Abstract: A novel or improved base film for impregnation, impregnated base film, product incorporating the impregnated base film, and/or related methods as shown, claimed or described herein.

Abstract: The present disclosure is directed to a negative electrode active material for lithium secondary batteries, to a method for preparing the same, and to a lithium secondary battery including the same, the negative electrode active material including a porous core in which scaly silicon fragments are connected in an entangled manner; and a shell layer covering the core, where the shell layer includes a carbon-based material and silicon.

Abstract: The present invention provides an electrolytic solution capable of providing an electrochemical device, such as a lithium ion secondary battery, or a module that has excellent high-temperature storage performance. The electrolytic solution contains: a homocyclic compound other than aromatic compounds; and a cyclic dicarbonyl compound. The homocyclic compound contains at least one group selected from the group consisting of a nitrile group and an isocyanate group.

Abstract: Slurry compositions, tape casting binder systems and fabrication methods for the fabrication of lithium-garnet electrolyte scaffolds for use in solid state batteries and other devices are provided. Slurry compositions may be optimized mixtures of LLZO powder, a dispersant, a lithium salt, a wetting agent a binder, a plasticizer and at least one solvent. The optimized ceramic slurry compositions may include MgO as a sintering additive to improve density and ionic conductivity of the doped-LLZO sheets and produce a fine-grained microstructure. Sintering protocols for cast slurries of commercially available doped LLZO powders eliminate the requirement of mother-powder coverings or externally applied pressure. An environmentally friendly water-based system using methylcellulose as a binder is also provided producing green tape and final properties comparable to those obtained with organic solvent-based systems.

Abstract: A battery diagnosing apparatus includes a measuring unit configured to measure discharge capacity and temperature of a battery, an ohmic resistance determining unit configured to determine an ohmic resistance of the battery based on an impedance profile generated for the battery, and a control unit configured to calculate a capacity change rate by comparing the discharge capacity of the battery measured by the measuring unit with a reference capacity, calculate a resistance change rate by comparing the ohmic resistance determined by the ohmic resistance determining unit with a reference resistance, judge an internal gas generation level of the battery by comparing magnitudes of the calculated resistance change rate and a criterion resistance change rate, and judge an internal gas generation cause of the battery by comparing magnitudes of the calculated capacity change rate and a criterion capacity change rate.

Abstract: Electrolytes and electrolyte additives for energy storage devices comprising an ether compound are disclosed. The energy storage device comprises a first electrode and a second electrode, wherein at least one of the first electrode and the second electrode is a Si-based electrode, a separator between the first electrode and the second electrode, an electrolyte, and at least one electrolyte additive selected from ether compounds.

Abstract: An all-solid secondary battery includes a solid electrolyte layer disposed between an anode layer and a cathode layer, where the solid electrolyte layer contains a first solid electrolyte layer including a first solid electrolyte and a second electrolyte layer including a second solid electrolyte, where the first solid electrolyte is disposed proximate to the anode layer, the second solid electrolyte layer is disposed proximate to the cathode layer, and the first solid electrolyte has a lithium ion conductivity greater than a lithium ion conductivity of the second solid electrolyte, where a difference between the lithium ion conductivity of the first solid electrolyte and the lithium ion conductivity of the second solid electrolyte is equal to or greater than about 2 mS/cm.

Abstract: Disclosed are a method for manufacturing a secondary battery pouch film having at least an outer layer, a metal layer, a primer layer, and a sealant layer, or at least an outer layer, a metal layer, a primer layer, a melt-extrusion resin layer, and a sealant layer in this order, the method including: a drying process of applying and heating a primer layer composition on the metal layer so as to dry the primer layer composition and cure at least a part of the primer layer composition. The organic solvent-based emulsion composition contains acid-modified polypropylene and a curing agent and has a curing start temperature of 150° C. or lower, preferably 135° C. to 150° C., and a drying process temperature of 150° C. or lower, preferably 135° C. to 150° C. The method is not subjected to a thermal lamination process when laminating sealant layer.

Abstract: A thermal battery assembly includes a modules configured to be stacked vertically on top of each other. The modules includes an electronics module; a first tank module; and a second tank module. A base defines a bottom of the stack and is configured to receive thereon the lowermost module of the stack for supporting the stack on a floor. Each tank module includes a phase change material (PCM); a heat exchanger assembly with heat exchangers immersed in the phase change material, a first set thereof defining a PCM charging circuit, and a second set defining a PCM discharging circuit; a first exterior connection port configured for fluid communication with an inflow of the PCM discharging circuit and a second exterior connection port configured for fluid communication with an outflow of the PCM discharging circuit. Heating or cooling capacity can be increased by adding another tank module to the stack.

Abstract: A high-voltage apparatus includes a battery unit, a case that includes a circumferential wall section in which a cable insertion port that opens sideways is formed and that is configured to accommodate the battery unit, and a water detection sensor that is disposed at a portion located adjacent to the circumferential wall section below the cable insertion port inside the case and that is configured to detect water that has entered the case.

