Patent ID: 8525474
Filing Date: 2013-09-03
Classification: B60L,Y02T

Abstract:
1. A charge-or-start system applied in an electric vehicle, comprising: a charge-or-start device coupled to an external power source; an on-car electric source coupled to the charge-or-start device; a battery unit coupled to the charge-or-start device for storing and providing power; a first magnetic contactor controlled by the charge-or-start device for conducting or breaking a first current flow between the external power source and the battery unit; a second magnetic contactor controlled by the charge-or-start device for conducting or breaking a second current flow between the on-car electric source and the battery unit; an insulated gate bipolar transistor (IGBT) module for receiving and conducting the first and the second current flows; a filter coupled to the IGBT module for filtering voltage of the first and the second current flows; a bi-direction DC-DC converter for bucking/boosting voltage of the first and the second current flows; a charge-or-start controller for detecting an output voltage of the IGBT module and an output voltage of the bi-direction DC-DC converter to control the IGBT module and the bi-direction DC-DC converter for controlling paths of the first current flow and the second current flow; and a first and a second current sensor for respectively sensing a current flowing between the second magnetic contactor and the IGBT module; wherein: in charge mode, under control of the charge-or-start device, one of the external power source and the on-car electric source provides power to the battery unit for charging the battery unit through the charge-or-start device; in start mode, under control of the charge-or-start device, the battery unit provides power to the on-car electric source through the charge-or-start device, for activating the on-car electric source.