US PATENT SUBCLASS 320 / 161
.~ With detection of current or voltage differential (e.g., slope, etc.)


Current as of: June, 1999
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320 /   HD   ELECTRICITY: BATTERY OR CAPACITOR CHARGING OR DISCHARGING

137  DF  BATTERY OR CELL CHARGING {11}
161.~ With detection of current or voltage differential (e.g., slope, etc.)


DEFINITION

Classification: 320/161

With detection of current or voltage differential (e.g., slope, etc.):

(under subclass 137) Subject matter including means to determine the time-rate-of-change of the magnitude of charging current or battery or cell voltage to determine the state-of-charge of the battery or cell.

SEE OR SEARCH THIS CLASS, SUBCLASS:

151, for differential of current or voltage detection in addition to thermal condition detection.

156, for differential of current or voltage detection in addition to time control.