公开(公告)号：US20150138850A1

公开(公告)日：2015-05-21

申请号：US14541849

申请日：2014-11-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Denghai PAN ,  Boning HUANG ,  Lixia ZOU

IPC: H02M1/42 ,  H02M5/458

CPC classification number: H02M1/4208 ,  H02M1/4225 ,  H02M5/4585 ,  H02M7/48 ,  H02M2001/0058 ,  H02M2001/0064 ,  Y02B70/126

Abstract: A power conversion circuit includes: an AC-DC circuit, a direct current-alternating current DC-AC circuit, and a first filter capacitor. The DC-AC circuit includes: a third bridge arm, a fourth bridge arm, a first inductor, a second inductor, a first switch transistor, and a second switch transistor, a second end of the first inductor is connected to a first end of the first switch transistor, a second end of the first switch transistor is connected to the direct current bus, a first end of the second inductor is connected to a connection point of two switch transistors included by the fourth bridge arm, a second end of the second inductor is connected to a first end of the second switch transistor, and a second end of the second switch transistor is connected to the direct current bus.

Abstract translation: 电力转换电路包括：AC-DC电路，直流 - 交流DC-AC电路和第一滤波电容器。 DC-AC电路包括：第三桥臂，第四桥臂，第一电感器，第二电感器，第一开关晶体管和第二开关晶体管，第一电感器的第二端连接到第一电感器的第一端 第一开关晶体管，第一开关晶体管的第二端连接到直流母线，第二电感器的第一端连接到由第四桥臂包括的两个开关晶体管的连接点，第二端 第二电感器连接到第二开关晶体管的第一端，并且第二开关晶体管的第二端连接到直流母线。

公开(公告)号：US20190317153A1

公开(公告)日：2019-10-17

申请号：US16455714

申请日：2019-06-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Denghai PAN ,  Zejie LV ,  Yuanzhong WU

IPC: G01R31/3835 ,  G01R31/36 ,  G01R31/396 ,  H02J7/00

Abstract: A sampling circuit, an equalization circuit, and a system for a single cell in a series battery pack are provided. In the sampling circuit provided in this disclosure, the single cell is isolated from a voltage divider resistor in the bleeder circuit by using the first isolation sampling switch, so as to prevent a drain current of the single cell. In addition, sampling errors in sampling voltages collected by the sampling circuit may be offset during differential calculation.

公开(公告)号：US20150180350A1

公开(公告)日：2015-06-25

申请号：US14575917

申请日：2014-12-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Boning HUANG ,  Yongtao LIANG ,  Wenbin CHEN ,  Denghai PAN

IPC: H02M3/335 ,  H02J9/06 ,  H02J7/00

CPC classification number: H02M3/33507 ,  H02J7/0068 ,  H02J9/06 ,  H02M3/33584 ,  H02M3/33592 ,  H02M3/3382 ,  H02M2001/0058 ,  H02M2007/4815 ,  Y02B70/1433 ,  Y02B70/1441 ,  Y02B70/1475 ,  Y02B70/1491 ,  Y10T307/625

Abstract: The present invention provides a resonant bidirectional converter, an uninterruptible power supply apparatus, and a control method. The resonant bidirectional converter includes: a filter capacitor, three primary side bridge arms, a resonant cavity, three transformers, and three secondary side bridge arms, where two ends of each of the primary side bridge arms are separately connected to two ends of a bus capacitor, each of the primary side bridge arms includes two semiconductor switch that are serially connected in a same direction, and any connection point located between the two semiconductor switch of the primary side bridge arm that are serially connected in the same direction is a first connection point.

Abstract translation: 本发明提供一种谐振双向转换器，不间断电源装置和控制方法。 谐振双向转换器包括：滤波电容器，三个一次侧桥臂，谐振腔，三个变压器和三个次级侧桥臂，其中每个初级侧桥臂的两端分别连接到总线的两端 电容器，每个初级侧桥臂包括沿相同方向串联连接的两个半导体开关，并且位于初级侧桥臂的两个半导体开关之间的任一连接点是沿相同方向串联连接的第一连接 点。