Abstract: An electrode assembly includes an electrode subassembly forming by winding a first electrode plate and a second electrode plate. The first electrode plate includes a first electrode plate unit. The first electrode plate unit includes a bipolar current collector, a first active layer, and a second active layer. The bipolar current collector is disposed between the first active layer and the second active layer. The first active layer is electrically connected to the second active layer. The second electrode plate includes a composite current collector, a third active layer, and a fourth active layer. The composite current collector is disposed between the third active layer and the fourth active layer. The third active layer is electrically insulated from the fourth active layer. The disclosure further provides a battery including the electrode assembly.

Abstract: A negative-electrode terminal that is secured to a sealing plate is connected to a first negative-electrode current collector. A negative-electrode tab that is connected to the negative-electrode sheet is connected to a second negative-electrode current collector. The first negative-electrode current collector and the second negative-electrode current collector are disposed along the sealing plate. The second negative-electrode current collector has an opening. The second negative-electrode current collector is disposed on the first negative-electrode current collector such that the opening faces the first negative-electrode current collector. The second negative-electrode current collector is welded to the first negative-electrode current collector around the opening.

Abstract: The purpose of the present disclosure is to prevent, in a nonaqueous electrolyte secondary battery, a tape adhered to an outermost peripheral surface of an electrode group from breaking due to charging and discharging. A nonaqueous electrolyte secondary battery according to one embodiment of the present disclosure includes a winding-type electrode group and tapes adhered to an outermost peripheral surface of the electrode group so that an electrode group winding end E is fixed to the outermost peripheral surface of the electrode group. The tapes include: two adhesive regions including a substrate layer and an adhesive layer; and a non-adhesive region sandwiched between the two adhesive regions and consisting only of the substrate layer. The non-adhesive region is disposed so as to extend across the winding end E, which is positioned on the outermost periphery of the electrode group, in the winding direction.

Abstract: Various embodiments of the present invention relate to a secondary battery, wherein a technical problem to be solved is to provide a secondary battery capable of maintaining an electrical insulating state between a case (can) and a cap assembly even after a gasket is melted due to short-circuiting and heat generation. To this end, the present invention provides a secondary battery comprising: a cylindrical can; an electrode assembly received, along with an electrolyte, in the cylindrical can; a cap assembly for sealing the cylindrical can; and a gasket interposed between the cylindrical can and the cap assembly, wherein the gasket further includes an insulating member having a melting temperature higher than a melting temperature of the gasket.

Abstract: Provided is an anode active material layer for a lithium battery. This layer comprises multiple particulates of an anode active material, wherein at least a particulate is composed of one or a plurality of particles of a high-capacity anode active material being encapsulated by a thin layer of elastomeric material that has a lithium ion conductivity no less than 10?7 S/cm (preferably no less than 10?5 S/cm) at room temperature and an encapsulating shell thickness from 1 nm to 10 ?m, and wherein the high-capacity anode active material (e.g. Si, Ge, Sn, SnO2, Co3O4, etc.) has a specific capacity of lithium storage greater than 372 mAh/g (the theoretical lithium storage limit of graphite).

Abstract: Provided are a separator for a secondary battery and an electrochemical device using the same. More particularly, a composite separator which has a lower Gurley permeability after curing than that before curing when forming a heat-resistant coating layer having low resistance, does not have a Gurley permeability which is greatly increased as compared with the Gurley permeability of a porous substrate itself before forming a coating layer to have an overall low Gurley permeability, and has a high surface hardness to have penetration stability, is provided.

Abstract: A cylindrical battery includes an electrode unit configured as a roll of a first electrode plate and a second electrode plate with a separator in between. The first electrode plate is an electrode plate to which one end of a first electrode tab and one end of a second electrode tab are connected, and the second electrode plate has the opposite polarity from the first electrode plate. Additionally, a case houses the electrode unit and a sealing member seals an opening rim of the case. The first electrode tab and the second electrode tab are disposed to project out from the first electrode plate at opposite ends of a winding axis of the first electrode plate. The first electrode tab contacts at a bottom portion of the case and the second electrode tab is welded at the opening rim side opposite the bottom portion of the case.

