METHODS AND APPARATUS FOR MODELING, MONITORING, ESTIMATING and CONTROLLING POWER CONSUMPTION IN BATTERY-OPERATED DEVICES

• US 20170234931A1
• Filed: 11/25/2016
• Published: 08/17/2017
• Est. Priority Date: 03/11/2009
• Status: Abandoned Application

• Current Assignee: Novatel Wireless, Inc. (Inseego Corp.)
• Original Assignee: Novatel Wireless, Inc. (Inseego Corp.)
• Inventors: Moore, Charles Chapman, Marten, David
• Application Number:
  US15/361,345
• Publication Number:
  US 20170234931A1
• Time in Patent Office: Days
• CPC Class Codes: G01R 31/36 Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
• CPC Class Codes: G01R 31/3648 comprising digital calculation means, e.g. for performing an algorithm
• CPC Class Codes: G01R 31/371 with remote indication, e.g. on external chargers
• CPC Class Codes: G01R 31/392 Determining battery ageing or deterioration, e.g. state of health
• CPC Class Codes: H01M 10/488 Cells or batteries combined with indicating means for external visualization of the condition, e.g. by change of colour or of light density
• CPC Class Codes: H04Q 2209/47 using RFID associated with sensors
• CPC Class Codes: H04Q 9/00 Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A computer-based processing system (e.g., host server) is operable for receiving historical device operation information (power consumption data) collected during operation of the remote battery-operated device in accordance with a first set of operating parameters, including rechargeable battery information (such as the number of charging cycles experienced). The first set of operating parameters enable operation of the battery-operated device in a first operating mode. The processing system calculates an observed battery life for the device based on the received historical power consumption data and a power capacity value representing a power capacity of the battery resident in the device. This observed battery life may be output to a user and used to determine whether the device will meet a predetermined operational life. If not, parameters for the device can be modified and a new projected battery life calculated (simulation), with the new modified parameters controlling power consumption in the device.

Claims

1. A method comprising:

receiving historical power consumption data collected during operation of a battery-operated device in accordance with a first set of operating parameters for operating in a first mode including information indicative of at least one of a number and percent completion of charging cycles experienced by a rechargeable battery;

calculating observed battery usage for the battery-operated device based on the received historical power consumption data and power capacity of the rechargeable battery within the battery-operated device; and

outputting the observed battery usage.

2. The method of claim 1, wherein one or more parameters within the first set of operating parameters are modified to generate a second set of operating parameters that when loaded within memory of the battery-operated device will enable the battery-operated device to operate in accordance with a second operating mode;

processing the second set of operating parameters and the power capacity in the computer-based processing system and calculating a projected battery life for the rechargeable battery when the device operates in accordance with the second operating mode; and

outputting the projected battery life.

3. The method of claim 1, wherein the calculating of the observed battery usage comprises, in part, decrementing a charging cycle counter indicative of the number of charging cycles experienced by the rechargeable battery, the number of charging cycles experienced by the rechargeable battery being determined by monitoring at least one of removal of the rechargeable battery from and replacement of the rechargeable battery within the battery-operated device.

4. The method of claim 3, further comprising associating the rechargeable battery with a radio frequency identification (RFID) tag, and monitoring the at least one of the removal of the rechargeable battery from and the replacement of the of the rechargeable battery via the RFID tag.

5. The method of claim 1, wherein the number of charging cycles experienced by the rechargeable battery is determined by monitoring one of a voltage increase between two pre-defined voltage thresholds, a fuel gauge associated with the rechargeable battery, or a maximum charge threshold.

6. The method of claim 1, wherein the calculating of the observed battery usage further comprises accounting for at least one of operating temperature of the rechargeable battery, chemistry of the rechargeable battery, and memory effect associated with the rechargeable battery.

7. The method of claim 1 further comprising, transmitting a notification indicating a need to recharge the rechargeable battery.

8. The method of claim 7 further comprising, performing the transmitting of the notification upon a determination that the battery-operated device is proximate to a charging station.

9. The method of claim 1 further comprising, periodically transmitting a notification indicating a need to recharge the rechargeable battery, the periodicity of the transmitting being based upon proximity to a charging station.

10. The method of claim 1 further comprising, modifying the calculation of the observed battery usage when the observed battery usage comprises a measured discharge that is a fraction of a full discharge.

11. The method of claim 1 further comprising, determining battery charge associated with the rechargeable battery based on an amount of current being provided to the rechargeable battery by a battery charger.

12. The method of claim 1, wherein the historical power consumption data is, in part, determined by monitoring the amount of time the battery-operated device spends in an operational state, and typical current consumption while in that operational state.

13. The method of claim 1, wherein the historical power consumption data is, in part, determined by monitoring the amount of current consumed by the battery-operated device.

14. The method of claim 1, wherein the historical power consumption data is, in part, determined by monitoring the voltage of the rechargeable battery.

16. The host server of claim 9 further comprising, wherein the processor is further configured to transmit a notification indicating a need to recharge the rechargeable battery.

17. The method of claim 1, wherein the number of charging cycles experienced by the rechargeable battery is determined by monitoring attachment of the rechargeable battery to a charging station.

15. A host server for calculating power consumption in a battery-operated device powered by a rechargeable battery and controlling power consumption, the server comprising:

a communications interface operable for receiving historical power consumption data from the battery-operated device, the historical power consumption data being collected during operation of the battery-operated device in accordance with a first set of operating parameters, and including at least information regarding a number of charging cycles experienced by the rechargeable battery, and;

a processor configured to;

calculate an observed battery life for the device based on the received historical power consumption data and a power capacity value representing a power capacity of the battery within the device, in part, by decrementing a charging cycle counter indicative of the number of charging cycles experienced by the rechargeable battery;

an output device for outputting the observed battery life and one or more parameters of the first set of operating parameters;

an input device for receiving user input to modify one or more parameters within the first set of operating parameters; and

wherein the processor is further configured to;

send, via the communications interface, the one or more modified operating parameters to the battery-operated device, the one or more modified operating parameters enabling subsequent operation in accordance therewith.