Abstract: The invention provides a closed type battery comprising a battery element covered with a covering film and a heat fusion seal portion formed by heat fusion on a periphery of the covering film, wherein the cleaving strength upon an internal pressure rise of a seal portion positioned between a positive electrode terminal and a negative electrode terminal is larger than that of any other seal portion, and a safety valve adapted to release pressure upon a battery's internal pressure rise is located at a portion other than said inter-terminal seal portion. The invention also provides an assembled battery wherein a plurality of closed type batteries are stacked one upon another while a safety valve adapted to release pressure upon an increase in the internal pressure of the battery is located at a position in no contact with the covering film surface of an adjoining battery.

Abstract: A secondary battery typified by a lithium-ion secondary battery includes a battery outer container in which a gas release valve and positive and negative electrode external terminals are provided, an electrode group in which positive and negative plates are stacked with a separator interposed therebetween and current collection portions are provided at both ends, and positive and negative electrode current collectors forming a current path from the current collection portions of the electrode group to the positive and negative electrode external terminals, and the cross-sectional area of a gas exhaust flow channel through which gas generated inside the electrode group is discharged from the gas release valve is set so as to increase in a downstream direction.

Abstract: A rechargeable battery according to an exemplary embodiment includes an electrode assembly having a positive electrode and a negative electrode, a case in which the electrode assembly is installed, a cap plate coupled with the case, a short-circuit member provided in a short-circuit hole formed in the cap plate and deformed to electrically connect the positive electrode and the negative electrode, and a valve member provided under the short-circuit hole and controlling connection between an internal space of the case and the short-circuit hole.

Abstract: A sealing plate for a prismatic secondary battery includes a pair of mouths for attaching a negative and positive electrode terminals, one mouth being formed near one end in a longitudinal direction of the sealing plate, and the other mouth being formed near the other end, coining areas used for positioning of an insulating member and formed around the pair of mouths on a front face of the sealing plate, a gas release valve and an electrolyte pour hole formed between the pair of mouths, and grooves formed between the respective coining areas and the long side edge of the sealing plate. The groove has a smaller depth near the gas release valve than the depth near the coining area. Even when the sealing plate is produced through forging, the front face has good flatness and the coining areas are unlikely to have a sink mark or a shear drop.

Abstract: A prismatic secondary battery includes a prismatic hollow outer body having a mouth and a bottom; a flat electrode assembly, a positive electrode collector, a negative electrode collector, and an electrolyte, all of which are stored in the prismatic outer body; a sealing plate sealing up the mouth of the prismatic outer body; and a positive electrode terminal attached to the sealing plate in an electrically insulated manner. The sealing plate includes a gas release valve and an electrolyte pour hole and further includes, on the front face, a concaved flat face having an identification code. With the prismatic secondary battery of the invention, a jig for assembly or the like is unlikely to come into contact with the identification code during an assembly process of the prismatic secondary battery, hence the identification code is unlikely to be abraded, and the traceability is unlikely to be lost.

Abstract: A prismatic secondary battery includes a prismatic hollow outer body having a mouth and a bottom and storing an electrode assembly, a positive electrode collector, a negative electrode collector, and an electrolyte, a sealing plate sealing up the mouth of the prismatic hollow outer body, and a positive electrode terminal and a negative electrode terminal attached to the sealing plate; the sealing plate includes a gas release valve at the center between the positive electrode terminal and the negative electrode terminal and includes an electrolyte pour hole on one side of the gas release valve and, on the other side on the front face, a concaved flat face with a height lower than that of the peripheral portion; and the concaved flat face is formed with an identification code.

Abstract: A stacked battery has at least two cell segments arranged in a stack. Each cell segment may have a first electrode unit having a first active material electrode, a second electrode unit having a second active material electrode, and an electrolyte layer between the active material electrodes. One or more gaskets may be included in each cell segment to seal the electrolyte within the cell segment. The electrode units may be “dish shaped” and may contain a pressure equalization valve to reduce electrode unit deflection and improve pressure equalization between cell segments. The pressure equalization valve may allow a gas to diffuse through adjacent cell segments and may substantially prevent electrolyte from diffusing through.

