The present invention discloses a
coolant gallery structure fixedly connected with a motor
stator. The
coolant gallery structure comprises a case, a
stator, a water-cooling flow channel and
pipe joints, the water-cooling flow channel is a tubular structure, the tubular structure is provided with a liquid inlet, a liquid output and a
helical water-cooling flow channel, the inner wall of the case isprovided with a location step, the water-cooling flow channel is arranged in the case, the bottom portion of the water-cooling flow channel is abutted against the location step, a
stator penetrates the water-cooling flow channel, the stator is in
interference fit with the water-cooling flow channel, and the two
pipe joints both pass through the side wall of the case and are in corresponding threaded connection with the liquid outlet and the liquid inlet of the water-cooling flow channel. The water-cooling flow channel is taken as an independent part, prior to the
stator coil being put into asilicon steel sheet groove, the
stator coil is in
interference fit with the
silicon steel sheet groove, and the size of the water-cooling flow channel is approximate to the axial direction size of thestator so that the putting of the
stator coil is not influenced.