Abstract: A thermal management system is provided that minimizes the effects of thermal runaway within a battery pack. The system includes a sealed battery pack enclosure configured to hold a plurality of batteries and at least one exhaust nozzle assembly. The exhaust nozzle assembly includes an exhaust nozzle that passes and directs the flow of hot gas from within the battery pack to the ambient environment during a thermal runaway event, a nozzle seal mounted within the exhaust nozzle that seals the exhaust nozzle during normal operation of the battery pack, and a nozzle seal mounting nut that holds the nozzle seal within the exhaust nozzle during normal operation and then melts during a thermal runaway event, thereby allowing the nozzle seal to be ejected through the exhaust nozzle during the event.

Abstract: A rechargeable battery including an electrode assembly having a first electrode and a second electrode; a case housing the electrode assembly; a cap plate coupled to the case; a terminal electrically connected to the electrode assembly and protruding from the cap plate; a connecting member on the cap plate, the connecting member including a body, a first short-circuit tab within the body and electrically connected to the first electrode, and a second short-circuit tab within the body and electrically connected to the second electrode; and a short-circuit member spaced from the first short-circuit tab and the second short-circuit tab.

Abstract: A thermal management system is provided that minimizes the effects of thermal runaway within a battery pack. The system includes a sealed battery pack enclosure configured to hold a plurality of batteries and at least one exhaust nozzle assembly. The exhaust nozzle assembly includes an exhaust nozzle that passes and directs the flow of hot gas from within the battery pack to the ambient environment during a thermal runaway event, a nozzle seal mounted within the exhaust nozzle that seals the exhaust nozzle during normal operation of the battery pack, and a nozzle seal mounting nut that holds the nozzle seal within the exhaust nozzle during normal operation and then melts during a thermal runaway event, thereby allowing the nozzle seal to be ejected through the exhaust nozzle during the event.

Abstract: A rubber valve body for sealed battery includes a rubber composition containing a resin in an amount of 20% by mass or more and an inorganic substance, wherein the melting point of the resin is in a range of 100 to 165° C.

Abstract: A housing for a gas-tight rechargeable battery includes a proportional valve that is arranged at an opening in a housing wall. The proportional valve has a valve body that is influenced by force in the direction of its closed position and towards the interior of the housing. The proportional valve is embodied at least partially from metal such that it allows the through-flow of gas if the pressure that is prevailing in the housing exceeds a construction-dependent pressure limit value. The proportional valve is configured to be connected electrically to the cathode of the rechargeable battery. A contact element embodied at least partially from metal is configured to be connected electrically to the anode of the rechargeable battery and is arranged on the outside of the housing such that the valve body comes into physical contact with the contact element after the proportional valve has achieved a defined open position.

Abstract: An energy storage device includes an electrode unit in which a cathode having a cathode lead, an anode having an anode lead, and a separator located between the cathode and the anode to separate the cathode and the anode from each other are rolled together; a housing receiving the electrode unit; an electrolyte filled in the housing; an inner terminal arranged in the housing to face the electrode unit; and an outer terminal connected to the inner terminal. A groove is formed in a side of the inner terminal, and a side protrusion is formed on an inner wall of the housing at a location corresponding to the groove.

Abstract: The present invention relates to a storage-battery vent cap which adjusts an internal pressure of a storage battery by exhausting a gas generated inside the storage battery to the outside and blocking inflow of external air. The vent cap includes a cylindrical body installed in a vent hole of the battery and formed with an exhaust hole; a cylindrical insert coupled to the body, a partition being formed inside the insert and a coupling hole and a air vent being formed in the partition; and a valve fixed to the coupling hole and elastically deformed by an internal pressure of the battery to open the air vent. The valve has an umbrella-like shape including a valve body having a larger diameter than that of the coupling hole, a cover formed on an outer circumferential surface of the valve body, and a fixing portion downwardly protruded from the valve body.

Abstract: A safety vent including: a vent 3 that allows gas generated inside a laminate type battery 2 to release to the outside, a gas permeated membrane 4 through which the gas permeates, and a housing case 5 that internally houses the vent 3 and the gas permeated membrane 4, and that is attached to a gas spout out port 24 formed in a laminated exterior casing 21 of the laminate type battery 2.

