Abstract: A rechargeable battery includes an electrode assembly including a first electrode and a second electrode; a case for accommodating the electrode assembly; a cap plate in an opening of the case to seal the case, including a terminal hole, and connected to the first electrode through a lead tab; and first and second electrode terminals electrically coupled to the electrode assembly and protruding away from the cap plate, the first electrode terminal including plurality of lead terminals connected to the cap plate, and a plate terminal supported by the plurality of lead terminals to be spaced apart from the cap plate.

Abstract: An energy storage device including: a cylindrical case having at least one end closed; and an electrode assembly housed in the case. A reduced-diameter portion, at which an outer diameter of the case is reduced, is formed at the closed end of the case.

Abstract: Disclosed are a cathode active material and a method to produce the same at low cost. The cathode powder comprises modified doped LiCoO2 carrying a secondary phase having either one of space groups Fm-3m or Fd-3mS. The modified LiCoO2 is Ni and Mn bearing and has regions of low and high manganese content, where regions with high manganese content are located in islands on the surface. The cathode material has high cycling stability, a very high rate performance and good high temperature storage properties.

Abstract: A protection circuit module (PCM) integrated cap assembly includes a cap plate including an electrically conductive material and defining a through hole passing from a first surface of the cap plate to a second surface of the cap plate, a wiring unit including an electrically conductive material and a circuit pattern, and facing the first surface of the cap plate, wherein a first edge of the wiring unit is electrically coupled to the cap plate, and wherein a second edge of the wiring unit extends through the through hole of the cap plate a first insulating unit in a space of the circuit pattern a second insulating unit between the second edge of the wiring unit and a portion of the cap plate defining the through hole, and at least one electrical component coupled to the circuit pattern.

Abstract: A battery reinforcement method for reinforcing a rectangular battery cell in which a battery element is disposed in a rectangular external packaging, the method includes enclosing the battery element between two rectangular external packaging sheets and sealing the rectangular external packaging sheets with a sealing part that extends along edges of the rectangular external packaging sheets so as to form the rectangular external packaging, and forming a reinforcing part outside of the sealing part on the rectangular external packaging.

Abstract: An accumulator device includes: an outer container with mutually overlapped outer films bonded air-tightly to each other at a bonding portion formed along respective outer peripheral edge portions; an electrode unit accommodated inside the outer container and including positive and negative electrode sheets stacked one on another with a separator disposed therebetween, the positive and negative electrode sheets each including a current collector on which an electrode layer is formed; positive and negative electrode terminals provided to protrude from inside the outer container to outside through the bonding portion; and an electrolytic solution injected in the outer container. The positive electrode terminal includes an aluminum terminal substrate and a nickel-plating coating formed on a surface of an outer end portion of the terminal substrate located outside the outer container; an inner edge of the nickel-plating coating is located within the bonding portion.

Abstract: In order to provide a magnetic field measuring apparatus facilitating the pressure control in a gas cell, or capable of inspecting the internal pressure of the gas cell without using any special process, the magnetic field measuring apparatus is configured such that a process layer of the magnetic field measuring apparatus has such a structure that includes a first hollow portion and a second hollow portion provided opposed to first hollow portion with a first isolation wall interposed therebetween. Alternatively, a method for manufacturing the magnetic field measuring apparatus includes breaking the first isolation wall after generating alkali metal (FIG. 17 and FIG. 20).

Abstract: An apparatus for providing safety measures during gas release from a vehicle battery, such as a damaged lithium-ion rechargeable battery, arranged in a volume space having an opening includes at least one shroud element. The shroud element is configured to expand into the volume space by being filled with a gas such that, upon expansion of the shroud element, openings in the shroud element are enlarged and shroud element contents are discharged into the volume space through the enlarged openings in the shroud element. The apparatus further includes a device that, upon reception of a trigger signal, is configured to fill the shroud element at least partially with carbon dioxide gas such that carbon dioxide gas is discharged into the volume space as contents of the shroud element. An installation space includes the apparatus and a method is implemented to provide safety measures during gas release from the vehicle battery.

Abstract: An electrochemical device includes a wound laminated body with first and second electrodes, first and second separators, an electrolytic solution; and an outer package that houses the wound body and the electrolytic solution. The electrochemical device satisfies, at an outer end of the laminated body in a winding direction: the first and second separators protrude more outward in the winding direction than the second electrode; the first electrode protrudes more outward in the winding direction than the first and second separators; and an outer end of the first separator in the winding direction inclines toward a winding center and comes into contact with an upper surface of the second separator beyond the second electrode and an outer end of the first electrode in the winding direction inclines toward the winding center and comes into contact with the second separator and with the peripherally inner first electrode beyond the second electrode.

