Rechargeable energy storage system high flow thermal vent management system
A rechargeable energy storage system, includes a housing. A plurality of battery cells are disposed in the housing. A discharge vent passage is in communication with the housing, the discharge vent passage including a one-way valve and a nozzle. A chamber is in communication with the nozzle and including an air inlet passage with a one-way valve. An outlet pipe is connected to the chamber. According to an aspect, the air inlet passage of the thermal vent management system is arranged as a Venturi opening adjacent to the nozzle.
1. A rechargeable energy storage system, comprising:
a housing;
a plurality of battery cells disposed in the housing;
a discharge vent passage in communication with the housing, the discharge vent passage including a first one-way valve and a nozzle downstream from the first one-way valve and the nozzle including a wall surface that tapers inwardly to get narrower in a downstream direction;
a chamber in downstream communication with the nozzle and including at least one air inlet passage with a second one-way valve, the at least one air inlet passage being arranged as a Venturi opening adjacent to and parallel with the nozzle for drawing ambient air through the second one-way valve and into the chamber when gasses are discharged through the nozzle from the housing; and
an outlet pipe connected downstream to the chamber.
2. The rechargeable energy storage system according to claim 1 , wherein the chamber includes a drain hole.
3. The rechargeable energy storage system according to claim 1 , wherein the chamber has a larger cross section in a direction perpendicular to a flow direction than a cross section of the discharge vent passage in the direction perpendicular to the flow direction.
4. The rechargeable energy storage system according to claim 3 , wherein the cross section of the chamber in the direction perpendicular to the flow direction is larger than a cross section of the outlet pipe in the direction perpendicular to the flow direction.
5. The rechargeable energy storage system according to claim 1 , further comprising one of a gas or temperature sensor in the discharge vent passage.
6. The rechargeable energy storage system according to claim 5 , wherein the one of a gas or temperature sensor provides signals to a controller and wherein the controller provides signals for activating an ignitor in the chamber.
7. A vehicle, comprising:
a vehicle body including a vehicle floor and a rear bumper;
a rechargeable energy storage system including:
a housing;
a plurality of battery cells disposed in the housing;
a discharge vent passage in communication with the housing, the discharge vent passage including a first one-way valve and a nozzle downstream from the first one-way valve and the nozzle including a wall surface that tapers inwardly to get narrower in a downstream direction;
a chamber disposed below the vehicle floor and in downstream communication with the nozzle and including an air inlet passage with a second one-way valve the at least one air inlet passage being arranged as a Venturi opening adjacent to and parallel with the nozzle for drawing ambient air through the second one-way valve and into the chamber when gasses are discharged through the nozzle from the housing; and
an outlet pipe connected downstream to the chamber and opening at a location below the rear bumper.
8. The vehicle according to claim 7 , wherein the chamber includes a drain hole.
9. The vehicle according to claim 7 , wherein the chamber has a larger cross section in a direction perpendicular to a flow direction than a cross section of the discharge vent passage in the direction perpendicular to the flow direction.
10. The vehicle according to claim 9 , wherein the cross section of the chamber in a direction perpendicular to the flow direction is larger than a cross section of the outlet pipe in the direction perpendicular to the flow direction.