Abstract: A battery pack for an electric bicycle is disclosed. In one embodiment, the battery pack includes i) a lower case having a top, a bottom and an interior space formed between the top and bottom and ii) a battery cell placed in the interior space of the lower case, wherein the battery cell has first and second surfaces opposing each other, and wherein the first surface of the battery cell is closer to the bottom of the lower case than the second surface of the battery cell. The battery pack may further include i) a protection circuit board mounted on the second surface of the battery cell and placed in the interior space of the lower case, ii) an upper case formed over the top of the lower case and iii) a separator case formed between the protection circuit board and the upper case.

Abstract: Provided is a metal oxygen battery 1 including a positive electrode 2 having oxygen as an active material, a negative electrode 3 having metallic lithium as an active material, and an electrolyte layer 4 interposed between the positive electrode 2 and negative electrode 3. The positive electrode 2 contains oxygen storage material including mixed crystal of hexagonal composite metal oxide expressed by the general formula AxByOz (in which, A is one type of metal selected from a group of Y, Sc, La, Sr, Ba, Zr, Au, Ag, Pt, Pd, B is one type of metal selected from a group of Mn, Ti, Ru, Zr, Ni, Cr, and x=1, 1?y?2, 1?z?7, provided that a case where both A and B are Zr is excluded) and one or more non-hexagonal composite metal oxide expressed by the general formula AxByOz.

Abstract: A secondary battery is capable of fastening a positive electrode tab and a negative electrode tab to each other without performing welding. The secondary battery comprises an electrode assembly including a positive electrode plate, a negative electrode plate, and a separator interposed between the positive electrode plate and the negative electrode plate, a positive electrode tab and a negative electrode tab coupled to the positive electrode plate and the negative electrode plate, respectively, a housing accommodating the electrode assembly and having one side open, a plate sealing up the open part of the housing, a fastening unit formed so as to protrude from the plate in a non-penetrating structure, and a first tab terminal inserted into the fastening unit via the positive electrode tab so as to electrically couple the positive electrode tab and the plate to each other.

Abstract: Disclosed is a lithium secondary battery, which is low in capacity loss after overdischarge, having excellent capacity restorability after overdischarge and shows an effect of preventing a battery from swelling at a high temperature.

Abstract: To provide a lithium secondary battery which has high capacity while maintaining excellent charge-discharge characteristic, and to provide a cathode of the lithium secondary battery and a plate-like particle for cathode active material to be contained in the cathode. The plate-like particle of cathode active material for a lithium secondary battery of the present invention has a layered rock salt structure, a thickness of 5 ?m or more and less than 30 ?m, 2 or less of [003]/[104] which is a ratio of intensity of X-ray diffraction by the (003) plane to intensity of X-ray diffraction by the (104) plane, a mean pore size of 0.1 to 5 ?m, and a voidage of 3% or more and less than 15%.

Abstract: A system and method for redistribution of the flow of fuel under faulted conditions in a fuel cell system is disclosed. The fuel cell system includes a fuel cell stack; a fuel tank for storing fuel; fuel injectors that sequentially supply fuel from the fuel tank to the fuel cell stack; and a controller for determining whether a fault condition exists in one of the fuel injectors. If a fault condition exists in the first injector, the controller is capable of redistributing the flow of fuel from a first injector to a second injector.

Abstract: The present invention provides a cylindrical lithium-ion secondary battery. The lithium-ion battery of the present invention has a structure in which the value of B/A is optimized, where the distance between an electrode pole to which strip-form lead pieces are welded, the lead pieces being formed intermittently in the winding direction, which is the longitudinal direction of the belt-like electrodes, and the inner wall of the battery can is represented by A, and the distance between the electrode pole and the wound electrode group is represented by B, in order to secure an exhaust passage for the gas generated upon occurrence of an abnormality in the battery.

Abstract: A battery pack is constructed with at least two battery cells that are arranged in parallel to each other and provided with surfaces facing each other, and a spacer structure interposed between the facing surfaces of the battery cells. A through-hole is formed in an interior portion of the spacer structure and corresponds to a portion where thicknesses of the battery cells are increased when the battery cells are swollen. Therefore, the facing battery cells do not interfere with each other even if the thickness of the battery cell is changed due to swelling of the middle portion thereof when the battery cells are repeatedly charged/discharged in the case where at least two battery cells are included.

Abstract: The invention relates to a separator filled with an electrolyte composition. The separator has a ceramic surface and the electrolyte composition comprises an ionic fluid. Filling with the electrolyte composition can take place, for example, by inserting the separator into a battery, e.g. into a lithium ion battery, which is filled with a corresponding electrolyte composition.

Abstract: In one embodiment, a metal oxygen battery is provided. The metal oxygen battery includes a battery housing including a first compartment and a second compartment. The first compartment includes a first electrode and an oxygen storage material in communication with the first electrode. The second compartment includes a second electrode and the second electrode includes a metal material (M). In another embodiment, the oxygen storage material is configured as a number of particles disposed within the first electrode. In certain instances, at least a portion of the number of particles are each contained within a selective transport member. In certain other instances, the selective transport member is oxygen permeable and electrolyte impermeable.