Abstract: Battery packs having jelly roll battery cells of different designs or capacities may have an imbalance in the charging and/or discharging current supplied to and provided by each jelly roll due to differences in capacity specific impedance between the battery cells of the battery pack. A C-rate (i.e., current relative to rated capacity) of a first and second battery cell connected in parallel may be balanced by altering properties of an active layer and/or a thickness of a current collector of the second battery cell to reduce an impedance of the second battery cell.

Abstract: A battery (30) is disclosed which comprises: a housing (32) containing an electrolyte solution; a plurality of jelly roll electrode assemblies (10) arranged substantially in parallel with each other in contact with the electrolyte solution within the housing (32) thereby forming a single electrochemical system of the battery (30), each jelly roll electrode assembly (10) having a first end (10A) and an opposing second end (10B); and a current collector plate (20); wherein the current collector plate (20) is arranged to be shared among and in direct physical and electrical contact with the first ends (10A) of the plurality of jelly roll electrode assemblies (10).

Abstract: A battery module including a first battery group, a second battery group, a cooling plate, and a plurality of busbars electrically connected with a plurality of battery cells. The cooling plate is placed between the first battery group and the second battery group, and the two surfaces of the cooling plate are respectively bonded onto the first battery group and the second battery group with thermally conductive adhesive, the first battery group and the second battery group can be mounted close to the cooling plate, thus increasing the heat dissipation area and improving the heat dissipation effect.

Abstract: The present disclosure provides a secondary battery, a battery module and a vehicle. The secondary battery includes an electrode assembly, a case and a cap assembly. The case has an accommodating cavity, and the electrode assembly is accommodated in the accommodating cavity. The electrode assembly includes electrode units, and the electrode units are stacked in an axial direction of the accommodating cavity. The cap assembly includes a cap plate and an insulating member provided at an inner side of the cap plate, the cap plate is connected with the case, and the insulating member is positioned at a side of the electrode assembly in the axial direction. The insulating member is provided with a first surface at a side close to the electrode assembly, and the first surface is a flat surface.

Abstract: A battery manufacturing method includes: winding positive and negative electrode plates and a separator to form a wound electrode assembly; cutting unwound portions of the positive and negative electrode plates and the separator such that the separator constitutes an outermost layer of the wound electrode assembly when the winding is completed; further winding around the wound electrode assembly the cut unwound portions; fixing a part of a terminal end of the separator in a lateral direction to the wound electrode assembly; and performing heat welding on parts of both lateral ends of an outermost portion of the separator in the wound electrode assembly, which are located above an electrode active material-uncoated portion of the positive or negative electrode plate to fix the lateral ends to the wound electrode assembly.

Abstract: An energy storage device comprising: a container, a mandrel, at least one sheet of separator material, and two or more electrodes. The container comprises an internal space bounded by an internal wall. The mandrel is positioned in the internal space and forms a cavity between a mandrel surface and the internal wall of the container. The sheet of separator material is arranged within the cavity about the mandrel to provide a plurality of discrete separator layers. An electrode is provided between each of the discrete separator layers, the mandrel is compressible, and the shape of the mandrel surface is concentric with the internal wall of the container.

Abstract: An electrode assembly is provided. The electrode assembly has a plurality of electrode plates having one or both sides of each of the electrode plates that are coated with an electrode active material and are stacked with a separator interposed between the respective electrode plates. The separator includes a surplus outer periphery of a size greater than the outer periphery of an electrode plate, an electrode tab which extends from the outer periphery of the electrode plate and protrudes outwardly beyond the outer periphery of the separator is formed on each electrode plate, and at least some of the separators forming the electrode assembly have an insulation-enhancing part for suppressing heat shrinkage of a separator formed in the surplus outer peripheries thereof which are adjacent to the respective electrode tabs.

