Abstract: A battery pack includes a plurality of battery modules including a first battery module and a second battery module; and a busbar electrically connecting the first battery module and the second battery module, wherein the first battery module or the second battery module includes a vent hole in a portion corresponding to a portion of the busbar.

Abstract: A battery module includes a battery cell stack in which a plurality of battery cells is stacked; a module frame configured to accommodate the battery cell stack and including a plurality of venting holes in at least one surface; end plates disposed at both sides of the battery cell stack; and an anti-inflammatory cover configured to cover the plurality of venting holes.

Abstract: A battery module has battery cells and a housing. The housing includes a first end plate, a second end plate, a first side plate, and a second side plate. The battery cells are disposed between the first end plate, the second end plate, the first side plate, and the second side plate. A cover is disposed at least partially over the first end plate, the second end plate, the first side plate, and the second side plate. A pressure release vent couples to the housing and includes an interior surface that defines a plurality of sections that are configured to dislodge from the pressure release vent based on a pressure within the battery module exceeding a pressure threshold. The individual sections pivot about segments during rupture of the pressure release vent.

Abstract: A power supply device includes a plurality of batteries and an exterior case. Each of the plurality of batteries includes an exhaust valve configured to open if an internal pressure becomes higher than a predetermined pressure. The exterior case accommodates the plurality of batteries and includes a collision-enhancing gas-releasing path for releasing a gas discharged through the exhaust valve to the outside of the exterior case. The collision-enhancing releasing path includes a first collision plate and a second collision plate configured such the gas collides against the first collision plate and the second collision plate and is then released to the outside of the exterior case. The first collision plate is configured to reflect a flow direction of the gas by collision of the gas against a surface of the first collision plate. The second collision plate faces the first collision plate.

Abstract: A hybrid material housing for a battery reduces or minimizes thermal runaway propagation. The housing includes a composite structure for the battery and optionally includes a polymeric matrix selected from the group consisting of: epoxy, phenolic resin, polyester, vinyl ester, and combinations thereof and a reinforcing material selected from the group consisting of: glass fibers, carbon fibers, basalt fibers, aromatic polyamide KEVLAR® fibers, and combinations thereof. A metal layer is disposed along an exterior surface of the composite structure that comprises aluminum, steel, stainless steel, alloys, and combinations thereof. In a first mode, the metal layer contacts the composite structure and in a second mode after exposure to a thermal load of greater than or equal to about 500° C., the metal layer at least partially delaminates from the exterior surface and forms insulating air gaps to define a thermal barrier. Methods of forming the hybrid material housings are also provided.

Abstract: An all-solid-state battery includes an electrode assembly including a solid electrolyte layer, a first battery unit having a first negative electrode and a first positive electrode, and a second battery unit having a second negative electrode and a second positive electrode, in which the first negative and positive electrodes and the second negative and positive electrodes are respectively stacked with the solid electrolyte layer interposed therebetween. The all-solid-state battery further includes a first external electrode; a second external electrode; a third external electrode; and a fourth external electrode, in which the second battery unit is disposed to be adjacent to at least one the fifth surface or the sixth surface of the electrode assembly, and the first battery unit is located further inside than the second battery unit in the third direction.

Abstract: Disclosed are a cathode active material for a lithium secondary battery and a lithium secondary battery including the same. The cathode active material includes a secondary particle in which a plurality of primary particles are agglomerated, wherein the secondary particle has a predetermined arrangement structure in which (003) surface of primary particles are aligned to be in a vertical direction with respect to a tangent line at a point (P) at which the (003) surface of the primary particles meet a surface of the secondary particle.

Abstract: An example mobile computing device includes: a battery module including a battery cell having a conductive casing; a coupler; and a controller coupled to the coupler, the controller configured to communicate a broadcast signal to the coupler, the coupler radiating the broadcast signal to the conductive casing of the battery module and causing the conductive casing of the battery module to transmit the broadcast signal from the mobile device.

Abstract: A flow battery system with a cathode cell including a first electrode, an anode cell includes a second electrode, and a membrane between the two cells. A first electrolyte tank includes a catholyte. A second electrolyte tank includes an anolyte. The system includes two rebalancing cells. A first rebalancing cell is in fluid communication between the cathode cell and the first electrolyte tank and is configured to reduce active species from the catholyte. The second rebalancing cell is in fluid communication with the first electrolyte tank and the second electrolyte tank such that the first electrolyte tank and the second electrolyte tank are in direct fluid communication. The second rebalancing cell is configured to reduce active species from the catholyte and the reduced catholyte may be combined directly with the anolyte. The second rebalancing cell may be a chemical reactor, a catalytic reactor, or an electrochemical reactor.

