Abstract: Provided is a cell in which the possibility of metallic foreign metal penetrating into an electrode assembly is reduced. The cell includes a rectangular cell case including a case main body and a lid member, an electrode assembly housed in the cell case, and an insulating film disposed between the cell case and the electrode assembly. The insulating film is in the form of a sheet, and is disposed between at least the electrode assembly and the bottom surface and the pair of long side surfaces of the cell case, and a pair of end portions of the insulating film in the height direction is located on the lid member side with respect to the electrode assembly. Incisions are provided in a thickness direction of the insulating film, and end portions with respect to the incisions constitute inclined surfaces which incline toward the electrode assembly side.

Abstract: A sealed battery includes a battery case including a mounting hole, an internal terminal disposed in the battery case and including a shaft portion inserted through the mounting hole, an external terminal disposed on an outside of the battery case and including an insertion hole through which the shaft portion of the internal terminal is inserted, and a gasket and an insulator interposed between the battery case and the internal terminal and between the battery case and the external terminal to insulate the internal terminal and the external terminal from the battery case. The shaft portion of the internal terminal is fastened to the insertion hole of the external terminal. The external terminal includes a raised portion provided around a portion of the external terminal onto which the shaft portion of the internal terminal is fastened.

Abstract: A battery pack is provided. The battery pack includes an exterior case and an article of an electric system including a battery. The article is configured to be accommodated in the exterior case. The article of the electric system is coated with a thin film coating agent. The article of the electric system includes the battery, a circuit board, and an electrode tab configured to electrically connect the battery or connect between the battery and the circuit board.

Abstract: A reusable battery indicator comprises a voltage sensor configured to convert sensed analog characteristics of a battery to digital information; a communication circuit communicatively connected to the voltage sensor; an antenna operatively coupled to the communication circuit; and a connection mechanism having at least a first connector and a second connector that are electrically connected to the voltage sensor, the first connector and the second connector being adapted to be removably connected to a first battery terminal and to a second battery terminal, respectively, thereby completing an electrical circuit between the voltage sensor and the first and second battery terminals when the connection mechanism is coupled to the first battery terminal and to the second battery terminal.

Abstract: An object of the invention is to provide a lid for storage battery comprising a terminal having a rectangular parallelepiped shape and a cavity portion, and a nut having a rectangular parallelepiped shape and being inserted into the cavity portion. The terminal has a first through-hole extending from an upper surface toward a lower surface of the terminal and a second through-hole extending from a front surface toward a rear plate portion of the terminal. The nut has a first screw hole extending from an upper surface toward a lower surface of the nut, and a second screw hole extending from a front surface toward a back surface of the nut, the first and second screw holes communicating with the first and second through-holes of the terminal, respectively. A direction in which the first screw hole extends does not intersect with a direction in which the second screw hole extends.

Abstract: A rechargeable battery includes: a case; an electrode assembly accommodated in the case; a cap plate sealing a top opening of the case; and a first electrode terminal. The first electrode terminal includes a first terminal pillar electrically connected to the electrode assembly and passing through the cap plate to upwardly protrude therefrom, and a first terminal plate having a first terminal opening. The first terminal pillar has a slit groove extending along its outer periphery at an upper end thereof, and the first terminal plate includes a protruding portion which protrudes into the first terminal opening and is in the slit groove of the first terminal pillar to couple the first terminal plate to the first terminal pillar.

Abstract: In a secondary battery, a positive electrode current collecting portion and a negative electrode current collecting portion are bonded with a part of a positive electrode current collector exposed portion and a part of a negative electrode current collector exposed portion of a laminated electrode body, respectively. A bonding portion between the positive electrode current collecting portion and the positive electrode current collector exposed portion, and a bonding portion between the negative electrode current collecting portion and the negative electrode current collector exposed portion are formed at positions at which, when the full length in a short side direction of each of the current collector exposed portions of the positive electrode and the negative electrode is set as L, a distance from the end close to the lid in the short side direction is less than L/2.

Abstract: Disclosed is a battery system, including: a plurality of battery modules provided in a space formed between an upper casing and a lower casing; connection busbars respectively connected to terminals of the battery modules; an intermediate busbar connected to the connection busbars such that the connection busbars are electrically connected to each other; and an insulation protector provided with opposite end portions attached to the upper casing, and with a holding portion placed below the intermediate busbar at a position between the opposite end portions.

