Abstract: A busbar module includes: a circuit body having a flexible circuit board; busbars; and a holder. The circuit body has: conductor layers and protective layers to form a multiple-layered structure of wiring patterns; a band-shaped main strip to be located to extend in a stacking direction of cells; and a band-shaped branch strip branched from the main strip. The branch strip has: a bent portion extending in the stacking direction and having a bent shape around an axis crossing the stacking direction; and a connection portion disposed closer to an end of the branch strip than the bent portion and connected to the corresponding busbar. The bent portion has a thin-layer portion having a shape formed by removing, from the flexible circuit board, a part of the protective layers corresponding to a part of the conductor layers without being used as the wiring pattern in the branch strip.

Abstract: Provided is a positive electrode material that allows reducing the low-temperature resistance of a secondary battery. The positive electrode material of a secondary battery includes positive electrode active material particles each having a void in the interior, and a compound (A) that is present at least within the void. The average diameter of the void is not less than 0.01 ?m and not more than 1 ?m. The compound (A) is a nitrile group-containing polymer, and the proportion of nitrogen atoms, relative to metal atoms included in the positive electrode active material particles, other than lithium, is not less than 1 atom % and not more than 10 atom %; alternatively, the compound (A) is an alkoxysilane compound, and then the proportion of silicon atoms, relative to metal atoms included in the positive electrode active material particles, other than lithium, is not less than 1 atom % and not more than 10 atom %.

Abstract: A pouch-type secondary battery includes an electrode assembly, and a pouch member in which the electrode assembly is accommodated and a sealing portion is formed on an edge of the pouch member, where the sealing portion protruding on one side surface extends in a diagonal direction towards the other side surface adjacent to the at least one side surface.

Abstract: A cathode active material for a lithium secondary battery includes a lithium-transition metal composite oxide particle having a lattice strain (?) of 0.18 or less, which is calculated by applying Williamson-Hall method defined by Equation 1 to XRD peaks measured through XRD analysis, and having an XRD peak intensity ratio of 8.9% or less, which is defined by Equation 2. By controlling the lattice strain and XRD peak intensity ratio of the lithium-transition metal composite oxide particle, a lithium secondary battery with improved life-span characteristics as well as output characteristics is provided.

Abstract: A cover assembly of a secondary battery. The cover assembly includes: a cover plate including a gas vent; a gas exhaust valve configured to seal the gas vent and deform in response to an increase in temperature to get out of a state of sealing the gas vent; and a sealing part arranged between the gas exhaust valve and the cover plate and surrounding the gas vent for sealing a gap between the gas exhaust valve and the cover plate.

Abstract: A separator, a method of manufacturing the same, and a lithium secondary battery including the same are disclosed herein. In some embodiments, a separator includes a non-crosslinked polyolefin layer; and a crosslinked polyolefin layer disposed on one surface of the non-crosslinked polyolefin layer and having at least one crosslinking bond represented by the following Chemical Formula 1, wherein the separator is configured such that the non-crosslinked polyolefin layer of the separator faces a positive electrode. In some embodiments, a lithium secondary battery includes a positive electrode, a negative electrode and the separator interposed between the positive electrode and the negative electrode. The lithium secondary battery has a high melt-down temperature and shows high oxidation stability under high-voltage/high-temperature environment.

Abstract: The present disclosure relates to an electrolyte for a lithium secondary battery, and in particular, to a liquid electrolyte capable of stabilizing lithium metal and suppressing lithium dendrite growth, and a lithium secondary battery including the same. The lithium secondary battery provided with the electrolyte according to the present disclosure has an excellent cycle-dependent capacity retention rate, and accordingly, is effective in improving a battery lifespan property.

Abstract: Implementations of the present disclosure generally relate to separators, high performance electrochemical devices, such as, batteries and capacitors, including the aforementioned separators, and methods for fabricating the same. In one implementation, a method of forming a separator for a battery is provided. The method comprises exposing a metallic material to be deposited on a surface of an electrode structure positioned in a processing region to an evaporation process. The method further comprises flowing a reactive gas into the processing region. The method further comprises reacting the reactive gas and the evaporated metallic material to deposit a ceramic separator layer on the surface of the electrode structure.

Abstract: Disclosed is a battery module capable of reducing manufacturing costs and improving manufacturing efficiency. The battery module includes a cell assembly having a plurality of secondary batteries; a battery management unit having a printed circuit board with a printed circuit, the printed circuit board having a connecting portion on inner and outer peripheries of which a connecting conductor is coated to be electrically connected to the printed circuit; and a bus bar plate having a plate shape, the bus bar plate having a connection portion configured to electrically connect the plurality of secondary batteries and a sensing portion with a strip form elongated from one side end of the connection portion, the sensing portion having a bent structure where a longitudinal end thereof is bent at least two times, at least a part of the bent structure being in elastic contact with an inside of the connecting portion.

Abstract: A battery pack assembly includes a plurality of battery cells and a pair of elongated connector terminal plates. Each battery cell has a terminal side and an opposite floor side. A pair of terminals extend from each of the plurality of battery cells on the terminal side. Each of the pair of elongated connector terminal plates includes an upper and a lower elongated terminal connector. The upper and lower elongated terminal connector plates of each of the pair of elongated connector terminal plates are configured to independently move between an aligned position and an engaged position such that in the engaged position the pair of elongated connector terminal plates retain the plurality of battery cells and in the aligned position the pair of elongated connector terminal plates are removed from the battery pack releasing the plurality of battery cells.

