Transformer and shielding structure

TW202632695AActive Publication Date: 2026-08-01DELTA ELECTRONICS INC(CN)
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Patent Information

Application Number
TW114103011
Authority / Receiving Office
TW · TW
Patent Type
Applications
Current Assignee / Owner
Filing Date
2025-01-23
Publication Date
2026-08-01
Estimated Expiration
2045-01-22

AI Technical Summary

Technical Problem

Conventional shielding methods for bobbin-less interleaved transformers are inadequate due to insufficient insulation distance, preventing effective connection of shielding copper foil between the primary and secondary sides, leading to poor electromagnetic interference (EMI) shielding.

Method used

A bent shielding structure is placed between the primary and secondary conductive units, forming a shield with shielding portions extending from both ends of the bent portion to cover main windings and metal sheets, connected to external components for improved EMI reduction.

Benefits of technology

The shielding structure effectively reduces electromagnetic interference and prevents excessively high induced voltages, enhancing the stability and safety of the power supply system while shortening the manufacturing process.

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Abstract

A transformer and a shielding structure are provided. The transformer comprises a primary conductive unit, a secondary conductive unit, a core set, and a shielding structure, wherein the secondary conductive unit is electromagnetically coupled to the primary conductive unit. At least one shielding portion of the shielding structure is disposed between at least one main winding of the primary conductive unit and the secondary conductive unit. Arranging the bent shielding structure between the primary conductive unit and the secondary conductive unit forms a shield and reduce electromagnetic interference.
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