CN-224217326-U - Block inductor

CN224217326UCN 224217326 UCN224217326 UCN 224217326UCN-224217326-U

Abstract

The utility model discloses a block inductor which comprises a magnetic core plate, a magnetic core center pillar, a coil and a heat conducting part, wherein the coil is wound on the periphery of the magnetic core center pillar, the magnetic core plate is respectively arranged at two ends of the magnetic core center pillar and is attached to the end wall of the magnetic core center pillar, the heat conducting part comprises a silica gel sheet and a heat radiating plate, the silica gel sheet is provided with at least two sheets, the two silica gel sheets are respectively arranged on the side walls of the two magnetic core plates, which are far away from each other, the silica gel sheet is attached to and covers one side of the magnetic core plate, which is far away from the magnetic core center pillar, and the heat radiating plate is arranged on one side of the silica gel sheet, which is far away from the magnetic core plate, and is attached to the silica gel sheet. The utility model has the effect of reducing the overall weight of the block inductor while realizing the overall heat dissipation of the block inductor by matching the silica gel sheet with the heat dissipation plate.

Inventors

GAO CHUANGYE
GONG CHANGHONG
Gao Shengjia
LI TULIANG

Assignees

东莞市郡嘉电子科技有限公司

Dates

Publication Date: 20260508
Application Date: 20250718

Claims (6)

1. The block inductor is characterized by comprising a magnetic core plate, a magnetic core center pillar, a coil and a heat conducting part, wherein the coil is wound on the periphery of the magnetic core center pillar, the magnetic core plate is respectively arranged at two ends of the magnetic core center pillar and is attached to the end wall of the magnetic core center pillar, the heat conducting part comprises a silica gel sheet and a heat radiating plate, the silica gel sheet is provided with at least two sheets, the two silica gel sheets are respectively arranged on the side walls of the two magnetic core plates, which are far away from each other, the silica gel sheet is attached to one side of the magnetic core plate, which is far away from the magnetic core center pillar, and the heat radiating plate is arranged on one side of the silica gel sheet, which is far away from the magnetic core plate, and is attached to the silica gel sheet.
2. The bulk inductor of claim 1, wherein the heat conducting part further comprises a silica gel ring, the silica gel ring is sleeved on the periphery of the magnetic core center pillar, the silica gel ring is positioned in a gap between the magnetic core center pillar and the coil, and two ends of the silica gel ring are respectively abutted with the two magnetic core plates.
3. The bulk inductor of claim 2, wherein the silicone ring is disposed to fit over and cover a peripheral wall of the center leg of the core.
4. The bulk inductor of claim 1, wherein two core legs are provided, epoxy plates for isolating the coil from the core plate are arranged at both ends of the core legs, and the epoxy plates are provided with avoidance holes for allowing the ends of the core legs to pass through and abut against the core plate.
5. The bulk inductor of claim 4, wherein the heat spreader plate is an aluminum plate.
6. The bulk inductor of claim 5, wherein said two heat sinks are secured by screw and nut engagement.

Description

Block inductor Technical Field The utility model relates to the field of inductors, in particular to a block inductor. Background Under the background that the performance and the integration level of electronic equipment are continuously improved, the block inductor is used as a core element of a power management circuit, a signal processing circuit and the like, and the packaging technology directly influences the performance and the reliability of products. Currently, an integral filling and sealing scheme for filling aluminum shells into block-shaped inductors and filling heat-conducting glue into the aluminum shells is widely adopted in the industry. Gaps between the inductor and the aluminum shell are filled with heat conduction glue, and heat generated during operation of the inductor is conducted to the surface of the aluminum shell, so that the heat dissipation effect is achieved. From the aspects of cost and process, the filling and sealing process comprises a plurality of procedures such as glue filling and curing, and the like, professional equipment is needed, and process parameters are accurately controlled, so that the production process is complicated, the energy consumption is increased, the manufacturing cost is greatly improved, and the use of the heat-conducting glue and the aluminum shell obviously increases the weight of the product in the aspect of application suitability, so that the formed blocky inductor is large in weight. Disclosure of utility model The utility model provides a block inductor in order to reduce the overall weight of the block inductor. The utility model provides a technical scheme as follows: The utility model provides a cubic inductance, includes magnetic core, magnetic core center pillar, coil and heat conduction portion, the coil winding is in magnetic core center pillar periphery, the magnetic core is located the both ends of magnetic core center pillar respectively and is laminated with the end wall of magnetic core center pillar, the heat conduction portion includes silica gel piece and heating panel, the silica gel piece is equipped with two at least, two the silica gel piece is located two magnetic core boards respectively and is kept away from each other the lateral wall, the silica gel piece laminating covers the magnetic core and keeps away from one side of magnetic core center pillar, the heating panel is located the silica gel piece and is kept away from one side of magnetic core and laminate with the silica gel piece. The coil generates heat and transmits to the magnetic core center pillar, the magnetic core at heat transmission both ends is gone up to the heat of magnetic core center pillar, the heat of magnetic core is led to the silica gel piece, the silica gel piece is with heat transfer to the heating panel again, thereby with the heat transfer of coil and magnetic core center pillar to the heating panel and distribute outside the cubic inductance, the cooperation of silica gel piece and heating panel, when realizing the whole heat dissipation of cubic inductance, can reduce the whole weight of cubic inductance, and when the assembly, only need fix silica gel piece and heating panel respectively at the heat dissipation of magnetic core tip can be realized to the cubic inductance, the flow of assembly production has been practiced thrift, greatly reduced the degree of difficulty of producing the inductance. Preferably, the heat conducting part further comprises a silica gel ring, the silica gel ring is sleeved on the periphery of the middle column of the magnetic core, the silica gel ring is positioned in a gap between the middle column of the magnetic core and the coil, and two ends of the silica gel ring are respectively abutted with the two magnetic core plates. Set up the silica gel ring of parcel magnetic core between coil and magnetic core center pillar to with the heat transfer to the magnetic core center pillar more easily of coil, increase the butt radiating area of coil, make the heat transfer of coil to its outside more fully, be favorable to improving the radiating efficiency of coil. Preferably, the silica gel ring is attached to and covers the peripheral wall of the middle column of the magnetic core. The silica gel ring covers the peripheral wall of the magnetic core center pillar, thereby being beneficial to improving the heat dissipation rate of the coil and improving the overall heat dissipation effect of the inductor. Preferably, two magnetic core center posts are arranged, epoxy plates for isolating the coil and the magnetic core plate are arranged at two ends of the magnetic core center post, and the epoxy plates are provided with avoidance holes for the end parts of the magnetic core center post to pass through and be abutted with the magnetic core plate. The periphery cover of magnetic core center pillar is equipped with silica gel ring and coil, and silica gel ring and coil limit magnetic core center pillar and epoxy boar