METHOD AND SYSTEM FOR TRACKING BATTERY STATE-OF-HEALTH
First Claim
1. A method for determining battery state of health, comprising:
- receiving a battery that is substantially uncharged;
charging the battery with a substantially constant charge current;
determining a time duration of said charging the battery with the substantially constant charge current; and
calculating a state of health of the battery based upon the determined time duration and the constant charge current.
6 Assignments
0 Petitions
Accused Products
Abstract
Methods, systems, and apparatuses for determining battery state of health are provided. A battery that is substantially uncharged is charged with a substantially constant charge current. A time duration of the charging of the battery with the substantially constant charge current is determined. A state of health of the battery is estimated based upon the determined time duration and the constant charge current. The state of health of the battery may be calculated by multiplying the determined time duration with a value of the constant charge current to determine a total accumulated charge, and applying a predetermined factor to the accumulated charge to determine the state of health. The predetermined factor is a fixed percentage of the total charge capacity of the battery that corresponds to the battery type.
-
Citations
18 Claims
-
1. A method for determining battery state of health, comprising:
-
receiving a battery that is substantially uncharged; charging the battery with a substantially constant charge current; determining a time duration of said charging the battery with the substantially constant charge current; and calculating a state of health of the battery based upon the determined time duration and the constant charge current. - View Dependent Claims (2, 3, 4, 5, 6, 12)
-
-
7. A system for determining battery health, comprising:
-
a battery charger configured to charge a battery from a substantially uncharged state with a substantially constant charge current; a charge timer configured to determine a time duration of charging the battery by the battery charger from the substantially uncharged state with the substantially constant charge current; and a battery state of health calculator configured to calculate a state of health of the battery based upon the determined time duration and the constant charge current. - View Dependent Claims (8, 9, 10, 11)
-
-
13. A battery-powered electrical device, comprising:
-
a battery monitor that includes a battery charger, a charge timer, and a battery state of health calculator; and a battery port configured to interface the battery with the device; wherein the battery charger is configured to charge the interfaced battery from a substantially uncharged state with a substantially constant charge current; wherein the charge timer is configured to determine a time duration of charging the battery by the battery charger from the substantially uncharged state with the substantially constant charge current; and wherein the battery state of health calculator is configured to calculate a state of health of the battery based upon the determined time duration and the constant charge current. - View Dependent Claims (14, 15, 16, 17, 18)
-
Specification