Abstract: A non-aqueous electrolyte composition containing (i) at least one aprotic organic solvent; (ii) a compound of formula (I) (iii) at least one ion containing conducting salt; and (iv) optionally one or more additives.

Abstract: Process for the fabrication of an electrode structure comprising an electrochemically active material suitable for use in an energy storage device. The method includes electrodepositing the electrochemically active material onto an electrode in electrodeposition bath containing a non-aqueous electrolyte. The electrode structure can be used for various applications such as electrochemical energy storage devices including high power and high-energy lithium-ion batteries.

Abstract: A cathode for a lithium battery includes LiNi0.5-x/2Mn0.5-x/2MxO2 where M is at least one selected from the group consisting of Mo, Ti, Cr, Zr and V, and x is between 0.005-0.02. The LiNi0.5-x/2Mn0.5-x/2MxO2 can be coated with Mn2P2O7. The Mn2P2O7 can be 1-3 wt. %, based on the total weight of the LiNi0.5-x/2Mn0.5-x/2MxO2 and Mn2P2O7. A cathode composition, a lithium battery, and a method of making a lithium battery are also disclosed.

Abstract: The invention provides an all-solid-state battery stack with high voltage. The all-solid-state battery stack of the disclosure has a plurality of monopolar battery units stacked together via insulator layers. The monopolar battery unit also has a first current collector layer, a first active material layer, a solid electrolyte layer, a second active material layer, a second current collector layer, a second active material layer, a solid electrolyte layer, a first active material layer and a first current collector layer, stacked in that order. The plurality of monopolar battery units are connected together in series.

Abstract: The present invention aims to provide a heat shrinkable multilayer film capable of providing a heat shrinkable label that can be easily torn along the perforation in both the TD and MD and also has excellent impact resistance and transparency. Provided is a heat shrinkable multilayer film including: front and back layers; an interlayer; and adhesive layers, wherein the front and back layers and the interlayer are stacked with the adhesive layers interposed therebetween, the front and back layers each contain a polyester resin, and the interlayer contains a polystyrene resin in an amount of 80 to 99% by weight and a polyester resin in an amount of 1 to 20% by weight.

Abstract: A secondary battery has a battery body and a restraint. The battery body has a plurality of stacked power generation elements. The restraint restrains the battery body. The restraint has a first contact section (for applying a restraining force to an outermost layer surface (e.g., a negative electrode collector) of the battery body. The restraint is configured so that a stress occurring at a boundary of a non-contact region and a contact region of the first contact section is less than a breaking strength of the negative electrode collector, and the stress is based on the restraining force and on expansion and contraction of a negative electrode due to a change in volume of a negative electrode active material layer caused by charging and discharging.

Abstract: A secondary battery including external terminals provided on an outer side of a sealing plate of a battery case, lead terminals provided on an inner side of the sealing plate, the lead terminals connected to the external terminals being fixed to the sealing plate, collector members disposed on the inner side of the sealing plate, the collector members being connected to the lead terminals, and pluralities of collector tabs connected to a positive electrode plate and a negative electrode plate at an end portion of an electrode body. The pluralities of collector tabs are connected to the collector members, and the electrode body is accommodated inside the battery case while having the pluralities of collector tabs be in a bent state in an inner space defined by the sealing plate.

Abstract: A secondary battery includes: an electrode assembly including a main tab; a current collecting member adjacent the main tab; and a sub-tab electrically connecting the main tab to the current collecting member. The main tab is in and welded to the sub-tab, and the sub-tab and the main tab are bent in the same direction on the current collecting member.

Abstract: Disclosed herein is a method of manufacturing a micro-supercapacitor with an increased storage capacity of electrical energy. The method is a method of manufacturing a high-capacity micro-supercapacitor including an anode and a cathode separated from each other, which includes forming a pair of current collectors by discharging conductive ink on a substrate surface with a 3D printer, and forming an electrode consisting of an anode and a cathode by stacking an electrode constituting material in the form of a plurality of layers on each of the pair of current collectors using the 3D printer.

