Battery fuel gauges sharing current information between multiple battery chargers
First Claim
Patent Images
1. A fuel gauge system comprising:
- two or more battery chargers, each of the two or more battery charges being on different integrated circuits (ICs), each of the two or more battery charges being coupled in parallel to a battery for charging the battery, each of the two or more battery chargers generating a current signal indicative of current generated by said each of the two or more battery chargers into the battery; and
a fuel gauge located within one of the two or more battery chargers, the fuel gauge being coupled to receive the current signal from each of the two or more battery chargers and configured to determine total battery current in response to each of the current signals and current discharged by the battery.
1 Assignment
0 Petitions
Accused Products
Abstract
In one embodiment, a fuel gauge system is described that comprises two or more battery chargers on different integrated circuits (ICs) coupled in parallel to a battery for charging the battery. Each battery charger IC generates a current signal indicative of current generated by said each battery charger IC into the same battery. A fuel gauge is responsible for accurately reporting the battery state of charge, based on a combination of voltage, current, and temperature information.
11 Citations
20 Claims
-
1. A fuel gauge system comprising:
-
two or more battery chargers, each of the two or more battery charges being on different integrated circuits (ICs), each of the two or more battery charges being coupled in parallel to a battery for charging the battery, each of the two or more battery chargers generating a current signal indicative of current generated by said each of the two or more battery chargers into the battery; and a fuel gauge located within one of the two or more battery chargers, the fuel gauge being coupled to receive the current signal from each of the two or more battery chargers and configured to determine total battery current in response to each of the current signals and current discharged by the battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A fuel gauge system comprising:
-
means for coupling two or more battery chargers on different integrated circuits (ICs) in parallel to a battery for charging the battery, each of the battery chargers generating a current signal indicative of current generated by said each battery charger into the battery; and means provided in one of the integrated circuits for receiving the current signal from each of the two or more battery chargers and for determining total charging current in response to the current signals from each of the battery chargers and current discharged from the battery. - View Dependent Claims (10, 11, 12, 13)
-
-
14. A method comprising:
-
receiving, from each of two or more battery chargers on different integrated circuits (ICs) coupled in parallel to a battery for charging the battery, a current signal indicative of current generated by each said battery charger IC into the same battery, the current signal from each of the two or more battery charges being received into one of the two or more battery chargers; and determining total charging current in response to the current signals from each of the battery chargers and current discharged from the battery. - View Dependent Claims (15, 16, 17, 18, 19, 20)
-
Specification