The electrification of the mobility sector enables a significant reduction of greenhouse gases to counter global warming. An important component of an electric vehicle’s drive train is the electric traction motor. The most commonly used motor type, the permanent magnet synchronous machine (PMSM), contains critical rare earth magnet materials. The disassembly of the motor enables the recovery of these materials for reuse or recycling to save cost for new materials and enables a circular economy. Due to the relatively new trend towards electric mobility, the current number of end-of-life motors is rather small so the disassembly must be flexible to disassemble magnets from different manufacturers. Within this paper a flexible magnet disassembly cell is designed, implemented and tested. The flexibility of the cell addresses the magnet and lamination stack geometry as well as the magnet fixation type. The robustness of the disassembly process is achieved by a camera system and a force displacement monitoring. The test of the disassembly cell shows, magnets from different motors can be successfully disassembled.

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Flexible and Robust Magnet Disassembly Cell for Electric Traction Motors

  • Markus Heim,
  • Nicolaus Klein,
  • Fabian Lalla,
  • Florian Koessler,
  • Jürgen Fleischer

摘要

The electrification of the mobility sector enables a significant reduction of greenhouse gases to counter global warming. An important component of an electric vehicle’s drive train is the electric traction motor. The most commonly used motor type, the permanent magnet synchronous machine (PMSM), contains critical rare earth magnet materials. The disassembly of the motor enables the recovery of these materials for reuse or recycling to save cost for new materials and enables a circular economy. Due to the relatively new trend towards electric mobility, the current number of end-of-life motors is rather small so the disassembly must be flexible to disassemble magnets from different manufacturers. Within this paper a flexible magnet disassembly cell is designed, implemented and tested. The flexibility of the cell addresses the magnet and lamination stack geometry as well as the magnet fixation type. The robustness of the disassembly process is achieved by a camera system and a force displacement monitoring. The test of the disassembly cell shows, magnets from different motors can be successfully disassembled.