System for electric aircraft battery venting using a vent conduit

Abstract

A battery venting system having a battery module containing a plurality of pouch cells. The battery module also includes a vent port. The battery venting system also including a vent outlet disposed on the surface of an aircraft fuselage. The battery venting system further including a vent conduit fluidly connecting the vent port of the battery module to the vent outlet. The vent conduit is configured to carry battery ejecta from the battery module, from the vent port to the vent outlet. The vent conduit includes at least a cooling fin disposed on an interior wall of the vent conduit and extending into the vent conduit, the at least a cooling fin configured to dissipate heat from the battery ejecta, when the battery ejecta is in the vent conduit.

What is claimed is: 
     
         1 . A battery venting system, comprising:
 at least a battery, the at least a battery containing a plurality of battery cells, the at least a battery comprising a vent port;   at least a vent outlet, the at least a vent outlet disposed on the surface of an aircraft fuselage;   at least a vent conduit, the at least a vent conduit connecting the vent port of the battery to the at least a vent outlet, wherein:
 the at least a vent conduit configured to carry material, from the battery to the at least a vent outlet; and 
   the at least a vent conduit includes at least a feature directing material along a flow path.   
     
     
         2 . The battery venting system of  claim 1 , wherein the at least a feature further comprises at least a fin. 
     
     
         3 . The battery venting system of  claim 1 , wherein the at least a fin further comprises a plurality of fins 
     
     
         4 . The battery venting system of  claim 1 , wherein vent conduit includes a check valve. 
     
     
         5 . The battery venting system of  claim 4 , wherein the plurality of fins are comprised of carbon fiber. 
     
     
         6 . The battery venting system of  claim 2 , wherein the at least a fin is shaped to direct battery ejecta to the vent outlet. 
     
     
         7 . The battery venting system of  claim 1 , wherein the at least a vent outlet is comprised of carbon fiber. 
     
     
         8 . The battery venting system of  claim 1 , wherein the at least a vent conduit further comprises a pressure valve. 
     
     
         9 . The battery venting system of  claim 8 , wherein the pressure valve is a pressure disk, the pressure disk having an intact state and a ruptured state, wherein:
 when the pressure disk is in its intact state, the pressure disk stops battery ejecta from venting; and   when the pressure disk is in its ruptured state, the pressure disk allows battery ejecta to vent.   
     
     
         10 . The battery venting system of  claim 1 , wherein the at least a vent conduit comprises an ablative layer, the ablative layer disposed on at least a portion of the interior wall of the at least a vent conduit, the ablative layer having a spent state wherein it is no longer disposed on the interior wall of the at least a vent conduit and may be carried by the at least a vent conduit to the at least a vent outlet. 
     
     
         11 . The battery venting system of  claim 10 , wherein the ablative layer is disposed on the entirety of the interior wall of the at least a vent conduit. 
     
     
         12 . The battery venting system of  claim 10 , wherein the interior wall of the at least a vent conduit is contoured to channel the battery ejecta onto at least a portion of the interior wall of the at least a vent conduit on which the ablative layer is disposed. 
     
     
         13 . The battery venting system of  claim 1 , wherein the at least a vent conduit is comprised of carbon fiber. 
     
     
         14 . The battery venting system of  claim 1 , wherein the at least a vent outlet is configured to direct battery ejecta away from the exterior of the aircraft fuselage. 
     
     
         15 . The battery venting system of  claim 1 , further comprising a turbulator. 
     
     
         16 . The battery venting system of  claim 15 , wherein the turbulator is a matrix turbulator. 
     
     
         17 . The battery venting system of  claim 1 , wherein:
 the at least a battery comprises a plurality of batteries;   the at least a vent conduit comprises a plurality of vent conduits; and   each of the plurality of vent conduits connects the vent port on a battery of the plurality of batteries to the vent outlet.   
     
     
         18 . The battery venting system of  claim 1 , wherein:
 the at least a battery comprises a plurality of batteries;   the at least a vent conduit comprises a plurality of vent conduits;   the at least a vent outlet comprises a plurality of vent outlets; and   each of the plurality of vent conduits connecting the vent port on a battery of the plurality of batteries to a vent outlet of the plurality of vent outlets.   
     
     
         19 . The battery venting system of  claim 1 , wherein the at least a vent outlet is disposed on the bottom surface of the aircraft fuselage. 
     
     
         20 . The battery venting system of  claim 1 , wherein the at least a vent outlet comprises an outlet filter.