Abstract: The present invention provides a cylindrical lithium-ion secondary battery. The lithium-ion battery of the present invention has a structure in which the value of B/A is optimized, where the distance between an electrode pole to which strip-form lead pieces are welded, the lead pieces being formed intermittently in the winding direction, which is the longitudinal direction of the belt-like electrodes, and the inner wall of the battery can is represented by A, and the distance between the electrode pole and the wound electrode group is represented by B, in order to secure an exhaust passage for the gas generated upon occurrence of an abnormality in the battery.

Abstract: A mounting apparatus for securing a battery module to an enclosure includes a bracket and a latching member. The bracket is secured to the enclosure and defines a receiving space for receiving the battery module. The latching member is attached to the bracket and includes a resilient portion and a blocking flange perpendicularly connected to the resilient portion. The blocking flange is engaged with the battery module to prevent the battery module from disengaging from the receiving space, and the resilient portion is resiliently deformable to disengage the blocking flange from the battery module so that the battery module is easily installed or detached from the enclosure without extra tools.

Abstract: A method of producing an electrical potential by way of a rechargeable battery with a positive electrode of lead and a negative electrode of highly pure zinc. The electrolyte is an aqueous solution of an alkali metal bisulfate. Upon discharge, lead dioxide is reduced to lead sulfate, zinc is oxidized to zinc oxide, and the electrolyte is converted to an alkali metal hydroxide. The reactions are reversed when the battery is charged.

Abstract: The invention relates to a cylindrical AAA alkaline dry battery including: a positive terminal protruding from one end face of the alkaline dry battery; a negative terminal protruding from the other end face; and an external label covering the alkaline dry battery. The diameter Dp (mm) and protruding height Hp (mm) of the positive terminal and the diameter Dn (mm) and protruding height Hn (mm) of the negative terminal satisfy the relation (1): 2.5?Dn?Dp?4.1 (1), and the relation (2): 0.8?Hp?Hn?1.1 (2). This permits easy and reliable identification of the polarities of the terminals, making it possible to provide a cylindrical AAA alkaline dry battery which is unlikely to be installed reversely.

Abstract: A non-aqueous electrolyte secondary battery including: a container; an electrode assembly housed in the container; an electrode terminal provided at the container; and a current collector which electrically connects the electrode terminal and the electrode assembly, wherein the container includes a wall having (i) an outer surface with a protrusion part formed to be protrude outward and (ii) an inner surface with a recess part formed corresponding in position to the protrusion part when the protrusion parts is formed, and the current collector includes a base part connected to the electrode terminal in the recess part and an arm part which extends from the base part in the direction opposite to the protrusion direction of the protrusion part, and is connected to the electrode assembly.

Abstract: Disclosed herein is a positive electrode active material wherein at least one metallic element M1 different from a principal transition metal element A is present at least at part of a surface of a lithium-containing transition metal oxide containing the principal transition metal element A, and, further, a compound of a metallic element M2 different from the metallic element M1 is present in a coating manner or in the vicinity of the lithium-containing transition metal oxide.

Abstract: The disclosed embodiments provide a battery pack for use with a portable electronic device. The battery pack includes a first set of cells with different capacities electrically coupled in a parallel configuration. Cells within the first set of cells may also have different thicknesses and/or dimensions. The first set of cells is arranged within the battery pack to facilitate efficient use of space within a portable electronic device. For example, the first set of cells may be arranged to accommodate components in the portable electronic device.

Abstract: According to one embodiment, a battery includes an electrode group, a tab, a conductive nipping member, a case, a lid and a lead. The conductive nipping member includes first and second nipping sections. The first and second nipping sections divide the tab into two bundles in which portions of the tab are laminated onto each other in a thickness direction of the electrode group. The lead includes a connecting section connected electrically to a terminal, and current collecting sections which are two sections branched from the connecting section and sandwiching the nipping member.

