Shielded Insulating Shell for Enhanced Electrical Performance
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Summary
Problems
Traditional shielded insulating shells for solid state transformers have complex structures, increased component count, and poor electrical performance due to separate insulation designs, leading to high electric field stress and low partial discharge resistance.
Innovation solutions
A shielded insulating shell with a first cavity featuring an inner and outer shielding layer, a structure comprising a sequence of shielding, insulating, and air gap layers, and an assembling gap forming a creepage path, which increases the creepage distance and reduces electric field stress by positioning the high voltage shielding layer inside the solid insulation or on its surface.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If separate insulation designs are used for phase-to-phase, shell-to-shell, and high-low voltage insulation, then insulation requirements are met, but device complexity and component count increase
Why choose this principle:
The patent combines multiple separate insulation structures (phase-to-phase insulation, shell-to-shell insulation, and high-low voltage insulation) into a single integrated shielded insulating shell. This unified structure performs all three insulation functions simultaneously, reducing the total number of components and simplifying the overall device architecture while maintaining reliable insulation performance across all required interfaces.
Principle concept:
If separate insulation designs are used for phase-to-phase, shell-to-shell, and high-low voltage insulation, then insulation requirements are met, but device complexity and component count increase
Why choose this principle:
The shielded insulating shell is designed as a multi-functional component that provides phase-to-phase insulation, shell-to-shell insulation, and high-low voltage insulation all within a single structure. This universal design eliminates the need for multiple dedicated insulation components, thereby reducing device complexity while ensuring all insulation requirements are met.
Application Domain
Data Source
AI summary:
A shielded insulating shell with a first cavity featuring an inner and outer shielding layer, a structure comprising a sequence of shielding, insulating, and air gap layers, and an assembling gap forming a creepage path, which increases the creepage distance and reduces electric field stress by positioning the high voltage shielding layer inside the solid insulation or on its surface.
Abstract
The present disclosure discloses a shielded insulating shell and an electronic device. The shielded insulating shell includes a shell body provided with a first cavity, with an inner shielding layer near the first cavity and an outer shielding layer far away from the first cavity being formed on the shell body; a first structure formed on the first cavity, and formed by assembling to comprise at least a first shielding layer, a first insulating layer, a first air gap layer, a second insulating layer, and a second shielding layer arranged sequentially from an inner side to an outer side of the first cavity; and an assembling gap formed on the first structure, which cooperates with the first air gap layer to form a creepage path on the first structure that extends from the inner shielding layer to the outer shielding layer.