Rotating electric machines, motors, rotors, and permanent magnet motors

The rotor design with a carbon fiber and metal composite intermediate member addresses output density and heat management issues, enhancing power density and efficiency in rotating electrical machines.

JP7875087B2Active Publication Date: 2026-06-17KK TOSHIBA
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
KK TOSHIBA
Filing Date
2022-10-03
Publication Date
2026-06-17

AI Technical Summary

Technical Problem

Existing rotating electrical machines face challenges in improving output density and managing centrifugal forces and heat generation at high rotational speeds.

Method used

The rotor design incorporates an intermediate member with a carbon fiber-containing portion and a metal-containing portion, which enhances strength and thermal conductivity, reducing centrifugal forces and heat buildup, while a stator with a coil and stator core generates magnetic flux for rotation.

Benefits of technology

The design achieves increased power density and reduced temperature rise, making the rotating electric machine lighter and more efficient by minimizing damage and stress on components.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

To provide a rotary electric machine, a motor, a rotor, and a permanent magnet motor, which can improve power density.SOLUTION: A rotary electric machine according to an embodiment of the present invention comprises a rotor and a stator. The rotor includes a revolving shaft, a first core, a permanent magnet, and an intermediate member. The revolving shaft extends in a first direction. The first core is arranged around the revolving shaft in a first plane perpendicular to the first direction. The permanent magnet is arranged around the first core in the first plane. The intermediate member is arranged between the revolving shaft and the first core. The intermediate member comprises a first part including carbon fibers and a second part which is adjacent to the first part in the first direction and includes a metal. The stator is arranged around the rotor in the first plane.SELECTED DRAWING: Figure 2
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