EP3820977A1 - Kühl- und flammschutzmittelzusammensetzung für ein antriebssystem eines elektrischen oder hybridfahrzeugs - Google Patents

Kühl- und flammschutzmittelzusammensetzung für ein antriebssystem eines elektrischen oder hybridfahrzeugs

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Publication number
EP3820977A1
EP3820977A1 EP19737543.9A EP19737543A EP3820977A1 EP 3820977 A1 EP3820977 A1 EP 3820977A1 EP 19737543 A EP19737543 A EP 19737543A EP 3820977 A1 EP3820977 A1 EP 3820977A1
Authority
EP
European Patent Office
Prior art keywords
composition
weight
composition according
battery
electric
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP19737543.9A
Other languages
English (en)
French (fr)
Inventor
Eric Lacroix
Philippe CHINA
Francis Rondelez
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TotalEnergies Onetech SAS
Original Assignee
Total Marketing Services SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Total Marketing Services SA filed Critical Total Marketing Services SA
Publication of EP3820977A1 publication Critical patent/EP3820977A1/de
Pending legal-status Critical Current

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    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M131/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing halogen
    • C10M131/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing halogen containing carbon, hydrogen and halogen only
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/08—Materials not undergoing a change of physical state when used
    • C09K5/10—Liquid materials
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C10M105/50—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing halogen
    • C10M105/52—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing halogen containing carbon, hydrogen and halogen only
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C10M105/50—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing halogen
    • C10M105/54—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing halogen containing carbon, hydrogen, halogen and oxygen
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C10M105/72—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing sulfur, selenium or tellurium
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C10M105/74—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing phosphorus
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
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    • C10M131/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing halogen
    • C10M131/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing halogen containing carbon, hydrogen and halogen only
    • C10M131/04—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing halogen containing carbon, hydrogen and halogen only aliphatic
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
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    • C10M131/08—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing halogen containing carbon, hydrogen, halogen and oxygen
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    • C10M131/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing halogen
    • C10M131/08—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing halogen containing carbon, hydrogen, halogen and oxygen
    • C10M131/10—Alcohols; Ethers; Aldehydes; Ketones
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    • C10M135/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium
    • C10M135/02—Sulfurised compounds
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    • C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
    • C10M137/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having no phosphorus-to-carbon bond
    • C10M137/04—Phosphate esters
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
    • C10M169/04—Mixtures of base-materials and additives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
    • C09K2205/10—Components
    • C09K2205/11—Ethers
    • C09K2205/112—Halogenated ethers
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/028—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms
    • C10M2205/0285—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28—Esters
    • C10M2207/2805—Esters used as base material
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    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/1033—Polyethers, i.e. containing di- or higher polyoxyalkylene groups used as base material
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    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2211/00—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2211/02—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen and halogen only
    • C10M2211/022—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen and halogen only aliphatic
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2211/00—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2211/02—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen and halogen only
    • C10M2211/022—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen and halogen only aliphatic
    • C10M2211/0225—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen and halogen only aliphatic used as base material
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    • C10M2211/00—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2211/04—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen, halogen, and oxygen
    • C10M2211/042—Alcohols; Ethers; Aldehydes; Ketones
    • C—CHEMISTRY; METALLURGY
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    • C10M2211/00—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2211/04—Organic non-macromolecular compounds containing halogen as ingredients in lubricant compositions containing carbon, hydrogen, halogen, and oxygen
    • C10M2211/042—Alcohols; Ethers; Aldehydes; Ketones
    • C10M2211/0425—Alcohols; Ethers; Aldehydes; Ketones used as base material
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    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
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    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
    • C10M2219/082—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
    • C10M2219/082—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms
    • C10M2219/083—Dibenzyl sulfide
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C10M2223/0405—Phosphate esters used as base material
    • C—CHEMISTRY; METALLURGY
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    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/01—Physico-chemical properties
    • C10N2020/02—Viscosity; Viscosity index
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    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
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    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/08—Resistance to extreme temperature
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    • C10N2040/00—Specified use or application for which the lubricating composition is intended
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    • C10N2040/14—Electric or magnetic purposes
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    • C10N2040/16—Dielectric; Insulating oil or insulators
    • Y—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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the present invention relates to the field of lubricating compositions for a propulsion system of an electric or hybrid vehicle. It thus aims to propose a composition endowed with both lubrication properties with respect to the transmission of the propulsion system, cooling of the power electronics and of the battery, and of the two properties combined with respect to engine screw in a propulsion system of an electric or hybrid vehicle.
  • the composition also has properties of resistance to ignition, which is useful for batteries.
  • the present invention aims in particular to propose a means of cooling the batteries of electric or hybrid vehicles via a fluid which can cool but also delay and / or avoid the propagation of fire.
