METHOD AND SYSTEM FOR DETECTION OF COUNTERFEIT BATTERIES
First Claim
1. A method of detecting an unauthorized battery pack in a portable electronic device, comprising:
- monitoring a temperature profile of a battery during an operation of the portable electronic device, the temperature profile determined in accordance with outputs sensed at temperature monitoring terminals of a battery pack containing the battery; and
providing an indication that the battery pack is an unauthorized battery pack in response to determining that the temperature profile is inconsistent with predetermined temperature characteristics of an authorized battery pack.
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Accused Products
Abstract
A method and system for detecting the use of an unauthorized battery pack in a portable electronic device. The method comprises monitoring a temperature profile of at least one battery cell in a battery pack during an operation of the portable electronic device. The temperature profile is determined in accordance with an output of an internal temperature sensing circuit in the battery pack. If the temperature profile is determined to be atypical, an indication is provided that the battery pack is an unauthorized battery pack. For example, if the temperature profile does not show an expected temperature rise during a charging operation, a visual indication can be provided. The indication can also trigger the control of charging or discharging operations of the portable electronic device. Charging can be terminated or the device shut down to avoid a potentially catastrophic thermal runaway event. The device can also be operated in a reduced power mode in response to the indication.
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Citations
20 Claims
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1. A method of detecting an unauthorized battery pack in a portable electronic device, comprising:
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monitoring a temperature profile of a battery during an operation of the portable electronic device, the temperature profile determined in accordance with outputs sensed at temperature monitoring terminals of a battery pack containing the battery; and providing an indication that the battery pack is an unauthorized battery pack in response to determining that the temperature profile is inconsistent with predetermined temperature characteristics of an authorized battery pack. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A portable electronic device, comprising:
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a temperature monitoring system to monitor a temperature profile of a battery contained within a battery pack during an operation of the portable electronic device, the temperature profile determined in accordance with outputs sensed at temperature monitoring terminals of the battery pack; functional components including a processor connected to the temperature monitoring system, and a memory for storage of computer-readable program code executable by the processor to provide an indication that the battery pack is an unauthorized battery pack in response to determining that the temperature profile is inconsistent with predetermined temperature characteristics of an authorized battery pack. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A method of controlling charging of a portable electronic device, comprising:
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monitoring a temperature of a battery in a battery pack connected to the portable electronic device during a charging operation; and controlling the charging operation in response to detecting an atypical variation in the temperature when compared to predetermined characteristics of an authorized battery pack. - View Dependent Claims (18, 19, 20)
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Specification