Abstract: A battery includes at least one battery cell (10, 10?), the cell including in a housing structure at least one slave cell management unit (BMS), and at least one communication unit (14) for wireless communication of data or parameter or measurement signals with a communication unit (24) of a master battery management unit (20). The cell includes combined means in a portion of a wall of the cell housing structure or forming part of an externally or internally configured plate disposed on a wall facing the cell communication unit (14) for enhancing or promoting good reception of radio frequency signals with the master battery management unit (20).

Abstract: A method for producing a cathode (1) for a battery cell, including: pre-treating a cathode active material (4) with a first covalent linker; reacting the pre-treated active material with a monomer in the presence of a solvent, thereby obtaining a cathode mixture; pre-treating a cathode current collector (2) with a second covalent linker; applying the cathode mixture to the pre-treated cathode current collector; heating the pre-treated cathode current to a temperature between 50° C. and 150° C. to remove the solvent and polymerize the monomer into an electronically conductive redox polymer (5), thereby obtaining the cathode (1); wherein the polymer (5) is covalently bonded to the cathode active material (4) and to the cathode current collector (2) through the first (6) and the second (7) covalent linker, respectively. Also a cathode (1) including a coated cathode current collector (2) and a battery cell including the cathode (1).

Abstract: A method for machining ribs or grooves on a workpiece including a shaft (7) and an air or gas axial bearing (24) attached to the shaft or forming a part of the shaft. The workpiece is rotated about a longitudinal axis of a centrifugal compressor. All of the ribs or grooves are obtained at once by the machining tool on a workpiece portion driven such that it rotates, by moving the workpiece or the tool holder in a longitudinal direction, the machining tool moving back and forth with a machining position in contact with the workpiece and a position wherein it is not in contact with the workpiece from the beginning to the end of the workpiece portion. Reciprocating motions of the machining tool are synchronised with the sinusoidal program, as well as with the desired, programmed arrangement of the ribs or grooves to be produced on the workpiece portion.

Abstract: A method for machining ribs or grooves on a shaft (7) with an axial bearing (24) forming part of the shaft. The ribs or grooves (32, 24a) are obtained on a workpiece portion of the shaft and of the axial bearing, by moving the shaft or at least one tool holder fitted with a machining tool in a longitudinal direction of machining, by the tool performing reciprocating motions with a position in contact and with a position not in contact with the shaft or the axial bearing from the beginning to the end of the workpiece portion or face. The reciprocating motions are synchronised with the sinusoidal programming carried out in the machining unit, along with the desired and programmed arrangement of the ribs or grooves to be produced.

Abstract: The present invention discloses a method for producing a particulate material for a composite electrode comprising ball milling of: an electrode active component comprising a transition metal M having a pristine oxidation state of 5+ and optionally 4+ and/or 3+; at least one second additional oxide selected from the group consisting of Li, Al, Cu, Fe, Cr, Mn, Sn, Mo, Ni, Sn, Ag, Ru or Ti and; a first lithium-comprising sulphide compound comprising an element X, X being P, Ge, Si or Sn, wherein an electronically conductive component is added to the electrode active component and the first lithium-comprising sulphide compound, thereby obtaining the particulate material. The present invention further discloses a particulate material obtained by the method, a composite cathode comprising the particulate material and a battery cell comprising the composite cathode.

Abstract: A lithium metal anode protective layer (a single layer or multi layers) including one or more selected from the group consisting of a halide of lithium, such as lithium iodide and lithium fluoride, a lithium metal anode including an anode active layer including lithium metal and the lithium metal anode protective layer including one or more selected from the group consisting of lithium iodide and lithium fluoride, and a method of depositing a lithium metal anode protective layer (a single layer or multi layers) on a lithium metal anode, the method including providing a coating composition including one or more selected from the group consisting of lithium iodide and lithium fluoride on the lithium metal anode, and depositing the lithium metal anode protective layer including the coating composition on the lithium metal anode by conducting a thermal evaporation.

