Vent housing for advanced batteries
A system includes a vent housing configured to be installed on a lower housing of a battery module at a first side of the vent housing. The vent housing has a main body having an opening on a second side of the vent housing and an internal chamber coupled to the opening. The internal chamber includes a first wall having an internal burst vent configured to open at a first pressure threshold and a second wall having a ventilation vent comprising a gas-selective permeability layer.
1. A system, comprising:
a lower housing sized to hold a plurality of lithium-ion electrochemical cells and having a first connection surface; and
a vent housing configured to couple with the lower housing, comprising:
a main body having a second connection surface that abuts with the first connection surface;
an opening in a face of the main body, the face being oriented generally crosswise relative to the second connection surface; and
an internal chamber coupled to the opening and comprising an internal burst vent and a ventilation vent, wherein the ventilation vent comprises a gas-selective permeability layer, wherein the internal burst vent is disposed on a first wall of the internal chamber, and the ventilation vent is disposed on a second wall of the internal chamber, the first and second wall being coupled to one another and being oriented crosswise to one another.
2. The system of claim 1 , wherein the first wall of the internal chamber is generally parallel with the opening, and the internal burst vent comprises a valve disposed in a seating, the valve being configured to displace from the seating in a direction from the first wall toward the opening at a pressure threshold.
3. The system of claim 2 , wherein the internal chamber is sized to accommodate the valve displaced from the seating.
4. The system of claim 2 , wherein the valve comprises a first portion and a second portion disposed within a first seating portion and a second seating portion, respectively, and wherein the first portion is configured to displace from a seating portion, and the second portion is configured to retain the first portion within the internal chamber after the first portion is displaced from the seating portion.
5. A system, comprising:
a lower housing sized to hold a plurality of lithium-ion electrochemical cells and having a first connection surface; and
a vent housing configured to couple with the lower housing, comprising:
a main body having a second connection surface that abuts with the first connection surface;
an opening in a face of the main body, the face being oriented generally crosswise relative to the second connection surface; and
an internal chamber coupled to the opening and comprising an internal burst vent and a ventilation vent, wherein the ventilation vent comprises a gas-selective permeability layer; and
comprising a face plate secured to the face of the vent housing and over the opening.
6. The system of claim 5 , comprising a hose connection assembly disposed in the face plate, the hose connection assembly comprising a hose connector secured to the face plate, wherein the hose connector is configured to connect to a vent hose of a vehicle.
7. A system, comprising:
a lower housing sized to hold a plurality of lithium-ion electrochemical cells and having a first connection surface; and
a vent housing configured to couple with the lower housing, comprising:
a main body having a second connection surface that abuts with the first connection surface;
an opening in a face of the main body, the face being oriented generally crosswise relative to the second connection surface; and
an internal chamber coupled to the opening and comprising an internal burst vent and a ventilation vent, wherein the ventilation vent comprises a gas-selective permeability layer;
wherein the lower housing, the vent housing, or a combination thereof, is made of sheet metal; and
comprising a gasket positioned on the first connection surface, the second connection surface, or a combination thereof.
8. A system, comprising:
a lower housing sized to hold a plurality of lithium-ion electrochemical cells and having a first connection surface; and
a vent housing configured to couple with the lower housing, comprising:
a main body having a second connection surface that abuts with the first connection surface;
an opening in a face of the main body, the face being oriented generally crosswise relative to the second connection surface; and
an internal chamber coupled to the opening and comprising an internal burst vent and a ventilation vent, wherein the ventilation vent comprises a gas-selective permeability layer;
wherein the lower housing, the vent housing, or a combination thereof, is made of sheet metal; and
wherein the first and second connection surfaces comprise corresponding threaded openings to enable them to be fastened to one another.
9. A system, comprising:
a lower housing sized to hold a plurality of lithium-ion electrochemical cells and having a first connection surface; and
a vent housing configured to couple with the lower housing, comprising:
a main body having a second connection surface that abuts with the first connection surface;
an opening in a face of the main body, the face being oriented generally crosswise relative to the second connection surface; and
an internal chamber coupled to the opening and comprising an internal burst vent and a ventilation vent, wherein the ventilation vent comprises a gas-selective permeability layer; and
wherein the first connection surface of the lower housing and the second connection surface of the main body are coupled to one another with at least a weld.
10. The system of claim 9 , wherein the first connection surface of the lower housing and the second connection surface of the main body are coupled to one another with fasteners in addition to the weld.