Interconnect resistance compensation for cell voltage measurements under high current conditions
US12253573B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2021 |
| Grant date | Mar 18, 2025 |
| Priority date | — |
| Expiry date | Nov 6, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed herein are batteries, battery packs, systems, and methods for calculating and/or determining, and then compensating for, the voltage loss due to interconnect resistance (IR) between cells of a battery pack. A program may calculate and/or determine the cell IR between each of the cells in a battery pack, which is referred to herein as the “calibration value,” and may be determined during the initial battery pack design phase. A program may then multiply the cell IR or “calibration value” by the measured pack current to compensate for the measured cell voltage. The cell IR or “calibration value” may be used during manufacture of the battery pack to compensate for the interconnect resistance (IR) between cells. This compensation for voltage loss due to IR between cells will increase accuracy of the BMS and improve overall battery pack performance, without increasing material costs or size of the battery pack.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.