System and method of extending useful life of power supply

摘要

A method of internally heating a power supply of an electronic device in reduced temperatures is provided. The method comprises positioning an antenna of the electronic device proximate to the power supply and receiving a “temperature” signal that is a function of a temperature of the power supply. When it is determined that the temperature is within a reduced operating-temperature range, the temperature is elevated and the equivalent series resistance (ESR) of the power supply is correspondingly reduced by actively sending current through the antenna. The “current sending” operation is reduced when the temperature of the portable electronic device is outside the reduced operating-temperature range.

主权项

1. A method of internally heating a power supply of a portable electronic device in reduced temperatures comprising:
positioning an antenna of the portable electronic device proximate to the power supply; receiving a temperature signal from a temperature sensor coupled to the power supply, where the temperature signal is a function of a temperature of the power supply; determining whether the temperature is within a reduced operating-temperature range, wherein the reduced operating-temperature range is defined as a range of 0 degrees Celsius (° C.) to −18° C.; automatically sending a first amount of current through the antenna in response to the temperature being within the reduced operating-temperature range; automatically sending a second amount of current through the antenna in response to the temperature being lower that the reduced operating-temperature range and terminating the sending of current through the antenna in response to determining that a predetermined level of useful life of the power supply is reached.