Abstract: A battery cell for an electric vehicle battery pack is provided. A housing of the battery cell can define a cavity. An electrolyte material can be housed within the cavity. A first polarity terminal of the battery cell can be disposed at an open end of the housing. A first conductive tab can be disposed at a closed end of the housing and electrically coupled with a first polarity portion of the electrolyte material. A conductive rod can extend through a core of the electrolyte material and can include a first end disposed at the closed end of the housing and electrically coupled with the first conductive tab. A receptacle can be electrically coupled with the first polarity terminal and can extend towards the electrolyte material to engage with a second end of the conductive rod at the open end of the housing.

Abstract: This disclosure relates to a rechargeable battery cell having a positive electrode, a negative electrode, an electrolyte, which comprises a conducting salt, and a separator, which is arranged between the positive electrode and the negative electrode. The negative electrode and the positive electrode are each an insertion electrode. The electrolyte is based on SO2. The separator comprises a separator layer which is an organic polymer separator layer. The thickness of the organic polymer separator layer, relative to the loading of the positive insertion electrode with active material per unit area, is less than 0.25 mm3/mg.

Abstract: A cylindrical battery with an opening sealing body that seals an opening of a battery can. The opening sealing body includes a valve member, a metal plate disposed on an inner side of the battery with respect to the valve member, and an annular insulating member interposed between the valve member and the metal plate. The valve member and the metal plate are connected to each other at respective central portions. The valve member has an annular thin-walled portion which is deformable when an internal pressure of the battery increases, and a recessed portion is formed by the thin-walled portion on the insulating member opposing side of the valve member. The insulating member has a section P1 that covers a surface, on the valve member side, of the metal plate, and the section P1 has a rib to be housed in the recessed portion.

Abstract: Filled carbon nanotubes (CNTs), methods of synthesizing the same, and lithium-ion batteries comprising the same are provided. In situ methods (e.g., chemical vapor deposition techniques) can be used to synthesize CNTs (e.g., multi-walled CNTs) filled with metal sulfide nanowires. The CNTs can be completely (or nearly completely) and continuously (or nearly continuously) filled with the metal sulfide fillers up to several micrometers in length. The filled CNTs can be synthesized on a carbon substrate. A lithium-ion battery can comprise a cathode, an anode comprising filled CNTs as described herein, and an electrolyte in contact with the cathode and/or the anode.

Abstract: The invention relates to an electrochemical element (1) comprising: a) a container (2) comprising an opening allowing the introduction of at least one electrochemical beam (7); and b) a closing part (3) for closing said container, comprising: i) at least one flat inner surface (4a, 4b, 4c) which is oriented towards the inside of the container and can be directly electrically connected to a current collector (6), ii) at least one flat outer surface (5a, 5b, 5c) which is oriented towards the outside of the container and can act as a terminal of the electrochemical element, and iii) at least one wall (8a, 8b, 8c) connecting said at least one flat inner surface to said at least one flat outer surface, said wall forming an angle of between 70 and 120° in relation to one of the two flat surfaces. The closing part of the container allows heat dissipation to be improved in the direction of the longitudinal axis of the element.

Abstract: A cylindrical battery cell including a first electrode terminal and a second electrode terminal having different polarities: an electrode assembly in which a positive electrode, a negative electrode and a separator interposed between the positive electrode and the negative electrode are wound; a battery case configured to include the electrode assembly therein in a state of being impregnated with an electrolytic solution; a cap assembly mounted to a top end of the battery case; and a connection cap including a cap housing loaded on the battery case and the cap assembly and having an insulating material, and a first connection plate and a second connection plate placed on the cap housing and electrically connected to the first electrode terminal and the second electrode terminal, respectively.

Abstract: A sealed battery disclosed herein is provided with an electrode body, a battery case, and an insulating holder. Round sections, having a curved surface, are formed between an inner surface and a bottom surface of the battery case. Deformation portions protruding towards the center, in a width direction, are formed on the inner surface of a lower end section of the insulating holder. A lower end section of a positive electrode connection portion and a lower end section of a negative electrode connection portion are press-deformed towards the center, in the width direction, by the deformation portions of the insulating holder. It becomes accordingly possible to suitably prevent short-circuits between the electrode body and the battery case, even when clearances within the battery case are made small and a width dimension of the electrode body is made large. Energy density can be suitably increased as a result.