Abstract: A battery cell including a cathode current collector, a cathode, an anode current collector, optionally an anode, and a solid state electrolyte comprising a non-aqueous solvent, an aluminium-based halogenated compound AlXn and/or a polymeric form thereof, wherein X is a halogen atom and n is between 1 and 6, a metal salt of the alkali metal, the alkaline earth metal or the metal of Group Ib, Group IIb, or Group IIIa of the periodic table, and a bis(fluorosulfonyl)imide anion.

Abstract: A solid state electrolyte (SSE) for an anode-free metal battery cell, wherein the metal is an alkali metal, an alkaline earth metal or a metal of Group Ib, Group IIb, or Group IIIa of the periodic table, the SSE comprising a non-aqueous solvent, a metal salt of the alkali metal, the alkaline earth metal or the metal of Group Ib, Group IIb, or Group IIIa of the periodic table, an aluminium-based halogenated compound AlXn, wherein X is a halogen atom and n is between 1 and 6, and a bis(fluorosulfonyl)imide anion. Also, a method of producing such a SSE comprising preparing a liquid precursor and exposing the liquid precursor to a temperature between 20° C. and 80° C. to solidify the liquid precursor, thereby obtaining the solid state electrolyte.

Abstract: An electrolyte composition for an anode-free metal battery cell, wherein the metal is an alkali metal, an alkaline earth metal, or a metal of Group IIIa of the periodic table, including a first solvent, a salt of the alkali metal, the alkaline earth metal or the metal of Group IIIa of the periodic table, the salt being soluble in the first solvent, and an additive. The concentration of the salt in the electrolyte is between 2 M and 3 M, and the additive is a perfluorinated organic compound including at least one halogen atom. The halogen is chlorine, bromine or iodine. An anode-free metal battery cell can include the electrolyte composition.

Abstract: A fuel cell including a two-stage, fluid compressor including a case having a fluid inlet and a compressed fluid outlet and containing a shaft rotatably mounted about a longitudinal axis, first and second compression wheels mounted back-to-back on the shaft and forming respectively first and second compression stages, and a motor positioned between the first and second compression wheels and arranged to rotate the shaft. The case includes a through inner housing extending coaxially to the longitudinal axis and inside which is arranged at least the motor, the inner housing having an internal wall arranged to form, with the motor, channels between at least the inner wall and the motor, the channels extending between the first and second compression stages, allowing the motor to be cooled.

Abstract: A method for machining ribs or grooves on a workpiece such as a shaft or an air or gas axial bearing intended to be rotated about a longitudinal axis of a centrifugal compressor. All of the ribs or grooves are obtained at once by the machining tool on a workpiece portion driven such that it rotates, by moving the workpiece or the tool holder in a longitudinal machining direction, the machining tool moving back and forth with a machining position in contact with the workpiece and a position wherein it is not in contact with the workpiece from the start to the end of the workpiece portion. The back-and-forth movements of the machining tool are synchronised with the sinusoidal program set up in the machining unit, as well as with the desired, programmed arrangement of the ribs or grooves to be produced on the workpiece portion.

Abstract: An active material for an electrode for a battery cell, wherein the active material comprises H2-xV3O8, wherein x is between 0.01 and 0.99. Also, a method for producing an active material for an electrode comprising a step of oxidation of H2V3O8, thereby obtaining H2-xV3O8, wherein x is between 0.01 and 0.99, as the active material, wherein the oxidation is performed at a temperature between 80° C. and 150° C., preferably between 100° C. and 130° C.

Abstract: A device for recovering and regulating thermal energy of an electric vehicle with an electrochemical generator wherein a fluid circulates, includes an air-conditioning circuit, a first heating or thermal energy recovery circuit for heating and a second cooling or thermal energy recovery circuit for cooling the electrochemical generator, an electric motor, an electronic circuit, and a braking circuit. A plurality of valves are arranged to put the air- conditioning circuit in communication with the first heating circuit or second cooling circuit, and means for controlling said valves arranged to allow, according to a temperature of the electrochemical generator, of the electric motor, of the electronic circuit and of the braking circuit, the circulation of the fluid from the air-conditioning circuit in the first heating circuit for a heating operation as well as the circulation of the fluid from the air-conditioning circuit in the second cooling circuit for a cooling operation.

