公开(公告)号：US20240290537A1

公开(公告)日：2024-08-29

申请号：US18569201

申请日：2022-10-14

Applicant: HENGDIAN GROUP DMEGC MAGNETICS CO., LTD

Inventor： Yangdong YU ,  Leijie WANG ,  Quan ZHU ,  Jianyu CHEN ,  Kang YI

IPC: H01F41/02 ,  H01F41/00 ,  H01F41/063

CPC classification number: H01F41/0246 ,  H01F41/005 ,  H01F41/063

Abstract: Provided in the present application are a power inductor and a preparation method therefor. The preparation method comprises the process steps of slurry preparation, slurry casting, coil winding, coil arrangement, slurry pouring, warm-water pressing, curing treatment, UV adhesive film lamination, cutting, etc. A small-size power inductor can be simply and efficiently prepared, the preparation method is particularly suitable for ultrathin inductors, the phenomena of a short circuit, an open circuit, etc., appearing due to the damage to copper wires that is caused by using dry-pressing integral forming technology are avoided, and the problem of a single box body being easily damaged during casting is solved, thereby facilitating industrial applications.

公开(公告)号：US20240055166A1

公开(公告)日：2024-02-15

申请号：US18264577

申请日：2021-06-30

Applicant: HENGDIAN GROUP DMEGC MAGNETICS CO., LTD

Inventor： Quan ZHU ,  Yangdong YU ,  Leijie WANG ,  Kang YI ,  Fei WANG

IPC: H01F1/147

CPC classification number: H01F1/14758 ,  H01F1/14791

Abstract: The present application provides a soft magnetic alloy sheet, a preparation method therefor and a use thereof. The preparation method comprises the following steps: (1) mixing thermosetting resin, thermoplastic resin, a solvent, a curing agent, and soft magnetic alloy powder having insulating coating to obtain casting slurry; and (2) carrying out degassing and casting-drying treatment on the casting slurry in step (1) in sequence to obtain the soft magnetic alloy sheet.

公开(公告)号：US20240363273A1

公开(公告)日：2024-10-31

申请号：US18029100

申请日：2022-05-24

Applicant: HENGDIAN GROUP DMEGC MAGNETICS CO.,LTD.

Inventor： Leijie WANG ,  Yangdong YU ,  Quan ZHU ,  Fei WANG ,  Kang YI

IPC: H01F1/147 ,  B22F1/107 ,  B22F3/22 ,  B22F3/24 ,  B22F9/04 ,  H01F41/02

CPC classification number: H01F1/14791 ,  B22F1/107 ,  B22F3/22 ,  B22F3/24 ,  B22F9/04 ,  H01F1/14766 ,  H01F41/0246 ,  B22F2003/248 ,  B22F2009/043 ,  B22F2301/35 ,  B22F2998/10

Abstract: The present disclosure provides a magnetic composite material composition, a magnetic core for an inductor and a manufacturing method therefor. It includes a magnetically soft alloy, a thermosetting resin, a curing agent, and an organic solvent. The organic solvent contains at least two types of volatile solvents, and a difference between boiling points of the volatile solvents ranges from 100 to 170° C. The magnetically soft alloy and the thermosetting resin may be cured and formed under the action of the curing agent. The magnetic composite material of the above composition has good high-temperature resistance. Different types of the volatile solvents may be successively volatilized rather than rapidly volatilized at one time as the curing reaction undergoes. Therefore, a large amount of pores can be prevented from being produced on the surface and internal of the magnetic composite material composition, thereby enhancing the compactness and relative permeability.

公开(公告)号：US20240363274A1

公开(公告)日：2024-10-31

申请号：US18573946

申请日：2023-03-30

Applicant: HENGDIAN GROUP DMEGC MAGNETICS CO., LTD

Inventor： Leijie WANG ,  Yangdong YU ,  Quan ZHU ,  Jianyu CHEN ,  Kang YI

IPC: H01F1/153 ,  H01F1/33 ,  H01F41/02

CPC classification number: H01F1/15308 ,  H01F1/1535 ,  H01F1/33 ,  H01F41/0246

Abstract: Disclosed are a fully-integrated voltage regulation module inductor magnetic slurry and a preparation method thereof; in parts by mass, the components of the magnetic slurry comprise: 100 parts of a soft magnetic alloy powder, 9-13 parts of a binder and 2.85-4.61 parts of a curing agent; wherein the binder comprises bisphenol F epoxy resin and an aromatic reactive diluent; and the preparation method utilizes mechanical stirring and vacuum defoaming treatment to obtain a magnetic slurry having a suitable viscosity and good high-temperature resistance performance. The preparation method of the present application is simple in operation, has low preparation costs and is suitable for industrial manufacture.