Inverter having two-part housing

Patent metadata

Field	Value
Publication number	US-10010011-B2
Application number	US-201514805632-A
Country	US
Kind code	B2
Filing date	Jul 22, 2015
Priority date	Jan 22, 2013
Publication date	Jun 26, 2018
Grant date	Jun 26, 2018

Abstract

The disclosure relates to an inverter having a first housing module, a second housing module, removably connected to the first housing module, and power-electronic components in both housing modules, wherein a cooling air channel, opening in the surroundings of the inverter, is delimited in the circumferential direction partially by the first housing module and partially by the second housing module. The first housing module is configured to mount to an external structure and the second housing module is configured to mount to the first housing module. The cooling air channel extends at a distance to a mounting plane of the inverter defined by the first housing module opposite the external structure.

First claim

The invention claimed is:

1. An inverter, comprising:
a housing, comprising:
a first housing module,
a second housing module, which is connected detachably to the first housing module, and
an enclosed cooling air channel, which opens out into a surrounding environment of the inverter, wherein the enclosed cooling air channel is delimited in a circumferential direction partially by the first housing module and partially by the second housing module being structurally coupled together, and

first and second power electronics component parts in the first housing module and the second housing module, respectively,
wherein the first housing module has a first surface that is configured to fit on an external structure and defines a fitting plane, and the second housing module is configured to exclusively fit on the first housing module,
wherein the enclosed cooling air channel is separated and spaced away from the fitting plane of the inverter by a spacing distance, wherein the fitting plane is defined by the first surface of the first housing module with respect to the external structure, and
wherein the first and second power electronics component parts are separated from the enclosed cooling air channel by walls of the first and second housing modules thus defining first and second portions of the first and second housing modules, respectively, such that the first and second power electronics component parts are arranged in first portions of the first and second housing modules that are not arranged in the enclosed cooling air channel that resides in second portions of the first and second housing modules, respectively, but instead are protected from an environment passing through the enclosed cooling air channel.

2. The inverter as claimed in claim 1 , wherein the first housing module and/or the second housing module comprise at least one cooling body, which projects into the enclosed cooling air channel and with which one or more of the power electronics component parts are in thermal contact.

3. The inverter as claimed in claim 1 , wherein the first housing module and/or the second housing module, which is connected detachably to the first housing module, seals off or seal off at least one region for one or more of the first and/or second power electronics component parts, respectively, with respect to the surrounding environment of the inverter.

4. The inverter as claimed in claim 1 , further comprising at least one seal configured to seal off at least one coherent region with respect to the surrounding environment arranged between the first housing module and the second housing module, wherein the at least one coherent region is partially in the first housing module and partially in the second housing module.

5. The inverter as claimed in claim 4 , wherein the at least one coherent region is a coolant channel for a liquid coolant that extends through the first housing module and the second housing module.

6. The inverter as claimed in claim 1 , wherein the first housing module and/or the second housing module each have at least one receptacle configured to position one or more of the first and/or second power electronics component parts, respectively.

7. The inverter as claimed in claim 1 , further comprising electrical plug-type connections configured to make alternate contact with first and/or second power electronics component parts in the first and/or second housing modules, respectively, wherein the electrical plug-type connections are provided between the first housing module and the second housing module.

8. The inverter as claimed in claim 1 , further comprising mechanical linear guides configured to provide alternate orientation when the housing modules are assembled linearly, wherein the mechanical linear guides are provided between the first housing module and the second housing module.

9. The inverter as claimed in claim 1 , further comprising DC connections and/or DC switch disconnectors and/or AC connections and/or AC switch disconnectors and/or winding materials arranged in the first housing module.

10. The inverter as claimed in claim 1 , further comprising circuit boards of power electronics and/or switches of an inverter bridge and/or circuit boards of control electronics arranged in the second housing module.

11. The inverter as claimed in claim 1 , wherein the first housing module and/or the second housing module has a basic body comprising metal, wherein the basic body comprises a part of the first and/or second housing module, respectively, that delimits the enclosed cooling air channel.

12. The inverter as claimed in claim 11 , further comprising at least two further housing modules with identical basic bodies stacked onto the second housing module.

13. The inverter as claimed in claim 11 , wherein the stack of housing modules is closed off by a housing cover.

14. The inverter as claimed in claim 1 , further comprising at least one further housing module that adjoins the second housing module on a side thereof opposite the first housing module.

15. The inverter as claimed in claim 1 , wherein the enclosed cooling air channel, at one of at least two ends which open out into the surrounding environment of the inverter, is provided with at least one cooling air fan.

16. The inverter as claimed in claim 15 , wherein the enclosed cooling air channel branches upwards in the form of a Y or T, wherein the cooling air fan is provided at its lower end, and its two upper ends lie laterally on the housing.

17. The inverter as claimed in claim 15 , further comprising electrical connections between the first housing module and/or the second housing module arranged in a covered connecting region above the enclosed cooling air channel.

18. The inverter as claimed in claim 1 , wherein the enclosed cooling air channel extends in terms of its width over more than two thirds of the width of the housing.

19. The inverter as claimed in claim 1 , wherein the enclosed cooling air channel comprises a plurality of ribs extending along a length thereof protruding from one of the first and second housing modules.

Assignees

• Sma Solar Technology Ag

Inventors

• Donth Andreas
• Dittmar Jens
• Lisitschew Swetlana

Classifications

• H05K7/20145 Primary

  Means for directing air flow, e.g. ducts, deflectors, plenum or guides · CPC title

• H05K7/20918 Primary

  the components being isolated from air flow, e.g. hollow heat sinks, wind tunnels or funnels · CPC title

• H05K7/20218

  using a liquid coolant without phase change in electronic enclosures (in cabinets of standardized dimensions H05K7/20536; in server cabinets H05K7/20709; in vehicle electronic casings H05K7/20845; in power control electronics H05K7/2089; in displays H05K7/20954) · CPC title