COOLING STRUCTURE OF GENERATOR MOTOR, AND GENERATOR MOTOR

摘要

The purpose of the present invention is to suppress insufficient cooling of a coil of a stator when a generator motor is cooled with a cooling medium. A cooling structure (100) of a generator motor has a protruding part (60) on a first housing (11) that is part of a casing of the motor generator. The protruding part (60) protrudes towards a coil (24C) of a stator (24) from an inner surface (11Ia) of an end portion in the direction of a rotation center axis (Zr) of an input/output shaft, thereby forming a coil-end cooling medium passage (62), which is a passage for the cooling medium between the coil (14C) and the protruding part (60). The protruding part (60) is arranged around the rotation center axis (Zr).