Abstract: A multi-layer cathode coating for positive electrode of a rechargeable electrochemical cell (or secondary cell) (such as a lithium-ion secondary battery) and a secondary battery including a cathode having a multi-layer cathode coating. Multi-layer cathode coatings containing blends of one or more cathode active materials in certain weight ratios thereof.

Abstract: The present disclosure relates to blended cathode materials for use as a positive electrode material of a rechargeable electrochemical cell (or secondary cell) (such as a lithium-ion secondary battery) and also relates to a secondary battery including a cathode having the blended cathode materials. In particular, disclosed are blends of lithium vanadium fluorophosphate (LVPF) or a derivative thereof with one or more conventional cathode active materials in certain weight ratios thereof.

Abstract: A disconnection device, in particular for disconnecting two electrically connected electrochemical elements. The present invention also relates to a device for short-circuiting two electrodes of opposite polarity in an electrochemical element. The subject matter of the invention includes an assembly comprising: ? a) a connecting part (3) and ? b) a disconnection device (4), the disconnection device being intended to disconnect two electrochemical elements (1, 2) connected by the connecting part (3), the disconnection device (4) comprising: ? i) microparticles (5) capable of expanding when their temperature reaches a threshold value, the threshold value being below 150° C., ? ii) a capsule (4a, 4b) enclosing all of the microparticles (5), the capsule (4a, 4b) being arranged such that when the temperature of the microparticles (5) reaches the threshold value, the expansion of the microparticles disconnects the connection between the two electrochemical elements (1, 2).

Abstract: A lithium-ion electrochemical cell comprising: a negative electrode comprising an active material selected from the group consisting of carbon, silicon and a carbon-silicon composite; a positive electrode; a gel-type electrolyte comprising a matrix which is a polymer resulting from the cross-linking of a monomer comprising at least two acrylate groups, in which matrix there is embedded a liquid mixture comprising at least one solvent, lithium hexafluorophosphate (LiPF6), at least one of lithium bis(fluorosulfonyl)imide (LiFSI) and lithium bis(trifluoromethanesulfonyl)imide (LiTFSI), lithium difluoro(oxalato)borate (LiDFOB) and a thermal initiator of radical polymerization.

Abstract: The present invention relates to an electrode comprising a current collector formed by a metal strip which is coated on at least one of the faces thereof with a composition of electrochemically active materials, the composition comprising at least one lithium manganese iron phosphate having the following formula: LixMn1-y-zFeyMzPO4, where M is selected from the group consisting of B, Mg, Al, Si, Ca, Ti, V, Cr, Co, Ni, Cu, Zn, Y, Zr, Nb and Mo, alone or in a mixture, with 0.8?x?1.2; 0.5?1-y-z<1; 0.05?y?0.5 and 0?z?0.2; the current collector having undergone chemical pickling of at least one of the faces thereof.

Abstract: The present invention relates to a device for inerting a battery comprising a first terminal and a second terminal, the first terminal and the second terminal presenting opposite polarity, the inerting device comprising a connection circuit, the connection circuit connecting the battery to at least one charging circuit, the connection circuit comprising a first connector, a second connector and a switching unit, the switching unit being able to switch between a first position in which the first connector is connected to the first terminal and a second position in which the first connector is connected to the second terminal.

Abstract: The invention relates to an electrochemical cell comprising: —at least one anode comprising metallic lithium or a lithium alloy or at least one anode comprising a current collector at least partially covered with metallic lithium deposited after at least one charge of the cell, the cell not containing metallic lithium at the time of its manufacture, —at least one cathode, - a liquid or gelled electrolyte composition comprising: a) a solvent comprising: i) either a mixture of 1,1,1,3,3,3-hexafluoro-2-methoxypropane (HFMP) and/or 1,1,1,3,3,3-hexafluoro-2-(fluoromethoxy)propane (HFMFP), ethylene monofluorocarbonate (F1EC) and 2,2,2-trifluoroethyl methyl carbonate (F3EMC), ii) or a mixture of 1,1,1,3,3,3-hexafluoro-2-methoxypropane (HFMP) and/or 1,1,1,3,3,3-hexafluo-ro-2-(fluoromethoxy)propane (HFMFP), ethylene monofluorocarbonate (F1EC) and 2,2,2-trifluoroethyl acetate (F3EA), b) at least one salt whose cation is the lithium cation, c) lithium difluorophosphate LiPO2F2 in an amount representing from 0.

Abstract: A power distribution unit for a vehicle including an enclosure and power distributing means for distributing electrical power between a battery and a load application, the enclosure including an external casing and an internal casing having a faceplate and a mounting plate, the mounting plate having upper dielectric partitions protruding upward from a top face of the mounting plate, and the power distributing means being mounted on the mounting plate, wherein the upper dielectric partitions are configured to both maintain a separation between different voltage groups and define an insulating barrier between components of the power distributing means, the internal cartridge is configured to be inserted into the external casing, and the enclosure is configured to be sealed from an external environment.

Abstract: The invention relates to a method for securing the operation of an industrial system comprising pieces of equipment, the process comprising a phase of obtaining a digital certificate authorizing an operator to access a piece of equipment in order to carry out an action, a phase of attempting to access a piece of equipment in order to carry out an action on the piece of equipment, the attempt phase comprising, in particular, a step of authorizing access to the piece of equipment in order to carry out an action when a compliance requirement relating to the digital certificate is met or refusing access when the compliance requirement is not met.