Abstract: The present invention provides a charging device for a button/coin cell rechargeable lithium ion battery. A receiving inductor coil receives energy from a transmitting inductor coil which is passed to a wireless charging receiving circuit which is in electrical communication with the receiving inductor coil. The wireless charging receiving circuit communicates with a charging control circuit, a voltage regulation circuit, and a battery protection circuit in electrical communication with one another. The voltage regulation circuit includes a 1.8 V to 3.3 V constant voltage output regulator circuit to maintain a constant voltage output in loading currents ranging from approximately 10 ?A to approximately 300 mA.

Abstract: A lithium ion secondary battery that includes a winding-type electrode assembly in which a positive electrode having a positive electrode active material layer, a negative electrode having a negative electrode active material layer, and a separator interposed therebetween are wound into a roll shape and have a charge cutoff voltage of 4.41 V to 4.47 V. In this lithium ion secondary battery, an area ratio of the entirety of the negative electrode active material layer to an area of a facing portion between the positive electrode active material layer and the negative electrode active material layer is 100.5% to 104.0%. A gap between the positive electrode and the negative electrode is 0.1 mm to 0.5 mm in an axial direction of the winding. A discharge capacity per unit weight of a positive electrode active material in the positive electrode active material layer is 169.0 mAh/g to 178.0 mAh/g.

Abstract: A toothbrush has a handle and a treatment head mounted for movement relative to the handle against a spring force when a treatment force is applied in at least one treatment direction onto the treatment head. A treatment force measurement unit for determining the applied treatment force includes a capacitive force senor having a first electrode fixedly mounted with respect to the handle and a second electrode mounted at a distance from the first electrode. The second electrode is movably mounted with respect to the handle. A spring unit is arranged between the first and the second electrode. A control circuit determines at least one parameter indicative of the capacitance between the first and second electrodes, wherein the second electrode is mechanically coupled with the treatment head and is arranged to be moved relative to the first electrode when the treatment force is applied at the treatment head.

Abstract: A respiratory device, such as a ventilator, for use in treating respiratory disorders and for preventing respiratory disorders. The respiratory device is configured to be powered from a range of different power sources including an internal battery, an external battery, AC power source or a DC power source. The device may be electrically connectable to a plurality of external batteries in a series and the power from each external battery is used sequentially along the series. A controller of the respiratory device is configured to detect the connection of the different power sources and control use of the different power sources using a power priority scheme. The controller may determine an estimate of the total available battery capacity from all the electrically connected batteries and display the total battery capacity on a user interface display of the device.

Abstract: Aluminum alloy foil that, when used for battery packaging material, unlikely to develop pinholes or cracks even during molding of battery packaging material, and can exhibit excellent moldability. Aluminum alloy foil, which is for use in battery packaging material, wherein, with respect to cross section obtained by cutting aluminum alloy foil in vertical direction to rolling direction of aluminum alloy foil, which is a vertical direction to surface of aluminum alloy foil, proportion of total area of a {111} plane in total area of crystal planes of face-centered cubic structure, obtained by performing crystal analysis using EBSD method, is 10% or more; and with respect to cross section, a number average grain diameter R (rpm) of crystals in face-centered cubic structure, obtained by performing crystal analysis using EBSD method, satisfies following equation: number average grain diameter R?0.056X+2.0, where X=thickness (rpm) of aluminum alloy foil.

Abstract: A miniature electrochemical cell having a volume of less than 0.5 cc is described. The cell casing comprises an open-ended ceramic container having first and second via holes providing respective first and second electrically conductive pathways extending through the container. A metal lid secured to the open-end of the container by a gold seal provides the cell casing. An electrode assembly housed inside the casing comprises a cathode active material deposited on an inner surface of the ceramic container in contact with a current collector in electrical continuity with one of the conductive pathways. A solid electrolyte, preferably of LiPON (LixPOyNz), is deposited on the cathode active material followed by an anode active material in contact with the other conductive pathway. The first and second conductive pathways can comprise platinum or gold. That way, the first and second conductive pathways serve as negative and positive terminals for the cell.

