# US 11,444,345 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 11,444,345 B2 - Document ID: US11444345B2 - Status: Granted - Kind: B2 - Application number: 17/085,142 - Filed: 2020-10-30 - Published: 2021-05-13 - Granted: 2022-09-13 - Earliest claimed: 2019-11-12 - Assignees: Audi AG - Applicants: Audi AG - Inventors: Dirk Hoefner - Web page: https://patentgrep.com/patent/US11444345B2 ## CPC - H01M 10/61: Types of temperature control - H01M 10/6555: arranged between the cells - H01M 10/613: Cooling or keeping cold - H01M 10/625: Vehicles - H01M 10/647: Prismatic or flat cells, e.g. pouch cells - H01M 10/653: characterised by electrically insulating or thermally conductive materials - H01M 10/655: Solid structures for heat exchange or heat conduction - H01M 50/20: Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders (structural combination of accumulators with charging apparatus H01M10/46) - 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 50/383: Flame arresting or ignition-preventing means - H01M 50/394: {Gas-pervious parts or elements} - 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. The first separating element and the second separating element are formed from a heat-conducting material. Furthermore, the two separating elements enclose a chamber and the first separating element and the second separating element have embossments corresponding to one another for forming the chamber, wherein the embossments of the first separating element extend away from the second separating element and the embossments of the second separating element extend away from the first separating element. ## 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 are formed from a heat-conducting material, the first separating element and the second separating element enclose a chamber between them, the first separating element and the second separating element have embossments corresponding to one another for forming the chamber, the embossments of the first separating element extend away from the second separating element and the embossments of the second separating element extend away from the first separating element, the embossments of the first separating element and of the second separating element are arranged opposite one another, the chamber is divided into three concentric chamber regions, which are formed by the embossments of the first separating element and of the second separating element, and a first chamber region and a second chamber region extend about a third chamber region. ### Claim 2 (depends on 1) The separating device according to claim 1, wherein the embossments have a rectangular contour. ### Claim 3 (depends on 1) The separating device according to claim 1, wherein the first separating element and the second separating element are formed from steel as a heat-conducting material. ### Claim 4 (depends on 1) The separating device according to claim 1, wherein the chamber is filled with carbon dioxide. ### Claim 5 (depends on 1) The separating device according to claim 1, wherein the chamber is filled with a flame-retarding or insulating liquid. ### Claim 6 (depends on 1) The separating device according to claim 1, further comprising: a third separating element arranged between the first separating element and the second separating element, wherein the third separating element is formed as a fabric board or a fiberboard. ### Claim 7 A battery module, comprising: several battery cells; and at least one separating device including: 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 are formed from a heat-conducting material, the first separating element and the second separating element enclose a chamber between them, the first separating element and the second separating element have embossments corresponding to one another for forming the chamber, the embossments of the first separating element extend away from the second separating element and the embossments of the second separating element extend away from the first separating element, the embossments of the first separating element and of the second separating element are arranged opposite one another, the chamber is divided into three concentric chamber regions, which are formed by the embossments of the first separating element and of the second separating element, the at least one separating device is arranged between two adjacent battery cells, and a first chamber region and a second chamber region extend about a third chamber region. ### Claim 8 (depends on 7) The battery module according to claim 7, wherein the battery module has a heat-dissipation device, 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 9 (depends on 8) The battery module according to claim 8, wherein the heat-dissipation device includes a thermally conductive paste and a cooling element and the thermally conductive paste is arranged between the cooling element and the battery cells. ### Claim 10 (depends on 7) A motor vehicle having the battery module according to claim 7. ### Claim 11 (depends on 1) The separating device according to claim 1, wherein the chamber is filled with a halogen. ### Claim 12 (depends on 1) The separating device according to claim 1, wherein the chamber is filled with monoammonium phosphate. ### Claim 13 (depends on 1) The separating device according to claim 1, wherein the embossments have an oval contour.