Abstract: According to one embodiment, provided is an electrode group including a positive electrode and a negative electrode that includes a titanium-containing oxide. The electrode group has a wound structure of a flat shape, in which a stack including the positive electrode and the negative electrode is wound such that a center of the wound structure lies along a first direction. At least a part of a portion of the negative electrode, positioned within a thickness of 0.2 t from an innermost lap along a longest straight line in a wound cross-section of the wound structure orthogonal to the first direction with respect to a thickness t from the innermost lap to an outermost lap along the longest straight line, includes a slit that lies along the first direction.

Abstract: A sealed battery includes a case, an internal terminal, an external terminal, and an insulating holder. The internal terminal of the sealed battery includes a current collector connected to the electrode body, a shaft portion exposed outside the case, and a riveted portion that is provided on an end of the shaft portion outside of the case and is pressure-deformed so as to extend along an upper surface of the external terminal. The insulating holder includes a heat resistant portion formed of an insulating material having higher heat resistance than other regions of the insulating holder and the heat resistant portion is disposed in contact with the external terminal at least below a boundary between the riveted portion and the external terminal.

Abstract: An implantable medical device contains a hermetic battery. The hermetic battery contains a hermetically sealed battery housing defining an internal chamber, an electrochemical cell disposed within the internal chamber, and an electronic module disposed within the internal chamber. The electronic module is electrically conductively connected to the electrochemical cell, and the electronic module is arranged in the electrochemical cell.

Abstract: The disclosure provides a cell structure of a solid state battery capable of uniformly holding a solid state battery cell in a battery case and a manufacturing method of a solid state battery. In a process of manufacturing a can cell of the solid state battery, a shock absorber is disposed in the battery case after the solid state battery cell is inserted into the battery case and before a can lid is welded. Then, the lid is provided to seal the case. At the time of sealing, the solid state cell and a terminal are fastened by using an engaging member, and the airtightness is improved.

Abstract: The disclosure provides a cell structure of a solid state battery capable of uniformly holding a solid state battery cell in a battery case and a manufacturing method of a solid state battery. In a process of manufacturing a can cell of the solid state battery, a shock absorber is disposed in the battery case after the solid state battery cell is inserted into the battery case and before a can lid is welded. Then, the lid is provided to seal the case. At the time of sealing, the solid state cell and a terminal are fastened by using an engaging member, and the airtightness is improved.

Abstract: The disclosure provides a cell structure of a solid state battery capable of uniformly holding a solid state battery cell in a battery case and a manufacturing method of a solid state battery. In a process of manufacturing a can cell of the solid state battery, a shock absorber is disposed in the battery case after the solid state battery cell is inserted into the battery case and before a can lid is welded. Then, the lid is provided to seal the case. At the time of sealing, the solid state cell and a terminal are fastened by using an engaging member, and the airtightness is improved.

Abstract: The invention relates to an energy store (1), in particular a high-voltage energy store, for motor vehicles, comprising a cell stack, which has a plurality of cell units (3) stacked one on the other and which has a plurality of cell holders (15, 16) of plastic, each of which is arranged between two cell units (3) lying one on the other in order to hold and align the stacked cell units (3), and comprising at least one flat heat sink (10, 17). According to the invention, the at least one heat sink (17) is arranged within the cell stack (2) on at least one of the cell units (3).

Abstract: An energy storage device includes: an electrode body including curved portions formed by winding an electrode; a container in which the electrode body is accommodated; and a cover plate structure including a cover plate closing the container. The electrode body is accommodated in the container while one end portion in a winding axis direction of the electrode body faces the cover plate structure. The energy storage device includes spacers (side spacers) that are attached to curved portions, and one end portion of the spacer abuts on a part of the cover plate structure.

Abstract: A rechargeable battery that can reduce rust occurrence is provided. The rechargeable battery includes: an electrode assembly including a positive electrode and a negative electrode; a case that houses the electrode assembly; and a cap plate that is coupled to the case, wherein an angle between a front end surface that is formed at the front end of the case and an outer surface of the case is larger than an angle between the front end surface and an inner surface of the case.

Abstract: A secondary battery includes an electrode assembly, a can, a cap plate, an insulating plate, and a terminal plate. The electrode assembly is in the can. The cap plate seals an opening of the can and includes a first hole. The insulating plate is on a lower surface of the cap plate and includes a second terminal through hole. The terminal plate is on a lower surface of the insulating plate and includes a third terminal through hole and at least one protrusion adjacent the third terminal through hole.