  • electric vehicle within the meaning of the present invention, is meant a vehicle comprising an electric motor as the sole means of propulsion unlike a hybrid vehicle which comprises a combustion engine and an electric motor as the combined propulsion means.
  • propulsion system within the meaning of the present invention means a system comprising the mechanical parts necessary for the propulsion of an electric vehicle.
  • the propulsion system thus more particularly includes an electric motor comprising the rotor-stator assembly, power electronics (dedicated to speed regulation), a transmission and a battery.
  • compositions In general, it is necessary to use, in electric or hybrid vehicles, compositions to meet the lubrication and / or cooling constraint of the different parts of the propulsion system mentioned above.
  • the lubricating composition plays a role both of lubrication and of cooling.
  • the composition allows cooling.
  • the transmission is lubricated by the composition and finally the batteries are cooled by said composition.
  • the lubricant composition according to the invention while ensuring the cooling of the battery, guarantees the safety of the batteries.
  • composition according to the invention thus plays the multiple role of cooling, lubrication and resistance to ignition.
  • Lubricating compositions also called “lubricants” are commonly used in propulsion systems such as electric motors for the main purpose of reducing the frictional forces between the various metal parts moving in the motors. They are also effective in preventing premature wear or even damage to these parts, and in particular their surface.
  • a lubricating composition is conventionally composed of one or more base oils, with which are generally associated several additives dedicated to stimulating the lubricating performance of the base oils, such as for example friction modifying additives.
  • electric propulsion systems generate heat during their operation via the electric motor, power electronics and batteries. Since the amount of heat generated is greater than the amount of heat normally dissipated to the environment, it is necessary to ensure cooling of the engine, power electronics and batteries. In general, cooling takes place on several parts of the propulsion system generating heat and / or the parts of said system sensitive to heat, in order to avoid reaching dangerous temperatures, and in particular power electronics. and batteries.
  • Flame retardants are also known which can be used in fluids, including oily, in particular for industrial applications.
  • some almost non-flammable oils are generally composed of heavy halogens such as polychlorotrifluoroethylenes (PCTFE).
  • PCTFE polychlorotrifluoroethylenes
  • certain perfluorinated organic fluids of ether or ketone type are also known as cooling fluid for the propulsion system of electric vehicles.
  • halogenated compounds are very expensive and their use is not preferred for regulatory and environmental reasons.
  • these halogenated compounds have a high density which add to the mass of the battery and which would ultimately have the effect of reducing the range of the vehicle.
  • the present invention aims precisely to propose a new composition making it possible to simultaneously satisfy the lubrication and the cooling of the elements of the above-mentioned propulsion system on the one hand, as well as on the other hand ensuring the safety of the batteries, in particular the lithium batteries.
  • -ion Li-ion
  • Ni-Cd Nickel-Cadmium
  • the inventors have discovered that it is possible to provide the multiple function of lubrication, cooling, as well as ignition resistance for a propulsion system of an electric or hybrid vehicle, by implementing at minus a flame retardant, and more particularly a fluorinated flame retardant of formula (I) as defined below, in a base oil.
  • composition thus formed can be brought into direct contact with the propulsion system and cool the engine, the power electronics and the battery by means of this direct contact of said composition on these organs, while ensuring increased safety in the event of runaway of said battery.
  • composition thus in direct contact with these members provides better cooling than conventional air cooling and in indirect contact with water.
  • This direct contact allows better heat dissipation.
  • air cooling allows direct cooling but air is a very bad heat dissipation fluid.
  • water is a powerful fluid for cooling but is not compatible with direct contact with the engine, power electronics and the battery.
  • the present invention relates, according to a first of its aspects, to a lubrication composition of a propulsion system of an electric or hybrid vehicle comprising at least one base oil and at least one flame retardant corresponding to the formula ( I)
  • R F is a perfluorinated or partially fluorinated group, in particular comprising from 1 to 22, preferably from 1 to 20, even more preferably from 1 to 16 carbon atoms,
  • R H is a hydrocarbon group, in particular comprising from 1 to 22, preferably from 1 to 20, even more preferably from 1 to 16 carbon atoms, and
  • L is a linker
  • the present invention also relates to the use of at least one flame retardant corresponding to formula (I)
  • R F is a perfluorinated or partially fluorinated group, in particular comprising from 1 to 22, preferably from 1 to 20, even more preferably from 1 to 16 carbon atoms,
  • R H is a hydrocarbon group, in particular comprising from 1 to 22, preferably from 1 to 20, even more preferably from 1 to 16 carbon atoms, and
  • L is a linker
  • a lubrication composition for a propulsion system of an electric or hybrid vehicle comprising at least one battery, to give it properties of resistance to ignition.
