Multilayer Circuit Board Fuse Pattern for DC Current Breaking
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Solution Overview
Problem
Existing power converter technologies fail to effectively break DC current and prevent the scattering of fused material to other circuits during excessive current flow, leading to potential damage and malfunction.
Innovation Solution
A power converter with a multilayer circuit board incorporating a fuse pattern in the inner layer, surrounded by insulating members, and supported by a support member with fixation and support projections, which limits arc discharge and prevents material scattering by increasing arc voltage and providing structural support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a thin wiring pattern part is provided in the outer layer of the circuit board to break current, then current breaking is achieved, but the fused material scatters to other circuits and may damage electrical components
Solution Approach 1:
The fuse pattern is moved from the outer layer to the inner layer of the multilayer circuit board. This dimensional change confines the fused material within the board structure, preventing it from scattering to other circuits while maintaining the current breaking function through the inner layer fuse pattern.
Solution Approach 2:
The fuse pattern is nested within the multilayer circuit board structure, specifically in the inner layer surrounded by insulating members. This nesting confines the fuse pattern and its fused material within the board's internal structure, preventing external scattering while preserving the protective function.
2Reliability
If a thin wiring pattern part is used to break current, then current interruption is achieved, but arc discharge continuously generates and current continuously flows in DC current systems
Solution Approach 1:
Insulating members are introduced as intermediaries surrounding the fuse pattern in the inner layer. These insulating members restrict and control the arc discharge path, preventing continuous arc generation and enabling effective current interruption in DC systems by mediating the interaction between the fuse pattern and the surrounding environment.
Solution Approach 2:
The insulating members provide localized insulation around the fuse pattern, creating a controlled environment for arc discharge. This local quality enhancement restricts the arc to specific paths and prevents continuous discharge, enabling effective current breaking while maintaining system reliability.
3Object-affected harmful factors
If the fuse pattern is provided in the inner layer surrounded by insulating members, then fused material scattering is prevented, but device complexity increases
Solution Approach 1:
The fuse pattern, insulating members, and support structures are merged into a single integrated multilayer circuit board assembly. This combination achieves fused material containment while consolidating multiple functions into one structure, reducing overall device complexity despite the multilayer configuration.
Solution Approach 2:
The multilayer circuit board structure serves multiple functions simultaneously: it provides the fuse pattern for current breaking, insulating members for arc control and material containment, and support projections for structural stability. This multi-functionality reduces the need for separate components, offsetting the complexity increase.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively breaks DC current by limiting arc discharge and preventing the scattering of fused material, ensuring the power converter's integrity and reducing the risk of damage to other electrical components.
Implementation Method 1
a fuse pattern which fuses when excessive current flows
Implementation Method 2
the arc discharge is generated after the fuse pattern fuses by excess current
Data Source
AI summary
To provide a power converter and a breaking mechanism which can break a DC current and can suppress that a fused material scatter to other circuits at fusing, in the case where the breaking mechanism of excess current is formed by a circuit pattern of a circuit board. In a power converter, a supporting member is provided with a support body part; a fixation projection part which projected from the support body part and to which the multilayer circuit board was fixed; and a support projection part which projected from the support body part and supports an one side circuit board face, wherein the fuse pattern is provided in an inner layer, and the support projection part overlaps with at least one part of a fusing part of the fuse pattern, viewing in a normal direction of the circuit board face of the multilayer circuit board.