Abstract: In a method for manufacturing a battery safety valve according to the present invention, a stainless steel metal sheet is used, and an thin annular portion constituting an edge portion of a safety valve is formed in a lid by simultaneously pressing annular projecting portions provided respectively on a punch and a die so as to oppose each other, against respective surfaces of the lid.

Abstract: A cylindrical cell is disclosed. A poles pass through a cover plates, and an insulating material is used to separate the poles from the cover plates; the poles at the anode and the cathode are respectively fixedly connected to a conductor junction plates at the anode and the cathode; a sealable injection hole is arranged on the cover plates; a hollow cylinder is fixedly connected to the cover plates; the hollow cylinder is sleeved in through holes of the conductor junction plates; a roll cores are distributed around the hollow cylinder; tabs are arranged at the anode and the cathode of roll core, and the tabs at the anode and the cathode of the roll core are fixedly connected to the upper and lower conductor junction plates; the upper and lower conductor junction plates are respectively connected to the cover plates at the anode and the cathode of the cell.

Abstract: The invention provides a closed type battery comprising a battery element covered with a covering film and a heat fusion seal portion formed by heat fusion on a periphery of the covering film, wherein the cleaving strength upon an internal pressure rise of a seal portion positioned between a positive electrode terminal and a negative electrode terminal is larger than that of any other seal portion, and a safety valve adapted to release pressure upon a battery's internal pressure rise is located at a portion other than said inter-terminal seal portion. The invention also provides an assembled battery wherein a plurality of closed type batteries are stacked one upon another while a safety valve adapted to release pressure upon an increase in the internal pressure of the battery is located at a position in no contact with the covering film surface of an adjoining battery.

Abstract: The disclosed embodiments relate to a battery cell which includes a weakness for relieving pressure. This battery cell includes a jelly roll comprising layers which are wound together, including a cathode with an active coating, a separator and an anode with an active coating. The jelly roll also includes a first conductive tab coupled to the cathode and a second conductive tab coupled to the anode. The jelly roll is enclosed in a flexible pouch, wherein the first and second conductive tabs extend through seals in the pouch to provide terminals for the battery cell. This pouch includes a weakness which yields when internal pressure in the pouch exceeds a threshold to create a hole which releases the internal pressure.

Abstract: A valve for a pressure vessel system includes a housing having a cavity defined by an inner surface of the housing. The housing further includes a rod aperture and a pair of fluid flow ports. An actuator is disposed adjacent the housing. The valve also includes a piston having a rod coupled to a piston head. The piston head is disposed in the cavity of the housing, and the rod disposed through the rod aperture. The rod is also coupled to the actuator. A ring seal is disposed between the piston head and an inner surface of the housing. The ring seal biases the piston head toward one of the fluid flow ports and seals the one of the fluid flow ports to close the valve when the actuator is deactivated. The ring seal is elastically deformed and the fluid flow ports are opened when the actuator is activated.

Abstract: In a battery block, a plurality of battery cells are arrayed, connected, and fixed, and the plurality of battery cells are separated into a plurality of sections, each of which includes a predetermined number of battery cells separated as one section by a section plate. The battery block is sandwiched between two end plates and the two end plates and the section plates are bolted down and fixed via a plurality of rods extending along a direction in which the battery cells are arrayed. The battery cells each include a gas vent valve, and the battery block includes a vent duct that establishes communication between the gas vent valves of the battery cells.

Abstract: A secondary battery includes a can having an opening at a side thereof, an electrode assembly inside the can, the electrode assembly including a first electrode, a second electrode, and a separator disposed between the first electrode and the second electrode, a one-unit cap covering the opening of the can, the one-unit cap including a current interrupt unit, a cap-up on the current interrupt unit, a positive temperature coefficient (PTC) device between the current interrupt unit and the cap-up, and an adhesive unit attaching the current interrupt unit to the cap-up to integrate the current interrupt unit, the PTC device, and the cap-up with each other, and an insulating gasket sealing a space between the can and the one-unit cap to seal the can.