Abstract: A slurry composition for a non-aqueous secondary battery negative electrode contains a negative electrode active material including lithium titanium oxide, a binder, and an organic solvent. The binder includes a copolymer that includes a nitrile group-containing monomer unit and at least one selected from an aliphatic conjugated diene monomer unit and an alkylene structural unit and that has a Mooney viscosity (ML1+4, 100° C.) of not less than 50 and not more than 200.

Abstract: The present invention provides a technology that allows supplying stably a nonaqueous electrolyte secondary battery having a high capacity retention rate and being excellent in resistance to deterioration. The nonaqueous electrolyte secondary battery disclosed herein is provided with a wound electrode body resulting from winding a stack 10 having a stacking of a positive electrode 50 and a negative electrode 60 across separators 70. The positive electrode 50 has a foil-shaped positive electrode collector 52 and a positive electrode mix layer 54. Each separator 70 has a resin substrate layer 72 and a heat resistance layer 74. In the nonaqueous electrolyte secondary battery disclosed herein, the peel strength of a boundary between the resin substrate layer and the heat resistance layer is 16 N/m or more and 155 N/m or less, and the density of the positive electrode mix layer is 2.3 g/cc or more and 2.6 g/cc or less.

Abstract: An all-solid state secondary battery including: a positive electrode active material layer; a solid electrolyte layer; and a negative electrode active material layer in this order. At least one of the positive electrode active material layer, the solid electrolyte layer, and the negative electrode active material layer is a layer including an inorganic solid electrolyte having conductivity for ions of metal elements belonging to Group I or II of the periodic table and binder particles which have an average particle diameter of 10 nm or more and 50,000 nm or less and encompass an ion-conductive substance. The binder particles are formed of the ion-conductive substance and a polymer, and the ion-conductive substance is coated with the polymer having a mass ratio of 30% or more and 100% or less of the ion-conductive substance.

Abstract: The power storage device is provided with a cell stack body formed by alternately arranging a plurality of secondary cells and a plurality of buffer plates. Each of the buffer plates has a non-deformable section and a deformable section that is elastically deformed according to a volume change in the secondary cell. The non-deformable section has a through hole in which the deformable section is fitted. The deformable section is formed thicker than the non-deformable section.

Abstract: The present application relates to an electrochemical device. Specifically, the present application provides an electrochemical device, including a cell and a shell enclosing the cell; the cell includes a jelly roll including a first electrode and a second electrode spaced from each other, a separator is disposed between the first electrode and the second electrode, the first electrode and the second electrode are wound to form the cell; the first electrode includes a first current collector, the first current collector includes a first surface and a second surface disposed oppositely; the first surface faces the shell, and includes a coated region coated with a first active material and an uncoated region; the uncoated region includes a first uncoated region disposed at an end of the jelly roll, and the first uncoated region includes alternating bent portions and straight portions; and the bent portions are provided with an insulating layer.

Abstract: An all-solid-state secondary battery including: a positive electrode active material layer including a positive electrode active material and a sacrificial positive electrode material having an oxidation-reduction potential which is less than a discharge voltage of the positive electrode active material; and a negative electrode active material layer including a negative electrode active material including an element alloyable with lithium or that forms a compound with lithium; and a solid electrolyte layer between the positive electrode active material layer and the negative electrode active material layer, wherein the sacrificial positive electrode material includes a sacrificial active material and a conductive agent.

Abstract: A pouch cell includes a generally rectangular cell housing formed of a metal laminated film that includes a box portion and a lid portion that is formed separately from the box portion. The active material including the electrode and an electrolyte is placed into the box portion and the lid portion is welded to the box portion. The box portion and the lid portion are formed and assembled together without using a drawing or a punching process. Instead, the pouch cell housing is formed via a series of folding and welding steps, whereby the pouch cell size is not limited by the draw depth of the metal laminated film.