Abstract: An energy storage device package is provided. The energy storage device package includes a bottom cover and a top cover connected to form a hollow chamber to accumulate an electrolyte, a first electrode and a second electrode formed on the top cover and which stretch from the top cover to the hollow chamber to contact the electrolyte, and a safety valve. The first electrode includes an opening and an exhaust channel that extends between the hollow chamber and the opening. When a gas pressure in the hollow chamber is smaller than or equal to a threshold value, the safety valve in the first electrode blocks the exhaust channel. When the gas pressure is larger than the threshold value, the gas pushes to open the safety valve and flows out from the hollow chamber through the exhaust channel and the opening.

Abstract: A fluidic control system includes featured layers. The featured layers include two or more features which collectively form at least one functional component.

Abstract: This invention relates to a capacitive battery including a battery shell formed with an opening at an end thereof, an electrolyte medium accommodated in the battery shell, a cover disposed at the opening of the battery shell for sealing the battery shell. The cover further has an elastically deformable decompression valve plate to reduce pressure impact generated by expansion of an inner of the battery shell. A lateral surface of the decompression valve plate contacts with the electrolyte medium and the other lateral surface of the decompression valve plate communicate outside. Besides, the decompression valve plate has an even thickness. The thickness of the decompression valve plate is within 0.1 mm to 2 mm. The thickness of the cover is no less than 4 mm. The cover of the capacitive battery has advantage of having good explosion-proof and leakproof function so as to improve safe use of the battery.

Abstract: A thermal management system is provided that minimizes the effects of thermal runaway. The system includes a sealed battery pack enclosure configured to hold a plurality of batteries and at least one exhaust nozzle assembly. The exhaust nozzle assembly includes an exhaust nozzle that passes and directs the flow of hot gas from within the battery pack to the ambient environment during a thermal runaway event, a nozzle seal mounted within the exhaust nozzle that seals the exhaust nozzle during normal operation of the battery pack, and a shape memory alloy (SMA) retaining member that is configured to capture an end portion of the nozzle seal and hold the seal within the exhaust nozzle when the SMA retaining member is configured in its first shape, and that is configured to release the seal from the exhaust nozzle when the SMA retaining member is heated to its transformation temperature.

Abstract: A secondary battery includes an electrode assembly including a first electrode, a second electrode, and a separator between the first electrode and the second electrode, a case accommodating the electrode assembly, a cap assembly including a cap plate having a first through-hole and coupled to the case and a short-circuiting member electrically coupled to one of the first and second electrodes, and a displacement plate in the first through-hole and spaced from a bottom surface of the short-circuiting member at a first position, and configured to be separated from the first through-hole and to contact the bottom surface of the short-circuiting member at a second position.

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: A sealed battery with a cleavage groove is provided. A cleavage groove (41) is provided on a flat section (13) of the battery case (2) to form a cleavage line intersecting a ridge line (L) formed on the flat section of the battery case when the battery case swells up due to an increase in internal pressure. The cleavage line is, as viewed in a side view, a curved line made up of a first curved segment (42) curved to protrude in one direction and a second curved segment (43) curved to protrude in a direction forming an angle of 90 degrees or larger with the direction in which the first curved segment protrudes, the first and second curved segments being connected with each other. At least one of the first curved segment and the second curved segment intersects the ridge line.

Abstract: An energy storage device includes an electrode unit in which a cathode having a cathode lead, an anode having an anode lead, and a separator located between the cathode and the anode to separate the cathode and the anode from each other are rolled together; a housing receiving the electrode unit; an electrolyte filled in the housing; an inner terminal arranged in the housing to face the electrode unit; and an outer terminal connected to the inner terminal. A groove is formed in a side of the inner terminal, and a side protrusion is formed on an inner wall of the housing at a location corresponding to the groove.

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: An electrochemical cell is provided including, but not limited to, a can having a side wall that is coupled to a first end and having a cover at a second end of the can to close the second end of the can, a cell element within the can, electrolyte within the can, and a safety device. The can forms a vent at the first end configured to allow gases and/or effluent to exit the can once the pressure inside the can reaches a predetermined amount. The safety device is provided adjacent a first end of the cell element and between the cell element and the first end of the housing. The safety device is configured to exert an additional force on the vent to aid in the deployment of the vent.

Abstract: Disclosed herein is a cap assembly loaded on an open upper end of a cylindrical container of a battery in which an electrode assembly is mounted in the cylindrical container, the cap assembly including a safety vent having a predetermined notch configured to rupture by high-pressure gas generated in the battery, a current interruptive device coupled to a bottom of the safety vent by welding for interrupting current when internal pressure of the battery increases, and a current interruptive device gasket for surrounding an outer circumference of the current interruptive device, wherein the current interruptive device includes two or more through holes for gas discharge, the through holes being formed such that the sum of areas of the through holes is equal to 20% to 50% of an entire area of the current interruptive device. When high-pressure gas is generated in the battery, the cap assembly effectively interrupts current and rapidly discharges the gas, thereby greatly improving safety of the battery.