Abstract: An elastic electrode structure for an electronic cigarette is disclosed. The electronic cigarette includes an atomizing assembly and a battery assembly. The battery assembly has a threaded sleeve arranged on an upper end thereof. The elastic electrode structure includes an electrode ring arranged in the threaded sleeve. The electrode ring has a lower end extending out from a through hole defined at the bottom of the threaded sleeve. The elastic electrode structure further includes an insulating ring arranged between the electrode ring and the threaded sleeve, and the elastic electrode structure further includes an elastic sealing ring arranged between the electrode ring and the insulating ring. The elastic electrode structure has good leak-proofing effect and low cost.

Abstract: The invention relates to an acrylonitrile copolymer binder and application thereof in lithium ion battery, belonging to the field of lithium ion battery. The technical problem to be solved by the invention is to provide an acrylonitrile copolymer binder comprising the following structural units in percentage by weight: 78-95% of acrylonitrile unit, 1-10% of acrylic ester unit and 2-15% of acrylamide unit.

Abstract: In order to provide a battery module and the like capable of maintaining a fastened state of a plurality of battery cells with high reliability, battery module includes a plurality of battery cells each having electrode terminals, a pair of end plates that cover both side end surfaces of battery stack including the plurality of stacked battery cells, and a plurality of fastening members that fastens end plates to each other. End plate forms overlapping portion that covers at least a portion of each fastening member covering each side surface of battery cells located on the both side end surfaces of battery stack, and overlapping portion and the fastening members are welded and fixed. According to the above configuration, by welding in a state in which a side surface of fastening member is further covered with overlapping portion, there is an advantage that firm fixation can be achieved while preventing disengagement of fastening member.

Abstract: A high-voltage accumulator has a high-voltage accumulator housing in which multiple electric storage cells are arranged. A wall of the high-voltage accumulator housing is equipped with at least one aeration/ventilation device which is gas-permeable at least from the interior of the high-voltage accumulator housing to the exterior of the high-voltage accumulator housing such that gas can leak out of the interior of the high-voltage accumulator in the event of an overpressure in the interior of the high-voltage accumulator housing. The aeration/ventilation device is equipped with a device, by which a substance that accumulates on the aeration/ventilation device and partly or completely blocks same can be removed.

Abstract: A secondary battery capable of improving cycle characteristics, conservation characteristics, and load characteristics is provided. The secondary battery includes a cathode, an anode, and an electrolytic solution. A separator provided between the cathode and the anode is impregnated with an electrolytic solution. The electrolytic solution includes one or more of a dicarbonic ester compound, a dicarboxylic compound, a disulfonic compound, a monofluoro lithium phosphate, and difluoro lithium phosphate and one or more of fluorinated lithium phosphate, fluorinated lithium borate, and imide lithium.

Abstract: Provided are an electrode catalyst layer, a membrane electrode assembly and a polymer electrolyte fuel cell, having sufficient drainage property and gas diffusibility with high power generation performance over a long term. An electrode catalyst layer (10) bonded to a surface of a polymer electrolyte membrane (11) includes at least a catalyst substance (12), a conductive carrier (13), a polymer electrolyte (14) and fibrous substances (15). The number of the fibrous substances (15) in which inclination ? of axes with respect to a surface of the electrode catalyst layer (10) bonded to the surface of the polymer electrolyte membrane (11) is 0°??<45°, among the fibrous substances (15), is greater than 50% of the total number of the fibrous substances (15) contained.

Abstract: A cell holder made up of a top tray, an intermediate tray and a frame. Cells are placed with minimal force in the frame to stand proud of it. The intermediate tray is placed over the projecting tops of the cells and serves to locate the cells. A busbar in the intermediate tray is connected to one set of terminals. A top tray is placed over the intermediate tray and snap-locked through the intermediate tray to the frame. The snap-lock distance is short. A busbar in the top tray is connected to the other set of terminals. The top tray shields the first busbar. Vents may be included to allow for the escape of hot cell gases in the event of failure.

Abstract: Provides is a cathode active material comprising particles each containing a lithium composite oxide, a coating layer containing an ammonium phosphate compound containing a metal other than lithium. The coating layer coats each of the particles. The metal other than lithium includes at least one selected from the group consisting of manganese, nickel, and cobalt.

Abstract: A method of manufacturing a battery pack including battery cells that have electrode tabs protruding from an outer surface includes stacking the battery cells and housing the battery cells in a case so that the electrode tabs protrude from slits in the case, bending the electrode tabs protruding from the slits so that the electrode tabs of adjacent battery cells are folded and overlap each other, and welding the folded and overlapping portion of the electrode tabs.

Abstract: Disclosed herein is a battery case configured to receive an electrode assembly and an electrolytic solution therein, the electrode assembly including a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode, the battery case including a layer structure and a gas adsorption layer formed on the inner surface of the layer structure, the gas adsorption layer including a gas adsorption material layer configured to adsorb a reaction gas that may be generated within the battery case during abnormal functioning of the electrode assembly, and a blocking layer formed on an exposed surface of the gas adsorption material layer, the blocking layer configured to prevent the gas adsorption material layer from being exposed to an ambient gas during assembly of the battery case.