998-04-01), Amine et al.
patent: 5910723 (1999-06-01), Perelle
patent: 5982050 (1999-11-01), Matsui

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