Abstract: A rechargeable battery includes an electrode assembly including a first electrode and a second electrode; a case receiving the electrode assembly; and at least one block layer between the case and the electrode assembly, wherein the block layer is made of a fiber material.

Abstract: Arrangements for retaining coiled battery internals in a coiled orientation within a cell casing, in which end caps and/or sleeves are provided with at least one inward-facing protuberance for engaging and securing the coiled battery internals, and means for securing and aligning pouch cell batteries within a sleeve.

Abstract: The present disclosure provides a battery cap assembly, a secondary battery and a battery module. The battery cap assembly comprises a cap plate, a first electrode terminal and a first sealing member. The cap plate includes a first terminal hole. The first electrode terminal includes a first protruding portion and a first base portion, a cross-sectional area of the first protruding portion is larger than a cross-sectional area of the first terminal hole. The first sealing member includes a first main portion, the first main portion includes a first through-hole. The first protruding portion is used for welding with a first connecting piece to form a welding portion, a projection of the welding portion is positioned in the first through-hole. The secondary battery comprises a case, the battery cap assembly and an electrode assembly. The battery module comprises the first connecting piece and the secondary batteries.

Abstract: The present disclosure relates to a method for sealing a pouch casing of a pouch-type secondary battery, which includes the steps of: a receiving step in which an electrode assembly is received in an inner space formed between an upper pouch and a lower pouch; and a sealing step in which a first pressure is applied to an outer circumferential sealing portion, where the upper pouch and the lower pouch are sealed, in the longitudinal direction, and then the pressure is relieved, wherein the sealing step is carried out by applying external force to the upper pouch in the upward direction and to the lower pouch in the downward direction, or by applying a second pressure working in perpendicular to the first pressure to the sealing portion from the inner part of the pouch casing in a direction toward the outside.

Abstract: A multilayer dielectric and sealing film is disclosed. The multi-layer dielectric sealing film comprises a layer of dielectric material and at least one layer of sealing material. The multilayer film may be positioned between the current collector tabs and the packaging material of a thin film battery to prevent shorting between the tabs and the edge of a metal foil layer in the packaging material. The multi-layer film also provides additional sealant which can flow around and seal around the terminals. By combining the sealing material and the dielectric material into one multi-layer assembly, manufacturing steps can be eliminated.

Abstract: Electrical feedthroughs are presented for redistributing thermally-induced stresses that result from welding. In some embodiments, an electrical feedthrough includes a tubular conduit having a flange at one end. The flange includes a first surface disposed opposite a second surface. The first surface includes at least one of a protrusion and a notch. The electrical feedthrough also includes an electrically-conductive terminal disposed through the tubular conduit. An electrically-insulating material is disposed between the tubular conduit and the electrically-conductive terminal and forms a seal therebetween. The protrusion and the notch are configured individually or as a combination to reduce thermally-induced stresses within the electrically-insulating material that result from welding the flange. Methods for welding such electrical feedthroughs to a wall, such as a wall of a battery housing, are also presented.

Abstract: A multilayer dielectric and sealing film is disclosed. The multi-layer dielectric sealing film comprises a layer of dielectric material and at least one layer of sealing material. The multilayer film may be positioned between the current collector tabs and the packaging material of a thin film battery to prevent shorting between the tabs and the edge of a metal foil layer in the packaging material. The multi-layer film also provides additional sealant which can flow around and seal around the terminals. By combining the sealing material and the dielectric material into one multi-layer assembly, manufacturing steps can be eliminated.

Abstract: A flexible secondary battery includes an electrode assembly including a stack having a first electrode plate, a second electrode plate, and a separator between the first and second electrode plates, and a fixing member fixing a first end portion of the stack, a first electrode tab and a second electrode tab connected to the first electrode plate and the second electrode plate, respectively, and a molding member surrounding a first end portion of the electrode assembly including the fixing member, and a connection region between the electrode assembly and the first and second electrode tabs, wherein positional variations of a second end portion of the electrode assembly are relatively large as compared to positional variations of the first end portion of the electrode assembly.

Abstract: A battery including a supporting member that functions as a fixing part or a gripping part. The supporting member includes fixing parts for fixing a battery to another battery, and a body-holding part for holding and fixing a region of an exterior body with a battery element housed therein.