Abstract: A rechargeable battery according to an exemplary embodiment of the present invention includes: an electrode assembly provided with a non-coated area tab that protrudes to one side of a coated area; a case provided with an opening at one side thereof to receive the electrode assembly; a cap plate coupled and welded to the opening; an electrode terminal provided in the cap plate and electrically connected to the non-coated area tab; and an insulation sheet disposed between the cap plate and the electrode assembly, and bent toward a direction crossing the cap plate at opposite ends of the inside of the cap plate and insulating the electrode assembly, wherein the insulation sheet includes a spacing portion that is distanced from a side corner of a welding line of the cap plate and the case.

Abstract: A high energy density, high power lithium metal anode rechargeable battery having volumetric energy density of >1000 Wh/L and/or a gravimetric energy density of >350 Wh/kg, that is capable of >1 C discharge at room temperature. In some embodiments, a high power lithium metal anode rechargeable battery of the present disclosure includes a lithium metal anode having a thickness of less than 20 ?m and a ratio of anode capacity (n) to cathode capacity (p) in a discharged state, i.e., n/p, in a range of 0.8 to less than or equal to 1 or in a range of 0.9 to less than or equal to 1. In some embodiments, a high power lithium metal anode rechargeable battery of the present disclosure further includes a high-voltage cathode and a hybrid separator.

Abstract: Methods of managing a lithium ion battery and of recovering branches and/or cells in the battery are provided, as well as battery management systems (BMS) and batteries implementing the methods. Branches and/or cells may be recovered by slow and deep discharging, followed by slow charging—to increase capacity, cycling lifetime and/or enhance safety thereof. BMSs may be configured to diagnose defective branches and/or cells and manage the recovery procedure with respect to changing operational loads the battery and the available internal and external charging sources.

Abstract: Provided is an electrolytic capacitor including: a capacitor element including an anode body, a dielectric layer formed on the anode body, a solid electrolyte layer formed on the dielectric layer, and a cathode layer formed on the solid electrolyte layer; lead terminals each connected to the anode body and the cathode layer; and a packaging member covering at least part of the capacitor element. The packaging member includes a side wall that is electrically conductive, and a bottom face, with at least one of the lead terminals partially exposed from the bottom face. An insulating member is interposed between a first end of the side wall and the lead terminal exposed from the bottom face, the first end being near the bottom face.

Abstract: Embodiments of a method for the preparation of an electrode assembly, include removing a population of negative electrode subunits from a negative electrode sheet, the negative electrode sheet comprising a negative electrode sheet edge margin and at least one negative electrode sheet weakened region that is internal to the negative electrode sheet edge margin, removing a population of separator layer subunits from a separator sheet, and removing a population of positive electrode subunits from a positive electrode sheet, the positive electrode sheet comprising a positive electrode edge margin and at least one positive electrode sheet weakened region that is internal to the positive electrode sheet edge margin, and stacking members of the negative electrode subunit population, the separator layer subunit population and the positive electrode subunit population in a stacking direction to form a stacked population of unit cells.

Abstract: The present invention relates to a battery module consisting of battery cells and a cooling module comprising multiple tiers, the cooling module being designed to hold the battery cells, such as lithium-ion batteries. The cooling module consists of at least one first and one second side part, each side part having at least one flow channel, and of multiple substantially flat elements which extend along planes between the side parts. An internal area is formed between neighbouring flat elements, said internal areas being designed to hold the battery cells.

Abstract: Disclosed are a battery cell assembly for a secondary battery, the battery cell assembly for a secondary battery including at least one battery cell; a first frame disposed on one side of the at least one battery cell; and a second frame which is disposed on the other side of the at least one battery cell so as to face the first frame and which is coupled to the first frame so as to protect the edge of the at least one battery cell together with the first frame. The present invention uses a frame type cell support which retains and supports at least one battery cell without separation, thereby providing a battery cell assembly for a secondary battery, namely a sub-battery module receiving body, having improved structural stability and assembly convenience, and a secondary battery including the same.

