18507673. ELECTRIC MOTOR simplified abstract (Toyota Jidosha Kabushiki Kaisha)

ELECTRIC MOTOR

Organization Name

Toyota Jidosha Kabushiki Kaisha

Inventor(s)

Kei Ohta of Toyota-shi (JP)

Hideaki Miyazono of Kasugai-shi (JP)

Junya Kobayashi of Ama-shi (JP)

Junichi Deguchi of Toyota-shi (JP)

Hironori Asaoka of Okazaki-shi (JP)

Sho Okazaki of Toyota-shi (JP)

ELECTRIC MOTOR - A simplified explanation of the abstract

This abstract first appeared for US patent application 18507673 titled 'ELECTRIC MOTOR

Simplified Explanation

The electric motor described in the patent application includes a rotor core fixed to a shaft, a stator with coil ends at both ends, and first and second refrigerant passages for cooling purposes.

• The rotor core is fixed to a shaft.
• The stator includes coil ends at both ends.
• The first refrigerant passage is located in the shaft and outside the rotor core in the axial direction of the shaft.
• The second refrigerant passage extends inside the rotor core.
• The first outlet of the first refrigerant passage is on the shaft, with the refrigerant directed towards one of the coil ends.
• The rotor core is cooled by the refrigerant in the second passage, while the coil ends are cooled by the refrigerant in the first passage.

Potential Applications

The technology described in the patent application could be applied in various electric motor systems where efficient cooling of both the rotor core and the coil ends is essential.

Problems Solved

This technology solves the problem of overheating in electric motors by providing separate cooling passages for the rotor core and the coil ends, ensuring optimal performance and longevity of the motor.

Benefits

The benefits of this technology include improved cooling efficiency, increased motor performance, and extended lifespan due to effective heat dissipation.

Potential Commercial Applications

The technology could be utilized in various industries such as automotive, manufacturing, and robotics for applications requiring high-performance electric motors with efficient cooling systems.

Possible Prior Art

One possible prior art for this technology could be traditional electric motors with less efficient cooling systems that do not separate the cooling of the rotor core and coil ends.

How does the efficiency of the cooling system compare to traditional electric motor cooling systems?

The patent application does not provide specific data or comparisons regarding the efficiency of the cooling system in relation to traditional electric motor cooling systems.

Are there any specific materials or manufacturing processes required for implementing this cooling system in electric motors?

The patent application does not detail any specific materials or manufacturing processes necessary for implementing this cooling system in electric motors.

Original Abstract Submitted

An electric motor disclosed herein may comprise a rotor core fixed to a shaft, a stator, and first and second refrigerant passages. The stator may include coil ends at both ends. The first refrigerant passage may be provided in the shaft and arranged outside the rotor core in an axial direction of the shaft. The second refrigerant passage may extend inside the rotor core. A first outlet of the first refrigerant passage may be provided on the shaft, and an ejecting direction of refrigerant at the first outlet may be directed towards one of the coil ends. The rotor core is cooled by the refrigerant flowing in the second refrigerant passage. The coil ends are cooled by the refrigerant flowing in the first refrigerant passage, that is, the refrigerant that has not cooled the rotor.