# US 11,309,612 B2 · Separating device for a battery module, battery module, and motor vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,309,612 B2 - Document ID: US11309612B2 - Status: Granted - Kind: B2 - Application number: 17/085,204 - Filed: 2020-10-30 - Published: 2021-05-13 - Granted: 2022-04-19 - Earliest claimed: 2019-11-12 - Assignees: Audi AG - Applicants: Audi AG - Inventors: Dirk Hoefner - Web page: https://patentgrep.com/patent/US11309612B2 ## CPC - H01M 10/61: Types of temperature control - H01M 50/403: Manufacturing processes of separators, membranes or diaphragms - H01M 10/625: Vehicles - H01M 10/647: Prismatic or flat cells, e.g. pouch cells - H01M 10/655: Solid structures for heat exchange or heat conduction - H01M 10/6555: arranged between the cells - H01M 50/209: adapted for prismatic or rectangular cells (H01M50/216 takes precedence) - 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 50/293: characterised by the material - H01M 50/30: Arrangements for facilitating escape of gases - H01M 50/383: Flame arresting or ignition-preventing means - H01M 50/44: Fibrous material - H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane - Y02E 60/10: Energy storage using batteries - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - 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 - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A separating device for a battery module. The separating device includes a first separating element and a second separating element, which are arranged congruently with respect to one another and adjacent one another. Furthermore, the first separating element and the second separating element enclose a chamber between them, and the chamber is filled with a flame-retarding and/or insulating fluid. ## Claims ### Claim 1 A separating device for a battery module comprising: a first separating element and a second separating element, which are arranged congruently with respect to one another and adjacent one another, wherein the first separating element and the second separating element enclose a sealed chamber therebetween, wherein the first separating element and the second separating element each have a plurality of channel-shaped embossments for forming the sealed chamber, wherein the plurality of channel-shaped embossments of the first separating element each extend away from the second separating element, and the plurality of channel-shaped embossments of the second separating element each extend away from the first separating element, wherein the plurality of channel-shaped embossments of the first separating element and of the second separating element are arranged opposite one another, and wherein the sealed chamber is filled with a flame-retarding and/or insulating fluid. ### Claim 2 (depends on 1) The separating device according to claim 1, wherein the flame-retarding and/or insulating fluid is formed as a gas. ### Claim 3 (depends on 1) The separating device according to claim 1, wherein the separating device has a third separating element which is arranged between the first separating element and the second separating element, and wherein the third separating element is formed as a fabric board or fiberboard. ### Claim 4 (depends on 1) The separating device according to claim 1, wherein the separating device has at least one burst opening through which the flame-retarding and/or insulating fluid can escape when a temperature and/or a pressure in the sealed chamber reaches a predetermined value. ### Claim 5 (depends on 1) The separating device according to claim 1, wherein the plurality of channel shaped embossments are arranged concentrically with respect to one another. ### Claim 6 (depends on 1) The separating device according to claim 1, wherein the first separating element and the second separating element each comprise a central embossment for forming the sealed chamber, wherein the central embossment is concentric with respect to the plurality of channel-shaped embossments. ### Claim 7 (depends on 1) The separating device according to claim 1, wherein the first separating element and the second separating element are formed from a heat-conducting material. ### Claim 8 A battery module comprising: several battery cells and at least one separating device, the at least one separating device comprising: a first separating element and a second separating element, which are arranged congruently with respect to one another and adjacent one another, wherein the first separating element and the second separating element enclose a sealed chamber therebetween, wherein the first separating element and the second separating element each have a plurality of channel-shaped embossments for forming the sealed chamber, wherein the plurality of channel-shaped embossments of the first separating element each extend away from the second separating element, and the plurality of channel-shaped embossments of the second separating element each extend away from the first separating element, wherein the plurality of channel-shaped embossments of the first separating element and of the second separating element are arranged opposite one another, wherein the sealed chamber is filled with a flame-retarding and/or insulating fluid, and wherein the at least one separating device is arranged between two adjacent battery cells. ### Claim 9 (depends on 8) The battery module according to claim 8, wherein the battery module further comprises a heat-dissipation device comprising at least one of a thermally conductive paste and a cooling element, wherein the battery cells and the at least one separating device are arranged on the heat-dissipation device in a vertical direction of the battery module. ### Claim 10 (depends on 8) A motor vehicle having the battery module according to claim 8. ### Claim 11 (depends on 2) The separating device according to claim 2, wherein the gas comprises at least one of carbon dioxide, halogen, and monoammonium phosphate. ### Claim 12 (depends on 2) The separating device according to claim 2, wherein the separating device has at least one burst opening through which the flame-retarding and/or insulating fluid can escape when a temperature and/or a pressure in the sealed chamber reaches a predetermined value. ### Claim 13 (depends on 3) The separating device according to claim 3, wherein the separating device has at least one burst opening through which the flame-retarding and/or insulating fluid can escape when a temperature and/or a pressure in the sealed chamber reaches a predetermined value. ### Claim 14 (depends on 7) The separating device according to claim 7, wherein the heat-conducting material is steel. ### Claim 15 (depends on 1) The separating device according to claim 1, wherein each of the plurality of channel-shaped embossments is formed to increase a stiffness of each of the first separating element and the second separating element. ### Claim 16 (depends on 8) The battery module according to claim 8, wherein each of the plurality of channel-shaped embossments is formed to increase a stiffness of each of the first separating element and the second separating element.