Abstract: A balancing unit is installed on a battery cell, and includes an element for measuring state parameters of the cell, a wireless communication element, making it possible to send and receive state parameters, and a wireless power transfer element.

Abstract: A solid single-ion conductive polymer comprising a repeat unit of formula (Ia): wherein R1 is H, or C1 to C16 linear or branched alkyl, alkenyl, alkinyl; m is 1 to 5; each M+ is independently selected from Li+, Na+ or K+; and X is selected from CF3, CH3, or F; and the polymer has an average molecular weight of 350.000 to 1.200.000 Da.

Abstract: A heat pump including a two-stage, high speed fluid compressor including a case having a fluid inlet and a compressed fluid outlet and containing a shaft rotatably mounted about a longitudinal axis, a first compression wheel and a second compression wheel mounted back-to-back on the shaft, the first compression wheel forming a first compression stage and the second compression wheel forming a second compression stage, and a motor positioned between the first compression wheel and the second compression wheel and arranged to rotate the shaft. The case includes an inner through housing extending coaxially to the longitudinal axis and inside which is arranged at least the motor, the inner housing having an inner wall arranged to form, with the motor, channels between at least the inner wall and the motor to cool the motor.

Abstract: A two-stage, high speed fluid compressor including a case having a fluid inlet and a compressed fluid outlet and containing a shaft rotatably mounted about a longitudinal axis, a first compression wheel and a second compression wheel mounted back-to-back on the shaft, the first compression wheel forming a first compression stage and the second compression wheel forming a second compression stage, and a motor positioned between the first compression wheel and the second compression wheel and arranged to rotate the shaft. The case includes an inner through housing inside which is arranged at least the motor, the inner housing having an inner wall arranged to form, with the motor, channels between at least the inner wall and the motor, the channels extending to cool the motor in contact with the fluid flowing in the channels.

Abstract: A heating, ventilation and air conditioning system including a two-stage, high speed fluid compressor including a case having a fluid inlet and a compressed fluid outlet and containing a shaft rotatably mounted about a longitudinal axis, a first compression wheel and a second compression wheel mounted back-to-back on the shaft, the first compression wheel forming a first compression stage and the second compression wheel forming a second compression stage, and a motor positioned between the first compression wheel and the second compression wheel and arranged to rotate the shaft. The case includes a through inner housing inside which is arranged at least the motor, the inner housing having an internal wall arranged to form, with the motor, channels between at least the inner wall and the motor, the channels allowing the motor to be cooled on contact with fluid.

Abstract: The present invention relates to a liquid electrolyte formulation for a lithium metal secondary battery comprising: a conductive lithium salt which is selected from the group consisting of LiTFSI, LiFSI, LiCl, LiF, LiCN, LiC2N3, LiN3, LiNO2, LiNO3, LiBF4, LiPF6, LiAsF6, LiSbF6, and LiAlCl4 a first ionic liquid having the formula (CATION)FSI, wherein CATION is selected from the group consisting of alkyl pyrollidinium and alkyl piperidinium, a second ionic liquid as anti-corrosion agent, said second ionic liquid having the formula (CATION)(ANION) where (CATION) is defined as above and (ANION) is an anion comprising at least one nitrile functionality. The present invention relates also to a process for preparing such liquid electrolyte formulation and a lithium metal secondary battery comprising said liquid electrolyte formulation.

Abstract: A method for producing conductive carbon coated particles of an at least partially lithiated electroactive core material comprises the step of premixing an oxidant electroactive material with a metallated reductant followed by chemically reacting the oxidant electroactive material with the metallated reductant, said reductant being a coating precursor, said metal being at least one alkaline and/or at least one alkaline earth metal, and said chemically reacting being performed under conditions allowing reduction and metallation of the electroactive material via insertion/intercalation of the alkaline metal cation(s) and/or the alkaline earth metal cation(s) and coating formation via a polymerisation reaction like polyanionic or radicalic polymerisation of the reductant.