# US 2026/0094931 A1 · Energy storage system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2026/0094931 A1 - Document ID: US20260094931A1 - Status: Published application - Kind: A1 - Application number: 19/094,537 - Filed: 2025-03-28 - Published: 2026-04-02 - Earliest claimed: 2024-09-30 - Assignees: Samsung SDI Co., Ltd. - Applicants: Samsung SDI Co., Ltd. - Inventors: SOOTAEK KIM; Jongwoon Yang - Web page: https://patentgrep.com/patent/US20260094931A1 ## CPC - H01M 50/204: Racks, modules or packs for multiple batteries or multiple cells - H01M 50/383: Flame arresting or ignition-preventing means - A62C 3/16: in electrical installations, e.g. cableways - A62C 35/68: Details, e.g. of pipes or valve systems (valves in general F16K) - H01M 50/209: adapted for prismatic or rectangular cells (H01M50/216 takes precedence) - H01M 50/291: characterised by their shape - H01M 50/293: characterised by the material - H01M 2200/00: Safety devices for primary or secondary batteries - Y02E 60/10: Energy storage using batteries - 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) - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract An energy storage system includes a plurality of battery modules, a fire-extinguishing tank accommodating a fire-extinguishing agent, and a pipe part connecting the plurality of battery modules to the fire-extinguishing tank, wherein each of the plurality of battery modules includes a plurality of battery cells and a fire-extinguishing tube which extends into the interior of each of the plurality of battery modules along an arrangement of the plurality of battery cells, wherein the pipe part includes: a distribution pipe connected to the fire-extinguishing tube in the battery modules; and an extension pipe including connecting portions connected to the distribution pipe, and a curved portion disposed between the connecting portions. ## Claims ### Claim 1 An energy storage system comprising: a plurality of battery modules; a fire-extinguishing tank accommodating a fire-extinguishing agent; and a pipe part connecting the plurality of battery modules to the fire-extinguishing tank, wherein the plurality of battery modules comprise a plurality of battery cells and a fire-extinguishing tube which extends into the interior of each of the plurality of battery modules along an arrangement of the plurality of battery cells, and the pipe part comprises: a distribution pipe connected to the fire-extinguishing tube in the battery modules; and an extension pipe including connecting portions connected to the distribution pipe, and a curved portion disposed between the connecting portions. ### Claim 2 (depends on 1) The energy storage system of claim 1, wherein the curved portion protrudes in a direction away from the plurality of battery modules. ### Claim 3 (depends on 1) The energy storage system of claim 1, wherein the curved portion is disposed between adjacent battery modules of the plurality of battery modules. ### Claim 4 (depends on 1) The energy storage system of claim 1, wherein a distance between a center of the curved portion and a center of each of the connecting portion is 1.5% to 15% of a length of the extension pipe. ### Claim 5 (depends on 1) The energy storage system of claim 1, wherein the curved portion comprises a first layer and a second layer comprising a material different from a material of the first layer. ### Claim 6 (depends on 5) The energy storage system of claim 5, wherein the first layer comprises at least one of thermoplastic polyurethane (TPU), thermoplastic polyester elastomer (TPEE), thermoplastic vulcanizate (TPV), or thermoplastic elastomer (TPE). ### Claim 7 (depends on 5) The energy storage system of claim 5, wherein the second layer comprises at least one of polyamide (PA), polycarbonate (PC), polyetheretherketone (PEEK), polyetherketoneketone (PEKK), polyphenylene sulfide (PPS), polyether imide (PEI), polyethersulfone (PES), or polyimide (PI). ### Claim 8 (depends on 1) The energy storage system of claim 1, wherein the fire-extinguishing tube is positioned at a position at least 30% but not more than 90% of the height of each of the battery cells. ### Claim 9 (depends on 1) The energy storage system of claim 1, wherein the fire-extinguishing tube comprises at least one of polyamide (PA), polycarbonate (PC), polyetheretherketone (PEEK), polyetherketoneketone (PEKK), polyphenylene sulfide (PPS), polyether imide (PEI), polyethersulfone (PES), or polyimide (PI). ### Claim 10 (depends on 1) The energy storage system of claim 1, wherein the extension pipe and the distribution pipe are detachably connected to one another, and the distribution pipe and the fire-extinguishing tube are detachably connected to one another. ### Claim 11 An energy storage system comprising: a plurality of battery modules; a fire-extinguishing tank accommodating a fire-extinguishing agent; and a pipe part connecting the plurality of battery modules to the fire-extinguishing tank, wherein the plurality of battery modules comprise a plurality of battery cells and a fire-extinguishing tube which extends into the interior of each of the plurality of battery modules along the arrangement of the plurality of battery cells, and the pipe part comprises a first layer and a second layer comprising a material different from a material of the first layer. ### Claim 12 (depends on 11) The energy storage system of claim 11, wherein the first layer comprises at least one of thermoplastic polyurethane (TPU), thermoplastic polyester elastomer (TPEE), thermoplastic vulcanizate (TPV), or thermoplastic elastomer (TPE). ### Claim 13 (depends on 11) The energy storage system of claim 11, wherein the second layer comprises at least one of polyamide (PA), polycarbonate (PC), polyetheretherketone (PEEK), polyetherketoneketone (PEKK), polyphenylene sulfide (PPS), polyether imide (PEI), polyethersulfone (PES), or polyimide (PI). ### Claim 14 (depends on 11) The energy storage system of claim 11, wherein the pipe part comprises: a distribution pipe connected to each of the plurality of fire-extinguishing tubes; and an extension pipe including connecting portions connected to the distribution pipe, and a curved portion disposed between the connecting portions. ### Claim 15 (depends on 14) The energy storage system of claim 14, wherein the curved portion protrudes in a direction away from the plurality of battery modules. ### Claim 16 (depends on 14) The energy storage system of claim 14, wherein the curved portion is disposed between adjacent battery modules of the plurality of battery modules. ### Claim 17 (depends on 14) The energy storage system of claim 14, wherein a distance between a center of the curved portion and a center of each of the connecting portions is 1.5% to 15% of a length of the extension pipe. ### Claim 18 (depends on 11) The energy storage system of claim 11, wherein the fire-extinguishing tube is positioned at a position at least 30% but not more than 90% of a height of each of the battery cells. ### Claim 19 (depends on 11) The energy storage system of claim 11, wherein the fire-extinguishing tube comprises at least one of polyamide (PA), polycarbonate (PC), polyetheretherketone (PEEK), polyetherketoneketone (PEKK), polyphenylene sulfide (PPS), polyether imide (PEI), polyethersulfone (PES), or polyimide (PI). ### Claim 20 (depends on 14) The energy storage system of claim 14, wherein the extension pipe and the distribution pipe are detachably connected to one another, and the distribution pipe and the fire-extinguishing tube are detachably connected to one another.