US 11,962,032 B2
Anti-propagation exhaust device for aircraft lithium-ion batteries
Julien Bergery, Toulouse (FR); and Dimitry Loubere, Toulouse (FR)
Assigned to AIRBUS DEFENCE AND SPACE SAS, Toulouse (FR)
Appl. No. 17/783,526
Filed by AIRBUS DEFENCE AND SPACE SAS, Toulouse (FR)
PCT Filed Jul. 27, 2021, PCT No. PCT/FR2021/051398
§ 371(c)(1), (2) Date Jun. 8, 2022,
PCT Pub. No. WO2022/029380, PCT Pub. Date Feb. 10, 2022.
Claims priority of application No. 20 08293 (FR), filed on Aug. 5, 2020.
Prior Publication US 2023/0011662 A1, Jan. 12, 2023
Int. Cl. H01M 50/342 (2021.01); H01M 10/0525 (2010.01)
CPC H01M 50/3425 (2021.01) [H01M 10/0525 (2013.01); H01M 2200/20 (2013.01); H01M 2220/20 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An assembly for supplying power to an aircraft, comprising: a plurality of housings, each housing a respective battery, each housing being suitable for being carried on board an aircraft and comprising a wall in which a through-opening is arranged, and
an exhaust device, comprising:
a discharge duct suitable for connecting the opening of each housing to a discharge port common to all housings, the common discharge port leading to outside the aircraft,
a plurality of first valves, each mounted on the opening of a respective housing,
a pressure relief valve suitable for mounting on the common discharge port,
wherein each first valve comprises a membrane mounted on the wall of each housing in which the through-opening is arranged, so as to seal closed said opening, and is configured to burst when a pressure exerted on the membrane inside the housing exceeds an internal bursting pressure valve, or when the pressure exerted on the membrane outside the housing exceeds an external bursting pressure value,
wherein the internal bursting pressure value is lower than the external bursting pressure, and
wherein the pressure relief valve is configured to close off the common discharge port as long as the pressure in the discharge duct is lower than a threshold pressure value that is less than the external bursting pressure of the first membranes, and to allow fluid communication to the outside of the aircraft when the pressure in the discharge duct reaches said threshold pressure.