18267286. Rotating Electric Machine, Electric Wheel, and Vehicle simplified abstract (Hitachi, Ltd.)

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Rotating Electric Machine, Electric Wheel, and Vehicle

Organization Name

Hitachi, Ltd.

Inventor(s)

Akeshi Takahashi of Tokyo (JP)

Tetsuya Suto of Tokyo (JP)

Makoto Ito of Tokyo (JP)

Rotating Electric Machine, Electric Wheel, and Vehicle - A simplified explanation of the abstract

This abstract first appeared for US patent application 18267286 titled 'Rotating Electric Machine, Electric Wheel, and Vehicle

Simplified Explanation

The rotating electric machine described in the patent application includes a stator, a rotor, a rotor case, bearings, flow path formation bodies, and case parts that accommodate the bearings and allow the flow of refrigerant to cool the coils.

  • Stator with stator core and coils
  • Rotor with predetermined gap from stator
  • Rotor case holding the rotor
  • First and second bearings supporting the rotor case
  • First flow path formation body for refrigerant flow to coil end part
  • First case part accommodating first bearing and filling with refrigerant
  • Second flow path formation body for refrigerant flow to opposite coil end part
  • Second case part accommodating second bearing and filling with refrigerant

Potential Applications

The technology described in this patent application could be applied in various electric machines, such as motors and generators, that require efficient cooling systems to maintain optimal performance.

Problems Solved

This technology solves the problem of overheating in rotating electric machines by providing a reliable and efficient refrigerant flow system to cool the coils during operation.

Benefits

The benefits of this technology include improved performance and longevity of rotating electric machines, reduced maintenance costs, and increased energy efficiency due to effective cooling mechanisms.

Potential Commercial Applications

The technology could be utilized in industries that rely on electric machines, such as automotive, aerospace, and manufacturing, to enhance the reliability and efficiency of their equipment.

Possible Prior Art

One possible prior art could be the use of traditional cooling systems in rotating electric machines, which may not be as efficient or effective as the refrigerant flow system described in this patent application.

Unanswered Questions

How does the refrigerant flow system impact the overall efficiency of the rotating electric machine?

The patent application mentions the use of a refrigerant flow system for cooling the coils, but it does not provide specific data or analysis on how this system affects the efficiency of the machine.

Are there any potential drawbacks or limitations to implementing this technology in existing electric machines?

While the patent application highlights the benefits of the refrigerant flow system, it does not address any potential drawbacks or challenges that may arise from integrating this technology into current electric machine designs.


Original Abstract Submitted

This rotating electric machine comprises: a stator having a stator core around which a plurality of coils are wound; a rotor supported to be rotatable relative to the stator with a predetermined gap therebetween; a rotor case that holds the rotor; and a first bearing and a second bearing that rotatably support the rotor case. The rotating electric machine includes: a first flow path formation body that forms a first flow path through which a refrigerant flows to a coil end part protruding from the stator core; a first case part which forms an accommodation space of the first bearing, is connected to the first flow path of the first flow path formation body, and fills the accommodation space with the refrigerant; a second flow path formation body which forms a second flow path through which the refrigerant flows to a coil end part disposed on the opposite side from the coil end part in the axial direction; and a second case part which forms an accommodation space of the second bearing, is connected to the second flow path of the second flow path formation body, and fills the accommodation space with the refrigerant.