Abstract: The invention relates to an ion-conducting material containing an oligoether sulfate. The material comprises an ionic compound dissolved in a solvating polymer. The ionic compound is a mixture of a lithium bis(trifluoromethanesulfonyl)imide and of at least one lithium oligoether sulfate chosen from the lithium oligoether monosulfates corresponding to the formula R—[O—CH2—CH2)]n—O—SO3?Li+(I) in which R is a group CmH2m+1 with 1?m?4 and 2?n?17, and the lithium oligoether disulfates corresponding to the formula Li+O?SO2—O—CH2—[CH2—O—CH2]p—CH2—O—SO2—O?Li+(II) in which 3?p?45; the overall ratio Ot/Lit is less than or equal to 40, Ot representing the total number of O atoms provided by the solvating polymer and by the oligoether; the content of LiTFSI is such that the Ot/LiTFSI ratio is greater than or equal to 20.

Abstract: The invention relates to a method for preparing a lithium and vanadium oxide and the thus obtained products. The method comprises preparing a precursor gel by reacting hydrogen peroxide with ?-V2O5 in an aqueous medium in the presence of a lithium precursor and exposing the gel to a heat treatment in an oxidant atmosphere at a temperature ranging from 260° C. to 580° C. A compound of a formula Li1+xV3O8, (0.1<x<0.25) comprises needle-shaped grains having a bimodal distibution, wherein the length (L) of the first distribution needles ranges from 10 to 50 ?m and the length (L) of the second distribution needles ranges from 1 to 10 ?m.

Abstract: An electric energy storage component having coil windings and at least one connector. A plate of the connector is in contact with the coil windings. The plate of the connector has a surface which is provided with a terminal wherein the shape thereof is essentially that of a revolution. The plate also forms a series of bosses extending in a raised manner along a surface of the plate opposite to that containing the terminal. The terminal has at least one inner recess and at least one boss which penetrates into the recess.

Abstract: The invention relates to the preparation of an optionally carbonaceous ?-LiV2O5 material. The process consists in preparing a composition formed of carbon and of precursors of Li and of V and in subjecting it to a heat treatment. The composition is prepared by bringing carbon, ?-V2O5 and a Li precursor into contact in amounts such that the ratio of the [V2O5]/[Li] concentrations is between 0.95 and 1.05 and the carbon is in excess of at least 25% with respect to the stoichiometry. The heat treatment is carried out in two stages: a first stage at a temperature between 90° C. and 150° C. for a time of 1 to 12 hours and a second stage at a temperature between 420° C. and 500° C. for a time of between 10 min and 1 hour, under a nitrogen or argon atmosphere or under vacuum.

Abstract: The invention relates to the preparation of an optionally carbonaceous ?-LiV2O5 material. The process consists in preparing a composition formed of carbon and of precursors of Li and of V and in subjecting it to a heat treatment. The composition is prepared by bringing carbon, ?-V2O5 and a Li precursor into contact in amounts such that the ratio of the [V2O5]/[Li] concentrations is between 0.95 and 1.05 and the carbon is in excess of at least 25% with respect to the stoichiometry. The heat treatment is carried out in two stages: a first stage at a temperature between 90° C. and 150° C. for a time of 1 to 12 hours and a second stage at a temperature between 420° C. and 500° C. for a time of between 10 min and 1 hour, under a nitrogen or argon atmosphere or under vacuum. Applications: positive electrode active material.

Abstract: The invention relates to a nanostructured material. The material is a nanostructured carbonaceous material composed of agglomerates of small needles of Li1+?V3O8 and of ?-LixV2O5 (0.1???0.25 and 0.03?x?0.667) surrounded by a noncontinuous layer of spherical carbon particles. It is obtained by a process consisting in preparing a carbonaceous precursor gel by bringing carbon, ?-V2O5 and a Li precursor into contact in amounts such that the ratio of the [V2O5]/[Li] concentrations is between 1.15 and 1.5 and that the (carbon)/(carbon+V2O5+Li precursor) ratio by weight is from 10 to 15 and in subjecting the gel to a heat treatment comprising a 1st stage at 80° C.-150° C. for 3-12 h and a 2nd stage between 300° C. and 350° C. for 10 min to 1 hour, under an nitrogen or argon atmosphere. Applications: positive electrode active material.

