Abstract: The purpose of one embodiment of the present invention is to provide a lithium ion secondary battery which has improved cycle characteristics and the negative electrode of which comprises a silicon oxide. The present invention relates to a lithium ion secondary battery comprising a silicon oxide and an electrolyte solution comprising a fluorinated acid anhydride.

Abstract: The present disclosure provides an electrode assembly and a secondary battery. The electrode assembly includes a first electrode plate, a second electrode plate and a separator. The first electrode plate, the second electrode plate and the separator are wound to a flat structure, and the flat structure comprises a main region and corner regions, the corner regions are provided at two ends of the main region along a width direction of the main region. The first electrode plate and the second electrode plate each are wound to turns. A gap is provided between two adjacent turns of the first electrode plate, the gap includes a first gap and a second gap. The first gap corresponds to the corner region in position, the second gap corresponds to the main region in position, and a dimension of the first gap is larger than a dimension of the second gap.

Abstract: To provide a solid-state battery in which the capacity and voltage can be optionally adjusted in a single battery and the installation space for the battery can be reduced. A solid-state battery includes a plurality of electrode layers, and a solid electrolyte layer disposed between the electrode layers. The electrode layers includes positive electrode portion formed by filling a current collector including a metal porous body with a positive electrode material mixture, negative electrode portion formed by filling a current collector including a metal porous body with a negative electrode material mixture, and an isolation portion formed between the positive electrode portion and the negative electrode portion. Between the plurality of electrode layers disposed adjacent to each other, the positive electrode portion and the negative electrode portion are disposed so as to face each other, and the isolation portions are disposed so as to face each other.

Abstract: The present invention provides a secondary battery including an insulating plate which enables easy gas discharge and is not broken at high temperature. For this purpose, disclosed is a secondary battery comprising: a case including a space therein through an opening; at least one electrode assembly inserted into the space of the case; an insulating plate formed at an upper part of the electrode assembly; and a cap plate which is coupled to the opening of the case and includes a vent, at least one region of which has a thinner thickness than other regions, wherein the insulating plate includes a plurality of gas discharge holes disposed at a region corresponding to the vent.

Abstract: A battery module includes a cell assembly having a plurality of pouch-type battery cells whose wide surfaces stand to be stacked in one direction. The battery module includes a pair of buffer pads disposed at both side surfaces of the cell assembly, a top plate and a bottom plate configured to cover a top portion and a bottom portion of the cell assembly, respectively, and a pair of side plates coupled to both ends of the top plate and the bottom plate by clinching or fitting so that the pair of buffer pads and the cell assembly are interposed there between.

Abstract: According to one embodiment, there is provided a secondary battery including a negative electrode, a positive electrode, a first electrolyte, a second electrolyte, and a hydrogel electrolyte. The first electrolyte is in contact with at least a part of the negative electrode. The second electrolyte is in contact with at least a part of the positive electrode. The hydrogel electrolyte includes a gel having a chemically crosslinked structure. A first electrolyte composition of the first electrolyte is different from a second electrolyte composition of the second electrolyte. At least one of the first electrolyte and the second electrolyte includes an aqueous solvent, the aqueous solvent including water. At least a part of at least one of the negative electrode and the positive electrode overlaps at least a part of the hydrogel electrolyte.

Abstract: A safety element is provided to a lead connected part of a battery module in the event of overcharge, to improve safety of the battery module. The battery module according to the present disclosure includes two or more battery cells, and the battery module includes a current shut-off battery cell which electrically connects adjacent first and second battery cells, and when overcharge occurs, ruptures to disconnect the electrical connection.

Abstract: A Li—S battery cell comprising a Sulphur-containing cathode, a Lithium-containing anode, a separator in between the cathode and anode with an electrolyte on both sides of the separator filling interspaces between the anode and the cathode. The separator contains electrically conducting carbon and prevents polysulphide intermediates from migrating from the Sulphur-containing cathode to the Lithium anode.

Abstract: A zinc bromine electrochemical cell comprises an anode-side subassembly, an insulating porous separator, and a cathode-side subassembly. The anode-side subassembly comprises an anode current collector, an anode sheet, and an anode insulating net. The cathode-side subassembly comprises a cathode insulating mesh, a cathode graphite felt, and a cathode current collector. The zinc bromine electrochemical cell is rollable, foldable, or stackable.

Abstract: The present invention relates to a positive electrode for a secondary battery to improve stability during overcharge, and a lithium secondary battery including the same, and particularly, to a positive electrode for a secondary battery including a positive electrode active material layer formed on a positive electrode collector, wherein the positive electrode active material layer has a double-layer structure which includes a first positive electrode active material layer formed on the positive electrode collector and a second positive electrode active material layer formed on the first positive electrode active material layer, the first positive electrode active material layer includes a first positive electrode active material, a conductive agent, and a volume expansion resin in which volume expansion occurs at a high temperature during overcharge, and the second positive electrode active material layer includes a second positive electrode active material, and a lithium secondary battery including the same.

Abstract: A battery pack having an interlock structure includes a plurality of battery modules, a case that includes a case main body accommodating the plurality of battery modules and a case cover covering the case main body, and a bus bar unit that electrically conducts two battery modules among the plurality of battery modules. The case cover includes a cover connecting portion connected to an accommodation item accommodated in the case or the case main body, and the bus bar unit includes a shielding portion that blocks the cover connecting portion from being removed from the accommodation item or the case main body.

