Multipolar magnetising fixture for high coercivity materials
The magnetizing fixture with a meandering current path and enhanced thermal management effectively addresses the challenges of high-current magnetization, enabling efficient Halbach array-like patterns and strong magnetic forces, suitable for various applications including ski skins and electric motors.
Patent Information
- Application Number
- EP2019722584
- Authority / Receiving Office
- EP · EP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2019-05-03
- Publication Date
- 2025-03-19
- Estimated Expiration
- 2039-05-03
AI Technical Summary
Existing magnetizing fixtures face challenges in creating high-current multipolar stripe patterns for thin sheets or laminated layers with high-energy permanent magnets like Nd-Fe-B, due to mechanical and thermal stresses, requiring precise machining and insulation to manage high currents and heat dissipation effectively.
A magnetizing fixture with a meandering current path created by connecting conducting portions in a U-shaped pattern, using conducting bridges for electrical connection, and incorporating open slots to prevent eddy currents and enhance heat dissipation, allowing for scalable and modular design with improved mechanical strength and thermal management.
The solution enables efficient magnetization of thin sheets or laminated layers into a Halbach array-like pattern with strong magnetic holding forces, effectively managing thermal and mechanical stresses while allowing for flexible design and scalability, and can be used for applications like ski skins and electric motor stators.