# US 12,191,537 B2 · Integrated electrical and thermal energy storage > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,191,537 B2 - Document ID: US12191537B2 - Status: Granted - Kind: B2 - Application number: 17/358,597 - Filed: 2021-06-25 - Published: 2022-12-29 - Granted: 2025-01-07 - Earliest claimed: 2021-06-25 - Assignees: Rolls-Royce North American Technologies Inc. - Applicants: Rolls-Royce North American Technologies, Inc. - Inventors: Patrick Gore - Web page: https://patentgrep.com/patent/US12191537B2 ## CPC - H01M 8/04029: Heat exchange using liquids - H01M 8/188: {by recharging of redox couples containing fluids; Redox flow type batteries} - H01M 8/18: Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells - Y02E 60/50: Fuel cells - 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 system includes a flow battery and a temperature control system. The flow battery is configured to thermally manage a thermal load. In some embodiments, the flow battery is also configured to electrically power the thermal load. The temperature control system is configured to cool electrolyte in the flow battery in response to the thermal load being inactive. ## Claims ### Claim 1 A system comprising: a flow battery; a temperature control system configured to cool an electrolyte of the flow battery in response to a thermal load being inactive; and a circulation system configured to circulate a fluid between the flow battery, the temperature control system, and the thermal load, wherein the temperature control system is fluidly positioned in the circulation system downstream from the thermal load and upstream from the flow battery, such that the fluid, after passing through the thermal load, passes through the temperature control system before reaching the flow battery, and wherein the temperature control system is configured to cool the fluid received from the thermal load when the thermal load is inactive and deliver the cooled fluid to the flow battery to cool the electrolyte without the use of an additional thermal storage device. ### Claim 2 (depends on 1) The system of claim 1, wherein the fluid cools the thermal load when the thermal load is active. ### Claim 3 (depends on 1) The system of claim 1, wherein the temperature control system is configured to deliver the fluid to a heat exchanger positioned in an electrolyte tank of the flow battery. ### Claim 4 (depends on 1) The system of claim 1, wherein the temperature control system is configured to heat the electrolyte in response to the thermal load being active. ### Claim 5 (depends on 1) The system of claim 1, wherein the temperature control system comprises a vapor cycle system. ### Claim 6 (depends on 1) The system of claim 1, further comprising a heat exchanger configured to transfer heat from the fluid to the electrolyte when the electrolyte is flowing from an electrolyte tank to a reactor of the flow battery. ### Claim 7 (depends on 6) The system of claim 6, wherein the circulation system is configured to deliver the fluid from the heat exchanger to the temperature control system. ### Claim 8 (depends on 7) The system of claim 7, wherein the circulation system is configured to bypass the heat exchanger in response to the thermal load being inactive. ### Claim 9 (depends on 1) The system of claim 1, wherein the flow battery is configured to electrically power the thermal load. ### Claim 10 A system comprising: a thermal load; a flow battery configured to: electrically power the thermal load; and cool the thermal load with an electrolyte without the use of an additional thermal storage device; a temperature control system configured to cool the electrolyte; a first heat exchanger positioned in an electrolyte tank of the flow battery, the first heat exchanger configured to exchange heat between the electrolyte in the electrolyte tank and a liquid used to cool the thermal load; and a second heat exchanger positioned between the electrolyte tank and a reactor of the flow battery, the second heat exchanger configured to: receive the fluid from the thermal load; and heat the electrolyte with the fluid as the electrolyte flows from the electrolyte tank to the reactor. ### Claim 11 (depends on 10) The system of claim 10, wherein the flow battery is configured to cool the fluid with the electrolyte in order to cool the thermal load. ### Claim 12 (depends on 11) The system of claim 11, wherein the temperature control system is configured to cool the fluid in order to cool the electrolyte in response to the thermal load being inactive. ### Claim 13 A system comprising: a flow battery; a temperature control system connected in parallel with a thermal load, the temperature control system configured to cool an electrolyte of the flow battery in response to a thermal load being inactive; and a circulation system configured to: circulate the fluid between the flow battery, the temperature control system, and the thermal load; bypass the thermal load in response to the thermal load being inactive; and bypass the temperature control system in response to the thermal load being active, wherein the circulation system does not include a bypass valve configured to bypass the flow battery.