Method for interconnecting electronic power modules of a rotary electric machine and assembly of interconnected power modules obtained using said method

A technology for rotating electrical machines and power modules, which is applied in the direction of electric components, electrical components, and the manufacture of motor generators, which can solve the problems of increasing the number of mechanical parts, increasing the complexity, and increasing the cost and price.

Active Publication Date: 2013-07-31
VALEO EQUIP ELECTRIC MOTEUR
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] These arrangements increase the complexity, in particular of the interconnection structure which is the subjec

Method used

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  • Method for interconnecting electronic power modules of a rotary electric machine and assembly of interconnected power modules obtained using said method
  • Method for interconnecting electronic power modules of a rotary electric machine and assembly of interconnected power modules obtained using said method
  • Method for interconnecting electronic power modules of a rotary electric machine and assembly of interconnected power modules obtained using said method

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Embodiment Construction

[0036] Hereinafter, without limiting the scope of the invention in any way, the background will be the preferred application of the invention, unless stated otherwise, namely, the case of an alternator with synchronous rectification of the double three-phase type, including three Power modules, each power module comprising the electronic power circuits of the two branches of the rectifier bridge and the control circuits for these electronic power modules.

[0037]Also in the following, identical or at least similar elements in the figures bear the same reference numerals and will only be described again when necessary.

[0038] Before describing the invention, it is advantageous to refer to figure 1 with 2 A brief review of the general structure of this type of motor as well as an example of the electronic power circuits of the bridge rectifier and an example of the electronic circuits used to control these circuits.

[0039] figure 1 An example of the structure of a rota...

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Abstract

The invention relates to a method for interconnecting electronic power modules of a polyphase rotary electric machine. According to the invention, the power modules are disposed in open cavities of a heat sink, said power modules comprising substrates on which are provided MOSFETs of a synchronous rectifier bridge and integrated control circuits. The method comprises the production of: a planar connector (6) including at least one layer of conductive traces (64); a plurality of interconnection elements (512) arranged in multiple geometric formations and ultrasonically welded or brazed (S2) directly to the substrates (51) and/or the MOSFETs; and openings (65) in the planar connector (6) allowing the free passage of the upper ends (5120) of the connection elements (512) and a mechanical contact with the conductive traces (64). The electrical connections are obtained by means of laser (8) transmission welding (S1) or electric resistance welding.

Description

technical field [0001] The present invention relates generally to the field of rotating electric machines, in particular for motor vehicles. [0002] More particularly, it applies to alternators with synchronous rectification equipped with electronic power modules, and more particularly to polyphase alternators. Background technique [0003] For the sake of conceptual clarity, reference will be made below to a preferred application of the invention, and it will be assumed that the alternator is of the three-phase type, but this does not in any way limit the scope of the invention. [0004] By way of example, French patent FR2886477B1 entitled "Interconnection part for a signal for a rotary electrical machine" describes a rotating electrical machine of the alternator type, including electronic power devices. These electronic power devices are in the form of modules of the so-called mechatronic type, comprising a bridge of power transistors using MOSFET technology and guarant...

Claims

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Application Information

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IPC IPC(8): H02K11/00H02K11/04
CPCH02K11/048H02K15/00H02K11/0073Y10T29/49009H02K11/05H02K11/30H02K19/22H02K11/049H05K7/209H02K2211/03
Inventor R.赛登宾德B.拉法布里F.陶夫隆C.德里普雷D.德尔普雷斯M.滕奇尼R.吉拉德R.洛佩兹J.温
Owner VALEO EQUIP ELECTRIC MOTEUR
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