Abstract: A secondary battery with a positive electrode plate having a metallic positive electrode core body and positive electrode active material layers formed on both surfaces of the positive electrode core body. The positive electrode core body has an active material layer-free region in which the positive electrode active material layers are not formed on the surface of the positive electrode core body, wherein a first protrusion protruding in the thickness direction of the positive electrode core body from one surface of the positive electrode core body is formed at the end of the active material layer-free region, positive electrode protection layers are formed in a portion adjacent to the positive electrode active material layers on one surface of the positive electrode core body in the active material layer-free region, and the protrusion height T1 of the first protrusion is less than the thickness T2 of the positive electrode protection layer.

Abstract: A temperature measurement device includes a heat transfer member including a temperature measuring portion having a flat shape and extending laterally and a heat transfer portion that extends continuously from the temperature measuring portion and transfers heat of the temperature measuring portion, a clamping member that generates a clamping force with the temperature measuring portion, a temperature sensor that is fixed while being in contact with the heat transfer portion, and a resin member that covers and holds the heat transfer portion and the temperature sensor.

Abstract: The invention provides a battery module with cooling cartridge and battery system thereof. The cooling cartridge is utilized to be disposed between the battery units stacked in a single axis. The supporting portion of the cooling cartridge is directly contacted in a large area to the current collecting sheet of the battery unit. And the wing portions, extended from the two sides of the supporting portion, are directly contacted to the inner sidewalls of the metal housing. Therefore, a large-area heat dissipating path for the battery cell is provided, and the performance and stability of the battery cell are greatly improved.

Abstract: The present invention relates to a positive electrode active material for non-aqueous electrolyte secondary battery, including lithium-nickel composite oxide particles having a layer structure of hexagonal system; and a lithium tungstate coating film disposed on a surface of secondary particles of the lithium-nickel composite oxide particles, wherein the positive electrode active material for non-aqueous electrolyte secondary battery includes, as metallic elements, lithium (Li), nickel (Ni), cobalt (Co), element M (M) which is at least one element selected from Mn, V, Mg, Mo, Nb, Ti, Ca, Cr, Zr, Ta, and Al, and tungsten (W), wherein a ratio of amount of substance in the metallic elements contained is Li:Ni:Co:M:W=a:1-x-y:x:y:z, wherein 0.97?a?1.25, 0?x?0.35, 0?y?0.35, and 0.005?z?0.030.

Abstract: Provided is an electricity storage device having a high volumetric energy density and high reliability. The electricity storage device includes: an electrode assembly including first and second electrode plates and a separator interposed therebetween; an exterior housing that houses the electrode assembly; a lid that covers an opening of the exterior housing; and electrode terminals that are electrically connected to the electrode assembly and partially protrude from the lid to the outside. The lid has a liquid injection hole for injecting an electrolytic solution into the exterior housing. A tubular member extending from the lid toward the electrode assembly is provided between the outer surface of the lid and the electrode assembly so as to surround an opening of the liquid injection hole. A covering member connected to the tubular member and interposed between the liquid injection hole and the electrode assembly is provided.

Abstract: The secondary battery includes an electrode body that includes a positive electrode plate and a negative electrode plate, an outer body that has an opening and houses the electrode body, a sealing plate that seals the opening of the outer body, a positive electrode tab that is provided in the positive electrode plate, a positive electrode external terminal that is electrically connected to the positive electrode plate and attached to the sealing plate, and a positive electrode current collector and a second positive electrode current collector that electrically connect the positive electrode tab and the positive electrode external terminal. The first positive electrode current collector has a current collector protrusion. The second positive electrode current collector has a current collector opening. The current collector protrusion is positioned in the current collector opening. The current collector protrusion and the edge of the current collector opening are weld connected to each other.

Abstract: A method for recovering lithium battery slurry, the method comprising: pretreating lithium battery slurry, and then subjecting the pretreated lithium battery slurry to centrifugal spray drying to separate a solid phase and a solvent. A device for the recovery of lithium battery slurry is a centrifugal spray drying system, and comprises a spray chamber (100), a cyclone separator (200), a condenser (400), a condensate storage tank (500), and a rectification tower (600); the system improves upon original centrifugal spray drying devices, and is designed to combine the processes of centrifugal spray drying and NMP condensation recovery, such that NMP can be directly recovered after separation of positive electrode material and the NMP.

Abstract: Provided are a winding device and a winding apparatus. An inner shaft of the winding device is configured to clamp an electrode assembly; and an outer shaft of the winding device is configured to wind the electrode assembly. The winding device includes: a first slider and a first pusher, where the first slider may reciprocate in a first sliding slot in the first pusher in a first direction, and an extension direction of the first sliding slot is inclined from the first direction such that the first pusher drives a first inner shaft to reciprocate in a second direction, the second direction being perpendicular to the first direction; and a second slider and a second pusher, where the second slider may reciprocate in a second sliding slot in the second pusher in a third direction, and an extension direction of the second sliding slot is inclined from the third direction.

Abstract: A sealed battery including a battery case that includes a cylindrical exterior can having a bottom and an opening sealing body that closes an opening of the outer can; a gasket that is arranged between the exterior can and the opening sealing body; and an electrode body. The opening sealing body includes: a metal plate with an annular part to which an electrode lead is electrically connected, and a disconnecting part that is separated from the annular part when the inner pressure of the battery case exceeds a predetermined threshold; a valve body that is arranged further to the outside of the battery case than the metal plate; and an insulating plate that is arranged between the metal plate and the valve body. The insulating plate or the gasket is provided with an elastic deformation part that deforms in the direction of the valve body.