Abstract: A rechargeable battery having improved safety against puncture and collapse includes an electrode assembly, a case, a first electrode terminal and a second electrode terminal, a cap plate, and a short circuit member. The electrode assembly includes a first electrode, a separator, and a second electrode. The case contains the electrode assembly. The first electrode terminal and a second electrode terminal are electrically connected to the first electrode and the second electrode, respectively. The short circuit member is between the electrode assembly and the case and short circuits the secondary battery when the secondary battery is punctured or collapsed.

Abstract: A cable-type secondary battery, includes an electrode assembly including first and second polarity electrodes with a thin and long shape, each having a current collector whose cross-section perpendicular to its longitudinal direction is a circular, asymmetrical oval or polygonal shape, an electrode active material applied onto the surface of the current collector, and a separator or an electrolyte layer interposed between the electrodes; and a cover member surrounding the electrode assembly, wherein the cable-type secondary battery is provided with a first polarity terminal and a second polarity terminal connected to the first polarity electrode and the second polarity electrode, respectively, at the first end of the cable-type secondary battery; a housing cap configured to fix the first and second polarity terminals and cover the first end of the cable-type secondary battery; and a length-adjustable coupling unit at a second end of the cable-type secondary battery.

Abstract: A cylinder type secondary battery includes a can having an opening, an electrode assembly in the can, a cap assembly covering the opening of the can, an upper insulating plate between the electrode assembly and the cap assembly; a support plate on the upper insulating plate; the support plate having a peripheral edge, wherein an area of the support plate is smaller than an area of the upper insulating plate, and a first electrode tab extending from the electrode assembly, the first electrode tab having a first section contacting the support plate, a second section contacting the cap assembly, and a bent section between the first section and the second section, wherein a portion of the bent section protrudes from the peripheral edge of the support plate.

Abstract: A cylindrical battery includes a pair of female terminals. One of the pair of female terminals is placed at the axial center of the battery, and provided to recede from one end surface of the battery. The other terminal is placed in a position away from the axial center, to recede from the one end surface of the battery. A male thread portion is provided on an outer peripheral surface of the battery. A handle portion is provided on another end surface of the battery. A female thread portion to be threadedly engaged with the male thread portion is provided in an inner peripheral surface of the battery box. A pair of male terminals are provided on a bottom surface of the battery box. The battery is designed to be detachably mounted inside the battery box by being rotated inside the battery box.

Abstract: A secondary battery including: spirally wound electrode body in which positive electrode and negative electrode are laminated via separator and spirally wound, wherein the positive electrode includes an inner circumference side positive electrode active material layer and an outer circumference side positive electrode active material layer while including a single side active material layer formation region, the ratio A/(A+B) of an area density A of the inner circumference side positive electrode active material layer and an area density B of the outer circumference side positive electrode active material layer, an inner diameter C of the coil opening portion, and the ratio D/E of a thickness D of the positive electrode and a thickness E of the positive electrode collector satisfy the relationship expressed in Formula 1, and a length F of the single side active material layer formation region satisfies the relationship expressed in Formula 2.

Abstract: This device comprises an enclosure and electric connections for connection, in a power supply circuit, with either one of two interchangeable electric power sources, as required. The enclosure delineates a housing accommodating either two primary cells together or a storage battery. A contact for connecting a terminal of one of the primary cells to a terminal of the other primary cell comprises a clamp that is deformable between a first configuration in which each one of two facing branches of the contact is positioned to connect one of said terminals by penetrating into an accommodating volume for accommodating the storage battery, and a second configuration in which the two branches are placed outside said accommodating volume which is left free.

Abstract: The present invention relates to an anode for a secondary battery, comprising: a wire-type current collector; a metal-based anode active material layer formed on the surface of the wire-type current collector, and comprising a metallic active material; and a graphite-based anode composite layer formed on the surface of the metal-based anode active material layer, and comprising a mixture of a graphite-based active material, a conductive material and a first polymer binder. The anode of the present invention has the metal-based anode active material layer together with the graphite-based anode composite layer acting as a buffer, thereby preventing the metallic active material from being isolated or released even if excessive volume expansion occurs during charging and discharging processes. Also, the graphite-based anode composite layer has good affinity with an organic electrolyte solution to compensate the defect of the metallic active material having low affinity with an organic electrolyte solution.

