Compact liquid converter assembly

• US 7,068,507 B2
• Filed: 09/27/2002
• Issued: 06/27/2006
• Est. Priority Date: 09/27/2002
• Status: Expired due to Fees

• Current Assignee: Rockwell Automation Technologies Incorporated (Allen-Bradley Co., Inc.)
• Original Assignee: Rockwell Automation Technologies Incorporated (Allen-Bradley Co., Inc.)
• Inventors: Kasunich, John, Pfeifer, David W., Sheppard, Richard
• Primary Examiner(s): Chérvinsky, Boris
• Application Number:
  US10/260,064
• Publication Number:
  US 20060007720A1
• Time in Patent Office: 1,369 Days
• Field of Search: 361/689, 361/690, 361/698, 361/699, 361/700, 361/702, 361/703, 361/704, 257/714, 257/715, 174/15.1, 174/15.2, 165/80.3, 165/80.4, 165/104.33, 165/122
• US Class Current: 361/699
• CPC Class Codes: H05K 7/20927 Liquid coolant without phase change

Abstract

An electronic converter assembly including a liquid cooled heat sink member having a sink length dimension, at least one mounting surface and first and second oppositely facing lateral surfaces, the mounting surface and first and second lateral surfaces forming first and second lateral edges, respectively, the sink member also forming at least one internal channel that extends substantially along the entire sink length, an inlet and an outlet that open into opposite ends of the channel, a plurality of power switching devices mounted side by side to the mounting surface thereby forming a single device row that extends substantially along the sink length, each device including intra-converter terminals that are substantially within a single connection plane, a plurality of capacitors, each capacitor including capacitor connection terminals, the capacitors linked for support to and adjacent the sink member with the capacitor terminals juxtaposed substantially within the connection plane and a linkage assembly including a plurality of conductors that link the capacitor terminals to the intra-converter terminals to form a power conversion topology.

Claims

1. An electronic converter assembly comprising:

a liquid cooled heat sink member having a sink length dimension, at least one mounting surface and first and second oppositely facing lateral surfaces, the mounting surface and first and second lateral surfaces forming first and second lateral edges, respectively, the sink member also forming at least one internal channel that extends substantially along the entire sink length, an inlet and an outlet that open into opposite ends of the channel;

a plurality of power switching devices mounted side by side to the mounting surface thereby forming a single device row that extends substantially along the sink length, each device including intra-converter terminals that are substantially within a single connection plane;

a plurality of capacitors, each capacitor including capacitor connection terminals, the capacitors linked for support to and adjacent the sink member with the capacitor terminals juxtaposed substantially within the connection plane; and

a linkage assembly including a plurality of conductors that link the capacitor terminals to the intra-converter terminals to form a power conversion topology.

2. The apparatus of claim 1 wherein each power switching device includes first and second oppositely facing linking edges and wherein the intra-converter terminals form the first linking edge proximate the first lateral edge of the sink member.

3. The apparatus of claim 1 further including a bracket member mounted to the sink member and extending past the first surface, the capacitors mounted to the bracket member for support.

4. The apparatus of claim 3 wherein the mounting surface is a first mounting surface and the sink member includes a second mounting surface that faces in a direction opposite the first mounting surface and wherein the bracket member is mounted to the second mounting surface.

5. The apparatus of claim 4 wherein the bracket member includes a proximate member mounted to the second mounting surface, an intermediate member linked to and forming a substantially 90 degree angle with the proximate member and extending substantially parallel to the first lateral side of the sink member and generally away from the sink member and a distal member forming a substantially 90 degree angle with the intermediate member and extending generally away from the sink member, the capacitors mounted to the distal member.

6. The apparatus of claim 5 wherein each of the devices includes a heat dissipating surface adjacent the mounting surface and is characterized by a device thickness dimension between the connection plane and the dissipating surface of the device, the first and second mounting surfaces are separated by a sink thickness, the intermediate member has an intermediate member length, each capacitor includes first and second oppositely facing ends and a length dimension between the first and second ends, the capacitor terminals extend axially from the first end of each capacitor and the second end of each capacitor is mounted to the distal member and, wherein, the combined sink thickness, device thickness and intermediate member length is substantially similar to the capacitor length dimension.

7. The apparatus of claim 6 wherein each capacitor has a heat conducting extension that protrudes from the second end of the capacitor and that is in conductive contact with the distal end of the bracket member.

8. The apparatus of claim 7 wherein the bracket member is formed of a heat conducting material.

9. The apparatus of claim 8 wherein the bracket is formed from one of aluminum and copper.

10. The apparatus of claim 8 wherein the linkage assembly includes a substantially planar laminated bus bar.

11. The apparatus of claim 1 wherein the linkage assembly links the capacitors and power switching devices together to form an inverter.

