System and method of battery capacity estimation
First Claim
Patent Images
1. A method comprising:
- measuring an operating parameter of a battery configured to power a mobile device;
accessing a profile table, that relates battery profile values to corresponding operating parameter values, to translate the measured operating parameter into an equivalent series resistance (ESR) value of the battery using the profile table; and
determining the capacity of the battery based on the ESR value;
the measuring, accessing and determining steps being performed by the mobile device.
4 Assignments
0 Petitions
Accused Products
Abstract
A method includes measuring an operating parameter of a battery of a mobile device. The measured operating parameter is translated into an equivalent series resistance (ESR) value. The ESR value is adjusted by a correction factor to generate a corrected ESR value. The capacity of the battery is determined based on the corrected ESR value. The correction factor is automatically calibrated based on the measured operating parameter.
17 Citations
11 Claims
-
1. A method comprising:
-
measuring an operating parameter of a battery configured to power a mobile device; accessing a profile table, that relates battery profile values to corresponding operating parameter values, to translate the measured operating parameter into an equivalent series resistance (ESR) value of the battery using the profile table; and determining the capacity of the battery based on the ESR value; the measuring, accessing and determining steps being performed by the mobile device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A mobile device comprising:
-
a memory device; a battery configured to power the mobile device; a profile table stored in the memory device that relates battery profile values to corresponding operating parameter values; a sensor circuit configured to measure an operating parameter of the battery; and a battery capacity estimation program configured to access the profile table to translate the measured operating parameter into an equivalent series resistance (ESR) value of the battery using the profile table, and to determine the capacity of the battery based on the ESR value.
-
Specification