Abstract: The present disclosure provides a component for collecting a current and a battery. The component for collecting a current comprises an introducing body and a connection body bendably arranged relative to the introducing body. The introducing body comprises a holding arrangement. The holding arrangement is used for fixing the introducing body when the connection body is bent. When the connection body is bent, an operator can use a clamping tool to fixedly clamp the holding arrangement arranged on the introducing body, so that the stress applied on the component for collecting a current can be transferred to the position of the clamping tool when the connection body is bent, thereby reducing the stress from damaging electrode assemblies.

Abstract: A secondary battery in which an electrode assembly including positive electrodes, negative electrodes, and separators disposed between the positive electrodes and the negative electrodes, and an electrolyte are housed in an exterior body. The electrode assembly has a step structure including a first region having a relatively high cross-sectional height and a second region having a relatively low cross-sectional height adjacent to the first region. The electrode assembly includes at least one of a positive electrode side connecting portion and a negative electrode side connecting portion in the first region. At least one of a positive electrode side extended portion and a negative electrode side extended portion in the second region is configured to be electrically connected to an external terminal.

Abstract: Lithium-based and sodium-based batteries and capacitors using metal foil current collectors, coated with porous layers of particles of active electrode materials for producing an electric current, may adapted to produce heat for enhancing output when the cells are required to periodically operate during low ambient temperatures. A self-heating cell may be placed in heat transfer contact with a working cell that is temporarily in a cold environment. Or one or both of the anode current collector and cathode current collectors of a heating cell may be formed with shaped extended portions, uncoated with electrode materials, through which cell current may be passed for resistance heating of the extended current collector areas. These extended current collector areas may be used to heat the working area of the cell in which they are incorporated, or to contact and heat an adjacent working cell.

Abstract: A battery includes at least an electrode array and an electrolyte solution. The electrolyte solution contains at least a solvent and a supporting salt. The electrode array includes at least a positive electrode, a porous insulating layer, and a negative electrode. The porous insulating layer is interposed between the positive electrode and the negative electrode. The porous insulating layer contains at least a group of inorganic nanoparticles and a group of polymer particles. Each inorganic nanoparticle in the group of inorganic nanoparticles is a dielectric. Each inorganic nanoparticle in the group of inorganic nanoparticles is in contact with the electrolyte solution.

Abstract: A non-aqueous electrolyte secondary battery includes: an electrode group including a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode; a tape for securing at least a wound end of the electrode group; and a non-aqueous electrolyte. The negative electrode, at least in a charged state, includes a lithium metal and/or a lithium alloy. The tape has a tensile strength of 20 N/10 mm or less at an elongation ratio of 200% or more.

Abstract: A cylindrical secondary battery includes a jelly-roll type electrode assembly, a cylindrical battery case for receiving the jelly-roll type electrode assembly, and a cap assembly mounted to the open upper end of the cylindrical battery case. The jelly-roll type electrode assembly includes a long sheet type positive electrode and a long sheet type negative electrode wound with a separator interposed between the positive electrode and the negative electrode. A welding pole is formed on the bottom surface of the cylindrical battery case so as to extend perpendicularly thereto.

Abstract: An electrode-separator assembly is provided that can drastically facilitate assembly of a LDH separator-equipped nickel-zinc battery without the work, structure, or components for the complete separation of a positive-electrode chamber from a negative-electrode chamber. The electrode-separator assembly includes a positive-electrode plate, a negative-electrode plate, a layered double hydroxide (LDH) separator for separation of the positive-electrode plate from the negative-electrode plate, and a resin frame having an opening to which the LDH separator and the positive-electrode plate are fitted or joined. The positive-electrode plate has a smaller face than the negative-electrode plate. The negative-electrode plate has a clearance area that does not overlap with the positive-electrode plate over a predetermined width from the outer peripheral edge of the negative-electrode plate.

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 secondary battery having an electrode assembly and an electrolyte in an exterior body. The electrode assembly includes a step structure including a first region and a second region lower than and adjacent to the first region. The electrode assembly includes at least one of a positive electrode side connecting portion that connects each of positive electrode side connecting tabs of all positive electrodes in the first region and a negative electrode side connecting portion that connects each of the negative electrode side connecting tabs of all negative electrodes in the first region. At least one of a positive electrode side extended tab of at least one of the positive electrodes and a negative electrode side extended tab of at least one of the negative electrodes in the second region are configured to be electrically connected to an external terminal.

