Battery monitor with wireless remote communication
First Claim
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1. A method for monitoring an operative condition of a battery, the method comprising the steps of:
- injecting an ac signal across battery terminals;
detecting an analog ac signal output from the battery, the ac signal output being proportional to the injected ac signals;
determining the battery internal resistance based on the analog ac signal output and the injected ac signal;
comparing the battery internal resistance with a threshold resistance to determine an operative condition of the battery.
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Abstract
An apparatus and method for monitoring at least one battery condition. A ac signal is applied to a battery. A difference between a signal output from the battery and a threshold determines a battery condition. The determined battery condition is transmitted remotely from the battery location through a controller to a network server and/or is visibly displayed at the battery location.
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Citations
21 Claims
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1. A method for monitoring an operative condition of a battery, the method comprising the steps of:
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injecting an ac signal across battery terminals;
detecting an analog ac signal output from the battery, the ac signal output being proportional to the injected ac signals;
determining the battery internal resistance based on the analog ac signal output and the injected ac signal;
comparing the battery internal resistance with a threshold resistance to determine an operative condition of the battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An apparatus for monitoring an operative condition of a battery comprising:
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means for injecting an ac signal across battery terminals;
means for detecting an analog ac signal output from the battery, the ac signal output being proportional to the injected ac signals;
means for determining the battery internal resistance based on the analog ac signal output and the injected ac signal;
means for comparing the battery internal resistance with a threshold resistance to determine an operative condition of the battery. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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Specification