| 摘要 |
A vehicle AC generator includes a stator having stator windings; front frame and rear frame, each rotatably supporting a rotor; a cooling fan fitted to the rotor; first polarity arm and second polarity arm configured to rectify currents of one polarity and another polarity, respectively; a rectifier device configured to rectify an alternating current generated in the stator windings; and a protective cover covering the rectifier device. The rectifier device includes a first heat dissipating plate having rectifier elements forming the first polarity arm, a second heat dissipating plate rectifier elements forming the second polarity arm, and a connection plate formed in waveform-like shape and disposed between the first and second heat dissipating plates, and a passage of a cooling air blown by the cooling fan formed between the first and second heat dissipating plates and between the second heat dissipating plate and the connection plate. |
| 主权项 |
1. A vehicle AC generator, comprising:
a stator comprising stator windings; a front frame and a rear frame, each rotatably supporting a rotor in the stator facing thereto via a space on an inner circumference of the stator; a cooling fan fitted to the rotor; a first polarity arm configured to rectify a current one polarity; a second polarity arm configured to rectify a current of another polarity; a rectifier device configured to rectify an alternating current generated in the stator windings; and a protective cover covering the rectifier device, the rectifier device comprising:
a first heat dissipating plate having a plurality of rectifier elements forming the first polarity arm;a second heat dissipating plate having a plurality of rectifier elements forming the second polarity arm; anda connection plate formed in a waveform-like shape and disposed between the first heat dissipating plate and the second heat dissipating plate;a first space, which serves as a passage of a cooling air blown by the cooling fan, formed between the first heat dissipating plate and the connection plate; anda second space, which serves as a passage of a cooling air blown by the cooling fan, formed between the second heat dissipating plate and the connection plate, wherein: the first space has a first space height indicating a distance between the first heat dissipating plate and the connection plate in the first space, and has a first space width indicating a length of the first space in a direction perpendicular to a plate-thickness direction of the connection plate, the second space has a second space height indicating a distance between the second heat dissipating plate and the connection plate in the second space, and has a second space width indicating a length of the second space in the direction perpendicular to the plate-thickness direction of the connection plate, and the first space height, the first space width, the second space height, and the second space width are adjusted such that a temperature of the plurality of rectifier elements forming the first polarity arm temperature of the plurality of rectifier elements forming the second polarity arm are balanced with each other. |
