04560937 is referenced by 58 patents and cites 14 patents.

The system includes a digital integrator having a plurality of digital stages operable to store a numerical value in binary digital form which is indicative of state of charge. A switching circuit is provided for generating a series of voltage pulses on a single output line with each pulse corresponding in length to the binary digital value stored in the integrator to provide a time based resultant indication of the stored binary digital value. A filtering means is included to provide a substantially smooth analog output voltage having an amplitude corresponding to the summation of the pulses.

The system preferably includes a delayed high voltage reset feature to set the integrator to a full charge state in response to voltage levels accompanying charging of the battery.

Title
Battery state of charge metering method and apparatus
Application Number
6/321671
Publication Number
4560937
Application Date
November 16, 1981
Publication Date
December 24, 1985
Inventor
Eugene P Finger
Brewster
NY, US
Agent
Curtis Ailes
Assignee
Curtis Instruments
NY, US
IPC
G01N 27/42
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