Abstract: An example system includes a vehicle having a prime mover motively coupled to a drive line; a motor/generator selectively coupled to the drive line, and configured to selectively modulate power transfer between an electrical load and the drive line; a battery pack; a DC/DC converter electrically interposed between the motor/generator and the electrical load, and between the battery pack and the electrical load, the DC/DC converter comprising a DC/DC converter housing; and a covering tray positioned over a plurality of batteries of the battery pack, the covering tray comprising a connectivity layer configured to provide electrical connectivity to terminals of the plurality of batteries.

Abstract: A thermal management system includes a refrigeration circuit that cools at least a first coolant that circulates around a battery cooling loop. Refrigerant of the refrigeration circuit is cooled at a liquid-cooled condenser and at an air-cooled condenser. In certain examples, the liquid-cooled condenser is cooled by coolant circulating along a propeller arrangement cooling loop. In certain examples, the coolant from the propeller arrangement cooling loop may be combined with coolant from the battery cooling loop.

Abstract: A thermal management system enables fluid coupling of the cooling circuits for the battery and the propeller arrangements. More than one propeller arrangement can be serviced by the same cooling circuit, but distribution of the coolant may be finessed. Optional pathways are provided to use heated coolant for heating (e.g., de-icing, cabin heating, etc.) before cooling the coolant. Fluid coupling of conduits between and/or within the cooling circuits provide redundancy to accommodate various faults and equipment malfunctions.

Abstract: A thermal management system proactively provides cooling to powered components and/or the battery of an aircraft based on expected temperature rises of the components. The thermal management system may monitor maneuver commands input by a pilot and/or may monitor a flight plan including maneuver commands and associated trigger events to determine when to take proactive steps. The thermal management system may adjust a coolant flow rate and/or may adjust a refrigerant flow rate to increase or decrease the level of cooling provided to various components.

Abstract: An example system includes a vehicle having a prime mover motively coupled to a drive line; a motor/generator selectively coupled to the drive line, and configured to selectively modulate power transfer between an electrical load and the drive line; a battery pack; a DC/DC converter electrically interposed between the motor/generator and the electrical load, and between the battery pack and the electrical load, the DC/DC converter comprising a DC/DC converter housing; and a covering tray positioned over a plurality of batteries of the battery pack, the covering tray comprising a connectivity layer configured to provide electrical connectivity to terminals of the plurality of batteries.