# US 2022/0045381 A1 · Systems and methods for battery thermal management > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2022/0045381 A1 - Document ID: US20220045381A1 - Status: Published application - Kind: A1 - Application number: 16/989,124 - Filed: 2020-08-10 - Published: 2022-02-10 - Earliest claimed: 2020-08-10 - Assignees: Cummins Power Generation Inc. - Applicants: Cummins Power Generation Inc. - Inventors: Pushkar Vaidya - Web page: https://patentgrep.com/patent/US20220045381A1 ## CPC - H01M 10/627: Stationary installations, e.g. power plant buffering or backup power supplies - H01M 10/633: characterised by algorithms, flow charts, software details or the like - H01M 10/635: based on ambient temperature - H01M 10/66: Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells - H02J 7/50: acting upon multiple batteries simultaneously or sequentially - H02J 7/90: Regulation of charging or discharging current or voltage - H01M 10/63: Control systems (charging or discharging in response to temperature H01M10/44 {, H01M10/443}; measurement of temperature H01M10/48 {, H01M10/486}) - H01M 10/6561: Gases - H01M 10/6569: Fluids undergoing a liquid-gas phase change or transition, e.g. evaporation or condensation (heat pipes H01M10/6552) - H01M 2220/10: Batteries in stationary systems, e.g. emergency power source in plant - H02J 2207/20: Charging or discharging characterised by the power electronics converter - Y02E 60/10: Energy storage using batteries - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract Systems and methods for managing the temperature of an energy storage system are provided. In some embodiments, the energy storage system includes a housing, a first terminal, a second terminal, an energy storage element disposed within the housing, a thermal management system, and a controller. In some embodiments, the energy storage element are configured to electrically connect to a load or a grid via the second terminal. The thermal management system is configured to manage a temperature within the housing and also configured to receive power from an external power source via the first terminal. ## Claims ### Claim 1 An energy storage system comprising: a housing; a first terminal; a thermal management system configured to manage a temperature within the housing, the thermal management system configured to receive power from an external power source via the first terminal; a second terminal; an energy storage element disposed within the housing, the energy storage element configured to electrically connect to a grid via the second terminal; and a controller coupled to the energy storage unit and the thermal management system. ### Claim 2 (depends on 1) The energy storage system of claim 1, wherein the thermal management system is further configured to receive power from the energy storage element. ### Claim 3 (depends on 2) The energy storage system of claim 2, wherein the controller is configured to electrically couple the thermal management system to the energy storage element during a first state of the energy storage system, and electrically decouple the thermal management system from the energy storage element during a second state of the energy storage system. ### Claim 4 (depends on 3) The energy storage system of claim 3, wherein the first state comprises the energy storage element coupled to the grid and supplying power to the load or grid or receiving power from the grid, and wherein the second state comprises the energy storage system in a storage mode. ### Claim 5 (depends on 4) The energy storage system of claim 4, further comprising a switch coupled to the controller, the controller configured to selectively control the switch such that the thermal management system is electrically coupled to an output of the energy storage element in the first state, and the thermal management system is electrically decoupled from the energy storage element in the second state. ### Claim 6 (depends on 1) The energy storage system of claim 1, the thermal management system further comprising a controller coupled to a compressor, a condenser, and evaporator, the controller configured to control an operational state of the compressor. ### Claim 7 (depends on 6) The energy storage system of claim 6, wherein the compressor comprises a variable speed direct current (DC) compressor, an alternating current (AC) compressor, or a variable frequency drive (VFD) configured to receive both DC and AC. ### Claim 8 (depends on 6) The energy storage system of claim 6, further comprising an AC to DC power converter configured to receive AC power from the external power source and provide the thermal management system with DC power. ### Claim 9 (depends on 1) The energy storage system of claim 1, wherein the energy storage unit is configured to provide direct current (DC) power to the thermal management system via a DC to DC converter. ### Claim 10 (depends on 1) The energy storage system of claim 1, wherein the energy storage element comprise one or more batteries, and wherein the energy storage system includes an inverter electrically coupled to an output of the energy storage element. ### Claim 11 A controller of an energy storage system comprising: a processor configured to: detect that the energy storage system is in a first state, the first state comprising the energy storage system configured to electrically provide or receive power to a grid via a second terminal of the energy storage system; in response to determining that the energy storage system is in the first state, electrically couple an energy storage element of the energy storage system to a thermal management system; detect that the energy storage system is in a second state; and in response to determining that the energy storage system is in the second state, electrically de-couple an energy storage element of the energy storage system from the thermal management system and electrically couple the thermal management system to a first terminal, the first terminal configured to relay power from an external power source to the thermal management system. ### Claim 12 (depends on 11) The controller of claim 11, wherein determining that the energy storage system is in a second state is based on a manual input, and wherein the second state comprises the energy storage system in a storage mode. ### Claim 13 (depends on 11) The controller of claim 11, wherein the thermal management system is configured to maintain a temperature of an area around the energy storage unit. ### Claim 14 (depends on 11) The controller of claim 11, wherein the thermal management system comprises a thermal management controller coupled to a condenser, an evaporator, and a compressor. ### Claim 15 (depends on 14) The controller of claim 14, wherein to electrically couple the energy storage element of the energy storage system to the thermal management system, the controller electrically couples the thermal system controller to an output of the energy storage unit using a switch. ### Claim 16 (depends on 15) The controller of claim 15, wherein to electrically couple the thermal management system to the first terminal, the controller electrically couples the thermal system controller to the first terminal using a second switch. ### Claim 17 A method of controlling a temperature of an energy storage system comprising: determining, by a controller of an energy storage system, that the energy storage system is in a first state, the first state comprising the energy storage system configured to provide electrical power to a grid or load via a second terminal of the energy storage system; in response to determining that the energy storage system is in the first state, electrically coupling, via the controller, an energy storage element of the energy storage system to a thermal management system of the energy storage system; determining, via the controller, that the energy storage system is in a second state; and in response to determining that the energy storage system is in the second state, electrically coupling, via the controller, the thermal management system to a first terminal. ### Claim 18 (depends on 17) The method of claim 17, further comprising, in response to determining that the energy storage system is in the second state, electrically de-coupling, via the controller, an energy storage unit of the energy storage system to a thermal management system. ### Claim 19 (depends on 17) The method of claim 17, wherein determining that the energy storage system is in the first state comprises determining that the energy storage system has been turned on. ### Claim 20 (depends on 17) The method of claim 17, wherein determining that the energy storage system is in the first state comprises determining that the energy storage system is receiving electrical power from the grid via the second terminal.