Converter

Patent metadata

Field	Value
Publication number	US-9484145-B2
Application number	US-201213555722-A
Country	US
Kind code	B2
Filing date	Jul 23, 2012
Priority date	May 15, 2012
Publication date	Nov 1, 2016
Grant date	Nov 1, 2016

Abstract

A converter includes a transformer module, a primary side circuit module, and a secondary side circuit module. The transformer module includes a magnetic core group and a winding. The winding includes a primary winding and a secondary winding, and is further installed on the magnetic core group. The primary side circuit module is coupled to the primary winding. The secondary side circuit module is coupled to the secondary winding. The primary side circuit modules or the secondary side circuit module has overlapping vertical projection area on a first plane with the winding, and the first plane is a plane in a horizontal direction of the winding.

First claim

What is claimed is:

1. A converter, comprising:
a transformer module comprising a magnetic core group and a winding, wherein the winding comprises a primary winding and a secondary winding, and the winding is installed on the magnetic core group;
a primary side circuit module coupled to the primary winding of the transformer module, wherein two ends of the primary winding are respectively coupled with the primary side circuit module by a primary side outgoing wire, the primary side outgoing wire comprises a primary side internal layer outgoing wire, a primary side outgoing wire hole and a primary side external layer outgoing wire, the primary side internal layer outgoing wire is electrically connected with the primary side external layer outgoing wire through the primary side outgoing wire hole; and
a secondary side circuit module coupled to the secondary winding of the transformer module, wherein two ends of the secondary winding are respectively coupled with the secondary side circuit module by a secondary side outgoing wire, the secondary side outgoing wire comprises a secondary side internal layer outgoing wire, a secondary side outgoing wire hole and a secondary side external layer outgoing wire, and the secondary side internal layer outgoing wire is electrically connected with the secondary side external layer outgoing wire through the secondary side outgoing wire hole;
wherein the primary side circuit module or the secondary side circuit module has an overlapping vertical projection area on a first plane with the winding of the transformer module, and the first plane is a plane in a horizontal direction of the winding.

2. The converter of claim 1 , wherein the transformer module is a planar transformer.

3. The converter of claim 1 , wherein the magnetic core group comprises a first magnetic core component and a corresponding second magnetic core component, the first magnetic core component has a magnetic core center pillar, a magnetic core cover plate, a first side pillar, a second side pillar, a primary side opening and a secondary side opening, the primary side opening and the secondary side opening are separately located on two ends of the first side pillar and the second side pillar, and the winding is installed between the first magnetic core component and the second magnetic core component and further is set on the magnetic core center pillar.

4. The converter of claim 3 , wherein a vertical projection area of the first magnetic core component or the second magnetic core component on the first plane has at least one non-covering area which does not cover the vertical projection area of the winding on the first plane, so that at least one part of the primary side circuit module or the secondary side circuit module is vertically projected within the non-covering area and has the overlapping vertical projection area on the first plane with the winding.

5. The converter of claim 4 , wherein when the vertical projection area of the first magnetic core component on the first plane has at least one non-covering area which does not cover the vertical projection area of the winding on the first plane, the magnetic core cover plate of the first magnetic core component has a thickness greater than that of the second magnetic core component.

6. The converter of claim 4 , wherein when the vertical projection area of the second magnetic core component on the first plane has at least one non-covering area which does not cover the vertical projection area of the winding on the first plane, the magnetic core cover plate of the first magnetic core component has a thickness smaller than that of the second magnetic core component.

7. The converter of claim 3 , wherein the primary side opening is asymmetrical with the secondary side opening with respect to the magnetic core center pillar.

8. The converter of claim 3 , wherein a vertical projection areas of both the first magnetic core component and the second magnetic core component on the first plane have at least one non-covering area which does not cover the vertical projection area of the winding on the first plane, so that at least one part of the primary side circuit module or the secondary side circuit module is vertically projected within the non-covering area and has the overlapping vertical projection area on the first plane with the winding.

9. The converter of claim 8 , wherein the first magnetic core component and the second magnetic core component are not overlapped in the vertical projection area on the first plane.

10. The converter of claim 8 , wherein the first magnetic core component and the second magnetic core component are overlapped in the vertical projection area on the first plane.

11. The converter of claim 10 , wherein the first side pillar is asymmetrical with the second side pillar with respect to the magnetic core center pillar.

12. The converter of claim 11 , wherein the first side pillar between the primary side opening and the secondary side opening is longer than the second side pillar.

13. The converter of claim 10 , wherein the first magnetic core component and the second magnetic core component are arc shaped inwardly along the primary side opening or the secondary side opening.

14. The converter of claim 3 , wherein the vertical projection areas of the first magnetic core component and the second magnetic core component on the first plane cover the vertical projection area of the winding on the first plane, the first magnetic core component or the second magnetic core component has a groove, the groove has an overlapping vertical projection area on the first plane with the winding, and one end of the primary side circuit module or the secondary side circuit module is accommodated in the groove.

15. The converter of claim 1 , wherein the primary side outgoing wire hole is set in an area between the primary winding and the magnetic core center pillar, in an area of the primary winding or on an external area of the primary winding; and
the secondary side outgoing wire hole is set in an area between the secondary winding and the magnetic core center pillar, in an area of the secondary winding or on an external area of the secondary winding.

16. The converter of claim 15 , wherein when the primary side outgoing wire hole is set on the external area of the primary winding, an element sensitive to leakage inductances in the primary side circuit module is laid at one side of a direction of the primary side outgoing wire hole close to the magnetic core center pillar;
when the secondary side outgoing wire hole is set on the external area of the secondary winding, an element of the secondary side circuit module sensitive to the leakage inductances is laid at one side of the secondary side outgoing wire hole close to the magnetic core center pillar.

17. The converter of claim 1 , wherein the primary winding and the secondary winding are PCB windings.

18. The converter of claim 1 , wherein the converter is a flyback converter.

Assignees

• Liu Teng
• Dai Ke
• Dai ming-hui
• Dong Na
• Ying Jian-Ping
• Delta Electronics Inc

Inventors

• Liu Teng
• Dai Ke
• Dai ming-hui
• Dong Na
• Ying Jian-Ping

Classifications

• H02M3/335

  using semiconductor devices only · CPC title

• H01F38/42

  Flyback transformers · CPC title

• H01F2027/2819

  Planar transformers with printed windings, e.g. surrounded by two cores and to be mounted on printed circuit · CPC title

• H01F27/346 Primary

  Preventing or reducing leakage fields (using magnetic shields H01F27/36; using auxiliary windings H01F27/38) · CPC title

• H01F27/40

  Structural association with built-in electric component, e.g. fuse · CPC title