Abstract: An energy storage device package is provided. The energy storage device package includes a bottom cover and a top cover connected to form a hollow chamber to accumulate an electrolyte, a first electrode and a second electrode formed on the top cover and which stretch from the top cover to the hollow chamber to contact the electrolyte, and a safety valve. The first electrode includes an opening and an exhaust channel that extends between the hollow chamber and the opening. When a gas pressure in the hollow chamber is smaller than or equal to a threshold value, the safety valve in the first electrode blocks the exhaust channel. When the gas pressure is larger than the threshold value, the gas pushes to open the safety valve and flows out from the hollow chamber through the exhaust channel and the opening.

Abstract: A battery packet (50) comprises a battery case (51) formed by processing a battery case forming laminated sheet (10), a battery 50a contained in the battery case (51), and tabs (59, 60) extending outside from the battery case (51). The battery case forming laminated sheet (10) is formed by laminating a first base film layer (1a), i.e., an outermost layer, a metal foil layer (2), and a heat-adhesive resin layer (3) in that order. The first base film layer (1a) is a biaxially oriented polyethylene terephthalate resin film or a biaxially oriented nylon resin film. The metal foil layer (2) is an aluminum or copper foil. The heat-adhesive resin layer (3) is formed of a polyolefin resin, more preferably, of an acid-denatured polyolefin resin.

Abstract: There is provided an exhausting device and an energy storage device, including: a housing; a lower valve; an upper valve; a cover; and an elastic member provided between a lower surface of the cover and an upper surface of the opening/closing member to provide a downward pressure to the opening/closing member, and it can appropriately release an increase in an inside pressure due to gas generated inside an energy storage device by the exhausting device, thereby improving reliability of the energy storage device, extending lifespan of the energy storage device, and allowing semi-permanent use of the energy storage device.

Abstract: A rubber valve for sealing a battery sealing structure is provided, comprising: a first projection in a dome shape with a center protruding upward; a second projection in a hemispherical shape with at least one diametric groove formed thereon; and a column connecting the first and the second projections. A lithium ion battery having the rubber valve is also provided.

Abstract: A secondary battery comprises a power generating element, a battery case including a gas release hole, and a valve safety device configured to close the gas release hole and release gas out of the battery case when inner pressure in the battery case exceeds a predetermined value. The safety valve device comprises a valve member and a holding member. The valve member includes a sealing portion hermetically making contact with a sealed surface around the gas release hole, and the holding member is fixed to the battery case to elastically press the sealing portion by its elastic deformation.

Abstract: A lithium ion secondary battery has a shape memory safety vent adapted to discharge internal compressed gas by temporarily being opened when the temperature reaches a predetermined level to avoid a swelling phenomenon of the battery and improve safety. The lithium ion secondary battery includes an electrode assembly having first and second electrode plates wound a number of times with a separator interposed between them; a can having an opening formed on a side thereof to contain the electrode assembly; and a cap plate adapted to cover the can and provided with a vent hole on a side thereof, to which a safety vent adapted to deform at a predetermined temperature and discharge gas from inside the can to the exterior is coupled.

Abstract: A stainless steel material for a fuel cell, used for a fuel cell or a cartridge for the fuel cell, having a magnetic permeability of 1.000 to 2.500, and forming a layer having a value of chromium atomic %/iron atomic % of not less than 3.0 in the most surface thereof, and/or the layer of thickness of not less than 12 nm calculated as SiO2 having an oxygen atomic % of not less than 20%. Even when brought into contact with the content solution exhibiting acidity of the fuel cell, the stainless steel material reliably suppresses the elution of metal ions thereof.

Abstract: A degassing system for an accumulator includes a corso with a degassing opening, a pin that is arranged in the corso, at least one flap that is mounted such that it can rotate around the pin, a spring that is arranged to exert a torque on the at least one flap, and a seal that is arranged such that the at least one flap rests on the seal in a rest position and closes the degassing opening.

Abstract: A safety mechanism for a laminate battery. An exterior case (5) consists of two molded sheets (5a) made of laminate sheets, superposed upon one another, and bonded together around the outer edges. The exterior case has a protrusion (10) that communicates with the interior of the exterior case and protrudes outwardly from one side. A safety vent (13) is made up of an exhaust hole (11) formed in at lease one of the two molded sheets (5a) in the protrusion (10), and a valve element (12) making elastic pressure contact with the edge of the exhaust hole (11) to seal it. The safety mechanism does not operate within the range of internal pressure variation during normal use, but operates reliably at a time point when a predetermined valve operating pressure is reached to release a necessary amount of gas to the outside, this valve operating pressure being within the safe range relative to the pressure resistance of the exterior case (5) made of laminate sheets.