Abstract: The present invention relates to a cable-type secondary battery having a horizontal cross section of a predetermined shape and extending longitudinally, comprising: a core for supplying lithium ions, which comprises an electrolyte; an inner electrode, comprising an open-structured inner current collector surrounding the outer surface of the core, and an inner electrode active material layer formed on the surface of the inner current collector; a separation layer surrounding the outer surface of the inner electrode to prevent a short circuit between electrodes; and an outer electrode surrounding the outer surface of the separation layer and comprising an outer electrode active material layer and an outer current collector. The core disposed in the inner electrode having an open structure, from which the electrolyte of the core for supplying lithium ions can be easily penetrated into an electrode active material, thereby facilitating the supply and exchange of lithium ions.

Abstract: A three-dimensional shaped battery includes a cell structure including a first electrode layer, a second electrode layer, and a separation layer disposed between the first electrode layer and the second electrode layer, where the cell structure may include a plurality of pattern units having different sizes from each other and a connecting portion which connects the pattern units to each other.

Abstract: A battery on a conductive metal wire and components of a battery on a conductive metal wire of circular cross section diameter of 5-500 micrometers and methods of making the battery and battery components are disclosed. In one embodiment, the battery features a porous anode or cathode layer which assist with ion exchange in batteries. Methods of forming the porous anode or cathode layer include deposition of an inert gas or hydrogen enriched carbon or silicon layer on a heated metal wire followed by annealing of the inert gas or hydrogen enriched carbon silicon layer. Energy storage devices having bundles of batteries on wires are also disclosed as are other energy storage devices.

Abstract: A seal tape capable of preventing an electrode assembly from moving in a secondary battery, and a secondary battery using the same are disclosed. The seal tape for a secondary battery is attached to the outer surface of the electrode assembly which is received in a battery case, and includes a first adhesive layer having an adhesive surface adhered to the outer surface of the electrode assembly, and a second adhesive layer having an adhesive layer at a side opposite to the first adhesive layer so as to adhere to the inner surface of the battery case.

Abstract: Disclosed is a secondary battery including an electrode assembly, a casing and a cover assembly. In the electrode assembly, a cathode plate and an anode plate are arranged to face each other through a separator. The casing is adapted to house the electrode assembly therein. The cover assembly includes a metallic cover welded to an open end of the casing.

Abstract: A cable-type secondary battery, includes an electrode assembly including first and second polarity electrodes with a thin and long shape, each electrode having a current collector whose cross-section perpendicular to its longitudinal direction is a circular, asymmetrical oval or polygonal shape, and an electrode active material applied onto the surface of the current collector, and a separator or an electrolyte layer interposed between the first and second polarity electrodes; and a cover member surrounding the electrode assembly. Also, the cable-type secondary battery is provided with a first polarity terminal and a second polarity terminal connected to the first polarity electrode and the second polarity electrode, respectively, at the end of the cable-type secondary battery; and a housing cap configured to fix the first and second polarity terminals and cover the end of the cable-type secondary battery.

Abstract: The present disclosure relates to an electrochemical device and a battery module having improved anti-vibration. In the electrochemical device and the battery module according to one embodiment of the present disclosure which are mounted in electrically powered tools or other equipments, tap holders for providing vibration-resistance are provided on the outer surface of a cathode tap or an anode tap exposed to the outside of the electrochemical device or the battery module, thereby dispersing external force applied to the cathode tap or the anode tap to prevent the cathode tap or the anode tap from being damaged, and immobilizing the cathode tap or the anode tap to prevent an external short circuit, and eventually to improve the stability of the electrochemical device and the battery module.

Abstract: Disclosed is the structure of a center pin inserted into the winding center of a winding-type electrode assembly of an electrochemical device, which has a case containing the winding-type electrode assembly. The center pin can be manufactured through a simple process and can secure the safety of an electrochemical device when physical impact (e.g. squeezing, shock) is applied from the outside or when the internal temperature rises. The center pin is manufactured by winding a planar substrate, which has at least two protrusions formed in an embossing type or which has at least two scores formed in a predetermined shape, into a tubular shape.

Abstract: The present invention relates to an anode for a secondary battery, comprising at least two anode wires which are parallel to each other and spirally twisted, each of the anode wires having an anode active material layer coated on the surface of a wire-type current collector; and a secondary battery comprising the anode. The anode of the present invention has an increased surface area to react with Li ions during a charging and discharging process, thereby improving the rate characteristics of a battery, and also release stress or pressure applied in the battery, e.g., the volume expansion of active material layers to prevent the deformation of the battery and ensure the stability thereof, thereby improving the life characteristic of the battery.

