BATTERY LIFE ESTIMATION
First Claim
Patent Images
1. A method of estimating battery lifetime, the method comprising:
- monitoring a charge characteristic of a battery during a first time period;
monitoring an operating condition of the battery;
determining a first battery life value for the first time period based on the operating condition of the battery, the charge characteristic, and a duration of the first time period;
determining an overall battery life value using the first battery life value and a second battery life value for a second time period; and
estimating a remaining battery lifetime for the battery based on the overall battery life value.
2 Assignments
0 Petitions
Accused Products
Abstract
A method of estimating battery lifetime includes monitoring a charge characteristic of a battery during a first time period, monitoring an operating condition of the battery, determining a first battery life value for the first time period based on the operating condition of the battery, the charge characteristic, and a duration of the first time period, determining an overall battery life value using the first battery life value and a second battery life value for a second time period, and estimating a remaining battery lifetime for the battery based on the overall battery life value.
-
Citations
21 Claims
-
1. A method of estimating battery lifetime, the method comprising:
-
monitoring a charge characteristic of a battery during a first time period; monitoring an operating condition of the battery; determining a first battery life value for the first time period based on the operating condition of the battery, the charge characteristic, and a duration of the first time period; determining an overall battery life value using the first battery life value and a second battery life value for a second time period; and estimating a remaining battery lifetime for the battery based on the overall battery life value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. An apparatus for estimating battery lifetime, the apparatus comprising:
-
a battery monitor configured to monitor a charge characteristic of a battery during a first time period; a life value module coupled to the battery monitor and configured to monitor an operating condition of the battery, determine a first battery life value for the first time period based on the operating condition of the battery, the charge characteristic, and a duration of the first time period, and determine an overall battery life value using the first battery life value and a second battery life value for a second time period; and a remaining life module coupled to the life value module and configured to estimate a remaining battery lifetime for the battery based on the overall battery life value. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
-
-
21. An apparatus for estimating battery lifetime, the apparatus comprising:
-
a battery monitor configured to monitor a float voltage applied to a battery during a first time period and monitor a charge characteristic of the battery; a float life value module coupled to the battery monitor and configured to monitor an operating condition of the battery, and determine a first float life contribution based on the operating condition of the battery, the float voltage, and a duration of the first time period, and determine an overall float life value using the first float life contribution and a second float life contribution for a second time period; a cycle life value module coupled to the battery monitor and configure to determine, for a third time period, a rate and/or depth of discharge of the battery, determine an estimated number of discharge cycles based on the discharge rate and/or the depth of discharge, determine a first cycle life contribution for the first time period based on the estimated number of discharge cycles, and determine an overall cycle life value using the first cycle life contribution and a second cycle life contribution for a fourth time period; and a remaining life module coupled to the float life value module and the cycle life value module and configured to estimate a remaining battery lifetime for the battery based on the overall float life value and the overall cycle life value.
-
Specification