  • the lubricant composition is intended to be brought into direct contact with the batteries of electric vehicles, in particular Li-ion batteries or Ni-Cd batteries, which are in particular in immersion or semi-immersion, static or in circulation, in said additive lubricating composition, or composition according to the invention, or else directly sprayed in the form of a spray, jet or oil mist.
  • the batteries of electric vehicles in particular Li-ion batteries or Ni-Cd batteries, which are in particular in immersion or semi-immersion, static or in circulation, in said additive lubricating composition, or composition according to the invention, or else directly sprayed in the form of a spray, jet or oil mist.
  • Fluorinated compounds and in particular in the form of diblock fluorinated compounds are described in document WO 97/21425. However, these fluorinated compounds are described as dispersing agents making it possible to control the bioavailability and the effectiveness of lipophilic compounds, in emulsions. No application in accordance with the present invention is described or suggested therein.
  • a composition according to the invention makes it possible to effectively cool the battery, the power electronics and the engine present in an electric or hybrid vehicle.
  • composition according to the invention makes it possible to delay or avoid thermal runaway, or even the spread of fire in the event of inflammation of one of the battery cells.
  • a composition according to the invention also makes it possible to provide lubrication of the propulsion system of an electric or hybrid vehicle, and more particularly the electric motor itself and the transmission.
  • composition according to the invention makes it possible to ensure the lubrication of the transmission, in particular the reduction gear, of an electric or hydride vehicle.
  • this unique composition according to the invention makes it possible to ensure both the cooling of the engine, the power electronics and the battery and its securing to fire, by delaying and / or preventing the spread of fire, by particularly in the event of an explosion and / or a flashover of the battery, in particular a Li-ion or Ni-Cd battery, as well as the lubrication of the electric motor, of the transmission, in particular the reduction gear, in an electric or hybrid vehicle .
  • the invention also relates to a method of cooling and fireproofing a battery of a propulsion system of an electric or hybrid vehicle, comprising at least one step of bringing at least one battery into contact, in particular a Lithium-ion or Nickel-Cadmium battery, with a composition according to the invention.
  • a method of cooling and fireproofing a battery of a propulsion system of an electric or hybrid vehicle comprising at least one step of bringing at least one battery into contact, in particular a Lithium-ion or Nickel-Cadmium battery, with a composition according to the invention.
  • flame retardant suitable for “fire safety”, “flame retardant”, “delaying and / or preventing the spread of fire” or “resistant to fire” may be used interchangeably. 'inflammation'. All these terms qualify the compounds having the capacity to secure an object in the face of the occurrence of an explosion or a conflagration, in particular following an overheating.
  • Figure 1 is a schematic representation of an electric or hybrid propulsion system.
  • composition according to the invention comprises at least one base oil or fluid base as explained below, and a flame retardant corresponding to formula (I), defined in detail below.
  • a composition according to the invention has a kinematic viscosity, measured at 100 ° C. according to standard ASTM D445, of between 2 and 8 mm 2 / s, preferably between 3 and 7 mm 2 / s.
  • a composition according to the invention uses at least one base oil, in particular a fluid base formed from at least one base oil having a kinematic viscosity, measured at 100 ° C. according to standard ASTM D445, ranging from 1, 5 to 8 mm 2 / s, in particular from 1.5 to 6.1 mm 2 / s, more particularly from 1.5 to 4.1 mm 2 / s, even more particularly from 1.5 to 2.1 mm 2 / s.
  • This base oil can be a mixture of several base oils, namely a mixture of 2, 3 or 4 base oils.
  • fluid base will denote the oil or mixture of base oils, having a kinematic viscosity measured at 100 ° C. according to standard ASTM D445 ranging from 1.5 to 8 mm 2 / s.
  • the base oil used in a lubricating composition according to the invention can be chosen from oils of mineral or synthetic origins belonging to groups I to V according to the classes defined in the API classification (or their equivalents according to the ATIEL classification) and presented in Table A below or their mixtures, provided that the oil or mixture of oils has the desired viscosity mentioned above.
  • Mineral base oils include all types of base oils obtained by atmospheric distillation and under vacuum of crude oil, followed by refining operations such as solvent extraction, dealpumping, solvent dewaxing, hydrotreating, hydrocracking, hydroisomerization and hydrofinishing . Mixtures of synthetic and mineral oils, which can be bio-sourced, can also be used.
  • the base oil or oils of a composition according to the invention are hydrocarbon oils, preferably are alkanes.
  • the base oil or oils can be chosen from alkanes comprising at least 8 carbon atoms, for example between 8 and 22 carbon atoms, preferably between 15 and 22 carbon atoms.
  • it can be alkanes in CVC22, preferably in C15-C22.
  • the base oils of the compositions according to the invention can also be chosen from synthetic oils, such as certain esters of carboxylic acids and alcohols, from polyalphales (PAO), and from polyalkylene glycol (PAG) obtained by polymerization or copolymerization of alkylene oxides comprising from 2 to 8 carbon atoms, in particular from 2 to 4 carbon atoms.