Abstract: The nonaqueous electrolyte secondary battery 100 herein proposed is characterized by being manufactured by performing an initial charging and discharging treatment on an assembly, in which are accommodated in a battery case 80 an electrode body 40, and a nonaqueous electrolyte containing a compound expressed by a general formula: A+[PX6-2n(C2O4)n]?, the content of the compound being 1.1 mass % to 1.2 mass % when the total mass of the nonaqueous electrolyte is assumed to be 100 mass %.

Abstract: In a vehicle body frame structure for a saddle riding vehicle, including an engine, a vehicle body frame that supports the engine, and a swing arm that supports a rear wheel. The vehicle body frame includes a head pipe, a main frame that extends from the head pipe toward a rear of the vehicle along a path superior to the engine, a down frame that extends from the head pipe downwardly along a path anterior to the engine, a lower frame that extends from a lower portion of the down frame toward the rear of the vehicle along a path inferior to the engine, and a pivot support member that extends from a rear portion of the lower frame upwardly up to a position of a pivot shaft that rotatably supports the swing arm. The pivot support member includes a pivot support portion that supports the pivot shaft.

Abstract: The present disclosure provides a battery module and a battery pack. The battery pack comprises a box and a battery module, the battery module is accommodated in the box. The battery module comprises batteries sequentially arranged in a first direction. The battery comprises an electrode assembly, a case and a cap assembly, the electrode assembly is received in the case, and the cap assembly is connected with the case. The case comprises two first side walls, and the two first side walls are respectively positioned at two sides of the electrode assembly in the first direction. The first side walls of two adjacent batteries face each other. An area of the first side wall is defined as S1, a distance between the electrode assemblies of two adjacent batteries in the first direction is defined as D, S1 and D satisfying a relationship: 1.2×10?5 mm?1?D/S1?500×10?5 mm?1.

Abstract: A secondary battery of the present invention includes at least a positive electrode, a negative electrode, a separation layer that spatially separates the positive electrode and the negative electrode, and an ion conductor that is held between the positive electrode and the negative electrode and has a function of conducting ions between the positive electrode and the negative electrode. In addition, in an initial stage of using the secondary battery, the secondary battery has a characteristic of a potential increase rate of the positive electrode immediately before completion of full charging being smaller than a potential decrease rate of the negative electrode immediately before the completion of full charging and a characteristic of a potential decrease rate of the positive electrode immediately before completion of full discharging being smaller than a potential increase rate of the negative electrode immediately before the completion of full discharging.

Abstract: The present invention relates to a safety-improved battery cell including a thermal expansion tape and a method of manufacturing the same, wherein a battery pack including multiple battery cells is configured such that heat generated during a charging/discharging process and internal gas generated thereby are discharged to outside of a battery cell by employing a thermal expansion tape. Thus, the present invention can improve safety of a pouch-type secondary battery pack by discharging gas generated in a pouch-type secondary battery. In addition, the present invention utilizes pressure of gas generated in the secondary battery and thus can be operable without provision of a separate device and an external power source. Moreover, the present invention can perform repetitive gas discharge due to a configuration of a fixing unit having thermal expansion properties.

Abstract: The present disclosure provides a battery module and a battery pack. The battery pack comprises a box and a battery module, the battery module is accommodated in the box. The battery module comprises batteries sequentially arranged in a first direction. The battery comprises an electrode assembly, a case and a cap assembly, the electrode assembly is received in the case, and the cap assembly is connected with the case. The case comprises two first side walls, and the two first side walls are respectively positioned at two sides of the electrode assembly in the first direction. The first side walls of two adjacent batteries face each other. An area of the first side wall is defined as S1, a distance between the electrode assemblies of two adjacent batteries in the first direction is defined as D, S1 and D satisfying a relationship: 1.2×10?5 mm?1?D/S1?500×10?5 mm?1.

