Rotor manufacturing method, rotor, rotating electric machine, and automobile

Abstract

The present invention provides a method for manufacturing a rotor that can accurately acquire temperature information of a predetermined part of a magnet, as well as a rotor, a rotating electric machine, and an automobile. [Solution] A method for manufacturing a rotor 20 comprising a rotor core 23, a permanent magnet 25 disposed in the gap S of the rotor core 23, and an element unit 50 that transmits temperature information relating to the temperature of the permanent magnet 25, wherein the element unit 50 has a temperature-sensing element 51 whose electrical resistance changes according to the temperature of the permanent magnet 25, and a coil 52 electrically connected to the temperature-sensing element 51, and the method includes an attachment step of attaching the element unit 50 to the rotor core 23, in which the temperature-sensing element 51 is attached so as to contact the side surface 25A of the permanent magnet 25 in the gap S of the rotor core 23.

Claims

1. A method for manufacturing a rotor, comprising a rotor core, magnets disposed within the gaps of the rotor core, and a temperature information transmitting device for transmitting temperature information relating to the temperature of the magnets, The temperature information transmitting device comprises a temperature-sensing element whose electrical resistance changes according to temperature, and a coil electrically connected to the temperature-sensing element. The process includes attaching the temperature information transmitting device to the rotor core, A method for manufacturing a rotor, wherein in the mounting step, the temperature-sensing element is mounted so as to contact the side surface of the magnet in the gap of the rotor core.

2. In the aforementioned mounting process, A resin member for positioning the temperature-sensing element such that the temperature-sensing element contacts the side surface of the magnet, wherein the thermally expandable resin member is provided in the gap. The method for manufacturing a rotor according to claim 1, wherein the thermal expansion of the resin member causes the temperature-sensing element to come into contact with the side surface of the magnet.

3. In the aforementioned mounting process, A metal member for positioning the temperature-sensing element so that it contacts the side surface of the magnet, wherein the elastic metal member is provided within the gap. The method for manufacturing a rotor according to claim 1, wherein the temperature-sensing element is brought into contact with the side surface of the magnet by the elastic force of the metal member.

4. A method for manufacturing a rotor according to claim 1 or 2, wherein the temperature sensing element and the coil are electrically connected using circuit board wiring or wire wrapping.

5. A method for manufacturing a rotor according to claim 1 or 2, comprising a sealing step to obtain the temperature information transmitting device in which the coil is sealed with a sealing member.

6. Rotor core and A magnet is placed in the gap of the rotor core, The system includes a temperature information transmitting device that transmits temperature information relating to the temperature of the magnet, The temperature information transmitting device comprises a temperature-sensing element whose electrical resistance changes according to temperature, and a coil electrically connected to the temperature-sensing element. The temperature sensing element is in contact with the side surface of the magnet in the gap of the rotor core, and the rotor.

7. The system includes a positioning member for positioning the temperature-sensing element so that it contacts the side surface of the magnet, The rotor according to claim 6, wherein the positioning member presses the temperature sensing element toward the magnet.

8. The rotor according to claim 6, Stator and, A rotating electric machine comprising a temperature information receiving device attached to the stator and receiving the temperature information transmitted from the temperature information transmitting device.

9. An automobile comprising the rotating electric machine described in claim 8.

Images