  • synthetic oils such as certain esters of carboxylic acids and alcohols, from polyalphales (PAO), and from polyalkylene glycol (PAG) obtained by polymerization or copolymerization of alkylene oxides comprising from 2 to 8 carbon atoms, in particular from 2 to 4 carbon atoms.
  • the PAOs used as base oils are for example obtained from monomers comprising from 4 to 32 carbon atoms, for example from octene or decene.
  • the weight average molecular weight of PAO can vary quite widely. Preferably, the weight average molecular weight of the PAO is less than 600 Da. The weight average molecular weight of the PAO can also range from 100 to 600 Da, from 150 to 600 Da, or even from 200 to 600 Da.
  • the PAOs implemented in the context of the invention having a kinematic viscosity, measured at 100 ° C. according to standard ASTM D445, ranging from 1.5 to 8 mm 2 / s are sold commercially by Ineos under the Durasyn ® 162, Durasyn ® 164, Durasyn ® 166 and Durasyn ® 168 brands.
  • the esters of carboxylic acids and of alcohols are, for example, diesters of formula (II):
  • - R represent, independently of each other, a hydrogen atom or a (Cl-C5) alkyl group, linear or branched, in particular a methyl, ethyl or propyl group, in particular methyl;
  • - s is 1, 2, 3, 4, 5 or 6;
  • - n is 1, 2 or 3; it being understood that, when s is different from 1, n may be the same or different;
  • R a and R b identical or different, represent, independently of one another, hydrocarbon groups, saturated or unsaturated, linear or branched, having a linear chain of 6 to 18 carbon atoms.
  • At least one of the group R represents a (Ci-Cs) alkyl group, linear or branched; and when s is 1 and n is 3, at least one of the groups R linked to the carbon in beta position of the oxygen atoms of the ester functions represents a hydrogen atom.
  • oil or base oils of the composition according to the invention are chosen from polyalphaolefins (PAO).
  • a composition according to the invention comprises a fluid base formed from one or more base oils having a kinematic viscosity measured at 100 ° C. according to standard ASTM D445 of between 1.5 and 8 mm 2 / s.
  • a composition according to the invention may be free of base oil or mixture of base oils not meeting the criterion of kinematic viscosity measured at 100 ° C. according to standard ASTM D445, in particular free of oil or mixture of base oils with a viscosity greater than 9 mm3 ⁇ 4.
  • the base oil can be chosen from alkanes comprising at least 8 carbon atoms, for example between 8 and 22 carbon atoms, preferably between 15 and 22 carbon atoms or from synthetic oils of ester type d 'carboxylic acids and alcohols, polyalphao lé fines (PAO), or polyalkylene glycol (PAG) obtained by polymerization or copolymerization of alkylene oxides comprising from 2 to 8 carbon atoms, in particular from 2 to 4 carbon atoms.
  • alkanes comprising at least 8 carbon atoms, for example between 8 and 22 carbon atoms, preferably between 15 and 22 carbon atoms or from synthetic oils of ester type d 'carboxylic acids and alcohols, polyalphao lé fines (PAO), or polyalkylene glycol (PAG) obtained by polymerization or copolymerization of alkylene oxides comprising from 2 to 8 carbon atoms, in particular from 2 to 4 carbon atoms.
  • PAO polyalpha
  • the fluid base provides the lubricating and cooling potential of the composition according to the invention.
  • the fluidity of the base in particular ensures good cooling properties during the implementation of the composition in contact with the batteries of a propulsion system of an electric or hydride vehicle.
  • the cooling properties of the composition are further advantageously increased by the shear applied to the composition at the injection level which brings the fluid to a lower viscosity level than at rest.
  • a composition according to the invention comprises from 60% to 99.5% by weight, preferably from 70% to 98% by weight, for example from 80% to 99.5% by weight, even more preferably from 80 % to 98% by weight, advantageously from 90% to 97% by weight of base oil, or mixture of base oils, having a kinematic viscosity measured at 100 ° C. according to standard ASTM D445 ranging from 1.5 to 8 mm 2 / s, relative to the total weight of the composition.
  • At least one flame retardant is incorporated into the lubricating composition of a propulsion system of an electric or hybrid vehicle, corresponding to formula (I)
  • R F is a perfluorinated or partially fluorinated group
  • R H is a hydrocarbon group
  • L is a linker
  • the term “partially fluorinated group” means that at least 60% of the hydrogen atoms in the group concerned have been replaced by fluorine atoms, for example between 60 and 80%.
  • the presence of at least one flame retardant of formula (I) is capable of forming micelles in the lubricating composition. In the event of heating likely to be caused by a fire, the micelles will be present on the surface of the composition, making it possible to fight against the fire.