Abstract: Improved high energy capacity designs for lithium ion batteries are described that take advantage of the properties of high specific capacity anode active compositions and high specific capacity cathode active compositions. In particular, specific electrode designs provide for achieving very high energy densities. Furthermore, the complex behavior of the active materials is used advantageously in a radical electrode balancing design that significantly reduced wasted electrode capacity in either electrode when cycling under realistic conditions of moderate to high discharge rates and/or over a reduced depth of discharge.

Abstract: An apparatus and a method of detecting liquid leakage within a battery pack using a gyro sensor and a moisture detecting sensor. When liquid leakage of a coolant is detected, such as when a pipe of a coolant supplied for cooling (radiating heat) within a battery pack is damaged, the apparatus recognizes a liquid leakage generation position according to a slope of the battery pack by using a gyro sensor and determines whether the liquid leakage is generated based on a difference in a temperature between an upper side and a lower side of a corresponding region by using moisture detecting sensors, thereby improving accuracy of the detection of the liquid leakage according to the slope and the position of the battery pack. Particularly, the moisture detecting sensor is operated to be on only when the detection of the liquid leakage is required, thereby preventing unnecessary energy consumption.

Abstract: Provide is a non-aqueous electrolyte for lithium ion battery, comprising a compound represented by structural formula I: In formula I, R1, R2, R3 and R4 are each independently selected from hydrogen atom, fluorine atom, cyano group, hydrocarbyl group or halogenated hydrocarbyl group having 1-5 carbon atoms, oxygen-containing hydrocarbyl group having 1-5 carbon atoms, silicon-containing hydrocarbyl group having 1-5 carbon atoms, X is a —O—R5—CN group, R5 is a hydrocarbyl group or a halogenated hydrocarbyl group having 1-5 carbon atoms, m, n, z and y are integers of 0 or 1, and m+n+y+z?0. When the non-aqueous electrolyte is used for lithium ion battery, the decomposition of electrolyte on the surface of electrode can be inhibited, and the high-temperature storage performance is improved with less gas generation and small expansion rate, therefore the high-temperature cycle performance and high-temperature storage performance of the battery are effectively improved.

Abstract: The embodiments of the present application provides a wound electrode assembly formed by winding a first electrode sheet, a second electrode sheet, and an isolating membrane disposed therebetween. The wound electrode assembly includes: a first surface having a first protrusion in the thickness direction of the wound electrode assembly; a first wound electrode assembly; a second wound electrode assembly wrapping the first wound electrode assembly, the first wound electrode assembly and the second wound electrode assembly sharing the first electrode sheet and the second electrode sheet; an adhesive layer disposed between the first electrode sheet and the isolating membrane, and/or between the second electrode sheet and the isolating membrane. The purpose of the present application is at least to provide a wound electrode assembly capable of reducing the risk of misalignment of the internal structures of the electrode assembly during the falling, and retaining the shape of the electrode assembly.

Abstract: A nonaqueous electrolyte secondary battery according to an embodiment of the present disclosure includes a negative electrode mixture layer which contains a first region located in a flat part of an electrode body and second regions located in a pair of curved parts of the electrode body, the ratio (B/A) of the packing density (B) in each of the second regions to the packing density (A) in the first region being 0.75 or more and 0.95 or less. Further, in a section passing through the center in the axial direction of the electrode body and being perpendicular to the axial direction, the ratio (SB/SA) of the sectional area (SB) of the pair of curved parts to the sectional area (SA) of the flat part is 0.28 or more and 0.32 or less.

