Rectifier assembly for automotive alternator

H - Electricity – 02 – M

Patent

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Details

H02M 7/06 (2006.01) H01L 25/11 (2006.01) H02K 11/04 (2006.01) H02M 7/00 (2006.01) H02K 11/02 (2006.01)

Patent

CA 2207902

A poly-phase rectifier assembly (100) for an alternating current generator includes five heat sinks, three of which are compression spring-loaded (130) to form series electrical circuits to the poly-phase stator windings. The other two heat sinks (101, 102) are separated by a crush-proof, phenolic type, insulating gasket (103), and carry a plurality of semiconductor button-type diodes. The stator sinks are cupped (121) to position compression springs, and are slotted (170) for heat transfer. The stator sinks extend above the slotted positive heat sink into the cooling air flow area. A second embodiment utilizes back-to- back diodes, compression spring-loaded into a positive heat sink and a negative heat sink. A cupped stator heat sink forms a nest and provides series connection for the stator poly-phase windings. A plastic assembly supports a capacitor. I

Ensemble redresseur pluriphasé (100) pour alternateur comportant cinq dissipateurs de chaleur dont trois chargés par des ressorts (130) forment des circuits électriques en série avec les enroulements pluriphasés du stator, et dont les deux autres (101, 102), séparés par des joints d'isolation phénoliques (103) résistant à l'écrasement, portent plusieurs diodes capsules semi-conductrices. Les dissipateurs du stator sont munis de coupelles (121) pour permettre de positionner les ressorts de compression et de fentes (170) pour favoriser la dissipation de chaleur; ils saillent au dessus du dissipateur positif à fentes et plongent dans le flux d'air de refroidissement. Dans une seconde variante, utilisant des diodes placées dos à dos, les ressorts de compression chargent un dissipateur positif et un dissipateur négatif. Un dissipateur statorique muni de coupelles forme une cavité et assure des connexions en série avec les enroulements pluriphasés du stator. Un condensateur est monté sur un support plastique.

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