High current amorphous powder core inductor

• US 8,310,332 B2
• Filed: 10/08/2008
• Issued: 11/13/2012
• Est. Priority Date: 10/08/2008
• Status: Expired due to Fees

• Current Assignee: Cooper Technologies Company (Eaton Corporation PLC.)
• Original Assignee: Cooper Technologies Company (Eaton Corporation PLC.)
• Inventors: Yan, Yipeng, Bogert, Robert James
• Primary Examiner(s): Musleh, Mohamad
• Assistant Examiner(s): Lian, Mangtin
• Application Number:
  US12/247,821
• Publication Number:
  US 20100085139A1
• Time in Patent Office: 1,497 Days
• Field of Search: 336/83, 336/192, 336/212, 336220-223, 336232-234, 296/06
• US Class Current: 336/221
• CPC Class Codes: H01F 1/15358 Making agglomerates therefrom, e.g. by pressing
• CPC Class Codes: H01F 17/04 with magnetic core
• CPC Class Codes: H01F 2017/048 with encapsulating core, e.g. made of resin and magnetic powder
• CPC Class Codes: H01F 27/255 made from particles H01F27/26 takes precedence
• CPC Class Codes: H01F 27/2847 Sheets; Strips H01F27/2866 takes precedence
• CPC Class Codes: H01F 41/0226 from amorphous ribbons
• CPC Class Codes: H01F 41/0246 Manufacturing of magnetic circuits by moulding or by pressing powder magnetic cores made by moulding or by pressing powder H01F27/255; soft magnetic particles H01F1/20, H01F1/36
• CPC Class Codes: Y10T 29/49073 by assembling coil and core

Abstract

A magnetic component and a method of manufacturing the same. The method comprises the steps of providing at least one shaped-core fabricated from an amorphous powder material, coupling at least a portion of at least one winding to the at least one shaped-core, and pressing the at least one shaped-core with at least a portion of the at least one winding. The magnetic component comprises at least one shaped-core fabricated from an amorphous powder material and at least a portion of at least one winding coupled to the at least one shaped-core, wherein the at least one shaped-core is pressed to at least a portion of the at least one winding. The winding may be preformed, semi-preformed, or non-preformed and may include, but is not limited to, a clip or a coil. The amorphous powder material may be an iron-based or cobalt-based amorphous powder material or a nanoamorphous powder material.

Claims

1. An electromagnetic component, comprising:

at least one shaped-core fabricated from an amorphous magnetically soft powder material, the at least one shaped core having a top surface and a bottom surface opposing the top surface; and

at least one preformed conductive winding coupled to the at least one shaped-core, the at least one preformed conductive winding formed with a winding portion and opposing first and second leads, the winding portion including opposing major surfaces and lateral side surfaces interconnecting the opposing major surfaces, the winding portion engaging the top surface of the at least one shape-core and the opposing first and second leads engaging the bottom surface of the at least one shaped-core without being bent around the at least one shaped-core;

wherein the amorphous magnetically soft powder material is a nanoamorphous powder material; and

wherein the at least one shaped-core comprises a first shaped-core and a second shaped-core, wherein the winding portion is extended between the first shaped-core and the second shaped-core and wherein the first and second shaped-cores are pressed in surface contact with one another.

2. The electromagnetic of claim 1, wherein the amorphous magnetically soft powder material is an iron-based amorphous powder material.

3. The electromagnetic magnetic component of claim 1, wherein the first shaped core is a U shaped-core and the second shaped-core is an I core.

4. The electromagnetic magnetic component of claim 3, wherein the I core includes the top surface and the bottom surface, the bottom surface further having a first end, the bottom surface configured to receive the first and second leads at the first end and allow the winding portion to be laterally moved across the top surface and away from the first end until the first and second leads reach a predetermined position on the bottom surface, and the bottom surface further configured to prevent movement of the first and second leads beyond the predetermined position.

5. The electromagnetic magnetic component of claim 3, wherein the U shaped-core is symmetrical and includes a first leg, a second leg, and channel extending between the first and second leg, and further wherein the winding portion is situated in the winding channel and the U-shaped core is pressed in surface contact with the winding portion and is pressed in surface contact with at least a portion of the I-core.

6. The electromagnetic component of claim 3, wherein the U shaped-core is asymmetrical and includes a first leg, a second leg, and channel extending between the first and second leg, and further wherein the winding portion is situated in the winding channel and the U-shaped core is pressed in surface contact with the winding portion and is pressed in surface contact with at least a portion of the I-core.

7. The electromagnetic component of claim 1, wherein the at least one preformed conductive winding is a preformed winding clip.

8. The electromagnetic component of claim 7, wherein the winding clip is a C-shaped clip.

9. The electromagnetic component of claim 1, wherein the at least one conductive winding comprises a plurality of windings.

10. The electromagnetic component of claim 1, wherein the at least one preformed conductive winding comprises a plurality of windings.

11. An electromagnetic component, comprising:

a first shaped-core fabricated from an amorphous magnetically soft powder material;

a second shaped-core fabricated from an amorphous magnetically soft powder material;

an electrically conductive preformed winding clip comprising a first lead, a second lead and a winding portion therebetween, wherein the winding portion of the clip is extended between the first shaped-core and the second shaped-core and the first and second leads extend exterior to the first and second shaped-cores without being bent around either of the first and second shaped-cores;

wherein the amorphous magnetically soft powder material is a nanoamorphous powder material, and

wherein facing surfaces of the first shaped-core, the second shaped-core, and the winding clip are pressed in surface engagement with one another, thereby eliminating any separation between the winding portion and the amorphous magnetically soft powder material of the first and second shaped-cores.

12. The electromagnetic component of claim 11, wherein the amorphous magnetically soft powder material is an iron-based amorphous powder material.

13. An electromagnetic component, comprising:

a first shaped-core fabricated from a magnetically soft powder material, the first shaped-core having a top surface and a bottom surface;

a second shaped-core fabricated from a magnetically soft powder material, the second shaped-core having a top surface and a bottom surface; and

an electrically conductive preformed winding clip comprising a first lead, a second lead and a winding portion therebetween, wherein the winding portion of the clip is extended between the top surface of the first shaped-core and the bottom surface of the second shaped-core and the first and second leads extend on the bottom surface of the first shaped-core without being bent around the first-shaped core,

wherein the top surface of the first shaped-core and the bottom surface of the second shaped-core are pressed in surface engagement with one another and are pressed in surface engagement with the winding clip, thereby completely surrounding the winding portion with the magnetically soft powder material of the first and second shaped-cores and so that no gap exists between the magnetically soft powder material and any portion of the winding portion;

wherein at least one of the first and second shaped-cores is shaped from a nanoamorphous magnetically soft powder material.

14. The electromagnetic component of claim 13 wherein at least one of the first and second shaped-cores is shaped from an iron-based magnetic powder material.