# US 2025/0096358 A1 · Device for thermal management of battery cells of a battery and battery > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0096358 A1 - Document ID: US20250096358A1 - Status: Published application - Kind: A1 - Application number: 18/883,143 - Filed: 2024-09-12 - Published: 2025-03-20 - Earliest claimed: 2023-09-14 - Assignees: Röchling Automotive SE & Co. KG - Applicants: Röchling Automotive SE - Inventors: Claudia Tremonti; Peter Dill; Enrico Collatuzzo; Davide Monsorno - Web page: https://patentgrep.com/patent/US20250096358A1 ## CPC - H01M 10/615: Heating or keeping warm - H01M 10/6557: arranged between the cells - H01M 10/613: Cooling or keeping cold - H01M 10/63: Control systems (charging or discharging in response to temperature H01M10/44 {, H01M10/443}; measurement of temperature H01M10/48 {, H01M10/486}) - H01M 10/643: Cylindrical cells - H01M 10/6568: characterised by flow circuits, e.g. loops, located externally to the cells or cell casings - H01M 10/657: by electric or electromagnetic means - H01M 10/6571: Resistive heaters (arrangements for heating the battery by its resistance to the internal current H01M10/637) - H01M 50/213: adapted for cells having curved cross-section, e.g. round or elliptic (H01M50/209, H01M50/216 take precedence) - H01M 50/291: characterised by their shape - Y02E 60/10: Energy storage using 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 ## Abstract A device for thermal management of battery cells of a battery, the device having at least one polymer element, having one or more polymers, in particular thermoplastic, wherein the at least one polymer element includes at least one fluid channel having an inlet and an outlet, wherein the at least one fluid channel is adapted such to provide a fluid flow in at least one direction, preferably in at least two directions, preferably in at three directions parallel to a main direction of extension of the polymer element, in particular wherein at least two of the three directions are parallel to each other. ## Claims ### Claim 1 A device for thermal management of battery cells of a battery, comprising at least one polymer element, comprising one or more polymers, in particular thermoplastic, wherein said at least one polymer element comprises at least one fluid channel having an inlet and an outlet, wherein said at least one fluid channel is adapted such to provide a fluid flow in at least one direction, preferably in at least two directions, preferably in at least three directions, parallel to a main direction of extension of said at least one polymer element, in particular wherein at least two of said at least three directions are parallel to each other. ### Claim 2 (depends on 1) The device according to claim 1, wherein said at least one polymer element comprises at least one heating element, preferably wherein said heating element comprises at least one metal track for carrying electric current. ### Claim 3 (depends on 2) The device according to claim 2, wherein said at least one heating element is meander-shaped, preferably wherein said at least one meander-shaped heating element comprises loops of at least two different diameters. ### Claim 4 (depends on 1) The device according to claim 1, wherein said at least one polymer element is shaped such that at least 20%, preferably at least 30%, preferably at least 40%, preferably at least 50%, preferably at least 60%, preferably at least 70%, preferably at least 80%, preferably at least 90%, preferably covering all of a circumferential surface of a battery cell. ### Claim 5 (depends on 2) The device according to claim 2, wherein said at least one heating element is provided in a wall of said at least one polymer element. ### Claim 6 (depends on 1) The device according to claim 1, wherein said at least one polymer element comprises at least two half-shells, materially bonded to each other. ### Claim 7 (depends on 6) The device according to claim 6, wherein said at least two half-shells are adapted to provide at least one fluid channel between them. ### Claim 8 (depends on 1) The device according to claim 1, wherein said at least one polymer element comprises curved side walls extending along the at least one direction. ### Claim 9 (depends on 1) The device according to claim 1, wherein said curved side walls have concave form, in particular having a regular pattern of concave sections along the main direction of extension. ### Claim 10 (depends on 9) The device according to claim 9, wherein sides of said at least one polymer element opposite to each other along the main direction of extension have concave sections displaced from one another. ### Claim 11 (depends on 1) A battery comprising a plurality of battery cells and at least a device according to claim 1. ### Claim 12 (depends on 11) The battery according to claim 11, wherein a base for holding the battery cells is provided, wherein said device is arranged, in particular releasably, on said base, preferably said base is integrally formed with said device. ### Claim 13 (depends on 11) The battery according to claim 11, wherein said at least one polymer element provides at least one mounting seat for a side surface of a battery cell along the main direction of extension of the battery cell. ### Claim 14 (depends on 11) The battery according to claim 11, wherein said mounting seat is shaped such that said mounting seat covers at least 20%, preferably at least 30%, preferably at least 40%, preferably at least 50%, preferably at least 60%, preferably at least 70%, preferably at least 80%, preferably at least 90%, preferably all of a circumferential surface of a battery cell when placed in said mounting seat. ### Claim 15 (depends on 11) A battery system, comprising a battery according to claim 11 and a battery management system, said battery management system being adapted to control provisioning of a coolant or heating fluid for the device, preferably based on a temperature of the battery. ### Claim 16 (depends on 1) The Device according to claim 1, wherein said at least one polymer element is a non-flexible element.