Rotary electrical machine with improved power electronics

Patent metadata

Field	Value
Publication number	US-10491079-B2
Application number	US-201715605504-A
Country	US
Kind code	B2
Filing date	May 25, 2017
Priority date	Jun 14, 2016
Publication date	Nov 26, 2019
Grant date	Nov 26, 2019

Abstract

The invention relates mainly to a rotary electrical machine for a motor vehicle, comprising:
a heat dissipater ( 65 ); two power modules ( 50 ) integrated in the heat dissipater ( 65 ), each comprising rectifier elements ( 53 ) which form three rectifier bridge arms ( 52 ), connection terminals ( 58 ) associated with the rectifier bridge arms ( 52 ), and a control unit which can control the rectifier bridge arms; and a connector ( 61 ) which establishes electrical connections, in particular between the terminals ( 58 ) for connection of the power modules ( 50 ) and the phase outputs of the rotary electrical machine.

First claim

The invention claimed is:

1. A rotary electrical machine ( 10 ) for a motor vehicle, the rotary electrical machine ( 10 ) comprising:
a heat dissipater ( 65 );
two power modules ( 50 ) integrated in the heat dissipater ( 65 ), each power module comprising rectifier elements ( 53 ) forming three rectifier bridge arms ( 52 ), connection terminals ( 58 ) associated with the rectifier bridge arms ( 52 ), and a control unit ( 51 ) operable to control the rectifier bridge arms ( 52 ); and
a connector ( 61 ) configured to establish electrical connections between the connection terminals ( 58 ) for connection of the power modules ( 50 ) and phase outputs of the rotary electrical machine ( 10 ).

2. The rotary electrical machine according to claim 1 , wherein each bridge arm ( 52 ) is formed by two of the rectifier elements ( 53 ).

3. The rotary electrical machine according to claim 1 , further comprising a regulation module ( 62 ) configured to regulate a voltage applied to a rotor winding ( 31 ), wherein the regulation module is integrated in the heat dissipater ( 65 ).

4. The rotary electrical machine according to claim 3 , wherein the regulation module ( 62 ) comprises projecting terminals ( 63 ) welded on connection areas ( 81 ) of the connector ( 61 ).

5. The rotary electrical machine according to claim 3 , wherein the regulation module ( 62 ) is positioned in a corresponding receptacle ( 67 ) provided in the heat dissipater ( 65 ).

6. The rotary electrical machine according to claim 5 , wherein a layer of adhesive ( 68 ) is interposed between the regulation module ( 62 ) and the heat dissipater ( 65 ).

7. The rotary electrical machine according to claim 1 , further comprising a regulation module ( 62 ) configured to regulate a voltage applied to a rotor winding ( 31 ), wherein the regulation module ( 62 ) is integrated in the connector ( 61 ).

8. The rotary electrical machine according to claim 7 , wherein the connector ( 61 ) comprises a cavity ( 82 ) configured to receive the regulation module ( 62 ), and wherein receipt pins ( 86 ) situated in extension of tracks ( 60 ) of the connector ( 61 ) open into the cavity ( 82 ) in order to ensure interconnection with the regulation module ( 62 ).

9. The rotary electrical machine according to claim 1 , wherein each of the connector ( 61 ) and the heat dissipater has a closed periphery delimiting an opening ( 71 ).

10. The rotary electrical machine according to claim 1 , wherein the connector ( 61 ) comprises two assemblies ( 94 ) of connection lugs ( 95 ) configured to ensure a connection with the phase outputs, wherein the two assemblies ( 94 ) extend according to two angular sectors which are distinct from one another, and wherein each of the two assemblies ( 94 ) includes a plurality of the connection lugs ( 95 ).

11. The rotary electrical machine according to claim 1 , wherein the connector ( 61 ) comprises an assembly ( 94 ) of connection lugs ( 95 ) extending according to the same angular sector in order to ensure a connection with the phase outputs.

12. The rotary electrical machine according to claim 1 , further comprising an added-on brush-holder ( 38 ) secured on the connector ( 61 ) by screwing of a connection interface ( 96 ).

13. The rotary electrical machine according to claim 1 , wherein the connector ( 61 ) is secured on the heat dissipater ( 65 ) by means of screws establishing a connection with a positive terminal ( 75 ).

14. The rotary electrical machine according to claim 11 , wherein the assembly ( 94 ) of the connector ( 61 ) and the heat dissipater ( 65 ) are secured on a bearing ( 18 ) of the electrical machine by screws establishing a connection between tracks ( 60 ) of the connector ( 61 ) and ground of the rotary electrical machine.

15. The rotary electrical machine according to claim 1 , wherein the connection terminals ( 58 ) of the power modules ( 50 ) are welded on corresponding connection areas ( 81 ) of the connector ( 61 ).

16. The rotary electrical machine according to claim 2 , further comprising a regulation module ( 62 ) configured to regulate a voltage applied to a rotor winding ( 31 ), wherein the regulation module is integrated in the heat dissipater ( 65 ).

17. The rotary electrical machine according to claim 4 , wherein the regulation module ( 62 ) is positioned in a corresponding receptacle ( 67 ) provided in the heat dissipater ( 65 ).

18. The rotary electrical machine according to claim 2 , further comprising a regulation module ( 62 ) configured to regulate a voltage applied to a rotor winding ( 31 ), wherein the regulation module ( 62 ) is integrated in the connector ( 61 ).

Assignees

• Valeo Equip Electr Moteur

Inventors

• Jugovic Svetislav
• Tauvron Fabrice
• Boudjemai Farouk
• Ragaine Pierre-François
• De Lamarre Laurent
• Tempez Hugues

Classifications

• H02K11/05

  Rectifiers associated with casings, enclosures or brackets · CPC title

• H02K11/33

  Drive circuits, e.g. power electronics (H02K11/38 takes precedence) · CPC title

• H02K5/225

  Terminal boxes or connection arrangements (specially adapted for submersible motors H02K5/132) · CPC title

• H02K11/049 Primary

  Rectifiers associated with stationary parts, e.g. stator cores · CPC title

• H02K5/18

  with ribs or fins for improving heat transfer · CPC title