Investigation of Charging Methods for Nickel-Cadmium Batteries.

摘要

Sealed nickel-cadmium batteries, each battery consisting of five 4.0 Ah D cells manufactured by General Electric Company, showed little difference in charge acceptance between the pulse and constant current d.c. charging modes in a temperature range of -20F to about +100F. Above +100F maximum charge acceptance is attained at the 2C rate for both charge modes, while at temperatures below +40F the charge rate should be as low as C/10. Charge control by a pressure switch developed by General Research Laboratories proved to be highly pressure switch developed by General Research Laboratories proved to be highly practical for the sealed D-type nickel-cadmium batteries employed in this study. Memory, a phenomenon due to the formation of alpha-type nickelic oxide in the nickel cathodes of vented nickel-cadmium batteries, can be erased by occasionally draining the battery to about O volt per cell at the C/10 rate.