Film capacitor having a package for heat transfer

Patent metadata

Field	Value
Publication number	US-2016174356-A1
Application number	US-201414568682-A
Country	US
Kind code	A1
Filing date	Dec 12, 2014
Priority date	Dec 12, 2014
Publication date	Jun 16, 2016
Grant date	—

Abstract

A capacitor comprises a first winding member, where the first winding member comprises a first dielectric layer and a first conductive layer. A second winding member comprises a second dielectric layer and second conductive layer. The first winding member is interleaved, partially or entirely, with the second winding layer. A dielectric shell or shell is adapted to at least radially contain or border the first winding member and the second winding member. The first winding member is electrically connected to a first conductive end. A second winding member is electrically connected to a second conductive end. The second conductive end is opposite the first conductive end. The first conductive end forms a first lead; the second conductive end forms a second lead.

First claim

1 . A capacitor comprising:
a first winding member comprising a first conductive layer and first dielectric layer overlying the first conductive layer; a second winding member comprising a second conductive layer and a second dielectric layer overlying the second conductive layer, the first winding member interleaved, partially or entirely, with the second winding layer; a dielectric shell for radially surrounding the first winding member and the second winding member; and the first winding member electrically connected to a first conductive end; a second winding member electrically connected to a second conductive end, the second conductive end opposite the first conductive end, the first conductive end forming a first lead, the second conductive end forming a second lead, wherein the first conductive end has plurality of axially extending holes and wherein the second conductive end has a plurality of axial extending holes.

2 . The capacitor according to claim 1 wherein the first conductive end has a peripheral mounting lip that extends inward toward the dielectric shell and wherein the second conductive end has a peripheral mounting lip that extends inward toward the dielectric shell.

3 . (canceled)

4 . The capacitor according to claim 1 wherein a plurality of first tabs extend at a substantially orthogonal angle from the first conductive end and wherein a plurality of second tabs extend at a substantially orthogonal angle from the second conductive end.

5 . The capacitor according to claim 4 wherein the first tabs are interleaved with or adjacent to second tabs.

6 . The capacitor according to claim 4 wherein each of the first tabs and the second tabs terminates in an arched portion, wherein the arch portion is biased against the dielectric shell.

7 . The capacitor according to claim 6 wherein a greater radius of the arched portion faces inward toward the dielectric shell and a lesser radius of the arched portion faces outward.

8 . A capacitor comprising:
a first winding member comprising a first conductive layer and first dielectric layer overlying the first conductive layer; a second winding member comprising a second conductive layer and a second dielectric layer overlying the second conductive layer, the first winding member interleaved, partially or entirely, with the second winding layer; a third winding member comprising a first conductive layer and first dielectric layer overlying the first conductive layer; a fourth winding member comprising a second conductive layer and a second dielectric layer overlying the second conductive layer, the first winding member interleaved, partially or entirely, with the second winding layer; a dielectric shell for radially surrounding the first winding member and the second winding member, a secondary dielectric shell for radially surrounding the third winding member, and the fourth winding member; and the first winding member and third winding member electrically connected to a first conductive end; a second winding member and fourth winding member electrically connected to a second conductive end, the second conductive end opposite the first conductive end, the first conductive end forming a first lead, the second conductive end forming a second lead.

9 . The capacitor according to claim 8 wherein the first conductive end has a peripheral mounting lip that extends inward toward the dielectric shell and wherein the second conductive end has a peripheral mounting lip that extends inward toward the dielectric shell.

10 . The capacitor according to claim 8 wherein the first conductive end has plurality of axially extending holes and wherein the second conductive end has a plurality of axial extending holes.

11 . The capacitor according to claim 8 wherein a plurality of first tabs extend at a substantially orthogonal angle from the first conductive end and wherein a plurality of second tabs extend at a substantially orthogonal angle from the second conductive end.

12 . The capacitor according to claim 11 wherein the first tabs are interleaved with or adjacent to second tabs.

13 . The capacitor according to claim 11 wherein each of the first tabs and the second tabs terminates in an arched portion, wherein the arch is biased against the dielectric shell.

14 . The capacitor according to claim 13 wherein a greater radius of the arched portion faces inward toward the dielectric shell and a lesser radius of the arched portion faces outward.

15 . An electronic assembly comprising:
a circuit board having a dielectric layer, conductive traces, and mounting pads associated with one or more conductive traces, a first winding member comprising a first conductive layer and first dielectric layer overlying the first conductive layer; a second winding member comprising a second conductive layer and a second dielectric layer overlying the second conductive layer, the first winding member interleaved, partially or entirely, with the second winding layer; a dielectric shell for radially surrounding the first winding member and the second winding member; the first winding member electrically connected to a first conductive end; a second winding member electrically connected to a second conductive end, the second conductive end opposite the first conductive end, the first conductive end forming a first lead, the second conductive end forming a second lead; and a portion of the first conductive end electrically and mechanically connected to a mounting pad via solder, wherein a plurality of first tabs extend at a substantially orthogonal angle from the first conductive end and wherein a plurality of second tabs extend at a substantially orthogonal angle from the second conductive end.

16 . The electronic assembly according to claim 15 further comprising a portion of the second conductive end electrically and mechanically connected to another mounting pad via solder.

17 . The electronic assembly according to claim 15 further comprising a portion of the second conductive end electrically and mechanically connected to an end of another capacitor.

18 . The electronic assembly according to claim 15 wherein the first conductive end has a peripheral mounting lip that extends inward toward the dielectric shell and wherein the second conductive end has a peripheral mounting lip that extends inward toward the dielectric shell.

19 . The electronic assembly according to claim 15 wherein the first conductive end has plurality of axially extending holes and wherein the second conductive end has a plurality of axial extending holes.

20 . (canceled)

21 . The electronic assembly according to claim 15 wherein the first tabs are interleaved with or adjacent to second tabs.

22 . The electronic assembly according to claim 21 wherein each of the first tabs and the second tabs terminates in an arched portion, wherein the arch is biased against the dielectric shell.

23 . The electronic assembly according to claim 21 wherein each of the first tabs is electrically and mechanically connected to a first inner conductive pad on the circuit board, and wherein each of the second tabs is electrically and mechanically connected to a second inner conductive pad on the circuit board; the first inner conductive pad and the second inner conductive pad forming a thermal pathway for sinking heat into the circuit board.

24 . The electronic assembly according to claim 22 wherein a greater rad

Assignees

• Deere & Co

Inventors

• Singh Brij N
• Roan Thomas

Classifications

• H01G4/32

  Wound capacitors · CPC title

• H01G4/38

  Multiple capacitors, i.e. structural combinations of fixed capacitors · CPC title

• H01G2/065

  for surface mounting, e.g. chip capacitors · CPC title

• H01G4/236 Primary

  leading through the housing, i.e. lead-through · CPC title

• H01G2/106

  Fixing the capacitor in a housing · CPC title