Battery charger circuit

Details Battery charger circuit Battery charger circuit

H - Electricity

02

J

320/10

H02J 7/10 (2006.01) H02J 7/00 (2006.01)

Patent

CA 1273996

ABSTRACT OF THE DISCLOSURE A latching arrangement is provided in a high speed battery charging circuit. The latching arrangement includes a momentary switch for momentarily changing a voltage level on a gate controlling capacitor for a gate controlled high current path and an inversion circuit between the capacitor and the gate, thus permitting a voltage provided by a thermostatically controlled switch to be applied to the capacitor for controlling the gate. The thermostatically controlled switch senses battery cell temperature and permits fast charging for temperatures below a threshold. The momentary switch is momentarily activated to initiate the fast charging operation. Upon sensing a temperature rise, the thermostatically controlled switch terminates fast charging and initiates trickle charging. When the battery cell cools and the thermostatically controlled switch again closes, the latching arrangement prevents resumption of a fast charge operation.

546764

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