voda schreef op 19 augustus 2021 15:27:
ExOne, Maxxwell develop 3D-printed EV motor
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North Huntingdon, Pennsylvania-based ExOne Company is partnering with Tennessee’s Maxxwell Motors to 3D-print the wound copper portion of its axial flux electric motors for the EV and industrial markets, Kallanish reports.
Maxxwell holds nine patents related to electric motors and offers a 10-kilowatt air-cooled motor generator and a 150-kW liquid-cooled motor.
“Optimised copper windings and rotors in electric motors are among the factors enabling the automotive industry’s transition to hybrid and pure electric power vehicles. However, current methods of manufacturing the windings are costly, inefficient, and limit designs in a way that also limits their performance,” the companies say in a statement.
The new process will use a binder jet 3D printing process to create a “monolithic” piece, rather than the pattern-wound and tooled assembly that currently dominates the market.
“When we 3D print it, a lot of the challenges just go away, and we can actually improve the performance of the motor itself,” says Maxxwell ceo Michael Paritee, formerly of General Motors. “At Maxxwell, we’re taking the most sustainable, and additive manufacturing, point of view as possible to truly improve efficiency, reduce waste and optimize performance.”
Dan Hilliard USA