Integrated Magnetic Core for Resonant and Mutual Inductance

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Solution Overview

Problem

Existing resonant circuits require all three devices - transformer, resonant inductor, and mutual inductor, leading to a large volume due to their combined size.

Innovation Solution

A magnetic device integrating transforming, resonance, and mutual inductance capabilities by winding primary coils around multiple magnetic sections, utilizing leakage inductance as a resonant inductor and combining transformers and mutual inductors on a single device.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If transformer, resonant inductor and mutual inductor are provided separately in the resonant circuit, then the circuit can operate normally with all required functions, but the total volume of the magnetic device becomes large

Engineering Contradiction:
Improvenormal operation of resonant circuitVSAvoidvolume of magnetic device
Core Design Contradiction:
ReliabilityVSVolume of stationary object

Solution Approach 1:

The patent combines transformer, resonant inductor, and mutual inductor into a single integrated magnetic device with a unified magnetic core structure. The magnetic core includes first and second magnetic sections with coils wound thereon, where leakage inductance between windings provides resonant inductance, eliminating the need for separate discrete magnetic components and reducing overall device volume.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The magnetic device performs multiple functions simultaneously: the primary and secondary coils provide transformer function, the leakage inductance between coils provides resonant inductance, and the magnetic coupling between different coil sections provides mutual inductance. This multi-functional integration allows a single device to replace what would traditionally require three separate components.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If three separate devices (transformer, resonant inductor, mutual inductor) are used to ensure complete functionality, then all circuit requirements are met, but the device complexity increases

Engineering Contradiction:
Improvefunctional completeness of resonant circuitVSAvoidnumber of magnetic components
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent merges three separate magnetic devices into one integrated structure. The magnetic core contains multiple magnetic sections with different coil windings that simultaneously provide transformer action, resonant inductance through leakage flux, and mutual inductance through magnetic coupling, thereby reducing component count while maintaining functional completeness.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The single magnetic device is designed to be universal, performing transformer function through primary and secondary coils, resonant function through controlled leakage inductance, and mutual inductance function through coupled magnetic sections. This multi-functionality eliminates the need for multiple specialized components.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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

Reduces the overall volume of the magnetic device while maintaining functionality by integrating resonant inductors, transformers, and mutual inductors, enhancing reliability and efficiency.

Implementation Method 1

A first part of the primary coil is wound around the second magnetic section and a second part of primary coil is wound around the third magnetic section. The secondary coil is wound around the second magnetic section.

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 2

a fourth magnetic section magnetically connected with a first end of the first magnetic section, a first end of the second magnetic section and a first end of the third magnetic section, respectively; a fifth magnetic section magnetically connected with a second end of the first magnetic section, a second end of the second magnetic section and a second end of the third magnetic section, respectively

Methodology Applied
Scientific EffectMagnetic coupling: Magnetic Field

Data Source

PatentUS20250349457A1Magnetic Device
Publication Date: 2025.11.13 ANKER INNOVATIONS TECH CO LTD
  • US20250349457A1 patent drawing
  • US20250349457A1 patent drawing

AI summary

Various features herein describe a magnetic device and a method associated with a magnetic device. The magnetic device comprises: a first magnetic section; a second magnetic section; a third magnetic section; a fourth magnetic section magnetically connected with a first end of the first magnetic section, a first end of the second magnetic section and a first end of the third magnetic section, respectively; a fifth magnetic section magnetically connected with a second end of the first magnetic section, a second end of the second magnetic section and a second end of the third magnetic section, respectively. The magnetic device further comprises a primary coil, a secondary coil, and a mutual inductance coil.