Temperature-controlled charging of gas-tight storage batteries

Details Temperature-controlled charging of gas-tight storage batteries Temperature-controlled charging of gas-tight storage batteries

H - Electricity

02

J

320/10

H02J 7/04 (2006.01) H01M 10/44 (2006.01) H02J 7/00 (2006.01)

Patent

CA 1075767

ABSTRACT OF THE DISCLOSURE At a constant charging current the charge capacity of gas-tight storage batteries is strongly dependent upon the temperature: in cold tempera- tures the restrained charge reaction causes the switch-off voltage to be reached after a short period of time, at temperatures above 30°C, however, parasitic secondary reactions occur which absorb the charge current either fully or in part, thereby possibly preventing a full charging and attaining of a switch-off voltage. According to the present invention, gas-tight storage batteries can be charged up to switch-off voltage by a current which rises in the temperature range of from -10°C to +45°C at increasing temperatures in the form of a straight line. In this fashion, a good approximation of a full charge is achieved.

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