Electrical circuit arrangement having a capacitor with a housing function

• US 10,306,794 B2
• Filed: 08/08/2016
• Issued: 05/28/2019
• Est. Priority Date: 09/23/2015
• Status: Active Grant

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Bigl, Thomas, Hensler, Alexander, Neugebauer, Stephan, Pfefferlein, Stefan
• Primary Examiner(s): Bui, Hung S.
• Application Number:
  US15/762,451
• Publication Number:
  US 20180270979A1
• Time in Patent Office: 1,023 Days
• Field of Search: 361821
• CPC Class Codes: H01G 2/08 Cooling arrangements; Heating arrangements; Ventilating arrangements
• CPC Class Codes: H01G 2/10 Housing; Encapsulation
• CPC Class Codes: H01G 4/28 Tubular capacitors
• CPC Class Codes: H01G 4/32 Wound capacitors
• CPC Class Codes: H01G 4/40 Structural combinations of fixed capacitors with other electric elements, the structure mainly consisting of a capacitor, e.g. RC combinations
• CPC Class Codes: H01G 9/151 with wound foil electrodes
• CPC Class Codes: H01G 9/28 Structural combinations of electrolytic capacitors, rectifiers, detectors, switching devices with other electric components not covered by this subclass
• CPC Class Codes: H02M 5/458 using semiconductor devices only
• CPC Class Codes: H02M 7/003 Constructional details, e.g. physical layout, assembly, wiring or busbar connections
• CPC Class Codes: H05K 1/181 associated with surface mounted components
• CPC Class Codes: H05K 2201/10015 Non-printed capacitor
• CPC Class Codes: H05K 2201/10189 Non-printed connector
• CPC Class Codes: H05K 2201/1075 Shape details
• CPC Class Codes: H05K 7/1427 Housings
• CPC Class Codes: H05K 7/1432 specially adapted for power drive units or power converters
• CPC Class Codes: H05K 7/14329 specially adapted for the configuration of power bus bars

Abstract

An electrical circuit arrangement has at least one capacitor (1) and at least one other circuit part (4) electrically cooperating with the first capacitor (1). The first capacitor (1) is part of a first capacitor arrangement (2) which annularly surrounds the cavity (3). The other circuit part (4) is provided at least partially within the cavity (3) and is electrically connected to the first capacitor (1). The first capacitor arrangement (2) has fastening elements (7) by means of which the circuit arrangement can be mechanically fastened to a holding element (8).

Claims

1. An electrical circuit arrangement, comprising:

a first capacitor arrangement including a first capacitor configured to surround a cavity in an annular manner, and a securing element for mechanically securing the circuit arrangement to a separate holding element;

a circuit part held in a mechanically stable manner by the first capacitor arrangement and arranged at least partially within the cavity, said circuit part being electrically connected to the first capacitor and including a circuit carrier, on which electrical and/or electronic components are arranged,

said first capacitor arrangement including a contact element arranged on an interior facing the cavity or on an exterior facing away from the cavity for making electrical contact of the first capacitor with the circuit part,

said circuit part including a spring contact configured so as to be pressable against the contact element and thereby make electrical contact with the contact element.

2. The circuit arrangement of claim 1, wherein the first capacitor arrangement forms a convex, overall curvilinear curve in cross-section, such as a configuration in the shape of a circle, an ellipse or an oval.

3. The circuit arrangement of claim 1, wherein the first capacitor arrangement forms a polygon in cross-section.

4. The circuit arrangement of claim 1, wherein the polygon has a number of corners between three and twelve, in particular between five and ten.

5. The circuit arrangement of claim 1, wherein the first capacitor is embodied as a winding capacitor.

6. The circuit arrangement of claim 1, wherein the first capacitor arrangement includes a second capacitor, preferably embodied as a winding capacitor and arranged in radially surrounding relationship to the first capacitor or configured to rest on the first capacitor radially on an inside.

7. The circuit arrangement of claim 1, wherein the first capacitor arrangement has an abutting surface and includes a contact point on the abutting surface for electrically contacting the first capacitor by the circuit part.

8. The circuit arrangement of claim 1, wherein the first capacitor arrangement has an exterior formed with a cooling surface that projects radially outward.

9. The circuit arrangement of claim 1, wherein the first capacitor arrangement has a rated break point.

10. The circuit arrangement of claim 1, embodied as an intermediate circuit converter, to which a single- or multi-phase alternating voltage is supplied by way of a rectifier and from which a single- or multi-phase alternating voltage is output by way of an inverter, and further comprising an intermediate circuit capacitor arranged between the rectifier and the inverter, wherein the circuit part comprises at least one of the rectifier and the inverter of the intermediate circuit converter, with the first capacitor being an integral part of the intermediate circuit capacitor.

11. The circuit arrangement of claim 1, further comprising a second capacitor arrangement attached to the first capacitor arrangement and secured hereto, said second capacitor arrangement surrounding the cavity in an annular manner and including a first capacitor which interacts electrically with the circuit part, said circuit part being electrically connected to the first capacitor of the second capacitor arrangement.

12. The circuit arrangement of claim 11, wherein the second capacitor arrangement forms a convex, overall curvilinear curve in cross-section such as a configuration in the shape of a circle, an ellipse or an oval.

13. The circuit arrangement of claim 11, wherein the second capacitor arrangement forms a polygon in cross-section.

14. The circuit arrangement of claim 13, wherein the polygon has a number of corners between three and twelve, in particular between five and ten.

15. The circuit arrangement of claim 11, wherein the first capacitor of the second capacitor arrangement is embodied as a winding capacitor.

16. The circuit arrangement of claim 11, wherein the second capacitor arrangement includes a second capacitor, preferably embodied as a winding capacitor and arranged in radially surrounding relationship to the first capacitor of the second capacitor arrangement or configured to rest on the first capacitor of the second capacitor arrangement radially on an inside.

17. The circuit arrangement of claim 11, wherein the second capacitor arrangement has an abutting surface and includes a contact point on the abutting surface for electrically contacting the first capacitor of the second capacitor arrangement by the circuit part.

18. The circuit arrangement of claim 11, wherein the second capacitor arrangement has a rated break point.

19. The circuit arrangement of claim 11, embodied as an intermediate circuit converter, to which a single- or multi-phase alternating voltage is supplied by way of a rectifier and from which a single- or multi-phase alternating voltage is output by way of an inverter, and further comprising an intermediate circuit capacitor arranged between the rectifier and the inverter, wherein the circuit part comprises at least one of the rectifier and the inverter of the intermediate circuit converter, with the first capacitor of the second capacitor arrangement being an integral part of the intermediate circuit capacitor.