Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Detachably integrated battery charger for mobile cell phones and like devices
Nickel-cobalt-manganese multi-element lithium ion battery cathode material with dopants and its methods of preparation
Discharge lamp lighting circuit
Paper product with surface pattern
Power supply input voltage detection circuit
Display systems with touch screens
Semiconductor device having germanium active layer with underlying parasitic leakage barrier layer
  Randomly Featured Patents
Liquid crystal display device
Continuous process for lining pipes
Air disinfection unit
Information processor, TV system, control method and program
Systems and methods for reviewing informational content in a vehicle
Treating chlamydia infections using spectinomycin analogs
Transforming growth factor .beta. crystals
System combining proton beam irradiation and magnetic resonance imaging
Universal verification and validation system and method of computer-aided software quality assurance and testing
Polyamidoamine curing agents based on mixtures of fatty and aromatic carboxylic acids