Abstract: Methods and systems for providing battery backup power to a home or other building are disclosed. Methods and systems include a fluid container holding an electrolyte solution. The electrolyte solution is prevented from flowing through an array of galvanic cells having annular flow paths via a fluid flow control mechanism, such as a valve, which is energized by an external power source. When the external power source is removed, such as during a power outage, the fluid flow control mechanism is deenergized and electrolyte solution is allowed to flow through the galvanic cell array, generating electric current. Energy produced by the system then powers the home or other building until the external power source returns, which in turn closes the fluid flow control mechanism and ceases energy production by the system.

Abstract: A membrane electrode assembly manufacturing device includes a loading apparatus for supplying an MEA roll on which a membrane electrode assembly is arranged by a predetermined pitch, a hot press apparatus for pressing a surface corresponding to the membrane electrode assembly of the MEA roll at a set temperature, a buffer apparatus to which the MEA roll is supplied to one side and exhausted at the other side, and for performing a buffer function of absorbing a difference between supply and exhaustion, and a cutting apparatus for cutting a portion of the membrane electrode assembly arranged at the MEA roll.

Abstract: An energy storage device includes: an electrode assembly, wherein electrodes each including a covered portion which is covered by an active material layer and a non-covered portion which extends from the covered portion and is not covered by the active material layer are stacked on each other such that the covered portions overlap with each other and the non-covered portions overlap with each other, and the electrode assembly having a non-covered stacked portion where the non-covered portions are stacked on each other; a protective plate being brought into face contact with the non-covered stacked portion from one side in a stacking direction of the non-covered stacked portion; a current collector including a bonding portion which is brought into face contact with the non-covered stacked portion from an other side in the stacking direction, and an enlarged width portion extending from the bonding portion.

Abstract: A connection member and a rechargeable battery are provided. The connection member includes a guide plate, two first connection plates and a second connection plate; the two first connection plates are respectively connected to two sides of the guide plate in a width direction and are arranged bendably with respect to the guide plate; the second connection plate is connected to an upper end of the guide plate in a height direction Z, and the top ends of the two first connection plates are at different heights. In some examples, overcurrent capability of the connection member and rapid charging capability and safety performance of the rechargeable battery can be improved.

Abstract: In order to provide a power supply device having a high rigidity and a light weight, power supply device includes: one or more cell stacked bodies each formed by stacking secondary battery cells; a circuit board including a control circuit electrically connected to the cell stacked bodies; resin-made battery case for storing the cell stacked bodies and circuit board; metal-made lower frame for covering the bottom surface of battery case; and metal-made upper frame for covering the upper surface of battery case. Battery case has a waterproof structure. Battery case is grasped by connecting upper frame to lower frame.

Abstract: A secondary battery includes a retainer and/or an insulation plate having bilateral symmetry, thereby improving work efficiency and productivity. In one or more exemplary embodiments, the secondary battery includes: an electrode assembly; a case receiving the electrode assembly; a cap plate coupled to a top portion of the case and sealing the case; a current collector including a terminal connector positioned between the electrode assembly and the cap plate, and an electrode connector bent from an end of the terminal connector, positioned between the electrode assembly and the case, and having a coupling hole formed therein; an insulation plate positioned on the electrode assembly and coupled to the terminal connector; and a retainer coupled to the electrode connector and including a fixing hook engaged with the coupling hole.

Abstract: The present disclosure provides an electrode lead that ensures safety of a secondary battery when gas is generated within the secondary battery. The electrode lead is included in a pouch-type secondary battery in which outer circumferential parts of a pouch casing are sealed and an electrode assembly is accommodated in a center part of the pouch casing.

Abstract: Embodiments of the present invention are directed toward a rechargeable battery including: an electrode assembly including a first electrode and a second electrode, each of which includes an electrode plate and an electrode uncoated region; a case for accommodating the electrode assembly and having an opening; a cap assembly coupled to the opening to seal the case; and a current collecting member between the cap assembly and the electrode assembly and respectively coupled to an electrode uncoated region of the first electrode and an electrode uncoated region of the second electrode. The current collecting member includes a first current collector that faces one side of the cap assembly, a second current collector that contacts the electrode uncoated region, and a connecting portion that is shifted toward one side of the first current collector and connects the first and second current collectors.

