公开(公告)号：US20170330662A1

公开(公告)日：2017-11-16

申请号：US15525287

申请日：2015-06-04

Applicant: POCO Holding Co., Ltd.

Inventor： Xiongzhi GUO ,  Qiang XIAO ,  Jialin RUAN ,  Jun QIU ,  Zhida LIU ,  Tao LUO ,  Yunfan ZHANG

IPC: H01F1/22 ,  C08K3/10 ,  C08K3/34 ,  H01F41/02 ,  H01F27/255

CPC classification number: H01F1/22 ,  C08G77/14 ,  C08K3/10 ,  C08K3/34 ,  C08K2201/01 ,  C08L83/06 ,  H01F1/26 ,  H01F27/255 ,  H01F41/0246 ,  C08K5/548 ,  C08K3/11

Abstract: Disclosed is a novel high-density magnetic composite material for an inductor. The material is composed of 6-12% of high-temperature resin glue and 88-94% of magnetic powder body in percentage by weight. An integrated inductor magnetic core is simply prepared by means of the magnetic composite material of the disclosure without a large press, thus saving the device investment. The mold loss in a pressing process is reduced, and the production cost is reduced. The operation is simple, a magnet of a complex shape can be produced, and an oversized magnet can be produced. A closed magnetic circuit is formed, and the EMI effect is good. The magnetic composite material of the disclosure enables the density of a solidified magnet to be high under the action of special high-temperature resin glue, it can be guaranteed that the density is 5.5-6.2 g/cm3, the sensitive quality value for preparing an inductor is high, and the initial permeability can be 14μ or above. The magnetic composite material of the disclosure can bear a higher temperature, and can work at the temperature of 180° C. The magnetic composite material of the disclosure is high in utilization rate, low in scrap rate and low in dust rate, and meets the requirement for environmental protection.

公开(公告)号：US20170345540A1

公开(公告)日：2017-11-30

申请号：US15525285

申请日：2015-06-05

Applicant: POCO Holding Co., Ltd.

Inventor： Xiongzhi GUO ,  Qiang XIAO ,  Jialin RUAN ,  Jun QIU ,  Zhida LIU ,  Tao LUO ,  Yunfan ZHANG

IPC: H01F17/04 ,  H01F41/04 ,  H01F41/076 ,  H01F7/02 ,  H01F1/057

CPC classification number: H01F17/04 ,  H01F1/0576 ,  H01F1/14758 ,  H01F1/14791 ,  H01F1/26 ,  H01F7/0221 ,  H01F27/022 ,  H01F27/255 ,  H01F41/005 ,  H01F41/0246 ,  H01F41/046 ,  H01F41/076

Abstract: Provided is a method for manufacturing a high-density integrally-molded induct comprising the following steps: (1) winding an enameled wire coil to be spiral; (2) mechanically pressing first ferromagnetic powder into a magnetic core; (3) mounting the magnetic core into a. hollow cavity of the enameled wire coil; (4) mounting the enameled wire coil provided with the magnetic core into an injection mold; (5) uniformly mixing and stirring resin glue, a coupling agent and an accelerant, to obtain high-temperature resin glue; (6) uniformly stirring second ferromagnetic powder and the high-temperature resin glue, to obtain a magnetic composite material; (7) injecting the magnetic composite material into a mold cavity of the injection mold for molding, and solidifying the magnetic composite material to obtain an outer magnet; and (8) cooling and de-molding the outer magnet, to obtain a molded inductor. The inductor obtained using the above method is small in size, high in density, high in relative permeability, better in heat dissipation, and lone in service life. The inductor is simply manufactured using an integral molding method, thus reducing the production cost.