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CN-122025368-A - Magnetic combined inductor and manufacturing method thereof

CN122025368ACN 122025368 ACN122025368 ACN 122025368ACN-122025368-A

Abstract

The invention discloses a magnetic combined inductor, which relates to the technical field of inductance elements and comprises a shared magnetic core cover, at least two magnetic core components and an end cover, wherein the magnetic core components are arranged side by side, the adjacent magnetic core components are connected through the shared magnetic core cover, and the end cover is connected to one end, far away from the shared magnetic core cover, of the magnetic core components. All adjacent magnetic core components can be directly connected through the shared magnetic core cover, an upper cover is not required to be configured for each magnetic core component independently, during assembly, the plurality of magnetic core components can be connected and positioned only by completing one-time integral alignment and fixation through the shared magnetic core cover, the alignment and fixation steps are greatly reduced, the production efficiency is remarkably improved, meanwhile, accumulated errors caused by multiple assemblies are avoided, and the magnetic core components are arranged side by side to be matched with the integral connection of the shared magnetic core cover, so that the relative positions of the magnetic core components are more accurate and stable, and the influence of assembly errors on the magnetic circuit performance is reduced.

Inventors

  • WANG MIN
  • LI XINGONG
  • TAN HUIYAN

Assignees

  • 合肥德珑电子科技有限公司

Dates

Publication Date
20260512
Application Date
20260226

Claims (10)

  1. 1. A magnetically combined inductor, comprising: A common core cover (1); At least two magnetic core components (2), wherein the magnetic core components (2) are arranged side by side, and the adjacent magnetic core components (2) are connected through the common magnetic core cover (1); the end cover (3) is connected to one end, far away from the shared magnetic core cover (1), of the magnetic core assembly (2); Each magnetic core assembly (2) comprises at least one magnetic core middle column (21) and an aluminum coil (22) wound on the magnetic core middle column (21), and one end of the magnetic core middle column (21) is connected with the common magnetic core cover (1).
  2. 2. A magnetic combined inductor according to claim 1, characterized in that the other end of the core leg (21) is connected to an end cap (3).
  3. 3. A magnetic composite inductor according to claim 1, wherein said aluminum coil (22) is wound from flat enameled aluminum wire.
  4. 4. A magnetic combined inductor according to claim 1, characterized in that insulating plates (23) are provided at both ends of the core leg (21), and that insulating layers (24) are provided on the core leg (21).
  5. 5. A magnetic combined inductor according to claim 1, characterized in that the bottom of the end cap (3) is provided with a shim plate (4).
  6. 6. A magnetic combined inductor according to claim 1, characterized in that the common core cover (1) is fixedly connected to the ends of the core legs (21) by means of an adhesive.
  7. 7. A magnetic combined inductor according to claim 1, characterized in that two magnetic core assemblies (2) are provided, a common magnetic core cover (1) is connected between the two magnetic core assemblies (2), and end covers (3) are connected to the outer sides of the two magnetic core assemblies (2) facing away from each other.
  8. 8. The magnetic combined inductor according to claim 1, wherein two magnetic core center posts (21) are provided, and each magnetic core center post (21) is sleeved with an aluminum coil (22).
  9. 9. A method for manufacturing a magnetic combined inductor, characterized in that the method is applied to the magnetic combined inductor as claimed in any one of claims 1-8, comprising the steps of: s1, providing at least one common magnetic core cover (1), a blank body of at least two magnetic core components (2) and two end covers (3); s2, winding a flat aluminum wire on each magnetic core center post (21) of the magnetic core assembly (2) blank to form an aluminum coil (22); S3, placing at least two magnetic core assemblies (2) wound with aluminum coils (22) side by side, and aligning and connecting a common magnetic core cover (1) with one end of a corresponding magnetic core center post (21) in each magnetic core assembly (2); S4, aligning and connecting the end cover (3) with the other end of the corresponding magnetic core center post (21) in each magnetic core assembly (2); s5, connecting the common magnetic core cover (1) with each magnetic core center pillar (21), and connecting the end cover (3) with each magnetic core center pillar (21) to finish packaging.
  10. 10. The method of manufacturing according to claim 9, further comprising, prior to step S2, providing an insulating layer (24) on the core leg (21), and mounting an insulating plate (23) on an end of the core leg (21).

