公开(公告)号：US11699957B2

公开(公告)日：2023-07-11

申请号：US17826482

申请日：2022-05-27

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Wei Zhang ,  Zhaoxue Cui ,  Ningbo Feng

IPC: H01F3/14 ,  H02M3/335 ,  B60L50/60 ,  B60R16/033 ,  H02J7/00 ,  H02J7/02 ,  H02M7/219

CPC classification number: H02M3/33573 ,  B60L50/60 ,  B60R16/033 ,  H02J7/0013 ,  H02J7/02 ,  H02M3/33576 ,  H02M7/219 ,  B60L2210/10 ,  H02J2207/20

Abstract: An energy conversion system, an energy conversion method, and a power system. The energy conversion system may include a bridge arm conversion module, a direct current to direct current (DC/DC) conversion module, a motor, a bus capacitor, and a control module. The control module may be configured to control a bridge arm switch action in the bridge arm conversion module, drive the motor based on an alternating current input voltage supplied by a power supply, form a bus voltage at two ends of the bus capacitor, and control the DC/DC conversion module to charge a traction battery and an auxiliary battery based on the bus voltage. The traction battery and the auxiliary battery can be charged while the motor is driven, thereby achieving higher energy conversion efficiency, low costs, and strong applicability.

公开(公告)号：US20240246433A1

公开(公告)日：2024-07-25

申请号：US18605577

申请日：2024-03-14

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Wei Zhang ,  Ningbo Feng ,  Zhaoxue Cui

IPC: B60L53/22 ,  B60H1/32 ,  B60R16/023 ,  H02J7/00 ,  H02J7/02

CPC classification number: B60L53/22 ,  B60R16/023 ,  H02J7/00047 ,  H02J7/02 ,  B60H2001/3292 ,  B60L2210/10 ,  B60L2210/30 ,  B60L2210/40 ,  H02J2207/20

Abstract: A charging and discharging apparatus and a vehicle, to reduce complexity of a structural layout of the vehicle and improve integration of the vehicle. The charging and discharging apparatus includes: an AC/DC conversion circuit configured to convert an input first alternating current into a first direct current; a DC/DC conversion circuit configured to rectify the first direct current to output a second direct current used to charge a power battery and a third direct current used to charge a low-voltage battery; a DC/AC conversion circuit configured to convert a fourth direct current output by the power battery into a second alternating current used to supply power to a power-consuming device; and a controller configured to control output voltages and/or output currents of the AC/DC conversion circuit, the DC/DC conversion circuit, and the DC/AC conversion circuit.

公开(公告)号：US11888417B2

公开(公告)日：2024-01-30

申请号：US17710726

申请日：2022-03-31

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Zhaoxue Cui ,  Wei Zhang ,  Ningbo Feng

IPC: H02P27/04 ,  H02P27/06 ,  H03K3/037

CPC classification number: H02P27/06 ,  H03K3/037

Abstract: An energy conversion apparatus, a motor, a power system, and a vehicle are provided. The energy conversion apparatus may integrate a motor drive function by using a three-phase bridge arm converter and a motor winding, and integrate an alternating current charging function by using a two-phase two-bridge-arm converter and a transformer. In this way, the energy conversion apparatus can integrate the charging function and the motor drive function. When the energy conversion apparatus is installed on an electric vehicle, a vehicle integration level can be increased, a structure layout of the electric vehicle can be simplified, and costs and a volume of the electric vehicle can be reduced.

公开(公告)号：US20230198383A1

公开(公告)日：2023-06-22

申请号：US18173416

申请日：2023-02-23

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Ken Chin ,  Yuanjun Liu ,  Zhixiang Hu ,  Wei Zhang

IPC: H02M1/42 ,  H02M1/44

CPC classification number: H02M1/4233 ,  H02M1/44

Abstract: A high power factor rectifier circuit includes a totem pole power factor correction (PFC) circuit, a sampling resistor, a power suppl a PFC controller, and a filter. The totem pole PFC circuit includes two bridge arm units connected in parallel between a first parallel connection point and a second parallel connection point. One end of the sampling resistor is connected to the first parallel connection point and a first reference ground, and the other end of the sampling resistor is separately connected to a sampling voltage input terminal of the PFC controller and a second reference ground. A grounding terminal of the PFC controller is connected to the first reference ground. A power output terminal of the power supply is connected to a power input terminal of the PFC controller using the filter.

公开(公告)号：US11820244B2

公开(公告)日：2023-11-21

申请号：US17710691

申请日：2022-03-31

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Zhaoxue Cui ,  Wei Zhang ,  Weiping Liu

IPC: B60L53/22 ,  B60L53/24

CPC classification number: B60L53/22 ,  B60L53/24 ,  B60L2210/10 ,  B60L2210/20 ,  B60L2210/30

Abstract: Embodiments of this application provide an energy conversion apparatus, a power system, and a vehicle. The energy conversion apparatus includes a first switch group, a second switch group, a third switch group, a three-phase converter, a motor coil, a bridge arm circuit, and a three-port converter. The energy conversion apparatus is integrated with functions of alternating-current charging, motor driving, and direct-current charging, and can be installed on an electric vehicle to improve vehicle integration, thereby simplifying a structural layout of the electric vehicle, and reducing costs and a volume of the electric vehicle.

公开(公告)号：US20230070930A1

公开(公告)日：2023-03-09

申请号：US17987290

申请日：2022-11-15

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Shida Gu ,  Wei Zhang ,  Yang Cheng ,  Zhaoxue Cui

IPC: B60L53/22 ,  H02J7/06 ,  H02M1/42 ,  H02M3/335 ,  H02M7/219

Abstract: A charging circuit of an on-board charger, where a second end of a first power conversion circuit of the charging circuit is coupled to a first end of a second power conversion circuit, a high-voltage output end of the second power conversion circuit charges a power battery pack of an electric vehicle, and a first low-voltage output end of the second power conversion circuit supplies power to a low-voltage system of the electric vehicle. The first power conversion circuit is configured to, when the electric vehicle is in a charging mode, convert an alternating current input from a first end of the first power conversion circuit into a direct current and transmit the direct current to the first end of the second power conversion circuit.

公开(公告)号：US11962248B2

公开(公告)日：2024-04-16

申请号：US18332903

申请日：2023-06-12

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Wei Zhang ,  Zhaoxue Cui ,  Ningbo Feng

IPC: H02M3/335 ,  B60L50/60 ,  B60R16/033 ,  H02J7/00 ,  H02J7/02 ,  H02M7/219

CPC classification number: H02M3/33573 ,  B60L50/60 ,  B60R16/033 ,  H02J7/0013 ,  H02J7/02 ,  H02M3/33576 ,  H02M7/219 ,  B60L2210/10 ,  H02J2207/20

Abstract: An energy conversion system, an energy conversion method, and a power system. The energy conversion system may include a bridge arm conversion module, a direct current (DC)/DC conversion module, a motor, a bus capacitor, and a control module. The control module may be configured to control a bridge arm switch action in the bridge arm conversion module, drive the motor based on an alternating current input voltage supplied by a power supply, form a bus voltage at two ends of the bus capacitor, and control the DC/DC conversion module to charge a traction battery and an auxiliary battery based on the bus voltage. The traction battery and the auxiliary battery can be charged while the motor is driven, thereby achieving higher energy conversion efficiency, low costs, and strong applicability.