Abstract: In non-aqueous electrolyte secondary batteries, an organic solvent is used for an electrolyte. Thus, the non-aqueous electrolyte may be decomposed to produce a gas in the battery to abruptly raise the internal pressure of the battery in an abnormal state such as an internal short circuit or overcharge. In order to prevent a rupture of the battery case due to a rise in internal pressure, the non-aqueous electrolyte secondary battery includes a cleavage valve that opens when the internal pressure rises. The cleavage valve includes a valve element and a ring member, and is installed in a through hole provided in a lid plate. In order to prevent corrosion of the cleavage valve, a corrosion preventing foil is provided to cover the through hole provided in the lid plate of the battery case from inside the battery case to cover the cleavage valve.

Abstract: A battery module includes a plurality of rechargeable batteries each having a gas exhaust member openable at a threshold pressure; a housing holding the rechargeable batteries and having a gas exhaust hole; and a valve member covering the gas exhaust hole, wherein a pressure for opening the valve member is lower than the threshold pressure.

Abstract: A battery includes: a first member having an opening a housing space which houses a generation element; and a second member which closes the opening of the first member. The first member and the second member have welded portions which are welded to each other. A groove which can receive a part of molten metal MM generated upon welding is formed in a channel between the first and the second member, i.e., from the welded portion to the housing space. This prevents flow of the molten metal generation upon welding to the housing space. A vehicle using the battery and a method for manufacturing such a battery are also provided.

Abstract: A power source apparatus including batteries having positive and negative electrode regions, parallel blocks with batteries stacked together and electrically connected in parallel, multiple parallel-series connected blocks with the parallel blocks electrically connected in series, and bus-bars having a plurality of terminal insertion holes. Batteries in a parallel block are stacked together lining-up positive electrode regions on one side and negative electrode regions on the other side. Parallel blocks in a multiple parallel-series connected block are stacked so as to reverse the orientation of each block added to the stack. The bus-bars are integrated pieces that can electrically connect the batteries in a parallel block in parallel as well as electrically connect the parallel blocks in series.

Abstract: Various embodiments are described herein for a pressure valve for a battery pack comprising a housing that has a cavity, a first plate inside the cavity and an expansible chamber inside the cavity between the first plate and the bottom of the housing. The first plate and the expansible chamber have openings that are in fluid communication with a gas inside the battery pack. The expansible chamber is deformable in order to contract or expand in response to changes in pressure in the gas within the battery pack and the first plate is movable relative to the bottom of the housing.

Abstract: The invention provides a closed type battery comprising a battery element covered with a covering film and a heat fusion seal portion formed by heat fusion on a periphery of the covering film, wherein the cleaving strength upon an internal pressure rise of a seal portion positioned between a positive electrode terminal and a negative electrode terminal is larger than that of any other seal portion, and a safety valve adapted to release pressure upon a battery's internal pressure rise is located at a portion other than said inter-terminal seal portion. The invention also provides an assembled battery wherein a plurality of closed type batteries are stacked one upon another while a safety valve adapted to release pressure upon an increase in the internal pressure of the battery is located at a position in no contact with the covering film surface of an adjoining battery.

Abstract: A lead-acid battery comprises a flame arrestor plug (1) for controlled venting of gases from the battery through the vent hole (3), wherein the flame arrestor plug has a valve element (5) for controlling the venting of gas from the vent hole and a plug portion (4) which is adjacent to or in contact with the battery casing (2) around the vent hole and which, together with the battery casing, defines a flow path through which gases released through the valve element can escape from the battery, at least a portion of the flow path being of sufficiently narrow cross-section to prevent propagation of a flame along the flow path.