Abstract: Presented are electronic power module assemblies with direct-cooling vapor chamber systems, methods for making/using such power module assemblies, and vehicles equipped with such power module assemblies. A power module assembly includes an outer housing with an internal coolant chamber that circulates therethrough a coolant fluid. A power semiconductor switching device is mounted to the module's housing, separated from the coolant chamber and isolated from the coolant fluid. The power device selectively modifies electric current transmitted between a power source and an electrical load. A two-phase, heat-spreading vapor chamber device includes an outer casing with a casing segment that is mounted to the module housing, fluidly sealed to the internal coolant chamber and exposed to the coolant fluid.

Abstract: This application relates to a battery comprising a positive electrode plate, a separator, and a negative electrode plate, wherein the positive electrode plate comprises a positive electrode current collector and at least two layers of positive active material coated on at least one surface of the positive electrode current collector, and wherein an underlying positive active material layer in contact with the positive electrode current collector comprises a first positive active material, a first polymer material and a first conductive material; and wherein an upper positive active material layer in contact with the underlying positive active material layer and away from the positive electrode current collector comprises a second positive active material, a second polymer material and a second conductive material, and the first polymer material comprises fluorinated polyolefin and/or chlorinated polyolefin polymer material. The battery has good safety and improved electrical properties.

Abstract: A button cell configured as a secondary lithium ion battery includes a button cell housing and an electrode separator assembly disposed inside the button cell housing. The button cell housing includes a metal cell cup, the metal cell cup having a cell cup plane region connected to a cell cup lateral surface region, a metal cell top, the metal cell top having a cell top plane region connected to a cell top lateral surface region, and an electrically insulating seal disposed between the cell cup lateral surface region and the cell top lateral surface region. The electrode separator assembly includes a positive electrode formed from a first portion of a first current collector, a negative electrode formed from a first portion of a second current collector, and a separator disposed between the positive electrode and the negative electrode.

Abstract: A button cell includes a button cell housing with a metal cell cup and a metal cell top. The metal cell cup has a cell cup plane region connected to a cell cup lateral surface region, and the metal cell top has a cell top plane region connected to a cell top lateral surface region. The cell cup plane region extends substantially parallel to the cell top plane region, the cell cup lateral surface region extends substantially parallel to and at least partially overlaps the cell top lateral surface region in an overlap area, an electrically insulating seal is disposed in the overlap area, and the cell cup lateral surface region and the cell top lateral surface region provide a force-fit connection therebetween to form a leaktight closure of the button cell housing. The button cell further includes an electrode winding disposed within the housing.

Abstract: The present invention relates to a method of welding an electrode tab which welds an electrode tab and a current collecting layer by using a pulsed laser beam, and a cable type rechargeable battery including an electrode manufactured according to the same.

Abstract: A wound electrode assembly, including a first electrode plate including a first current collector and a second electrode plate including a second current collector, wherein the second electrode plate includes a second empty foil segment, the second empty foil segment surrounds the first electrode plate, the second empty foil segment is configured as a tail segment of the second electrode plate, in the second empty foil segment, a surface of the second current collector opposite to the first electrode plate is coated with active substance, a surface of the second current collector away from the first electrode plate is coated with the active substance. The wound electrode assembly to effectively avoids lithium dendrite while improving the utilization of the battery material and the energy density of the battery, thereby improving the safety performance of the battery.

Abstract: The present invention provides a secondary battery. The secondary battery comprises a first electrode tab and a first electrode plate. The first electrode plate first electrode plate comprises a first current collector, a first active layer, a first electrode tab receiving groove and a first electrode plate notch. The first active layer is disposed on a surface of the first current collector. The first electrode tab receiving groove is configured to receive the first electrode tab, and the first electrode tab is electrically connected with the first current collector through the first electrode tab receiving groove. The first electrode plate notch is disposed on an edge of the first electrode tab receiving groove.

Abstract: An alkaline dry battery includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and an alkaline electrolytic solution contained in the positive electrode, the negative electrode and the separator. The negative electrode includes a negative electrode active material including zinc, and an additive. The additive includes at least one selected from the group consisting of maleic acid, maleic anhydride and maleate salts.

