# US 2025/0082974 A1 · A battery device comprising a tube including a cooling and/or fire extinguishing medium > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0082974 A1 - Document ID: US20250082974A1 - Status: Published application - Kind: A1 - Application number: 18/725,182 - Filed: 2022-12-20 - Published: 2025-03-13 - Earliest claimed: 2021-12-28 - Assignees: Polarium Energy Solutions AB - Applicants: Polarium Energy Solutions AB - Inventors: Ulf KROHN; Johan KULLBERG - Web page: https://patentgrep.com/patent/US20250082974A1 ## CPC - A62C 3/16: in electrical installations, e.g. cableways - A62C 35/10: Containers destroyed or opened by flames or heat - H01M 10/613: Cooling or keeping cold - H01M 10/643: Cylindrical cells - H01M 10/6556: Solid parts with flow channel passages or pipes for heat exchange (closed pipes H01M10/6552) - H01M 10/6568: characterised by flow circuits, e.g. loops, located externally to the cells or cell casings - H01M 50/213: adapted for cells having curved cross-section, e.g. round or elliptic (H01M50/209, H01M50/216 take precedence) - H01M 50/218: characterised by the material - H01M 50/24: adapted for protecting batteries from their environment, e.g. from corrosion (thermal insulation H01M10/658) - H01M 50/505: comprising a single busbar - H01M 50/682: accommodated in battery or cell casings - H01M 10/6564: using compressed gas - Y02E 60/10: Energy storage using batteries - 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) - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A battery device (100) is provided. The battery device comprises a battery cell pack (105) including a plurality of battery cells, and a tube (101) disposed on the battery cell pack along a winding path such that each battery cell (118) of the plurality of battery cells is arranged adjacent to a portion of the tube. The tube includes a cooling and/or fire extinguishing medium (150). The battery device comprises a housing (102), in which the battery cell pack and the tube are arranged. For each battery cell, a respective portion (101a) of the tube arranged adjacent to the battery cell comprises a material configured to rupture upon exposure to heat and/or a flame produced by thermal runaway of the battery cell. The tube may comprise a flexible and/or stretchable material and it may be pressurized by being filled with the cooling and/or fire extinguishing medium such that the flexible and/or stretchable material stretches. ## Claims ### Claim 1 A battery device comprising: a battery cell pack including a plurality of battery cells; a tube disposed on the battery cell pack along a winding path such that each battery cell of the plurality of battery cells is arranged adjacent to a portion of the tube, wherein the tube comprises a flexible and/or stretchable material and includes a cooling and/or fire extinguishing medium; and a housing, in which the battery cell pack and the tube are arranged; wherein, for each battery cell, a respective portion of the tube arranged adjacent to the battery cell comprises a material configured to rupture upon exposure to heat and/or a flame produced by thermal runaway of the battery cell, and wherein the tube is pressurized by being filled with the cooling and/or fire extinguishing medium such that the flexible and/or stretchable material stretches, wherein said housing forms a sealed container. ### Claim 2 (depends on 1) A battery device according to claim 1, further comprising a gas container fluidly connected to the tube and configured to pressurize the tube. ### Claim 3 (depends on 1) A battery device according to claim 1, wherein the cooling and/or fire extinguishing medium comprises liquid. ### Claim 4 (depends on 3) A battery device according to claim 3, wherein the cooling and/or fire extinguishing medium comprises water. ### Claim 5 (depends on 1) A battery device according to claim 1, wherein the tube includes between 1 dL and 4 dL of cooling and/or fire extinguishing medium. ### Claim 6 (depends on 1) A battery device according to claim 1, wherein the tube comprises a plastic or a non-electrically conductive material. ### Claim 7 (depends on 1) A battery device according to claim 1, wherein the tube comprises aluminium. ### Claim 8 (depends on 1) A battery device according to claim 1, wherein the tube is sandwiched between the battery cell pack and a heat- and fire-resistant material. ### Claim 9 (depends on 1) A battery device according to claim 1, wherein the tube is disposed on an electrically conductive layer arranged in contact with the battery cell pack to electrically connect the plurality of battery cells. ### Claim 10 (depends on 9) A battery device according to claim 9, wherein the electrically conductive layer comprises a plurality of openings arranged over respective battery cells of the plurality of battery cells. ### Claim 11 (depends on 1) A battery device according to claim 1, wherein the tube is configured to discharge the cooling and/or fire extinguishing medium through a ruptured portion towards said cell, and wherein the discharged cooling and/or fire extinguishing medium is configured to provide cooling for one or more cells which are neighbouring to said cell. ### Claim 12 (depends on 1) A battery device according to claim 1, further comprising a cooling system configured to provide cooling to the battery cell pack, and wherein the tube is separated from the cooling system and dedicated for cooling heat, and/or extinguishing a flame, originating at the battery cell upon thermal runaway.