Abstract: A rechargeable battery includes a can having an open portion in an upper region and accommodates a power generating unit. A flexible plate is installed in the opening portion, the flexible plate being connected to an electrode of the power generating unit and flexing when the internal pressure of the rechargeable battery rises above an allowable range. A terminal cap is arranged on the flexible plate, electrically connected to the flexible plate, and has an insulating portion on a bottom surface. An insulating substrate is arranged between the flexible plate and the terminal cap and has a rupture portion that is broken when the flexible plate flexes beyond an allowable range. Upon breaking the broken ends of the insulating substrate directly contact the insulating portion of the terminal cap so that the insulating substrate is electrically disconnected from the terminal cap.

Abstract: A power storage device includes a plurality of power storage elements (10) lined up along a predetermined arrangement direction; a dividing member (40) that is made of insulating material and arranged between two adjacent power storage elements; a pair of end plates (31) that sandwich the plurality of power storage elements, and apply restraining force thereto, in the arrangement direction; and a metal connecting member (32) that extends in the arrangement direction and is fixed to the pair of end plates. The dividing member includes a retaining portion (42) that is positioned between the power storage elements and the connecting member, and that retains the connecting member.

Abstract: A thermal management system is provided that minimizes the effects of thermal runaway within a battery pack. The system is comprised of a sealed battery pack enclosure configured to hold a plurality of batteries, where the battery pack enclosure is divided into a plurality of sealed battery pack compartments. The system also includes a plurality of battery venting assemblies, where at least one battery venting assembly is integrated into each of the sealed battery pack compartments, and where each of the battery venting assemblies includes an exhaust port integrated into an outer wall of the battery pack compartment and a valve, the valve being configured to seal the exhaust port under normal operating conditions and to unseal the exhaust port when at least one of the batteries within the battery pack compartment enters into thermal runaway.

Abstract: A thermal management system is provided that minimizes the effects of thermal runaway within a battery pack, the system using an integrated battery venting assembly comprised of an integrated exhaust port, a valve retention plate that covers the exhaust port and includes a plurality of retention plate ports, and a plurality of valves that are configured to seal the retention plate ports under normal conditions and unseal the retention plate ports during thermal runaway. As hot gas passes through the retention plate ports, the plate is configured to melt and be ejected, thereby allowing subsequent hot gas to pass through the larger exhaust port. A perforated cover plate may be used to protect the external surfaces of the retention plate and valves. An internally mounted exhaust guide may be used to direct the flow of hot gas expelled during the thermal runaway event.

Abstract: Terminal insulating members 7A, 7B have inner side surfaces of a first support base 71A facing each other, and an engaging recesses 75 extending along a surface of a cover 6 are formed in inner surfaces of both the terminal insulating members. An outer surface along a short side of the cover in a second support base 72A is formed with an engaging recess 76 extending along a cover surface. The engaging recesses 75 and 76 of both the terminal insulating members are arranged to face each other. Further, both the terminal insulating members are also provided with engaging recesses 77 having a substantially circular cross-sectional shape on both side surfaces along a long side of the cover. The configuration can be used for positioning or fixing an accessory loaded into a secondary battery SB. As a result, a part only for loading an external part is unnecessary.

Abstract: A cap assembly includes a cap-up and a safety vent wherein an end of the safety vent is bent to cover an end of the cap-up, a first thickness of a first region of the cap-up in contact with the end of the safety vent is smaller than a second thickness of a second region of the cap-up not in contact with the end of the safety vent.

Abstract: A battery includes a valve unit which is disposed on a first surface of a battery container to be broken when a gas pressure in the battery container increases to a predetermined value or greater, so as to guide a gas in the battery container in a direction inclined at a predetermined angle with respect to a normal direction of the first surface to discharge the gas to the outside.

Abstract: A rechargeable battery includes: an electrode group including a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode; a case housing the electrode group; a cap-up electrically connected with the electrode group and combined with the case; a vent plate installed below the cap-up and having a notch; and a heterogeneous metallic member installed between the cap-up and the vent plate and made of a clad metal, whereby the stability and outputting of the rechargeable battery can be improved.

