Resources Contact Us Home
Power charging assembly and method that includes a low voltage electrical device operable with pulse width modulation (PWM) control

Image Number 9 for United States Patent #8129951.

A power charging assembly and methods are provided to provide a pre-charge low-current state, a steady-state, high-current charging state, and an unconnect state for an electrical load of an electrical propulsion system in a hybrid electrical vehicle (HEV). The power charging assembly includes a positive contactor device, a negative contactor device, and a non-contactor device means. The rate at which that electrical load is pre-charged may be effectively controlled by using a pulse-width modulated (PWM) signal received by the non-contactor device means. A current-only carrying positive or negative contactor may be configured with the non-contactor device means to further prevent electrical arcing of the contacts of the positive and the negative contactor during power charging assembly operation.

  Recently Added Patents
Packaging sleeve
Resin composition, prepreg, resin sheet, metal-clad laminate, printed wiring board, multilayer printed wiring board and semiconductor device
Email certificates
Apparatus and method for transmitting and receiving data
Multi-function wrench for a power tool
Systems and methods for generating a hybrid text string from two or more text strings generated by multiple automated speech recognition systems
Fire detector
  Randomly Featured Patents
Selective response unit
Advertising with mobile messaging
Image communication system
Two-ply inflatable sock
Deactivation roller hydraulic valve lifter
Device promoting the dispersion of fuel when atomized
Electric overvoltage arrester with carbon air gap and gas tube
Dynamic indexing information retrieval or filtering system