COIL DEVICE AND ON-BOARD DEVICE

The coil device for rail vehicles addresses the size and support challenges by integrating a cast or injection-molded housing within a channel for air-cooled heat dissipation, reducing the device's size and enhancing structural stability.

DE112023006763T5Pending Publication Date: 2026-06-03MITSUBISHI ELECTRIC CORP
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Patent Information

Authority / Receiving Office
DE · DE
Patent Type
Applications
Current Assignee / Owner
MITSUBISHI ELECTRIC CORP
Filing Date
2023-08-04
Publication Date
2026-06-03

AI Technical Summary

Technical Problem

In-vehicle devices for rail vehicles, such as power conversion devices, require larger and heavier coil assemblies due to higher current demands, leading to increased size and complexity, which affects engine and other components.

Method used

A coil device with a housing made of a cast or injection-molded component is attached to a channel within the vehicle, allowing air flow for cooling without the need for additional support structures, reducing the overall size and enhancing heat dissipation.

Benefits of technology

The coil device effectively dissipates heat through air flow, reducing the size and susceptibility to vibrations, and does not require additional support elements, thus minimizing the overall device size and improving structural integrity.

✦ Generated by Eureka AI based on patent content.

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Abstract

A coil device (20) comprises a coil (23) wound around its central axis and a housing (21) having a cavity to accommodate the coil (23) within the cavity, and which is made of a cast or injection-molded component. The housing (21) is received in a channel (11) such that at least a portion of a bottom surface (21a) of the housing (21) abuts a first wall surface (11a), which is an inner surface of the channel (11) located at the bottom in the vertical direction. The channel (11) extends in a direction that intersects the vertical direction within the housing of an in-vehicle device and defines a space into which air flows from outside the housing. The housing (21) is attached to the first wall surface (11a) and a second wall surface (116), which is an inner surface of the channel (11) located at the top in the vertical direction.
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Citation Information

Patent Citations

  • Electronic circuit device and rotary electric machine including the same

    JP2018026508A

  • 2018-026508