Honda Motor Co., Ltd.
Electric rotary machine

Abstract:

An electric rotary machine includes a rotor and a stator. The rotor includes a rotor shaft having a refrigerant flow path therein, a rotor core, a plurality of magnet pole portions, a first end plate and a second end plate. The stator includes a first coil end located radially outside the first end plate, and a second coil end located radially outside of the second end plate. The first end plate includes a first refrigerant discharge hole, a first groove portion communicating with the refrigerant flow path and communicating with the first refrigerant discharge hole, and a second groove portion communicating with the refrigerant flow path and the core through hole. The second end plate includes a second refrigerant discharge hole communicating with the refrigerant flow path via the core through hole and the second groove portion, without directly communicating with the refrigerant flow path.