The temperature sensor 46 may be located anywhere within the battery cell stack 22 as desired. Similarly, if the general location of the dielectric coolant 28 at the moment of boiling is located within the fluid channels 26 of the battery cells 20 in the center area and toward an opposing side 52 of the battery cell stack 22, the dielectric coolant 28 will tend to follow flow path âBâ. No. The coolant 130 provides an external heat exchange with the vehicle, where the vehicle is a hybrid vehicle. The battery assembly 18 typically is fully immersed within the dielectric coolant 28 and the dielectric coolant 28 is received within the fluid channels 26, completely contacting each of the battery cells 20. 18, 2013 from: http://www.nrel.gov/vehiclesandfuels/energystorage/pdfs/jteâ2003-633âswâap.pdf. batteries. loops, located externally to the cells or cell casings, Accumulators with non-aqueous electrolyte, Rocking-chair batteries, i.e. The Lithium Ion battery cooling system of, 13. The sealing of the battery cells generally begins with providing one of the plastic coated metal layers with a cavity, sometimes called a âbutter dishâ shape. Retrieved online on Mar. PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551). The technology in development is based on cell immersion cooling using dielectric fluid. fuel, coolant, brake fluid, filters, and batteries. 19. A 2016 comparative study on cooling methods for Li-ion batteries considered four cell-cooling methods — air cooling, direct liquid immersion, indirect liquid cooling, and fin cooling. Extreme duty electric motor cooling with lubrication. 3M Fluorinert Electronic Liquids are dielectric fluids for heat transfer and immersion cooling. Liquid cooling methods for battery cells and packs include conductive looped cold plates or full immersion if a dielectric fluid is deployed. The Lithium Ion battery cooling system of, 14. The battery cell for incorporation in a battery pack assembly is thereby provided. A heating element is disposed within the interior space and heats the dielectric fluid. Cooling and Preheating of Batteries in Hybrid Electric Vehicles:, Ahmad Pesaran, The 6th ASME-JSME Thermal Engineering Joint Conference, Mar. A method of cooling a vehicle battery pack comprising the steps of: providing a sealed container having an interior space; providing a battery assembly within the interior space of the container and including a plurality of battery cells having at least one fluid channel formed therebetween; providing a dielectric fluid within the interior space; immersing at least a portion of the battery assembly with the dielectric fluid; causing the dielectric fluid to flow about the plurality of battery cells throughout the interior space of the container; heating the dielectric fluid during start up of the vehicle to heat the plurality of battery cells, wherein a heating element disposed within the interior space of the sealed container is used to cool the dielectric fluid; and, cooling the dielectric fluid during operation of the vehicle to maintain. A battery assembly 18 is disposed within the interior space 16 of the container 14. In another embodiment, the plurality of battery cells 20 is Li-ion batteries for use in a Battery Electric Vehicle (BEV). Retrieved online on Mar. The battery cell components are disposed inside the cavity of the plastic coated metal layer. Each gap 24 forms the fluid channel 26 between adjacent battery cells 20. A dielectric fluid is disposed within the at least one fluid channel. AmpCool Dielectric Coolants are materially compatible with all materials commonly used in electric motors, hydraulic systems, and with all battery chemistries. Cooling of a lithium ion battery using phase change material with air/dielectric fluid media: A numerical study T Amalesh and N Lakshmi Narasimhan Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 2019 234 : 5 , 722-738 The cooling element may also be formed from copper. A dielectric coolant 28 is disposed within the interior space 16 of the container 14 and the fluid level shown is such that the battery assembly 18 is completely immersed within the dielectric coolant 28. The Lithium Ion battery cooling system of, 16. In another embodiment, the dielectric coolant 28 may be conditioned to have a boiling point at or near a desired operating temperature of the battery cells 20. Keep fluid level above the plates in each cell, using distilled water. With vehicle range related to battery pack thermal management, the i-CoBat project - a collaboration between M&I Materials, WMG and Ricardo - aims … Conventional cooling systems have included air to air cooling, cooling plates or fins sandwiched between individual battery cells within the battery pack along with heat sinks in the same location. With this cooling method, IT components are completely immersed in a steady-flowing dielectric ElectroSafe fluid, which has 1,200 times the heat capacity of air. The Lithium Ion battery cooling system of, 12. Full immersion cooling of battery cells eliminates heavy and complex heat spreaders and water coolant containment housings, while providing increased flexibility in battery cell placement. Buy direct from the manufacturer and save! When overheated or otherwise exposed to high-temperature environments, undesirable effects can impact the operation of lithium-ion batteries. The battery cells 20 are preferably stacked to form a battery cell stack 22. A coolant temperature sensor 46 measures the dielectric coolant 28 temperature at the outlet 44 of the cooling element 38. 10. The present disclosure relates to a vehicle battery pack with a self-contained liquid cooling system. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries, GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS, TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE, REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION, Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation, CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION, Other road transportation technologies with climate change mitigation effect, Energy storage systems for electromobility, e.g. There are 3 common battery thermal management methods used today: Convection to air either passively or forced. That brings us to Tesla’s patent application where it talks about using an engineered dielectric fluid for the cooling fluid. The cooling systems may include cooling plates or fins sandwiched between individual battery cells within the battery pack. One type of battery cell is known as the lithium-ion battery. A coolant level sensor 48 measures the level of the dielectric coolant 28 within the container 14. MIVOLT CL200 MIVOLT CL200 MIVOLT FF is a range of readily biodegradable dielectric fluids for the direct immersion cooling of aerospace electronics. As in the dielectric fluid, the micro-EDM process takes place; therefore, several properties of dielectric fluid, such as viscosity, dielectric strength, cooling capability, and chemical compositions play significant roles for the efficient and stable discharge during machining. a cooling element disposed within the interior space configured to cool the dielectric fluid. a substantially uniform surface temperature over each of the plurality battery cells, wherein a cooling element disposed within the interior space of the sealed container is used to cool the dielectric fluid. Li-ion batteries have many uses thanks to their high energy density, long life cycle, and low rate of self-discharge. M&I Materials Launches New Range of Dielectric Liquids for Immersion Cooling of EV Batteries and Charging Points. Multiple battery cells 20 form multiple modules 12. The cooling element 38 may be a chilled water condenser having an inlet 42 and an outlet 44 extending beyond the walls of the sealed container 14 for importing and exporting water for the cooling element 38. In one embodiment, the dielectric coolant 28 may be halogenated. A plurality of individual battery cells can be provided in a battery pack to provide an amount of power sufficient to operate electric vehicles. 3M™ Fluorinert™ and Novec™ fluids have both properties; are non flammable and low in toxicity over a range of boiling pints with a dielectric strength of ~40kV. We offer everything from antifreeze, motor oil, brake cleaner, battery cleaner, transmission fluid, and so much more. Cooling systems are typically employed with lithium-ion battery packs to militate against the undesirable overheating conditions. Castrol Dielectric Battery Coolant e-Fluid has a lower viscosity than conventional dielectric coolants, increasing cooling efficiency and protecting batteries against electrical breakdown. 2 is a plan view of multiple battery cooling systems of the present invention connected in series. Learn about the properites of Fluorinert liquids, the applications, history, and how the fluid exists in the world of heat transfer products. resistances so battery cell and pack cooling is paramount. Cooling and Preheating of Batteries in Hybrid Electric Vehicles:, Ahmad Pesaran, The 6th ASME-JSME Thermal Engineering Joint Conference, Mar. RELEASE BY SECURED PARTY;ASSIGNOR:WILMINGTON TRUST COMPANY;REEL/FRAME:034186/0776, Free format text: The fiber-reinforced plastic design is not only lightweight, but also extremely robust. The heating element 34 is shown as a single element; however, multiple heating elements 34 such as heating plates may be provided. In the embodiment shown, a gap 24 between each battery cell 20 is between 0.25-0.50 mm, forming a fluid channel 26 between each battery cell 20. The dielectric coolant 28 is in contact with the battery cells 20 through the fluid channels 26 formed by gaps 24. Contact our Service Department for more information! The cooled dielectric coolant 28 will return to the base area 36, generally following either coolant paths âAâ or âB.â Where the general location of the dielectric coolant 28 at the moment of boiling is located within the fluid channels 26 of the battery cells 20 in the center area and toward a side 50 of the battery cell stack 22, the dielectric coolant 28 will tend to follow flow path âAâ. It is understood that other heating element types may be used. The method includes the steps of providing a closed and sealed container 14. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Ricardo joins forces with M&I Materials and WMG with funding through the British government. Typical prismatic battery cells have a pair of plastic coated metal layers fused around a periphery of the battery cell in order to seal the battery cell components. The i-CoBat project—a collaboration between M&I Materials, WMG and Ricardo —aims to develop and to demonstrate a new form of EV battery cooling technology based on cell immersion cooling using dielectric fluid.. In a first embodiment, a vehicle battery pack with a self-contained liquid cooling system comprises a sealed container having an interior space; a battery assembly disposed within the interior space of the container, the battery assembly including a plurality of battery cells having at least one fluid channel formed therebetween; a dielectric fluid disposed within the at least one fluid channel in contact with the battery cells of the battery assembly and configured to heat and cool the battery assembly; a heating element disposed within the interior space configured to heat the dielectric fluid; and a cooling element disposed within the interior space configured to cool the dielectric fluid. Note also the relatively stable viscosity of the Dielectric fluid as temperatures range from 0 to 100 degrees Celsius. The Lithium Ion battery cooling system of, 17. A coolant level sensor 48 is also provided and is located near the upper area 40 of the container 14 to measure the fluid level of the dielectric coolant 28 within the container 14, ensuring complete immersion of the battery assembly 18 within the dielectric coolant 28. 