Patent ID: 8242646

Claim:
A rotating electric machine comprising: a rotation shaft provided so as to be rotatable; a core body secured to said rotation shaft; a permanent magnet embedded in said core body; and an end plate provided so as to be opposed to an axial end surface of said core body, wherein a first coolant channel is formed in said rotation shaft to allow a coolant to flow therethrough, a second coolant channel is formed between said end plate and said axial end surface of said core body to communicate with said first coolant channel, a partition wall that partitions said second coolant channel in a circumferential direction and a path wall that guides the coolant in said second coolant channel toward an outer peripheral edge region of said axial end surface where said permanent magnet is placed are formed inside said second coolant channel, said path wall extends to reach an outer periphery of said end plate and is formed backward of said partition wall in a rotation direction along said partition wall, a discharge port is formed at the outer periphery of said end plate to discharge the coolant from said second coolant channel, and the coolant flows backward in the rotation direction from a radially outward end of said path wall and then flows through said outer periphery of said end plate in the circumferential direction to reach said discharge port.