Abstract: The invention relates to an electrical energy storage system (100) comprising at least one coiled electrical energy storage element placed inside an envelope (200), said envelope (200) containing the coiled electrical energy storage element in a main body (210) of the envelope (200) and including at least one lid (230, 240), characterized in that said lid (230, 240), placed at one end of the main body of the envelope (200) and electrically connected by electrical connection means (280) to the coiled electrical energy storage element, is fastened to the main body (210) of the envelope (200) by a bonding means (600). The invention is particularly applicable in the production of electrical energy storage assemblies such as supercapacitors, batteries or generators.

Abstract: The present invention relates to the application of a force to enhance the performance of an electrochemical cell. The force may comprise, in some instances, an anisotropic force with a component normal to an active surface of the anode of the electrochemical cell. In the embodiments described herein, electrochemical cells (e.g., rechargeable batteries) may undergo a charge/discharge cycle involving deposition of metal (e.g., lithium metal) on a surface of the anode upon charging and reaction of the metal on the anode surface, wherein the metal diffuses from the anode surface, upon discharging. The uniformity with which the metal is deposited on the anode may affect cell performance. For example, when lithium metal is redeposited on an anode, it may, in some cases, deposit unevenly forming a rough surface. The roughened surface may increase the amount of lithium metal available for undesired chemical reactions which may result in decreased cycling lifetime and/or poor cell performance.

Abstract: The present invention relates to a cable-type secondary battery having a horizontal cross section of a predetermined shape and extending longitudinally, comprising: a core for supplying lithium ions, which comprises an electrolyte; an inner electrode, comprising an open-structured inner current collector surrounding the outer surface of the core for supplying lithium ions, an inner electrode active material layer formed on the surface of the inner current collector, and an electrolyte-absorbing layer formed on the outer surface of the inner electrode active material layer; a separation layer surrounding the outer surface of the inner electrode to prevent a short circuit between electrodes; and an outer electrode surrounding the outer surface of the separation layer and comprising an outer electrode active material layer and an outer current collector.

Abstract: A positive electrode plate 5, a separator 7, and a negative electrode plate 6 are prepared. The positive electrode plate 5, the separator 7, and the negative electrode plate 6 are combined so as to form a spirally-wound electrode assembly 4. A winding end portion 9 of the electrode assembly 4 is fixed with a heat-sensitive adhesive (preferably, a heat-sensitive adhesive tape 10) whose adhesive force can be reduced by heating or cooling. The electrode assembly 4 is placed in an outer casing 1, and then the ambient temperature of the electrode assembly 4 is adjusted so that the electrode assembly 4 is loosened due to reduction in the adhesive force of the heat-sensitive adhesive. An electrolyte solution is injected into the outer casing 1.

Abstract: A nickel zinc battery cell includes a metallic zinc-based current collection substrate as a part of the negative electrode. The metallic zinc-based current collector may be made of or be coated with a zinc metal or zinc alloy material and may be a foil, perforated, or expanded material. Battery cells incorporating the zinc-based current collector exhibit good cycle lifetime and initial charge performance.

Abstract: A secondary battery including: an electrode assembly including a first electrode plate, a second electrode plate, and a separator interposed between the first electrode plate and the second electrode plate; a can accommodating the electrode assembly and an open end; and a cap assembly to seal the open end of the can. A step difference is formed in an upper end of the can. A supporter settled in the step difference is formed in the cap assembly. A bottom protrusion inserted into the can is formed on a bottom surface of the supporter. Therefore, ignition and explosion are prevented by a short between the electrode plates in accordance with the deformation of the electrode assembly so that the stability of the secondary battery may be improved.

Abstract: A cap assembly of a cylindrical rechargeable battery includes an integrated gasket obtained by integrating a first gasket covering a top cap, a PTC element, and a safety vent and a second gasket covering a CID. The rechargeable battery including the cap assembly has the advantages of increasing a contact area between a safety vent and a gasket by integrating the existing dual-gasket structure to thereby increase a sealing effect, increasing a short circuit reactivity of the CID by freely changing the gasket structure according to the diameter of the current interrupting member to thereby improve stability, simplify components, and reduce a production unit cost.