Abstract: Secondary batteries and methods of manufacture thereof are provided. A secondary battery can comprise an offset between electrode and counter-electrode layers in a unit cell. Secondary batteries can be prepared by removing a population of negative electrode subunits from a negative electrode sheet, the negative electrode sheet comprising a negative electrode sheet edge margin and at least one negative electrode sheet weakened region that is internal to the negative electrode sheet edge margin, removing a population of separator layer subunits from a separator sheet, and removing a population of positive electrode subunits from a positive electrode sheet, the positive electrode sheet comprising a positive electrode edge margin and at least one positive electrode sheet weakened region that is internal to the positive electrode sheet edge margin, and stacking members of the negative electrode subunit population, the separator layer subunit population and the positive electrode subunit population.

Abstract: Disclosed are a negative electrode for a rechargeable battery and a rechargeable battery including the same. The negative electrode for a rechargeable battery according to an exemplary embodiment of the present invention includes a substrate and an active material layer including graphite formed on at least one surface of the substrate, wherein the active material layer includes an internal layer relatively adjacent to the substrate and a surface layer relatively away from the substrate and the internal layer and the surface layer have a degree of divergence (DD) defined by Equation 1 below, and the DD value of the surface layer is 6% to 50% of the DD value of the internal layer. DD(Degree of Divergence)=(Ia/Itotal)×100??[Equation 1] (Ia is a sum value of peak intensities appearing at a non-planar angle when XRD is measured using a CuK? line, and Itotal is a sum value of peak intensities appearing at every angle when XRD is measured using the CuK? line).

Abstract: The present invention provides a lithium secondary battery which includes an electrode assembly to which an electrode tap is attached, an electrode tap receptor configured to house a portion of the electrode assembly such that a portion of the electrode tap protrudes to an outside, and a case configured to surround the electrode assembly and seal the electrode assembly together with the electrode tap receptor, wherein the electrode tap receptor includes a gas barrier layer.

Abstract: A battery assembly includes a battery that has a top surface surrounded by a circumferential edge; and a removable tab attached to the top surface. The removable tab includes a first tab end and an oppositely disposed second tab end; a gripping region disposed adjacent to the first tab end; and a battery cell attachment region disposed adjacent to the second tab end and attached to the top surface of the battery. The battery cell attachment region has first and second oppositely disposed sidewalls, wherein at least one of the first and second sidewalls is curved inwardly away from the circumferential edge of the battery such that a portion of the top surface of the battery is exposed between the sidewall and the circumferential edge of the battery.

Abstract: A lithium ion electrochemical cell is described in which the lithium comprising further comprises a lithiation agent. The lithiation agent, which comprises a lithium constituent, is designed to provide an excess source of lithium to minimize capacity loss of the lithium ion electrochemical cell. The anode of the lithium ion cell comprises a material matrix comprising carbon, graphene and an active element such as silicon or tin.

Abstract: A solid-state battery comprises an anode in electrical contact with an anode current collector, including a first ionically conductive solid electrolyte material having a susceptibility to reduction in a presence of lithium metal such that, upon contact with lithium, the ionically conductive material partially reduces to a mixed ionic and electronic conductor including a partially reduced species, a cathode, and a separator positioned between and in ionic contact with the anode and cathode. The separator is formed of a second ionically conductive solid electrolyte material which is in contact with the first ionically conductive material but not susceptible to reduction in a presence of lithium metal and not soluble for the partially reduced species such that the separator has a susceptibility for migration of lithium ions from the mixed ionic and electronic conductor and impedes propagation or exchange of the partially reduced species from the mixed ionic and electronic conductor.

Abstract: Provided is a pouch case including first and second accommodation portions formed to accommodate the electrode assembly, a sealing portion formed along an outer part of the pouch case to surround the first and second accommodation portions, and a connecting portion formed with the same depth as that of the first and second accommodation portion and configured to connect the first and second accommodation portions at a predetermined interval, wherein a protrusion protrudes in a direction toward the sealing portion at opposite ends of the connecting portion. Accordingly, in the pouch case, and a secondary battery and a secondary battery pack using the same, a perfect cooling structure is acquired by uniformly forming one side surface of the secondary battery, and thus, an effect of holding one side surface of the secondary battery to be close to a cooling plate to maximize cooling efficiency is achieved.

