公开(公告)号：US20220363154A1

公开(公告)日：2022-11-17

申请号：US17877519

申请日：2022-07-29

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Yanjun Hu ,  Feng Wen ,  Tianyu Wang

IPC: B60L53/22 ,  B60L53/30

Abstract: A charging apparatus is applied to a new energy vehicle. The new energy vehicle includes a first battery and a second battery. The first battery provides driving power for the new energy vehicle, and the second battery supplies power to a vehicle-mounted load device. The apparatus includes a charging unit and a general-purpose unit. The charging unit includes a DC-DC circuit and a BMS. The general-purpose unit includes a control module, a communication module, and an auxiliary power supply module. The auxiliary power supply module supplies power to the charging unit and the control module. The control module is configured to control the charging unit to provide electric energy of the first battery to the second battery. According to the apparatus provided in this application, a volume and a weight of the charging apparatus can be reduced, a service life of a battery can be prolonged.

公开(公告)号：US20220345046A1

公开(公告)日：2022-10-27

申请号：US17847516

申请日：2022-06-23

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Tianyu Wang ,  Weiping Liu

IPC: H02M3/335 ,  H02M3/00

Abstract: A power converter includes a primary side circuit, a secondary side circuit, a transformer, and a controller. A primary side of the transformer is connected to the primary side circuit, and a secondary side of the transformer is connected to the secondary side circuit. The primary side circuit includes a resonant circuit. The secondary side circuit is configured to supply electric energy to the transformer. The transformer is configured to supply the electric energy to the primary side circuit. The primary side circuit is configured to convert the electric energy. The controller is connected to the secondary side circuit, and is configured to control, in a control cycle, the secondary side circuit to supply the electric energy to the transformer. Duration of the control cycle is greater than or equal to duration of a resonance cycle of the resonant circuit.

公开(公告)号：US11909323B2

公开(公告)日：2024-02-20

申请号：US17847516

申请日：2022-06-23

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Tianyu Wang ,  Weiping Liu

IPC: H02M3/335 ,  H02M3/00

CPC classification number: H02M3/33573 ,  H02M3/01 ,  H02M3/33571 ,  H02M3/33584 ,  H02M3/33592

Abstract: A power converter includes a primary side circuit, a secondary side circuit, a transformer, and a controller. A primary side of the transformer is connected to the primary side circuit, and a secondary side of the transformer is connected to the secondary side circuit. The primary side circuit includes a resonant circuit. The secondary side circuit is configured to supply electric energy to the transformer. The transformer is configured to supply the electric energy to the primary side circuit. The primary side circuit is configured to convert the electric energy. The controller is connected to the secondary side circuit, and is configured to control, in a control cycle, the secondary side circuit to supply the electric energy to the transformer. Duration of the control cycle is greater than or equal to duration of a resonance cycle of the resonant circuit.