公开(公告)号：US11527354B2

公开(公告)日：2022-12-13

申请号：US17588202

申请日：2022-01-28

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Yongtao Liang ,  Weiping Liu ,  Yanjun Zhi

IPC: H01F27/38 ,  H02M1/00 ,  H01F27/34 ,  H02M3/28

Abstract: This application provides a magnetic integrated device, a power conversion circuit, a charger, and an electric vehicle, and pertains to the field of power electronics technologies. The magnetic integrated device includes a magnetic core, a first transformer winding, and a second transformer winding, where the first transformer winding and the second transformer winding are separated and wound, and a first air gap is formed at separation. A magnetic line may pass through the first air gap to form leakage inductance, and the leakage inductance may be equivalent to resonant inductance in the power conversion circuit. Therefore, there is no need to separately dispose an inductor winding in the magnetic integrated device. This effectively reduces a volume and a weight of the magnetic integrated device. In addition, the power conversion circuit that uses the magnetic integrated device also has a relatively small volume and relatively high-power density.

公开(公告)号：US20230187114A1

公开(公告)日：2023-06-15

申请号：US18166010

申请日：2023-02-08

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Xiaoqing Hu ,  Yanjun Zhi ,  Xiaming Jing

IPC: H01F27/255 ,  H01F27/28 ,  H01F41/02 ,  H01F27/30 ,  H01F27/32 ,  H01F27/06

CPC classification number: H01F27/255 ,  H01F27/2847 ,  H01F41/0246 ,  H01F27/306 ,  H01F27/324 ,  H01F27/06 ,  H01F2027/065

Abstract: A power inductor includes a winding and a metal magnetic powder core. The metal magnetic powder core is configured to support the winding, and the winding uses a metal conductive sheet. During assembly, the metal magnetic powder core is integrated with the winding through pressing, the metal magnetic powder core wraps the winding, and the metal magnetic powder core is insulated from the winding. The winding has a first pin and a second pin, and the first pin and the second pin are exposed on different surfaces of the metal magnetic powder core. Pins are separately disposed on two different surfaces of the power inductor. In addition, the winding is formed by integrally pressing the metal conductive sheet and the metal magnetic powder core.

公开(公告)号：US20220157516A1

公开(公告)日：2022-05-19

申请号：US17588202

申请日：2022-01-28

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Yongtao Liang ,  Weiping Liu ,  Yanjun Zhi

IPC: H01F27/38 ,  H01F27/34 ,  H02M1/00

Abstract: This application provides a magnetic integrated device, a power conversion circuit, a charger, and an electric vehicle, and pertains to the field of power electronics technologies. The magnetic integrated device includes a magnetic core, a first transformer winding, and a second transformer winding, where the first transformer winding and the second transformer winding are separated and wound, and a first air gap is formed at separation. A magnetic line may pass through the first air gap to form leakage inductance, and the leakage inductance may be equivalent to resonant inductance in the power conversion circuit. Therefore, there is no need to separately dispose an inductor winding in the magnetic integrated device. This effectively reduces a volume and a weight of the magnetic integrated device. In addition, the power conversion circuit that uses the magnetic integrated device also has a relatively small volume and relatively high-power density.