Flame quenching chamber for stationary battery

Patent metadata

Field	Value
Publication number	US-2023291069-A1
Application number	US-202217690372-A
Country	US
Kind code	A1
Filing date	Mar 9, 2022
Priority date	Mar 9, 2022
Publication date	Sep 14, 2023
Grant date	—

Abstract

Illustrative examples of an apparatus may include a quenching chamber configured to direct a heat flow from a battery cell compartment to a vent. The quenching chamber may be configured to extinguish a flame present in the heat flow before the heat flow reaches the vent. In other examples, a method includes receiving a heat flow from a battery cell compartment comprising a plurality of battery cells at a quenching chamber. The method further comprises directing the thermal runaway heat flow through the quenching chamber to a vent.

First claim

What is claimed is:

1 . An apparatus, comprising:
a quenching chamber configured to direct a heat flow from a battery cell compartment to a vent, the quenching chamber configured to extinguish a flame present in the heat flow before the heat flow reaches the vent.

2 . The apparatus of claim 1 , further comprising one or more baffles positioned within the quenching chamber.

3 . The apparatus of claim 1 , wherein the one or more baffles define an undulating flow path through the quenching chamber.

4 . The apparatus of claim 3 , wherein the undulating flow path defines a path length exceeding a distance from the battery cell compartment to the vent, the path length being at least twice as great as the distance.

5 . The apparatus of claim 1 , wherein the one or more baffles include a plurality of obstructions to the thermal runaway heat flow.

6 . The apparatus of claim 5 , wherein the quenching chamber is defined by a plurality of wall members, and the plurality of obstructions are supported by one of the wall members, each of the obstructions defining an oblique angle with the wall member of the obstruction.

7 . The apparatus of claim 1 , wherein the vent is a pressure relief valve comprising a movable valve member configured to move in response to an internal pressure of the quenching chamber exceeding a threshold pressure.

8 . The apparatus of claim 1 , wherein the quenching chamber is configured to dissipate one of a temperature and a pressure of the thermal runaway heat flow as the thermal runaway heat flow travels to the vent.

9 . The apparatus of claim 1 , wherein the quenching chamber defines an enclosed volume configured to allow expansion of the thermal runaway heat flow.

10 . The apparatus of claim 1 , wherein the quenching chamber comprises a plurality of flow paths from a corresponding plurality of battery cell compartment entry locations to the vent.

11 . The apparatus of claim 1 , wherein the vent is configured to direct the thermal runaway heat flow to an external chamber of the apparatus, the external chamber of the apparatus configured to direct the thermal runaway heat flow out of the apparatus through an outlet.

12 . The apparatus of claim 1 , wherein the apparatus is a residential battery module comprising the battery cell compartment.

13 . The apparatus of claim 12 , further comprising a battery chamber wall separating the battery cell compartment from an external chamber positioned above the battery cell compartment and the quenching chamber.

14 . The apparatus of claim 13 , wherein:
the vent is positioned in the battery chamber wall; and
the external chamber comprises an outlet positioned in a side wall of the external chamber.

15 . A residential battery module, comprising:
a battery module enclosed within a battery cell compartment, the battery module comprising one or more battery cells configured to store electrical energy; a quenching chamber configured to direct a heat flow from the battery cell compartment to a vent, the quenching chamber configured to extinguish a flame present in the heat flow before the heat flow reaches the vent; and a battery chamber wall separating the battery cell compartment from an external chamber positioned above the battery cell compartment and the quenching chamber, the vent positioned in the battery chamber wall, and the external chamber defining an outlet for the thermal runaway heat flow.

16 . The residential battery module of claim 15 , further comprising one or more baffles positioned within the quenching chamber, the one or more baffles including a plurality of obstructions to the thermal runaway heat flow.

17 . A method, comprising:
receiving a heat flow from a battery cell compartment comprising a plurality of battery cells at a quenching chamber; and directing the heat flow through the quenching chamber to a vent, the quenching chamber extinguishing a flame present in the heat flow before the heat flow reaches the vent.

18 . The method of claim 17 , wherein directing the thermal runaway heat flow through the quenching chamber includes passing the thermal runaway heat flow through one or more baffles within the quenching chamber, the one or more baffles comprising a plurality of obstructions.

19 . The method of claim 17 , wherein directing the thermal runaway heat flow through the quenching chamber includes passing the thermal runaway heat flow through an undulating flow path.

20 . The method of claim 17 , wherein the vent is a pressure relief valve comprising a movable valve member, the method further comprising venting the heat flow from the quenching chamber via the movable valve member in response to an internal pressure of the quenching chamber exceeding a threshold pressure.

Assignees

• Rivian Ip Holdings Llc

Inventors

• Murkute Akshay
• Bahei-Eldin Khaled
• Ma Ming

Classifications

• H01M50/367 Primary

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

• H01M2200/20

  Pressure-sensitive devices · CPC title

• H01M50/383 Primary

  Flame arresting or ignition-preventing means · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M50/204

  Racks, modules or packs for multiple batteries or multiple cells · CPC title