Abstract: Provided is an energy storage device which can easily fix plates of an electrode assembly to a container. An energy storage device (10) includes: an electrode assembly (500) formed by stacking plates; and a container (100) which accommodates the electrode assembly (500), wherein the container (100) includes: a body portion (200); and a conductive terminal portion (300) connected to the body portion (200), and the terminal portion (300) includes a first portion (310) and a second portion (320) which sandwich the plates therebetween.

Abstract: A battery includes a first electrode layer; and a second electrode layer disposed on the first electrode layer and serving as a counter electrode for the first electrode layer, wherein the first electrode layer includes a first current collector, a first active material layer, and a first solid electrolyte layer, the first active material layer is disposed to be in contact with the first current collector and to occupy a smaller area than the first current collector, the first solid electrolyte layer is disposed to be in contact with the first current collector and the first active material layer and to occupy the same area as the first current collector, the first active material layer faces the second electrode layer with the first solid electrolyte layer therebetween, and the first electrode layer includes a peripheral portion including a first rounded portion.

Abstract: A secondary battery, including a case including an internal space; an electrode assembly in the case, the electrode assembly having a current collection tab drawn from a positive electrode plate, a current collection tab drawn from a negative electrode plate, and a separator between the positive electrode plate and the negative electrode plate; an electrode terminal electrically connected to each of the current collection tab; an insulation plate between the electrode assembly and the electrode terminal; and a cap plate exposing the electrode terminal, the cap plate sealing the case, the insulation plate including one or more protrusions on a surface facing the cap plate.

Abstract: A terminal block in which outflow of a sealing portion made of a rubber-based adhesive can be suppressed even when exposed to a heated environment, and the sealing properties can be maintained. The terminal block includes a housing having a resin portion, a bus bar, and the sealing portion. The bus bar integrally includes an embedded portion embedded in the resin portion, and a connecting portion projecting outward from the resin portion. The sealing portion fills a gap between the embedded portion and the resin portion. The sealing portion is made of a rubber-based adhesive. The bus bar includes a base material made of Cu or a Cu alloy, and an Sn-based plated layer made of Sn or an Sn alloy and partially covering a surface of the base material. The base material is exposed at a sealing region in contact with the sealing portion.

Abstract: A rechargeable battery includes: a case accommodating an electrode assembly; a cap plate closing and sealing an opening of the case; an electrode terminal including a rivet terminal being coupled to the electrode assembly and extending through a terminal opening in the cap plate, and a plate terminal being at an outer surface of the cap plate and coupled to the rivet terminal; and an insulating member electrically insulating the electrode terminal from the cap plate, the insulating member including a first insulator and a second insulator. The first insulator being between the cap plate and the plate terminal at an outer periphery of the rivet terminal, and the second insulator being coupled to the first insulator at an outer periphery of the first insulator and between the cap plate and the plate terminal.

Abstract: In an all-solid-state battery including at least one short-circuit current shunt part and at least one electric element which are stacked, when the battery is constrained, cracking etc. of the adhesive in the short-circuit current shunt pail is prevented.

Abstract: A rechargeable battery includes an electrode assembly including first and second electrodes, a case in which the electrode assembly is accommodated, a cap plate combined to an opening of the case, the cap plate including a first terminal hole and a second terminal hole, a first electrode terminal passing through the first terminal hole of the cap plate and a second electrode terminal passing through the second terminal hole of the cap plate, and a lead tab connecting the electrode assembly to the second electrode terminal. The second electrode terminal includes a press-fit portion protruding therefrom, the press-fit portion being press-fitted to the second terminal hole of the cap plate.

Abstract: An electrolytic capacitor includes an anode body with a dielectric layer; a solid electrolyte layer in contact with the dielectric layer; and an electrolytic solution. The solid electrolyte layer includes a ?-conjugated conductive polymer and a first sulfonic acid. The electrolytic solution includes a solvent and an acid component. And the acid component includes a second sulfonic acid.

Abstract: A battery pack includes battery modules and a base member on which the battery modules are mounted. The battery modules include a plurality of unit cells are stacked in a thickness direction, have a flat shape and positive and negative terminals for transferring input and output of electric power. The terminals are disposed on an opposite side of the base member side in the battery module. The unit cells include a cell body that includes a power generation element and an electrode tab. The battery module includes a pair of first cover members in the stacking direction and a pair of second cover members in a direction that intersects with the stacking direction and that intersects with a direction in which the electrode tab extends. The second cover members are joined to the first cover members while the stacked unit cells are pressurized in the stacking direction.