Abstract: A power storage unit has: a plurality of power storage modules each constituted of a power generation element which in a power generation element case containing the power generation element; and a power storage unit case containing the power storage modules and an insulative liquid, wherein at least two of the power storage modules have a first valve that switches from a closed state to an open state in response to the pressure in the power generation element case increasing up to a first threshold and a second valve that switches from a closed state to an open state in response to the pressure at the outside of the power generation element case increasing up to a second threshold.

Abstract: An explosion-proof device for a battery comprises: a vent formed in a battery shell of the battery; a valve core movably disposed in the vent to seal and open the vent; a support mounted on an outer wall of the battery shell; and an elastic element. One end of the elastic element is connected to the support and another end of the elastic element is connected to the valve core so as to normally push the valve core to seal the vent. Each of a power battery and a power battery module includes the explosion-proof device.

Abstract: A gas release valve to be mounted in an access port of a battery cell includes a housing, the upper side of which is closed by a lid. The lower side of the lid has an opening leading into the battery cell and is in communication, via degassing passageways closed by an elastic sealing element, with at least one vent provided in the lid. The elastic sealing element is a preloaded non-return element, the inner surface of which is urged into sealing contact with a seat provided in the housing by it s own elasticity and, in addition, by a pressure differential with the outer pressure that acts through the vent against the outer surface of the sealing element.

Abstract: A degassing system for an accumulator includes a corso with a degassing opening, a pin that is arranged in the corso, at least one flap that is mounted such that it can rotate around the pin, a spring that is arranged to exert a torque on the at least one flap, and a seal that is arranged such that the at least one flap rests on the seal in a rest position and closes the degassing opening.

Abstract: Water-tight battery powered appliances, for example personal care appliances such as razors and toothbrushes, are provided. The appliances include a housing having a seal that allows gases, e.g., hydrogen, to vent from the appliance without allowing water to enter.

Abstract: A nickel-metal hydride storage battery is provided capable of suppressing an increase of discharge reserve of a negative electrode and preventing lowering of battery characteristics. A nickel-metal hydride storage battery 100 of the present invention comprises a battery main part (an electrode plate group 150, an electrolyte, and others), a case 102 housing this battery main part, and a safety valve device 101 having an excessive pressure preventing function for preventing excessive rise of the internal pressure in the case 102 by discharging gas from the case 102 when the internal pressure in the case 102 exceeds a predetermined value.

Abstract: An end assembly seals a cylindrical electrochemical cell. The assembly includes a positive temperature coefficient (PTC) device and a gasket having a protrusion that cooperates with the end assembly isolates the PTC device from primary axial compression forces present in the closure assembly. In further embodiments of the present invention, the end assembly may be produced by insert molding a seal element about the terminal cover and the gasket itself has an E or F shaped cross section.

Abstract: The invention is a battery containing at least one electrochemical cell having a sealing plate with a pressure relief vent, the sealing plate being part of an electrical circuit between one of the electrodes and the corresponding terminal under normal conditions but capable of changing shape to break the circuit without the cell venting when the temperature of the sealing plate rises to a predetermined level and then returning to its original shape to reestablish the broken circuit when the sealing plate temperature returns to a normal level.

Abstract: A nickel-metal hydride storage battery is provided capable of suppressing changes in discharge reserve and charge reserve of a negative electrode to prevent lowering of battery characteristics for a long term. A nickel-metal hydride storage battery 100 of the present invention comprises a battery main part (an electrode plate group 150, an electrolyte, and others), a case 102 housing this battery main part, and a safety valve device 101. The safety valve device 101 includes a valve member 110 of a closed-end substantially cylindrical shape. This nickel-metal hydride storage battery 100 is arranged such that a hydrogen leak rate V1(?l/h/Ah) of the battery having been charged and discharged and then charged to 60% SOC satisfies a relationship: 2?V1?4, the hydrogen leak rate being per unit of battery capacity under an atmosphere at a battery temperature of 45° C., and a reduced pressure of 10 kPa.