  • the group R F has between 1 and 22, preferably between 1 and 20, more particularly between 1 and 16 carbon atoms.
  • Said group can optionally be interrupted by 1 to 4 heteroatoms chosen from a nitrogen atom and an oxygen atom.
  • This group can also be linear or branched.
  • it is a (Ci-Ci 6 ) alkyl perfluorinated or partially fluorinated, optionally interrupted by one or two heteroatoms chosen from a nitrogen atom and an oxygen atom.
  • Such a group R F can for example be chosen from the following groups:
  • n being an integer which can be between 1 and 15, m being an integer between 0 and 14.
  • the group R H has between 1 and 22 carbon atoms, preferably between 1 and 20, even more preferably between 1 and 16 carbon atoms. According to a particular embodiment, this group R H can comprise between 1 and 4 heteroatoms chosen from a nitrogen atom and an oxygen atom. This group can also be linear or branched. It can moreover be saturated or comprise from 1 to 4 unsaturations.
  • the group R H may preferably contain between 3 and 22 carbon atoms, more preferably between 3 and 18, for example between 5 and 15, or even between 10 and 15 carbon atoms.
  • it is a (Ci-Cis) alkyl group, in particular fC 3 - C 1 5) al kylc), or (C 2 -Ci5) alkenyl, said group being optionally substituted by a hydrocarbon ring such as the group (C3-C6) cycloalkyl, phenyl or benzyl.
  • Such a group R H can in particular be chosen from the following groups, without however being limited thereto:
  • n being an integer which can be between 1 and 21, for example between 2 and 21, in particular between 7 and 21, p being between 1 and 16, in particular between 2 and 10, q and r being independently between 1 and 16, with q + r being less than or equal to 21 and advantageously greater than 7, s and t being independently between 1 and 16, with s + t being less than or equal to 19 and advantageously greater than 5.
  • the flame retardant of formula (I) as defined above may be in the form of a mixture of flame retardants of formula (I) as defined above.
  • (Ci-C x ) alkyl refers to a saturated hydrocarbon chain containing from 1 to x carbon atoms, linear or branched, for example a (Ci-Ci 2 ) alkyl group.
  • a saturated hydrocarbon chain containing from 1 to x carbon atoms linear or branched, for example a (Ci-Ci 2 ) alkyl group.
  • Non-limiting examples that may be mentioned include the following groups: methyl, ethyl, 1-propyl, 2-propyl, butyl, pentyl, hexyl, heptyl, and decyl,
  • (C 2 -C x ) alkenyl refers to a hydrocarbon chain having unsaturations and comprising from 2 to x carbon atoms, linear or branched, for example a (C 2 -Ci2) alkyl group.
  • the following groups may be mentioned: ethylene, propylene, butylene, pentylene, hexylene and decylene
  • (C3-C6) cycloalkyle to a saturated and cyclic hydrocarbon chain.
  • the following groups may be mentioned: cyclopropyl, cyclobutyl, cyclopentyl and cyclohexyl.
  • the flame retardant (s) of formula (I) can be present in a content of between 0.5% and 40% by weight, relative to the total weight of the composition according to the present invention, in particular in a content of between 2% and 30% by weight, even more particularly in a content of between 2% and 20% by weight, advantageously between 3% and 10% by weight.
  • the lubricant composition in accordance with the invention may also comprise at least one radical inhibitor.
  • radical inhibitors are known per se to those skilled in the art and can have different chemical natures and in particular belong to different chemical families.
  • radical inhibitors mention may in particular be made of phosphorus radical inhibitors.
  • the compounds for which the phosphorus is a P (V) or pentavalent phosphorus and the compounds for which the phosphorus is a P (III) or trivalent phosphorus.
  • P (V) the compounds which are in the form of a pentavalent phosphorus
  • fluorinated alkylphosphate of tris (2,2,2-trifluoroethyl) phosphate.
  • arylphosphates of triphenylphosphate, tricresylphosphate or trixylenylphosphate.
  • the lubricating composition in accordance with the invention may also comprise at least one additional flame retardant, different from the flame retardant of formula (I) defined above.
  • composition according to the invention may also comprise one or more additives as defined more precisely in the following text.
  • additives as defined more precisely in the following text.
  • the lubricant composition according to the present invention further comprises additives modulating the properties of the base oil.
  • the additives which can be incorporated into a composition according to the invention can be chosen from friction modifiers, detergents, anti-wear additives, extreme pressure additives, dispersants, antioxidants, pour point improvers, defoamers and their mixtures.
  • additives can be introduced in isolation and / or in the form of a mixture, like those already available for sale for formulations of commercial lubricants for vehicle engines, with performance levels as defined by ACEA ( Association of European Automobile Manufacturers) and / or API (American Petroleum Institute), well known to those skilled in the art.