Abstract: Disclosed is a secondary battery comprising: an electrode assembly in which a first electrode plate, a second electrode plate, and a separator are rolled up; and a support plate which is coupled to one end surface of the electrode assembly where the rolled first electrode plate, second electrode plate, and separator are exposed, so as to support the electrode assembly. A secondary battery according to an embodiment of the present invention comprises a support plate coupled to the lower end of an electrode assembly, whereby, when the secondary battery falls, movements of the electrode assembly can be prevented, and deformation of the electrode assembly due to an external impact can be suppressed.

Abstract: An serviceable battery pack and assembly method may include a battery pack having a stanchion extending through a wall of the battery pack, a first battery pack seal between the stanchion and the wall of the battery pack, attachment of the battery pack at the exterior of a floor pan of a vehicle at the stanchion, and a second battery pack seal between the exterior of the floor pan and the wall of the battery pack surrounding the stanchion.

Abstract: A method and apparatus for forming metal electrode structures, more specifically lithium-containing anodes, high performance electrochemical devices, such as primary and secondary electrochemical devices, including the aforementioned lithium-containing electrodes. In one implementation, the method comprises forming a lithium metal film on a current collector. The current collector comprises copper and/or stainless steel. The method further comprises forming a protective film stack on the lithium metal film, comprising forming a first protective film on the lithium metal film. The first protective film is selected from a bismuth chalcogenide film, a copper chalcogenide film, a tin chalcogenide film, a gallium chalcogenide film, a germanium chalcogenide film, an indium chalcogenide film, a silver chalcogenide film, a dielectric film, a lithium fluoride film, or a combination thereof.

Abstract: An electrode for a solid state battery is provided. The electrode active material layer of the electrode shows improved mechanical properties, such as elasticity or rigidity, of the electrode layer through the crosslinking of a binder resin. Thus, it is possible to inhibit or reduce the effect of swelling and/or shrinking of the electrode active material during charging/discharging. Therefore, the interfacial adhesion between the electrode active material layer and an electrolyte layer and the interfacial adhesion between the electrode active material layer and a current collector are maintained to a high level to provide a solid state battery having excellent cycle characteristics.

Abstract: One of the objects of the present invention is to suppress mixing of a first layer and a second layer while forming the second layer before drying the first layer when manufacturing the electrode for the secondary battery in which the first layer and the second layer are laminated on the current collector. A method for manufacturing an electrode used as a positive electrode and a negative electrode of a secondary battery according to the present invention comprises applying a first layer slurry to a surface of a current collector, applying a second layer slurry on the first layer slurry before the first layer slurry is dried, and drying the first layer slurry and the second layer slurry after applying the first layer slurry and the second layer slurry to obtain a laminated structure in which a first layer and a second layer are laminated in this order on the current collector.

Abstract: The present invention comprises: an electrode assembly in which a separator is interposed in between a first electrode and a second electrode; a case for accommodating the electrode assembly; a cap plate for sealing an opening at the upper end of the case, wherein a first terminal electrically connected to the first electrode of the electrode assembly is integrally formed with the cap plate; at least one stepped portion protruding upward from the cap plate; and a plate terminal arranged on the exterior of the cap plate, wherein the plate terminal is provided with, on a bottom part thereof, a recessed groove having a size and a depth corresponding to the size and the height of the stepped portion. A secondary battery, according to one embodiment of the present invention, is provided with the protruding stepped portion on the cap plate so that the terminal can be fixed so as to prevent shifting to the left or to the right.

Abstract: The present disclosure provides a non-aqueous electrolyte secondary battery having a stable open-circuit voltage. An electrode for a non-aqueous electrolyte secondary battery according to one embodiment includes a belt-like current collector, a mixture layer formed on each surface of the current collector, and a lead bonded to an exposed portion of the current collector where the surfaces of the current collector are exposed, the lead extending from one end of the current collector, the one end and another end constituting both ends of the current collector in the width direction. In an electrode for a non-aqueous electrolyte secondary battery according to one embodiment, a mixture layer is formed on at least one surface of a current collector in the width direction of the current collector and adjacent to an exposed portion on one end side.

Abstract: A composite membrane with nanostructured inorganic and organic phases is applied as an ion-selective layer to prove processability, prevent dendrite shorting, and increase power output of lithium-metal anodes through better Li-ion conductivity. Nanoconfinement, as opposed to macroscale confinement, is known to dramatically alter the properties of bulk materials. Control over a ceramic's size, shape, and properties is achieved with polymer templates. This is a new composition of matter and unique approach to composite membrane design.

Abstract: Provided is a battery module in which a heat radiation effect and manufacturing efficiency are effectively improved. The battery module includes a cell assembly including at least one unit body, each unit body including at least two secondary batteries stacked in a first direction. Each unit body includes an integrated unit sheet folded to surround a top portion, a left surface, a right surface, and a bottom portion of the at least two secondary batteries, opposite ends of a top portion of the integrated unit sheet being positioned to contact each other on any one of the top portion, the left surface, the right surface, and the bottom portion of the at least two secondary batteries, and an electric insulating material coated on at least a part of a perimeter portion of the integrated unit sheet.