System and method for determining a battery condition
AssigneeZitara Technologies, Inc.
InventorsEvan Murphy, Patrick Herring, Daniel Vickery, Elizabeth Goldberg, Jacqueline Maslyn, Matthew Bohan, Shyam Srinivasan, Dustin Summy, Zachary Gima, Brian Goodall, Mark Tobenkin
Life of this patent
Estimating the term…
Abstract
A system and method for determining whether a battery is operating in an anomalous condition can include or be configured to measure sensor data, estimate a local property of the battery using on the sensor data, and classify whether the battery is operating in the anomalous condition based on the local property.
Claims20
A method for determining whether a battery is experiencing a thermal disconnection comprising:
- at each of a plurality of times, measuring a temperature proximal the battery;
- for each temperature, estimating a local temperature of a battery cell of the battery;
- performing a statistical test on the plurality of local temperatures to determine whether the battery is experiencing the thermal disconnection.
A method for determining whether a battery is experiencing a thermal anomaly comprising:
- at each of a plurality of times, measuring a temperature proximal the battery;
- for each temperature, estimating a local temperature of a battery cell of the battery;
- performing a statistical test on the plurality of local temperatures to determine whether the battery is experiencing the thermal anomaly.
A system for detecting anomalous thermal behavior in a battery comprising:
- a thermometer configured to measure a temperature dataset associated with the battery;
- a state estimator operable to determine a local battery cell temperature of the battery using the temperature dataset;
- a classifier configured to classify whether the battery is experiencing anomalous thermal behavior based on the determined local battery cell temperature, wherein the classifier is operable in:
- a thermal disconnection mode wherein the classifier is operable to classify the anomalous thermal behaviour as a thermal disconnection using a thermal resistance dataset derived from jump changes in the local battery cell temperature exceeding a threshold jump change;
- and
- an anomalous temperature mode wherein the classifier is operable to classify the anomalous thermal behavior based on steady state readings of the local battery cell temperature.
Dependencies are inferred from the claim text.