Method to prevent parasitic current drain of a vehicle battery
US10606256B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2018 |
| Grant date | Mar 31, 2020 |
| Priority date | — |
| Expiry date | Jul 6, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T90/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method to prevent parasitic current drain of a vehicle battery includes shutting off the vehicle ignition to initiate a power down sequence of electronic control units, and detecting an excessive current draw condition from the vehicle battery after the vehicle ignition is shut off for a predetermined period of time. After verifying that an excessive current draw condition exists by analyzing data collected from the vehicle, the method continues with powering up the electronic control units on a vehicle communications network and broadcasting a system state equals run, and broadcasting a system state equals off on the vehicle communications network after the electronic control units have reached steady state operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.