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US 2014/0278170 A1Published application
State of charge (soc) display for rechargeable battery
AssigneeQUALCOMM Incorporated
InventorsPaolo Baruzzi, Georgios K. Paparrizos, Giovanni Garcea
Life of this patent
Estimating the term…
Abstract
An initial SoC curve may be defined that relates system state of charge (SoC) as a function of battery SoC. Endpoints that define the SoC curve may be updated. For example, each time a battery SoC is determined, the SoC curve may be updated. The SoC curve may then be evaluated to produce a system SoC that can be present to the user.
Claims20
A method for presenting state of charge (SoC) of a battery comprising:
- i. storing data, including at least a first endpoint value, representative of an SoC curve that relates a system SoC as a function of a battery SoC;
- ii. receiving a battery voltage measurement;
- iii. receiving a battery current measurement;
- iv. determining a battery SoC value using the battery voltage measurement and the battery current measurement;
- v. generating an updated SoC curve by computing an updated first endpoint value of the SoC curve using a predetermined battery voltage value and a predetermined battery current value;
- vi. evaluating the updated SoC curve using the battery SoC value to produce a corresponding system SoC value;
- vii. displaying the system SoC value;
- and
- repeating steps ii through vii.
6 more elements
A circuit comprising:
- a memory having stored therein data representative of an SoC curve that relates a system SoC as a function of a battery SoC;
- and
- a controller configured to:
- i. receive a battery voltage measurement;
- ii. receive a battery current measurement;
- iii. determine a battery SoC value using the battery voltage measurement and the battery current measurement;
- iv. generate an updated SoC curve by computing an updated first endpoint value of the SoC curve using a predetermined battery voltage value and a predetermined battery current value;
- v. evaluate the updated SoC curve using the battery SoC value to produce a corresponding system SoC value;
- vi. display the system SoC value;
- and
- repeat steps i through vi.
8 more elements
A circuit comprising:
- first means for storing data, including at least a first endpoint value, representative of an SoC curve that relates a system SoC as a function of a battery SoC;
- second means for receiving a battery voltage measurement;
- third means for receiving a battery current measurement;
- fourth means for determining a battery SoC value using the battery voltage measurement and the battery current measurement;
- fifth means for generating an updated SoC curve by computing an updated first endpoint value of the SoC curve using a predetermined battery voltage value and a predetermined battery current value;
- sixth means for evaluating the updated SoC curve using the battery SoC value to produce a corresponding system SoC value;
- seventh means for displaying the system SoC value;
- and
- means for iterating through the second means to the seventh means.
6 more elements
Dependencies are inferred from the claim text.