Abstract: A sulfide solid electrolyte for all-solid secondary batteries, a method of preparing the same, and an all-solid secondary battery, the sulfide solid electrolyte including lithium, phosphorus, sulfur, and a halogen, wherein: the sulfide solid electrolyte has an argyrodite-type crystal structure, a ratio (I(29.0)/I(30.0) ratio) of a peak intensity at a 2? of 29±0.1° to a peak intensity at a 2? of 30±0.1° is 0.06 or less, the peak intensities being obtained by X-ray diffraction analysis of the sulfide solid electrolyte, and a ratio (I(27.1)/I(30.0) ratio) of a peak intensity at a 2? of 27.1±0.1° to a peak intensity at a 2? of 30±0.1° is 0.06 or less, the peak intensities being obtained by X-ray diffraction analysis of the sulfide solid electrolyte.

Abstract: An all solid secondary battery includes an electrode assembly, and a case accommodating the electrode assembly, wherein the electrode assembly includes a unit cell portion, an anode current collector portion, and a cathode current collector portion, the case includes first and second cases insulated from each other, the anode current collector portion contacts the first case, and the cathode current collector portion contacts the second case.

Abstract: Provided is a battery pack including: a plurality of battery cells; a first conductive plate arranged over the plurality of battery cells and electrically connecting the plurality of battery cells; a second conductive plate arranged over the first conductive plate to overlap a portion of the first conductive plate and electrically connecting the plurality of battery cells; and an insulating layer arranged between the first conductive plate and the second conductive plate.

Abstract: Provided is a battery pack including; a plurality of battery cells; a first conductive plate arranged over the plurality of battery cells and electrically connecting the plurality of battery cells; a second conductive plate arranged over the first conductive plate to overlap a portion of the first conductive plate and electrically connecting the plurality of battery cells; and an insulating layer arranged between the first conductive plate and the second conductive plate.

Abstract: There is provided a battery pack with improved stability. The battery pack includes a plurality of bare cells including electrode units and arranged in a direction, a holder case configured to accommodate the plurality of bare cells, and a connection tab including a body unit electrically connected to the plurality of bare cells, a slit unit positioned in each of the electrode units of the plurality of bare cells, and at least one welding unit positioned to be adjacent to the slit unit and welded to the electrode unit of the bare cell. The slit unit includes first and second slits separated from each other by a certain distance, first and second bridges respectively provided between ends of the first and second slits, and a welding slit that crosses one point of each of the first and second slits. In the battery pack, one of the first and second bridges is formed to be stepped so that it is possible to rapidly and easily block flow of a current when over-charge or over-discharge occurs.

Abstract: A battery pack which includes at least one surface and a plurality of cell holders inclined with respect to at least one surface. The cell holders have a size sufficient to hold respective battery cells inclined with respect to the at least one surface.

Abstract: A wireless charging apparatus includes a transmitter, and first receiver, and a second receiver. The transmitter wirelessly transmits first power from a charger. The first receiver amplifies first current corresponding to the first power to second current. The second receiver wirelessly receives second power corresponding to the second current. The second power charges a battery of an electronic device, and the first and second receivers are coupled to the electronic device.

Abstract: There is provided a battery pack with improved stability. The battery pack includes a plurality of bare cells including electrode units and arranged in a direction, a holder case configured to accommodate the plurality of bare cells, and a connection tab including a body unit electrically connected to the plurality of bare cells, a slit unit positioned in each of the electrode units of the plurality of bare cells, and at least one welding unit positioned to be adjacent to the slit unit and welded to the electrode unit of the bare cell. The slit unit includes first and second slits separated from each other by a certain distance, first and second bridges respectively provided between ends of the first and second slits, and a welding slit that crosses one point of each of the first and second slits. In the battery pack, one of the first and second bridges is formed to be stepped so that it is possible to rapidly and easily block flow of a current when over-charge or over-discharge occurs.

Abstract: A wireless charging apparatus includes a transmitter, and first receiver, and a second receiver. The transmitter wirelessly transmits first power from a charger. The first receiver amplifies first current corresponding to the first power to second current. The second receiver wirelessly receives second power corresponding to the second current. The second power charges a battery of an electronic device, and the first and second receivers are coupled to the electronic device.

Abstract: A battery pack includes: a plurality of batteries; a circuit board electrically connected to the batteries; a cell guide between adjacent ones of the batteries, the cell guide including a first cell guide and a second cell guide, and the first cell guide and the second cell guide being disposed perpendicular to each other; and a case accommodating the plurality of batteries and the circuit board.

Abstract: A battery pack that can prevent an electrical short of a lead tab that electrically connects a battery cell and a protective circuit module. The battery pack includes a plurality of battery cells, a protective circuit module electrically connected to the battery cells, a case including a lower case in which the battery cells and the protective circuit module are mounted, and an upper case coupled to the lower case, a cell tab electrically connected to electrode terminals of the battery cells and extending to the outside of the case, a protective circuit electrically connected to the protective circuit module and extending to the outside of the case, and a connection tab formed at the outside of the case and electrically connecting the cell tab and the protective circuit tab.

Abstract: A battery pack includes: a plurality of batteries; a circuit board electrically connected to the batteries; a cell guide between adjacent ones of the batteries, the cell guide including a first cell guide and a second cell guide, and the first cell guide and the second cell guide being disposed perpendicular to each other; and a case accommodating the plurality of batteries and the circuit board.

Abstract: A battery pack that can prevent an electrical short of a lead tab that electrically connects a battery cell and a protective circuit module. The battery pack includes a plurality of battery cells, a protective circuit module electrically connected to the battery cells, a case including a lower case in which the battery cells and the protective circuit module are mounted, and an upper case coupled to the lower case, a cell tab electrically connected to electrode terminals of the battery cells and extending to the outside of the case, a protective circuit electrically connected to the protective circuit module and extending to the outside of the case, and a connection tab formed at the outside of the case and electrically connecting the cell tab and the protective circuit tab.