Abstract: A secondary battery includes an electrode assembly comprising a first electrode plate, a second electrode plate, and a separator located between the first electrode plate and the second electrode plate; a case accommodating the electrode assembly; and a cap assembly coupled to the case, wherein the cap assembly comprises a cap plate sealing the case and having a short-circuit hole, an inversion plate in the short-circuit hole of the cap plate, a connection plate covering the short-circuit hole of the cap plate, and an insulation layer on the inversion plate or the connection plate.

Abstract: The present invention relates to a cable-type secondary battery having a horizontal cross section of a predetermined shape and extending longitudinally, comprising: an inner electrode having an inner current collector and an inner electrode active material layer surrounding the outer surface of the inner current collector; a separation layer surrounding the outer surface of the inner electrode to prevent a short circuit between electrodes; and an outer electrode surrounding the outer surface of the separation layer, and having an outer electrode active material layer, an open-structured outer current collector and a conductive paste layer. The outer electrode having a conductive paste layer and an open-structured outer current collector according to the present invention has good flexibility to improve the flexibility of a cable-type secondary battery having the same. Also, the conductive paste layer is made of a light material, and thus can contribute to the lightening of the cable-type secondary battery.

Abstract: Provided is a sodium secondary battery including a graphite felt having a maximum porosity on a surface facing a solid electrolyte and a decreased porosity in a thickness direction, as a cathode current collector impregnated with an electrolyte.

Abstract: The present invention relates to a cable-type secondary battery having a horizontal cross section of a predetermined shape and extending longitudinally, comprising: a core for supplying lithium ions, which comprises an electrolyte; an inner electrode, comprising an open-structured inner current collector surrounding the outer surface of the core for supplying lithium ions, an inner electrode active material layer formed on the surface of the inner current collector, and an electrolyte-absorbing layer formed on the outer surface of the inner electrode active material layer; a separation layer surrounding the outer surface of the inner electrode to prevent a short circuit between electrodes; and an outer electrode surrounding the outer surface of the separation layer and comprising an outer electrode active material layer and an outer current collector.

Abstract: The present invention relates to a cable-type secondary battery having a horizontal cross section of a predetermined shape and extending longitudinally, comprising: a core for supplying lithium ions; an inner electrode, comprising a spiral electrode formed by spirally twisting two or more wire-type inner current collectors coated with an inner electrode active material on the surface thereof; a separation layer surrounding the outer surface of the inner electrode to prevent a short circuit between electrodes; and an outer electrode surrounding the outer surface of the separation layer, and comprising an outer electrode active material layer and an outer current collector. The core for supplying lithium ions is disposed in the inner electrode, from which the electrolyte of the core for supplying lithium ions can be easily penetrated into an electrode active material, thereby facilitating the supply and exchange of lithium ions.

Abstract: Packing seals made from a polyamide composition including at least polyamide 66 and polyamide 610 for alkaline batteries, optionally fillers and/or additives are described. The packing seals can be used in particular for standard “AAA” (LR03) and “AA” (LR6) batteries.

Abstract: A secondary battery includes an electrode assembly comprising a first electrode, a second electrode, and a separator between the first electrode and the second electrode; an external member wrapped around a side surface of the electrode assembly; a cover coupled to the external member; and a terminal protection member between the electrode assembly and the cover.

Abstract: A battery pack includes: a plurality of batteries; a circuit board electrically connected to the batteries; a cell guide between adjacent ones of the batteries, the cell guide including a first cell guide and a second cell guide, and the first cell guide and the second cell guide being disposed perpendicular to each other; and a case accommodating the plurality of batteries and the circuit board.

Abstract: Disclosed herein is a battery cell including an electrode assembly of a cathode/separator/anode structure, the electrode assembly being impregnated with electrolyte, the electrode assembly being chargeable and dischargeable, a battery case in which the electrode assembly is mounted, the battery case being made of aluminum or an aluminum alloy, and a protective coating layer applied to at least a portion of an outer surface of the battery case, the protective coating layer containing an electrically insulative polymer material.

Abstract: Disclosed is a non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode, a non-aqueous electrolyte, and a battery case containing them. The negative electrode includes SiOx where 0.5<x<1.5, and a carbon material. The non-aqueous electrolyte includes a halogenated cyclic carbonate. A ratio of mass b of the halogenated cyclic carbonate included in the non-aqueous electrolyte to mass a of the SiOx included in the negative electrode satisfies 0.001<b/a<3. A percentage of the SiOx to the total of the SiOx and the carbon material included in the negative electrode is preferably more than or equal to 3 mass % and less than 40 mass %.