1, a vehicle battery pack with a self-contained liquid cooling system 10 of the present disclosure is there shown. Dielectric Coolants for single-phase, liquid immersion cooling of batteries, electric motors, and energy storage. The Lithium Ion battery cooling system of, 18. GM GLOBAL TECHNOLOGY OPERATIONS LLC, MICHIGAN, ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MCDONALD, STEPHEN S.;REEL/FRAME:027542/0445, SECURITY AGREEMENT;ASSIGNOR:GM GLOBAL TECHNOLOGY OPERATIONS LLC;REEL/FRAME:028458/0184, RELEASE BY SECURED PARTY;ASSIGNOR:WILMINGTON TRUST COMPANY;REEL/FRAME:034186/0776, PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551), For Electric Car Batteries, Managing Hot and Cold Is Just Right, Ford Uses Innovative Liquid-Cooled Battery System to Help Focus Electric Owners Maximize Range, Second Law Analysis of a Liquid Cooled Battery Thermal Management System for Hybrid and Electric Vehicles, Systems and methods for battery thermal management utilizing a vapor chamber, Traction battery thermal management systems and methods, COOLING SYSTEM OF AT LEAST ONE BATTERY OF A MOTOR VEHICLE, Cooling device for at least one motor vehicle battery, System for cooling at least one motor vehicle battery, Systems and methods for battery structure, interconnects, sensing, and balancing, Battery cell with integrated vapor chamber, Space fillers for electrochemical cell packs, Elevated temperature li/metal battery system, Traction battery assembly with thermal device, Composition for use as cooling fluid for heat-generating electrical, electronic and / or electrochemical devices with reduced creep behavior, Wetting-optimized composition for use as cooling fluid for heat-generating electrical, electronic and / or electrochemical devices, Battery module with a plurality of battery cells, Devices, systems, and methods for molten fluid electrode apparatus management, Devices, systems, and methods to mitigate thermal runaway conditions in molten fluid electrode apparatus, Molten fluid electrode apparatus with solid lithium iodide electrolyte having improved lithium ion transport characteristics, A method of protecting a large battery pack from thermal stresses, Process and apparatus for recovering components of sealed type battery, High temperature battery system for hybrid locomotive and offhighway vehicles, Thermally managed battery enclosure for electric and hybrid electric vehicles, Battery system with battery cells arranged in array alignment, HVAC and Battery Thermal Management for a Vehicle, Electrical Battery Comprising Flexible Generating Elements and a System for the Mechanical and Thermal Conditioning of Said Elements, Review on battery thermal management system for electric vehicles, Thermal management of Li-ion battery with liquid metal, Electric storage device and electric storage apparatus, Energy storage system with heat pipe heat treatment section, Battery cell assembly and method for manufacturing a cooling fin for the battery cell assembly, Battery module with cooling structure of high efficiency, Cooling mechanism for batteries using L-V phase change materials, Thermal management of lithiumâion batteries for electric vehicles, Battery System and Method for Cooling the Battery System, Frame for secondary battery and battery module comprising same, A critical review of battery thermal performance and liquid based battery thermal management, Cooling member having compact structure and excellent stability, and battery module having the same, Battery Module Having Excellent Heat Dissipation Ability and Battery Pack Employed with the Same, Middle or large-sized battery pack of improved cooling efficiency, Battery pack with improved safety against outflow of liquid refrigerant, An experimental study of heat pipe thermal management system with wet cooling method for lithium ion batteries, Thermal solution for prismatic lithium ion battery pack, Cooling device for battery cell and battery module comprising the same. MIVOLT, the range of dielectric liquids M&I Materials has engineered for the EV market, acts as an immersion coolant for both EV batteries and … Nonlimiting examples of known cooling systems for battery cells are described in Assignee's co-pending U.S. patent application Ser. Owner name: MIVOLT DF is a range of readily biodegradable dielectric fluids for the direct immersion cooling of EV battery systems and charging stations. The use of a liquid coolant has become attractive due to the higher heat transfer coefficient achieved as compared to air-cooling. Battery cells are dropped directly into dielectric fluids maintaining constant coolant to cell contact. The cooling system may have channels through which a coolant flows in a heat transfer relationship with the battery cells. The container 14 has an interior space 16. We are the premier manufacturer of SLIC Coolants! Each cooling module includes a battery assembly disposed within the interior space of the container and a plurality of battery cells having at least one fluid channel formed therebetween for receiving a fluid therein.