12. The apparatus of claim 11 wherein the linkage assembly links the capacitors and power switching devices together to also form a rectifier.

13. The apparatus of claim 2 wherein each device also includes inter-converter connection terminals that form the second linking edge and the inter-converter connection terminals are adjacent the second lateral edge of the sink member and wherein the inter-converter terminals are juxtaposed within the connection plane.

14. The apparatus of claim 2 wherein the first and second lateral edges of the mounting surface form a sink member width and wherein a device width between the first and second linking edges is substantially similar to the sink member width.

15. The apparatus of claim 1 wherein the channel inlet is disposed below the channel outlet.

16. The apparatus of claim 15 wherein the channel inlet is substantially directly vertically below the channel outlet.

17. The apparatus of claim 16 further including extension members that extend into the channel thereby increasing turbulence in liquid pumped from the inlet to the outlet.

18. The apparatus of claim 3 wherein the bracket member is integrally formed with the sink member.

19. The apparatus of claim 5 wherein a cooling space is formed adjacent both of the second mounting surface and the intermediate member and wherein drive control components are mounted to the second mounting surface.

20. An electronic converter assembly comprising:

a heat sink member having a sink length dimension, at least one mounting surface and first and second oppositely facing lateral surfaces, the mounting surface and first and second lateral surfaces forming first and second lateral edges, respectively;

a plurality of power switching devices mounted side by side to the mounting surface to form a single device row that extends along the sink length, each device including intra-converter terminals juxtaposed substantially within a single connection plane, each device also including first and second oppositely facing linking edges having a device width therebetween;

a bracket member mounted to the sink member and extending past the first lateral surface;

a plurality of capacitors, each capacitor including capacitor connection terminals, the capacitors mounted to the bracket member adjacent the sink member with the capacitor terminals substantially within the connection plane; and

a linkage assembly including a plurality of conductors that link the capacitor terminals to the intra-converter terminals to form a power conversion topology.

21. The apparatus of claim 20 wherein the sink member forms at least one internal channel that extends substantially along the entire sink length and an inlet and an outlet that open into opposite ends of the channel and, wherein, the converter configuration is juxtaposed so that the channel is substantially vertically oriented.

22. The apparatus of claim 21 wherein the channel inlet is substantially vertically below the channel outlet.

23. The apparatus of claim 22 wherein the mounting surface is a first mounting surface and the sink member includes a second mounting surface that faces in a direction opposite the first mounting surface, the bracket member is mounted to the second mounting surface, the bracket member includes a proximate member mounted to the second mounting surface, an intermediate member linked to and forming a substantially 90 degree angle with the proximate member and extending substantially parallel to the first lateral side of the sink member and generally away from the sink member and a distal member forming a substantially 90 degree angle with the intermediate member and extending generally away from the sink member, the capacitors mounted to the distal member.

24. The apparatus of claim 23 wherein each of the devices includes a heat dissipating surface adjacent the mounting surface and is characterized by a device thickness dimension between the connection plane and the dissipating surface of the device, the first and second mounting surfaces are separated by a sink thickness, the intermediate member has an intermediate member length, each capacitor includes first and second oppositely facing ends and a length dimension between the first and second ends, the capacitor terminals extend axially from the first end of each capacitor and the second end of each capacitor is mounted to the distal member and, wherein, the combined sink thickness, device thickness and intermediate member length is substantially similar to the capacitor length dimension.

25. The apparatus of claim 20 wherein the bracket member is formed from one of aluminum and copper.

26. The apparatus of claim 20 wherein the linkage assembly includes a laminated bus bar.

27. The apparatus of claim 20 wherein the linking assembly links the capacitors and power switching devices together to form both a rectifier and an inverter.

28. The apparatus of claim 20 wherein the first and second lateral edges of the mounting surface form a sink member width and wherein a device width is substantially similar to the sink member width.

29. An electronic converter assembly comprising:

a liquid cooled heat sink member having a sink length dimension and at least one mounting surface, the sink member forming at least one internal channel that extends substantially along the entire sink length and an inlet and an outlet that open into opposite ends of the channel; and

a plurality of power switching devices mounted to the mounting surface;

wherein, the assembly is juxtaposed such that the inlet is substantially vertically below the outlet.

30. The assembly of claim 29 wherein the switching devices are mounted to the mounting surface in a single device row that extends generally parallel to the channel.

31. The assembly of claim 30 wherein at least a sub-set of the switching devices are linked together to form an inverter.

32. The assembly of claim 31 wherein at least a sub-set of the switching devices are linked together to form a rectifier.