Patent ID: 8344298

Claim:
A method for heating a stator formed such that a conducting coil is mounted on a stator core formed of laminated steel sheets, the method comprising: disposing a first induction coil near one of the coil end parts of the stator and a second induction coil near the other coil end part, energizing the first induction coil and the second induction coil to induction heat the coil end parts of the stator prior to a resin-molding process or a varnish applying process, wherein the method further includes: moving the first induction coil in an axial direction of the stator with a first movement device; and moving the second induction coil in the axis direction of the stator with a second coil movement device, measuring temperatures of the coil end part and the stator core of the stator with a temperature measuring device, and based on a temperature difference between the coil end part and the stator core measured by the temperature measuring device, moving the first induction coil with the first coil movement device and the second induction coil with the second coil movement device.