Abstract: The present invention relates to a process for decreasing the internal impedance of a lithium battery chosen from lithium-metal-polymer batteries and lithium-ion polymer batteries, said process comprising at least one first step consisting in raising said battery to a temperature T1 of at least 50° C., and at least one second step in which said battery is maintained for between 5 hours and 1 week at the temperature T1 while applying a pressure of at least 0.5 bar.

Abstract: A lithium battery comprising a plurality of electrochemical cells assembled together, the electrochemical cells assembled with electrochemical cells of different characteristics to compensate the heat loss through heat sinks in the battery.

Abstract: A solid polymer electrolyte for a battery is disclosed. The solid polymer electrolyte includes solid polymer electrolyte including a diblock copolymer AB or a triblock copolymer of the BAB type, in which block A is an unsubstituted polyethylene oxide chain having a number-average molecular weight less than 80,000 g/mol; block B is an anionic polymer prepared from one or more monomers selected from vinyl monomers and derivatives thereof to which is grafted an anion of lithium salt, and a second monomer having cross-linking functions.

Abstract: The present disclosure is within the field of capacitive electrical energy storage, to supply electric or hybrid vehicles. It relates to a reconfigurable electrical energy storage device, wherein the internal connections between the different energy storage modules is modifiable. The device includes: M×N storage modules, where M and N are strictly positive natural numbers, each storage module storing electrical energy by capacitive effect between a negative terminal and a positive terminal; contactors arranged to order to make it possible to connect by their terminals M1×Ni storage modules, in different combinations, each combination denoted by an index i including Mi branches connected in parallel, each branch including Ni storage modules connected in series, where Mi×Ni?M×N; and positive and negative electrical connection terminals to which are capable of being connected, in each combination, the ends of the branches connected in parallel.

Abstract: The invention relates to an electrical energy storage module (1), comprising an enclosure (21) inside which is housed at least one electrical energy storage element (31), said enclosure (21) being closed by a cover (22) provided with two output terminals (41, 42) having positive and negative polarity respectively. Said module is remarkable in that at least one of the two output terminals (41, 42) comprises a flexible cable (410, 420) having an electrically conductive central core surrounded by an electrically insulating sleeve and provided at the free end thereof with an electrical connector (43, 44), and in that said flexible cable (410, 420) passes through the cover (22) in such a way as to present an electrical contact area (413, 423) on the inside face (222) of said cover, said electrical contact area (413, 423) being in electrical contact with said electrical energy storage element (31), and in that the output terminal (43, 41) comprises an electrical connector (44, 43).

Abstract: A lithium metal battery is disclosed. The lithium battery comprising a Li metal anode, a cathode and an electrolyte in between the Li metal anode and the cathode wherein the electrolyte includes immobilized anions at least at the interface between the Li metal anode and the electrolyte to maintain the anionic concentration at the interface above zero throughout the charge-discharge cycles thereby preventing surface potential instability at the interface of the Li metal anode and electrolyte.

Abstract: A conversion circuit device for connecting lithium based batteries to a standard inverter/charger for lead-acid batteries and an Uninterruptible Power Supply (UPS) system for homes and facilities comprising a standard inverter/charger for lead-acid batteries, at least one lithium based battery, and a conversion circuit device connecting the at least one lithium based battery to the standard inverter/charger; the conversion circuit device translating the state of the at least one lithium based battery into signals that correspond to the state of a lead-acid battery

Abstract: A solid polymer electrolyte for a battery is disclosed. The solid polymer electrolyte includes a polymer capable of solvating a lithium salt, a lithium salt, and nanocellulose in the form of nanofibers or nanocrystals onto which are grafted anions of lithium salt, the nanofibers or nanocrystals cellulose providing increased mechanical strength to the solid polymer electrolyte to resist growth of dendrites on the surface of the metallic lithium anode.

Abstract: The present invention relates to a rolling device including a stationary first assembly (110), comprising at least one first rolling cylinder (110), and a movable second assembly (120), comprising at least one second rolling cylinder (122). The second assembly (120) is movable along at least one degree of freedom relative to the stationary first assembly (110) such that the axis (X2) of the second cylinder (122) is movable relative to that of the first cylinder (110) so as to control the distance between the cylinders (110, 120).

