Lithium-ion cell voltage telemetry circuit
AssigneeLockheed Martin Corporation
InventorsFrank Andrew Linkowsky, WojCiech Jaklik, Robert John Secor
Life of this patent
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Abstract
A battery is a collection of cells place in series, parallel, or both. A telemetry circuit is presented for determining the individual voltage of each cell making up a battery. This device uses a high voltage isolation circuit to isolate each cell from the remainder of the measuring circuitry. This is to ensure precision cell voltage measurements are made even at high common-mode voltages. This is an inherent problem for high voltage battery telemetry designs.
Claims18
A device for measuring a voltage, comprising:
- an isolation circuit operatively connectable to receive the voltage;
- a driving circuit operatively connected to the isolation circuit;
- sampling circuitry operatively connected to the isolation circuit;
A method for measuring a voltage using a measurement circuit, comprising:
- receiving a voltage to be measured;
- isolating said voltage from at least a part of said measurement circuit;
- providing a representation of said isolated voltage;
- sampling said representation of said isolated voltage;
Dependencies are inferred from the claim text.