Electric vehicle onboard charger and onboard DC/DC integrated integration system

• Main Authors: FANG YONGSHOU, LIU DONGMEI, YANG HANGXU
• Format: Patent
• Language: English
• Published: 15.04.2015
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

The utility model relates to the field of electric vehicles. An electric vehicle onboard charger and onboard DC/DC integrated integration system comprises a charging gun, a CC confirmation wire, a CAN communication wire, a battery management system (BMS), an integrated controller, a 12V accumulator, a relay I, a relay II, a high-voltage power accumulator, a housing and a heat radiation system. The integrated controller is mainly composed of a bridge rectifier, the relay I, a switch MOS power transistor and a switch power transformer. The charging gun, the bridge rectifier, the relay I, the switch MOS power transistor and the switch power transformer are sequentially connected. One end of the battery management system (BMS) is connected with the charging gun through the CC confirmation wire, while the other end of the battery management system (BMS) is connected with the relay II and feeds back a CC confirmation signal directly to the integrated controller through the CAN communication wire. Both electrodes of the high-voltage power accumulator are connected with an output end of the relay I, and are also connected with an output end of the switch power transformer through a switch K2. Both electrodes of the 12V accumulator are directly connected with the other output end of the switch power transformer.