Power inductor encapsulated through injection molding

    公开(公告)号:US09987777B2

    公开(公告)日:2018-06-05

    申请号:US15706696

    申请日:2017-09-16

    发明人: Zhi Huang

    摘要: The present invention discloses a power inductor encapsulated through injection molding. The power inductor comprises a coil winding, a soft magnetic ferrite middle column inserted in a middle of the coil winding, and a magnetic powder glue for encapsulating the coil winding and the soft magnetic ferrite middle column through injection molding. The power inductor is square and meets L≥W and 2rc>0.4×2W, wherein a section width of the soft magnetic ferrite middle column perpendicular to a height direction of the inductor is 2rc, a length of the power inductor is 2L, and a width of the power inductor is 2W. According to the present invention, a balanced direct-current resistance and a direct-current superposition saturation characteristic can be obtained, and the direct-current resistance is greatly decreased while an excellent direct-current superposition saturation characteristic is ensured.

    Inductor magnetic core and inductor using the same

    公开(公告)号:US11430597B2

    公开(公告)日:2022-08-30

    申请号:US16622686

    申请日:2017-07-14

    IPC分类号: H01F27/24 H01F27/28

    摘要: An inductor magnetic core and an inductor using the same are disclosed. The inductor magnetic core includes a middle column, an upper yoke, a lower yoke, and at least two high magnetically-permeable side columns. The middle column is disposed between a middle part of the upper yoke and a middle part of the lower yoke, a coil is wound the middle column, and a saturation magnetic flux density of the middle column is higher than that of the upper yoke and the lower yoke. The at least two high magnetically-permeable side columns are disposed in interval between the upper yoke and the lower yoke, and two ends of each high magnetically-permeable side column are connected to outer edges of the upper yoke and the lower yoke, respectively. The inductor magnetic core and the inductor of the present invention improves utilization of the yoke, and also provide compact structure and simple production.

    INDUCTOR MAGNETIC CORE AND INDUCTOR USING THE SAME

    公开(公告)号:US20200335252A1

    公开(公告)日:2020-10-22

    申请号:US16622686

    申请日:2017-07-14

    IPC分类号: H01F27/24 H01F27/28

    摘要: An inductor magnetic core and an inductor using the same are disclosed. The inductor magnetic core includes a middle column, an upper yoke, a lower yoke, and at least two high magnetically-permeable side columns. The middle column is disposed between a middle part of the upper yoke and a middle part of the lower yoke, a coil is wound the middle column, and a saturation magnetic flux density of the middle column is higher than that of the upper yoke and the lower yoke. The at least two high magnetically-permeable side columns are disposed in interval between the upper yoke and the lower yoke, and two ends of each high magnetically-permeable side column are connected to outer edges of the upper yoke and the lower yoke, respectively. The inductor magnetic core and the inductor of the present invention improves utilization of the yoke, and also provide compact structure and simple production.

    POWER INDUCTOR ENCAPSULATED THROUGH INJECTION MOLDING

    公开(公告)号:US20180001523A1

    公开(公告)日:2018-01-04

    申请号:US15706696

    申请日:2017-09-16

    发明人: Zhi HUANG

    IPC分类号: B29C45/00 H02J50/10

    摘要: The present invention discloses a power inductor encapsulated through injection molding. The power inductor comprises a coil winding, a soft magnetic ferrite middle column inserted in a middle of the coil winding, and a magnetic powder glue for encapsulating the coil winding and the soft magnetic ferrite middle column through injection molding. The power inductor is square and meets L≧W and 2rc>0.4×2W, wherein a section width of the soft magnetic ferrite middle column perpendicular to a height direction of the inductor is 2rc, a length of the power inductor is 2L, and a width of the power inductor is 2W. According to the present invention, a balanced direct-current resistance and a direct-current superposition saturation characteristic can be obtained, and the direct-current resistance is greatly decreased while an excellent direct-current superposition saturation characteristic is ensured.