  • ACEA Association of European Automobile Manufacturers
  • API American Petroleum Institute
  • Anti-wear additives and extreme pressure additives protect friction surfaces by forming a protective film adsorbed on these surfaces.
  • the antiwear additives are chosen from phosphosulfur additives such as metal alkylthiophosphates, in particular zinc alkylthiophosphates, and more specifically zinc dialkyldithiophosphates or ZnDTP.
  • phosphosulfur additives such as metal alkylthiophosphates, in particular zinc alkylthiophosphates, and more specifically zinc dialkyldithiophosphates or ZnDTP.
  • the preferred compounds are of formula Zn ((SP (S) (OR 2 ) (OR 3 )) 2 , in which R 2 and R 3 , identical or different, independently represent an alkyl group, preferably an alkyl group comprising from 1 to 18 carbon atoms.
  • Amine phosphates are also anti-wear additives which can be used in a composition according to the invention.
  • the phosphorus provided by these additives can act as poison in the catalytic systems of automobiles because these additives generate ash.
  • These effects can be minimized by partially replacing the amine phosphates with additives which do not provide phosphorus, such as, for example, polysulphides, in particular sulfur-containing olefins.
  • a lubricating composition according to the invention may comprise from 0.01 to 6% by weight, preferably from 0.05 to 4% by weight, more preferably from 0.1 to 2% of anti-wear additives and of extreme additives pressure, by mass relative to the total weight of composition.
  • a lubricating composition according to the invention is free from antiwear additives and extreme pressure additives.
  • a lubricating composition according to the invention is advantageously free of phosphate additives.
  • a lubricant composition according to the invention can comprise at least one friction-modifying additive.
  • the friction-modifying additive can be chosen from a compound providing metallic elements and an ash-free compound.
  • the compounds providing metallic elements mention may be made of complexes of transition metals such as Mo, Sb, Sn, Fe, Cu, Zn, the ligands of which may be hydrocarbon compounds comprising oxygen, nitrogen, sulfur or phosphorus.
  • the ash-free friction modifying additives are generally of organic origin and can be chosen from monoesters of fatty acids and of polyols, alkoxylated amines, alkoxylated fatty amines, fatty epoxides, fatty borate epoxides; fatty amines or fatty acid glycerol esters.
  • the fatty compounds comprise at least one hydrocarbon group comprising from 10 to 24 carbon atoms.
  • a lubricating composition according to the invention may comprise from 0.01 to 2% by weight or from 0.01 to 5% by weight, preferably from 0.1 to 1.5% by weight or from 0.1 to 2% by weight. weight of friction-modifying additive, relative to the total weight of the composition.
  • a lubricating composition according to the invention is free from friction-modifying additive.
  • a lubricant composition according to the invention can comprise at least one antioxidant additive.
  • the antioxidant additive generally makes it possible to delay the degradation of the composition in service. This degradation can in particular result in the formation of deposits, in the presence of sludge or in an increase in the viscosity of the composition.
  • the antioxidant additives act in particular as radical inhibitors or destroyers of hydroperoxides.
  • antioxidant additives commonly used there may be mentioned antioxidant additives of the phenolic type, antioxidant additives of the amino type, phosphosulfurized antioxidant additives. Some of these antioxidant additives, for example phosphosulfur antioxidant additives, can generate ash.
  • the phenolic antioxidant additives may be ash-free or may be in the form of neutral or basic metal salts.
  • the antioxidant additives can in particular be chosen from sterically hindered phenols, sterically hindered phenol esters and sterically hindered phenols comprising a thioether bridge, dipheny lamines, diphenylamines substituted by at least one C 1 -C 2 alkyl group, N , N'-dialkyl-aryl-diamines and mixtures thereof.
  • the sterically hindered phenols are chosen from the compounds comprising a phenol group in which at least one vicinal carbon of the carbon carrying the alcohol function is substituted by at least one C 1 -C 10 alkyl group, preferably an alkyl group. in C 1 -C 6 , preferably a C 4 alkyl group, preferably by the tert-butyl group.
  • Amino compounds are another class of antioxidant additives that can be used, possibly in combination with phenolic antioxidant additives.
  • Examples of amino compounds are the aromatic amines, for example the aromatic amines of formula NR 4 R 5 R 6 in which R 4 represents an aliphatic group or an aromatic group, optionally substituted, R 5 represents an aromatic group, optionally substituted, R 6 represents a hydrogen atom, an alkyl group, an aryl group or a group of formula R 7 S (0) z R 8 in which R 7 represents an alkylene group or an alkenylene group, R 8 represents an alkyl group, a alkenyl group or an aryl group and z represents 0, 1 or 2.
  • Sulfurized alkyl phenols or their alkali and alkaline earth metal salts can also be used as antioxidant additives.
