Reactor and reactor manufacturing method

JP2026009524APending Publication Date: 2026-01-21TAMURA KK
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Patent Information

Application Number
JP2024109451
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-07-08
Publication Date
2026-01-21

AI Technical Summary

Technical Problem

Conventional reactors face challenges in dissipating heat effectively when handling currents of 500A or more, leading to temperature rises in the bus bar, which limits their application in high-current scenarios.

Method used

The reactor design incorporates a case with a cutout portion and a terminal block that forms part of the side wall, exposing a portion of the bus bar, allowing direct contact with a filled molding portion for enhanced heat dissipation, while integrating the terminal block and case through molded resin to ensure insulation and efficient heat transfer.

Benefits of technology

This design achieves high heat dissipation properties, enabling reactors to handle large currents without overheating, reduces size and cost, and improves manufacturing efficiency by simplifying the molding process.

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Abstract

To provide a reactor which prevents a bus bar from becoming high in temperature and has high heat dissipation, and to provide a method of manufacturing the same.SOLUTION: A reactor 10 includes a reactor body 1 having a coil 3, a case 5 housing the reactor body 1, a bus bar 7 connected to the coil 3, a terminal strip 6 covering the bus bar 7, and a filler molded part 8 provided in the case 5 and formed in a gap between the reactor body 1 and the case 5. The bus bar 7 has an exposed part 71 which is not covered with the terminal strip 7. The case 5 has the cutout portion 55 formed by cutting out a part of the sidewall 51 of the case 5, and the terminal strip 6 is provided in the cutout portion 55 and forms a part of the sidewall 51 of the case 5. At least a part of the exposed portion 71 is in contact with the filler molding portion 8.SELECTED DRAWING: Figure 3
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