公开(公告)号：US20210070185A1

公开(公告)日：2021-03-11

申请号：US16561274

申请日：2019-09-05

申请人： Hong Kong Applied Science and Technology Research Institute Company, Limited

发明人： Xuechao LIU ,  Kin Lap WONG ,  Qingchun LI ,  Bin XIE ,  Danting XU

IPC分类号： B60L53/22 ,  B60L53/14 ,  B60L53/51

摘要： A smart power hub has an AC port, a first DC port to a car battery, a second DC port to DC devices such as car instruments, and a third DC port to solar panels or another smart power hub. An AC bi-directional converter has six transistors in a B6 configuration to convert three-phase AC, acting as an interleaved totem-pole Power-Factor-Corrector for one-phase AC. A switch connects the DC bi-directional converter with either the AC bi-directional converter or the solar panels on the third DC port. A link capacitor has a DC link voltage that rises during battery charging. A DC bi-directional converter has a transformer, a primary bridge connected to the DC link voltage, and a secondary bridge of transistors connected to the first DC port. Auxiliary windings in the transformer drive a rectifier to the second DC port to power on-board DC devices. Solar DC charges the battery without AC conversion.