  • antioxidant additives are that of copper-containing compounds, for example copper thio- or dithiophosphates, copper and carboxylic acid salts, dithiocarbamates, sulphonates, phenates, acetylacetonates of copper. Copper salts I and II, salts of succinic acid or anhydride can also be used.
  • a lubricant composition according to the invention can contain all types of antioxidant additives known to those skilled in the art.
  • a lubricating composition according to the invention comprises at least one antioxidant additive free from ash.
  • a lubricant composition according to the invention can comprise from 0.5 to 2% by weight of at least one antioxidant additive, relative to the total weight of the composition.
  • a lubricant composition according to the invention can also comprise at least one detergent additive.
  • Detergent additives generally reduce the formation of deposits on the surface of metal parts by dissolving secondary oxidation and combustion products.
  • the detergent additives which can be used in a lubricating composition according to the invention are generally known to those skilled in the art.
  • the detergent additives can be anionic compounds comprising a long lipophilic hydrocarbon chain and a hydrophilic head.
  • the associated cation can be a metal cation of an alkali or alkaline-earth metal.
  • the detergent additives are preferably chosen from alkali or alkaline-earth metal salts of carboxylic acids, sulfonates, salicylates, naphthenates, as well as phenate salts.
  • the alkali and alkaline earth metals are preferably calcium, magnesium, sodium or barium.
  • metal salts generally comprise the metal in a stoichiometric amount or else in excess, therefore in an amount greater than the stoichiometric amount.
  • overbased detergent additives the excess metal bringing the overbased character to the detergent additive is then generally in the form of a metal salt insoluble in the oil, for example a carbonate, a hydroxide, an oxalate, an acetate, a glutamate, preferably a carbonate .
  • a lubricant composition according to the invention may for example comprise from 2 to 4% by weight of detergent additive, relative to the total weight of the composition.
  • a lubricant composition according to the invention can also comprise at least one pour point lowering additive.
  • pour point lowering additives By slowing the formation of paraffin crystals, pour point lowering additives generally improve the cold behavior of the composition.
  • pour point lowering additives examples include alkyl polymethacrylates, polyacrylates, polyarylamides, polyalkylphenols, polyalkylnaphthalenes, alkylated polystyrenes.
  • a lubricant composition according to the invention can comprise at least one dispersing agent.
  • the dispersing agent can be chosen from Mannich bases, succinimides and their derivatives.
  • a lubricating composition according to the invention may for example comprise from 0.2 to 10% by weight of dispersing agent, relative to the total weight of the composition.
  • water is not compatible with direct contact with an electric or hybrid vehicle propulsion system, such as the engine, power electronics and battery.
  • a composition according to the invention is preferably free of water.
  • free of water within the meaning of the present invention is meant that the composition comprises less than 1% by weight of water, preferably less than 0.1% by weight, does not comprise water.
  • composition according to the invention comprises, or even consists of:
  • R F is a (C2-Ci 2 ) perfluorinated or partially fluorinated alkyl group
  • R H is a (C 6 -Ci 2 ) alkyl, (C 6 -Ci 2 ) alkenyl group, said group being optionally substituted with a (C3-C6) cycloalkyl, phenyl or benzyl, and said group possibly being interrupted by 1 or 2 heteroatoms chosen from nitrogen or oxygen
  • additives chosen from phosphorus radical inhibitors, friction modifiers, detergents, anti-wear additives, extreme pressure additives, dispersants, antioxidants, pour point improvers, defoamers and their mixtures, the contents being expressed relative to the total weight of the composition.
  • a composition according to the invention can be used, by virtue of its joint properties in terms of lubrication, cooling and fire retardant, both as a lubricating fluid for the engine and the transmission, for cooling for a propulsion system of an electric or hybrid vehicle, and more particularly of the engine, power electronics and batteries, and as a fluid delaying and / or preventing the propagation of fire for the batteries.
  • the composition according to the invention is brought into contact with the battery, by immersion or semi-immersion.
  • the lubricating composition plays the dual role of cooling and fire protection vis-à-vis the battery.
  • the lubricant composition according to the invention is advantageously brought into direct contact with the batteries by methods described below.
  • Li-ion batteries or even Nickel-Cadmium batteries are examples of Li-ion batteries or even Nickel-Cadmium batteries.
  • the invention relates to the use of a composition as defined above for lubricating, cooling and securing a propulsion system of an electric or hybrid vehicle.
  • An electric motor is typically powered by an electric battery (2).
  • Lithium-ion batteries are the most widespread in the field of electric vehicles. The development of more and more powerful and smaller and smaller batteries implies the appearance of the problem of cooling of this battery. In fact, as soon as the battery exceeds temperatures of the order of 50 to 60 ° C., there is a high risk of ignition, or even explosion, of the battery. There is also a need to maintain the battery at a temperature above about 0 ° C to allow optimum operation of the battery.
