Vehicle AC generator

Details Vehicle AC generator Vehicle AC generator

1995-09-08

1998-03-17

Laballe, Clayton E.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 64, H02K 1100, H02K 132

Patent

active

057290636

ABSTRACT:
A vehicle AC generator having a rotor located with in a main unit of the generator and journaled at a rotary shaft includes a rectifier unit 21, including a plurality of diodes, a circuit board, and positive-electrode and negative-electrode side cooling plates, for rectifying an AC current. A rear bracket covers at least one of the cooling plates. Preferably, the diodes are soldered to the cooling plates, which are formed in an arcuate-belt shape. Diode leads oppose each other diametrically; connection terminals of the circuit board are collectively spot-welded. The cooling plate is provided with radial cooling fins, allowing air to flow smoothly and, thus, cooling at a relatively high efficiency. The rectifier unit is mounted in the rear bracket, the cooling plate is directly connected to the bracket, and its heat is radiated therefrom. The diodes are arranged such that they overlap diametrically in the generator, allowing its axial length to be reduced.

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Abstract of Japanese Laid Open Patent No. Hei 4-26 346, Hideyuki Takahashi, published Jan. 29, 1992, Abstract of Japan (p. 111 E 1199).
Abstract of Japanese Laid Open Patent No. Hei 3-52545, Teruhiro Mizutani, published Mar. 6, 1991, Abstracts of Japan (p. 126 E 1069).

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