Electronic battery tester
First Claim
1. An electronic battery tester for testing a storage battery, comprising:
- a first Kelvin connector configured to electrically couple to a first terminal of the battery;
a second Kelvin connector configured to electrically couple to a second terminal of the battery;
a source configured to apply a time varying forcing function to the battery through a first conductor of the first Kelvin connector and a first conductor of the second Kelvin connector;
a sensor electrically coupled to a second conductor of the first Kelvin connector and a second conductor of the second Kelvin connector configured to sense a response of the storage battery to the applied forcing function and provide a response signal;
an analog to digital converter configured to digitize the response signal; and
processing circuitry configured to convert the digitized response signal into a plurality Fourier components, and to determine noise in the response signal from a subset of the plurality of Fourier components, and responsively provide an output related to presence or absence of noise in the response signal.
1 Assignment
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Accused Products
Abstract
An electronic battery tester for testing a storage battery is provided. The tester includes a pair of Kelvin connectors that can electrically couple to terminals of the battery. Also included, is a source that can apply a time varying forcing function to the battery through the Kelvin connectors. A sensor that electrically couples to the Kelvin connectors can sense a response of the storage battery to the applied forcing function and provide a response signal. An analog to digital converter digitizes the response signal. Processing circuitry converts the digitized response signal into multiple Fourier components and determines noise in the response signal from a subset of the multiple Fourier components.
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Citations
20 Claims
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1. An electronic battery tester for testing a storage battery, comprising:
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a first Kelvin connector configured to electrically couple to a first terminal of the battery;
a second Kelvin connector configured to electrically couple to a second terminal of the battery;
a source configured to apply a time varying forcing function to the battery through a first conductor of the first Kelvin connector and a first conductor of the second Kelvin connector;
a sensor electrically coupled to a second conductor of the first Kelvin connector and a second conductor of the second Kelvin connector configured to sense a response of the storage battery to the applied forcing function and provide a response signal;
an analog to digital converter configured to digitize the response signal; and
processing circuitry configured to convert the digitized response signal into a plurality Fourier components, and to determine noise in the response signal from a subset of the plurality of Fourier components, and responsively provide an output related to presence or absence of noise in the response signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of testing a battery, comprising:
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applying a time varying forcing function to the battery through a first pair of connectors of a Kelvin connection;
sensing a response of the battery to the applied time varying forcing function through a second pair of connections of the Kelvin connection and providing a response signal;
digitizing the response signal;
converting the digitized response signal into a plurality of Fourier components;
determining noise in the response signal from a subset of the plurality of Fourier components; and
providing an output related to presence or absence of noise in the response signal. - View Dependent Claims (18, 19, 20)
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Specification