  • a composition of the invention can thus be used to cool the battery of an electric or hybrid vehicle and to delay and / or prevent the spread of fire.
  • the propulsion system of an electric or hybrid vehicle includes in particular the electric motor part (1).
  • This typically includes power electronics (11) connected to a stator (13) and a rotor (14).
  • the stator comprises coils, in particular copper coils, which are supplied alternately by an electric current. This generates a rotating magnetic field.
  • the rotor itself includes coils, permanent magnets or other magnetic materials, and is rotated by the rotating magnetic field.
  • the power electronics (11), the stator (13) and the rotor (14) of a propulsion system (1) are parts whose structure is complex and generates a large amount of heat during engine operation. . It is therefore imperative to ensure cooling of the electric motor, and the power electronics.
  • the bearing (12) generally integrated between the stator (13) and the rotor (14), is subjected to high mechanical stresses and poses fatigue wear problems. It is therefore necessary to lubricate the bearing in order to increase its service life.
  • composition according to the invention makes it possible to provide, in an electric or hybrid vehicle, in addition to the cooling function and the fire protection function of the battery, the lubrication and organ protection function. in contact against wear and cooling of the motor and power electronics.
  • a propulsion system of an electric or hybrid vehicle also comprises a transmission, and in particular a speed reducer (3) which makes it possible to reduce the speed of rotation at the outlet of the electric motor and to adapt the speed transmitted to the wheels, allowing at the same time to control the speed of the vehicle.
  • This gearbox is subjected to high friction stresses and therefore needs to be lubricated appropriately in order to prevent it from being damaged too quickly.
  • a composition as described above makes it possible to lubricate the transmission, in particular the reducer, in an electric or hybrid vehicle.
  • the invention relates to the use of a composition as described above for cooling the battery, the engine, and the power electronics to lubricate the engine and the transmission and to secure a fire propulsion system against fire.
  • a composition as described above for cooling the battery, the engine, and the power electronics to lubricate the engine and the transmission and to secure a fire propulsion system against fire.
  • an electric or hybrid vehicle, and in particular the battery for cooling the battery, the engine, and the power electronics to lubricate the engine and the transmission and to secure a fire propulsion system against fire.
  • an electric or hybrid vehicle and in particular the battery.
  • such a composition makes it possible to cool the power electronics and / or the rotor and / or the stator of the electric motor. It can also provide lubrication for the bearings located between the rotor and the stator of an electric motor of an electric or hybrid vehicle.
  • the invention has the advantage of allowing the implementation of a single composition combining the cooling and flame retardant or flame retardant properties, as a coolant and fire protection of a battery in a electric or hybrid vehicle, while ensuring a lubrication and cooling function of the propulsion system of an electric or hybrid vehicle as a whole.
  • the invention also relates to a method of cooling and fireproofing a battery of a propulsion system of an electric or hybrid vehicle comprising at least one step of bringing at least one battery, in particular a battery Lithium-ion or Nickel-Cadmium, with a composition as defined above.
  • the contacting step consists in immersing or semi-immersing the battery in said composition or even in injecting said composition on the surface of the battery.
  • Cooling with a lubricant composition according to the invention can be implemented by any method known to those skilled in the art.
  • the battery can be immersed or semi-immersed, static or in circulation, in said composition.
  • direct contact mention may be made of cooling by injection, jet, spraying or even by forming a mist from the composition according to the invention under pressure and by gravity on the battery.
  • the composition is injected by jet under fairly high pressure into the areas to be cooled of the propulsion system.
  • the shear resulting from this injection makes it possible to reduce the viscosity of the fluid at the level of the injection zone, relative to the kinematic viscosity at rest, and thus, to further increase the cooling potential of the composition.
  • oil circulation systems commonly used in electric motors can be used, as for example described in document WO 2015/116496.

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EP19737543.9A 2018-07-13 2019-07-10 Kühl- und flammschutzmittelzusammensetzung für ein antriebssystem eines elektrischen oder hybridfahrzeugs Pending EP3820977A1 (de)

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FR1856470A FR3083800B1 (fr) 2018-07-13 2018-07-13 Composition refroidissante et ignifugeante pour systeme de propulsion d'un vehicule electrique ou hybride
PCT/EP2019/068617 WO2020011889A1 (fr) 2018-07-13 2019-07-10 Composition de lubrification refroidissante et ignifugeante pour systeme de propulsion d'un vehicule electrique ou hybride

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FR3083800B1 (fr) 2020-12-25
MX2021000451A (es) 2021-05-27
CN112673081A (zh) 2021-04-16
KR20210104641A (ko) 2021-08-25
FR3083800A1 (fr) 2020-01-17
US20210277322A1 (en) 2021-09-09
JP2021524529A (ja) 2021-09-13
US11591538B2 (en) 2023-02-28
WO2020011889A1 (fr) 2020-01-16

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