Abstract: To provide a technique for simply and easily producing a high-purity difluorophosphate and provide a production process of an electrolytic solution using the obtained difluorophosphate, an electrolytic solution and a secondary battery. A process for producing a difluorophosphate, comprising the following step (1) or (2): (1) reacting (A) at least one member selected from the group consisting of oxoacids, oxoacid anhydrides and oxyhalides of phosphorus with (B) a hexafluorophosphate in the presence of hydrogen fluoride, or (2) reacting at least one halide selected from the group consisting of alkali metal halides, alkaline earth metal halides, aluminum halides and onium halides with difluorophosphoric acid in the presence of a hexafluorophosphate. Also, a nonaqueous electrolytic solution containing the obtained difluorophosphate, and a nonaqueous electrolytic secondary battery containing the nonaqueous electrolytic solution.

Abstract: The invention relates to microporous membranes having at least two layers, a first layer comprising polymethylpentene and a second layer which comprises a polymer and has a composition that is not substantially the same as that of the first layer. The invention also relates to methods for making such membranes and the use of such membranes as battery separator film in, e.g., lithium ion batteries.

Abstract: A secondary battery having a current interrupt device (CID) between a negative current collecting plate and a case of the secondary battery. The secondary battery includes: an electrode assembly including a positive electrode, a separator, and a negative electrode; a case housing the electrode assembly; a cap assembly coupled to the case for sealing the case; a positive current collecting plate connected to the positive electrode and the cap assembly; an insulator in the case adjacent an end plate of the case; and a negative current collecting plate connected to the negative electrode and the end plate of the case, the end plate being curved convexly toward an inner cavity of the case.

Abstract: An anode active material for a lithium secondary battery includes a silicon alloy that includes silicon and at least one kind of metal other than silicon, the silicon alloy allowing alloying with lithium. A volume of an inactive region in the silicon alloy, which is not reacted with lithium, is 50 to 75% of the entire volume of an active material. The anode active material has a large capacity in comparison to carbon-based anode active materials, and also ensures small volume expansion and high capacity retention ratio after charging/discharging, resulting in excellent cycle characteristics.

Abstract: Provided is a method of manufacturing a nonaqueous electrolyte secondary battery. The method includes: forming an electrode assembly including a positive electrode plate and a negative electrode plate disposed with a separator interposed therebetween; arranging the electrode assembly and a nonaqueous electrolyte containing LiBOB (lithium bis(oxalato)borate) and LiPF2O2 (lithium difluorophosphate) inside an outer body; and configuring the concentration of the LiBOB to be larger than that of the LiPF2O2 and to be smaller than that of the LiPF2O2 by charge and discharge.

Abstract: In a battery pack according to the embodiment of the present invention, when coupling bosses of a second case are coupled to coupling holes of a first case, the first case and the second case can be easily coupled to each other by reducing the thicknesses of some portions of a rib having the coupling holes before the coupling bosses are coupled to the coupling holes. In addition, the first case and the second case can be smoothly coupled to each other at the initial step of coupling the coupling bosses and the coupling holes to each other by opening the outermost portion of the first case facing the top end of the rib having the coupling holes.

Abstract: A battery module and a related method are provided. The module includes battery cells having electrical terminals extending from battery portions. The module further includes an interconnect board having apertures for receiving the electrical terminals therethrough, and an elastomeric layer having apertures extending therethrough. The elastomeric layer is disposed proximate to the interconnect board such that the electrical terminals extend through the apertures of the interconnect board and further extend through the apertures of the elastomeric layer. The module further includes a potting compound disposed on the elastomeric layer such that the layer prevents the potting compound from contacting the battery portions.

Abstract: An anode active material including: a core having a molybdenum-based material; and a coating layer formed on at least a portion of a surface of the core, wherein the coating layer comprises at least one material selected from the group consisting of molybdenum oxynitride and molybdenum nitride, a method of preparing the same, and an anode and a lithium battery.

Abstract: One embodiment of the invention includes a product comprising: a solid polyelectrolyte membrane having a first face and an opposite second face; a first catalyst layer overlying the first face of the membrane; a first microporous layer overlying the first catalyst layer, and wherein the first microporous layer includes a plurality of microchannels formed therein open toward the first catalyst layer; and wherein each of the microchannels of the first microporous layer are defined by a surface that is free of cracks.

Abstract: A flow battery includes a first liquid-porous electrode, a second liquid-porous electrode spaced apart from the first liquid-porous electrode, and an ion-exchange membrane arranged between the first liquid-porous electrode and the second liquid-porous electrode. First and second flow fields are adjacent to the respective first liquid-porous electrode and second liquid-porous electrode. Each of the flow fields includes first channels having at least partially blocked outlets and second channels having at least partially blocked inlets. The second channels are interdigitated with the first channels. The flow fields provide a configuration and method of operation for relatively thin electrodes with moderate pressure drops and forced convective flow through the liquid-porous electrodes.