Method for determining battery capacity
First Claim
Patent Images
1. A method comprising:
- determining that a battery has entered a transition phase based on the occurrence of a change in direction of current flowing through the battery; and
in response to determining that the battery is in the transition phase, determining a capacity of the battery based on a transition phase battery capacity model of capacity-vs.-voltage.
3 Assignments
0 Petitions
Accused Products
Abstract
A method includes determining that a battery has entered a transition phase based on the occurrence of a change in direction of current flow through the battery. In response to determining that the battery is in the transition phase, a capacity of the battery is determined based on a transition phase battery capacity model of capacity-vs.-voltage.
-
Citations
15 Claims
-
1. A method comprising:
-
determining that a battery has entered a transition phase based on the occurrence of a change in direction of current flowing through the battery; and
in response to determining that the battery is in the transition phase, determining a capacity of the battery based on a transition phase battery capacity model of capacity-vs.-voltage. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A method comprising:
-
monitoring the output voltage of a power source configured to charge a battery;
determining that the battery has entered a transition phase based on sensing an abrupt change in the output voltage; and
in response to determining that the battery is in the transition phase, determining a capacity of the battery based on a transition phase battery capacity model. - View Dependent Claims (7)
-
-
8. A method comprising:
-
determining that a battery has entered a transition phase that is initiated by a change in direction of current through the battery;
in response to determining that the battery is in the transition phase, determining a capacity of the battery based on a transition phase battery capacity model; and
determining that the transition phase has ended based on the lapse of a predetermined time period from the start of the transition phase. - View Dependent Claims (9)
-
-
10. A method comprising:
-
determining that a battery has entered a transition phase initiated by a change in direction of current through the battery;
in response to determining that the battery is in the transition phase, determining a capacity of the battery based on a transition phase battery capacity model; and
determining that the transition phase has ended based on the battery voltage having changed by a predetermined voltage value from the battery voltage at the start of the transition phase. - View Dependent Claims (11)
-
-
12. A method comprising:
-
determining that a battery has entered a transition phase initiated by a change in direction of current through the battery;
measuring a voltage of the battery; and
determining the end of the transition phase based on a transition phase battery capacity model of capacity-vs.-voltage and a non-transition battery capacity model of capacity-vs.-voltage yielding the same capacity value for the measured voltage.
-
-
13. A method comprising:
-
determining a transition phase battery capacity model from both a non-transition battery capacity charge model and a non-transition battery capacity discharge model, all three models defining a battery'"'"'s capacity as a function of its voltage, and the capacity value of the transition phase model for a each given voltage being calculated based on a weighted average of the two capacity values yielded by the two non-transition models for the given voltage; and
using the transition phase model to determine capacity of a battery. - View Dependent Claims (14, 15)
-
Specification