Abstract: Systems and methods for fire suppression, a fire suppression system including a container configured to receive frames, each of the frames including battery modules; a pipe system including at least one vertically extending pipe, the at least one vertically extending pipe configured to be provided between a respective two of the frames and configured to supply suppressant to at least one of the battery modules of each of the respective two of the frames via slots of the vertically extending pipe; at least one tank connected to the pipe system and configured to store the suppressant; at least one pump configured to recirculate the suppressant to the pipe system or a tank of the at least one tank; and an inlet body configured to connect with a suppressant source, that is external to the container, to provide new suppressant into the pipe system or the at least one tank.

Abstract: The present invention concerns a method for estimating the state of charge (SoC) of an electrochemical element.

Abstract: Pre-lithiation methods using lithium vanadium fluorophosphate (e.g., LiVPO4F and its derivatives) (“LVPF”) as a cathode active material in a lithium-ion secondary battery. The pre-lithiation methods include compensating for an expected loss of active lithium by selecting LVPF having a specific pre-lithiated chemistry (or a blend of LVPF selected to have a specific pre-lithiated chemistry) and selecting a total amount of the pre-lithiated LVPF. The pre-lithiation methods may include initially charging the lithium-ion secondary battery at the lower of the two charge/discharge plateaus of LVPF to release active lithium.

Abstract: The invention relates to an electrochemical element and a battery comprising one or more electrochemical elements, with integrated sensors and/or actuators, in particular including an application for monitoring the operation of an electrochemical element or a Li-ion battery, and/or triggering actions in such an element or such a battery, intended to secure the element or the battery. The electrochemical element (1) comprises a closed shell (2) defining an internal volume and a beam (3) arranged therein having alternating positive and negative electrodes respectively connected to two positive and negative electrical output terminals housing separators, the beam (3) being impregnated with electrolyte and further connected by connection means (4) to one (5) of the electrical output terminals.

Abstract: Provided is a positive electrode active material for a lithium-ion battery, the positive electrode active material including a blend of a doped lithium manganese iron phosphate (dLMFP) according to the formula: LiMnxFeyM1?x?yPO4, wherein 0.9<x+y<1; and M is one or more selected from the group consisting of Mg, Ca and Ba with one or both of a lithium nickel cobalt manganese oxide (NMC) compound having a Ni content greater than 0.6 relative to a total amount of metals other than Li and a lithium nickel cobalt aluminum oxide (NCA) compound. In particular, provided is a blend at a weight ratio of dLMFP to NMC and/or NCA (i.e., dLMFP:(NMC+NCA)) of >70:<30, such as 75:25, 80:20, 85:15, 90:10, etc.

Abstract: The present invention provides a mixed porous negative electrode comprising graphite and solid electrolyte particles, the structure and composition of which make it possible to increase the amount and quality of the lithium deposition while avoiding large variations in thickness.

Abstract: A method for treating a surface of a strip or film, the strip or film being made of lithium or a lithium-based alloy, the method comprising a step of radiating at least one portion of the surface of the strip or film with a laser beam, the radiating step being carried out in a controlled atmosphere, the laser beam radiating the entire area of the at least one portion of the surface of the strip or film.

Abstract: A lithium-ion secondary battery, including (A) an anode including an anode active material; (B) a cathode including a cathode active material; (C) a separator; and (D) an electrolytic solution, the anode active material including (a1) about 5.0 to about 45.0 wt % natural graphite particles, and (a2) about 95.0 to about 55.0 wt % artificial graphite particles; a size of both the natural and artificial graphite particles (a1), (a2) independently being about 2.0 ?m<D50<about 7.0 ?m; the electrolytic solution containing (d1) an organic solvent, (d2) a charge carrier, and (d3) one or more additive compounds for forming a solid electrolyte interphase (“SEI”) on the anode; and the organic solvent (d1) including about 10.0 to about 95.0 vol % of a linear ester of a C2 to C8 saturated acid; and a total weight of the additive compounds (d3) being about 0.20 to about 6.0 wt %.

Abstract: The present invention relates to a method for charging an electrochemical cell of a rechargeable battery with charging pulse control (PL), the pulses (PL) being driven in voltage control mode in the form of voltage steps (Pt) of variable amplitude. According to the invention, the method consists in calculating the value (Ut+1) of each voltage step (Pt+1) with respect to the value (Ut) of the preceding voltage step (Pt) and according to a progression variable representative of the variation in the internal resistance of the cell (d(R)/dt), for a period ending on the preceding step (Pt), with respect to a predetermined tolerated variation threshold (?), where Var=d(R)/dt??. The method applies to high-voltage electric battery charging protocols for electromobility or stationary applications, or portable device batteries, for example.

Abstract: The electrode comprises: a support defining a first lateral edge and an upper edge extending from the first lateral edge; a layer containing an active substance covering the support; and an electrical-connection tab devoid of the layer containing the active substance, the tab projecting from the upper edge in the vicinity of the first lateral edge; The electrode defines, in the vicinity of a second lateral edge of the support, a cutout extending, set back from the upper edge, in the continuation of the upper edge, towards the second lateral edge.

Abstract: The invention concerns a method for estimating the state of health (SOH) of an electrochemical element, comprising: initiating a charging or discharging operation of the electrochemical element; measuring values representing deformations of the electrochemical element while the charging or discharging operation is being performed, the deformation values measured forming a deformations image signal according to the quantity of electricity passing through the electrochemical element over time; comparing the deformations image signal and a reference image signal, one or more differences obtained by the comparison characterising an estimation of the ageing of the electrochemical element.