Method for detecting a defective charger circuit
First Claim
1. A battery operable to receive a charge from a charger via a pair of terminals, the battery comprising:
- an analog front end (AFE) coupled to the pair of terminals, the AFE being configured to receive at least one input corresponding to voltage measured across the pair of terminals;
a battery controller coupled to the AFE by a serial link and operable to communicate using a basic input/output system (BIOS), the battery controller receiving the at least one input via the serial link, the battery controller being placed in a charge_not_received state in response to the voltage being below a selected nonzero value, wherein placing the battery controller in the charge_not_received state is indicative of a charger being defective; and
a rechargeable cell coupled with the AFE.
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Abstract
In a method and system for detecting charger failure, a battery is operable to receive a charge from the charger via a pair of terminals. The battery includes an analog front end (AFE) coupled to the pair of terminals. The AFE is configured to receive at least one input corresponding to voltage measured across the pair of terminals. A battery controller included in the battery is coupled to the AFE by a serial link. The battery controller receives the at least one input via the serial link. In response to the voltage being below a predefined value, the battery controller is placed in a charge_not_received state, which is indicative of the charger being defective.
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Citations
21 Claims
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1. A battery operable to receive a charge from a charger via a pair of terminals, the battery comprising:
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an analog front end (AFE) coupled to the pair of terminals, the AFE being configured to receive at least one input corresponding to voltage measured across the pair of terminals; a battery controller coupled to the AFE by a serial link and operable to communicate using a basic input/output system (BIOS), the battery controller receiving the at least one input via the serial link, the battery controller being placed in a charge_not_received state in response to the voltage being below a selected nonzero value, wherein placing the battery controller in the charge_not_received state is indicative of a charger being defective; and a rechargeable cell coupled with the AFE. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 16, 17)
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9. An information handling system (IHS) comprising:
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a processor; and a power supply operable to provide power to the processor, wherein the power supply includes; a charger operable to provide a charge; and a battery operable to receive the charge from the charger via a pair of terminals, wherein the battery includes; an analog front end (AFE) coupled to the pair of terminals, the AFE being configured to receive at least one input corresponding to voltage measured across the pair of terminals; and a battery controller coupled to the AFE by a serial link and operable to communicate using a basic input/output system (BIOS), the battery controller receiving the at least one input via the serial link, the battery controller being placed in a charge_not_received state in response to the voltage being below a selected nonzero value, wherein placing the battery controller in the charge_not_received state is indicative of a charger being defective. - View Dependent Claims (10, 11, 12, 13, 14, 18, 19)
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15. A method of charging a battery operable to receive a charge from a charger via a pair of terminals, comprising:
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receiving at an analog front end (AFE) at least one input corresponding to voltage measured across a pair of terminals, wherein the AFE is coupled to the pair of terminals; and placing a battery controller in a charge_not_received state in response to the at least one input indicating a voltage across the pair of terminals being below a selected nonzero value, wherein placing the battery controller in the charge_not_received state is indicative of a charger being defective, and wherein the battery controller is operable to communicate using a basic input/output system (BIOS). - View Dependent Claims (20, 21)
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Specification