Abstract: A rechargeable battery including an electrode assembly, the electrode assembly including a positive electrode and a negative electrode; a case accommodating the electrode assembly; a cap plate coupled with the case; and a vent member welded to the cap plate, the vent member including a notch thereon, wherein a welded unit, by which the vent member and the cap plate are welded together, is separately formed toward a center of the cap plate in a thickness direction from an outer side of the cap plate so as to be spaced apart from the outer side of the cap plate.

Abstract: An electrochemical energy converter device (1) with at least one in particular rechargeable electrode assembly (2), which is provided to provide electrical energy at least intermittently to a consumer in particular, which has at least two electrodes (3, 3a) of different polarity, with at least a current conduction device (4, 4a), which is provided to be electrically, preferably materially connected to one of the electrodes (3, 3a) of the electrode assembly (2), with a cell housing (5) with a first housing part (6), wherein the first housing part (6) is provided to encompass the electrode assembly (2) at least in certain areas.

Abstract: An electric storage device includes an electrode assembly, a case, and a sealing member. The case includes a gas exhaust portion that opens to exhaust internal gas when an internal pressure increases. The sealing member is affixed to the case. The sealing member includes a protective portion and at least one of a perforation and a thin section having a thickness smaller than another section of the sealing member. The protective portion covers the gas exhaust portion of the case.

Abstract: In an alkaline battery in which an opening of a battery case 1 containing a power-generating element is sealed via a sealing plate 7 with a gasket 5 interposed between the battery case 1 and the sealing plate 7, the sealing plate 7 has a vent 7a, the gasket 5 has an explosion-proof valve 5a, an electrolyte filter 9 made of a porous membrane is disposed in a space defined by the sealing plate 7 and the gasket 5, a volume of a space defined by the sealing plate 7 and the electrolyte filter 9 is greater than or equal to 0.25 cm3, and a tensile stress of the electrolyte filter 9 at 100% tensile elongation in at least one direction is in a range of 60-4000 N/m.

Abstract: Disclosed is a highly reliable prismatic secondary battery with a current interruption mechanism that is unlikely to be damaged even if the battery is subjected to shock due to vibration, falling, etc. A second insulating member that has a through-hole is disposed between an inversion plate and the first region of a positive electrode collector, and through the through-hole the first region of the positive electrode collector is electrically connected to the inversion plate. First to third projections to formed around the through-hole formed in the second insulating member fit respectively into first to third openings formed in the first region of the positive electrode collector, and the diameters of their apexes are widened, thus forming first to third fixing portions. Thereby, the second insulating member is robustly joined to the first region of the positive electrode collector.

Abstract: Disclosed is a prismatic secondary battery in which a second insulating member that has a through-hole is disposed between an inversion plate and a first region of a positive electrode collector, and through the through-hole the first region of the positive electrode collector is electrically connected to the inversion plate by a connecting portion. The positive electrode collector has an annular notch portion that encircles the connecting portions connecting with the inversion plate. The product of the thickness t of the thinnest part of the notch portion and the length L of the notch portion is 0.28 to 0.57 mm2. There is thus provided a high-reliability prismatic secondary battery including, between the collector and the external terminals, a current interruption mechanism that is unlikely to be damaged even if high current flows in the battery.

Abstract: A current interruption mechanism for prismatic secondary battery includes a tubular conductive member electrically connected to a positive electrode external terminal, an inversion plate, and a positive electrode collector connected to the inversion plate. The positive electrode collector has a first region that is parallel to a sealing body and a second region that is connected to a positive electrode plate. The boundaries between the first and second regions are disposed further outward than the inner surface of the tubular conductive member, and at least one of the edge portions, other than the boundaries between the first region and second region, is located further outward than the inner surface of the tubular portion of the conductive member. The current interruption mechanism is unlikely to be damaged even if the battery is subjected to shock due to vibration, falling, etc.

