Methods, systems, and devices for monitoring state-of-health of a battery system operating over an extended temperature range
US10712396B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 2019 |
| Grant date | Jul 14, 2020 |
| Priority date | — |
| Expiry date | May 14, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/048
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed herein are methods, systems, and devices for determining a state-of-health (SOH) of battery systems over extended temperatures. According to one embodiment, a computer implemented method includes (1) receiving measured temperature data and measured ohmic value data associated with a battery cell; (2) determining an estimated battery cell electrolyte temperature based on the measured temperature data; (3) determining a normalized ohmic value based on the measured ohmic value data and the estimated battery cell electrolyte temperature, wherein the normalized ohmic value is related to a normalized temperature; and (4) transmitting, to at least one of a graphical user interface (GUI) and a battery log, an indication of an SOH of the battery cell based upon the normalized ohmic value being greater than a normalized maximum ohmic value, wherein the normalized maximum ohmic value is indicative of an abnormal SOH of the battery cell for the normalized temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.