Integrated Magnetic Assembly for Stable Core Positioning
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Solution Overview
Problem
Existing integrated magnetic components face challenges in manufacturing, particularly in positioning common mode and differential mode magnetic cores to avoid saturation and ensure electrical insulation, with components often shifting during potting, leading to asymmetric gaps and insulation distances.
Innovation Solution
An integrated magnetic component design featuring a baseplate with an integrally formed cavity portion and sidewalls that surround the winding and cores, providing insulation and separation, with through-holes guiding coil terminations for secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If manual positioning methods are used during manufacturing, then flexibility in assembly is maintained, but manufacturing precision and consistency of insulation distances deteriorate
Solution Approach 1:
The baseplate serves as an intermediary component with pre-formed cavity portions and sidewalls that mediate between the manufacturing process and the final component positioning. These structural features act as physical guides and spacers that ensure consistent insulation distances without requiring manual measurement or adjustment during assembly.
Solution Approach 2:
The cavity portions and sidewalls are pre-formed in the baseplate before component assembly. This preliminary action of creating positioning structures in advance eliminates the need for manual positioning during manufacturing, ensuring consistent insulation distances are automatically maintained when components are installed.
2Adaptability or versatility
If components are allowed to move freely during potting, then assembly flexibility is maintained, but component positioning stability and insulation reliability deteriorate
Solution Approach 1:
The positioning function is extracted from the potting process itself and embodied in the baseplate's cavity portions and sidewalls. By separating the positioning function from the encapsulation process, components are constrained in their correct positions during potting while maintaining assembly flexibility before final installation.
Solution Approach 2:
The baseplate acts as a mediator between the components and the potting compound. The cavity portions and sidewalls provide physical constraints that prevent component movement during potting, while still allowing for flexible assembly operations before the potting process completes.
3Manufacturing precision
If additional positioning structures are added to the baseplate, then manufacturing precision and insulation reliability improve, but device complexity increases
Solution Approach 1:
The baseplate is designed as a multi-functional component that simultaneously provides mechanical support, electrical insulation, component positioning, and structural enclosure. The cavity portions and sidewalls serve multiple purposes: they position components, provide insulation barriers, and define the potting compound volume, thereby improving precision without proportionally increasing complexity.
Solution Approach 2:
Multiple functions are merged into the baseplate structure. The positioning features (cavity portions and sidewalls) are integrated with the baseplate's support and insulation functions, eliminating the need for separate positioning components and reducing overall device complexity while maintaining manufacturing precision.
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The invention concerns an integrated magnetic component (1), comprising a common mode inductance (4) formed by a common mode core (2) and winding (3) wound around the common mode core (2); a differential mode inductance formed by a differential mode core (5) and the winding (3), an axial direction (6) being defined as parallel to a substantial longitudinal extension (7) of the differential mode core (5); and a baseplate (10) which holds the common mode inductance (4) and the differential mode inductance, wherein the baseplate (10) integrally comprises a cavity portion (11) housing the differential mode core (5) and at least one sidewall (12) at least partially surrounding an outer surface (8) of the winding (3) and/or of the common mode core (2) opposite the differential mode core (5) along a radial direction (9) perpendicular to the axial direction (6).