Abstract: To achieve both formability and heat insulating properties, separator according to an aspect of the present invention insulates adjacent battery cells. Separator includes heat insulation sheet including a fiber material and a heat insulation material including higher heat insulating properties than the fiber material, and formed member including higher shape stability than the heat insulation sheet. This enables shape of heat insulation sheet including high flexibility to be maintained using formed member formed into a predetermined shape.

Abstract: A secondary battery includes a Z stack electrode assembly including a separator bent in a Z shape and including a plurality of bent areas, a first electrode plate on a lower portion of each of the bent areas, and a second electrode plate on an upper portion of each of the bent areas, and an exterior portion configured to accommodate the Z stack electrode assembly, and an outermost end area of the separator is bent to be thermally fused to a bent area of the plurality of bent areas of the separator.

Abstract: Provided is a negative electrode material of a lithium ion secondary battery. The negative electrode material includes a carbon coating layer and a core layer. The core layer includes lithium polysilicate and silicon oxide, and silicon is uniformly embedded in the lithium polysilicate and/or in the silicon oxide. The negative electrode material has high first coulomb efficiency, long cycle performance, excellent rate performance and high safety.

Abstract: An electrochemical device, including a cathode; an anode; and an electrolyte. The anode has an anode mixture layer on an anode current collector, the anode mixture layer includes a carbon material as an anode active material, and at least a part of a surface of the anode mixture layer or a surface of the carbon material comprises a polymer compound having Si—C and Si—O bonds. The electrochemical device has improved cycle performance and storage performance.

Abstract: Provided is a cathode active material including a core including a compound represented by Formula 1; and a coating layer including a phosphorus-containing compound disposed on a surface of the core: Li1-xNaxM1?M21-?O2??Formula 1 In Formula 1, x, M1, M2, and ? are the same as defined in relation to the present specification.

Abstract: A bicyclophosphate-modified ionic liquid compound, the synthesis thereof, an electrochemical electrolyte containing a bicyclophosphate-modified ionic liquid compound, and energy storage device containing the electrolyte are disclosed.

Abstract: An ejector has a two-stage nozzle structure. The ejector is installed on a fuel cell recirculation line to supply new hydrogen and a recirculation gas. The ejector includes a housing having a first orifice defined therein and a poppet that is disposed in the housing and having a second orifice defined therein. A damage prevention member is disposed on a surface of the poppet to contact an inner surface of the housing, in which the damage prevention member contacts or is separated from the inner surface of the housing based on a pressure applied to the poppet.

Abstract: Presented are thermal management systems with passive quenching sacks for cooling battery assemblies, methods for making/using such systems, and vehicles equipped with such systems. A passive thermal management (PTM) system is presented for cooling a battery assembly, such as a traction battery pack with a battery case containing stacked battery cells. The PTM system includes a fluid container that mounts inside the battery assembly, interposed between the battery case and battery cells. The fluid container stows therein a dielectric coolant fluid and has multiple fluid ports that fluidly connect to the battery cells to dispense thereto the coolant fluid. Thermomechanical plugs, such as wax, film, or smart-material barriers, seal the fluid container ports and passively open (e.g., melt, bend, disintegrate, expand, etc.) at a predefined temperature to thereby unseal the fluid ports such that the coolant fluid is fed from the fluid container into the battery cells.

Abstract: A process for producing a coated transition metal oxide involves subjecting a transition metal oxide and a pyrogenically produced lithium titanate and/or pyrogenically produced lithium aluminate to dry mixing. A coated transition metal oxide is obtainable by this process; and cathode for a lithium ion battery and a lithium ion battery containing such coated particles is useful.

Abstract: A cathode includes a cathode current collector; and a cathode active material layer disposed on a surface of the cathode current collector. The cathode active material layer includes a first particle and a second particle, the first particle including a secondary particle composed of a third particle, the third particle being a primary particle, the first particle having an average particle size of 5 ?m to 20 ?m, the third particle having an average particle size of 200 nm to 700 nm, the second particle including a fourth particle and/or a secondary particle composed of the fourth particle, the fourth particle being a primary particle, the second particle having an average particle size of 3 ?m to 5 ?m, the fourth particle having an average particle size of 800 nm to 5 ?m.

Abstract: A method comprising providing, on a substrate, a stack for an energy storage device, the stack comprising a first electrode layer, a second electrode layer, and an electrolyte layer between the first electrode layer and the second electrode layer. A groove is formed at least through the second electrode layer and the electrolyte layer such that the groove is wider in the second electrode layer than in the electrolyte layer. An electrically insulating material is provided in the groove. An electrically conductive material is provided in the groove, on the electrically insulating material.