Abstract: An alkaline dry battery, including: a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and an alkaline electrolyte. The positive electrode includes a manganese dioxide, the negative electrode includes zinc and/or a zinc alloy, and the alkaline electrolyte includes at least one sulfonyl group-containing anion selected from the group consisting of a bis(perfluoroalkylsulfonyl)imide anion, a bis(fluorosulfonyl)imide anion, and a fluorosulfonate anion.

Abstract: A flow-field plate is provided for distributing a reactant to an electrode or a gas diffusion layer of a fuel cell, the flow-field plate having a gas inlet, and having a plurality of channels defining a flow field. A pressure gradient is present between the gas inlet and the flow field given a state of throughflow, which leads to an intake of exhaust gas flowing in the channels in the direction of the gas inlet. Furthermore, there is a water/gas separator which is fluidically connected to the gas inlet for separating liquid water and/or water vapor from a gas which is connected to the flow field in order to supply the gas separated in the water/gas separator to the flow field. A flow cross-section at the gas inlet or at the gas inlet region is smaller than the flow cross-section at or in the region of the water/gas separator.

Abstract: In an aspect, a Li-ion cell may comprise a densified electrode exhibiting an areal capacity loading of more than about 4 mAh/cm2. For example, the densified electrode may a first electrode part arranged on a current collector and a second electrode part on top of the first electrode part, the second electrode part of the at least one densified electrode having a higher porosity than the first electrode part of the at least one densified electrode. In some designs, the densified electrode may be fabricated by densifying electrode layers via a pressure roller while maintaining a contacting part of the pressure roller at a temperature that is less than a temperature of the second electrode part. In some designs, the applied pressure is a time-varying (e.g., frequency modulated) pressure. In some designs, a drying time for a slurry to produce the densified electrode may range from around 1-120 seconds.

Abstract: A vehicle body member includes a first cell portion including a first negative pole portion and a first positive pole portion, with one or more first via holes penetrating the first negative pole portion and the first positive pole portion, a second cell portion including a second negative pole portion and a second positive pole portion, an insulating layer disposed between a surface of the first cell portion and a surface of the second cell portion, the insulating layer having one or more insulating via holes, a series connector connecting the first negative pole portion and the second positive pole portion in series via the first via holes and the insulating via holes, a positive pole current collector connected to the first positive pole portion, and a negative pole current collector connected to the second negative pole portion.

Abstract: In an embodiment, a Li-ion battery cell comprises an anode electrode with an electrode coating that (1) comprises Si-comprising active material particles, (2) exhibits an areal capacity loading in the range of about 3 mAh/cm2 to about 12 mAh/cm2, (3) exhibits a volumetric capacity in the range from about 600 mAh/cc to about 1800 mAh/cc in a charged state of the cell, (4) comprises conductive additive material particles, and (5) comprises a polymer binder that is configured to bind the Si-comprising active material particles and the conductive additive material particles together to stabilize the anode electrode against volume expansion during the one or more charge-discharge cycles of the battery cell while maintaining the electrical connection between the metal current collector and the Si-comprising active material particles.

Abstract: Systems and methods for operating an electric energy storage device are described. The systems and methods may reduce a voltage potential between a ground reference and terminals of an electric energy storage device. By lowering the voltage potential, a possibility of unintentionally discharging the electrical energy storage device to ground may be reduced.

Abstract: An electrode assembly for a flow battery is disclosed comprising a porous electrode material, a frame surrounding the porous electrode material, at least a distributor tube embedded in the porous electrode material having an inlet for supplying electrolyte to the porous electrode material and at least another distributor tube embedded in the porous electrode material having an outlet for discharging electrolyte out of the porous material. The walls of the distributor tubes are preferably provided with holes or pores for allowing a uniform distribution of the electrolyte within the electrode material. The distributor tubes provide the required electrolyte flow path length within the electrode material to minimize shunt current flowing between the flow cells in the battery stack.

Abstract: A seal assembly for a battery cell includes a grommet having an opening having an inner surface. A nail has a nail head and a stem extending from the stem. The stem includes a first portion with a larger diameter and a second portion with a smaller diameter and the stem extends through the opening in the grommet. The stem and the grommet form a first interference fit at a distal end of the opening. A trap clearance is formed between the distal end of the opening and the nail head. The trap clearance defines a trap for a sealant. A sealant is disposed on the stem and is located at least partially in the trap.

Abstract: Provided is a composition for a non-aqueous secondary battery adhesive layer containing organic particles, a thixotropic agent, and water. The organic particles have a core-shell structure including a core portion and a shell portion at least partially covering an outer surface of the core portion. The composition for a non-aqueous secondary battery adhesive layer has a viscosity ?0 at a shear rate of 100 s?1 of less than 10 mPa·s, a viscosity ?1 at a shear rate of 10,000 s?1 of not less than 0.5 mPa·s and not more than 2.4 mPa·s, and a ratio (?0/?1) of the viscosity ?0 relative to the viscosity ?1 of not less than 1.2 and not more than 10.

Abstract: A battery pack includes battery cells arranged in a first direction, and a busbar assembly coupled to upper portions of the battery cells, the busbar assembly having a busbar electrically connected to the battery cells, a flexible substrate configured to measure a state information of the battery cells, and an insulating film surrounding the busbar and the flexible substrate.

Abstract: A process for delineating a population of electrode structures in a web includes laser ablating the web to form ablations in the web, each ablation being formed by removing a portion of an electrochemically active layer to thereby expose a portion of an electrically conductive layer. The process includes forming alignment features in the web that are formed at predetermined locations on the web. The process also includes laser machining the web to form weakened tear patterns in the web that delineate members of the electrode structure population, each of the delineated members being individually bounded, at least in part, by a member of the weakened tear patterns that is adapted to facilitate separation of delineated members, individually, from the web by an application of a force, the alignment features being used to aid in the formation of the weakened tear patterns.