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US 5,694,313 AGranted
Rectifying unit for AC generator
AssigneeNippondenso Co., Ltd.
InventorTooru Ooiwa
Life of this patent
Estimating the term…
Abstract
A rectifying unit for an alternator is composed of AC input terminal and cooling fins connected to output ends (including a neutral point) of a multi-phase stator coil, a negative-poled cooling fin which is grounded and fixed to a rear cover of the alternator, diodes whose anodes are soldered to the AC input fins and whose cathodes are welded to a positive output terminal, and diodes whose anodes are soldered to a negative-poled fin and whose cathodes are welded to the AC input fins.
Claims18
A rectifying unit for an AC generator having a stator coil with output ends comprising:
- a plurality of AC input terminal members respectively connected to said output ends of said stator coil;
- a first DC output terminal member;
- a second DC output terminal member;
- a plurality of first rectifying elements respectively mounted on said AC input terminal members, each of said first rectifying elements having an input electrode directly connected to one of said AC input terminal members and an output electrode directly connected to said first DC output terminal member;
- and
- a plurality of second rectifying elements mounted on said second DC output terminal member, each of said second rectifying elements having an input electrode directly connected to said second DC output terminal member and an output electrode directly connected to one of said AC input terminal members, said second rectifying elements having the same structure and polarity as said first rectifying elements;
- wherein
- said first DC output terminal member comprises a single conductor member disposed near said first rectifying elements;
- and
- said second DC output terminal member comprises a single cooling fin.
7 more elements
A rectifying unit for an AC generator having a housing, a multi-phase stator coil and a cooling fan comprising:
- a positive output member;
- a negative output member having a generally horseshoe-shape cooling fin directly fixed to said housing;
- a plurality of AC input terminals of generally sectorial shape disposed in a radial plane near said cooling fan in opposed relation to said negative output member and connected respectively to output ends of said multi-phase stator coil;
- a plurality of first rectifying elements each of which is mounted on one of said AC input terminals and has an input electrode connected to said one of said AC input terminals and an output electrode connected to said positive output member;
- and
- a plurality of second rectifying elements each of which is mounted on said negative output member and has an input electrode connected to said negative output member and an output electrode connected to one of said AC input terminals, said second rectifying elements having the same structure and polarity as said first rectifying elements;
- wherein
- said positive output member comprises a single member disposed near said first rectifying elements, and
- said negative output terminal comprises a single cooling fin.
6 more elements
A rectifying unit for an AC generator having a stator coil comprising:
- a plurality of AC input terminals respectively connected to output ends of said stator coil;
- a first DC output terminal;
- a second DC output terminal;
- a plurality of first rectifying elements respectively mounted on said AC input terminals and each of said first rectifying elements having an input electrode connected to a respective one of said AC input terminals and an output electrode connected to said first DC output terminal;
- and
- a plurality of second rectifying elements mounted on said second DC output terminal and each of said second rectifying elements having an input electrode connected to said second DC output terminal and an output electrode connected to a respective one of said AC input terminals;
- wherein said AC input terminals and said second DC output terminal are respectively disposed on a single cooling fin through an insulating member.
4 more elements
A rectifying unit for an AC generator having a stator coil comprising:
- a plurality of AC input terminals respectively connected to output ends of said stator coil;
- a first DC output terminal;
- a second DC output terminal;
- and
- a plurality of same-type semiconductor elements, each of said semiconductor elements having a control gate and a pair of electrodes disposed on opposite sides thereof;
- wherein
- half of said semiconductor elements are respectively mounted and connected to said AC input terminals by one side of said semiconductor elements and directly connected to said first DC output terminal by the other side of said semiconductor elements;
- the other half of said semiconductor elements are mounted on and directly connected to said second DC output terminal by one side of said semiconductor elements and respectively connected to said AC input terminals by the other side of said semiconductor elements;
- and
- said first DC output terminal is disposed near said half of said semiconductor elements.
7 more elements
Dependencies are inferred from the claim text.