Vent housing for advanced batteries

Patent metadata

Field	Value
Publication number	US-10714720-B2
Application number	US-201815915056-A
Country	US
Kind code	B2
Filing date	Mar 7, 2018
Priority date	Jul 25, 2013
Publication date	Jul 14, 2020
Grant date	Jul 14, 2020

Abstract

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.

First claim

The invention claimed is:

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.

Assignees

• Cps Tech Holdings Llc

Inventors

• Mack Robert J
• Cavanaugh William M

Classifications

• H01M50/367

  Internal gas exhaust passages forming part of the battery cover or case; Double cover vent systems · CPC title

• H01M50/342

  Non-re-sealable arrangements · CPC title

• H01M50/394

  Gas-pervious parts or elements · CPC title

• H01M50/308 Primary

  Detachable arrangements, e.g. detachable vent plugs or plug systems · CPC title

• H01M50/317

  Re-sealable arrangements · CPC title