Abstract: A rechargeable battery including: an electrode assembly including a negative electrode and a positive electrode; a case receiving the electrode assembly; a terminal electrically connected to the electrode assembly and protruding outside the case; a current collecting member electrically connecting the terminal and the electrode assembly to each other; and an insulating member partially enclosing the current collecting member, and the current collecting member includes a plurality of fuse parts including a first fuse part enclosed by the insulating member, and a second fuse part that is not enclosed by the insulating member and is exposed.

Abstract: A secondary battery includes an electrode assembly; a case accommodating the electrode assembly; a cap plate sealing the case and having an inversion plate; and an insulation plate having a short-circuit hole generally corresponding to the inversion plate and an air opening spaced from the short-circuit hole and fluidly connected to a top surface of the cap plate; a terminal plate coupled to a top surface of the insulation plate and electrically connected to the electrode assembly; and a terminal assembly including a sealing member coupled to a bottom surface of the insulation plate and formed to encompass the short-circuit hole and the air opening.

Abstract: Embodiments of a rechargeable battery include: an electrode assembly including first and second leads; a case for receiving the electrode assembly; a cap plate covering an opening of the case, connected to the first lead, and including a terminal hole; and an insulating terminal plate provided between the cap plate and the electrode assembly, connected to the second lead, and an electrode end installed in the terminal hole. The cap plate may include a protrusion oriented toward the electrode assembly. The terminal plate may include an extended unit extended to an external part of the protrusion with respect to the terminal hole and separated from the protrusion. The protrusion and the extended unit may be provided on a plane in parallel with the opening. A first distance between the terminal hole and the protrusion may be shorter than a second distance between the terminal hole and the extended unit.

Abstract: A secondary battery and a battery pack using the same. A secondary battery includes a pouch case containing an electrode assembly therein; an electrode terminal connected to the electrode assembly and including a side end exposed outside the pouch case; and a vent forming unit coupled to the pouch case and configured to form a vent in the pouch case when the pouch case swells.

Abstract: A secondary battery according to an embodiment includes a container having a pouring hole through which an electrolyte is poured, and housing the electrolyte, poured through the pouring hole, together with an electrode body; and a sealing lid fixed to the container and closing the pouring hole. The container has a plurality of grooves extending in parallel along the outer edge of the pouring hole, in a predetermined region that surrounds the periphery of the pouring hole, and the sealing lid is provided on the plurality of grooves in such a manner as to close the pouring hole and is fixed to the container.

Abstract: A secondary battery including a case having an opening; an electrode assembly housed in the case; at least one current collector coupled to an uncoated portion of the electrode assembly and forming an electrode terminal, wherein the case has a coupling groove recessed toward the at least one current collector; and a cap plate coupled to seal the opening of the case.

Abstract: A secondary battery that can easily adjust power by disposing a plurality of jelly-rolls for the secondary battery in a case and connecting electrodes of the jelly-rolls in either electrical series or in electrical parallel, with corresponding welds. The secondary battery is constructed with a plurality of jelly-rolls each having a first electrode tab and a second electrode tab protruding from the jelly-roll, a case having an opening accommodating insertion of the jelly-rolls, and a cap plate sealing the opening of the case and bearing electrode terminals on a bottom side of the cap plate facing the jelly-rolls. The first electrode tabs protruding from the jelly-rolls are electrically connected to the electrode terminals and the second electrode tabs protruding from the jelly-rolls are electrically connected to the cap plate.

Abstract: A secondary battery includes a case and an electrode assembly in the case that includes a first electrode plate, a separator, and a second electrode plate. The secondary battery also includes a cap plate coupled with the case and a first electrode terminal electrically connected to the first electrode plate. The first electrode terminal includes a first collecting plate connected to the electrode assembly, a first connecting part extending from the first collecting plate, and a first terminal part extending from the first connecting part. The first connecting part passes through a gap between the cap plate and the case, and the first connecting part extends to an outer surface of the cap plate. The first terminal part protrudes beyond the cap plate.

Abstract: Provided are a cap assembly for a secondary battery. The cap assembly includes a cap-up, a PTC thermistor disposed under the cap-up, a vent disposed under the PTC thermistor, and an insulating plate disposed between the vent and the cap-up and preventing contact between the vent and the PTC thermistor. Here, the vent includes a curling part bent to cover an external surface of the insulating plate. Further, the secondary battery includes an electrode assembly, a can accommodating the electrode assembly and having an opening, and the cap assembly which seals the can.