Abstract: Lithium rechargeable batteries having functional center pins are provided. A lithium rechargeable battery has a center pin having a compressed compression spring positioned within a thermal cut-off composition to reduce the void volume inside a bare cell during initial overcharge. The thermal cut-off composition melts at a temperature within a specific temperature range, e.g. between about 80° C. and about 250° C. This prevents the battery from exploding and igniting. Thus, the inventive lithium rechargeable batteries have improved thermal stability.

Abstract: A battery pack includes a battery having a risk of releasing a gas under abnormal conditions, a case that accommodates the battery, and an oxygen reducing portion that reduces an amount of oxygen within the case.

Abstract: A safety device of a battery including a pressure releasing unit provided at a cell and the battery, in which the pressure releasing unit is configured to release an internal pressure within the cell when the internal pressure of the cell exceeds a predetermined set pressure. Also included is a space member covering the pressure releasing unit and configured to form an empty space around the pressure releasing unit such that when the internal pressure of the cell exceeds the predetermined set pressure, the released internal pressure is released into the empty space formed by the space member.

Abstract: An exemplary battery connecting structure includes a housing and a contact spring. The housing includes a base, a sidewall extending around a periphery of the base, and at least one fixing portion defined at an inner surface of the sidewall away from the base. The contact spring includes a plurality of loops. A loop of an end of the contact spring is fixed between the base and the fixing portion, such that the end of the contact spring is electrically fixed to the base of the housing. In the present battery connecting structure, the contact spring is not easily detached from the housing. A battery-powered device using the battery connecting structure is also provided.

Abstract: Lithium rechargeable batteries having functional center pins are provided. A lithium rechargeable battery has a center pin whose top and bottom ends are blocked by a thermal cut-off composition to reduce the void volume inside a bare cell during initial overcharge. The thermal cut-off composition melts at a temperature within a specific temperature range, e.g. between about 80 and about 250° C. This prevents the battery from exploding and igniting. Thus, the inventive lithium rechargeable batteries have improved thermal stability.

Abstract: Water-tight battery powered appliances, for example personal care appliances such as razors and toothbrushes, are provided. The appliances include a housing having a seal that allows gases, e.g., hydrogen, to vent from the appliance without allowing water to enter.

Abstract: A secondary battery comprises a power generating element, a battery case including a gas release hole, and a valve safety device configured to close the gas release hole and release gas out of the battery case when inner pressure in the battery case exceeds a predetermined value. The safety valve device comprises a valve member and a holding member. The valve member includes a sealing portion hermetically making contact with a sealed surface around the gas release hole, and the holding member is fixed to the battery case to elastically press the sealing portion by its elastic deformation.

Abstract: Water-tight battery powered appliances, for example personal care appliances such as razors and toothbrushes, are provided. The appliances include a housing having a seal that allows gases, e.g., hydrogen, to vent from the appliance without allowing water to enter.

Abstract: A sealed alkaline storage battery including a nickel electrode as a positive electrode, characterized by having the function of being capable of charge when the gas pressure in the battery and/or the battery temperature is not higher than a specified value and of being incapable of charge when the gas pressure in the battery and/or the battery temperature exceeds the specified value.

Abstract: An electrochemical cell with a vent assembly that reliably prevents resealing of a vented seal member is provided. The vent assembly seals the end of a container that includes a first electrode, a second electrode, a separator located between the first and second electrodes and an electrolyte in contact with the electrodes and separator. The seal member includes a diaphragm with a hinge along one edge and a vent along another edge. The hinge and vent are located so that, relative to the longitudinal axis of the vent assembly, the hinge is closer to the vent than to the cell's terminal cover.

Abstract: A secondary battery includes an electrode assembly realized by layering and/or winding an anode, a cathode, and a separator; a case having a space into which the electrode assembly is inserted; and a cap assembly including a cap plate connected to the case inside of which the electrode assembly is mounted, a gasket insulating the cap plate from the case, and a safety assembly having a shock absorbing unit extending into the case from the gasket or the cap plate and that has a space for absorbing pressure, and having a vent member supported in a distal end of the shock absorbing unit and that is damaged when an internal pressure of the secondary battery exceeds a predetermined pressure.

Abstract: A liquid-inlet cap (13) is installed in a liquid inlet (11) provided in a battery casing, the liquid-inlet cap (13) having a ventilating hole (12) for expelling a gas from the inside of a battery to the outside of the battery. A control valve section (21) is installed inside a cylindrical body (20) of the liquid-inlet cap (13) separately from the cylindrical body (20) and responds to the internal pressure of the battery to form a ventilating passage from a vent hole (22) provided on one end to a ventilating opening (28) provided on the other end.

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.