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
Electrophoretic element and display device
Statistical information collection from one or more device(s) in storage communication with a computing platform
Drive apparatus
Towel clip
Memory device, test operation method thereof, and system including the same
Embedded bonding pad for image sensors
  Randomly Featured Patents
Motorcycle frame
Percussion-sensitive thermostable pyrotechnic compound
Method of producing interlocking elements for slide fasteners
Color deepening agent
Natural red coloring prepared from wheat and barley substrates
Melamine fiber-containing fabrics with improved comfort
Vacuum bag probe
Device for delivering drug to certain pH environments
Railroad hopper car outlet gate end tube seal
Control device for image input apparatus