Abstract: Embodiments related to recycling alkaline batteries are disclosed. In one disclosed embodiment, a method for recycling a battery having a basic electrolyte comprises rupturing the battery under anaerobic conditions and flooding the interior of the battery with carbon dioxide in an anaerobic chamber.

Abstract: A case (20) of each battery cell (1) houses a current interrupt device (30) that cuts-off current when internal pressure exceeds a set pressure. The case has a rectangular outline with a pair of opposing planar surfaces (20A). An electrode unit (10), which is a stack of positive and negative electrode plates (10A) with intervening separators (10C), and the current interrupt device are disposed between the pair of opposing planar surfaces. A plurality of battery cells is stacked with opposing planar surfaces opposite each other to form a battery block (2). The power source apparatus has a pair of endplates (4) disposed at the ends of the battery block, the pair of endplates is connected by connecting components (5), and the pair of endplates holds the battery cells in the stacked configuration applying pressure in a direction perpendicular to the opposing planar surfaces.

Abstract: A battery pack includes a stack including a plurality of battery cells aligned, holding plates respectively provided on side faces of the stack for holding the stack, a coupling member disposed along a direction in which the battery cells are aligned and fixed to the holding plates to bind the plurality of battery cells, and an insulating member provided between the coupling member and the plurality of battery cells. The insulating member includes projecting portions disposed adjacent to and along at least one of side faces of the coupling member and projecting toward the coupling member.

Abstract: A cap assembly for a battery and a battery incorporating the cap assembly. The cap assembly includes a plate that connects the electrodes of the bare cell of the battery. The cap assembly includes a vent member that includes a protrusion that is physically connected to the plate. Excess pressure within the bare cell results in the protrusion disconnecting from the plate thereby interrupting current. The vent further includes two circular notches, an inner notch and an outer notch. The vent further includes a cross notch that extends radially outward so as to intersect and extend beyond both the first and second notches. The notches are configured to release when the pressure within the bare cell exceeds a burst pressure.

Abstract: A lithium accumulator containing positive and negative electrodes with a minimum thickness of 0.5 mm, separated by separators, where each electrode is deposited into a hole in a frame, as a part of a set of frames arranged in a stack between marginal covers, with electrical insulation between the frames of opposite electrodes and additional current collectors between identical electrodes, wherein each frame comprises at least one channel for passage of a heat exchange media and the channels of the individual frames are interconnected. Liquid accumulator electrolyte may be used as a heat exchange media.

Abstract: The present invention discloses a high temperature-proof device for a lithium battery, which is installed in a casing of a lithium battery. The casing has a sealing board on one face thereof. The sealing board has at least one through-hole where a pressure relief module is installed. The pressure relief module has a top cover protruding from the sealing board. The top cover has at least one exhaust hole and an engagement member arranged inside the top cover. The engagement member has a first exhaust channel. A low-melting point compound is arranged inside the first exhaust channel. The present invention releases the high-temperature gas generated by inappropriate chemical or electric reaction inside a lithium battery. Thus, the present invention can prevent a lithium battery from burning or explosion caused by the high-temperature gas. Therefore, the present invention can effectively promote safety of lithium batteries.

Abstract: A method for preparing carbon aerogels and carbon aerogels obtained therefrom are disclosed. The method for preparing carbon aerogels comprises: mixing organic starting materials including phloroglucinol and furfural with a solvent capable of dissolving the organic materials in a predetermined ratio to form a sol solution; adjusting pH of the sol solution adequately by using an acidic or basic catalyst, gelling the sol solution at room temperature under atmospheric pressure, and aging the resultant gels; substituting the solvent in thus obtained gels with liquid carbon dioxide, followed by drying in a supercritical state, to form organic aerogels; and pyrolyzing the organic aerogels in an electric furnace under inert atmosphere to obtain carbon aerogels. Particularly, the gels are formed at room temperature in a short period of time by adequately adjusting pH of the sol solution. Therefore, the method provides improved time efficiency and energy efficiency as compared to existing methods for preparing gels.

