公开(公告)号：US20220219553A1

公开(公告)日：2022-07-14

申请号：US17707716

申请日：2022-03-29

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Dianbo FU ,  Weiping LIU ,  Shaohua WANG

IPC: B60L53/22 ,  H02M1/42

Abstract: An on-board charging apparatus is provided to implement high-power charging. The on-board charging apparatus includes an alternating current (AC) to direct current (DC) conversion circuit, a power factor correction (PFC) circuit, and a direct current to direct current conversion circuit; an alternating current terminal of the AC/DC conversion circuit is connected to an alternating current terminal of the PFC circuit; the AC/DC conversion circuit is configured to: receive a first alternating current voltage at the alternating current terminal of the AC/DC conversion circuit, and convert a first component of the first alternating current voltage into a first direct current voltage; the PFC circuit is configured to convert a second component of the first alternating current voltage into a second direct current voltage; and the DC/DC conversion circuit is configured to: convert the first direct current voltage and the second direct current voltage into a third direct current voltage.

公开(公告)号：US20230268841A1

公开(公告)日：2023-08-24

申请号：US18169396

申请日：2023-02-15

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Ren LIU ,  Weiping LIU ,  Shanchuan SHI

IPC: H02M3/335 ,  H02M1/44 ,  H02J7/06 ,  B60L53/22

CPC classification number: H02M3/3353 ,  H02M3/33561 ,  H02M1/44 ,  H02J7/06 ,  B60L53/22 ,  H02J2207/20 ,  B60L2210/30 ,  B60L2210/10

Abstract: A converting circuit and a charging apparatus and relates to the field of electronic technologies. In the converting circuit, two groups of parallel connected primary-side converting circuits are connected in a one-to-one correspondence with a primary side of a first transformer and a primary side of a second transformer, and two groups of parallel connected secondary-side converting circuits are connected in a one-to-one correspondence with a secondary side of the first transformer and a secondary side of the second transformer, and the two groups of parallel connected primary-side converting circuits or the two groups of parallel connected secondary-side converting circuits include a first input end and a second input end separately connected to a primary side of a third transformer. Therefore, a primary-side converting circuit does not need to be disposed for the third transformer, to effectively reduce circuit complexity and reduce the circuit costs.

公开(公告)号：US20220224225A1

公开(公告)日：2022-07-14

申请号：US17710676

申请日：2022-03-31

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Chen CHEN ,  Bin MA ,  Weiping LIU ,  Zhaoxue CUI

IPC: H02M1/42 ,  H02M1/32

Abstract: This application provides a converter and an on-board charger, to avoid a short-circuit fault of the converter while inhibiting a surge impact. The converter includes: a power factor correction PFC circuit, a surge protection circuit, and a switch circuit. The PFC circuit is configured to: convert a first component of a first alternating current received by an alternating current terminal of the PFC circuit into a first direct current, and output the first direct current through a direct current terminal of the PFC circuit; and convert a second direct current received by the direct current terminal of the PFC circuit into a second alternating current, and output the second alternating current through the alternating current terminal of the PFC circuit.

公开(公告)号：US20220219554A1

公开(公告)日：2022-07-14

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

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.