Monitoring battery cell voltage
First Claim
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1. A monitoring circuit comprising:
- a plurality of voltage detection paths, wherein each voltage detection path of said plurality of voltage detection paths is coupled to a battery cell and is operable for comparing a cell voltage of said battery cell with a switch threshold of a switch, and wherein each voltage detection path is ON if said cell voltage is greater than said switch threshold; and
a logic device coupled to said plurality of voltage detection paths operable for generating an alert signal according to a conductance status of each voltage detection path.
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Abstract
A battery monitoring circuitry is provided. The battery monitoring circuitry includes a plurality of voltage detection paths and a logic device. Each voltage detection path is coupled to a battery cell and is operable for comparing a cell voltage of the battery cell with a switch threshold of a switch. Each voltage detection path is ON if the cell voltage is greater than the switch threshold. The logic device is coupled to the plurality of voltage detection paths and is operable for generating an alert signal according to a conductance status of each voltage detection path.
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Citations
26 Claims
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1. A monitoring circuit comprising:
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a plurality of voltage detection paths, wherein each voltage detection path of said plurality of voltage detection paths is coupled to a battery cell and is operable for comparing a cell voltage of said battery cell with a switch threshold of a switch, and wherein each voltage detection path is ON if said cell voltage is greater than said switch threshold; and
a logic device coupled to said plurality of voltage detection paths operable for generating an alert signal according to a conductance status of each voltage detection path. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. Agas gauge circuitry comprising:
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a plurality of voltage detection paths, wherein each voltage detection path of said plurality of voltage detection paths is coupled to a battery cell and is operable for comparing a cell voltage of said battery cell with a switch threshold of a switch, and wherein each voltage detection path is ON if said cell voltage is greater than said switch threshold;
a logic device coupled to said plurality of voltage detection paths operable for generating an alert signal according to a conductance status of each voltage detection path; and
a controller coupled to said logic device operable for receiving said alert signal, and for halting power delivery to a load if at least one of the plurality of voltage paths is OFF. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method of monitoring cell voltages, comprising:
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comparing a battery cell voltage for each battery cell of a plurality of battery cells with a switch threshold of a switch;
turing on said switch if said battery cell voltage is greater than said switch threshold;
generating a detection signal for each battery cell according to a conductance status of said switch, wherein said detection signal indicates whether said battery cell voltage is greater than said switch threshold. - View Dependent Claims (22, 23, 24, 25, 26)
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Specification