Voltage estimation for automotive battery charging system control
US11670952B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 18, 2019 |
| Grant date | Jun 6, 2023 |
| Priority date | — |
| Expiry date | Jul 6, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/92
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Techniques for controlling charging of a battery of a vehicle comprise receiving, from a positive (B+) voltage sensor, a B+ voltage signal indicative of a voltage at a B+ terminal of an alternator of the vehicle, receiving, from an intelligent battery sensor (IBS), an IBS voltage signal indicative of a voltage at a positive terminal of the battery, applying high pass and low pass filters to the B+ voltage signal and the IBS voltage signals, respectively, estimating a voltage of the battery using both the filtered B+ voltage signal and the filtered IBS voltage signal, adjusting a target voltage for the battery based on the estimated battery voltage, and controlling charging of the battery using the adjusted target voltage to mitigate overcharging and undercharging of the battery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.