Abstract: A rechargeable pencil battery has a hollow cylindrical positive electrode including nickel hydroxide; a gelled negative electrode comprising at least one of zinc and a zinc compound; a separator interposed between the hollow cylindrical positive electrode and the gelled negative electrode; and a negative electrode current collector inserted into the gelled negative electrode. Rechargeable batteries of the invention are capable of between about 50 and 1000 cycles from a fully charge state to a fully discharged state at a discharge rates of about 0.5 C or greater, in some embodiments about 1 C or greater. Batteries of the invention have a ratio of length to diameter of between about 1.5:1 and about 20:1, and therefore can be longer than typical commercially available batteries but also include batteries of commercial sizes e.g. AAAA, AAA, AA, C, D, sub-C and the like.

Abstract: A gasket is for use in a starved electrolyte bipolar battery. The gasket may be made from a hydrophobic material in the shape of a frame to prevent the creation of an electrolyte path between adjacent cells when mounted in a battery. The frame may be designed to at least partially encompass a biplate when mounted in a bipolar battery, and include a device or way to permit gas passage through the gasket. The gasket may be made from a material with deformable properties to provide a sealing to a biplate and/or endplate when mounted in a bipolar battery, whereby an outer pressure tight seal of the battery may be obtained. A starved bipolar battery and a method for manufacturing a starved bipolar battery are also disclosed.

Abstract: A lithium-ion battery package can include flexible foil, a first conductor patch exposed on the flexible foil, a second conductor patch exposed on the flexible foil, a folded orientation of the flexible foil that includes a contact between the first conductor patch and the second conductor patch, and an expanded orientation of the flexible foil that includes a space between the first conductor patch and the second conductor patch. Various other apparatuses, systems, methods, etc., are also disclosed.

Abstract: A secondary battery includes a battery unit that has an accommodation space for an electrode assembly, a vent housing that defines a housing space connected with the accommodation space through a first vent hole, the vent housing including a second vent hole through which the housing space is connected with an outside of the secondary battery, a revolving member that is rotatably mounted between a closing position for closing the first and second vent holes and an opening position for opening the first and second vent holes, and first and second sealing caps that are formed at opposite sides of the revolving member with respect to a rotation axis of the revolving member. The first and second sealing caps respectively close the first and second vent holes, when the revolving member is mounted at the closing position.

Abstract: The invention relates to a battery assembly with high thermal conductivity. The battery assembly comprises a metal case having a hollow accommodation cavity formed therein, a plurality of battery cores installed parallel to one another within the metal case, and a common electrode for connection to the other electrode in each of the battery cores. Each of the battery cores has two electrodes, with one of the electrodes that corresponds to those of the rest of the battery cores being connected in a thermally conductive manner to the metal case. The invention takes advantage of high thermal conductivity of metallic material and dissipates heat by connecting the metal case to the battery electrodes. The invention further comprises fixation troughs formed on the metal case, thereby reducing the size of the assembly.

Abstract: The invention relates to a battery assembly with high thermal conductivity. The battery assembly comprises a metal case having a hollow accommodation cavity formed therein, a plurality of battery cells installed parallel to one another within the metal case, and a common electrode for connection to the other electrode in each of the battery cells. Each of the battery cells has two electrodes, with one of the electrodes that corresponds to those of the rest of the battery cells being connected in a thermally conductive manner to the metal case. The invention takes advantage of high thermal conductivity of metallic material and dissipates heat by connecting the metal case to the battery electrodes. The invention further comprises fixation troughs formed on the metal case, thereby reducing the size of the assembly.

Abstract: A secondary battery having a cap assembly, including an electrode assembly; a case in which the electrode assembly is located; a cap assembly having a cap plate coupled to and hermetically sealing the case. A terminal member has a head with a stepped protrusion penetrating the cap plate and insulated from the cap plate by an insulating member. The stepped protrusion presses the insulating member in multiple steps. The terminal member is connected to a positive or negative electrode terminal of the electrode assembly.