Abstract: A power storage device includes an electrode body, an insulating holder, and an outer case. The insulating holder is formed by folding a sheet formed of an insulating material. The insulating holder has an interposed wall interposed between a side end surface of the electrode body and the outer case. The interposed wall has a first facing region that faces a curved surface of a corner portion of the outer case and a second facing region that faces a portion away from the curved surface toward an opening. Each of the first facing region and the second facing region has a plurality of overlap sections in which some of sheet elements that form the sheet overlap each other. The number of the overlapping sheets is larger in the overlap section arranged in the second facing region than in the overlap section arranged in the first facing region.

Abstract: A method of manufacturing a high loading electrode, which prevents the phenomenon of the binder being lifted, does not cause drying of the electrode slurry, and does not cause damage of the electrode layer and reduction of the electrode strength at the corners in the punching is provided. The method of manufacturing the high loading electrode includes applying an electrode slurry on a release film to thereby produce an electrode layer having the release film attached thereto, punching the electrode layer having the release film attached thereto to provide a plurality of punched electrode layers, each punched electrode layer having a size of a unit electrode, separating and removing the release film from the punched electrode layers, and stacking and rolling at least two punched electrode layers on a current collector.

Abstract: An embodiment of the present invention provides an electrode assembly in which a first electrode having a first electrode coated region and a first electrode uncoated region, a separator, and a second electrode having a second electrode coated region and a second electrode uncoated region are stacked and wound around a winding axis, wherein the first electrode coated region may include a first substrate, a first small electrode portion including first active material layers formed on both surfaces of the first substrate, and a second small electrode portion including a first active material layer formed on the other surface of the first substrate in which one surface thereof is exposed, and the second small electrode portion may be positioned at a first curved portion formed by first winding of the electrode assembly.

Abstract: In a battery case fixing structure, a case side wall, facing outward in a vehicle width direction, of a battery case includes at least two fixing portions that project outward in the vehicle width direction and are fixed to a vehicle body, and a linking wall that is formed as a planar shape opposing the case side wall and links the at least two fixing portions in a fore-and-aft direction, the fixing portions and the linking wall being formed integrally with the battery case. Accordingly, it is possible to enhance the side collision resistance performance by increasing the strength of a battery case of an electric vehicle.

Abstract: A bicycle battery unit is configured to reduce the effect of contact with an obstacle. The bicycle battery unit includes a plurality batteries, a housing accommodating the batteries and a protector. The protector is integrally provided on at least a portion of the outer surface of the housing. The protector has a lower hardness than a hardness of the housing.

Abstract: The present application relates to a current collector, an electrode plate, a battery and usages thereof. The current collector includes at least one conductive layer configured to support an electrode active material layer, and an insulation layer configured to support the at least one conductive layer. The conductive layer has a room temperature film resistance RS satisfying 0.01?/??RS?0.15?/?. The current collector can significantly increase resistance in short-circuit and reduce current in the short-circuit, and reduce heat generated during the short-circuit and improving safety performance. The heat can be totally absorbed by the battery. Therefore, the resulted temperature rise of the battery is small, the damage to the battery caused by the short circuit can be limited to a “point”, and only a “point break” is formed, without influencing normal operation of the battery in a short time.

Abstract: The present application provides a package sealing structure, a preparation method thereof and a flexible packaging battery. In a package peripheral region of the package sealing structure, the insulating heat sealing layers of the two layers of packaging film face each other and are melted into one body to form an insulating fusion layer which seals and bonds the two layers of the packaging film together. The insulating fusion layer is formed with an overflow portion that overflows from the package peripheral region of the package sealing structure to the outer end surfaces of the core metal layers of the two layers of packaging film and covers completely the outer end surfaces of the core metal layer of the two layers of packaging film, so that the outer end surfaces of the core metal layers are insulated from the peripheral environment.

Abstract: Disclosed is a stacked battery that can flow a larger rounding current in a short-circuit current shunt part than in an electric element when a short circuit occurs in the short-circuit current shunt part and the electric element in nailing, the stacked battery in which an electrical resistance of a current collector tab of the short-circuit current shunt part is smaller than an electrical resistance of a current collector tab of the electric element.