Diagnostic use of a plurality of electrical battery parameters
First Claim
1. An electronic device comprising:
- an interface for receiving a battery, the battery comprising a battery module for supplying power to the electronic device; and
a power management module coupled to the interface for receiving the battery and configured to;
measure a plurality of voltage responses of the battery due to current flow in the battery module;
compare each of the plurality of measured voltage responses of the battery to a corresponding reference voltage response, the corresponding reference voltage response being selected from a plurality of reference voltage responses; and
if a number of the plurality of measured voltage responses corresponds to a threshold minimum number of the plurality of reference voltage responses, authenticate the battery for use with the electronic device.
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Accused Products
Abstract
In at least one embodiment, a power management module measures different observable quantities of a battery, such as terminal voltage or current, and measures a voltage response of the battery based upon the measurements. The measured voltage response of the battery is compared to a plurality of reference voltage responses, which may be determined for authentic batteries, for example. If the measured voltage response corresponds to each of the reference voltage responses, the battery is authenticated for use with an electronic device. If necessary, additional voltage responses may be measured and compared against corresponding reference voltage responses until the battery is authenticated by a sufficient number of corresponding responses. A relative condition of the battery, such as an age or state of health, may also be estimated based on the measured voltage response of the battery.
58 Citations
22 Claims
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1. An electronic device comprising:
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an interface for receiving a battery, the battery comprising a battery module for supplying power to the electronic device; and a power management module coupled to the interface for receiving the battery and configured to; measure a plurality of voltage responses of the battery due to current flow in the battery module; compare each of the plurality of measured voltage responses of the battery to a corresponding reference voltage response, the corresponding reference voltage response being selected from a plurality of reference voltage responses; and if a number of the plurality of measured voltage responses corresponds to a threshold minimum number of the plurality of reference voltage responses, authenticate the battery for use with the electronic device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for authenticating a battery for use with an electronic device, the battery comprising a battery module for supplying power to the electronic device, the method comprising:
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measuring a plurality of voltage responses of the battery due to current flow in the battery module; comparing each of the plurality of measured voltage responses of the battery to a corresponding reference voltage response, the corresponding reference voltage response being selected from a plurality of reference voltage responses; and if a number of the plurality of measured voltage responses corresponds to a threshold minimum number of the plurality of reference voltage responses, authenticating the battery for use with the electronic device. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A power management module for an electronic device supplied with power from a battery comprising a battery module, the power management module comprising a processor and a memory coupled to the processor, the memory storing instructions which, when executed by the processor, cause the processor to:
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measure a plurality of voltage responses of the battery due to current flow in the battery module; compare each of the plurality of measured voltage responses of the battery to a corresponding reference voltage response, the corresponding reference voltage response being selected from a plurality of reference voltage responses; and if a number of the plurality of measured voltage responses corresponds to a threshold minimum number of the plurality of reference voltage responses, authenticate the battery for use with the electronic device.
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Specification