Battery charger for electrical vehicle
First Claim
1. In an electric vehicle having a propulsion battery, a propulsion motor, a power converter for controlling power from the battery to the motor, the converter having a magnetic element with a first winding interposed between the output of the converter and the motor for delivering power from the battery through the converter to the motor, the improvement comprising, a primary winding on said magnetic element, means coupling AC power to the primary winding for charging the battery, controlled rectifier means connected between the first winding of the magnetic element and the battery, and gate means for triggering the controlled rectifier means for rectifying the AC power and supplying said rectified power through said first winding to the battery for charging same.
1 Assignment
0 Petitions
Accused Products
Abstract
An on-board charger for an electric vehicle propulsion system which provides high charging capacity with minimum weight addition by sharing major elements of the electric vehicle power converter. In the preferred construction, the vehicle power converter has a magnetic element, an interphase transformer, connecting the output of the converter to the motor load. A primary winding is added to the interphase transformer for connection to a commercial AC power source. A phase controlled bridge also connected to the interphase transformer rectifies the AC power for charging the battery.
-
Citations
9 Claims
-
1. In an electric vehicle having a propulsion battery, a propulsion motor, a power converter for controlling power from the battery to the motor, the converter having a magnetic element with a first winding interposed between the output of the converter and the motor for delivering power from the battery through the converter to the motor, the improvement comprising, a primary winding on said magnetic element, means coupling AC power to the primary winding for charging the battery, controlled rectifier means connected between the first winding of the magnetic element and the battery, and gate means for triggering the controlled rectifier means for rectifying the AC power and supplying said rectified power through said first winding to the battery for charging same.
- 2. In an electric vehicle having a propulsion battery, a propulsion motor, a power converter for controlling power from the battery to the motor, the converter comprising a chopper with at least two legs and an interphase transformer having windings for combining the outputs of said legs and applying the combined outputs to the motor, the improvement comprising a primary winding magnetically coupled to the windings of said interphase transformer, a switching regulator connected between said windings of the interphase transformer and the battery, means coupling AC power to said primary winding, and means switching the switching regulator in controlled fashion to rectify the AC power and supply said rectified power through said windings of the interphase transformer to the battery for charging same.
Specification