Abstract: A solid electrolyte membrane and method of preparing, including a plurality of polymer filaments arranged crossed as a 3-dimensional structure in the form of a net of nonwoven fabric-like shape, and a plurality of inorganic solid electrolytes inserted and uniformly distributed in the structure. By this structural feature, a large amount of solid electrolyte particles are uniformly distributed and filled in the electrolyte membrane, contact between the particles is good, and ionic conduction paths are sufficiently provided. Additionally, the durability of the solid electrolyte membrane is improved by the 3-dimensional structure, and the flexibility and strength increase. The nonwoven fabric composite solid electrolyte membrane has an effect in preventing inorganic solid electrolyte particle from being disconnected therefrom.

Abstract: The invention is directed towards a battery. The battery includes a cathode, an anode, a separator between the cathode and the anode, and an electrolyte. The cathode includes a conductive additive and an electrochemically active cathode material. The electrochemically active cathode material includes a beta-delithiated layered nickel oxide. The beta-delithiated layered nickel oxide has a chemical formula. The chemical formula is LixAyNi1+a?zMzO2·nH2O where x is from about 0.02 to about 0.20; y is from about 0.03 to about 0.20; a is from about 0 to about 0.2; z is from about 0 to about 0.2; and n is from about 0 to about 1. Within the chemical formula, A is an alkali metal. The alkali metal includes potassium, rubidium, cesium, and any combination thereof. Within the chemical formula, M comprises an alkaline earth metal, a transition metal, a non-transition metal, and any combination thereof. The anode includes an electrochemically active anode material.

Abstract: Methods of reducing acid stratification with an acid-soluble and acid-stable polymer with a high molecular weight are disclosed herein. Electrolytes and separators for an energy storage device are disclosed herein. The separator includes a coating containing an acid-soluble and acid-stable polymer with a high molecular weight. The electrolyte includes sulfuric acid and an acid-soluble and acid-stable polymer with a high molecular weight. Methods of making the separators disclosed herein and methods of making batteries are also disclosed herein.

Abstract: The invention relates to a method for line pressure monitoring, in particular for detecting leaks, in a bidirectionally used line section (40a) of a connection line unit (40) in an energy system (10), in particular in a domestic energy system, as well as an energy system (10) of this type, wherein a first energy source unit (21) and a first energy sink unit (22) are positioned on the first side (43) of the bidirectional line section (40a), and wherein a second energy source unit (31) and a second energy sink unit (32) are positioned on the second side (44) of the bidirectional line section (40a).

Abstract: A composite fuel cell polymer electrolyte membrane. The composite membrane includes a polymer electrolyte membrane base material including first and second inorganic particles. The first and second inorganic particles are interspersed within the polymer electrolyte membrane base material and each other. The first and second inorganic particles have first and second surface properties and the first surface property is different than the second surface property.

Abstract: High energy density and long cycle life all solid-state electrolyte lithium-ion batteries use ceramic-polymer composite anodes which include a polymer matrix with ceramic nanoparticles, silicon-based anode active materials, conducting agents, lithium salts and plasticizer distributed in the matrix. The silicon-based anode active material are anode active particles formed by high energy milling a mixture of silicon, graphite, and metallic and/or non-metallic oxides. A polymer coating is applied to the particles. The networking structure of the electrolyte establishes an effective lithium-ion transport pathway in the electrode and strengthens the contact between the electrode layer and solid-state electrolyte resulting in higher lithium-ion battery cell cycling stability and long battery life.

Abstract: A battery module includes a battery and a covering put over a surface of the battery. The surface of the battery is provided with a valve to release gas produced inside the battery. The covering includes a thin-walled part and a thick-walled part disposed in a region contiguous to the thin-walled part. The thin-walled part is formed thinner in thickness than the thick-walled part.

Abstract: A method of controlling a battery including a first control circuit and a plurality of modules arranged in series between first and second terminals. Each module includes, between third and fourth terminals, electric cells and switches and a second switch control circuit. The battery further includes at least one first data transmission bus coupling the first control circuit to each second control circuit, the first control circuit including a memory having chained lists stored therein. Each chained list includes elements each including an identifier of one of the electric cells and at least one first pointer designating another element in the chained list.

Abstract: Disclosed are a method for manufacturing a secondary battery pouch film having at least an outer layer, a metal layer, a primer layer, and a sealant layer, or at least an outer layer, a metal layer, a primer layer, a melt-extrusion resin layer, and a sealant layer in this order, the method including: a drying process of applying and heating a primer layer composition on the metal layer so as to dry the primer layer composition and cure at least a part of the primer layer composition. The organic solvent-based emulsion composition contains acid-modified polypropylene and a curing agent and has a curing start temperature of 150° C. or lower, preferably 135° C. to 150° C., and a drying process temperature of 150° C. or lower, preferably 135° C. to 150° C. The method is not subjected to a thermal lamination process when laminating sealant layer.

Abstract: Methods and systems may provide for technology to detect an unbalanced degradation among a plurality of fuel cells in an automotive system and apply an unbalanced control across the plurality of fuel cells based on the unbalanced degradation. In one example, the unbalanced control balances the degradation among the plurality of fuel cells.