Description

Magnetic combined inductor and manufacturing method thereof Technical Field The invention relates to the technical field of inductance elements, in particular to a magnetic combined inductance and a manufacturing method thereof. Background In power modules, communication devices and portable electronic devices, magnetic combined inductances are key elements for achieving energy storage and filtering. Conventional designs commonly employ a discrete structure, i.e., a plurality of individual inductive elements disposed side-by-side, each element comprising a complete set of magnetic core components, typically consisting of an upper cover, a center post, and a lower cover. The coil is widely wound on each center post by copper wires with high conductivity. Such discrete designs are currently the dominant practice in the industry. However, the traditional discrete magnetic combined inductor has the defects that the integral weight and the material cost of the element are high due to the large density of magnetic core materials and the large specific gravity of copper wires, the equipment is not beneficial to light weight and cost control, the number of parts is large, the independent magnetic cores are required to be aligned and fixed for many times during assembly, the steps are complicated, the production efficiency is low, and assembly errors are easy to generate, meanwhile, the independent magnetic cores are placed side by side, so that the structure is loose, the occupied area of a printed circuit board is large, the space utilization rate is low, and meanwhile, the electromagnetic interference can be caused by discrete magnetic circuit layout, and the circuit performance and the reliability are influenced. Disclosure of Invention The invention provides a magnetic combined inductor and a manufacturing method thereof, which can solve the problems that in the prior art, each independent magnetic core needs to be aligned and fixed for multiple times, the steps are complicated, the production efficiency is low, and assembly errors are easy to generate. The magnetic combined inductor comprises a shared magnetic core cover, at least two magnetic core components and end covers, wherein the magnetic core components are arranged side by side, the adjacent magnetic core components are connected through the shared magnetic core cover, the end covers are connected to one end, far away from the shared magnetic core cover, of each magnetic core component, each magnetic core component comprises at least one magnetic core center pillar and an aluminum coil wound on the magnetic core center pillar, and one end of each magnetic core center pillar is connected with the shared magnetic core cover. Compared with the prior art, the magnetic combined inductor provided by the invention has the following beneficial effects: The magnetic combination inductor can be directly connected with all adjacent magnetic core assemblies through the shared magnetic core cover, an upper cover is not required to be configured for each magnetic core assembly, the magnetic core assemblies can be connected and positioned only by completing one-time integral alignment and fixation through the shared magnetic core cover during assembly, the alignment and fixation steps are greatly reduced, the production efficiency is remarkably improved, accumulated errors caused by multiple assemblies are avoided, the magnetic core assemblies are arranged side by side and are integrally connected with the shared magnetic core cover, the relative positions of the magnetic core assemblies are more accurate and stable, the influence of assembly errors on magnetic circuit performance is reduced, the end cover is connected to one end of the magnetic core assemblies, which is far away from the shared magnetic core cover, and two-end packaging structures are formed with the shared magnetic core cover, so that the overall structural stability is further improved, meanwhile, the magnetic circuit layout is more regular by being matched with the shared magnetic core cover, electromagnetic interference is reduced, the coil and the integral inductor is wound on a middle column through an aluminum wire to replace the traditional copper wire design, the coil and the integral inductor weight is remarkably reduced due to lower specific gravity of the aluminum wire, the material cost is also reduced, meanwhile, the middle column provides a stable winding carrier for the aluminum coil, the coil assembly regularity is ensured, and the influence of the coil assembly regularity on the magnetic core performance is reduced. Further, the other end of the magnetic core center pillar is connected with an end cover. Further, the aluminum coil is formed by winding a flat enameled aluminum wire. Further, insulating plates are arranged at two ends of the magnetic core center pillar, and insulating layers are arranged on the magnetic core center pillar. Further, a backing plate is arranged at the