Abstract: The application relates to a power battery module, comprising rechargeable cells having a nominal operating charging temperature, greater than 20° C. According to the application, the module comprises a circuit for managing charging of the cells which comprises: two external charging terminals for charging of the cells, wherein at least one, called second charging terminal, of the two external charging terminals is distinct from the external use terminals, first interruption/connection means between said second charging terminal and one of the use terminals, second linking means between the charging terminals and the heating element to connect, at least in the first interruption position, the charging terminals to a heating element of the cells.

Abstract: The application relates to a battery including a pack of modules, each containing rechargeable cells in series, the battery including means for measuring the voltage and/or the temperature of at least one module. According to the application, the battery includes: means for computing, based on the voltage and/or temperature measured by the measuring means and on a recorded characteristic of the discharge current and/or regeneration current of the battery, a maximum discharge and/or regeneration current limit (laut-reg)of the pack, a transmission means for transmitting to the outside the information on the maximum discharge and/or regeneration current limit of the pack.

Abstract: A connection device for an electric accumulator 10 a first connection subassembly 16 associated with one of the electrodes 12. It comprises a metallic conducting strip 20 provided with several pins that will be embedded in the electrode 12 to make the electrical contact, and temperature and/or electrical protection means housed in a fixed module 25 electrically connected to one of the ends of the strip 20.

Abstract: The application concerns a battery module, comprising cells, two external terminals, a message communication infrastructure, a module control unit comprising a message processing unit, connected to the infrastructure to send and receive messages. According to the application, at least two of the message systems chosen from among: a first message system for cell characterization, a second message system for cell forming, and a third message system for utilization of a battery pack comprising several modules connected via their user terminals, when the pack is associated with a consumer machine for the purpose of supplying it with electric energy, are provided in the message processing unit, which is able to be configured into any one of the message systems.

Abstract: The present invention relates to a device for making electric energy storage assemblies the device including multiple feed means for feeding sheet structures, means for laminating sheet structures received from the various feed means, winder means for winding the resulting laminate, and control means for controlling continuously and in controlled synchronous the feed means, the laminator means, and the winder means.

Abstract: The invention relates to the preparation of an optionally carbonaceous ?-LiV2O5 material. The process consists in preparing a composition formed of carbon and of precursors of Li and of V and in subjecting it to a heat treatment. The composition is prepared by bringing carbon, ?-V2O5 and a Li precursor into contact in amounts such that the ratio of the [V2O5]/[Li] concentrations is between 0.95 and 1.05 and the carbon is in excess of at least 25% with respect to the stoichiometry. The heat treatment is carried out in two stages: a first stage at a temperature between 90° C. and 150° C. for a time of 1 to 12 hours and a second stage at a temperature between 420° C. and 500° C. for a time of between 10 min and 1 hour, under a nitrogen or argon atmosphere or under vacuum. Applications: positive electrode active material.

Abstract: The invention relates to a method for treating a super capacitor electrode film (12) obtained by extruding a mixture of polymers and active charges without a solvent, said mixture comprising at least one soluble polymer. The method comprises a step in which an extractable part of the soluble polymer(s) is eliminated by immersing the film in an aqueous or organic solvent of said polymers. The invention is characterized in that the stage in which the polymer(s) is/are eliminated comprises sub-steps consisting in continuously placing the film (12) in a washing container (101) containing the solvent, wherein the solvent is kept at a controlled temperature; in rinsing the film, drying the film in a continuous manner and winding the film.

Abstract: The invention relates to the development of an electrochemical device including a lithium salt/polyether electrolyte film between two films forming the cathode and the anode, respectively. The method of the invention involves assembling a multilayer structure consisting of the current-collecting carrier, the cathode-forming film, the electrolyte-forming polyether film and the anode-forming film. The cathode and/or anode films are made of a composite material containing the lithium salt. The polyether film is lithium salt-free. The assembled device is allowed to rest for long enough to enable the lithium salt in the cathode and/or the anode to be dispersed throughout the polymer film.

Abstract: The invention relates to a method for producing a material for a composite electrode. The method is intended for the preparation of a composite material consisting of an active electrode material M1, a material C1 conferring electronic conductivity, an organic binder and a salt, said binder comprising a polymer P1 having an O, N, P or S heteroatom mass content of 15% or higher, a polymer P2 having an O, N, P or S heteroatom mass content of 5% or less, and a nonvolatile liquid organic solvent S1. It includes a step consisting in preparing a viscous solution containing at least one polymer P1, at least one polymer P2, a material C1, an active electrode material M1 and at least one nonvolatile solvent S1, and a step consisting in forming a film from the viscous solution obtained.