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Liquid-cooled Heavy-duty Coreless Motors
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Classification

• Brushless

• Axial field

• Disk-shaped

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Principle Structure
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Implemented 3-Module Structure
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• 3-Module Motor (25 kW peak x 3)

Pin-type connectors
R-side end rotor
interposed rotor
interposed rotor
stator module
L-side end rotor
stator module
stator module
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• 1-Module Motor - general view

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• 1-Module Motor - exploded view

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• 1-Module Motor - cut-away view

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• Cooling System
• Liquid Coolant DexCool ElectraCool
• Prediluted 50/50 Anti-Freeze/Coolant (ethylene
  glycol)
• Boiling protection 129C (265F)
• Freezing protection -37C (-34F)
• Volumetric flow rate 5 Gallon/min
• Inlet fluid temperature
• Maximum 80C (176F)
• Minimum -18C (0F) / -40C (-40F)
• Maximal pressure drop 1.0 lb/in²

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• 3-Module - Cooling System

Cooling liquid outlets
Cooling liquid inlet
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• 3-Module - Cooling System

First Stator
Last Stator
Outlet
Inlet
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Prototypes
Gear - box
Motor
1-Module Motor (25 kW, 10,500 rpm, OD260 mm)
1-Module Motor 75 kW gear-box on test bench