Low cost charger circuit with precharge
US9266433B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2012 |
| Grant date | Feb 23, 2016 |
| Priority date | — |
| Expiry date | Apr 7, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T90/14
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A low cost charger circuit with pre-charge functionality can include a DC/DC converter arranged in parallel with a charger device. When used for electrified vehicle applications, the DC/DC converter can be configured to operate during vehicle propulsion, restorable energy storage system (RESS) recharging, and while only the DC/DC converter needs to be energized. A DC/DC converter can be coupled to a first high voltage bus on a load side of a primary contactor, and to a second high voltage bus on an energy side of a primary contactor. A pre-charge circuit can controllably charge a voltage bus and protect a DC/DC converter against high inrush current. An auxiliary contactor can controllably couple a DC/DC converter to a load portion of a high voltage bus. It can also couple a charger thereto. A charger contactor can controllably couple a charger device to an energy portion of a high voltage bus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.