Abstract: A rechargeable battery includes an electrode assembly and a cap plate. The electrode assembly is located in a case of the battery, and the cap plate a cap plate is over an opening of the case. The battery also includes a terminal and a gasket. The terminal includes a plurality of sealing protrusions. The gasket is located between the terminal and cap plate and contacts the plurality of sealing protrusions. Together, the sealing protrusions and gasket establish a barrier which prevents electrolyte solution in the case from reaching and eroding the terminal.

Abstract: A rechargeable battery including an electrode assembly; a case in which the electrode assembly is installed; a cap assembly coupled to an opening of the case and to an externally protruded terminal, the cap assembly including a cap plate; a first gasket between the terminal and the cap plate; and a second gasket between the terminal and the cap plate, the second gasket having a blocking portion overlapped with the first gasket.

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: A system includes a power source having a set of power terminals, a cover encapsulating the power source including the set of power terminals and sealing the power source including the set of power terminals within the cover, and a set of conductive contacts passing through the cover, contacting the set of power terminals, and providing conductive access to the set of power terminals of the power source from outside the cover without allowing exposure of the power source to an environment outside the cover.

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 rechargeable battery includes an electrode assembly having a separator between electrode plates, a case accommodating the electrode assembly, a cap plate coupled to an opening of the case, an electrode terminal through a terminal hole in the cap plate, a gasket between the electrode terminal and an interior circumference of the terminal hole, an insulator between the cap plate and the electrode terminal, a portion of the gasket being between the insulator and the electrode terminal, and a sealing member between the gasket and the insulator, the sealing member extending continuously along a first surface of the gasket and along a first surface of the insulator, the first surface of the gasket and the first surface of the insulator being non-parallel to each other.

Abstract: A secondary battery including: a bare cell including an electrode assembly, a can to receive the electrode assembly, and a cap assembly attached to an opening of the top of the can; a protection circuit board electrically connected to the bare cell, and a molded resin disposed between the cap assembly and the protection circuit board. The cap assembly includes a cap plate attached to the top of the can and having a through-hole, an electrode terminal extending through the through-hole; and a gasket disposed around the electrode terminal. A portion of the molded resin is disposed in a gap between the electrode terminal and an upper surface of the cap plate.

Abstract: An end cap assembly for an electrochemical cell having an end cap, a current collector, and a seal. The end cap has a top surface and a bottom surface. The current collector has a columnar body with a head at one end thereof. The seal has a central boss with an opening through which the current collector is inserted. The seal also has a peripheral edge and a connecting part connecting the central boss with the peripheral edge. The connecting part of the seal has a top surface and a bottom surface. The central boss has a top surface and a bottom surface. The top surface of the central boss faces the bottom surface of the end cap and the bottom surface of the central boss does not extend below the bottom surface of the connecting part. The current collector is positioned within the opening of the central boss so that the head of the current collector does not touch the top surface of the central boss thus forming a gap from about 0.01 mm to about 0.

Abstract: A method of making a hermetically-sealed feed-through device includes inserting an elongate conductor or conductors within a hollow portion or portions of a plastic insulator body and inserting the plastic insulator body within a hollow outer jacket to form an assembly. At least one of the conductor or conductors, insulator body, or jacket of the assembly has a plurality of circumferential grooves. Thereafter, the assembly is crimped and/or is swage-crimped at ambient temperature to cause the materials of the conductor or conductors, insulator body, and outer jacket to be displaced or extrude into the grooves thereby creating mechanical interlocks between the conductor or conductors, insulator body, and outer jacket. Additional methods and feed-through devices made by the methods are also disclosed.

Abstract: The sealed battery has a battery container (4, 5) and a power generating element sealed inside the battery container. The battery container is provided with a fill opening (12), an annular ridge (16), which extends around the entire circumference of the outer face surrounding the fill opening, and an annular indentation (15) on the inside of the inner wall surface of the annular ridge, and has a sealing cap (8), which fits into the annular indentation and covers the fill opening. The sealing cap is joined by being welded to the inner wall surface of the annular ridge around the entire circumference at the edge thereof. Since heat is not well transferred from the inside to the outside of the outer wall surface of the annular ridge, the effective thermal capacity during welding is mostly determined by the structure of the area inside the outer wall surface of the annular ridge. Consequently, the effective thermal capacity is nearly uniform independent of direction.

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: A lithium secondary battery includes: a bare cell having an electrode assembly and a case for containing the electrode assembly; a protection circuit module connected to the bare cell; and a cover enclosing the protection circuit module and the bare cell and having an external terminal electrically connected to electrodes of the electrode assembly, wherein a part of the cover is a molded portion made of resin using a mold.

