# US 2021/0280929 A1 · Fire suppressant enclosures for battery cell systems > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0280929 A1 - Document ID: US20210280929A1 - Status: Published application - Kind: A1 - Application number: 17/255,454 - Filed: 2019-06-28 - Published: 2021-09-09 - Earliest claimed: 2018-06-28 - Inventors: Luis PEREZ - Web page: https://patentgrep.com/patent/US20210280929A1 ## CPC - H01M 10/48: Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte (constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569) - H01M 10/6568: characterised by flow circuits, e.g. loops, located externally to the cells or cell casings - A62C 3/08: in aircraft {(A62C3/0207 takes precedence)} - A62C 3/16: in electrical installations, e.g. cableways - H01M 10/425: {Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing (printed circuits H05K1/00)} - H01M 10/482: {for several batteries or cells simultaneously or sequentially} - H01M 10/486: {for measuring temperature} - H01M 10/625: Vehicles - H01M 10/6567: Liquids - H01M 50/152: for cells having curved cross-section, e.g. round or elliptic (H01M50/15, H01M50/153 take precedence) - H01M 50/162: Composite material consisting of a mixture of organic and inorganic materials - H01M 50/202: Casings or frames around the primary casing of a single cell or a single battery - H01M 50/213: adapted for cells having curved cross-section, e.g. round or elliptic (H01M50/209, H01M50/216 take precedence) - H01M 50/224: Metals - H01M 50/231: having a layered structure - H01M 50/233: characterised by physical properties of casings or racks, e.g. dimensions - H01M 50/249: specially adapted for aircraft or vehicles, e.g. cars or trains (constructional details of batteries specially adapted for electric vehicles B60L50/64) - H01M 50/271: Lids or covers for the racks or secondary casings - H01M 50/282: having a layered structure - H01M 50/569: Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals (battery terminal connectors with integrated measuring arrangements G01R31/364) - H01M 50/578: in response to pressure - H01M 50/581: in response to temperature - H01M 2200/00: Safety devices for primary or secondary batteries - H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - A62C: FIRE-FIGHTING (fire-extinguishing compositions, use of chemical substances in extinguishing fires A62D1/00; spraying, applying liquids or other fluent materials to surfaces in general B05; alarm arrangements G08B, e.g. fire alarms actuated by smoke or gases G08B17/10) ## Abstract Battery systems and associated methods are described herein. A representative battery system includes: a plurality of individual battery units that each include a battery cell enclosed in a housing with a sensor therein configured to sense a physical characteristic of the battery cell, such as output voltage, output current, battery temperature, etc.; and a controller configured to connect/disconnect each battery cell according to its physical status to/from a device/system monitoring the battery system, such as an overarching vehicle control system. ## Claims ### Claim at position 1 1-21. (canceled) ### Claim 22 A battery system comprising: an energy storage cell; a cell container surrounding the energy storage cell, the cell container comprising at least one power output terminal and a test port; an external housing defining an enclosure configured to encompass the cell container; a conduit attached to the test port of the cell container and accessible through the external housing; and a valve positioned within the conduit and controlling fluidic flow through the conduit. ### Claim 23 (depends on 22) A battery system according to claim 22, comprising at least a first sensor communication terminal accessible through the cell container. ### Claim 24 (depends on 23) A battery system according to claim 23, wherein said first sensor communication terminal is connected to a temperature sensor within the cell container. ### Claim 25 (depends on 23) A battery system according to claim 23, wherein said first sensor communication terminal is connected to a detection sensor tuned to determine a presence of a target analyte within the cell container. ### Claim 26 (depends on 22) A battery system according to claim 22, further comprising a cell end cap securing said cell container. ### Claim 27 (depends on 26) A battery system according to claim 26, wherein said cell endcap defines the test port connected to said conduit. ### Claim 28 (depends on 26) A battery system according to claim 26, wherein said cell endcap comprises a carbon fiber polymer. ### Claim 29 (depends on 22) A battery system according to claim 22, wherein said valve is configured for an opened position and a closed position respectively exposing and sealing said cell container relative to an outside environment. ### Claim 30 (depends on 29) A battery system according to claim 29, wherein said conduit is a cell conduit connected to said test port, and said valve is a cell valve positioned within said cell conduit and configured for an opened position to allow access into the cell container from said cell conduit. ### Claim 31 (depends on 30) A battery system according to claim 30, further comprising a test circuit connected to said cell conduit to gain access to an interior of said cell container. ### Claim 32 (depends on 30) A battery system according to claim 30, wherein the fluidic flow comprises gaseous flow and/or liquid flow. ### Claim 33 (depends on 32) A battery system according to claim 32, wherein the test circuit comprises a pressure test circuit that tracks a pressure reading for an interior of the cell container. ### Claim 34 (depends on 32) A battery system according to claim 32, wherein the test circuit comprises an air quality test circuit that tracks a presence of at least one analyte in the cell container. ### Claim 35 (depends on 22) A battery system according to claim 22, further comprising at least one inner bulkhead sealing the external housing and defining at least a second sensor communication terminal having access to an interior of the external housing. ### Claim 36 (depends on 35) A battery system according to claim 35, further comprising an interior port defined by said inner bulkhead of said external housing, said interior port configured to connect to said test port of said cell container. ### Claim 37 (depends on 36) A battery system according to claim 36, further comprising a housing end cap, wherein said test port of said cell container and said interior port of said inner bulkhead are configured to connect to an access port defined within the housing endcap. ### Claim 38 (depends on 36) A battery system according to claim 36, further comprising a cell container conduit connecting said access port within the housing endcap to said interior port of said inner bulkhead and said valve is positioned within said cell container conduit. ### Claim 39 (depends on 36) A battery system according to claim 36, wherein said conduit comprises a cell container conduit extending from said test port of said cell endcap to said interior port of said bulkhead and said cell container conduit extending from said bulkhead to said access port of said housing endcap. ### Claim 40 (depends on 22) A battery system according to claim 22, wherein said cell container is pressurized to sea level atmospheric pressure with a compressed gas surrounding said energy storage cell. ### Claim 41 (depends on 40) A battery system according to claim 40, wherein said compressed gas is an inert gas at about 14.75 PSIG. ### Claim 42 (depends on 22) A battery system according to claim 22, wherein said external housing is pressurized to sea level atmospheric pressure with a liquid additive positioned between said cell container and said external housing. ### Claim 43 (depends on 42) A battery system according to claim 42, wherein said liquid additive is a flame-retardant fluid. ### Claim 44 (depends on 43) A battery system according to claim 43, wherein said flame retardant fluid further serves as a heat sink for the battery units during an active operation of the battery units.