Storage choke

Patent metadata

Field	Value
Publication number	US-11244780-B2
Application number	US-201816619907-A
Country	US
Kind code	B2
Filing date	Jun 25, 2018
Priority date	Jul 4, 2017
Publication date	Feb 8, 2022
Grant date	Feb 8, 2022

Abstract

A storage choke is disclosed. In an embodiment a storage choke includes at least two coils and a core, wherein the core couples the coils to one another, and wherein the core comprises a first region comprising a first material and a second region comprising a second material that is different from the first material.

First claim

The invention claimed is:

1. A storage choke comprising:
at least two coils; and
a core,
wherein the core couples the coils to one another,
wherein the core comprises a first region comprising a first material, and a second region comprising a second material that is different from the first material, and
wherein the first material has a higher saturation magnetization than the second material.

2. The storage choke according to claim 1 , wherein a magnetic saturation of the first material does not occur until magnetic flux densities of more than one tesla are reached.

3. The storage choke according to claim 1 , wherein the first material has a lower magnetic permeability than the second material.

4. The storage choke according to claim 1 , wherein the first region comprises rod-shaped cores and inner plates, each coil being wound around a rod-shaped core, and wherein the rod-shaped cores are arranged between the inner plates and bear directly on the inner plates.

5. The storage choke according to claim 4 , wherein the second region comprises outer plates, which are arranged on sides of the inner plates facing away from the rod-shaped cores and are arranged parallel to the inner plates.

6. The storage choke according to claim 5 , wherein the inner plates and the outer plates are separated from one another by a gap.

7. The storage choke according to claim 1 , wherein the first region comprises at least one core part, which is arranged between two coils in such a way that a first side surface of the at least one core part faces toward one of the two coils and a second side surface of the at least one core part faces toward another of the two coils.

8. The storage choke according to claim 7 , wherein the at least one core part has a triangular cross section.

9. The storage choke according to claim 7 , wherein the first region comprises a plurality of core parts, and wherein an opening is respectively arranged between the core parts.

10. The storage choke according to claim 1 , wherein the first material is a compressed iron powder core.

11. The storage choke according to claim 1 , wherein the second material is a sintered material.

12. The storage choke according to claim 1 , wherein the second material is MnZn ferrite.

13. A polyphase DC/DC converter comprising:
the storage choke according to claim 1 .

14. A storage choke comprising:
at least two coils; and
a core,
wherein the core couples the coils to one another,
wherein the core comprises a first region comprising a first material, and a second region comprising a second material that is different from the first material, and
wherein a magnetic saturation of the first material does not occur until magnetic flux densities of more than one tesla are reached.

15. A storage choke comprising:
at least two coils; and
a core,
wherein the core couples the coils to one another,
wherein the core comprises a first region comprising a first material, and a second region comprising a second material that is different from the first material,
wherein the first region comprises rod-shaped cores and inner plates, each coil being wound around a rod-shaped core, and
wherein the rod-shaped cores are arranged between the inner plates and bear directly on the inner plates.

16. The storage choke according to claim 15 , wherein the second region comprises outer plates, which are arranged on sides of the inner plates facing away from the rod-shaped cores and are arranged parallel to the inner plates.

17. The storage choke according to claim 16 , wherein the inner plates and the outer plates are separated from one another by a gap.

18. A storage choke comprising:
at least two coils; and
a core,
wherein the core couples the coils to one another,
wherein the core comprises a first region comprising a first material, and a second region comprising a second material that is different from the first material,
wherein the first region comprises at least one core part, which is arranged between two coils in such a way that a first side surface of the at least one core part faces toward one of the two coils and a second side surface of the at least one core part faces toward another of the two coils.

19. The storage choke according to claim 18 , wherein the at least one core part has a triangular cross section.

20. The storage choke according to claim 18 , wherein the first region comprises a plurality of core parts, and wherein an opening is respectively arranged between the core parts.

Assignees

• Tdk Electronics Ag
• Bayerische Motoren Werke Ag

Inventors

• Beck Fabian
• Boehm Florian
• Koeppen Matthias
• Raimann Manuel

Classifications

• H02M3/33573

  Full-bridge at primary side of an isolation transformer · CPC title

• H01F37/00

  Fixed inductances not covered by group H01F17/00 · CPC title

• H02M1/26

  incorporating cam-operated contacts · CPC title

• H01F27/28

  Coils; Windings; Conductive connections · CPC title

• H01F2003/106

  Magnetic circuits using combinations of different magnetic materials · CPC title