Abstract: A secondary battery includes a first electrode assembly including a first cathode and a first anode, a second electrode assembly that is disposed to be opposite the first electrode assembly and that includes a second cathode and a second anode, a cooling plate disposed between the first and second electrode assemblies for cooling of the first and second electrode assemblies, an exterior material in which the first and second electrode assemblies are disposed, a cathode tab electrically connected to the first and second cathodes and exposed outside the exterior material, and an anode tab electrically connected to the first and second anodes and exposed outside the exterior material, in which at least one of the cathode tab and the anode tab is coupled to the cooling plate.

Abstract: A battery arrangement for the structural integration of batteries in a vehicle, in particular an aircraft or spacecraft, includes at least one battery; and two supporting, multi-layered structural laminates, between which the at least one battery is held on both sides via battery holders, wherein each multi-layered structural laminate has a cooling plate layer and a current collector layer, wherein the at least one battery is coupled electrically to the current collector layer.

Abstract: An electrode assembly according to an exemplary embodiment of the present invention includes a cathode plate and an anode plate; a separator disposed between the cathode plate and the anode plate; and coating layers disposed between the separator and the cathode plate and between the separator and the anode plate. The separator includes a first portion that is covered with the coating layer, and a second portion that exposes a surface facing the cathode plate and a surface facing the anode plate, and at least one of the cathode plate and the anode plate includes a positive temperature coefficient (PTC) material.

Abstract: The present invention is focused on the making of an integral tubular battery pack of hollow cylindrical battery cells better suited for thermal management. The hollow cylindrical cell structure is made of two concentric cylinders within which the electrode assembly is mounted. The inner hollow cylindrical cell structure exterior' surface is the newly added feature as it provides additional area for heat transfer with the cell' surrounding. The newly designed hollow cylindrical cells' lithium-ion battery packs are equipped with thermal management system and used in large storage facilities and industrial batteries applications such as EVs and large-scale machines in general.

Abstract: A battery including: a casing having a cylindrical portion, an end portion configured for covering an opening disposed in an end of the cylindrical portion, and an inner surface defining a chamber in which an electrolyte is disposed therein; a conductive surface located within the chamber adjacent the inner surface of the casing, the conductive surface being configured for electrical communication with an anode terminal of the battery; a permeable separator sheet located within the casing configured for electrically isolating the electrolyte from the conductive surface; a conductive rod having a first end configured for electrical communication with a cathode terminal of the battery, and, a second end of the conductive rod configured for electrical communication with the electrolyte; wherein the end portion and the cylindrical portion are movably attached to each other, the end portion and cylindrical portion being movable relative to each other between at least a first attached position whereby the end porti

Abstract: A method of producing a positive-electrode active material for a non-aqueous electrolyte secondary battery is provided. The method includes obtaining a precipitate containing nickel and manganese from a solution containing nickel and manganese, heat-treating the resulting precipitate at a temperature of from 850° C. to less than 1100° C. to obtain a first heat-treated product, mixing the first heat-treated product and a lithium compound, and heat-treating the resulting lithium-containing mixture at a temperature of from 550° C. to 1000° C. to obtain a second heat-treated product. The second heat-treated product contains a group of lithium transition metal composite oxide particles having an average particle diameter DSEM of from 0.5 ?m to less than 3 ?m and D50/DSEM of 1 to 2.5. The lithium transition metal composite oxide particles have a spinel structure based on nickel and manganese.

Abstract: A method for producing a secondary battery including an electrode body having a positive electrode plate and a negative electrode plate, a prismatic outer body having an opening and houses the electrode body, a sealing plate that seals the opening of the prismatic outer body, and a positive electrode external terminal that is electrically connected to the positive electrode plate and attached to the sealing plate. The method includes a fixation step of electrically connecting a first positive electrode current collector to a positive electrode external terminal and fixing the first positive electrode current collector to the sealing plate, a first connection step of weld-connecting a stack of a plurality of positive electrode tabs to the second positive electrode current collector, and a second connection step of weld-connecting the first positive electrode current collector to the second positive electrode current collector after the fixation step and the first connection step.