Patent application number | Description | Published |
20130158916 | BATTERY FUEL GAUGE - A system for estimating battery state of charge (SoC) includes evaluating a battery model to produce an estimated battery voltage using a previously produced SoC. Current and voltage measurements are combined with the estimated battery voltage to produce a present battery SoC. The battery model may be updated by taking battery measurements when certain conditions occur. | 06-20-2013 |
20140266228 | ACTIVE MEASUREMENT OF BATTERY EQUIVALENT SERIES RESISTANCE - A circuit for measuring the equivalent series resistance (ESR) of a battery includes taking measurements of battery current and battery voltage. A controller may control the taking of the measurements. A load generator may be activated to produce a current pulse to the battery to provide an explicit current transient under certain operating conditions of the battery. | 09-18-2014 |
20140278170 | STATE OF CHARGE (SOC) DISPLAY FOR RECHARGEABLE BATTERY - 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. | 09-18-2014 |