US 11,990,597 B2
Thermal regulation of batteries
Jonathan Rheaume, West Hartford, CT (US)
Assigned to Hamilton Sundstrand Corporation, Charlotte, NC (US)
Filed by Hamilton Sundstrand Corporation, Charlotte, NC (US)
Filed on Mar. 19, 2020, as Appl. No. 16/824,619.
Claims priority of provisional application 62/821,278, filed on Mar. 20, 2019.
Prior Publication US 2020/0350648 A1, Nov. 5, 2020
Int. Cl. H01M 10/6568 (2014.01); H01M 10/18 (2006.01); H01M 10/48 (2006.01); H01M 10/613 (2014.01); H01M 10/615 (2014.01); H01M 10/625 (2014.01); H01M 10/63 (2014.01); H01M 10/6561 (2014.01)
CPC H01M 10/6568 (2015.04) [H01M 10/486 (2013.01); H01M 10/615 (2015.04); H01M 10/63 (2015.04); H01M 10/613 (2015.04); H01M 10/625 (2015.04); H01M 10/6561 (2015.04)] 17 Claims
OG exemplary drawing
 
1. A battery thermal management system for an air vehicle comprising:
a liquid heat exchange circuit;
a ram air heat exchange circuit;
a liquid-air heat exchanger positioned on the liquid heat exchange circuit and the ram air heat exchange circuit to exchange heat therebetween;
a ram air door in the ram air heat exchange circuit;
at least two coolant pumps fluidically connected to the liquid heat exchange circuit, upstream from the battery heat exchanger and downstream from the liquid-air heat exchanger;
at least one flow restrictor positioned in the liquid heat exchange circuit;
a controller operatively coupled to the at least one flow restrictor;
at least one battery in thermal communication with the liquid heat exchange circuit; and
a temperature sensor operatively connected to the controller and to the at least one battery to sense a temperature of the at least one battery, wherein the at least one flow restrictor is configured and adapted to receive a command from the controller to vary a flow area of a flow path through the liquid heat exchange circuit by at least partially reducing the flow area through the flow path if the temperature of the at least one battery is below a pre-determined threshold, and wherein the ram air door is configured and adapted to receive a command from the controller to at least partially impede flow of ram air to the liquid-air heat exchanger during cold soak conditions.