System for determining an accurate ohmic resistance value associated with a battery cell
US10502791B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2018 |
| Grant date | Dec 10, 2019 |
| Priority date | — |
| Expiry date | Sep 4, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/3842
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for determining an accurate ohmic resistance value associated with a battery cell is provided. The system includes a microprocessor and a memory device. The memory device has a 3-D interpolation table with first, second, third, fourth, fifth, sixth, seventh, and eighth records, each having a respective SOC value, a respective temperature value, a respective current value, and a respective ohmic resistance value. The microprocessor performs a 3-D interpolation calculation based on a first SOC value, a first temperature value, and a first current value and each respective SOC value, each respective temperature value, and each respective current value in the records to determine the accurate ohmic resistance value associated with the battery cell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.