High-energy converter structure with three-dimensional multi-layer coil system and multipolar magnetic field coupling
A three-dimensional multi-layer coil system with multipolar magnetic coupling and resonant circuitry enhances power density and efficiency in flat induction generators, facilitating effective charging of wearable devices from human motion.
Patent Information
- Authority / Receiving Office
- DE · DE
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2026-02-01
- Publication Date
- 2026-04-02
AI Technical Summary
Conventional flat induction generators exhibit insufficient power density and output voltages at low mechanical excitation frequencies typical for human movement, making them inefficient for charging modern batteries.
A three-dimensional multi-layer coil system with a multipolar magnetic field coupling, combined with resonant circuitry and efficient converter electronics, to enhance power density and minimize conversion losses.
The system significantly increases power density and efficiency, enabling effective charging of electronic devices worn on the body from human biomechanics.
Abstract
Description
1. Technical field:
[0001] The invention relates to the internal electrical architecture of a highly efficient, flat energy converter for converting kinetic relative motion into electrical energy. The invention is particularly applicable to the self-sufficient power supply of electronic devices worn close to the body. 2. State of the art:
[0002] Conventional flat induction generators use simple coil-magnet arrangements. However, at the low frequencies typical for human movement (approximately 0.5 Hz to 5 Hz), these exhibit insufficient power density and output voltages to efficiently charge modern batteries. 3. Technical task:
[0003] The invention is based on the objective of drastically increasing the electrical output per unit area and minimizing conversion losses at low mechanical excitation frequencies. 4. Disclosure of the invention (solution):
[0004] The task is solved through a synergistic architecture based on three technical pillars: Vertical stacking: The coil element is designed as a multi-layer structure. Up to twelve insulated copper conductor layers are vertically stacked on a flexible substrate (preferably polyimide). Each layer has a specific meander geometry. By connecting the layers in series or parallel, the induced voltage or current is multiplied while maintaining the same surface area.
[0005] Multipolarity: The magnetic excitation unit is designed as a multipole matrix. It consists of a sequence of permanent magnets with alternating pole orientation (north-south). The spatial sequence of the poles is precisely matched to the winding spacing of the meander coils, which maximizes the number of flux reversals per millimeter traveled.
[0006] Resonance coupling: To optimize energy extraction, the system is designed as an electrical resonant circuit. The inherent inductance of the multi-layer coil is supplemented by a capacitive component in the downstream electronics. This enables a resonant voltage amplification that provides a usable charging voltage (e.g., 3.3V or 5V) even at low movement speeds.
[0007] Efficient converter electronics: To process the low induced voltages with minimal loss, the electronic unit preferably includes active rectification (e.g., using a MOSFET bridge rectifier). This minimizes the voltage drop compared to conventional diode rectifiers, thus increasing the overall system efficiency with minimal power consumption. The device can be implemented as a permanently integrated component or in a modular housing. 3. Summary
[0008] The invention describes a highly efficient architecture for kinetic energy converters. By combining multi-layer conductive traces on flexible substrates, an alternating-polarity magnetic matrix, and resonant interconnection, the power density of flat induction systems is significantly increased. The system enables the autonomous power supply of wearables and medical sensors directly from human biomechanics while maintaining a minimal design height.
Claims
[1] Electrical converter architecture for induction generation, characterized by , that the coil element is designed as a vertical package of at least two and up to twelve insulated copper conductor planes on a flexible support material, each plane having a meander geometry. [2] Device according to claim 1, characterized by , that a corresponding magnetic element is designed as a multipolar matrix, consisting of a sequence of magnets with alternating pole orientation in the direction of movement. [3] Device according to claims 1 and 2, characterized by , that the inductance of the conductor planes is supplemented by a capacitive component to form a resonant circuit in order to optimize the energy yield at mechanical excitation frequencies between 0.5 Hz and 10 Hz. [4] Device according to any one of the preceding claims, characterized by, that the sequence frequency of the magnetic poles of the multipolar matrix is matched to the geometry of the winding spacings of the conductor tracks within the conductor planes according to claim 1. [5] Device according to any one of the preceding claims, characterized by , that a thermally conductive polyimide substrate is used as the support material for the conductor layers.