Polyphase stator for internally ventilated rotating electrical machine, and rotating electrical machine comprising such stator

An internally ventilated rotating electrical machine, in particular an alternator or alternator-starter for a motor vehicle, the rotating electrical machine comprising a polyphase stator, the polyphase stator comprising a stator body (14) provided with slots (30) and bearing a stator coil (12) comprising at least one winding per phase, the at least one winding comprising:

• a plurality of pairs of first and second lateral branches (140, 141) which are opposite one another, each one of the pairs of first lateral branches fitted in one of the slots (30) in the body (14) of the stator (13) and each of the pairs of second lateral branches is fitted in the other of the slots spaced from the one of the slots in the body (14);
• a plurality of connection heads (50 to 55) which extend on the exterior of, and from a first side of the stator body in order to form a first lead-out (43), and to connect to one another first ends of each of the pairs of first and second lateral branches;
• a plurality of connection feet (150 to 155) which are offset circumferentially relative to the plurality of connection heads, and extend on the exterior of, and from a second side of the stator body in order to form a second lead-out (42), and to connect to one another second ends of each of the pairs of lateral branches;
• at least one of the plurality of connection heads and the plurality of connection feet has a generally pointed form;
• an axial length of the at least one of the plurality of connection heads and the plurality of connection feet is between 15 and 20 mm;
• an outer diameter of the stator body (14) is between 110 and 150 mm;
• the at least one winding comprising two juxtaposed continuous wires extending together in parallel.

A polyphase stator for an internally ventilated rotating electrical machine, such as an alternator or alternator-starter of a motor vehicle, the polyphase stator comprising a stator body (14) provided with slots (30) and bearing a stator coil (12) comprising at least one winding per phase, the at least one winding comprising:

• a plurality of pairs of first and second lateral branches (140, 141) which are opposite one another, each one of the pairs of first lateral branches fitted in one of the slots (30) in the body (14) of the stator (13) and each of the pairs of second lateral branches is fitted in the other of the slots spaced from the one of the slots in the body (14);
• a plurality of connection heads (50 to 55) which extend on the exterior of, and from a first side of the stator body in order to form a first lead-out (43), and to connect to one another first ends of each of the pairs of first and second lateral branches;
• a plurality of connection feet (150 to 155) which are offset circumferentially relative to the plurality of connection heads, and extend on the exterior of, and from a second side of the stator body in order to form a second lead-out (42), and to connect to one another second ends of each of the pairs of lateral branches;
• at least one of the plurality of connection heads and the plurality of connection feet has a generally pointed form;
• an axial length of the at least one of the plurality of connection heads and the plurality of connection feet is between 15 and 20 mm;
• an outer diameter of the stator body (14) is between 110 and 150 mm;
• the at least one winding comprising two continuous wires in parallel;
• the first lateral branch of each of the pairs of first and second lateral branches occupies the same layer position in one of the slots (30) as the second lateral branch of each of the pairs of first and second lateral branches occupies in the other of the slots (30) of the stator body (14).