公开(公告)号：EP4407855A1

公开(公告)日：2024-07-31

申请号：EP23875914.6

申请日：2023-12-04

申请人： Shenzhen Uugreenpower Co., Ltd

发明人： GUO, Xiaoliang ,  BAI, Jianguo ,  WAN, Zhenghai ,  DENG, Likuan

IPC分类号： H02M3/335 ,  H02M3/28 ,  H02J7/00 ,  B60L53/31

CPC分类号： Y02T10/70 ,  Y02T10/7072 ,  Y02T90/14 ,  Y02B70/10

摘要： A power expanding apparatus for three-phase LLC circuit is disclosed, which includes a first and a second full-bridge switching network, a first and a second resonant network, a first and a second transformer network, a first and a second rectifying network. A primary side of the first transformer network is connected with an input voltage sequentially through the first resonant network and the first full-bridge switching network, a secondary side of the first transformer network is connected with a load through the first rectifying network; a primary side of the second transformer network is connected with the input voltage sequentially through the second resonant network and the second full-bridge switching network, and a secondary side of the second transformer network is connected with the load through the second rectifying network. The first and second transformer networks respectively include three transformer units. Secondary sides of any two transformer units in the first transformer network are in star-type connection with a secondary side of any one transformer unit in the second transformer network. This apparatus is easy to manufacture and implement at low cost, expands output power by increasing the output power while achieving a wide-range of output, and solves voltage-sharing and current-sharing problems.