Segmented PCB Stator Architecture for Compact Axial Field Rotaries

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Solution Overview

Problem

Conventional axial field rotary energy devices with layered disk stators are large, complex, and expensive, and existing designs using printed circuit board (PCB) stators are not modular, making them costly and difficult to manufacture effectively.

Innovation Solution

The development of an axial field rotary energy device featuring a rotor with a magnet and a coaxial stator composed of modular PCB segments, where each stator segment includes a PCB layer with a coil, allowing for efficient coupling of electrical phases and improved manufacturing simplicity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If conventional layered disk stators with wires are used, then the device can be manufactured, but the device becomes large and difficult to manufacture

Engineering Contradiction:
Improvemanufacturing easeVSAvoiddevice size
Core Design Contradiction:
Ease of manufactureVSVolume of moving object

Solution Approach 1:

The patent replaces traditional mechanical wire winding and interconnection systems with a printed circuit board (PCB) based system. The PCB stator uses standardized PCB manufacturing processes to create coil windings and electrical interconnections, eliminating the need for manual wire winding, insulation wrapping, and mechanical fastening operations. This substitution dramatically simplifies manufacturing while reducing device volume through more efficient space utilization of the PCB structure.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Ease of manufacture

If PCB stators are used, then manufacturing is simplified, but the device becomes complicated and expensive

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoiddesign complexity
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

The patent divides the PCB stator into multiple modular segments, each containing a specific number of coils and electrical phases. These segments can be independently manufactured, tested, and assembled, reducing the overall complexity of any single PCB unit. The segmentation allows for standardized production of identical modules that can be replicated and combined to create different device configurations, thereby simplifying the manufacturing process while managing design complexity through modularity.

Inventive Principle:
Principle #1Segmentation

3Volume of moving object

If PCB stators with multiple phases are integrated into single segments, then the device is more compact, but manufacturing becomes more expensive and complex

Engineering Contradiction:
Improvedevice compactnessVSAvoidmanufacturing cost
Core Design Contradiction:
Volume of moving objectVSEase of manufacture

Solution Approach 1:

The patent separates the stator into multiple segments, each handling a specific electrical phase or coil set. This segmentation allows each segment to be manufactured as a simpler, more cost-effective PCB unit using standardized manufacturing processes. The segments are then assembled together to form the complete multi-phase stator, achieving the desired compactness while avoiding the exponential cost and complexity increases that would result from integrating all phases into a single complex PCB.

Inventive Principle:
Principle #1Segmentation

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

This solution results in a cost-effective, modular, and efficient axial field rotary energy device with improved manufacturing ease and reduced complexity, enhancing the overall performance and efficiency of the system.

Implementation Method 1

a rotor comprising an axis of rotation and a magnet; and a stator coaxial with the rotor, the stator comprises a printed circuit board (PCB) having a PCB layer comprising a coil

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Data Source

PatentUS11881751B2System and apparatus for segmented axial field rotary energy device
Publication Date: 2024.01.23 INFINITUM ELECTRIC INC
  • US11881751B2 patent drawing
  • US11881751B2 patent drawing
  • US11881751B2 patent drawing

AI summary

An axial field rotary energy device can include a rotor comprising an axis of rotation and a magnet. In addition, a stator can be coaxial with the rotor. The stator can include a plurality of stator segments that are coupled together about the axis. Each stator segment can include a printed circuit board (PCB) having a PCB layer comprising a coil. Each stator segment also can include only one electrical phase. The stator itself can include one or more electrical phases.