Abstract: A secondary battery includes an electrode assembly having a positive electrode, a negative electrode and a separator interposed between the positive and negative electrodes and a container for receiving the electrode assembly inside thereof. The secondary battery also includes a cap assembly fixed to the container to seal the container and a gasket disposed between the container and the cap assembly. The gasket has at least one concavo-convex portion on a surface contacting the container and/or the cap assembly. This improved gasket structure enhances the air tightness of the secondary battery.

Abstract: Provided is a secondary battery including an electrode assembly, a case accommodating the electrode assembly, a cap assembly, and an electrode terminal electrically connected to the electrode assembly. The cap assembly includes a cap plate disposed over an upper opening of the case. The electrode terminal protrudes outwardly from a terminal hole of the cap plate. The electrode terminal includes a collecting terminal extending through the terminal hole of the cap plate, a terminal plate coupled with the collecting terminal, and a coupling terminal coupled with the terminal plate. The cap plate includes a short-circuit hole therein. The short-circuit hole is at a position corresponding to a position of the coupling terminal. A short-circuit member covers the short-circuit hole.

Abstract: [Problem] There is provided a sealed cell with no possibility of liquid leakage without sacrificing volume energy density. [Measures to solve the problem] The sealing body is characterized as follows: the sealing body for a sealed cell comprises a substantially rectangular-shaped sealing plate having a through hole and/or a thinner portion that is thinner than other portions, and an electrode external terminal attached to the through hole and/or the thinner portion; and the periphery of the sealing body in the vicinity of the terminal plate is thicker than other portions. The thicker portion is 0.1 to 0.4 mm thicker than the other portions, and the width of the thicker portion is preferably 0.1 to 0.5 mm.

Abstract: A battery terminal includes an outer terminal segment, the outer terminal segment being made of a first conductive material; an inner terminal segment being made of a second conductive material different from the first conductive material and having an upper end connected to a lower end of the outer terminal segment forming a connection portion between the upper end of the inner terminal segment and the lower end of the outer terminal segment, and a protection member around the connection portion. With the battery terminal according to an embodiment of the present invention into batteries, adjacent batteries can be connected together more reliably.

Abstract: To provide a film-packaged battery 1 in which battery element 2 formed by collectively joining a plurality of positive and negative extending portions 2a and 2b to positive and negative electrode leads 3a and 3b for each polarity, is surrounded by laminate films 5 and 6 which are formed by laminating at least heat fusion layer 10 and metal layer 11. Protection member 4a having a melting point lower than that of heat fusion layer 10 is arranged at least between each of joining portions 20a and 20b of positive and negative electrode extending portions 2a and 2b, and heat fusion layer 10 of laminate film 5 which layer face the each of joining portions 20a and 20b.

Abstract: A battery assembly includes a housing having an inside surface and an outside surface. The outside surface has a bottom portion, a side portion, and a junction portion between the bottom portion and the side portion. The inside surface defines an internal cavity, and a drain aperture extends through the wall from the outside surface to the cavity at the junction portion. At least one battery cell is disposed within the cavity. A contact is coupled to the housing and is in electrical communication with the battery cell.

Abstract: A rechargeable battery includes an electrode assembly having electrodes on opposite sides of a separator, a case retaining the electrode assembly, a cap plate coupled with an opening of the case, electrode terminals extending through terminal holes of the cap plate, lead tabs connecting the electrode terminals to the electrode assembly, the electrode terminals being electrically connected to the lead tabs at connection parts, and insulators, the connection parts being embedded in the insulators.

Abstract: A secondary battery includes a can having an interior space, an electrode assembly provided in the interior space of the can, and a cap assembly seated on an opening formed in the can to seal the can and electrically connected to the electrode assembly. The cap assembly includes a cap plate connected to the opening to seal the can; a tab plate mounted to one side of the cap plate and connected to the electrode assembly; an insulating plate interposed between the cap plate and the tab plate; an electrode pin passing through the cap plate, the tab plate, and the insulating plate to interconnect these elements; and an insulating gasket interposed between the cap plate and the electrode pin. Also, the electrode pin includes a head portion mounted to one side of the cap plate and formed in multiple stages in an area contacting the insulating gasket; and a column extending from the head portion and passing through the insulating gasket, the cap plate, the insulating plate, and the cap plate.