Abstract: Provided is a secondary cell which is resistant to vibration and impact. The secondary cell includes a flat wound group supported, through an insulator, at a lid on which external terminals are arranged, and a cell case for housing the flat wound group. In the secondary cell, a flat portion of the flat wound group has a gap between the flat portion and a wide surface of the cell case, and is held on the wide surface near a cell case bottom through a holding portion.

Abstract: A lithium-ion battery module includes a housing having a plurality of partitions configured to define a plurality of compartments within a housing. The battery module also includes a lithium-ion cell element provided in each of the compartments of the housing. The battery module further includes a cover coupled to the housing and configured to route electrolyte into each of the compartments. The cover is also configured to seal the compartments of the housing.

Abstract: A capacitor component includes a capacitor body including dielectric layers and first and second internal electrodes alternately stacked; and a connection terminal coupled to the capacitor body and including a buffer member having insulating properties and at least one conductive fiber portion penetrating through the buffer member.

Abstract: A secondary battery includes: an electrode assembly; a case accommodating the electrode assembly; an electrode tab extending from the electrode assembly; a sealing part for insulating the electrode tab from the case; and an insulation film around the electrode tab and between the sealing part and the electrode assembly.

Abstract: A cylindrical battery including an electrode body in which a negative electrode plate and a positive electrode plate to which a plurality of positive electrode leads is connected are wound with a separator interposed therebetween; an upper insulating plate disposed on the electrode body; a positive electrode current collector plate disposed on the upper insulating plate; a sealing body; and an outer can. A first positive electrode lead extends between the upper insulating plate and the current collector plate after passing through a through-hole of the upper insulating plate and is bent onto the current collector plate at an outer circumference portion thereof, and a second positive electrode lead extends along the outside of an outer circumference portion of the upper insulating plate and is bent onto the current collector plate at the outer circumference portion thereof. Those positive electrode leads are all connected to the current collector plate.

Abstract: A secondary battery is disclosed. In one aspect, the secondary battery includes an electrode assembly and a case comprising an accommodation region configured to accommodate the electrode assembly. The accommodation region has a first width in a center area thereof and a second width in opposing ends thereof, and wherein the second width is greater than the first width. When the case configured to accommodate the electrode assembly is formed, formation errors caused by concentration of stress such as tearing of a raw material or thickness deviations may be prevented.

Abstract: A frame body for a cell frame of a redox flow battery, the frame body including an outer peripheral portion, the outer peripheral portion including a thin region whose thickness gradually decreases in a direction from the center of the frame body toward the outer periphery of the frame body.

Abstract: A secondary battery including an electrode body that includes a positive electrode plate and a negative electrode plate, an outer body that houses the electrode body, a metal sealing plate that seals an opening of the outer body, a positive electrode collector electrically connected to the positive electrode plate and the sealing plate, a negative electrode external terminal connected to the negative electrode plate through a negative electrode collector. In the secondary battery, a first projection and a second projection are formed on a surface of the sealing plate on a battery inner side, the positive electrode collector includes a first opening and a cut-out, the first projection is disposed in the first opening, the first projection and an edge portion of the first opening is welded and connected to each other, and the second projection is disposed in the cut-out.

Abstract: A lithium-ion battery cell includes an enclosure that includes a casing and a lid. The enclosure has an electrolyte fill hole disposed on a surface of the casing opposite the lid. An electrochemical cell is disposed within the enclosure. Additionally, a sealing patch is laser welded to the surface of the casing around the electrolyte fill hole, wherein the sealing patch is configured to seal the electrolyte fill hole.

Abstract: A battery module according to an embodiment of the present disclosure includes a cell cartridge assembly including at least one battery cell and a plurality of stacking cartridges configured to respectively accommodate the at least one battery cell and arranged in layers in a height direction; and a sensing assembly mounted on at least one side of the cell cartridge assembly and configured to sense electrical characteristics of the at least one battery cell. Each of the stacking cartridges includes a bolt-assembling finger protruding from at least one corner area beyond other corner areas, and the bolt-assembling finger includes an assembly guide unit provided in a slot form. The sensing assembly includes a sensing assembly body provided in the form of a plate-shaped structure and having a plurality of sensing members mounted thereon, and an assembling plate integrally formed with the sensing assembly body and capable of being inserted into the assembly guide unit of the bolt-assembling finger.

Abstract: A conductive member module includes a flat cable that includes a plurality of conductors and an insulating coating covering the conductors, a distal end part of each of the conductors being exposed from the coating, and a plurality of conductive members each of which includes a plate-shaped main body and a conductor holding part, the main body being connected to a portion of each of the conductors exposed from the coating by welding, the conductor holding part being separated from the main body at other sides except for one side connected to the main body by cutting in the main body and being folded back toward the main body to hold a portion of each conductor closer to a base end side than a part welded to the main body, the conductive members being continuously arranged along an extending direction of the flat cable.

Abstract: A hermetic packaging member for packaging and sealing an electrode assembly of an electrochemical device includes an edge unit and a receiving unit having a predetermined depth in a thickness direction of the hermetic packaging member from the edge unit to receive the electrode assembly therein. The receiving unit includes a slope portion connected to the edge unit and a plateau portion surrounded by the slope portion. The slope portion includes a plurality of ridges and a plurality of valleys defined between the plurality of ridges.

Abstract: A lithium-ion secondary battery that includes a positive electrode including a sulfur-based positive active material containing at least sulfur and a negative electrode including a silicon-based negative active material containing at least silicon or a tin-based negative active material containing tin, in which lithium ions are easily implanted and moved. A positive electrode includes a positive current collector and a sulfur-based positive active material containing at least sulfur (S). A negative electrode includes a negative current collector and a silicon-based negative active material containing at least silicon (Si) or a tin-based negative active material containing tin (Sn). The positive current collector is made of an aluminum foil having a plurality of through holes. The negative current collector is made of a copper foil having a plurality of through holes. The positive electrode and the negative electrode are stacked via a separator to form an electrode group.

Abstract: A rechargeable battery including: an electrode assembly; a case containing the electrode assembly; a cap plate covering an opening of the case; a terminal extending outside the cap plate; a lead tab connecting the electrode assembly to the terminal; and a retainer coupled to the lead tab inside the case and arranged between the lead tab and the case, the retainer including an insertion guide facing away from the electrode assembly and being inclined toward the electrode assembly in a direction extending away from the cap plate.

Abstract: A secondary battery is provided including an electrode assembly including a first electrode plate, a second electrode plate, and a separator; a case containing the electrode assembly; a first current collector electrically connected to the first electrode plate; a first terminal electrically connected to the first current collector; a second current collector electrically connected to the second electrode plate; and a second terminal electrically connected to the second current collector, wherein a plating is on a portion of at least one of the first terminal or the first current collector at which the first terminal contacts the first current collector.

Abstract: A battery includes a power generation component including a positive electrode, a negative electrode, and an electrolyte, and a battery case accommodating the power generation component. The negative electrode includes a first lead (17) having a single layer structure whose main component is nickel, and a second lead (18) having a layered structure including a Ni layer (18a) whose main component is nickel and a Cu layer (18b) whose main component is copper. The battery includes a layered portion (35) formed of the leads that are superposed such that the Ni layer (18a) of the second lead (18) faces the first lead (17). Part of the layered portion (35) is welded to an inner surface of the battery case with the first lead (17) at the layered portion (35) being disposed on a battery case side.

Abstract: An electrochemical cell includes a cell element and a casing configured to receive the cell element, the casing having a wall with a first terminal opening. The electrochemical cell includes a first terminal having a terminal post extending through the first terminal opening along a longitudinal axis of the terminal post, a first gasket extending into an interior of the casing and disposed radially between the terminal post and the wall to electrically insulate the terminal post from the wall, a second gasket extending exterior to the casing, positioned axially adjacent to the first gasket with respect to the longitudinal axis, and disposed radially between the terminal post and the wall to electrically insulate the terminal post from the wall, and a press ring disposed exterior to the casing and radially between the second gasket and the terminal post. The electrochemical cell also includes a second terminal.

Abstract: An exemplary battery assembly includes, among other things, a rail of a first cell assembly received within a slot of a second cell assembly to secure the first and a second cell assemblies relative to each other. A rail terminal is disposed within a rail surface that faces back toward an electrode structure of the first cell assembly. An exemplary battery cell securing method includes, among other things, positioning a rail of a first cell assembly within a slot of a second cell assembly to secure the first and second cell assemblies relative to each other. The rail has a rail surface that faces back toward an electrode structure of the first cell assembly, and a rail terminal disposed within the rail surface.

Abstract: There is provided a secondary battery including a case having an internal space, an electrode assembly inserted into the case and including a first electrode plate, a second electrode plate, and a separator between the first electrode plate and the second electrode plate, an electrode tab electrically connected to the electrode assembly, a cap plate sealing the case, a current collector electrically connected to the electrode tab, an electrode terminal electrically connected to the current collector and configured to pass through the cap plate to protrude toward the outside, and a connector having an end coupled to the electrode assembly and an other end coupled to the current collector.

Abstract: A battery terminal (A) includes a terminal main body (10). Left and right fastening pieces (36) are formed on the terminal main body (10) and are deformable to be held in close contact with an outer periphery of a battery post (P). A cam member (51) have left and right pressing surfaces (56) capable of pressing outer side edges of the pair of fastening pieces (36) and are inclined with respect to an axis line of the battery post (P). Fastening members (fastening bolt (58) and nut (61)) vertically displace the cam member (51) with the pressing surfaces (56) held in contact with the outer side edges of the fastening pieces (36). Inclination restricting portions (16) are formed on the terminal main body (10) and restrict lateral inclination of the cam member (51). The cam member (51) is slidable in contact with the inclination restricting portions (16).

Abstract: A lead-acid battery includes an electrode plate assembly, a battery case, a positive electrode strap, a negative electrode strap, a positive electrode post, a negative electrode post, a cover, and an electrolyte solution. A negative electrode bushing provided in the cover and the negative electrode post together constitute a negative electrode terminal. A maximum value of a gap between an outer circumferential surface of the negative electrode post and an inner circumferential surface of the negative electrode bushing in the negative electrode terminal is 0.5 mm or more and 2.5 mm or less. A rib is provided in a lower part of the negative electrode bushing, and a minimum value of a protrusion height of the rib is 1.5 mm or more and 4.0 mm or less. A distance between a surface of the electrolyte solution and a lowermost portion of the negative electrode bushing is 15 mm or less.

Abstract: Provided is a lithium or sodium metal battery having an anode, a cathode, and a porous separator and/or an electrolyte, wherein the anode contains a graphene-metal hybrid foam composed of multiple pores, pore walls, and a lithium- or sodium-attracting metal residing in the pores; wherein the metal is selected from Au, Ag, Mg, Zn, Ti, Na (or Li), K, Al, Fe, Mn, Co, Ni, Sn, V, Cr, or an alloy thereof and is in an amount of 0.1% to 90% of the total hybrid foam weight or volume, and the pore walls contain single-layer or few-layer graphene sheets, wherein graphene sheets contain a pristine graphene or non-pristine graphene selected from graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, doped graphene, chemically functionalized graphene, or a combination thereof.

Abstract: A secondary battery, including an electrode assembly; a case accommodating the electrode assembly; a cap plate sealing the case; at least one electrode terminal including a terminal plate on the cap plate and a terminal pin passing through the cap plate and the terminal plate and electrically connected to the electrode assembly; and at least one groove on a top surface of the terminal plate; a top portion of the terminal pin is bent for insertion into the at least one groove.

Abstract: A rechargeable battery includes an electrode assembly; a case accommodating the electrode assembly; a cap plate covering the case and including an injection hole sealed by a ball; and a terminal plate covering the injection hole and the ball.

Abstract: An electrode assembly includes: an electrode plate which is wound together with an electrode plate having a different polarity and then formed in a form of a jelly roll and includes a plurality of non-coated portions that are spaced apart from each other; and a plurality of tabs attached to the plurality of non-coated portions, respectively, in which the plurality of non-coated portions includes a first non-coated portion having a set or predetermined width, and a second non-coated portion having a different width from the width of the first non-coated portion. According to the exemplary embodiments of the present invention, it is possible to more easily align and bond multiple tabs, and weld the multi-tab structure to a CID (or a can). Furthermore, it is possible to increase an output of a secondary battery by reducing resistance of the battery.