Abstract: This application relates to the field of energy storage components, and in particular, to a protective plate, a battery unit assembly, a battery module group, and a vehicle. The protective plate is provided with a guide groove. The protective plate is configured to shield an explosion-proof valve of a battery cell. The guide groove is configured to be disposed corresponding to the explosion-proof valve, and is configured to guide a flow direction of a flame ejected from the explosion-proof valve. In this application, the guide groove is disposed on the protective plate to guide the flame to a direction away from passengers, thereby protecting the passengers from injury.

Abstract: A pre-lithiated silicon-based anode includes a silicon-based anode, lithium disposed on a surface or in an interior of the silicon-based anode, and a protective coating on the surface of the silicon-based anode. The pre-lithiated silicon-based anode allows subsequent processing to be performed safely in the atmosphere.

Abstract: The invention features redox flow batteries and compound useful therein as negolytes or posolytes. The batteries and compounds are advantageous in terms of being useable in water solutions at neutral pH and have extremely high capacity retention. Suitable negolytes are diquaternized bipyridines, suitable posolytes are water-soluble ferrocene derivatives.

Abstract: A positive electrode includes at least a positive electrode current collector and a positive electrode active material layer. The positive electrode active material layer is disposed on a surface of the positive electrode current collector. The positive electrode current collector includes an aluminum foil and an aluminum hydrated oxide film. The aluminum hydrated oxide film covers a surface of the aluminum foil. The aluminum hydrated oxide film has a thickness not smaller than 50 nm and not greater than 500 nm. The aluminum hydrated oxide film contains a plurality of types of aluminum hydrated oxides. The ratio of boehmite to the plurality of types of aluminum hydrated oxides is not lower than 20 mol % and not higher than 80 mol %.

Abstract: Each cell forming a battery stack has a discharge valve configured to discharge gas in the inside to the outside when an internal pressure increases. A case houses the battery stack. A plate member is provided between each discharge valve and an upper case. The plate member is arranged to overlap with each discharge valve when the battery stack and the plate member are planarly viewed from above.

Abstract: An electrochemical cell includes a cylindrical housing that encloses an interior space having a first end face and a second end face that are interconnected by an annular shell, and a positive and a negative electrode are arranged in the interior of the housing, wherein the negative electrode is electrically connected, either directly or via a separate conductor, to the first end face to constitute a negative pole, and the positive electrode is electrically connected, either directly or via a separate conductor, to the second end face to constitute a positive pole, and a contact lug is fastened to the first or second end face of the housing.

Abstract: This disclosure details exemplary battery pack designs for use in electrified vehicles. An exemplary battery pack may include a multi-piece enclosure assembly and an urethane based adhesive. The urethane based adhesive may function as both a fastener for securing the enclosure assembly components together and as a seal for blocking the ingress of moisture into the interior of the battery pack. Associated battery pack assembly methods are also disclosed.

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 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 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 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.