Electric battery testing device with automatic voltage scaling to determine dynamic conductance
First Claim
1. A process for testing a battery having a dynamic conductance and a nominal voltage comprising the steps of:
- a. measuring the battery'"'"'s dynamic conductance;
b. determining the battery'"'"'s nominal voltage;
c. automatically scaling the measured dynamic conductance in accordance with the battery'"'"'s nominal voltage;
d. displaying the scaled result.
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Abstract
A self-contained electronic device for testing disparate storage batteries having any one of a fixed plurality of possible nominal voltages is disclosed. The testing device performs small-signal measurements of a battery'"'"'s dynamic conductance and provides either a proportional numerical readout, displayed in appropriate battery measuring units, or a corresponding qualitative assessment of the battery'"'"'s relative condition. Special voltage-sensing circuitry within the testing device identifies the particular one of the possible nominal voltages possessed by the battery and scales the dynamic conductance measurements accordingly. As a result, the quantitative or qualitative information provided to the user is automatically adjusted to comport with the nominal voltage of the battery undergoing test without the user having to actually input the battery'"'"'s nominal voltage to the testing device.
218 Citations
19 Claims
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1. A process for testing a battery having a dynamic conductance and a nominal voltage comprising the steps of:
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a. measuring the battery'"'"'s dynamic conductance; b. determining the battery'"'"'s nominal voltage; c. automatically scaling the measured dynamic conductance in accordance with the battery'"'"'s nominal voltage; d. displaying the scaled result. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A process for testing a battery having a dynamic conductance, a terminal voltage, and a nominal voltage comprising the steps:
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a. determining the battery'"'"'s dynamic conductance; b. sensing the battery'"'"'s terminal voltage; c. comparing the sensed terminal voltage with at least one fixed reference voltage and thereby identifying the battery'"'"'s particular nominal voltage from among a fixed plurality of possible values; d. automatically scaling the dynamic conductance in accordance with the identified nominal voltage; e. displaying the scaled result. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A process for testing a battery having a dynamic conductance, a temrnal voltage and a nominal voltage comprising the steps of:
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a. determining the battery'"'"'s dynamic conductance; b. sensing the battery'"'"'s terminal voltage; c. comparing the sensed terminal voltage with a fixed reference voltage and thereby identifying the battery'"'"'s particular nominal voltage from among two possible values; d. automatically scaling the dynamic conductance in accordance with said identified nominal voltage; e. displaying the scaled result. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification