Abstract: A battery housing includes: an exterior member; and a first terminal of a non-metallic material, wherein the first terminal has a first end extending to outside of the exterior member, the first terminal has a second end extending to inside of the exterior member, the first terminal includes a first long-diameter part having a first long diameter and a second long-diameter part having a second long diameter larger than the first long diameter, the first long-diameter part and the second long-diameter part being disposed between the first end of the first terminal and the second end of the first terminal, and the first long-diameter part and the second long-diameter part are embedded in the exterior member.

Abstract: An energy storage apparatus includes an energy storage device, an outer covering. The energy storage apparatus further includes an external connection terminal having a connecting portion to which external equipment is connected; and a conductive member assembled to the external connection terminal, and electrically connected to the energy storage device. The external connection terminal and the conductive member assembled to each other are sealed by the outer covering, the connecting portion of the external connection terminal is exposed from the outer covering, and a portion of the external connection terminal other than the connecting portion is sealed by the outer covering.

Abstract: An electrode terminal, a cover assembly and a battery comprising the cover assembly are provided. The electrode terminal comprises: a terminal pole portion, and a pole cap portion formed on an end of the terminal pole portion, and a buffering structure disposed on a surface of the pole cap portion facing to the terminal pole portion.

Abstract: A fastening structure according to the present invention includes a bolt member, a nut member, and an anti-rotation member, wherein one of the bolt member and the nut member is attached so as to permit its displacement toward the other member side, and the one member or the anti-rotation member is formed to allow a maximum engaging width to be reduced as the one member is displaced toward the other member side.

Abstract: An electrochemical accumulator including: at least one electrochemical cell made of at least one cathode and one anode and, on either side of an electrolyte, two current collectors, one of which is connected to the anode and the other to the cathode; a housing made of aluminium alloy arranged such as to sealingly contain the electrochemical cell(s); two current-output terminals, one of which is welded to a wall of the housing, the output terminal welded to the housing being made of an aluminium alloy having a magnesium content (Mg) that is no lower than 0.01% and no higher than 4%, and a copper content that is no lower than 0.05% and no higher than 0.3%, the aluminium alloy of the output terminal welded to the housing having a metallurgical state which grants same a breaking strength (Rm) of no less than 60 MPa.

Abstract: The present disclosure provides an energy storage device comprising at least one electrochemical cell comprising a negative current collector, a negative electrode in electrical communication with the negative current collector, an electrolyte in electrical communication with the negative electrode, a positive electrode in electrical communication with the electrolyte and a positive current collector in electrical communication with the positive electrode. The negative electrode comprises an alkali metal. Upon discharge, the electrolyte provides charged species of the alkali metal. The positive electrode can include a Group IIIA, IVA, VA and VIA of the periodic table of the elements, or a transition metal (e.g., Group 12 element).

Abstract: A single cell for a battery includes electrodes, preferably electrode foils, which are arranged within a cell housing. A current output lug is electrically connected to each electrode, and at least electrodes of opposite polarity are separated and electrically insulated from one another by a separator, preferably a separator foil. Current output lugs having the same polarity are electrically conductively connected to a pole, wherein the respective poles are guided from the interior of the cell housing to the outside. Each pole is electrically conductively connected to an electrically conductive area on an outer side of the cell housing, wherein the relevant two areas of different polarity are electrically insulated from one another. The pole lugs which are arranged on the relevant areas project in a free-standing manner out of the cell housing.

Abstract: In a prismatic secondary battery, an internal negative electrode terminal is electrically connected to a collector through through-holes formed in a sealing plate, a gasket, and an insulating member in a manner electrically insulated from the sealing plate. The sealing plate has one face on which a protrusion is formed, an insulating plate has a face that is on the sealing plate and on which a concave portion fitted to the protrusion is formed, each of the protrusion and the concave portion of the insulating plate is provided at one position on respective sides of the through-hole, and at least one of the protrusions has a top face on which a concave portion is formed. The battery having such a structure is unlikely to cause rotary displacement between the insulating plate and the sealing plate even when a rotary torque is applied to the internal terminal.

Abstract: According to an embodiment, a battery includes a cap plate, the cap plate having an opening penetrating therethrough and having at least a first protrusion extending from a first side, an electrode terminal extending through the opening in the cap plate, a collector extending from the electrode terminal, and a gasket interposed between a portion of the electrode terminal and the first side of the cap plate, the first protrusion extending through the gasket and the collector.

Abstract: A system includes a battery cell having a packaging and a coil disposed within the packaging. The battery cell further includes a first terminal electrically coupled to a portion the coil and protruding through an opening in the packaging, wherein the first terminal is hermetically sealed at the opening in the packaging using a compressive force.

Abstract: A lithium secondary battery includes an electrode assembly having at least one tab which projects from one side of the electrode assembly, an external finishing material surrounding and sealing the tab except a distal end portion thereof and the electrode assembly, and polymer films interposed between the external finishing material and the tab to improve adhesion therebetween. When the tab has a thickness no less than a predetermined thickness, the tab is formed to have a sectional shape which ensures that an inside angle defined by one of upper and lower surfaces of the tab and an adjacent side surface of the tab becomes an obtuse angle, and the polymer films are formed to have protuberances on the inner surfaces thereof, so as to improve bondability between the tab and the polymer films.

Abstract: Disclosed is a rechargeable battery that can improve sealing performance of a gasket and prevent a cap assembly from rotating with respect to a case. The rechargeable battery includes an electrode assembly that includes an anode, a cathode, and a separator interposed between the anode and the cathode, a case that accommodates the electrode assembly, a cap assembly that is coupled with the case to close and seal the case and that has an electrode terminal, and a gasket that is provided between the cap assembly and the case. A protrusion is formed at a surface of the gasket. A ratio of a height of the protrusion to a half-width of the protrusion is about 0.5 to 0.8.

Abstract: Battery parts having retaining and sealing features and associated assemblies and methods are disclosed herein. In one embodiment, a battery part includes a base portion that is configured to be embedded in battery container material of a corresponding battery container. The battery part and base portion include several torque resisting features and gripping features that resist torsional or twist loads that are applied to the battery part after it has been joined to the battery container. For example, the base portion can include several internal and external torque resisting features and gripping features that are configured to resist twisting or loosening of the battery part with reference to the battery container material, as well as prevent or inhibit fluid leakage from the battery container.

Abstract: A lithium ion secondary battery is provided having a cap plate, an insulation plate, and a terminal plate, each shaped to prevent the terminal plate from rotating when assembling a cap assembly. The cap plate has an anti-rotation groove formed on a lower surface thereof and the insulation plate has an insulation plate protrusion formed on an upper surface thereof. When the anti-rotation groove is coupled to the insulation plate protrusion, the terminal plate may be prevented from rotating.

Abstract: A battery may have a foil battery pack with leads that are coupled to a printed circuit board. Battery protection structures formed from an insulating material such as plastic may be used to protect the foil battery pack. The foil battery pack may have a rectangular shape with front and rear faces surrounded by a rectangular peripheral edge. The battery protection structures may have a ring shape that surrounds the peripheral edge while leaving the front and rear faces exposed to minimize the size of the battery protection structures. An elastomeric material may be used to form the battery protection structures. The elastomeric material may allow the battery protection structures to stretch when the battery pack expands during use. Two shots of plastic may be incorporated into the battery protection structures to provide both puncture resistance and the ability to stretch during use.

Abstract: Battery parts having retaining and sealing features and associated assemblies and methods are disclosed herein. In one embodiment, a battery part includes a base portion that is configured to be embedded in battery container material of a corresponding battery container. The battery part and base portion include several torque resisting features and gripping features that resist torsional or twist loads that are applied to the battery part after it has been joined to the battery container. For example, the base portion can include several internal and external torque resisting features and gripping features that are configured to resist twisting or loosening of the battery part with reference to the battery container material, as well as prevent or inhibit fluid leakage from the battery container.

Abstract: A secondary battery is disclosed. In one embodiment, the battery includes i) an electrode assembly and ii) first and second electrode tabs spaced apart from each other and extending from the electrode assembly, wherein the first and second electrode tabs have first and second outer surfaces, respectively. The battery may further include i) an electrolyte, ii) a movement prevention tape attached to at least a portion of at least one of the first and second outer surfaces, wherein at least part of the movement prevention tape is configured to become adhesive upon contacting the electrolyte and iii) a can accommodating the electrode assembly, electrode tabs and movement prevention tape.

Abstract: The present invention provides a battery that includes: a lid plate provided with a terminal pull-out through hole and a baffling portion whose upper surface is configured in a projecting and/or recessed manner; an auxiliary terminal configured such that a lower portion thereof is connected to a metallic foil of a power generating element by being fitted into a battery container through the terminal pull-out through hole, and sealed and fixed to the lid plate by insulating and sealing members; a connecting conductor connected and fixed to an upper portion of the auxiliary terminal; and an external terminal having a bolt portion that projects upward from a base portion, the bolt portion being inserted through the terminal through hole of the connecting conductor from below, and the base portion being engaged with the baffling portion of the lid plate, thereby restricting rotation centering an axial line of the bolt portion.

Abstract: A housing (610, 620) for a button-type battery (?) includes a cavity with resilient conductive terminals (300, 400) therein and a door (500) opposite the terminals (300, 400). When a battery (?) is pushed inside the cavity and the door (500) is moved to its closed position, the resilient terminals (300, 400) hold the battery (?) in place, applying a force urging the battery (?) against the door (500) to better maintain electrical contact. When the door (500) is moved to its open position, the resilient terminals (300, 400) push the battery (?) at least one fifth of its diameter out of the cavity, so a user can pull out the battery (?) by hand and change the battery (?) easily.

Abstract: The present invention provides a battery that includes: an auxiliary terminal configured such that a first tube is connected to a metallic foil of an electrode of a power generating element through a current collecting connector by being fitted into a battery container through a terminal pull-out through hole of a lid plate, and sealed and fixed to the lid plate by insulating and sealing members; a connecting conductor configured such that one end portion is connected and fixed to an upper portion of the auxiliary terminal, and provided with a terminal through hole on the other end portion; an external terminal having a bolt portion that projects upward from a base portion and inserted through the terminal through hole of the connecting conductor from below; and a baffling member fixed onto the lid plate and restricting rotation of the external terminal by engaging with the base portion of the external terminal.

Abstract: A battery includes a case housing an electrode assembly, the case having an opening for receiving the electrode assembly, a cap plate combined with the opening so as to close the case, a first insulator on an outer surface of the cap plate, an electrode terminal electrically connected to the electrode assembly, the electrode terminal extending through a first terminal hole in the cap plate and a second terminal hole in the first insulator, a first connection portion that mates the cap plate to the first insulator so as to oppose rotation of the first insulator relative to the cap plate, the first connection portion being eccentric with respect to a central line of the first terminal hole, and a second connection portion that mates the first insulator to the electrode terminal so as to oppose rotation of the electrode terminal relative to the first insulator.

Abstract: A protection circuit assembly and a battery pack including the same, which can simplify a manufacturing process and increase productivity. The protection circuit assembly includes a protection circuit board including a connection terminal, and a first lead plate connected to the connection terminal and having a coupling hole. The battery pack includes a bare cell having a protrusion, and a protection circuit assembly electrically connected with the bare cell and including a first lead plate having a coupling hole. Accordingly, the battery pack includes a protection circuit assembly including a lead plate having a coupling hole, and a bare cell including a structure inserted into the coupling hole, and thus it is possible to simplify a manufacturing process and increase productivity.

Abstract: Battery parts having retaining and sealing features and associated assemblies and methods are disclosed herein. In one embodiment, a battery part includes a base portion that is configured to be embedded in battery container material of a corresponding battery container. The battery part and base portion include several torque resisting features and gripping features that resist torsional or twist loads that are applied to the battery part after it has been joined to the battery container. For example, the base portion can include several internal and external torque resisting features and gripping features that are configured to resist twisting or loosening of the battery part with reference to the battery container material, as well as prevent or inhibit fluid leakage from the battery container.

Abstract: A rechargeable battery including an electrode assembly including a positive electrode, a negative electrode, and a separator therebetween; a case housing the electrode assembly; a cap plate sealing an opening of the case; and an electrode terminal installed in the cap plate, wherein the electrode terminal includes a first terminal section in a terminal hole of the cap plate, the first terminal being connected to the electrode assembly in the case and including a protruding portion that protrudes outwardly from the cap plate, the protruding portion having a receiving portion therein, a second terminal section in the receiving portion, the second terminal section protruding outwardly from the receiving portion, and a fastening member between an inner peripheral surface of the receiving portion and the second terminal section, the fastening member fastening the first terminal section and the second terminal section to each other.

Abstract: Disclosed herein is a secondary battery pack including a battery cell having an electrode assembly of a cathode/separator/anode structure mounted in a battery case together with an electrolyte in a sealed state, an insulative mounting member having openings, through which electrode terminals of the battery cell are exposed to the outside, the insulative mounting member being constructed in a structure in which a safety element is mounted to the top of the insulative mounting member, the insulative mounting member being in direct contact with the top of the battery cell, and an insulative cap coupled to the top of the battery cell such that the insulative cap surrounds the insulative mounting member while the safety element is mounted to the insulative mounting member, wherein the battery case is provided at the top thereof with at least one coupling groove, and the insulative mounting member is provided at the bottom thereof with at least one coupling protrusion corresponding to the at least one coupling groo

Abstract: A method for producing an assembled battery, comprising the following steps: (a) producing a plurality of unit cells; (b) arranging the plurality of unit cells in a nested manner such that one unit cell is disposed within another unit cell; and (c) electrically connecting the plurality of unit cells with one another in parallel or in series. The problem that toroidal batteries with high capacity, high power density and small thickness may have a large volume and low energy density is solved by connecting in parallel a plurality of unit cells nested within one another, and heat dissipation of the battery is also further improved. An assembled battery produced by the method is also provided.

Abstract: An assembled battery with a high capacity, comprising a plurality of unit cells electrically connected with one another in parallel, the unit cells each having a through-hole and being of toroidal shape, and the plurality of unit cells are arranged in a nested manner such that one unit cell is disposed within another unit cell. The problem that toroidal batteries with high capacity, high power density and small thickness may have a large volume and low energy density is solved by connecting in parallel a plurality of unit cells nested within one another, and heat dissipation of the battery is also further improved. A toroidal cell having heat dissipating fins is also provided.

Abstract: A secondary battery including an electrode assembly; a case housing the electrode assembly; a current collecting terminal electrically connected to the electrode assembly; a cap plate capping the case to seal the electrode assembly, the case, and the current collecting terminal; an insulation member interposed between the current collecting terminal and the cap plate; an electrode terminal electrically connected to the current collecting terminal and extending through the insulation member and the cap plate; and shock damping members between the electrode assembly and the cap plate, the shock damping members being coupled with the insulation member.

Abstract: Battery parts having retaining and sealing features and associated assemblies and methods are disclosed herein. In one embodiment, a battery part includes a base portion that is configured to be embedded in battery container material of a corresponding battery container. The battery part and base portion include several torque resisting features and gripping features that resist torsional or twist loads that are applied to the battery part after it has been joined to the battery container. For example, the base portion can include several internal and external torque resisting features and gripping features that are configured to resist twisting or loosening of the battery part with reference to the battery container material, as well as prevent or inhibit fluid leakage from the battery container.

Abstract: A battery safety system that includes a battery terminal configured for making an electrical connection to the system, an electrical disconnect operable to a disconnected state whereby a battery voltage is electrically isolated from the battery terminal, and a connected state, whereby the battery voltage is electrically coupled to the battery terminal. The battery safety system also includes and a terminal guard movable to an exposed position effective to allow making the electrical connection to the battery terminal, and a protected position effective to prevent electrical contact with the battery terminal other than via the electrical connection. The system is configured to prevent the electrical disconnect from being operated to the connected state if the terminal guard is not at the protected position.

Abstract: The first aspect of the present invention is a terminal unit which contains an electrode part disposed in a case, for connecting with an electrode body and a terminal part having a rod shape with a first end and a second end, the first end for fixing to the electrode part, and the second end extending outside of the case. In one embodiment of the first aspect of the invention, the electrode part includes an insert hole into which the terminal part is inserted, the terminal part comprises an insert portion having an insert portion having a larger diameter than that of the hole and formed at the first end and a tip portion having a smaller diameter than that of the hole and formed at the nearer side of the first end than the insert portion. And, the clinch portion is press fitted into the insert hole, thereby fixing the terminal part to the electrode part. According to the present invention, the varying of electric conductivity in the terminal unit is prevented.

Abstract: A battery with a threaded battery terminal for accommodating a threaded terminal bolt is provided. The threaded battery terminal includes a bushing having an axial bore extending between an open end and a closed end; and an insert having a longitudinal axis and a threaded opening extending along the longitudinal axis between an open end and a back wall. The terminal bolt is threadably received in the threaded opening and the back wall of the insert has sufficient strength to cause an overlong bolt to break upon continued threaded insertion subsequent to the bolt contacting the back wall.

Abstract: The present invention provides a battery that includes: a lid plate provided with a terminal pull-out through hole and a baffling portion whose upper surface is configured in a projecting and/or recessed manner; an auxiliary terminal configured such that a lower portion thereof is connected to a metallic foil of a power generating element by being fitted into a battery container through the terminal pull-out through hole, and sealed and fixed to the lid plate by insulating and sealing members; a connecting conductor connected and fixed to an upper portion of the auxiliary terminal; and an external terminal having a bolt portion that projects upward from a base portion, the bolt portion being inserted through the terminal through hole of the connecting conductor from below, and the base portion being engaged with the baffling portion of the lid plate, thereby restricting rotation centering an axial line of the bolt portion.

Abstract: The present invention provides a battery that includes: an auxiliary terminal configured such that a first tube is connected to a metallic foil of an electrode of a power generating element through a current collecting connector by being fitted into a battery container through a terminal pull-out through hole of a lid plate, and sealed and fixed to the lid plate by insulating and sealing members; a connecting conductor configured such that one end portion is connected and fixed to an upper portion of the auxiliary terminal, and provided with a terminal through hole on the other end portion; an external terminal having a bolt portion that projects upward from a base portion and inserted through the terminal through hole of the connecting conductor from below; and a baffling member fixed onto the lid plate and restricting rotation of the external terminal by engaging with the base portion of the external terminal.

Abstract: A battery terminal of a rechargeable battery is provided, which can reduce the number of parts necessary for connecting rechargeable batteries to each other while simplifying a manufacturing process thereof, increase a coupling force between coupling terminals and a bus bar, and enhance electrical reliability between rechargeable batteries or between a rechargeable battery and an external device. The battery terminal includes a collecting terminal having a body, and a coupling terminal for electrically and mechanically coupling to the body. The collecting terminal is for electrically coupling to an electrode assembly inside a case of the rechargeable battery. The coupling terminal has a body hole for passing the body therethrough, a thread for electrically coupling the coupling terminal to another rechargeable battery or an external device, and a rotation-preventing member.

Abstract: A lithium rechargeable battery in which an anti-rotation groove is integrally formed with a lower recess of a safety vent at a lower surface of a cap plate, and an insulating plate and a terminal plate rest in the anti-rotation groove so that the terminal plate is prevented from rotating when a cap assembly is assembled is provided. In addition, instead of the anti-rotation groove, a resting recess is formed on a lower surface of the cap plate, and the insulating plate and the terminal plate rest in the resting recess, so that the terminal plate is prevented from rotating when the cap assembly is assembled.

Abstract: A plastic battery cover for closing a battery housing includes a top surface, a bottom surface, at least one terminal extending through the battery cover, and a connecting flank extending from the at least one terminal, the connecting flank in contact with the battery cover. The connecting flank is configured such that a region between the at least one terminal and the top surface of the battery cover is adapted to prevent the formation of a gap between the terminal and the adjacent portion of the battery cover after the volume reduction of the plastic in this region during the manufacture of the battery cover by injection molding.

Abstract: A rechargeable battery including an electrode assembly including a positive electrode, a negative electrode, and a separator therebetween; a case housing the electrode assembly; a cap plate sealing an opening of the case; and an electrode terminal installed in the cap plate, wherein the electrode terminal includes a first terminal section in a terminal hole of the cap plate, the first terminal being connected to the electrode assembly in the case and including a protruding portion that protrudes outwardly from the cap plate, the protruding portion having a receiving portion therein, a second terminal section in the receiving portion, the second terminal section protruding outwardly from the receiving portion, and a fastening member between an inner peripheral surface of the receiving portion and the second terminal section, the fastening member fastening the first terminal section and the second terminal section to each other.

Abstract: A terminal of a rechargeable battery, which can provide a current path having reduced resistance between a bus bar and the terminal by separately forming a collector terminal and a coupling terminal while increasing a coupling force between the bus bar and the collector terminal, and a method of manufacturing the same are provided. In one embodiment, the terminal includes a collector terminal electrically connected to an electrode assembly disposed at the inside of a case and protruding toward the outside of the case, a lower fixing member having the collector terminal passing therethrough, a coupling terminal coupled to the lower fixing member in a sliding manner and protruding toward the outside of the lower fixing member, and an upper fixing member allowing the coupling terminal to pass therethrough and to be coupled thereto and covering the lower fixing member.

Abstract: A lithium secondary battery includes a fixing unit in a terminal plate to fix the terminal plate to an electrode terminal to prevent the terminal plate from rotating when an electrode tap is welded to a cap assembly or when the cap assembly is assembled with an upper portion of a can. The lithium secondary battery includes an electrode assembly having a first electrode plate, a second electrode plate and a separator, a can for receiving the electrode assembly and an electrolyte, and a cap assembly having a cap plate, an insulating plate, a terminal plate and an electrode terminal and being assembled with an upper opening of the can in order to seal the can. The terminal plate includes a fixing unit to fix the terminal plate to the electrode terminal such that the terminal plate is prevented from rotating.

Abstract: A rechargeable battery including: an electrode assembly; a can to house the electrode assembly; and a cap assembly to seal an opening of the can. The cap assembly includes: a cap plate; an insulation plate disposed upon a lower surface of the cap plate; a terminal plate disposed upon a lower surface of the insulation plate; and an electrode terminal extending through the cap plate, the insulation plate and the terminal plate, and which is electrically coupled to the electrode assembly. The cap plate includes a seat part defined therein, which has a thickness that is less than an overall thickness of the cap plate. The insulation plate is seated in the seat part, which has a width is the same as an overall width of the cap plate.

Abstract: A secondary battery including an electrode assembly having a positive electrode plate, a negative electrode plate and a separator being wound together, a can for receiving the electrode assembly; the can having an opening. A cap assembly includes a cap plate having an electrolyte injection hole, the cap assembly sealing the opening of the can. A lead plate is welded to an exterior-facing surface of the cap plate so as to cover the electrolyte injection hole and a protection circuit board is electrically coupled to the cap assembly. At least one positioning member is located to be aligned with at least one edge of the lead plate, the at least one positioning member defining a region for receiving the lead plate.

Abstract: A lithium rechargeable battery includes an electrode assembly arranged in a can and an insulating case positioned at an upper portion of the electrode assembly. The insulating case includes at least one protrusion protruding toward an inner wall of the can.

Abstract: A method and apparatus for cold forming a battery terminal having a battery coupling portion and an electrical coupling portion are provided. The battery coupling portion defines a first longitudinal axis and the electrical coupling portion defines a second longitudinal axis, the first axis being spaced from a distance from the second axis. The battery coupling portion and the electrical coupling portion may include one or more extensions. The electrical coupling portion may further include an insert.

Abstract: A rechargeable battery includes a housing having a housing wall, at least one cell in the housing, and a contact element electrically connected to the at least one cell. The rechargeable battery also includes a plastic sealing element extrusion-coated on the contact element. The sealing element includes a supporting surface which lies flat against the housing wall at an interface. The supporting surface is transmission laser-welded to the housing wall at the interface. One of the supporting surface and the housing wall is at least partially transparent for the laser beam and the other of the supporting surface and the housing wall is absorbent for the laser beam.

Abstract: A feedthrough terminal assembly for an active implantable medical device (AIMD) includes a plurality of leadwires extending from electronic circuitry of the AIMD, and a lossy ferrite inductor through which the leadwires extend in non-conductive relation for increasing the impedance of the leadwires at selected RF frequencies and reducing magnetic flux core saturation of the lossy ferrite inductor through phase cancellation of signals carried by the leadwires. A process is also provided for filtering electromagnetic interference (EMI) in an implanted leadwire extending from an AIMD into body fluids or tissue, wherein the leadwire is subjected to occasional high-power electromagnetic fields such as those produced by medical diagnostic equipment including magnetic resonance imaging.

Abstract: A square-shaped storage battery including a rectangular accumulator element (16), a sealed case (30) that accommodates the accumulator element, and a resin plate (20) which is formed of a hard resin having insulating properties and interposed between the sealed case and the accumulator element for limiting movement of the accumulator element.

Abstract: An electric storage battery and method of manufacture thereof characterized by a feedthrough pin which is internally directly physically and electrically connected to an inner end of a positive electrode substrate. A C-shaped mandrel extends around the pin and substrate end enabling the pin/mandrel to be used during the manufacturing process as an arbor to facilitate winding layers of a spiral jellyroll electrode assembly. The pin additionally extends from the battery case and in the final product constitutes one of the battery terminals with the battery case comprising the other terminal. Active material is removed from both sides of the outer end of the negative electrode in the jellyroll to allow room for adhesive tape to secure the jellyroll. The electrolyte is injected through the open end of the case after the endcap is welded to the negative electrode but before sealing the endcap to the case. The electrolyte is preferably injected through the C-shaped mandrel to facilitate and speed filling.

Abstract: An electric storage battery and method of manufacture thereof characterized by a feedthrough pin which is internally directly physically and electrically connected to an inner end of a positive electrode substrate. A C-shaped mandrel extends around the pin and substrate end enabling the pin/mandrel to be used during the manufacturing process as an arbor to facilitate winding layers of a spiral jellyroll electrode assembly. The pin additionally extends from the battery case and in the final product constitutes one of the battery terminals with the battery case comprising the other terminal. Active material is removed from both sides of the outer end of the negative electrode in the jellyroll to allow room for adhesive tape to secure the jellyroll. The electrolyte is injected through the open end of the case after the endcap is welded to the negative electrode but before sealing the endcap to the case. The electrolyte is preferably injected through the C-shaped mandrel to facilitate and speed filling.

Abstract: Disclosed is a rechargeable battery that can improve sealing performance of a gasket and prevent a cap assembly from rotating with respect to a case. The rechargeable battery includes an electrode assembly that includes an anode, a cathode, and a separator interposed between the anode and the cathode, a case that accommodates the electrode assembly, a cap assembly that is coupled with the case to close and seal the case and that has an electrode terminal, and a gasket that is provided between the cap assembly and the case. A protrusion is formed at a surface of the gasket. A ratio of a height of the protrusion to a half-width of the protrusion is about 0.5 to 0.8.