公开(公告)号：US20220038025A1

公开(公告)日：2022-02-03

申请号：US17481076

申请日：2021-09-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Weiping LIU ,  Yongtao LIANG ,  Chen CHEN

IPC: H02M7/219 ,  H02M7/5387

Abstract: A converter and a power supply system are disclosed, and relate to the power electronics field, to resolve a problem that a sampling circuit in an OBC circuit is relatively complex. The converter includes an alternating current unit, a switching unit, a conversion unit, a direct current unit, and a controller. The alternating current unit includes a U line, a V line, a W line, and an N line. The N line is connected to a ground of the controller, so that the controller can be directly connected to the U line, the V line, and the W line, to collect a voltage of the U line, a voltage of the V line, and a voltage of the W line. This simplifies the sampling circuit.

公开(公告)号：US20210122255A1

公开(公告)日：2021-04-29

申请号：US17139613

申请日：2020-12-31

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yongtao LIANG ,  Weiping LIU ,  Feng SU

IPC: B60L53/22 ,  H02M1/42 ,  H02M3/335

Abstract: A power conversion module, a vehicle-mounted charger, and an electric vehicle may be used in the field of new energy vehicles. The power conversion module includes a power factor correction PFC module and a first direct current-direct current DC-DC converter. A first primary circuit of the first DC-DC converter has a first bridge arm, a second bridge arm, a third bridge arm, and a fourth bridge arm. A first switch is disposed between the first bridge arm and an inductor at an interface of the PFC module, and a second switch is disposed between the third bridge arm and another interface of the PFC module. When the first switch and the second switch are turned on, a secondary circuit of the first DC-DC converter may implement a function of a primary circuit of a second DC-DC converter; the second bridge arm and the fourth bridge arm may implement a function of a secondary circuit of the second DC-DC converter; and the first bridge arm, the third bridge arm, the inductor of the PFC module, and a capacitor of the PFC module may form an inverter module, so as to implement an inverse discharging function.