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US 10,520,553 B2Granted
Methods and system for a battery
AssigneeSemiconductor Components Industries, LLC
InventorYoshinobu Nishiyama
Life of this patent
Estimating the term…
Abstract
Various embodiments of the present technology may include methods and system for a battery. According to various embodiments, the methods and system may operate to establish continuity between the RSOC values that are computed before and after a change in the charge mode of the battery. During a constant voltage charge mode, the methods and apparatus further estimate the RSOC value according to a linear relationship between the charging current and the RSOC.
Claims20
A battery system, comprising:
- a fuel gauge circuit coupled to a battery and adapted to:
- measure a current of the battery;
- store the measured current of the battery;
- store a previously-computed RSOC value of the battery;
- store a predetermined design capacity of the battery;
- compute a first RSOC value based on at least one of:
- the measured current, the previously-computed RSOC value, and a terminal current;
- compute a second RSOC value based on the design capacity;
- and
- selectively output one of the first RSOC value and the second RSOC value to maintain continuity among consecutively-output RSOC values.
7 more elements
A method for reporting an RSOC of a battery, comprising:
- determining a charge mode of the battery, wherein the charge mode is one of a constant voltage charge mode and a constant current charge mode;
- computing a plurality of first RSOC values according to a linear function based on at least one of:
- a terminal current of the battery, a measured current of the battery, and a previously-computed RSOC value, to provide linearly decreasing consecutively-computed first RSOC values;
- computing a second RSOC value according to a coulomb counting method;
- and
- selectively outputting one of the first and second RSOC values to a display unit based on the charge mode, comprising:
- outputting the plurality of first RSOC values if as long as the battery is in the constant voltage charge mode;
- and
- outputting the second RSOC value if as long as the battery is in the constant current charge mode.
6 more elements
A battery system, comprising:
- a current sensor coupled to a battery and adapted to measure a current of the battery;
- a battery charger coupled to the battery and adapted to generate a charge mode signal according to a charge mode of the battery;
- and
- a fuel gauge circuit coupled to the battery charger, and comprising:
- a memory adapted to store the measured current of the battery;
- a first RSOC calculation circuit coupled to the memory and adapted to compute a first RSOC value according to the measured current of the battery;
- a second RSOC calculation circuit coupled to the memory and adapted to compute a second RSOC value according to the measured current of the battery;
- and
- a multiplexer connected to:
- an output terminal of the first RSOC calculation circuit;
- an output terminal of the second RSOC calculation circuit, and an output terminal of the battery charger;
- wherein the multiplexer selectively outputs one of the first RSOC value and the second RSOC value according to the charge mode signal.
9 more elements
Dependencies are inferred from the claim text.