Abstract: The invention relates to a method for charging a battery comprising rechargeable cells. According to the invention, to perform the ith charge of the battery, where i?2, connection of the charging terminals to the charger is detected triggering connection of the cells to their bypass circuit during a pre-emptive bypass time (TPji). Next, for each cell, during a second phase (Cji), the bypass circuit is disconnected from the cell until the voltage of the cell reaches a preset voltage, the pre-emptive bypass time (TPji) for the ith charge having been calculated as a function of the total connection time, during at least one preceding charge, of the bypass circuit associated with this cell, until all the cells have reached the preset voltage. At least one length of time allowing the first time (TPji) for the ith charge and/or said total connection time to be determined was memorized in a memory of the battery during this at least one preceding charge.

Abstract: The invention concerns a positioning spacer for positioning electrical energy storage elements, such as supercapacitors or ultracapacitors connected in series, in an electrical energy storage module, wherein the spacer comprises a first support part and a second part forming a rim relative to the first part, the positioning spacer comprising, at the free end of the second part thereof, at least one housing recess, the spacer being made from an electrically insulating material.

Abstract: The present invention relates to an electricity storage unit comprising a plurality of energy storage cells (1) positioned side by side and a rigid enclosure (10) surrounding said cells (1), comprising two separate parts (100A, 100B), a first part of the enclosure comprising at least one reference wall, in particular made up of a lower wall (110A), the unit comprising:—at least one stop (200, 220, 230) made from an elastically deformable material that comprises at least one so-called main wall (214, 224, 240), extending along a plane essentially normal to the reference wall (110A) and which is positioned between two of the cells (1), such that at least one stop (200, 220, 230) is placed between each pair of adjacent cells (1), and—pressing means (300) designed to bear on a face of each of the cells (1) in order to press each cell (1) against the reference wall (110A), the pressing means (300) being removably fastened to the first part (100A) of the enclosure (10).

Abstract: The present invention relates to a rolling device including a stationary first assembly (110), comprising at least one first rolling cylinder (110), and a movable second assembly (120), comprising at least one second rolling cylinder (122). The second assembly (120) is movable along at least one degree of freedom relative to the stationary first assembly (110) such that the axis (X2) of the second cylinder (122) is movable relative to that of the first cylinder (110) so as to control the distance between the cylinders (110, 120).

Abstract: A method is provided for developing a hybrid supercapacitor. The method includes the use of a lithium salt of the electrolyte to carry out the intercalation/insertion of the lithium at the negative electrode but by greatly increasing the concentration of lithium ions of the electrolyte order to subsequently accept a depletion. As the depletion in ions has an impact on the conductivity, the amount and the concentration of the electrolyte are chosen in order to make it possible to accept this depletion white retaining a conductivity of the electrolyte compatible with a powerful system for storage of energy. A portion of the Li+ ions present in the electrolyte is used to form the passivation layer and the compound for intercalation/insertion Li˜0.5C6 at the negative electrode.

Abstract: The invention relates to an electrical energy storage system (100) comprising at least one coiled electrical energy storage element placed inside an envelope (200), said envelope (200) containing the coiled electrical energy storage element in a main body (210) of the envelope (200) and including at least one lid (230, 240), characterized in that said lid (230, 240), placed at one end of the main body of the envelope (200) and electrically connected by electrical connection means (280) to the coiled electrical energy storage element, is fastened to the main body (210) of the envelope (200) by a bonding means (600). The invention is particularly applicable in the production of electrical energy storage assemblies such as supercapacitors, batteries or generators.

Abstract: The invention relates to a module comprising at least two electrical energy storage assemblies (20), each storage assembly (20) comprising a first face topped by a cover (30) electrically connected to said energy storage assembly (20) and a second face opposite the first face, each cover being in contact with a respective end of a strip (40) in order to electrically connect the two storage assemblies (20), in which the strip (40) and the faces of the covers (30) in contact with the strip (40) are flat, the strip (40) being welded to the faces of the covers (30) along weld leads (50, 50?).

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: An electrode paste for a supercondenser. The electrode paste is a mixture containing a polymer formed using a liquid softening agent and an active charge. The paste is in the form of gel having an elasticity module of between 104 and 108 Pascal, at extrusion temperatures, in a range of frequencies of between 0.01 and 100 Hz.

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.